A zoom lens includes a lens group having positive refractive power, a middle group having negative refractive power as a whole, a lens group having positive refractive power, a lens group having positive refractive power, a lens group having negative refractive power, and a rear group all of which are disposed in order from the object side to the image plane side, and has a specific optical characteristic expressed by a specific expression.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 15/16 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
2.
DIMMING DEVICE, LASER MACHINING DEVICE, AND LASER BEAM MEASUREMENT DEVICE
To achieve the object, provided is a dimming device including a beam splitter that has an optical thin film of 10 or more layers formed close to a surface on which the laser beam is incident, and that, when any orthogonal coordinate axes whose origin in a plane perpendicular to an optical axis of the laser beam irradiation optical unit is on the optical axis are defined as an X axis and a Y axis, is disposed so as to be inclined at an angle α of 30° or more and 60° or less with respect to the optical axis with the X axis as a rotation axis.
A zoom lens and an imaging device that achieve both high optical performance and compactness of the product. The zoom lens includes, in order from the object side, a first lens group having positive refractive power, a second lens group having negative refractive power, and a rear group having positive refractive power. The rear group includes, in order from the object side, an intermediate lens group M1 having positive refractive power, and an intermediate lens group M2 having positive refractive power, and has specific optical characteristics expressed by specific expressions.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 15/16 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
G02B 27/64 - Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
4.
META-LENS, METHOD FOR MANUFACTURING SAME, AND LIGHTING DEVICE
NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY (Japan)
Inventor
Li, Jie
Iwami, Kentaro
Ikezawa, Satoshi
Abstract
Provided is a meta-lens capable of converting a beam profile from a Gaussian distribution to a top hat distribution by a nanostructure in only one main surface of a substrate. A meta-lens (1) is configured such that a plurality of nano-sized pillars (3) are provided on one main surface of a light-transmitting substrate (2). The pillars (3) positioned further on an inner side than a distance r from the optical center are typically arranged such that a change in a cross-section thereof is represented by a function that satisfies three specific conditions.
In an image forming apparatus (1), an excitation light source (10) irradiates an object with excitation light for a first fluorescence substance and excitation light for a second fluorescence substance, a notch filter (20) transmits fluorescence in a wavelength range specific to each fluorescence substance among return light from the object, an imaging unit (30) separately captures images of the fluorescence in respective wavelength ranges, and an image processing unit (40) superimposes these images.
Provided is a configuration that is for removing unwanted light having separated from a light beam and that can be employed to sufficiently reduce noise in optical wireless communication. An optical absorber (32) as a constituent of an optical communication device (11) is provided with: a light absorption glass block for absorbing incident light; a first cavity where light having transmitted through the light absorption glass block undergoes multiple reflection; and a second cavity where light having reflected off the light absorption glass block undergoes multiple reflection.
To provide a single focal length lens which has excellent optical characteristics and is advantageous in terms of compactness and cost reduction. The imaging lens has seven to nine lenses including, in order from the object side, a first lens having negative refractive power, a second lens having negative refractive power, a third lens having positive refractive power, and a final lens arranged closest to the image surface side and having negative refractive power, and a diaphragm, and has specific optical characteristics expressed by specific expressions.
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
G02B 9/64 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having more than six components
8.
OPTICAL COMMUNICATION OPTICAL SYSTEM AND OPTICAL COMMUNICATION APPARATUS
An optical communication optical system includes four groups of a first group to a fourth group. The optical communication optical system satisfies a first relationship based on focal lengths of the first group and the second group, and a second relationship based on a rotation angle and an apex angle of two wedge prisms in which the third group rotates in opposite directions at the same angle in each of two wedge prism pairs.
There is provided a zoom lens configured to include an anterior group having negative refractive power as a whole and a posterior group having positive refractive power as a whole. In zooming from a wide-angle end to a telephoto end, five or less lens groups are moved to change intervals, and the zoom lens has specific optical characteristics represented by specific conditions.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 13/02 - Telephoto objectives, i.e. systems of the type + – in which the distance from the front vertex to the image plane is less than the equivalent focal length
A laser beam measurement device includes a plate-type first beam splitter, an observation device that reads an image of a spot formed by transmitted light or reflected light of a laser beam incident on the first beam splitter, and a calculation device that performs a numerical calculation on output data of the observation device to perform a correction, in which when certain coordinate axes orthogonal to each other on a plane perpendicular to an optical axis of a laser beam irradiation optical unit with origins of the orthogonal coordinate axes being located on the optical axis are defined as X and Y axes, the first beam splitter is disposed to be inclined at an angle α in a range of 30 degrees or more and 60 degrees or less with respect to the plane perpendicular to the optical axis with the X axis as a rotation axis.
A thermal emitter module includes: a thermal emitter; a housing that houses the thermal emitter; and a support member interposed between the thermal emitter and the housing and supporting the thermal emitter, in which a constituent material of the support member contains at least one of an oxide or a nitride.
H01K 1/18 - Mountings or supports for the incandescent body
H05B 3/08 - Heater elements structurally combined with coupling elements or with holders having electric connections specially adapted for high temperatures
A tooth of a subject is irradiated with light having a specific polarization direction, and each of two or more polarization components in Raman-scattered light from the tooth is separated by a polarization separation element and detected by a detector. Polarization anisotropy of the Raman-scattered light is obtained from a detection signal of each polarization component, and dental caries in the tooth is detected based on the polarization anisotropy.
A zoom lens includes, in order from an object side, a positive first lens group, a negative second lens group, a positive third lens group, a negative fourth lens group, and a negative fifth lens group, and magnifies by changing an interval on an optical axis between adjacent lens groups. The third lens group includes an object side portion group arranged on an object side with a widest air interval in the third lens group and an image side portion group arranged on an image side of the object side portion group, and the second lens group moves along the optical axis at a time of magnification change. The object side portion group and the image side portion group each include a positive lens, a positive lens, and a negative lens arranged in order from the object side. Further, an imaging device including the zoom lens is provided.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 9/64 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having more than six components
G02B 13/02 - Telephoto objectives, i.e. systems of the type + – in which the distance from the front vertex to the image plane is less than the equivalent focal length
A zoom lens has a plurality of lens groups and is a zoom lens that zooms from the wide-angle end to the telephoto end by changing the distance between adjacent lens groups, and has an aperture stop and at least one focus group each on the object side and the image side with the aperture stop therebetween, and when focused from infinity to a close object, the focus groups move along the optical axis, and the focus group arranged on the object side closer than the aperture stop includes at least one lens, and the lens satisfies the predetermined conditional expression. In addition, an imaging apparatus includes the zoom lens.
G02B 15/20 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having an additional movable lens or lens group for varying the objective focal length
A lens control device according to an aspect of the present invention controls a lens in order to image a subject and includes at least one processor configured to perform a calculation process of calculating a distance between the lens or a camera, to which the lens is attached, and the subject on a basis of a position of the lens or the camera and a position of the subject and a remote control process of remotely controlling the lens on a basis of the distance.
Provided is a light reduction mechanism which includes a plate-type first beam splitter and a plate-type second beam splitter, in which in a case where the X axis and the Y axis are arbitrary orthogonal coordinate axes in the plane perpendicular to the optical axis of laser beam irradiation optical unit whose origin is in the optical axis, the first beam splitter is arranged with the X axis as a rotation axis and inclined at an angle α in the range from 30° to 60° inclusive with respect to the plane perpendicular to the optical axis, and the second beam splitter is arranged with the X′ axis, which is parallel to the X axis and passes through the optical axis, as a rotation axis, and inclined at an angle −α with respect to the plane perpendicular to the optical axis.
09 - Scientific and electric apparatus and instruments
Goods & Services
Photographic machines and apparatus; cinematographic
machines and apparatus; optical machines and apparatus;
measuring or testing machines and instruments; optical
lenses; lenses for industrial use; photographic apparatus
and instruments; cameras; lenses for cameras; replacement
lenses for cameras; telecommunication machines and
apparatus; electronic data processing, telecommunications,
measuring, testing, inspecting machines, apparatus and their
parts; digital cameras; camera modules for digital cameras;
lenses for digital cameras; replacement lenses for digital
cameras; security cameras; lenses for security cameras;
replacement lenses for security cameras; security cameras
for indoor use; vehicle-mounted cameras; lenses for
vehicle-mounted cameras; surveillance cameras; surveillance
cameras for indoor use; lenses for closed circuit television
cameras; replacement lenses for closed circuit television
cameras; network cameras; lenses for network cameras;
replacement lenses for network cameras; digital video
cameras; camera modules for digital video cameras; lenses
for digital video cameras; mobile phones; camera modules for
mobile phones with cameras; lenses for camera modules for
mobile phones with cameras; smartphones; infrared cameras;
lenses for infrared cameras; replacement lenses for infrared
cameras; infrared human-detecting security alarm apparatus;
apparatus and instruments for measuring the temperature of
an object; webcams; lenses for video conferencing equipment;
glasses.
A signal light transmission member includes an AR coated lens, a light transmission part, and an optical fiber. The refractive index of the light transmission part has a specific relationship with the refractive index of a core material of the optical fiber. An anti-reflective coating is formed at an interface portion between the lens of the AR coated lens and the light transmission part.
G02B 6/32 - Optical coupling means having lens focusing means
G02B 1/118 - Anti-reflection coatings having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
A meta-surface optical element includes a substrate and pillars made of a-Si:H and arranged on a surface of the substrate. The pillars on the surface of the substrate are away from each other at a distance in a range of 300 to 450 nm between the centers thereof, the pillars have heights in a range of 300 to 580 nm, and the pillars have diameters in a range of 100 to 250 nm.
Provided are a zooming lens and an imaging device that are small and light-weight, and have high optical performance. The zooming lens (30) comprises, in order from the object side, a negative front group and a positive rear group. The front group includes, in order from the object side, a positive lens group G1 (G1) and a negative composite lens group Gn (G2). The rear group includes a positive composite lens group Gp (G3), a negative lens group Gf (G4), and a negative lens group Gr (G5). The zooming lens (30) have specific optical characteristics expressed by two specific expressions.
G02B 15/20 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having an additional movable lens or lens group for varying the objective focal length
G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
09 - Scientific and electric apparatus and instruments
Goods & Services
Cinematographic machines and apparatus; Optical machines and apparatus, namely, binoculars, telescopes, microscopes; Optical lenses; Optical lenses for industrial use; Cameras; Lenses for cameras; Replacement lenses for cameras; Digital cameras; Camera modules for digital cameras; Lenses for digital cameras; Replacement lenses for digital cameras; Security cameras; Lenses for security cameras; Replacement lenses for security cameras; Security cameras for indoor use; Cameras, namely, cameras for vehicles; Cameras for vehicles, namely, back-up sensors cameras and dash cameras; Cameras, namely, cameras for surround view; Rearview cameras for vehicles; Lenses for vehicle-mounted cameras; Surveillance cameras; Surveillance cameras for indoor use; Lenses for closed circuit television cameras; Replacement lenses for closed circuit television cameras; Network cameras; Lenses for network cameras; Replacement lenses for network cameras; Digital video cameras; Camera modules for digital video cameras; Lenses for digital video cameras; Camera modules for use with mobile phones with cameras; Lenses for camera modules for use with mobile phones with cameras; Infrared cameras; Lenses for infrared cameras; Replacement lenses for infrared cameras; Webcams; Lenses for video conferencing equipment
22.
Lens system and program for controlling a touch display
A lens system includes a lens optical system, a touch display, and at least one processor configured to control a part of a virtual screen to be displayed on the touch display in response to a user's scroll operation on the touch display, and controls the lens optical system such that a state of the lens optical system works with a part of the virtual screen to be displayed on the touch display.
H04N 23/63 - Control of cameras or camera modules by using electronic viewfinders
G02B 7/10 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
G06F 3/04847 - Interaction techniques to control parameter settings, e.g. interaction with sliders or dials
G06F 3/0488 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
G06F 3/04883 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
H04N 1/00 - Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmissionDetails thereof
H04N 23/62 - Control of parameters via user interfaces
H04N 23/67 - Focus control based on electronic image sensor signals
H04N 23/69 - Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
A zoom lens includes: a first lens group having negative refractive power and a subsequent group in order from an object side to an image side. The subsequent group includes, in order from an object side to an image side, a Gp1 group including one or more lens groups and having positive refractive power as a whole, a Gn1 group including one or more lens groups and having negative refractive power as a whole, a Gp2 group including one or more lens groups and having positive refractive power as a whole, and a Gn2 group including one or more lens groups and having negative refractive power as a whole. An aperture diaphragm is disposed closer to an object side than the Gp2 group, an interval between adjacent lens groups changes at least during one of zooming and focusing, and a predetermined expression is satisfied.
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 15/15 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective compensation by means of only one movement or by means of only linearly related movements, e.g. optical compensation
H04N 23/55 - Optical parts specially adapted for electronic image sensorsMounting thereof
An imaging lens includes, in order from an object side to an image side, a first lens including a negative meniscus lens having a convex shape facing the object, a second lens including a positive meniscus lens having a convex shape facing the image, at least one lens including a third lens, a fourth lens, a fifth lens, and a sixth lens including a positive lens having a convex image side surface, and Expression (1) is satisfied as follows. Further, an imaging apparatus including the imaging lens is provided.
An imaging lens includes, in order from an object side to an image side, a first lens including a negative meniscus lens having a convex shape facing the object, a second lens including a positive meniscus lens having a convex shape facing the image, at least one lens including a third lens, a fourth lens, a fifth lens, and a sixth lens including a positive lens having a convex image side surface, and Expression (1) is satisfied as follows. Further, an imaging apparatus including the imaging lens is provided.
1.2
G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
A gas detection device includes a gas detection system configured to image while irradiating, in a dot array shape, infrared light having an absorption wavelength of a gas from a light source, and generates, with a CPU, information on an emphasis image of an image of the gas from image information when irradiating and image information when not irradiating, and a display unit.
An image forming apparatus includes a light source that irradiates an observation target with excitation light; an imaging part that separately receives short wavelength-side NIR light and SWIR light from the observation target; and an image processing unit that generates a composite image having both a density of a short wavelength-side NIR light image and a definition of an SWIR light image.
A61B 1/04 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor combined with photographic or television appliances
A61B 1/06 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor with illuminating arrangements
G06T 5/50 - Image enhancement or restoration using two or more images, e.g. averaging or subtraction
27.
ADJUSTMENT DEVICE AND OPTICAL COMMUNICATION DEVICE
An optical communication device includes an adjustment device and a light receiving unit. The adjustment device includes a wedge prism, an actuator, a detection unit, and a control unit, and the control unit controls the actuator to reduce a difference between a result of detection by the detection unit and a reference.
Adopted is a laser beam irradiation optical unit for forming a spot on an object to be machined and irradiating the object to be machined with a laser beam emitted from a laser oscillator to perform laser machining including an energy intensity distribution adjustment mechanism that adjusts an energy intensity distribution of the laser beam at the spot in an irradiation trajectory of the laser beam from the laser oscillator to the object to be machined, in which the energy intensity distribution adjustment mechanism adjusts the energy intensity distribution of the laser beam at the spot so as to be non-uniform.
A lens system includes: a lens; an operation terminal separated from the lens, the operation terminal including a touch panel; and a controller that controls the lens in accordance with a gesture command input to the touch panel.
H04N 23/62 - Control of parameters via user interfaces
G06F 3/0488 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
H04M 1/724 - User interfaces specially adapted for cordless or mobile telephones
H04N 23/63 - Control of cameras or camera modules by using electronic viewfinders
H04N 23/67 - Focus control based on electronic image sensor signals
H04N 23/69 - Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
A caries detection device includes: a screening optical system that irradiates a tooth with a near-infrared ray from a light source to detect transmitted light through the tooth; and a Raman scattered light detection optical system that irradiates a caries candidate area of the tooth detected from information of the transmitted light with a near-infrared ray from the light source to detect Raman scattered light generated from the caries candidate area.
The optical system includes a plurality of lens groups in which an interval between adjacent lens groups changes when focusing, and an aperture stop, and when intervals between an exit pupil of an on-axis ray by the aperture stop and an image plane in an infinite-distance object focusing state, a first short-distance object focusing state in which an imaging magnification is β1, and a second short-distance object focusing state in which an imaging magnification is β2 are Pinf, P1, and P2, respectively, the optical system satisfies predetermined conditions. An imaging apparatus includes the optical system and an image sensor.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 15/20 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having an additional movable lens or lens group for varying the objective focal length
A situation grasping means configured to grasp a situation of a moving body, an optical system mounted on the moving body, and a focusing group configured to change an imaging position of the optical system are provided, and the imaging position is changed to a position calculated from a setting value for setting the imaging position according to a situation of the moving body and a situation of the moving body grasped by the situation grasping means, and the optical system satisfies a predetermined conditional expression. Furthermore, the moving body includes the imaging apparatus.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
H04N 23/959 - Computational photography systems, e.g. light-field imaging systems for extended depth of field imaging by adjusting depth of field during image capture, e.g. maximising or setting range based on scene characteristics
33.
THERMAL RADIATION ELEMENT, THERMAL RADIATION ELEMENT MODULE, AND THERMAL RADIATION LIGHT SOURCE
A thermal radiation element includes a substrate, made of a semiconductor, having a first principal plane and a second principal plane, a first conductor layer and a second conductor layer provided on the first principal plane and the second principal plane, respectively, and an electrode pair provided in an outer edge region of the first conductor layer.
H05B 3/28 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
F27B 17/00 - Furnaces of a kind not covered by any of groups
B32B 9/04 - Layered products essentially comprising a particular substance not covered by groups comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance
34.
INSPECTION APPARATUS AND INFORMATION PROCESSING SYSTEM
An inspection apparatus includes a first optical system configured to irradiate a measurement object with ultraviolet light, a second optical system configured to detect, with a detector, at least one of the specific polarizations and fluorescence of 200 to 400 nm emitted from the measurement object, and a calculation unit that acquires information on an aromatic amino acid and a residue thereof in the irradiated portion according to a detection value of light detected by the detector.
Provided are: a zoom lens including, in order from an object side, a first lens group having positive refractive power, a second lens group having negative refractive power, an Intermediate group having one or more lens groups and having positive refractive power as a whole, a lens group having negative refractive power, and a rear group having one or more lens groups, wherein the intermediate group includes at least two lens surfaces each of which is a cemented surface and is a diverging surface, a space between adjacent lens groups changes in zooming, the lens group moves on an optical axis in focusing, and the zoom lens satisfies the predetermined conditional expression; and an imaging apparatus including the zoom lens.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 13/02 - Telephoto objectives, i.e. systems of the type + – in which the distance from the front vertex to the image plane is less than the equivalent focal length
Provided are: a zoom lens including, in order from an object side, a positive first lens group, a negative second lens group, an intermediate group as a whole, a negative lens group, and a rear group, wherein the intermediate group includes, in order from an object side, a first positive lens subgroup including one or two positive lenses, a first negative lens subgroup including only one cemented lens, a second negative lens subgroup including a negative lens with a concave surface facing an object, and a second positive lens subgroup including one or two positive lenses, the cemented lens constituting the first negative lens subgroup has at least one cemented surface with a convex surface facing an object, and a lens, closest to an image, of the second positive lens subgroup is a positive lens; and an imaging apparatus including the zoom lens.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 15/16 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
The purpose of the present invention is to provide a lens unit with which it is possible to reduce air leakage inside a lens barrel and the intrusion of outside air into the lens barrel, even when the lens unit is exposed for a long period of time to a high-temperature environment, or when the lens unit is exposed to repeated temperature changes in areas with a wide range of temperatures. In order to achieve this purpose, this lens unit comprises a plurality of optical elements arranged side-by-side along an optical axis, and a lens barrel holding the plurality of optical elements. The lens unit is characterized in that the lens barrel includes a reduced diameter part for placing at least one optical element. A sealing material having a thermoplastic elastomer as a main component is interposed between the reduced diameter part and a non-optically effective portion on one among the object side and the image-forming side of the at least one optical element, and the position of the at least one optical element in the optical axis direction is fixed by a biasing force toward another non-optically effective portion different than the one non-optically effective portion.
A fundus imaging apparatus includes an illumination apparatus including a light source and an illumination optical system, and an imaging apparatus including an image sensor and an imaging optical system. The illumination optical system irradiates a fundus with light from the light source. The imaging optical system forms an image of the fundus on the image sensor. An optical axis of the illumination optical system does not match an optical axis of the imaging optical system, or the illumination optical system does not have a specific optical axis.
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/14 - Arrangements specially adapted for eye photography
39.
Thermal radiation element, thermal radiation element module, and thermal radiation light source
A thermal radiation element includes a substrate; and a plasmonic perfect absorber in which a first conductor layer covering one main surface of the substrate, an insulator layer, and a second conductor layer are laminated in this order, in which the first conductor layer is provided with electrodes through which a current flows in an in-plane direction of a main surface of the first conductor layer.
H05B 3/26 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
40.
Photoacoustic element, photoacoustic imaging device, and photoacoustic element manufacturing method
A photoacoustic element which has excellent optical properties and acoustic properties is achieved. The photoacoustic element (1) includes: a metal layer (10); a first member (11) which is bonded to one primary surface of the metal layer (10); and a second member (12) which is bonded to another primary surface of the metal layer (10). The metal layer (10) reflects optical waves and transmits photoacoustic waves stemming from optical waves. Materials of the metal layer (10), the first member (11), and the second member (12) are selected so as to match an acoustic impedance of the metal layer (10) and an acoustic impedance of each of the first member (11) and the second member (12).
A zoom lens includes: a first lens group having negative refractive power on a most object side; and a positive lens group Pa having positive refractive power, a negative lens group N having negative refractive power, and a positive lens group Pb having positive refractive power that are arranged in this order from the object side and provided on an image side with respect to the first lens group.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 3/04 - Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere
G02B 13/00 - Optical objectives specially designed for the purposes specified below
42.
Plasmonic structure, light source, and wavelength selective absorber
In a plasmonic structure, a first conductor layer, a dielectric layer, and a second conductor layer are stacked in this order. The second conductor layer includes a plurality of conductor patterns that is two-dimensionally and periodically arranged, each of the plurality of conductor patterns having a circular shape or a regular polygonal shape. A diameter D of a circle circumscribed on each of the plurality of conductor patterns satisfies 200 nm≤D≤800 nm. A thickness g of the dielectric layer and the diameter D satisfy 0.3≤g/D≤0.6.
G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
Provided are a zoom lens comprising, in order from an object side, a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having negative refractive power, and a fifth lens group having positive refractive power, in which distances between the respective lens groups are changed to change magnification, the first lens group consists of one single lens having spherical surfaces on both sides, the single lens is a positive meniscus lens having a convex shape toward the object side, at a time of magnification change from a wide-angle end to a telephoto end, the second lens group moves along a path convex toward the image side, and a predetermined conditional expression is satisfied, and an imaging apparatus including the zoom lens.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 15/22 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with movable lens means specially adapted for focusing at close distances
44.
Cemented lens, optical system including the same, optical device, and method of manufacturing cemented lens
In a cemented lens according to one aspect of the present invention, a first optical element provided with a first light shielding film and a second optical element provided with a second light shielding film are cemented by an adhesive layer, and the adhesive layer is exposed from between the first light shielding film and the second light shielding film.
There is provided: an optical system including a focus lens group having positive refractive power and configured to move along an optical axis when focusing from an infinite-distance object to a short-distance object, and satisfying predetermined conditional expressions; and an imaging device including the optical system. The focus lens group includes a lens subgroup A, an aperture stop, and a lens subgroup B in order from the object side. The lens subgroup A includes a negative lens, a positive lens, and a positive lens in order from the image side. The lens subgroup B includes a negative lens and a positive lens in order from the object side.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
G02B 7/04 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
There is provided: an optical system including a focus lens group having positive refractive power and configured to move along an optical axis when focusing from an infinite-distance object to a short-distance object, and satisfying predetermined conditional expressions; and an imaging device including the optical system. The focus lens group includes a lens subgroup A, an aperture stop, and a lens subgroup B in order from the object side. The lens subgroup A includes a negative lens, a positive lens, and a positive lens in order from the image side. The lens subgroup B includes a negative lens and a positive lens in order from the object side.
G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
G02B 7/04 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
47.
CONDENSING OBJECTIVE OPTICAL SYSTEM AND PHOTOACOUSTIC DEVICE
A condensing objective optical system includes a first lens group having negative refractive power, a second lens group being a focus group having positive refractive power, and a photoacoustic element disposed closest to an object in this order. The photoacoustic element reflects an optical wave from the second lens group toward an object to transmit a photoacoustic wave from the object side. The condensing objective optical system satisfies a specific conditional expression that defines the conditions of the included lens and the condition regarding focusing.
G02B 26/08 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
G02B 9/10 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only one + and one – component
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
There are provided an optical system and an imaging device including the same. The optical system includes: in order from an object side to an image side, a first lens group having refractive power; and a second lens group having positive refractive power. A variable distance that varies during focusing between the first lens group and the second lens group is closer to an object than a variable distance that varies during focusing between other lenses. The first lens group includes a positive lens and at least one or more negative lenses in order from the image side. The second lens group includes a lens subgroup 2A having positive refractive power, an aperture stop, and a lens subgroup 2B having positive refractive power in order from the object side. The lens subgroup 2B includes a negative lens and a positive lens in order from the object side and satisfies a predetermined Conditional Expression.
G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
G02B 7/04 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
G02B 15/24 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with movable lens means specially adapted for focusing at close distances having a front fixed lens or lens group and two movable lenses or lens groups in front of a fixed lens or lens group
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
49.
Optical system and imaging device including two lens groups of -+ refractive powers
There are provided an optical system and an imaging device including the same. The optical system includes: in order from an object side to an image side, a first lens group having refractive power; and a second lens group having positive refractive power. A variable distance that varies during focusing between the first lens group and the second lens group is closer to an object than a variable distance that varies during focusing between other lenses. The first lens group includes a positive lens and at least one or more negative lenses in order from the image side. The second lens group includes a lens subgroup 2A having positive refractive power, an aperture stop, and a lens subgroup 2B having positive refractive power in order from the object side. The lens subgroup 2B includes a negative lens and a positive lens in order from the object side and satisfies a predetermined Conditional Expression.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 9/64 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having more than six components
50.
Communication device, optical axis direction adjusting method, and communication system
A zoom lens includes a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a rear group having a positive refractive power as a whole in order from an object side. The zoom lens has specific optical characteristics indicated by two expressions.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 15/16 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
52.
Optical system, fundus examination apparatus, fundus imaging apparatus, and fundus examination system
An optical system for observing reflected light from a fundus includes: an irradiation unit for irradiating an eye with light exited from a light source; a light-acceptance unit for accepting reflected light reflected on a fundus of the eye; and a polarization control unit for making light irradiated to the eye z-polarization axisymmetric with respect to an optical axis and blocking the z-polarization of reflected light reflected on the eye and directed to the light-acceptance unit.
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 3/14 - Arrangements specially adapted for eye photography
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
G02B 27/28 - Optical systems or apparatus not provided for by any of the groups , for polarising
A zoom lens according to the present invention includes sequentially from an object side: a first lens group having negative refractive power, and a second lens group having positive refractive power, and performs a magnification change operation by changing a gap between the adjacent lens groups. The zoom lens has specific optical characteristics represented by four expressions relating to the second lens group.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 15/177 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
54.
Image-capturing system capable of reducing an amount of data related to image acquisition
To provide an image-capturing system capable of maintaining high analysis accuracy while reducing the amount of data related to image acquisition with a simple method. In order to achieve the object, the image-capturing system includes an image-capturing device configured to acquire image data of a subject, and an image-capturing control device configured to control image acquisition by the image-capturing device. The image-capturing control device includes a difference extraction means configured to extract difference data on the basis of any two image data items acquired by the image-capturing device, a change amount extraction means configured to extract change amount data on the basis of any two difference data items extracted by the difference extraction means, and a condition change means configured to change an image acquisition condition in the image-capturing device on the basis of the change amount data extracted by the change amount extraction means.
H04N 5/232 - Devices for controlling television cameras, e.g. remote control
G02B 9/64 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having more than six components
The purpose of the present invention is to provide an adapter for a rigid endoscope, the adapter being capable of easily and rapidly correcting the deviation and tilt of an optical axis in a rigid endoscope imaging system. In order to achieve this purpose, adopted is an adapter for a rigid endoscope, the adapter being disposed between a rigid endoscope and an imaging device having an imaging element for converting an optical image into an electrical signal, and provided with a converter part for enlarging the optical image formed by the rigid endoscope. The adapter is characterized by being provided with an adapter part capable of adjusting the position and/or angle of the optical axis of the rigid endoscope with respect to the imaging device.
G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A zoom lens includes, in order from an object side, a first lens group that is positive, a second lens group that is negative, a third lens group that is positive, and a fourth lens group that is positive. During zooming from a wide angle end to a telephoto end, at least the first lens group and the third lens group are fixed and an interval on an optical axis of an adjacent lens group relative thereto is changed. In the zoom lens, the fourth lens group includes at least one positive lens and satisfies a predetermined conditional expression. In addition, an imaging device includes the zoom lens and an image sensor.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 15/20 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having an additional movable lens or lens group for varying the objective focal length
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
This precursor resin composition is for obtaining a UV curable resin used for producing an optical element having anomalous partial dispersion characteristics. The precursor resin composition includes: a component A including a bifunctional fluorine-containing acrylate and/or a bifunctional fluorine-containing methacrylate; a component B including a bifunctional acrylate having a benzene ring and/or a bifunctional methacrylate having a benzene ring; and a component C of a photopolymerization initiator.
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
C08F 220/20 - Esters of polyhydric alcohols or phenols
The present invention addresses the problem of providing an optical system with which it is possible to carry out estimation on a small scale even when the angle of view has been widened and which has excellent optical performance, and an optical device comprising the optical system. In order to solve this problem, provided is an optical system to be used while brought in contact with an eye, the optical system being characterized by being configured from a first lens group G1 having positive refractive power and a second lens group G2, the lens groups being positioned in order from the eye-contact side, and the second lens group G2 including lenses in which the eye-contact side is a concave surface. In addition, the optical device comprises the optical system and an imaging element.
A variable magnification optical system capable of realizing a high-resolution observation image display system that can arbitrarily change an observation field of view without changing a working distance of an observation optical system while keeping the observation optical system small in size and an imaging apparatus including the variable magnification optical system.
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 15/16 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
G02B 23/24 - Instruments for viewing the inside of hollow bodies, e.g. fibrescopes
G02B 27/64 - Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
G03B 5/00 - Adjustment of optical system relative to image or object surface other than for focusing of general interest for cameras, projectors or printers
60.
PHOTOACOUSTIC ELEMENT, PHOTOACOUSTIC IMAGING DEVICE, AND PHOTOACOUSTIC ELEMENT MANUFACTURING METHOD
The present invention achieves a photoacoustic element having superior optical properties and acoustic properties. A photoacoustic element (1) comprises: a metal layer (10); a first member (11) joined to one primary surface of the metal layer (10); and a second member (12) joined to another primary surface of the metal layer (10). The metal layer (10) reflects light waves and allows photoacoustic waves derived from the light waves to pass therethrough. Materials for the metal layer (10), the first member (11), and the second member (12) are selected so that the acoustic impedance of the metal layer (10) and the acoustic impedances of the first member (11) and the second member (12) match.
There is provided an imaging lens and an imaging device with a wide angle of view capable of forming an image of an object near an optical axis with a high resolution while having a small size as a whole. The imaging lens is an imaging lens including a first lens G1 having a convex surface on an object side and having a negative refractive power, a second lens G2 having a concave surface on an object side, a third lens G3, a fourth lens G4, a fifth lens G5, and a sixth lens G6, which are sequentially arranged from the object side, and satisfies a predetermined condition. Further, an imaging device according to the present invention includes the imaging lens.
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
62.
Imaging optics and imaging device including seven lenses of -++-++- or -++-+-refractive powers
An imaging optics including, in sequence starting from the object side, of a 1st lens G1 with a negative refractive power, a 2nd lens G2 with a positive refractive power, a 3rd lens G3 with a positive refractive power, and a 4th lens G4, a 5th lens G5, a 6th lens G6, and a 7th lens G7 with a negative refractive power, satisfying the conditional expressions.
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 9/64 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having more than six components
An imaging lens and an imaging device furnished with same, including a first lens group having a positive refractive power, a second lens group having a positive refractive power, and a third lens group having a negative refractive power, disposed in sequence from the object side, wherein zooming from a point at infinity to an object at the near point is performed by moving the second lens group along an optical axis toward the object side while affixing the first lens group and third lens group, and satisfying predetermined conditional expressions.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only
An observation imaging apparatus includes an insertion unit, an imaging lens, and an image sensor. The imaging lens is disposed in such a manner that an axial principal ray of an observation subject side surface of a lens is tilted with respect to a normal line passing through the center of gravity of a section of the insertion unit, the section passing through the center of an effective imaging range of the image sensor and having the smallest area. A point on the axial principal ray at which the distance between the normal line and the axial principal ray is smallest is located on the image side relative to the observation subject side surface of the lens and on the observation subject side relative to the image sensor. The observation imaging apparatus satisfies a predetermined conditional expression.
G02B 23/24 - Instruments for viewing the inside of hollow bodies, e.g. fibrescopes
A61B 1/05 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
The antireflection film according to the present invention is provided in an optical element having a convex optical surface. The maximum inclination angle of an inclination angle θ of the convex optical surface, which is shown by an angle formed by a normal line and an optical axis at a measurement location, is 25° or more. The antireflection film is characterized by having a multilayer structure composed of a plurality of optical thin films provided on the convex optical surface side, wherein, in each of the optical thin films, when a point at which the convex optical surface and the optical axis intersect at right angles is defined as a center, at least part of the film provided in a region where the inclination angle θ of the convex optical surface is 25° or more is thicker than the physical film thickness of the film provided in the center of the convex optical surface.
An imaging optical system includes, in order from an object side, a first lens having negative refractive power, a second lens having positive refractive power, a third lens having positive refractive power, a fourth lens and a fifth lens, with the fourth lens and the fifth lens not cemented, in which a predetermined conditional expressions is satisfied.
G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 23/24 - Instruments for viewing the inside of hollow bodies, e.g. fibrescopes
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
To attain the above-described objective, a zoom lens according to the present invention includes sequentially from an object side, a front group which includes at least three lens groups and has positive refractive power as a whole, and a lens group disposed on an image side of the front group, a magnification is changed by a change of a distance on an optical axis between adjacent lens groups, the lens group includes sequentially from an image side, a lens component, a lens component, and a lens component, the lens group is moved to an object side at a time of changing a magnification from a wide-angle end to a telephoto end, focusing is obtained by movement of a part of lens groups in the front group along an optical axis, and a predetermined condition expression is satisfied.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 15/173 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged + – +
G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 15/20 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having an additional movable lens or lens group for varying the objective focal length
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
H04N 5/232 - Devices for controlling television cameras, e.g. remote control
H04N 5/335 - Transforming light or analogous information into electric information using solid-state image sensors [SSIS]
G02B 7/10 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
Provided is an optical system and an imaging apparatus provided with the optical system. The optical system includes: a first lens having negative refractive power; a second lens having negative refractive power; a third lens having positive refractive power; and a fourth lens having positive refractive power, the first lens, the second lens, the third lens, and the fourth lens being disposed in this order from an object side. The optical system satisfies a predetermined condition relating to the focal length of the optical system and the distance on the optical axis between an exit pupil and an imaging plane in the optical system.
G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
A correction lens is used in an optical system in which a light-transmissive cover member having radii of curvature different from each other in a predetermined first direction and a second direction perpendicular to the first direction is disposed on an object side. Radii of curvature of an image-side surface of the correction lens are different in the first direction and the second direction, and satisfy a predetermined condition.
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 9/64 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having more than six components
70.
Image stabilization device, lens unit or imaging device including the same, and image stabilization method
The present invention relates to an image stabilization device for correcting an image shake formed on an image face of an imaging device, and the image stabilization device includes a shake angle sensor configured to detect a shake angle of the imaging device, a correction amount calculation unit configured to set a movement amount of an image stabilization lens composing a part of an imaging optical system provided in the imaging device or a movement amount of the imaging face based on the shake angle detected by the shake angle sensor so that the image shake formed on the imaging face is suppressed, and an actuator configured to move the image stabilization lens or the imaging face by the movement amount set by the correction amount calculation unit in a plane orthogonal to an optical axis of the imaging device.
One purpose of the present invention is to provide: an antireflection film which has low reflectance, low reflection color unevenness, and excellent durability; and an optical device having the same. Furthermore, another purpose of the present invention is to provide a method for forming said antireflection film with good productivity. The antireflection film according to the present invention is an antireflection film 1 of an optical device 11 having a convex optical surface 11a which has a maximum inclination angle of 25°or higher, the antireflection film 1 having a multilayer structure and being provided on the convex optical surface 11a side, wherein in each of optical thin films 2 constituting the multilayer structure, a filling rate in any region is 90% or more, an L value in the L*a*b*color system of CIE1976 satisfies conditional expression (1) below, and Δa, a difference between a-values in any two regions, and Δb, a difference between b-values in said two regions satisfy conditional expression (2) below. L < 5 …… (1) (Δa2+Δb2)1/2 < 5 …… (2)
The purpose of the present invention is to provide an image-capturing system capable of suppressing the amount of data related to image acquisition by means of a simple method and maintaining high analytic accuracy. In order to achieve this purpose, provided is an imaging system comprising an image-capturing device which acquires image data on a subject, and an image-capturing control device that controls image acquisition by the image-capturing device, wherein the image-capturing control device includes: a differential extraction means which extracts differential data on the basis of two arbitrary pieces of image data acquired by the image-capturing device; a change amount extraction means which extracts change amount data on the basis of the two arbitrary pieces of differential data extracted by the differential extraction means; and a condition changing means which changes an image acquisition condition in the image-capturing device, on the basis of the change amount data extracted by the change amount extraction means.
G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
G03B 15/00 - Special procedures for taking photographsApparatus therefor
73.
LENS-BASED OPTICAL SYSTEM AND IMAGE CAPTURE DEVICE
The purpose of the present invention is to provide a lens-based optical system and an image capture device capable of efficiently introducing the reflective light from an object to an image capture element. The present invention provides a lens-based optical lens system to be used only within a wavelength range of N±50 nm, wherein the lens-based optical system has a band-pass filter that allows only wavelengths within the range of N±50 nm to pass therethrough, the lens-based optical system has at least one or more faces that have a negative refractive power, and a prescribed conditional expression is satisfied.
G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
74.
OPTICAL ELEMENT WITH ANTI-REFLECTION STRUCTURE, METHOD FOR PRODUCING SAME, METHOD FOR PRODUCING PRODUCTION MOLD, AND IMAGING DEVICE
The purpose of the present invention is to provide an optical element or the like, which has an anti-reflection structure in the surface, and which is able to be easily formed by a press molding method, while having anti-reflection properties with excellent incidence angle characteristics. In order to achieve this purpose, the present invention employs an optical element with an anti-reflection structure, which has an anti-reflection structure on a lens surface, and which is characterized in that: the anti-reflection structure is composed of a plurality of fine columnar projections that are provided on the lens surface; and if h is the projection distance in the optical axis direction of a fine columnar projection in an arbitrary position and h0 is the projection distance in the optical axis direction of a fine columnar projection that is positioned in the center of the lens surface, h and h0 satisfy conditional expression (1).
G02B 1/118 - Anti-reflection coatings having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
B29C 59/02 - Surface shaping, e.g. embossingApparatus therefor by mechanical means, e.g. pressing
The present invention addresses the problem of providing an imaging lens with a wide angle of view which allows an object near the optical axis to be focused at a higher resolution while having the overall size thereof reduced, and an imaging device. To solve the problem, the imaging lens according to the present invention comprises, in order from the object side, a first lens G1 having a negative refractive power with a convex surface facing the object side, a second lens G2 having a concave surface facing the object side, a third lens G3, a fourth lens G4, a fifth lens G5, and a sixth lens G6, said imaging lens satisfying a given condition. The imaging device according to the present invention includes the imaging lens.
G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
76.
Observation optical system, observation imaging device, observation imaging system, image forming lens system, and method of adjusting observation optical system
A small observation optical system having a high resolution, an observation imaging device that includes the observation optical system, an observation imaging system, an image forming lens system, and a method of adjusting the observation optical system. The observation optical system includes an objective lens system G1 and an image forming lens system G2, sequentially from the observation object side, and the image forming lens system G2 forms an observation object image forms through the objective lens system G1, on an image plane IP of an image sensor, and satisfies predetermined condition.
A zoom lens including a front group and a rear group, wherein a lens group arranged on an object side of a widest air interval at a wide-angle end is defined as the front group and a lens group arranged on an image side of the widest air interval at the wide-angle end is defined as the rear group, the front group having a negative refractive power, the rear group having a positive refractive power. Changing focal length from the wide-angle end to the telephoto end is performed by changing an air interval between the lens groups.
G02B 15/17 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged + ––
G02B 15/177 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
G02B 27/64 - Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
Disclosed are a disturbance light identifying apparatus, a disturbance light separating apparatus, a disturbance light identifying method, and a disturbance light separating method capable of precisely identifying whether or not light exiting an optical system contains a disturbance light component or capable of separating such a disturbance light component by using a simple technique. Provided are: a modulated light irradiation unit that irradiates an optical system 1 with modulated light; a light receiving unit that receives light exiting the optical system 1 in response to an incidence of the modulated light from the modulated light irradiation unit; and a controlling unit that controls the modulated light irradiation unit and the light receiving unit.
An imaging lens according to the present invention includes a negative first lens, a meniscus-shaped negative second lens having a concave surface facing to an object side, a positive third lens, a positive fourth lens having a convex surface on the object side, a positive fifth lens, a negative sixth lens, and a positive seventh lens arranged in order from the object side. Furthermore, an imaging device according to the present invention includes the imaging lens.
G02B 9/64 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having more than six components
Provided are: a binocular telescope which is equipped with a distance measuring function, and which can correct shaking of an image in a wide range and can correct shaking of an image with high accuracy; and a method for manufacturing the same. The present invention provides a binocular telescope (1) characterized by having: a binocular telescope housing (2); an objective lens system (4); an ocular lens system (6); a pair of hand-shaking correcting lens system (8) which stabilizes an image; a lens actuator (10) which drives the hand-shaking correcting lens system; a shaking detecting sensor (12); a control device (14) which controls the lens actuator; a laser beam source (16) which emits a laser beam from a first objective lens system through a first hand-shaking correcting lens system; a light receiving element (22) which receives the laser beam reflected by an object to be observed, through a second objective lens system and a second hand-shaking correcting lens system; and a calculation device (2) which calculates the distance to the object to be observed, on the basis of the laser bean received by the light receiving element.
G02B 23/02 - Telescopes, e.g. binocularsPeriscopesInstruments for viewing the inside of hollow bodiesViewfindersOptical aiming or sighting devices involving prisms or mirrors
G01C 3/06 - Use of electric means to obtain final indication
G01S 7/481 - Constructional features, e.g. arrangements of optical elements
G01S 17/36 - Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
G03B 5/00 - Adjustment of optical system relative to image or object surface other than for focusing of general interest for cameras, projectors or printers
An imaging lens and an imaging apparatus capable of acquiring a long-distance object image at high resolution and capable of acquiring a short-distance object image in a wide range while, as a whole, being configured small. In order to achieve the object, an imaging lens according to the present invention is an imaging lens consisting of n (n is a natural number equal to or larger than six) lenses including a first lens having negative refractive power and a second lens having positive refractive power in order from an object side and including an n-th lens having negative refractive power and an n−1-th lens having positive refractive power in order from an image side, the imaging lens satisfying a predetermined conditional expression.
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
G02B 9/64 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having more than six components
G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
82.
ACTUATOR, LENS UNIT EQUIPPED WITH SAME, AND CAMERA
The present invention provides an actuator (10) for correcting image shake that is characterized by comprising a fixed part (12), a moving part (14) with an image shake correction lens (16) attached thereto, a moving part support means (18) for supporting the moving part, three or more driving coil assemblies (20, 21, 22) arranged around the optical axis of the moving part, and three or more driving magnet assemblies (23, 24, 25) provided on the fixed part so as to face the respective driving coil assemblies, and in that: each driving coil assembly is constituted by three or more mutually adjacent coils; and the center points of the coils arranged at both ends are located closer to the optical axis than a straight line that passes through the center point of the coil arranged at the central position and is tangent to the circle centered at the optical axis.
G03B 5/00 - Adjustment of optical system relative to image or object surface other than for focusing of general interest for cameras, projectors or printers
09 - Scientific and electric apparatus and instruments
Goods & Services
Infrared human-detecting security alarm apparatus; Photographic apparatus and instruments; Motion picture apparatus and instruments; Optical apparatus and instruments; Cameras; Lenses for cameras; Interchangeable lenses for cameras; Measuring apparatus and instruments; Apparatus and instruments for measuring the temperature of an object; Electrical distribution or Control machines and instruments; Rotary Converters; Phase Modifiers; Electrical communication machines and instruments; Digital cameras; Camera modules for digital cameras; Lenses for digital cameras; Interchangeable lenses for digital cameras; Security cameras; Lenses for security cameras; Interchangeable lenses for security cameras; Vehicle-mounted cameras; Vehicle-mounted camera lenses; CCTV cameras; Lenses for CCTV cameras; Interchangeable lenses for CCTV cameras; Network cameras; Network camera lenses; Interchangeable lenses for network cameras; Digital video cameras; Camera modules for digital video cameras; Lenses for digital video cameras; Camera modules for mobile phones with cameras; Lenses for camera modules for mobile phones with cameras; Infrared cameras; Infrared camera lenses; Interchangeable lenses for infrared cameras; Security cameras for use indoors; Web cameras; High-sensitivity cameras; High-sensitivity digital cameras; Camera modules for high-sensitivity digital cameras; Lenses for high-sensitivity digital cameras; Interchangeable lenses for high-sensitivity digital cameras; High-sensitivity security cameras; Lenses for high-sensitivity security cameras; Interchangeable lenses for high-sensitivity security cameras; High-sensitivity vehicle-mounted cameras; High-sensitivity vehicle-mounted camera lenses; High-sensitivity CCTV cameras; Lenses for high-sensitivity CCTV cameras; Interchangeable lenses for high-sensitivity CCTV cameras; High-sensitivity network cameras; High-sensitivity network camera lenses; Interchangeable lenses for high-sensitivity network cameras; High-sensitivity digital video cameras; Camera modules for high-sensitivity digital video cameras; Lenses for high-sensitivity digital video cameras; Camera modules for mobile phones with high-sensitivity cameras; Lenses for camera modules for mobile phones with high-sensitivity cameras; High-sensitivity infrared cameras; High-sensitivity infrared camera lenses; Interchangeable lenses for high-sensitivity infrared cameras; High-sensitivity security cameras for use indoors; Electronic circuits (exclusive of those recorded with computer programs); Computer programs.
09 - Scientific and electric apparatus and instruments
Goods & Services
Infrared human-detecting security alarm apparatus in the nature of an infrared human-detecting security alarm; Photographic apparatus and instruments in the nature of a camera; Motion picture apparatus and instruments in the nature of motion picture cameras; Optical apparatus and instruments, namely, optical transmitters, optical receivers, binoculars, telescope, microscope; Cameras; Lenses for cameras; Interchangeable lenses for cameras; Apparatus and instruments for measuring the temperature of an object, namely, thermography cameras; Rotary Converters; Phase Modifiers, namely, power controllers; Digital cameras; Camera modules in the nature of image sensors for digital cameras; Lenses for digital cameras; Interchangeable lenses for digital cameras; Security cameras; Lenses for security cameras; Interchangeable lenses for security cameras; Vehicle-mounted cameras; Vehicle-mounted camera lenses; Closed Circuit TV (CCTV) cameras; Lenses for Closed Circuit TV (CCTV) cameras; Interchangeable lenses for Closed Circuit TV (CCTV) cameras; Network cameras; Network camera lenses; Interchangeable lenses for network cameras; Digital video cameras; Camera modules in the nature of image sensors for digital video cameras; Lenses for digital video cameras; Camera modules in the nature of image sensors for mobile phones with cameras; Lenses for camera modules for mobile phones with cameras; Infrared cameras; Infrared camera lenses; Interchangeable lenses for infrared cameras; Security cameras for use indoors; Web cameras; High-sensitivity cameras; High-sensitivity digital cameras; Camera modules in the nature of image sensors for high-sensitivity digital cameras; Lenses for high-sensitivity digital cameras; Interchangeable lenses for high-sensitivity digital cameras; High-sensitivity security cameras; Lenses for high-sensitivity security cameras; Interchangeable lenses for high-sensitivity security cameras; High-sensitivity vehicle-mounted cameras; High-sensitivity vehicle-mounted camera lenses; High-sensitivity Closed Circuit TV (CCTV) cameras; Lenses for high-sensitivity Closed Circuit TV (CCTV) cameras; Interchangeable lenses for high-sensitivity Closed Circuit TV (CCTV) cameras; High-sensitivity network cameras; High-sensitivity network camera lenses; Interchangeable lenses for high-sensitivity network cameras; High-sensitivity digital video cameras; Camera modules in the nature of image sensors for high-sensitivity digital video cameras; Lenses for high-sensitivity digital video cameras; Camera modules in the nature of image sensors for mobile phones with high-sensitivity cameras; Lenses for camera modules for mobile phones with high-sensitivity cameras; High-sensitivity infrared cameras; High-sensitivity infrared camera lenses; Interchangeable lenses for high-sensitivity infrared cameras; High-sensitivity security cameras for use indoors
The present invention provides a zoom lens that can perform favorable correction of chromatic aberration in the entire zoom range, and can have higher performance and a smaller size than conventional ones; and an imaging apparatus including the zoom lens. To achieve the object, provided are a zoom lens and an imaging apparatus including the zoom lens. The zoom lens includes, in order from an object side: a positive first lens group G1; a negative second lens group G2; and a GR group including one or more lens groups. In the zoom lens, changing focal length is performed by varying intervals between the lens groups. The GR group has at least two cemented surfaces having negative refractive power, convex lenses GpH and GpL satisfying predetermined conditional expressions. An aperture stop is arranged in the first lens group or after. The zoom lens satisfies predetermined conditional expressions.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 7/14 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses adapted to interchange lenses
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
H04N 5/335 - Transforming light or analogous information into electric information using solid-state image sensors [SSIS]
G02B 9/04 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only
An object of the present invention is to provide a zoom lens that can perform favorable correction of chromatic aberration in the entire zoom range, and can have higher performance and a smaller size than conventional ones; and an imaging apparatus including the zoom lens. To achieve the object, provided are a zoom lens and an imaging apparatus including the zoom lens. The zoom lens includes, in order from an object side: a positive first lens group G1; a negative second lens group G2; and a GR group including one or more lens groups. In the zoom lens, changing focal length is performed by varying intervals between the lens groups. The GR group includes convex lenses GpH and GpL satisfying predetermined conditional expressions. The convex lens GpH is the positive lens which is arranged second position or after from the object side in positive lenses in the GR group.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
G02B 7/14 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses adapted to interchange lenses
H04N 5/335 - Transforming light or analogous information into electric information using solid-state image sensors [SSIS]
G02B 7/04 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
G02B 15/173 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged + – +
The present invention addresses a problem of providing a zoom lens which achieves a longer focal length and has a shorter optical overall length at the telephoto end, and an imaging apparatus provided with the zoom lens. In order to solve the problem, a zoom lens is configured to include, in order from the object side, a positive first lens group G1, a negative second lens group G2, a positive composite positive lens group, and a negative composite negative lens group. The composite positive lens group includes a positive third lens group G3, and is consisting of one or more lens groups having positive refractive power. The composite negative lens group includes a negative A lens group and a negative B lens group having negative refractive power. In the zoom lens, changing focal length is performed by varying distances between the lens groups, and a predetermined condition is satisfied.
H04N 5/232 - Devices for controlling television cameras, e.g. remote control
G02B 15/20 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having an additional movable lens or lens group for varying the objective focal length
G02B 13/02 - Telephoto objectives, i.e. systems of the type + – in which the distance from the front vertex to the image plane is less than the equivalent focal length
G03B 13/00 - ViewfindersFocusing aids for camerasMeans for focusing for camerasAutofocus systems for cameras
G03B 5/04 - Vertical adjustment of lensRising fronts
G02B 15/173 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged + – +
G02B 27/64 - Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
G02B 13/00 - Optical objectives specially designed for the purposes specified below
88.
VARIABLE-MAGNIFICATION OPTICAL SYSTEM AND IMAGE PICKUP DEVICE
The present invention addresses the problem of providing a variable-magnification optical system and an image pickup device provided with the variable-magnification optical system, which enable the realization of a high-resolution observation image display system that can freely change the observation visual field, while maintaining the small size of an observation optical system and without causing the operation distance of the observation optical system to change. In order to solve this problem: this variable-magnification optical system comprises a first lens group G1, which is connected to the observation optical system and is disposed closest to the observation optical system side, a final lens group (G4), which is disposed closest to the image side, and a plurality of moveable lens groups (G2, G3) which are disposed between the first lens group G1 and the final lens group and which can move in the optical axis direction; and the variable-magnification optical system is configured so that the first lens group G1 and the final lens group are fixed in the optical axis direction, magnification is varied by causing the plurality of moveable lens groups to move in the optical axis direction, and focusing from the farthest-point object to the nearest-point object is carried out by causing at least one of the plurality of moveable lens groups to move in the optical axis direction.
G02B 15/167 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
G02B 15/20 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having an additional movable lens or lens group for varying the objective focal length
G02B 23/26 - Instruments for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
G03B 5/00 - Adjustment of optical system relative to image or object surface other than for focusing of general interest for cameras, projectors or printers
The present invention provides a zoom lens which is the zoom lens that includes a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, and a third lens group G3 having positive refractive power in order from an object side, and changes focal length by changing an air interval between the respective lens groups, the zoom lens including a focus group F constituted from one lens in or after the third lens group G3, moving only the focus group F along an optical axis direction when focusing from an infinity object to a proximity object, and satisfying specific conditional expressions, and an imaging apparatus including the zoom lens.
G02B 15/173 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged + – +
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
G02B 13/02 - Telephoto objectives, i.e. systems of the type + – in which the distance from the front vertex to the image plane is less than the equivalent focal length
An imaging optical system according to the present invention is the imaging optical system composed by arranging a front group, a stop, and a rear group in order from an object side, a lens arranged closest to the stop in the front group is a positive lens, a lens arranged closest to the stop in the rear group is also a positive lens, and specific conditional expressions are satisfied. In addition, an imaging apparatus according to the present invention includes the imaging optical system.
H04N 5/232 - Devices for controlling television cameras, e.g. remote control
G02B 23/26 - Instruments for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
G02B 17/02 - Catoptric systems, e.g. image erecting and reversing system
G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
G02B 13/00 - Optical objectives specially designed for the purposes specified below
A contacted multilayer diffractive optical element having reduced wavelength dependency of diffraction efficiency, the contacted multilayer diffractive optical element facilitating processing in manufacture and being suitable for an infrared optical system, and an infrared optical system and an image pickup apparatus using the diffractive optical element. In order to achieve the above object, a contacted multilayer diffractive optical element comprises a first layer consisting of a first chalcogenide glass material and a second layer consisting of a second chalcogenide glass material, the first chalcogenide glass material and the second chalcogenide glass material satisfying a predetermined conditional expression and being in contact with and stacked on each other, and a diffraction grating structure in a surface of the contact therebetween, and an infrared optical system and an image pickup apparatus comprising the contacted multilayer diffractive optical element are provided.
A variable magnification optical system according to the present invention includes, in order from an object side: a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having positive refractive power, and a following lens group, wherein at least the second lens group is moved so that a gap between the first lens group and the second lens group increases and a gap between the second lens group and the third lens group decreases when zooming from a wide angle end to a telephoto end, and a predetermined conditional expression is satisfied.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 15/16 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
G02B 15/173 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged + – +
93.
OBSERVATION OPTICAL SYSTEM, OBSERVATION IMAGING DEVICE, OBSERVATION IMAGING SYSTEM, IMAGE FORMING LENS SYSTEM, AND METHOD FOR ADJUSTING OBSERVATION OPTICAL SYSTEM
The present invention addresses the problem of providing: a compact observation optical system having high resolution; an observation imaging device and an observation imaging system that include the observation optical system; an image forming lens system; and a method for adjusting an observation optical system. In order to solve the problem, the observation optical system according to the present invention comprises, in order from an observation subject side, an objective lens system G1 and an image forming lens system G2, and forms an observation subject image, which is formed by the objective lens system G1, onto an image plane IP of an imaging element by the image forming lens system G2, the observation optical system satisfying predetermined conditions.
G02B 13/00 - Optical objectives specially designed for the purposes specified below
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
09 - Scientific and electric apparatus and instruments
Goods & Services
Integrated index glass sold as part of optical and photographic lenses; electronic and optical communications instruments and components, namely, optical data links; optical devices and components, namely, custom-designed mirrors for laser applications, polarized beam splitters, prisms; optical engines for LCD projectors; beam splitters for laser optical system; lenses for laser optical system; dichroic optical mirrors, dichroic optical prisms; optical apparatus and instruments, namely, test plates for inspection of lens surface accuracy; zoom cam cameras, namely, cameras with a built-in zoom lens; optical lens units, namely, digital camera lens units, video camera lens units, mobile phone camera lens units; digital cameras, medium format cameras, closed circuit television cameras, and other cameras; lenses, namely, photographic lenses, closed circuit television camera lenses, digital camera lenses, video camera lenses, mobile phone camera lenses, aspherical lenses, spherical lenses, projection lenses, motorized zoom lenses, vari-focal lenses, fixed focal lenses for surveillance, interchangeable lenses for digital cameras and other cameras, lenses for monitor cameras, lenses for factory automation, magnification zoom lenses, wide-angle lenses, telephoto lenses; macro lenses, fixed focal length lenses, infrared lenses; photographical apparatus and instruments, namely, photography filters, teleconverters, camera photography hoods, monopods for cameras, shoulder cases for cameras, camera bags, camera cases, camera lens caps, camera mount adapters, film backs, camera view finders; eyeglasses, contact lenses; and optical apparatus and instruments, namely, test plates for inspection of photographic optical lens surface accuracy, infrared cameras, infrared camera lens units, vehicle cameras, vehicle camera lenses, vehicle camera lens units, panorama view cameras, optical system for vehicle lighting comprised of optical reflectors, light emitting diodes and optical lenses, far-infrared cameras, interchangeable lenses for far-infrared cameras, far-infrared lens units, far-infrared lenses, dome cameras, fisheye lenses; antireflective feature of optical lens units; web cameras; high sensitive zoom cam cameras, namely, high sensitive cameras with a built-in zoom lens; optical lens units, namely, high sensitive digital camera lens units, high sensitive video camera lens units, high sensitive mobile phone camera lens units; high sensitive digital cameras, high sensitive medium format cameras, high sensitive closed circuit television cameras, and other high sensitive cameras; lenses, namely, high sensitive photographic camera lenses, high sensitive closed circuit television camera lenses, high sensitive digital camera lenses, high sensitive video camera lenses, high sensitive mobile phone camera lenses, lenses for high sensitive surveillance cameras, interchangeable lenses for high sensitive digital cameras and other high sensitive cameras, lenses for high sensitive monitoring cameras, high sensitive infrared camera lenses; high sensitive infrared cameras, high sensitive infrared camera lens units, high sensitive vehicle cameras, high sensitive vehicle camera lenses, high sensitive vehicle camera lens units, high sensitive panorama view cameras, high sensitive far-infrared cameras, interchangeable lenses for high sensitive far-infrared cameras, high sensitive far-infrared camera lens units, high sensitive far-infrared camera lenses, high sensitive; dome cameras; network cameras, network camera lenses, network camera lens units, interchangeable lenses for network cameras, high sensitive network cameras, high sensitive network camera lenses, high sensitive network camera lens units, interchangeable lenses for high sensitive network cameras
09 - Scientific and electric apparatus and instruments
Goods & Services
Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus, devices and instruments; apparatus, device and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus, devices and instruments for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; mechanism for coin-operated apparatus, devices and instruments; cash registers, calculating machines, data-processing equipment and computers; fire-extinguishing apparatus; optical devices and components for input/output equipment (including scanners, copy machines, fax machines, printers), recording apparatus (including optical data media), display units; custom-designed mirrors for laser applications, polarized beam splitters, prisms, thin film coating products, optical engines for LCD projectors, devices for laser optical systems, dichroic mirrors, dichroic prisms, digital camera lens units, video camera lens units, camera mobile-phone lens units; optical apparatus and instruments including test plates for inspection of lens surface accuracy, zoom cam cameras (camera with a built-in zoom lens), digital cameras, medium format cameras, CCTV cameras, other cameras, lenses, including photographic lenses, CCTV camera lenses, digital camera lenses, video camera lenses, camera mobile-phone lenses, aspherical lenses, spherical lenses; optical apparatus and instruments including projection lenses, motorised zoom lenses, vari-focal lenses, fixed focal lenses for surveillance, interchangeable lenses for digital cameras and other cameras, lenses for monitor cameras, lenses for factory automation, magnification zoom lenses, wide-angle lenses, telephoto lenses, macro lenses, fixed focal length lenses, infrared lenses, filters (photography), tele-converters, hoods (photography), monopods; shoulder cases for cameras, camera bags, camera cases, lens caps, mount adapters, film backs, view finders, other parts and accessories for digital cameras and other camera; cinematographic apparatus and instruments; interferometer, spherometers; moulding dies for optical apparatus and instruments, plastic moulded components for optical apparatus and instruments; eyeglasses, contact lenses; telecommunication machines, apparatus, their parts and accessories; infrared cameras, infrared camera lens units, vehicle cameras, vehicle camera lenses, vehicle camera lens units, panorama view cameras, optical system for vehicle lighting, far-infrared cameras, interchangeable lenses for far-infrared cameras, far-infrared lens units, far-infrared lenses, dome cameras, fish-eye lenses; web cameras; high sensitive digital camera lens units, high sensitive video camera lens units, high sensitive camera mobile-phone lens units, high sensitive zoom cam cameras (camera with a built-in zoom lens), high sensitive digital cameras, high sensitive medium format cameras, high sensitive CCTV cameras; other high sensitive cameras, lenses, including high sensitive photographic camera lenses, high sensitive CCTV camera lenses, high sensitive digital camera lenses, high sensitive video camera lenses, high sensitive camera mobile-phone lenses; lenses for high sensitive surveillance cameras, interchangeable lenses for high sensitive digital cameras and other high sensitive cameras, lenses for high sensitive monitoring cameras, high sensitive infrared camera lenses, high sensitive infrared cameras, high sensitive infrared camera lens units; high sensitive vehicle cameras, high sensitive vehicle camera lenses, high sensitive vehicle camera lens units, high sensitive panorama view cameras, high sensitive far-infrared cameras, interchangeable lenses for high sensitive far-infrared cameras, high sensitive far-infrared camera lens units, lenses for high sensitive far-infrared cameras; high sensitive dome cameras, network cameras, network camera lenses, network camera lens units, interchangeable lenses for network cameras, high sensitive network cameras, high sensitive network camera lenses, high sensitive network camera lens units, interchangeable lenses for high sensitive network cameras.
09 - Scientific and electric apparatus and instruments
Goods & Services
Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus, devices and instruments; apparatus, device and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus, devices and instruments for recording, transmission or reproduction of sound; magnetic data carriers, recording discs; mechanism for coin-operated apparatus, devices and instruments; cash registers, calculating machines, data-processing equipment; fire-extinguishing apparatus; optical devices and components for input/output equipment (including scanners, copy machines, fax machines, printers), custom-designed mirrors for laser applications, polarized beam splitters, prisms, thin film coating products, optical engines for LCD projectors, devices for laser optical systems, dichroic mirrors, dichroic prisms, digital camera lens units, video camera lens units, camera mobile-phone lens units; optical apparatus and instruments including test plates for inspection of lens surface accuracy, zoom cam cameras (camera with a built-in zoom lens), digital cameras, medium format cameras, CCTV cameras, other cameras, lenses, including photographic lenses, CCTV camera lenses, digital camera lenses, video camera lenses, camera mobile-phone lenses, aspherical lenses, spherical lenses; optical apparatus and instruments including projection lenses, motorised zoom lenses, vari-focal lenses, fixed focal lenses for surveillance, interchangeable lenses for digital cameras and other cameras, lenses for monitor cameras, lenses for factory automation, magnification zoom lenses, wide-angle lenses, telephoto lenses, macro lenses, fixed focal length lenses, infrared lenses, filters (photography), tele-converters, hoods (photography), monopods; shoulder cases for cameras, camera bags, camera cases, lens caps, mount adapters, film backs, view finders, other parts and accessories for digital cameras and other camera; cinematographic apparatus and instruments; interferometer, spherometers; moulding dies for optical apparatus and instruments, plastic moulded components for optical apparatus and instruments; eyeglasses, contact lenses; telecommunication machines, apparatus, their parts and accessories; infrared cameras, infrared camera lens units, vehicle cameras, vehicle camera lenses, vehicle camera lens units, panorama view cameras, optical system for vehicle lighting, far-infrared cameras, interchangeable lenses for far-infrared cameras, far-infrared lens units, far-infrared lenses, dome cameras, fish-eye lenses; web cameras; high sensitive digital camera lens units, high sensitive video camera lens units, high sensitive camera mobile-phone lens units, high sensitive zoom cam cameras (camera with a built-in zoom lens), high sensitive digital cameras, high sensitive medium format cameras, high sensitive CCTV cameras; other high sensitive cameras, lenses, including high sensitive photographic camera lenses, high sensitive CCTV camera lenses, high sensitive digital camera lenses, high sensitive video camera lenses, high sensitive camera mobile-phone lenses; lenses for high sensitive surveillance cameras, interchangeable lenses for high sensitive digital cameras and other high sensitive cameras, lenses for high sensitive monitoring cameras, high sensitive infrared camera lenses, high sensitive infrared cameras, high sensitive infrared camera lens units; high sensitive vehicle cameras, high sensitive vehicle camera lenses, high sensitive vehicle camera lens units, high sensitive panorama view cameras, high sensitive far-infrared cameras, interchangeable lenses for high sensitive far-infrared cameras, high sensitive far-infrared camera lens units, lenses for high sensitive far-infrared cameras; high sensitive dome cameras, network cameras, network camera lenses, network camera lens units, interchangeable lenses for network cameras, high sensitive network cameras, high sensitive network camera lenses, high sensitive network camera lens units, interchangeable lenses for high sensitive network cameras.
09 - Scientific and electric apparatus and instruments
Goods & Services
Camera lenses embedded with motors to engage the autofocus function of such lenses, expressly excluding camera lenses or lens motors for use with fish finders or travelling in trade channels where fish finders are sold
A lens unit and a rear-side focus adjustment system for infrared cameras capable of performing rear-side focus adjustments even when the position of the detection surface of an infrared sensor is unknown in an infrared camera. The lens unit is detachably mounted on a camera body that detects infrared light with an infrared sensor and converts the infrared light to an image signal, the lens unit including a focus adjustment lens and controller. The controller calculates a rear-side focus adjustment amount for causing a rear-side focus position to correspond to the detection surface based on an error between an actually measured focused position of the focus adjustment lens relative to an object at a particular object distance and a theoretically focused position of the focus adjustment lens calculated based on the object distance and controls the position of the focus adjustment lens based on the rear-side focus adjustment amount.
G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
G02B 7/09 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
The present invention addresses the problem of providing an adhesively laminated diffractive optical element having low wavelength dependence of diffraction efficiency, which can be easily worked during manufacture and is suitable for an infrared optical system, and providing an infrared optical system and an imaging device that use this diffractive optical element. To solve the abovementioned problem, provided are an adhesively laminated diffractive optical element 100 characterized in that a first layer 10 comprising a first chalcogenide glass material satisfying a predetermined conditional expression and a second layer comprising a second chalcogenide glass material are adhesively laminated, and a diffraction grating structure 30 is provided in an adhesion surface therebetween, and an infrared optical system and an imaging device that include this adhesively laminated diffractive optical element 100.
