METHOD FOR PRODUCING A LAMINATING COMPONENT OR A HOLOGRAM COMPONENT FOR PRODUCING A COMPOSITE GLASS, AND CORRESPONDING LAMINATING COMPONENTS, HOLOGRAM COMPONENTS, AND COMPOSITE GLASSES
The invention relates to a method for producing a laminating component or a hologram component. A holographic material, such as a holographic film, is connected either to a laminating agent in order to form a laminating component or to a transparent reinforcing material in order to form a hologram component In order to produce a composite glass, the laminating component or the hologram component can then be laminated between two glass panes, which can be curved in particular. By virtue of the laminating agent of the laminating component or the reinforcing material of the hologram component, damage to the hologram imprinted in the holographic material can be prevented or reduced.
B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
B32B 1/00 - Layered products having a non-planar shape
B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
B32B 38/00 - Ancillary operations in connection with laminating processes
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
2.
METHOD FOR REPLICATING A HOLOGRAM BY MEANS OF AN ADHESIVE COMPOSITE WEB
The invention relates to a method for replicating a hologram into a light-sensitive composite web, comprising the following steps: Providing a master element comprising a substrate part and at least one master hologram; optionally providing an incoupling element; providing an adhesive composite web comprising a light-sensitive composite web and an optical adhesive film; applying the adhesive composite web to a surface of the master element or a surface of the optional incoupling element; exposing the master element in order to replicate the at least one master hologram into the light-sensitive composite web, the optical adhesive film establishing optical contact between the light-sensitive composite web and the master element, or between the light-sensitive composite web and an incoupling element, wherein an incoupling element is optionally used for the exposure; and detaching the adhesive composite web from the master element or the incoupling element.
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
G03H 1/20 - Copying holograms by holographic means
B32B 7/06 - Interconnection of layers permitting easy separation
3.
WAVEFRONT MANIPULATOR FOR HEAD-UP DISPLAY WITH HOLOGRAPHIC ELEMENT TO CREATE A TILTED VIRTUAL IMAGE PLANE
A wavefront manipulator includes a holographic assembly which has at least two holographic elements, which are arranged directly behind one another in the beam path, at least in sections, and are designed to be reflective for at least one fixed wavelength and a fixed irradiation angle range. A first holographic element includes at least one hologram which is assigned to a hologram of a second holographic element for reflection purposes. The wavefront manipulator is designed for at least one fixed object plane to generate an image plane of a virtual image which is tilted about a fixed tilt angle θ with respect to a plane arranged perpendicular to the optical axis in the region of the image plane of a virtual image. The holographic arrangement is designed for at least partial correction of at least one imaging error of a virtual image generated in the tilted image plane.
A transparent display, comprising a holographic diffuser extending substantially in a two-dimensional diffuser plane, and comprising an enlarging reflective element, wherein the holographic diffuser and the reflective element are part of a one-piece optical unit, and wherein image rays, reflected by the reflective element, are guided inside the optical unit to the holographic diffuser.
The invention relates to devices comprising a holographic material and a holographic marking (13) provided in the holographic material. The holographic marking (13) here is only sensitive to light at a predefined wavelength and/or to light from a predefined direction, and/or is configured to diffract light only in a further predefined direction. The device can further contain a main hologram (12). The invention additionally relates to corresponding master plates for producing such devices, methods and production devices.
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/20 - Copying holograms by holographic means
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
G03H 1/30 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique discrete holograms only
G03H 1/00 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto
G03H 1/04 - Processes or apparatus for producing holograms
6.
COMPACT PHOTOMETRIC APPARATUS FOR RECONSTRUCTING A HOLOGRAM
The lighting device comprises an optical block having a coupling portion with a coupling face which is arranged to couple light into the optical block and a waveguide portion extending away from the coupling portion and designed to guide the light by multiple reflection between an upper face and a lower face of the waveguide portion. The optical block also comprises a holographical optical element that is formed in the waveguide portion and is designed to reconstruct a hologram by means of the light.
F21S 43/20 - Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
B60Q 1/32 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating vehicle sides
F21S 43/40 - Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
The present invention relates to a system for replicating an object in holography, comprising: means for irradiating the object with a beam at a set angle of incidence; means for adapting an extent of the beam before the beam is incident on the object, based at least in part on the set angle of incidence. Furthermore, the invention relates to a corresponding device and method and a corresponding computer program.
G02B 26/12 - Scanning systems using multifaceted mirrors
G02B 23/06 - Telescopes, e.g. binocularsPeriscopesInstruments for viewing the inside of hollow bodiesViewfindersOptical aiming or sighting devices involving prisms or mirrors having a focusing action, e.g. parabolic mirror
G02B 17/06 - Catoptric systems, e.g. image erecting and reversing system using mirrors only
8.
WAVEGUIDE FOR DISPLAYING AN IMAGE, AND HOLOGRAPHIC DISPLAY HAVING SUCH A WAVEGUIDE
A waveguide for displaying an image includes a transparent base body having a coupling-in region and a coupling-out region which is spaced apart therefrom in a first direction. The coupling-out region has an image hologram having an imprinted image. The coupling-in region deflects at least some of the radiation originating from a light source such that the deflected part propagates as a coupled-in beam bundle in the base body by reflection as far as the coupling-out region and impinges on the image hologram. The image hologram deflects at least part of the impinging beam bundle in order to reconstruct the imprinted image such that the deflected part exits the base body via the front face or rear face such that the imprinted image is perceptible for a viewer.
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
B60Q 3/62 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides
G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique
The invention relates to a holographic display system comprising a waveguide, an optical in-coupling element and an optical out-coupling element. The in-coupling element is designed to deflect light incident on the in-coupling element to the optical out-coupling element via the waveguide. Moreover, the out-coupling element is designed to interact with at least one controllable light source in such a way that, when the in-coupling element is illuminated with a controllable light signal from the at least one light source, an image is generated based at least in part on the light signal.
G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique
G03H 1/30 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique discrete holograms only
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/04 - Processes or apparatus for producing holograms
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
10.
WAVEFRONT MANIPULATOR WITH TOTAL REFLECTION AND REFLECTION HOLOGRAM
A wavefront manipulator which comprises a holographic assembly and an optical element is provided. The optical element includes at least one surface, which is totally reflective for an ascertained range of incidence angles, for emitting light waves onto the holographic assembly. The holographic assembly includes at least one reflection hologram for reflecting light waves emitted onto the holographic assembly via the optical element. The optical element includes a coupling device for coupling light waves into the wavefront manipulator. The coupling device includes at least one prism.
Different examples relate to techniques in order to actively or passively stabilize the temperature of a holographic optical element. To this end, heat-conducting elements, e.g. silver nanowires or carbon nanotubes, are provided.
The invention relates to an imaging system comprising a diffraction-based incoupling element, a diffraction-based outcoupling element, the IE being configured to deflect light incident on the IE from a field of view of the IE to the OE at least in part, the OE being configured to outcouple the deflected light at least in part and the deflected light from different regions of the field of view of the IE traversing different optical path lengths through the imaging system, and at least one non-rotationally symmetric refractive element that is configured to reduce a path length-dependent aberration.
The invention relates to techniques for producing an HOE by replication of a master HOE. In particular, techniques that allow variable surface shape during replication are described. A curved trajectory is used for exposure.
The invention relates to techniques for producing an HOE by replication of a master HOE. In particular, techniques that allow variable surface shape during replication are described. A curved trajectory is used for exposure.
G03F 7/00 - Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfacesMaterials therefor, e.g. comprising photoresistsApparatus specially adapted therefor
G03H 1/04 - Processes or apparatus for producing holograms
G03H 1/20 - Copying holograms by holographic means
An imaging system (10) for creating a colour image from a plurality of recordings comprises a first optical path (60) with a first field of vision. The first optical path (60) has a coupling-in element, EE, (20) and a coupling-out element, AE, (40), the coupling-in element, EE, (20) being designed to deflect light, incident on the coupling-in element, EE, (20) from the first field of vision at least partially to the coupling-out element, AE, (40). Furthermore, the coupling-out element, AE, (40) is designed to at least partially couple out the deflected light, and the coupling-in element, EE, (20) and/or the coupling-out element, AE, (40) is designed to at least partially spectrally separate the light from the first field of vision. The imaging system (10) further comprises a second optical path (70) having a second field of vision and comprising an inlet opening.
The invention relates to a method for the replication of a polychromatic hologram. The method involves providing a master assembly, comprising a first master hologram and a second master hologram which are arranged in a layer structure. The method also involves providing a replication assembly and aligning the first master hologram in relation to the replication assembly by translation and/or by rotation of the master assembly. The first master hologram is exposed by means of electromagnetic radiation of a first wavelength range in order to obtain a first replicated hologram in the replication assembly. In addition, the method involves aligning the second master hologram in relation to the replication assembly by translation and/or by rotation of the master assembly. The second master hologram is exposed by means of electromagnetic radiation of a second wavelength range in order to obtain a second replicated hologram in the replication assembly. The invention also relates to a replication assembly that can be produced by means of the method according to the invention. In addition, the invention relates to a master element and a device for carrying out the method according to the invention.
The invention relates to a method for replicating a polychromatic hologram combination, comprising the following steps: providing a first master hologram which is designed for a first wavelength range, and providing a second master hologram which is designed for a second wavelength range; providing a replication combination comprising a first light-sensitive layer on a replication substrate; exposing the first master hologram to obtain a first replicated hologram in the first light-sensitive layer by means of light of the first wavelength range; fixing the first replicated hologram in the first light-sensitive layer; applying a second light-sensitive layer onto the first light-sensitive layer; exposing the second master hologram to obtain a second replicated hologram in the second light-sensitive layer by means of light of a second wavelength range; fixing the second replicated hologram in the second light-sensitive layer. The invention also relates to a replication combination comprising at least a first and a second replicated hologram, which replication combination can be produced by means of the method according to the invention.
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/18 - Particular processing of hologram record carriers, e.g. for obtaining blazed holograms
G03H 1/20 - Copying holograms by holographic means
G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique
G03H 1/04 - Processes or apparatus for producing holograms
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
An imaging module of a projection device generates a multi-color image such that a first color sub-image with a first wavelength and a second color sub-image with a second wavelength are generated. Deflection efficiency curves for a specified angular range about a specified viewing angle are set such that a first efficiency ratio for the specified angular range is constant. The imaging module is actuated such that when the multi-color image is generated, a first brightness ratio of the brightness of the first color sub-image to the brightness of the second color sub-image is inversely proportional to the a efficiency ratio such that different deflection efficiency curves are compensated for and such that the viewer can perceive the multi-color image as a true-color virtual image at viewing angles from the specified angular range.
Methods and apparatuses for mounting a material (1) on a carrier (6) are provided. To this end, the material is arranged on a porous layer (2) of an air bearing arrangement (2, 3).
The invention relates to an optical device comprising a volume hologram (2) which diffracts the impinging illuminating light (L1, L2) in such a way that the illuminating light is given off in a predetermined range of angles (6) relative to the volume hologram (2), and comprising a visual protection filter (3), which is located on the volume hologram (2), for suppressing stray light, wherein the illuminating light diffracted by the volume hologram (2) passes through the visual protection filter (3).
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique
Described are techniques for combining a contactless finger scanner (90) with a holographic display device (70). A floating hologram (71) can be used to provide a positioning aid for a user of the finger scanner (90) such that the user can position one or more fingers or a hand in a measurement area (81).
G06V 10/88 - Image or video recognition using optical means, e.g. reference filters, holographic masks, frequency domain filters or spatial domain filters
G03H 1/00 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto
The invention relates to a lighting device (1), wherein the lighting device (1) comprises a light source (2) for generating an illumination light (7), and a hologram arrangement (4) which can be illuminated by the illumination light (7). The hologram arrangement (4) is designed to separate the illumination light (7) into a first portion (7.1) for generating a holographic image (12) and a second portion (7.2) for generating a lighting function (13).
G03H 1/00 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto
F21S 43/20 - Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
The invention relates to a lighting device (1), wherein the lighting device (1) comprises a light source (2) for generating an illumination light (5), a primary hologram (3) which can be illuminated by the illumination light (5) to generate a first lighting function (8), and a secondary hologram (4). The secondary hologram (4) is spaced apart from the primary hologram (3) such that it can be illuminated by a reflected portion (5.1) of the illumination light (5) which is reflected, during illumination of the primary hologram (3), by a Fresnel reflection at a boundary face (3.1) of the primary hologram (3).
F21S 43/20 - Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
Various examples relate to techniques for the synchronized controlling of a multicolor light source and a multipixel display device of a picture generating unit for a transparent screen unit, e.g. a head-up display system. This allows chromatic aberrations to be reduced, e.g. chromatic aberrations occurring due to the use of holographic optical elements.
An optical homogenization plate (1) is used to illuminate a multipixel display device (10), e.g. a liquid crystal screen. A speckle noise suppression unit (3, 300) is provided for reducing speckle noise before the light is coupled into the homogenization plate (1). Components of this type can be used in a picture generating device of an HUD system.
An imaging system comprises a waveguide and at least two diffraction-based coupling-in elements, the at least two coupling-in elements being configured to deflect at least some of the light incident on the coupling-in elements within the waveguide, the at least two coupling-in elements being tilted relative to one another at a tilt angle that is not equal to 0°.
The invention preferably relates to an image-generating unit with a light source for generating illumination radiation and a light-modulating pixel array for generating an image by pixel-wise modulation of the illumination radiation incident on the pixel array. The image-generating unit is characterized in that the illumination radiation, upon incidence on the light-modulating pixel array, has a lateral extent which is smaller than the pixel array and is guided over the pixel array by means of a scanning unit for generating an image. By a combination of the process of scanning the illumination radiation over the light-modulating pixel array, the speckle signatures of the scanning unit and of the pixel array are superimposed or combined to generate an image point. Advantageously, visible speckle patterns in the resulting image can thus be significantly reduced.
In a first aspect, the invention relates to a holographic display device for the switchable display of images, wherein a light source, a light guide and at least two holographic diffraction gratings are configured for illumination of the at least two holographic diffraction gratings by light from the light source coupled into the light guide. Each holographic diffraction grating generates an image. Furthermore, a controllable light gate is allocated to each holographic diffraction grating. The light gate is configured to regulate the brightness of the generated image. In a further aspect, the invention relates to an operating device comprising a holographic display device as described and at least one operating element having at least one sensor. The sensor can detect an interaction with the operating element and output a detection signal. Furthermore, a control device is comprised which controls the light gate depending on the detection signal.
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
G06F 1/16 - Constructional details or arrangements
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
A lightguide structure for illumination, detection and/or holographic representation includes at least one planar lightguide for guiding electromagnetic radiation of at least a first spectrum, at least one illumination arrangement located on the first side face of the lightguide, and at least one holographic outcoupling structure for coupling out electromagnetic radiation guided in the lightguide structure. The light radiated in by the illumination arrangement can have a large angular range, the holographic outcoupling structure having a small angular range. Also provided is a production method for such a lightguide structure and to an operating element comprising a lightguide structure.
A Wavefront manipulator for arrangement in the beam path of a head-up display includes a holographic arrangement as sole aberration correction element. A wavefront manipulator can include a holographic arrangement for arrangement in the beam path of a head-up display between a picture generating unit and a projection surface. The holographic arrangement can be configured for arrangement as the sole aberration correction element between the picture generating unit and the projection surface.
A system for a functionalized pane in a door, through which person-based and/or object-based authorization verification can be carried out is provided. The person-based verification can include a holography-based, stereoscopic holocamera that can be integrated into the pane. In addition, a holographic display that can also be integrated into the pane can be included. Corresponding methods can be used to carry out the authorization verification under the control of the control device and to control a locking mechanism of a door and a holographic display.
G07C 9/00 - Individual registration on entry or exit
B60R 25/20 - Means to switch the anti-theft system on or off
B60R 25/31 - Detection related to theft or to other events relevant to anti-theft systems of human presence inside or outside the vehicle
E05F 15/73 - Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects
E05F 15/76 - Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects responsive to devices carried by persons or objects, e.g. magnets or reflectors
G03H 1/00 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto
G03H 1/04 - Processes or apparatus for producing holograms
G06V 10/14 - Optical characteristics of the device performing the acquisition or on the illumination arrangements
G06V 20/52 - Surveillance or monitoring of activities, e.g. for recognising suspicious objects
G06V 40/10 - Human or animal bodies, e.g. vehicle occupants or pedestriansBody parts, e.g. hands
G06V 40/60 - Static or dynamic means for assisting the user to position a body part for biometric acquisition
The invention relates to a lighting device for a vehicle having at least one lighting channel for generating a holographic light function assigned to this lighting channel by lighting a holographic structure of the lighting channel. Each channel includes a lighting assembly and a coupling-in surface of a light guide body disposed along a main beam direction of the lighting assembly. The lighting device also includes a holographic structure disposed on the coupling-out surface of the light guide body. The coupling-out surface is disposed in a beam path of the coupled-in light beams, so that lighting of the coupling-out surface takes place at an angle which is greater than a critical angle of the total reflection. The invention also relates to a rear light for a vehicle and to a vehicle.
B60Q 1/30 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating rear of vehicle, e.g. by means of reflecting surfaces
B60Q 3/64 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for a single lighting device
B60Q 3/70 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by the purpose
A projection unit images a multi-color image having a first and a second wavelength into an exit pupil such that an observer can perceive said image as a virtual image when an eye of the observer is positioned in the exit pupil and the observer views the projection unit at a predefined angle of observation. Each volume grating of the projection unit has a deflection efficiency curve dependent on the angle of observation with a maximal for the predefined angle of observation. The deflection efficiency curves are set equal for a predefined angle range around the predefined angle of observation by virtue of the fact that, for each of the volume gratings applied by exposure, the number of interference maxima applied by exposure is the same and the refractive index modulation for the corresponding wavelength, which refractive index modulation is applied by exposure, is the same.
An optical arrangement (807) for a head-up display (810) comprises one or more holographic optical elements (803) and a filter arrangement (811). The filter arrangement (811) comprises a micro-louvered grating and is designed for angle-selective filtering of light.
A door frame for a vehicle includes a holographic door sill panel in a lower door frame portion, a suitable lighting assembly in a lateral door frame portion, a holographic door sill panel suitable for such a door frame, as well as a system that is composed of the holographic door sill panel and the lighting assembly and suitable for such a door frame.
B60Q 1/00 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
B60Q 1/32 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating vehicle sides
B60Q 3/60 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by optical aspects
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
41.
MEASUREMENT METHOD FOR DETERMINING A REPLICATION PARAMETER, AND REPLICATION METHOD USING THE DETERMINED REPLICATION PARAMETER
The invention relates to a measurement method for determining at least one replication parameter for a replication method using at least one master element. The measurement method involves providing: a master element comprising a reflection hologram; a light source; a detector; and a diffuser. The diffuser is positioned between the master element and the detector. The measurement method also involves irradiating the master element with light by means of the light source, sensing an intensity distribution of the light exiting the diffuser by means of the detector, and determining at least one replication parameter on the basis of the sensed intensity distribution.
A wave front manipulator can include an optical axis and at least two diffractive optical components, which are arranged successively along the optical axis. The diffractive optical components each can include a diffractive structure having a number of diffractive holographic structural elements. The wave front manipulator is designed to vary a wave front between at least two different states via the diffractive structures of the at least two diffractive optical components.
The invention relates to a device for producing a polychromatic holographic image. To this end, the device comprises a light guide, which has a first in-coupling region and a second in-coupling region. Furthermore, a first light source and a second light source are provided, wherein the first light source irradiates light of a first wavelength range into the first in-coupling region and the second light source irradiates light of a second wavelength range into the second in-coupling region. The device has a holographic structure which, when illuminated with light from the first light source and the second light source, generates a polychromatic holographic image. The holographic structure is characterized in that it is subdivided into a first region and a second region, wherein the first region is wavelength-selective for light of the first wavelength range and the second region is wavelength-selective for light of the second wavelength range. The light guide is moreover configured to guide the light from the first light source onto the first region and the light from the second light source onto the second region. In further aspects, the invention relates to a light guide for the device according to the invention, a vehicle seat comprising a seat trim panel, into which the device according to the invention is incorporated, and a vehicle comprising such a vehicle seat.
G03H 1/00 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique
G03H 1/30 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique discrete holograms only
B60K 35/00 - Instruments specially adapted for vehiclesArrangement of instruments in or on vehicles
The invention relates to a composite glass pane for a vehicle, the composite glass pane (1) having an inner pane (2) and an outer pane (3) which is connected to the inner pane (2) by an adhesive layer (4), the inner pane (2) having a first side (5) facing away from the outer pane (3), a second side (6) facing the outer pane (3), a coupling-in region (15) and at least one coupling-out region (17, 18, 19) spaced apart therefrom, wherein radiation (22) coming from a light source (20) can be coupled into the inner pane (2) such that the coupled-in radiation (23) in the inner pane (2) is guided by reflections to at least one coupling-out region (17, 18, 19), wherein the at least one coupling-out region (17, 18, 19) deflects at least some of the coupled-in radiation (22) such that the deflected part of the coupled-in radiation (23) exits the inner pane (2) through the first side (5) of the inner pane (2) as diffuse or directed radiation.
B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
B60Q 3/62 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
An optical system comprises an imaging holographic optical element, which produces a floating hologram. An upstream light-forming holographic optical element causes spectral filtering of the light.
An illumination module for illuminating a surface has a beam source emitting illumination radiation, an extensive deflection hologram arranged at a distance from the surface to be illuminated, and a collimator optical unit at which the illumination radiation is directed, which collimates the illumination radiation and which emits the latter as collimated radiation incident on the deflection hologram, wherein the deflection hologram is designed such that it deflects the incident collimated radiation in the direction toward the surface to be illuminated and at the same time acts as a diffuser.
An optical system comprises a plurality of optical channels. A control unit can switch light sources of the optical channels separately on and off. In this way, different image motifs of a hologram can be illuminated by a number of different illumination sources of at least one imaging holographic optical element.
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/04 - Processes or apparatus for producing holograms
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
A holographic projection device includes a first volume hologram that deflects light from a useful light source to generate an image. Light which does not originate from the useful light source and strikes the first volume hologram at a predetermined solid angle deflects such that it is perceptible as unwanted interfering light. The projection device also includes a holographic filter which deflects the light which does not originate from the useful light source and would strike the first volume hologram at the predetermined solid angle, before the light strikes the first volume hologram, such that it is not perceptible as unwanted interfering light, and/or deflects the light which does not originate from the useful light source and strikes the first volume hologram at the predetermined solid angle, after the deflection by the first volume hologram, such that it is not perceptible as unwanted interfering light.
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
51.
WAVEFRONT MANIPULATOR FOR A HEAD-UP DISPLAY, OPTICAL ARRANGEMENT, AND HEAD-UP DISPLAY
A wavefront manipulator can be arranged in the beam path of a head-up display between a projection lens and a curved projection surface having a number of fixed characteristics. The wavefront manipulator can include a plurality of optical elements with different representational functions, each representational function at least partly correcting an aberration caused by at least one fixed characteristic of the curved projection surface.
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
52.
DEVICE FOR MEASURING A PROPAGATION TIME OF A MEASUREMENT LIGHT BEAM, USER TERMINAL, DETECTION AND LIGHTING APPARATUS, METHOD FOR MEASURING A PROPAGATION TIME OF A MEASUREMENT LIGHT BEAM, COMPUTER PROGRAM AND/OR COMPUTER-READABLE MEDIUM AND DATA PROCESSING DEVICE
The invention relates to a device (10) for measuring a propagation time (92) of a measurement light beam (80), comprising a measurement light source (20) for emitting the measurement light beam (80), a light sensor (30) for detecting the measurement light beam (80), a waveguide (50) and a data processing device (90), wherein the waveguide (50) is designed such that the measurement light beam (80) emitted from the measurement light source (20) is guided to an object (15) in an object region (16) of the device (10) and the measurement light beam (85) reflected from the object (15) is guided to the light sensor (30) at least partially through the waveguide (50), wherein the waveguide (50) has a measurement diffraction structure (51, 52) for deflecting the measurement light beam (81, 86) depending on the wavelength and the measurement light beam (86) covers a wavelength-dependent path length (91) in the waveguide (50), wherein the data processing device (90) is configured to determine, during measurement of the propagation time (92), an optical path length contribution (93) and/or a propagation time contribution (94) for the measurement light beam (80) detected by the light sensor (30) taking into consideration the wavelength-dependent path length (91) of the measurement light beam (86) within the waveguide (50).
An optical assembly for a head-up display on a projection surface includes an imaging device, which includes at least one imaging unit, and at least one wavefront manipulator arranged in a beam path between the imaging device and the projection surface. The optical assembly is configured to generate virtual depictions in at least two different image planes, wherein the imaging device has at least a first region and a second region, wherein the imaging device and the wavefront manipulator are configured, in combination, to generate virtual depictions in a first image plane out of images generated in the first region of the imaging device and to generate virtual depictions in a second image plane out of images generated in the second region of the imaging device.
The invention relates to a scattered-light-reduced HUD with a holographic component for beam adaptation. At least one band-pass filter is arranged in a beam path between the holographic component and a provided eyebox of the HUD. The band-pass filter is permeable for visible light in at least one first spectral range, which comprises at least one spectral range refracted by the holographic component for beam adaptation. The invention also relates to a corresponding holographic component for a scattered-light-reduced HUD. The invention also relates to a manufacturing method for the holographic component and to a holographic component produced by said method.
The invention relates to a method for reducing reflections in a head-up display (HUD) having a defined eyebox, comprising the steps of: providing a HUD; determining at least one range of angles of ambient light radiating onto the HUD, within which range critical deflection from the HUD into the eyebox can take place; and finally applying at least one coating to the HUD, which is designed to minimise the deflection of radiating ambient light from the determined range of angles. The invention also relates to a HUD in which reflections are correspondingly reduced. (Fig. 3)
G02B 1/118 - Anti-reflection coatings having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
56.
ACETALS OF TRICYCLODECANE ALCOHOLS AS IMMERSION LIQUID MEDIA
An immersion liquid, especially for microscopy, contains one or more acetals of tricyclodecane alcohols as its main constituent, wherein a tricyclodecane alcohol is a compound of which the structure has the base skeleton of tricyclo[5.2.1.02,6]decane and at least one OH group, and wherein all OH groups of the tricyclodecane alcohol have been acetalized in the acetal. Also described are 3(4),8(9)-bis(tetrahydropyran-2-yloxymethyl)tricyclo[5.2.1.02,6]decane or 8-tetrahydropyran-2-yloxymethyltricyclo[5.2.1.02,6]decane and the preparation thereof, and the use of acetals of tricyclodecane alcohols as the main constituent of an immersion liquid. A process for preparing an acetal of a tricyclodecane alcohol involves reacting a tricyclodecane alcohol with an acetalizing agent in the presence of an acid.
A holographic lighting apparatus includes at least two channels for the respective associated lighting functions. Each channel includes an edge-lit arrangement with an incoupling surface for coupling light from a light source into the arrangement, and an outcoupling surface; and a light source. The edge-lit arrangements of the channels are all included in a monolithic component having a common outcoupling surface, and each channel is arranged so as to be rotated about a surface normal of the outcoupling surface along an azimuthal arrangement angle. The component has at least one holographic structure for generating the lighting function of the relevant channel when said structure is illuminated by the light source of the channel. Also provided are a vehicle including a corresponding lighting apparatus, the use of the lighting apparatus as a display in a vehicle, and the lighting apparatus as an LED collimator.
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/00 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique
The invention relates to a functionalised waveguide, wherein the waveguide (1) has a transparent main body (6) with a front side (7) and a rear side (8), wherein the main body (6) has a coupling-in region (4) and a coupling-out region (5) spaced apart therefrom in a first direction (5), wherein the coupling-in region (4) comprises a diffractive structure (12) which deflects at least a portion of the radiation (L1), which comes from an object (9) and strikes said structure, in such a manner that the deflected portion is propagated as coupled-in radiation in the main body (6) through reflections up to the coupling-out region (5) and strikes the coupling-out region (5), wherein on the front side (7) and/or rear side (8) an anti-reflection layer (13, 14) is formed which transmits interference radiation, which would strike the diffractive structure (12) only after a reflection on the front side (7) and/or rear side (8), to the front side (7) and/or rear side (8) and thus suppresses the reflection on the front side (7) and/or rear side (8).
The invention relates to techniques for producing a holographic optical element, HOE, by replication of a master HOE. More particularly, the invention relates to techniques for flexibly adjusting the diffraction efficiency of the HOE. An adjustable settable optical element (54) can be used to change the intensity and/or polarisation of light during an illumination process.
The invention relates to techniques for producing a holographic optical element (HOE) by replication of a master HOE. In particular, the invention relates to techniques for flexibly adjusting the diffraction efficiency of the HOE. An adjustable optical element (54) can be used to modify the intensity and/or the polarisation of light during the exposure process.
The invention relates to a device for continuously replicating a hologram comprising a coating module which is designed to coat a liquid photopolymer onto a first carrier film, a lamination module which is designed to apply a second carrier film to the first carrier film coated with the photopolymer, in order to obtain a photopolymer composite including a liquid photopolymer layer between two carrier films, an exposure module, wherein the exposure module has a light source and a master element with a master hologram to be replicated, wherein the master element is axially rotatably mounted and the exposure module is designed to bring the photopolymer composite in optical contact with the master element, while the light source exposes the master hologram in order to obtain a replicated hologram in a region of the photopolymer composite, and a fixing module which is designed to cure the replicated hologram in the photopolymer composite.
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/20 - Copying holograms by holographic means
B32B 37/00 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
B32B 37/15 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
B32B 37/22 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of both discrete and continuous layers
G11B 7/245 - Record carriers characterised by the selection of the material of recording layers comprising organic materials only containing a polymeric component
B05D 3/00 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
B05D 7/24 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
G03H 1/18 - Particular processing of hologram record carriers, e.g. for obtaining blazed holograms
62.
REPLICATING METHOD FOR COPYING HOLOGRAMS INTO LIQUID PHOTOPOLYMERS
The invention relates to, preferably, a method for continuously replicating a hologram preferably by means of a device comprising a coating module, a lamination module, an exposure module and a fixing module, wherein the method comprises the following steps: coating a first carrier film with a liquid photopolymer using a coating module; applying a second carrier film to the coated first carrier film using a lamination module, in order to obtain a photopolymer composite including a liquid photopolymer layer between two carrier films; bringing a region of the photopolymer composite in contact with an axially rotatable master element including a master hologram to be replicated in an exposure module and exposing the region of the photopolymer composite by means of a light source, such that the master hologram is replicated on the photopolymer composite; and curing a replica hologram contained in the liquid photopolymer in a fixing module.
G03H 1/20 - Copying holograms by holographic means
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
B05D 7/24 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
B32B 37/00 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
B32B 37/15 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
B32B 37/22 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of both discrete and continuous layers
The invention relates to a method comprising: Providing a multiplicity of master elements comprising a substrate body and at least one master hologram, selecting a sequence of master elements from the multiplicity of master elements in dependence on the plurality of holograms to be replicated and arranging the sequence of master elements on a first carrier means such that upper surfaces of the master elements are aligned in a horizontal plane, detachably laminating a light-sensitive composite sheet onto the aligned surfaces of the master elements, exposing the master elements in order to replicate the master holograms in the light-sensitive composite sheet, and detaching the exposed composite sheet from the master elements, wherein the master elements are detachably incorporated in the first carrier means such that a sequence and/or composition of the master elements for the replication of the plurality of holograms is variable and wherein the master elements are incorporated in the first carrier means in such a way that two or more surfaces of the master elements are optically accessible for the purpose of exposure.
G03H 1/20 - Copying holograms by holographic means
G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/04 - Processes or apparatus for producing holograms
64.
DEVICE FOR REPLICATING A PLURALITY OF HOLOGRAMS ACCORDING TO A TYPE-CASE PRINCIPLE
The invention relates to a device for replicating a plurality of holograms. The device comprises a first carrier means for arranging a sequence of master elements from multiple master elements according to a plurality of holograms to be replicated, so that upper faces of the master elements are aligned in a horizontal plane, and a lamination module for detachably laminating a light-sensitive composite web onto the aligned upper faces of the master elements. The device also comprises an exposure module for exposing the master elements in order to replicate the master holograms into the light-sensitive composite web, and a detachment module for detaching the exposed composite web from the master elements. The master elements are detachably inserted in the first carrier means, so that a sequence and/or composition of the master elements can be varied for the replication of the plurality of holograms. In addition, the master elements are inserted in the first carrier means in such a way that two or more faces of the master elements are optically accessible for the purpose of exposure.
G03H 1/20 - Copying holograms by holographic means
G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/04 - Processes or apparatus for producing holograms
65.
LAB-ON-A-CHIP SYSTEM WITH FUNCTIONALIZED WAVEGUIDE
A lab-on-a-chip system (100) comprises an optical detection waveguide (122) that has an at least partially periodic structure (123, 501, 502, 503, 504) that is configured to couple light (152) from surroundings of the optical detection waveguide (122) into the optical detection waveguide (122). The lab-on-a-chip system (100) furthermore also comprises a microfluidic network (212), wherein the microfluidic network (212) has multiple lines and at least one reaction chamber (211, 211-1, 211-2, 211-3).
A method of producing an optical element for a lithography apparatus, comprising the steps of: a) detecting a height profile of a surface of a crystal substrate of the optical element, and b) ascertaining, using the height profile detected, an installed orientation (δ2, δ4, δ6) of the optical element in an optical system of the lithography apparatus in relation to a stress-induced birefringence on incidence of polarized radiation, where the installed orientation (δ2, δ4, δ6) is an orientation in relation to a rotation of the optical element about a center axis of the optical element that runs through the surface.
B24B 13/06 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes
G03F 7/00 - Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfacesMaterials therefor, e.g. comprising photoresistsApparatus specially adapted therefor
In one aspect, the invention relates to a replication method for producing a hologram copy by simultaneous exposure of a master hologram and a copy carrier comprising a photosensitive material. The contact body is brought into contact with the copy carrier during the exposure, the contact body and the copy carrier directly touching one another in a part through which exposure light is radiated during the exposure. The contact body is transparent to the exposure light, and the refractive index of the contact body is matched to the refractive index of the copy carrier. In a further aspect, the invention relates to a device for realizing the replication method.
G03H 1/20 - Copying holograms by holographic means
G03H 1/04 - Processes or apparatus for producing holograms
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
68.
WAVEFRONT MANIPULATOR FOR HEAD-UP DISPLAY WITH HOLOGRAPHIC ELEMENT, OPTICAL ARRANGEMENT AND HEAD-UP DISPLAY
A wavefront manipulator for an arrangement in the beam path of a head-up display between a picture generating unit and a projection surface is provided. The wavefront manipulator includes a holographic arrangement including at least two holographic elements. The at least two holographic elements are arranged directly behind one another in the beam path and are configured to be reflective for at least one defined wavelength and a defined angle of incidence range.
The invention relates in a first aspect to a master plate for industrial hologram replication, comprising a flat and planar composite pane having a thick glass pane as a carrier for minimizing the deflection of the master plate and a thin glass pane for protecting a master hologram layer from mechanical influences, and at least one master hologram layer extending between the glass panes which has the optical function of a hologram, wherein the thick glass pane has a thickness perpendicular to the planar extent of greater than 2 millimeters, wherein the thin glass pane has a thickness perpendicular to the planar extent of between 2 millimeters and 0.1 millimeters, and wherein an unevenness of the composite pane is preferably less than 0.03% of a length of a direction of extent of the surface of the planar composite pane. In a second aspect, the invention relates to a method for producing a master plate.
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/20 - Copying holograms by holographic means
B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
G11B 7/24044 - Recording layers for storing optical interference patterns, e.g. hologramsRecording layers for storing data in three dimensions, e.g. volume storage
G11B 11/105 - Recording on, or reproducing from, the same record carrier wherein for these two operations the methods or means are covered by different main groups of groups or by different subgroups of group Record carriers therefor using recording by magnetisation or demagnetisation using a beam of light or a magnetic field for recording and a beam of light for reproducing, e.g. light-induced thermomagnetic recording or Kerr effect reproducing
70.
METHOD FOR THE REPLICATION OF A HOLOGRAM BY MEANS OF AN OPTICAL ADHESIVE FILM
The invention relates to a method for the replication of a hologram into a light-sensitive composite web. The method according to the invention preferably comprises providing a master element comprising a substrate body and at least one master hologram, applying a light-sensitive composite web to a surface of the master element, exposing the master element in order to replicate the at least one master hologram into the light-sensitive composite web, and detaching the exposed composite web from the master element. The method furthermore comprises temporarily applying an optical adhesive film between the light-sensitive composite web and the surface of the master element. The optical adhesive film mediates an optical contact between the master element and the light-sensitive composite web during the exposure. In a further aspect, the invention relates to a method for the replication of a hologram into a light-sensitive composite web using a coupling-in element, wherein an optical adhesive film is introduced between composite web and coupling-in element.
G03H 1/20 - Copying holograms by holographic means
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/04 - Processes or apparatus for producing holograms
C09J 7/00 - Adhesives in the form of films or foils
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
19 - Non-metallic building materials
Goods & Services
optical apparatus and instruments; Waveguides for guiding light waves, namely, transparent waveguides, transparent holographic waveguides, and transparent holographic waveguides made of glass, a glass-polymer sandwich or a polymer-polymer sandwich, said waveguides comprising at least one holographic optical element; waveguide assemblies comprising a transparent waveguide for guiding light waves and a light-sensitive sensor, light emitting diodes (LEDs) as a light source and/or a non-medical imaging device for the recording, transmission and reproduction of light distributions or images; waveguide assemblies comprising a transparent holographic waveguide for guiding light waves and a light-sensitive sensor, light emitting diodes (LEDs) as a light source and/or a non-medical imaging device for the recording, transmission and reproduction of light distributions or images; smart device displays featuring a transparent waveguide, namely, smart glasses displays, head-up displays for automobile drivers and aircraft pilots, head-mounted displays; smart device displays comprising a transparent holographic waveguide for guiding light waves, namely, smart glasses displays, head-up displays for automobile drivers and aircraft pilots, head-mounted displays; smart device display devices comprising a transparent waveguide for guiding light waves and a light-sensitive sensor, a light source and/or a non-medical imaging device for the recording, transmission and reproduction of light distributions or images, namely, smart glasses displays, head-up displays for automobile drivers and aircraft pilots, head-mounted displays; smart device display devices featuring a transparent holographic waveguide and a light-sensitive sensor, a light source and/or an imaging device, namely, smart glasses displays, head-up displays for automobile drivers and aircraft pilots and head-mounted displays; head-up display devices for use in vehicles or general aviation comprising a transparent holographic waveguide for guiding light waves and a light-sensitive sensor, a light source and/or a non-medical imaging device for the recording, transmission and reproduction of light distributions or images; head mounted display devices, namely, smart glasses featuring a transparent holographic waveguide and a light-sensitive sensor, a light source and/or an imaging device; spectacle lenses featuring a transparent holographic waveguide; data glass devices, namely, smart glasses featuring a transparent holographic waveguide and a light-sensitive sensor, a light source and/or an imaging device; holographic optical elements in the nature of optical devices, namely, optical lenses; reflective holographic optical elements in the nature of optical devices, namely, optical lenses; transmissive holographic optical elements in the nature of optical devices, namely, optical lenses; all of the aforesaid for automotive or aircraft parts provided in business to business contexts only; none of the aforesaid in relation to television entertainment, on demand television services, streaming services, telecommunications, broadcasting, broadband, fixed line and mobile telephony services, or health, fitnes or exercise services. Land vehicle parts, namely, windshields featuring a transparent holographic waveguide. Window panes featuring a transparent holographic waveguide; window pane assemblies featuring a transparent holographic waveguide and a light-sensitive sensor, a light source and/or an imaging device.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
12 - Land, air and water vehicles; parts of land vehicles
19 - Non-metallic building materials
Goods & Services
Optical apparatus and instruments, namely, apparatus and instruments to manufacture optical waveguides; Waveguides for high efficiency beam delivery for guiding light waves, namely, transparent waveguides, and transparent holographic waveguides, said waveguides comprising at least one holographic optical element; waveguide assemblies comprising a transparent waveguide for high efficiency beam delivery for guiding light waves and a light-sensitive sensor, light emitting diodes (LEDs) as a light source or a non-medical imaging device for the recording, transmission and reproduction of light distributions or images; waveguide assemblies comprising a transparent holographic waveguide for high efficiency beam delivery for guiding light waves and a light-sensitive sensor, light emitting diodes (LEDs) as a light source or a non-medical imaging device for the recording, transmission and reproduction of light distributions or images; smart device displays featuring a transparent waveguide for high efficiency beam delivery, namely, smartglasses displays, head-up displays for automobile drivers and aircraft pilots, television screen displays, computer screen displays, smartphone screen displays, and head-mounted displays; smart device displays comprising a transparent holographic waveguide for high efficiency beam delivery for guiding light waves, namely, smart glasses displays, head-up displays for automobile drivers and aircraft pilots, television screen displays, computer screen displays, smartphone screen displays, and head-mounted displays; smart device display devices comprising a transparent waveguide for high efficiency beam delivery for guiding light waves and a light-sensitive sensor, a light source or a non-medical imaging device for the recording, transmission and reproduction of light distributions or images, namely, smart glasses displays, head-up displays for automobile drivers and aircraft pilots, television screen displays, computer screen displays, smartphone screen displays, and head-mounted displays; smart device display devices featuring a transparent holographic waveguide for high efficiency beam delivery and a light-sensitive sensor, a light source or an imaging device, namely, smart glasses displays, head-up displays for automobile drivers and aircraft pilots, television screen displays, computer screen displays, screen displays, and head-mounted displays; head-up display devices for use in vehicles or general aviation comprising a transparent holographic waveguide for high efficiency beam delivery for guiding light waves and a light-sensitive sensor, a light source or a non-medical imaging device for the recording, transmission and reproduction of light distributions or images; head mounted display devices, namely, smart glasses featuring a transparent holographic waveguide for high efficiency beam delivery and a light-sensitive sensor, a light source or an imaging device; spectacle lenses featuring a transparent holographic waveguide for high efficiency beam delivery; data glass devices, namely, smart glasses featuring a transparent holographic waveguide for high efficiency beam delivery and a light-sensitive sensor, a light source or an imaging device; holographic optical elements in the nature of optical devices, namely, optical lenses; reflective holographic optical elements in the nature of optical devices, namely, optical lenses; transmissive holographic optical elements in the nature of optical devices, namely, optical lenses Lights for use in illuminating displays featuring a transparent waveguide, namely, smart glasses displays, head-up, television screen displays, computer screen displays, smartphone screen displays, and head-mounted displays; Lights for use in illuminating displays comprising a transparent or holographic waveguide for guiding light waves, namely, smart glasses displays, head-up displays, television screen displays, computer screen displays, smartphone screen displays, and head-mounted displays; Lights for use in illuminating device display devices featuring a transparent holographic waveguide and a light-sensitive sensor, a light source and an imaging device, namely, smart glasses displays, head-up displays, television screen displays, computer screen displays, screen displays, and head-mounted displays; Lights for use in illuminating head-up display devices comprising a transparent holographic waveguide for guiding light waves and a light-sensitive sensor, a light source or a medical imaging device for the recording, transmission and reproduction of light distributions or images; Lights for use in illuminating head mounted display devices, namely, smart glasses featuring a transparent holographic waveguide and a light-sensitive sensor, a light source or an imaging device; spectacle lenses featuring a transparent holographic waveguide; Lights for use in illuminating data glass devices, namely, smart glasses featuring a transparent holographic waveguide and a light-sensitive sensor, a light source or an imaging device; Lights for use in illuminating holographic optical elements in the nature of optical devices, namely, optical lenses; Lights for use in illuminating reflective holographic optical elements in the nature of optical devices, namely, optical lenses; Lights for use in illuminating transmissive holographic optical elements in the nature of optical devices, namely, optical lenses Land vehicle parts, namely, windshields featuring a transparent holographic waveguide Window panes featuring a transparent holographic waveguide; window panes featuring a transparent holographic waveguide and a light-sensitive sensor, a light source or an imaging device
The invention relates to a transparent display comprising a holographic diffuser that extends substantially in a two-dimensional diffuser plane and comprising a projector, the projector having an image generation unit, in particular a digital micromirror device (DMD), and a reflection unit, wherein the reflection unit is configured to reflect, in the direction of the holographic diffuser, images generated by the image generation unit, and the image generation unit is arranged on a side of the diffuser plane lying opposite the reflection unit. The invention also relates to a method for producing a holographic diffuser.
G03B 21/00 - Projectors or projection-type viewersAccessories therefor
B60K 35/00 - Instruments specially adapted for vehiclesArrangement of instruments in or on vehicles
74.
HOLOGRAPHIC OPTICAL MODULE, HOLOGRAPHIC DISPLAY DEVICE COMPRISING SUCH A HOLOGRAPHIC OPTICAL MODULE, AND METHOD FOR PRODUCING SUCH A HOLOGRAPHIC OPTICAL MODULE
The invention relates to a holographic optical module comprising a base body (4), which has a first surface (5), and a plurality of surface elements (10, 10'), each of which has a holographic structure, wherein the plurality of surface elements (10, 10') are arranged on the first surface (5) of the base body (4) such that the surface elements form a continuous surface (6) that provides a specified optical function.
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/20 - Copying holograms by holographic means
G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique
G03H 1/30 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique discrete holograms only
The invention relates to an optical waveguide (1) for arranging in the beam path of an optical assembly (41, 45, 47), wherein the optical waveguide (1) comprises a substrate (2) with at least two opposing boundary surfaces (9) for guiding optical waves (4) by means of total internal reflection. The at least two boundary surfaces (9) each have an outer layer (40) with a refractive index progression whereby, starting from the respective boundary surface (9), the effective refractive index of the outer layer (40) reduces over a determined course outwards at an increasing distance from the boundary surface (9).
G02B 1/118 - Anti-reflection coatings having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
A system (100, 300) for adapting a diameter of a photon beam (S', S") comprises: a first element (1) which has a curved surface and a first and a second focus (F1, F2). The system can be configured such that the photon beam is focused on the first focus (F1), with the result that the photon beam is focused on the second focus (F2) following a reflection at the surface of the first element (1).
The invention relates to a transparent display (600), comprising a holographic diffuser (611) extending substantially in a two-dimensional diffuser plane, and comprising an enlarging reflective element (612), wherein the holographic diffuser (611) and the reflective element (612) are part of a one-piece optical unit (610), and wherein image rays, reflected by the reflective element (612), are guided inside the optical unit (610) to the holographic diffuser (611).
METHOD FOR PRODUCING A LAMINATING COMPONENT OR A HOLOGRAM COMPONENT IN ORDER TO PRODUCE A COMPOSITE GLASS, AND CORRESPONDING LAMINATING COMPONENTS, HOLOGRAM COMPONENTS, AND COMPOSITE GLASSES
The invention relates to a method for producing a laminating component or a hologram component. A holographic material, such as a holographic film, is connected either to a laminating agent in order to form a laminating component or to a transparent reinforcing material in order to form a hologram component In order to produce a composite glass, the laminating component or the hologram component can then be laminated between two glass panes, which can be curved in particular. By virtue of the laminating agent of the laminating component or the reinforcing material of the hologram component, damage to the hologram imprinted in the holographic material can be prevented or reduced.
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
An illumination apparatus for a motor vehicle comprises: a light source, an optical waveguide with an incident surface and a reflective region; and a hologram arranged on or in the optical waveguide. The illumination apparatus is configured such that light emitted by the light source enters the incident surface of the optical waveguide in the direction of the reflective region, is reflected by the reflective region inside the optical waveguide in the direction of the hologram and interacts with the hologram. The average distance between the light source and the incident surface is at least half as great as the average distance between the reflective region and the hologram.
F21S 43/50 - Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
F21S 41/50 - Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
F21S 43/241 - Light guides characterised by the shape of the light guide of complex shape
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
The invention relates to a display device for a vehicle, which is designed to be integrated into the interior of the vehicle, comprising a plurality of light sources (1), a plurality of light guides (2), each of which has an entry surface (6) and a reflective region (7), and a plurality of holograms (8), wherein: at least one of the holograms (8) is arranged on or in each of the light guides (2); at least one of the light sources (1) in each case is assigned to one of the light guides (2); and the display device is designed such that light (3) emitted from the light sources (1) enters the entry surface (6) of the assigned light guide (2) in the direction of the reflective region (7), is reflected by the reflective region (7) in the interior of the light guide (2) in the direction of the hologram (8), and interacts with the hologram (8).
G02B 6/00 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings
G02B 30/50 - Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
In a base element of a waveguide for a detector system at least a portion of radiation passing via the front side and incident on the diffractive element in a selection region is deflected via the diffractive element such that the deflected portion is propagated as coupled-in radiation in the base element by reflection to the out-coupling region and is incident on the associated out-coupling section of the out-coupling region. The out-coupling region couples at least a portion of the radiation out of the base element such that it is incident on the associated sensor section of the sensor unit, which continuously measures the intensity of the incident radiation and supplies the control unit. The control unit determines the distance of the object from the front side of the base element according to the measured intensity.
In a base element of a waveguide for a detector system at least one portion of radiation passing via the front side and impinging on a diffractive element in the display region is deflected via the diffractive element according to the selection region. The deflected portion is propagated as coupled-in radiation via reflection to an out-coupling region and impinges on the associated out-coupling section of the out-coupling region. The portion of radiation coupled out by an out-coupling section impinges on an associated sensor section of the sensor unit, which continuously measures the intensity of the impinging radiation and supplies the control unit, wherein, according to a change of intensity, which is dependent on positioning an object in front of the front side of the base element and in front of a selection region of the display region, the control unit determines whether the one selection region has been selected.
The invention relates to a wavefront manipulator (7) for arrangement in the beam path (8) of a head-up display (10) between an imaging unit (1) and a projection surface (4). The wavefront manipulator (7) comprises a holographic assembly (3) which has at least two holographic elements (11, 12), the at least two holographic elements (11, 12) being arranged directly behind one another in the beam path (8), at least in sections, and being designed to be reflective for at least one fixed wavelength and a fixed irradiation angle range, wherein a first holographic element comprises at least one hologram which is assigned to a hologram of a second holographic element for reflection purposes. The wavefront manipulator (7) is designed for at least one fixed object plane to generate an image plane of a virtual image (6) which is tilted about a fixed tilt angle θ with respect to a plane (14) arranged perpendicular to the optical axis (13) in the region of the image plane of a virtual image (6), wherein the holographic arrangement (3) is designed for at least partial correction of at least one imaging error of a virtual image (6) generated in the tilted image plane.
A photometric apparatus (91) comprises an optical block (170) having a first coupling-in section (171) with a coupling-in face (175) which is arranged to couple light (190) into the optical block (170) and a waveguide section (172) extending away from the coupling-in section (171) and designed to guide the light (190) by multiple reflection (50) between an upper face (271) and a lower face (272) of the waveguide section (172). The optical block (170) also comprises a holographically optical element that is formed in the waveguide section (172) and is designed to reconstruct a hologram by means of the light.
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
B60Q 1/26 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
B60Q 3/54 - Lighting devices embedded in interior trim, e.g. in roof liners
B60Q 3/64 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for a single lighting device
The invention relates to a wavefront manipulator (1) which comprises a holographic assembly (2) and an optical element (3). The optical element (3) comprises at least one surface (5), which is totally reflective for an ascertained range of incidence angles, for emitting light waves onto the holographic assembly (2), and the holographic assembly (2) comprises at least one reflection hologram for reflecting light waves emtted onto the holographic assembly (2) by means of the optical element (3). The optical element (3) comprises a coupling device (7) for coupling light waves into the wavefront manipulator (1), said coupling device comprising at least one prism.
The invention relates to a holographic lighting device having a central axis on which an edge-lit hologram and an illumination assembly for illuminating the hologram are arranged along the axis, which edge-lit hologram has a planar extent which is transverse to the central axis. The edge-lit hologram has a light-incoupling face at a transverse edge region of the edge-lit hologram, and the illumination assembly is designed to illuminate the light-incoupling face in order to emit illumination light into the edge-lit hologram via the light-incoupling face. The edge-lit hologram is designed to generate a holographic lighting function which is visible upon viewing the side of the edge-lit hologram that is remote from the illumination assembly. The invention further relates to an edge-lit hologram, spacers and/or an illumination assembly for an interlocking arrangement to form the holographic lighting device.
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
The present invention relates to a spectrometer for spectral analysis of electromagnetic radiation. The spectrometer comprises an entry slit for entry of the electromagnetic radiation to be analysed and an imaging grating for diffraction of the electromagnetic radiation which has entered. The spectrometer additionally comprises a detector extending at least in one direction to detect the diffracted electromagnetic radiation, and also a support plate in which the entry slit is located. The spectrometer further comprises a housing which is mounted on the support plate, covers the detector and the entry slit and supports the imaging grating. According to the invention the spectrometer further comprises at least three floating bearings for floating mounting of the housing on the support plate, the floating bearings each enabling a displacement between the housing and the support plate on a directional axis and being distributed about a central axis of the housing.
The invention relates to a waveguide for displaying an image, wherein: the waveguide (2) comprises a transparent base body (4) having a front face (5) and a rear face (6); the base body (4) has a coupling-in region (14) and a coupling-out region (15) which is spaced apart therefrom in a first direction, which coupling-out region has an image hologram (19) having an imprinted image; the coupling-in region (14) deflects at least some of the radiation (16) originating from a light source (3) such that the deflected part propagates as a coupled-in beam bundle (18) in the base body (4) by reflection as far as the coupling-out region (15) and impinges on the image hologram (19); the image hologram (19) deflecting at least part of the impinging beam bundle (18) in order to reconstruct the imprinted image such that the deflected part exits the base body (4) via the front face (5) or rear face (6) such that the imprinted image is perceptible for a viewer (B); the base body (4) has multiple layers, and at least one first layer (7) having a first refractive index and a second layer (9), formed on the first, having a second refractive index that is lower than the first refractive index; and the coupled-in beam bundle (18) in the first layer (7) propagates owing to internal total reflection at the boundary surface to the second layer (9).
B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
B60Q 3/62 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
The invention relates to a testing device (1) for detecting defects of transparent test specimens (5), in particular of ophthalmological lenses, with an illumination device (2) for transilluminating test specimens (5) to be examined and with an image acquisition device (3) for imaging the test specimen (5) transilluminated by the illumination device (2). The illumination device (2) comprises a plurality of linearly adjustable light sources (8) for generating a stripe pattern (7). In order to capture the stripe pattern (7), the acquisition duration of the image acquisition device (3) can be adjusted in such a way that the light emitted by each of the light sources (8) is detected as a light stripe (19.1). Furthermore, the invention relates to a testing method for detecting a defect of a transparent specimen.
Disclosed is a copy carrier arrangement which has a copy carrier, which comprises a photosensitive material, and a black cover (20) arranged on at least one side of the copy carrier (13), which comprises light absorbing carbon black particles and carrier material. A difference in refractive index between the copy carrier (13) and the carrier material at an interface between the black cover (20) and the copy carrier (13) is less than 0.2.
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/04 - Processes or apparatus for producing holograms
G03H 1/20 - Copying holograms by holographic means
91.
DEVICE FOR REPLICATING A MASTER HOLOGRAPHIC OPTICAL ELEMENT WITH VARIABLE ILLUMINATION
The invention relates to techniques for producing an HOE by replication of a master HOE. In particular, techniques that allow variable surface shape during replication are described. A curved trajectory is used for exposure.
The invention relates to techniques for producing an HOE by replication of a master HOE. In particular, techniques that allow variable surface shape during replication are described. A curved trajectory is used for exposure.
The invention relates to a system for generating a haptic perception and a holographic display. The system comprises a light source for emitting light and a main body comprising a substrate and at least one holographic-optical element. The light source and the main body comprising the holographic-optical element are designed to generate a holographic display in an interaction region. Simultaneously, the system comprises one or more sound transducers for emitting sound waves in the direction of the interaction region, such that pressure fluctuations within the interaction region can be haptically perceived. The system is characterised in that the substrate is located between the one or more sound transducers and the interaction region and has sound channels in the form of openings through which the sound can propagate. The invention also relates to the use of the system according to the invention to generate a holographic display and a haptic perception.
G03H 1/00 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
G03H 3/00 - Holographic processes or apparatus using ultrasonic, sonic, or infrasonic waves for obtaining hologramsProcesses or apparatus for obtaining an optical image from them
G10K 11/26 - Sound-focusing or directing, e.g. scanning
Various examples relate to techniques for actively or passively stabilizing the temperature of a holographic optical element. For this purpose, heat-conducting elements are provided, for example silver nanowires or carbon nanotubes.
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/04 - Processes or apparatus for producing holograms
B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
C03C 17/00 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating
C03C 17/06 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with metals
C03C 17/28 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with organic material
C03C 17/36 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
The invention preferably relates to an imaging unit comprising: a light source (1) for generating illumination radiation (2); and a light-modulating pixel array (4) for generating an image by modulating, pixel by pixel, the illumination radiation (2) incident on the pixel array (4). The imaging unit is characterised in that the illumination radiation (2), when it strikes the light-modulating pixel array (4), has a lateral extent which is smaller than the pixel array (4) and is guided over the pixel array (4) by means of a scanning unit (3) in order to generate an image. By combining the scanning process of the illumination radiation (2) over the light-modulating pixel array (4), the speckle signatures of the scanning unit (3) and of the pixel array (4) are superimposed or combined in order to generate a pixel. Advantageously, visible speckle patterns in the resulting image can be significantly reduced.
A device for data projection, includes a holographic element arranged as a imaging element for a windshield. An imaging device has a first imaging system and a second imaging system configured to illuminate the holographic element. The holographic element has a first volume hologram structured to be angle-selective for light under a first illumination angle and to generate a first two-dimensional virtual image at a first fixed distance from the holographic element corresponding to the first image data, and a second volume hologram structured to be angle-selective for light under a second illumination angle and to generate a second two-dimensional virtual image at a second fixed distance from the holographic element different from the first distance corresponding to the second image data, such that the first and second images are viewable separately and simultaneously by a person.
A lighting device, in particular a rear luminaire, for a vehicle is provided. The lighting device has a hologram and a light source for illuminating the hologram. An image, more particularly a real image, is thereby generated, which can also lie outside the physical boundaries of the lighting device.
G03H 1/00 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto
B60Q 1/26 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
In one aspect, the invention relates to a lightguide structure for illumination, detection and/or holographic representation, comprising at least one planar lightguide for guiding electromagnetic radiation of at least a first spectrum, at least one illumination arrangement located on the first side face of the lightguide, and at least one holographic outcoupling structure for coupling out electromagnetic radiation guided in the lightguide structure. The light radiated in by the illumination arrangement can have a large angular range, the holographic outcoupling structure having a small angular range. The invention also relates to a production method for such a lightguide structure and to an operating element comprising a lightguide structure.
G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms
B60K 35/00 - Instruments specially adapted for vehiclesArrangement of instruments in or on vehicles
B60Q 3/10 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors for dashboards
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
G02B 6/10 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06F 3/046 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
G06F 3/04815 - Interaction with a metaphor-based environment or interaction object displayed as three-dimensional, e.g. changing the user viewpoint with respect to the environment or object
G03H 1/00 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto
99.
PROJECTION UNIT, AND PROJECTION DEVICE HAVING A PROJECTION UNIT
1111) by virtue of the fact that, for each of the volume gratings applied by exposure, the number of interference maxima applied by exposure is the same and the refractive index modulation for the corresponding wavelength, which refractive index modulation is applied by exposure, is the same.
The invention relates to a projection device comprising an imaging module (2) which generates a multi-color image such that a first color sub-image with a first wavelength and a second color sub-image with a second wavelength are generated, a projection unit (3) which is supplied with the multi-color image and images said image into an exit pupil (6) such that the image can be perceived as a virtual image by a viewer when the eye (A) of the viewer is positioned in the exit pupil (6) and the viewer views the projection unit (3) at a specified viewing angle, wherein the projection unit (3) has a volume hologram which deflects the multi-color image into the exit pupil (6) for imaging purposes, and the volume hologram has a volume grid for each wavelength of the color sub-image, said volume grid having a respective deflection efficiency curve which is based on the viewing angle and which is maximal at the specified viewing angle such that a first efficiency ratio of the first deflection efficiency curve for the first wavelength to the deflection efficiency curve of the second wavelength is produced. The deflection efficiency curves for a specified angular range about the specified viewing angle are set such that the first efficiency ratio for the specified angular range is constant. The imaging module (2) is actuated such that when the multi-color image is generated, a first brightness ratio of the brightness of the first color sub-image to the brightness of the second color sub-image is inversely proportional to the first efficiency ratio such that the different deflection efficiency curves are compensated for and such that the viewer can perceive the multi-color image as a true-color virtual image at viewing angles from the specified angular range.
G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique
