A modification setup including an array of modification units, each positioned and configured to: cause light of an input optical beam to pass through a corresponding input surface of the respective modification unit, in a manner that reduces exceeding of its light, from a first effective aperture of the input surface; and modify beam profile of the input optical beam, to form an intermediate optical beam having a beam profile of illumination distribution factor that is higher than that of the input optical beam. An output surface of the modification unit, located at a distance D from the input surface is configured and positioned such that the intermediate optical beam passes through the output surface at increased illumination cover area and decreased exceeding from a second effective aperture of the output surface. Each input beam may be collimated before entering the input surface of a corresponding modification unit.
G02B 6/42 - Coupling light guides with opto-electronic elements
2.
A SYSTEM, A SUBSYSTEM AND A METHOD FOR SUPPRESSION OF SPECKLES IN AN IMAGING SYSTEM AND AN IMAGING SYSTEM USING A TRANSMISSION SUBSYSTEM WITH SPECKLE SUPPRESSION ABILITIES
Systems, subsystems and methods for speckle suppression for an imaging system, that use: an illumination setup configured to emit light of a narrow wavelength bandwidth; and a number of wavelength (WL) converters, each configured to receive at least a portion of the light emitted by the illumination setup and convert spectral properties of the received at least portion of the light, to form an array of "n" number of spectrally differentiated input beams; and a spectral beam combining (SBC) setup configured for beam combining of the array of spectrally differentiated input beams emanating from the illumination setup, outputting a combined multispectral beam. The systems, subsystems and/or methods is/are configured to emit output light, for illuminating at least one surface of an area of interest (AOI) in a manner that causes speckle suppression and also mitigates spatial intensity distribution expansion affects caused due to the speckle suppression.
G02B 26/08 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
A mount surrounding a rigid body within an enclosure, is provided herein. The mount includes: a first pair of a first pin and first spherical bearing, wherein the first pin is movable within the first spherical bearing while being in contact with the rigid body such that two degrees of freedom (DOF) restriction enable a displacement of the rigid body; a second pair of a second pin and second spherical bearing, wherein the second pin is movable within the second spherical bearing while being in contact with the rigid body such that two DOF restriction enable a displacement of the rigid body; and a third pair of a third pin and third spherical bearing, wherein the third pin is movable within the third spherical bearing while being in contact with the rigid body such that two DOF restriction enable a displacement of the rigid body.
Multi-Channels coherent beam combining (CBC) using a mechanism for phase and/or polarization locking that uses a reference optical beam and an array of optical detectors each detector being configured and located to detect overall intensity of an optical interference signal caused by interfering of the reference beam and a beam of the respective channel, where the fast intensity per-channel detection allows simultaneous and quick phase/polarization locking of all channels for improving beam combining system performances.
G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour
H01S 3/00 - Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
H01S 3/101 - Lasers provided with means to change the location from which, or the direction in which, laser radiation is emitted
H01S 3/13 - Stabilisation of laser output parameters, e.g. frequency or amplitude
H01S 5/40 - Arrangement of two or more semiconductor lasers, not provided for in groups
5.
SYSTEMS, DEVICES AND METHODS FOR OPTICAL BEAM COMBINING
Aspects of embodiments pertain to systems and methods for beam combining, using at least a first set of coherent beam combining (CBC) devices, each being configured to combine coherent optical beams directed thereto and to output a coherent combined output optical beam and at least one additional combining device, configured to combine multiple optical beams. Combined output optical beams, outputted by each CBC device of the first set of CBC devices, are directed towards an input surface of the at least one additional combining device, which combines the directed combined output optical beams, outputted by the first set of CBC devices, by the at least one additional combining device, outputting a single combined final output optical beam and directing thereof externally from the at least one additional combining device.
G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
A tiled collimator array is disclosed. The tiled collimator array includes, a plurality of endcaps each being connected to an optical fiber at a back end, wherein the endcaps are selected from hexagonal endcaps and quadrangular endcaps; and an adhesive gluing the endcaps to each other, wherein the endcaps are stacked together in a compacted structure.
G02B 6/32 - Optical coupling means having lens focusing means
G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
A holder for aligning optical endcaps each connected to an optical fiber. The holder comprises: a body comprising: at least one row of bores, each being dimensioned to receive a single optical endcap; at least one adhesive channel, crossing at least one row of bores and configured to deliver and hold an adhesive material for fixating each optical endcap to a corresponding bore; and an array of cooling channels connected to at least one inlet and at least one outlet for circulating a cooling fluid, wherein the array of cooling channels is arranged to encompass at least a portion of the outer walls of each bore.
A correction optical element (COE) for a multi-channeled coherent beam combining (CBC) system that uses a fiber array comprising multiple optical fibers and a single collimation array comprising multiple collimating lenses, for coherent combining of a corresponding array of optical beams directed through the fiber array. The COE is configured for customized and segmented correction of collimation-based optical aberrations, caused at least due to misalignments between each corresponding optical fiber's Lij output end and a center of a corresponding collimating lens Lij.
Embodiments pertain to a compact fiber packaging apparatus configured to guide an active fiber as part of a high power fiber laser. The apparatus may comprise a base having a front side and a back side. The front side may comprise a front spiral groove of varying radii increasingly extending from an innermost front loop having an innermost radius to an outermost front loop having an outermost radius, and the back side may comprise a back spiral groove of varying radii decreasingly extending from an outermost back loop having an outermost radius to an innermost back loop having an innermost radius. The front spiral groove extends from the innermost front loop to the outermost front loop which connects with the outermost back loop of the back spiral groove to terminate at the innermost back loop.
The presently disclosed subject matter aims to a system and method directed to artificially color images acquired from image acquisition channels, cameras, imaging systems (such as, multispectral image acquisition systems, hyperspectral image acquisition systems, etc.) and the like, and present them as pseudo-Red, Green, and Blue (RGB) images to a user.
A system for detecting one or more target materials in an un-calibrated multi- spectral data cube comprising a collection of pixels, the system comprising a processing circuitry configured to: obtain: (A) a machine learning model capable of receiving the un-calibrated multi-spectral data cube and determining for at least one pixel of the pixels at least one material indicator, indicative of existence of a given target material of the target materials at the location of the pixel, wherein the machine learning model is trained utilizing a labeled training-data set comprising of a plurality of training records, each training record comprising: (i) a training un-calibrated multi- spectral data cube, and (ii) at least one training material indicator associated with at least one pixel of the training un-calibrated multi- spectral data cube, indicative of existence of the target material at the location of the pixel, and (B) the un-calibrated multi- spectral data cube; and determine for at least one pixel of the pixels of the un-calibrated multi- spectral data cube, at least one material indicator, and a corresponding calibrated multi- spectral data cube, wherein the corresponding calibrated multi- spectral data cube is calculated by utilizing a calibration process and an atmospheric simulator that simulates a plurality of simulated un-calibrated multi- spectral data cubes by simulation of different atmospheric conditions over the calibrated multi-spectral cube.
A passive stabilization system (PSS) for stabilizing a payload being carried by a carrier, the PSS nay include a linear displacement subsystem (LDS), fixedly connectable to the carrier at one side thereof and fixedly connectable to a payload at another side thereof, such that the LDS is located between the payload and the carrier. The LDS may be configured to enable a three-dimensional (3D) linear displacement of the pay load in respect to the carrier, for reducing responsive relative angular movements of the payload in respect to the carrier, for maintaining a stable relative angular orientation of the payload in respect to the carrier.
F16F 15/04 - Suppression of vibrations of non-rotating, e.g. reciprocating, systemsSuppression of vibrations of rotating systems by use of members not moving with the rotating system using elastic means
F16F 15/02 - Suppression of vibrations of non-rotating, e.g. reciprocating, systemsSuppression of vibrations of rotating systems by use of members not moving with the rotating system
13.
OPTICAL PATH LENGTH ADJUSTMENT FOR MULTI-CHANNEL OPTICAL SYSTEMS
G02B 6/27 - Optical coupling means with polarisation selective and adjusting means
G02B 6/28 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
Systems, methods and subsystems for adjustment of optical path length (OPL) of optical beams of a multi-channel optical system, by using an OPL adjustment subsystem that includes an array of OPL adjustors, each configured and located to controllably adjust OPL of an optical beam of a corresponding optical channel. For each optical beam of each optical channel one or more updated properties associated with the optical beam is detected to determine, based on detected data analysis, required one or more updated adjustor-control properties, for achieving an associated desired OPL adjustment of the corresponding optical beam. Each OPL adjustor is controlled to adjust the OPL of its corresponding optical beam, according to the determined one or more updated adjustor- control properties. The detection, analysis and/or OPL adjustment may be performed in a parallel manner to all optical channels of the multi-channel optical system.
G02B 6/28 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
G02B 6/27 - Optical coupling means with polarisation selective and adjusting means
C03B 37/027 - Fibres composed of different sorts of glass, e.g. fibre optics
C03B 37/025 - Manufacture of glass fibres or filaments by drawing or extruding from reheated softened tubes, rods, fibres or filaments
15.
SYSTEMS, SETUPS, UNITS AND METHODS FOR BEAM PROFILE MODIFICATION
A modification setup including an array (2500) of modification units (320), each positioned and configured to: cause light of an input optical beam (IB) to pass through a corresponding input surface (IS1) of the respective modification unit, in a manner that reduces exceeding of its light, from a first effective aperture of the input surface; and modify beam profile of the input optical beam, to form an intermediate optical beam (IMB) having a beam profile of illumination distribution factor that is higher than that of the input optical beam. An output surface (IS2) of the modification unit, located at a distance D from the input surface is configured and positioned such that the intermediate optical beam passes through the output surface at increased illumination cover area and decreased exceeding from a second effective aperture of the output surface. Each input beam may be collimated (311, 2400) before entering the input surface of a corresponding modification unit.
A mount surrounding a rigid body within an enclosure, is provided herein. The mount includes: a first pair of a first pin and first spherical bearing, wherein the first pin is movable within the first spherical bearing while being in contact with the rigid body such that two degrees of freedom (DOF) restriction enable a displacement of the rigid body; a second pair of a second pin and second spherical bearing, wherein the second pin is movable within the second spherical bearing while being in contact with the rigid body such that two DOF restriction enable a displacement of the rigid body; and a third pair of a third pin and third spherical bearing, wherein the third pin is movable within the third spherical bearing while being in contact with the rigid body such that two DOF restriction enable a displacement of the rigid body.
Multi-Channels coherent beam combining (CBC) using a mechanism for phase and/or polarization locking that uses a reference optical beam and an array of optical detectors each detector being configured and located to detect overall intensity of an optical interference signal caused by interfering of the reference beam and a beam of the respective channel, where the fast intensity per-channel detection allows simultaneous and quick phase/polarization locking of all channels for improving beam combining system performances.
Multi-Channels coherent beam combining (CBC) using a mechanism for phase and/or polarization locking that uses a reference optical beam and an array of optical detectors each detector being configured and located to detect overall intensity of an optical interference signal caused by interfering of the reference beam and a beam of the respective channel, where the fast intensity per-channel detection allows simultaneous and quick phase/polarization locking of all channels for improving beam combining system performances.
H01S 3/13 - Stabilisation of laser output parameters, e.g. frequency or amplitude
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
H01S 3/101 - Lasers provided with means to change the location from which, or the direction in which, laser radiation is emitted
H01S 3/136 - Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling devices placed within the cavity
G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour
20.
LASER DIODE BASED SYSTEMS, SUBSYSTEMS AND METHODS WITH TEMPERATURE CONTROL
Systems subsystems and methods for controlling temperature of a laser diode (LD) stack including at least one LD bar of at least one LD emitter, for achieving a desired temperature of the LD stack and corresponding emission wavelength of the LD emitter(s) of the stack, using: a thermal unit (TU) for controlling temperature of the LD bar/stack; a measuring device for detecting updated ambient temperature in an area of the LD bar; and a main controller controlling operation of the TU, for achieving the desired temperature and its corresponding emission WL. At least one side of the TU is in direct thermal contact with a corresponding side of each LD stack, forming a contact surface area S1 between the TU and the LD stack, where the size of S1 corresponds to a size of an overall TU contact surface area S2 facing the LD stack to reduce temperature control speed.
Systems subsystems and methods for controlling temperature of a laser diode (LD) stack including at least one LD bar of at least one LD emitter, for achieving a desired temperature of the LD stack and corresponding emission wavelength of the LD emitter(s) of the stack, using: a thermal unit (TU) for controlling temperature of the LD bar/stack; a measuring device for detecting updated ambient temperature in an area of the LD bar; and a main controller controlling operation of the TU, for achieving the desired temperature and its corresponding emission WL. At least one side of the TU is in direct thermal contact with a corresponding side of each LD stack, forming a contact surface area S1 between the TU and the LD stack, where the size of S1 corresponds to a size of an overall TU contact surface area S2 facing the LD stack to reduce temperature control speed.
Method for displaying super-resolution video of at least one-moving object without image artifacts, including the procedures of acquiring microscanned images of at least one moving object, a first and second subset of the images respectively forming a first and second data set, for each data set, analyzing at least a portion of the sub-set of the images for spatial and temporal information, determining a respective movement indication of the moving object according to the spatial and temporal information, in parallel to the procedure of analyzing, forming a respective super-resolution image from each data set and designating a respective bounded area surrounding the moving object, and repeatedly displaying each super-resolution image outside the bounded area a plurality of times at a video frame rate and displaying during those times within the respective bounded area, a plurality of consecutive microscanned images of the moving object at the video frame rate.
G06V 10/26 - Segmentation of patterns in the image fieldCutting or merging of image elements to establish the pattern region, e.g. clustering-based techniquesDetection of occlusion
Multi-Channels coherent beam combining (CBC) using a mechanism for phase and/or polarization locking that uses a reference optical beam and an array of optical detectors each detector being configured and located to detect overall intensity of an optical interference signal caused by interfering of the reference beam and a beam of the respective channel, where the fast intensity per-channel detection allows simultaneous and quick phase/polarization locking of all channels for improving beam combining system performances.
H01S 3/13 - Stabilisation of laser output parameters, e.g. frequency or amplitude
H01S 3/101 - Lasers provided with means to change the location from which, or the direction in which, laser radiation is emitted
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
H01S 3/136 - Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling devices placed within the cavity
24.
CORRECTION OPTICAL ELEMENTS FOR COHERENT BEAM COMBINING SYSTEMS AND SYSTEMS AND METHODS FOR COHERENT BEAM COMBINING USING SAME
A correction optical element (COE) for a multi-channeled coherent beam combining (CBC) system that uses a fiber array comprising multiple optical fibers and a single collimation array comprising multiple collimating lenses, for coherent combining of a corresponding array of optical beams directed through the fiber array. The COE is configured for customized and segmented correction of collimation-based optical aberrations, caused at least due to misalignments between each corresponding optical fiber's Lij output end and a center of a corresponding collimating lens Lij.
A correction optical element (COE) for a multi-channeled coherent beam combining (CBC) system that uses a fiber array comprising multiple optical fibers and a single collimation array comprising multiple collimating lenses, for coherent combining of a corresponding array of optical beams directed through the fiber array. The COE is configured for customized and segmented correction of collimation-based optical aberrations, caused at least due to misalignments between each corresponding optical fiber's Lij output end and a center of a corresponding collimating lens Lij.
The presently disclosed subject matter aims to a system and method directed to artificially color images acquired from image acquisition channels, cameras, imaging systems (such as, multispectral image acquisition systems, hyperspectral image acquisition systems, etc.) and the like, and present them as pseudo-Red, Green, and Blue (RGB) images to a user.
G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
G01N 21/35 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
27.
System and method for controlling output of light towards objects
Embodiments pertain to a system for controlling outputting of light towards objects, the system comprising a detection subsystem configured to detect, for at least one object, one or more values of object characteristics, the object characteristics comprising, at least, electromagnetic absorption characteristics, wherein detection of object characteristic values is performed such that the object remains structurally intact; a light source subsystem comprising at least one light source for generating output light and directing the output light towards an object; and a controller configured to control, based on the detected object characteristics values, at least one operational parameter value of the at least one light source such that at least some of the output light that is directed towards the object has electromagnetic characteristics that correspond to the detected values of the electromagnetic absorption characteristics of the object, in order to structurally change at least part of the respective object.
Aspects of embodiments pertain to beam combining devices for coherent and spectral beam-combining. The coherent beam combining (CBC) device may comprise a monolithic body having an input surface and an output surface. The input surface may be configured to direct a plurality of coherent entering optical beams through an optical pathway inside the monolithic body towards the output surface; and a phase mask configured for combining beams, exiting from the output surface of the monolithic body, to form a single combined output beam. The Spectral beam combining (SBC) device may include a monolithic body configured to direct the entering optical beams through a multi-diffraction optical pathway inside the monolithic body by directing the entering optical beams such as to impinge a diffractive surface thereof at least twice, for combining the entering optical beams into a single multispectral combined output optical beam. Embodiments may also include methods for cascaded beam combining, using multiple combining devices in a network configuration.
G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
Multi-Channels coherent beam combining (CBC) using a mechanism for phase and/or polarization locking that uses a reference optical beam and an array of optical detectors each detector being configured and located to detect overall intensity of an optical interference signal caused by interfering of the reference beam and a beam of the respective channel, where the fast intensity per-channel detection allows simultaneous and quick phase/polarization locking of all channels for improving beam combining system performances.
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
H01S 3/13 - Stabilisation of laser output parameters, e.g. frequency or amplitude
H01S 5/40 - Arrangement of two or more semiconductor lasers, not provided for in groups
30.
SYSTEMS AND METHODS FOR ENHANCED MOTION DETECTION, OBJECT TRACKING, SITUATIONAL AWARENESS AND SUPER RESOLUTION VIDEO USING MICROSCANNED IMAGES
Method for displaying super-resolution video of at least one moving object without image artifacts using a plurality of microscanned images, including the procedures of acquiring microscanned images of at least one moving object, a first and second subset of the images respectively forming a first and second data set, for each data set, analyzing at least a portion of the subset of the images for spatial and temporal information, determining a respective movement indication of the moving object according to the spatial and temporal information, in parallel to the procedure of analyzing, forming a respective super-resolution image from each data set and designating a respective bounded area surrounding the moving object, and repeatedly displaying each super-resolution image outside the bounded area a plurality of times at a video frame rate and displaying during those times within the respective bounded area, a plurality of consecutive microscanned images of the moving object at the video frame rate.
H04N 5/349 - Extracting pixel data from an image sensor by controlling scanning circuits, e.g. by modifying the number of pixels having been sampled or to be sampled for increasing resolution by shifting the sensor relative to the scene
The present invention provides an active fiber package for use in a fiber laser, amplifier, or ASE source comprising: a plate-shape base comprising a groove having a configuration of at least two spirals for receiving and fixedly holding an active fiber therein, said at least two spirals are coplanar enabling visibility of said active fiber, the outer loop of one spiral transitioning smoothly to the outer loop of another spiral, and the inner loop of each one of said spirals transitioning smoothly into a relatively short straight section; wherein a portion of said straight section of one of said spirals spliced to a coupling fiber, and wherein multiple inner loops of each one of said spirals in proximity to said straight section having a relatively low radius of curvature for enabling tight coiling of said active fiber, thus, for reducing thermal modal instability (TMI) and increasing lasing power.
Embodiments pertain to a system for controlling outputting of light towards objects, the system comprising a detection subsystem configured to detect, for at least one object, one or more values of object characteristics, the object characteristics comprising, at least, electromagnetic absorption characteristics, wherein detection of object characteristic values is performed such that the object remains structurally intact; a light source subsystem comprising at least one light source for generating output light and directing the output light towards an object; and a controller configured to control, based on the detected object characteristics values, at least one operational parameter value of the at least one light source such that at least some of the output light that is directed towards the object has electromagnetic characteristics that correspond to the detected values of the electromagnetic absorption characteristics of the object, in order to structurally change at least part of the respective object.
The present invention, disclose an endcap comprising: a. a first part being at least partially symmetrical about a main axis, said first part being fused to an optical fiber at a proximal end thereof such that said main axis is alignable with an optical axis of the optical fiber beam; and, b. a second part connecting to said first part at a distal end of said first part, wherein said second part protrudes from said first part, such that said second part forms a protruding bonding area, which is perpendicular to said main axis, for attaching said endcap to a fixture attachment area of a fixture apparatus, said fixture attachment area is perpendicular to said main axis, wherein said endcap is inserted at least partially inside said fixture apparatus, whereby, said endcap keeps said optical fiber beam aligned and minimizes angular diversion from an original alignment.
Aspects of embodiments pertain to beam combining devices for coherent and spectral beam-combining. The coherent beam combining (CBC) device may comprise a monolithic body having an input surface and an output surface. The input surface may be configured to direct a plurality of coherent entering optical beams through an optical pathway inside the monolithic body towards the output surface; and a phase mask configured for combining beams, exiting from the output surface of the monolithic body, to form a single combined output beam. The Spectral beam combining (SBC) device may include a monolithic body configured to direct the entering optical beams through a multi-diffraction optical pathway inside the monolithic body by directing the entering optical beams such as to impinge a diffractive surface thereof at least twice, for combining the entering optical beams into a single multispectral combined output optical beam. Embodiments may also include methods for cascaded beam combining, using multiple combining devices in a network configuration.
Aspects of embodiments pertain to beam combining devices for coherent and spectral beam-combining. The coherent beam combining (CBC) device may comprise a monolithic body having an input surface and an output surface. The input surface may be configured to direct a plurality of coherent entering optical beams through an optical pathway inside the monolithic body towards the output surface; and a phase mask configured for combining beams, exiting from the output surface of the monolithic body, to form a single combined output beam. The Spectral beam combining (SBC) device may include a monolithic body configured to direct the entering optical beams through a multi-diffraction optical pathway inside the monolithic body by directing the entering optical beams such as to impinge a diffractive surface thereof at least twice, for combining the entering optical beams into a single multispectral combined output optical beam. Embodiments may also include methods for cascaded beam combining, using multiple combining devices in a network configuration.
A current regulator for a pulsed load is provided herein. The current regulator may include: an input power source; a current sense circuit; a capacitive energy storage device; a current sink driver; a current source charger which receives input current from the input power source via the current sense circuit and provides a charge for the capacitive energy storage device coupled between the current source charger and the current sink driver which drives the pulsed load; a power monitor circuitry which generates a feedback signal, based on a function of the input power and a function of at least one of: voltage across the capacitive energy storage, or voltage across the current sink driver; and a pulse width modulation (PWM) or pulse frequency modulation (PFM) circuitry which controls the current source charger based on the feedback signal.
A system and a method of increasing an area continuously captured by an image capturing device directed at said area are provided herein. The method may include the following steps: directing said image capturing device at said area in a specified image orientation; receiving momentary orientation measurements of said image capturing device; calculating in real-time, based on said measurements, a shift in orientation of said image capturing device relative to said specified image orientation; providing instructions for rotation in real-time of said image capturing device, to compensate for said shift; and rotating, using a rotation mechanism, said image capturing device based on said instructions, wherein the image capturing device is mounted on a non-stationary platform moving in a periodic pattern.
The present invention provides an active fiber package for use in a fiber laser, amplifier, or ASE source comprising: a plate-shape base comprising a groove having a configuration of at least two spirals for receiving and fixedly holding an active fiber therein, said at least two spirals are coplanar enabling visibility of said active fiber, the outer loop of one spiral transitioning smoothly to the outer loop of another spiral, and the inner loop of each one of said spirals transitioning smoothly into a relatively short straight section; wherein a portion of said straight section of one of said spirals spliced to a coupling fiber, and wherein multiple inner loops of each one of said spirals in proximity to said straight section having a relatively low radius of curvature for enabling tight coiling of said active fiber, thus, for reducing thermal modal instability (TMI) and increasing lasing power.
The present invention provides an active fiber package for use in a fiber laser, amplifier, or ASE source comprising: a plate-shape base comprising a groove having a configuration of at least two spirals for receiving and fixedly holding an active fiber therein, said at least two spirals are coplanar enabling visibility of said active fiber, the outer loop of one spiral transitioning smoothly to the outer loop of another spiral, and the inner loop of each one of said spirals transitioning smoothly into a relatively short straight section; wherein a portion of said straight section of one of said spirals spliced to a coupling fiber, and wherein multiple inner loops of each one of said spirals in proximity to said straight section having a relatively low radius of curvature for enabling tight coiling of said active fiber, thus, for reducing thermal modal instability (TMI) and increasing lasing power.
A method and a system for determining a handover between at least two energy directing elements are provided herein. The system may include two or more energy directing elements that have a common overlap area defining an area that is coverable by a beam of said two or more energy directing elements, wherein one of the energy directing elements is an active energy directing element that aims on and tracks a target; a handover decision module configured to: obtain a plurality of handover parameters; determine, based on the obtained handover parameters and a plurality of handover rules, a handover point within the overlap area in which handover between the active energy directing element to one other of said at least two energy directing elements; and a controller configured to carry out the handover between the energy directing elements based on the determined handover point.
F41G 5/08 - Ground-based tracking-systems for aerial targets
F41H 13/00 - Means of attack or defence not otherwise provided for
G01S 3/78 - Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
41.
SYSTEM AND METHOD FOR CARRYING OUT A FLEXIBLE HANDOVER BETWEEN MULTIPLE ENERGY DIRECTING ELEMENTS
A method and a system for determining a handover between at least two energy directing elements are provided herein. The system may include two or more energy directing elements that have a common overlap area defining an area that is coverable by a beam of said two or more energy directing elements, wherein one of the energy directing elements is an active energy directing element that aims on and tracks a target; a handover decision module configured to: obtain a plurality of handover parameters; determine, based on the obtained handover parameters and a plurality of handover rules, a handover point within the overlap area in which handover between the active energy directing element to one other of said at least two energy directing elements; and a controller configured to carry out the handover between the energy directing elements based on the determined handover point.
H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
F41G 5/08 - Ground-based tracking-systems for aerial targets
F41H 13/00 - Means of attack or defence not otherwise provided for
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G01S 3/78 - Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
Depolarized fiber lasers and respective methods are provided for increasing the SBS (stimulated Brillouin scattering) threshold. The laser source is constructed by a frequency-broadened seed source having a frequency bandwidth of less than 50 GHz, and the depolarization of the seed source is carried out at time scales shorter than 10 ns. At least one amplifier is configured to receive and amplify radiation from the frequency-broadened seed source and deliver the amplified radiation in the optical fiber. Depolarization may be achieved in various ways (e.g., using an interferometer with added length to one arm) and is kept at time scales shorter than tens of nanoseconds, typically shorter than 5-10 ns, which distinguish it from random polarization having polarization changes at longer time scales. Polarization maintaining fibers may be used to further increase the SBS by separating the polarizations states.
H01S 3/30 - Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
H01S 3/094 - Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
H01S 3/23 - Arrangement of two or more lasers not provided for in groups , e.g. tandem arrangement of separate active media
H01S 3/0941 - Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a semiconductor laser, e.g. of a laser diode
43.
MECHANISM, SYSTEM AND METHOD FOR REDUCING INTERNAL AIR TEMPERATURE GRADIENT IN A CENTRALLY-OBSCURED REFLECTIVE TELESCOPE
A catadioptric optical system (CDOS) having a centrally obscured reflective telescope, which includes: a telescope compartment defining a telescope space therein, a primary reflector having a central opening and a secondary reflector. The reflectors are located in the telescope compartment. The CDOS also includes a mechanism for reducing temperature gradient in the telescope space. The mechanism includes an air duct having a first opening and a second opening; a hollow enclosure having side openings and one or more airflow generation devices. The mechanism is configured for forming an air passageway between the airflow generation device and the inner telescope space via the air duct and hollow enclosure located therebetween, for reducing internal air temperature gradient in the telescope space.
The present invention, disclose an endcap comprising: a. a first part being at least partially symmetrical about a main axis, said first part being fused to an optical fiber at a proximal end thereof such that said main axis is alignable with an optical axis of the optical fiber beam; and, b. a second part connecting to said first part at a distal end of said first part, wherein said second part protrudes from said first part, such that said second part forms a protruding bonding area, which is perpendicular to said main axis, for attaching said endcap to a fixture attachment area of a fixture apparatus, said fixture attachment area is perpendicular to said main axis, wherein said endcap is inserted at least partially inside said fixture apparatus, whereby, said endcap keeps said optical fiber beam aligned and minimizes angular diversion from an original alignment.
In some embodiments, a catadioptric optical system (CDOS) including a centrally obscured reflective telescope is disclosed, which includes: a telescope compartment defining a telescope space therein, a primary reflector including a central opening and a secondary reflector. The reflectors are located in the telescope compartment. The CDOS also includes a mechanism for reducing temperature gradient in the telescope space. The mechanism includes an air duct including a first opening and a second opening; a hollow enclosure including side openings and one or more airflow generation devices. The mechanism is configured for forming an air passageway between the airflow generation device and the inner telescope space via the air duct and hollow enclosure located therebetween, for reducing internal air temperature gradient in the telescope space.
G02B 23/00 - Telescopes, e.g. binocularsPeriscopesInstruments for viewing the inside of hollow bodiesViewfindersOptical aiming or sighting devices
G02B 7/18 - Mountings, adjusting means, or light-tight connections, for optical elements for prismsMountings, adjusting means, or light-tight connections, for optical elements for mirrors
G02B 23/02 - Telescopes, e.g. binocularsPeriscopesInstruments for viewing the inside of hollow bodiesViewfindersOptical aiming or sighting devices involving prisms or mirrors
G02B 23/16 - HousingsCapsMountingsSupports, e.g. with counterweight
peak and non-WL diode(s). Pumping radiation off the fiber's absorption peak increases the modal instability threshold, most likely by reducing the temperature gradient in the active fiber at the fiber pump entrance point and along the fiber.
H01S 3/102 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
H01S 3/094 - Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
H01S 3/0941 - Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a semiconductor laser, e.g. of a laser diode
H01S 5/068 - Stabilisation of laser output parameters
A current regulator for a pulsed load is provided herein. The current regulator may include: an input power source; a current sense circuit; a capacitive energy storage device; a current sink driver; a current source charger which receives input current from the input power source via the current sense circuit and provides a charge for the capacitive energy storage device coupled between the current source charger and the current sink driver which drives the pulsed load; a power monitor circuitry which generates a feedback signal, based on a function of the input power and a function of at least one of: voltage across the capacitive energy storage, or voltage across the current sink driver; and a pulse width modulation (PWM) or pulse frequency modulation (PFM) circuitry which controls the current source charger based on the feedback signal.
A system and a method of increasing an area continuously captured by an image capturing device directed at said area are provided herein. The method may include the following steps: directing said image capturing device at said area in a specified image orientation; receiving momentary orientation measurements of said image capturing device; calculating in real-time, based on said measurements, a shift in orientation of said image capturing device relative to said specified image orientation; providing instructions for rotation in real-time of said image capturing device, to compensate for said shift; and rotating, using a rotation mechanism, said image capturing device based on said instructions, wherein the image capturing device is mounted on a non-stationary platform moving in a periodic pattern.
Depolarized fiber lasers and respective methods are provided for increasing the SBS (stimulated Brillouin scattering) threshold. The laser source is constructed by a frequency-broadened seed source having a frequency bandwidth of less than 50GHz, and the depolarization of the seed source is carried out at time scales shorter than 10ns. At least one amplifier is configured to receive and amplify radiation from the frequency-broadened seed source and deliver the amplified radiation in the optical fiber. Depolarization may be achieved in various ways (e.g., using an interferometer with added length to one arm) and is kept at time scales shorter than tens of nanoseconds, typically shorter than 5-10ns, which distinguish it from random polarization having polarization changes at longer time scales. Polarization maintaining fibers may be used to further increase the SBS by separating the polarizations states.
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
An apparatus for increasing the resolution of at least one portion of a cryogenically cooled and vacuum-sealed infrared imaging detector including a two-dimensional detector array having a fill factor value, the portion of the array successively exposed to an image scene to acquire multiple infrared imaging samples of the scene, a masking filter having a single pattern, disposed between the array and the image scene and operative to reduce the fill factor value of the portion of the array by a fill factor reduction amount (FFRA), an optical element disposed between the masking filter and the image scene, a directional angle shifter for shifting an angle at which the imaging samples are directed onto the portion of the array thereby successively shifting the image scene relative to the portion of the array between each of the imaging samples by a shifting increment corresponding to the FFRA and a processor.
H04N 5/349 - Extracting pixel data from an image sensor by controlling scanning circuits, e.g. by modifying the number of pixels having been sampled or to be sampled for increasing resolution by shifting the sensor relative to the scene
Fiber lasers and methods are provided, in which the modal instability threshold is raised to provide more laser power. Fiber lasers comprise an active optical fiber having at least one absorption peak wavelength (λpeak) and capable of supporting more than a fundamental mode during operation, and a plurality of pump diodes connected to deliver radiation emitted thereby into the optical fiber. At least one of the pump diodes is a wavelength-locked (WL) diode and at least one of the pump diodes is configured to deliver radiation at at least λ≠λpeak (not necessarily the same diode(s)). The pump diodes may comprise any of WL diode(s) at λ≠λpeak, WL diode(s) at λ=λpeak and non-WL diode(s). Pumping radiation off the fiber's absorption peak increases the modal instability threshold, most likely by reducing the temperature gradient in the active fiber at the fiber pump entrance point and along the fiber.
A system and method for analyzing quality criteria of a radiation spot are provided herein. The system may include: at least one controllable electromagnetic radiation source configured to generate and transmit a radiation beam onto an object, resulting in a radiation spot on said object; at least one radiation sensor configured to sense and obtain radiation reflections coming back from said object, wherein the radiation beam is generated in a way that reflections from different ranges are distinguishable of each other; and an analyzer configured to analyze said radiation reflections, and determine a remedy to the radiation beam, in a case that said radiation spot does not meet predefined spot validity criteria. The method may implement the aforementioned logic in a different architecture.
09 - Scientific and electric apparatus and instruments
Goods & Services
System for detection of and protection against missiles and parts and fittings therefor comprising infrared, ultra-violet and radar missile warning detectors indicating that a missile has been fired, laser generated jammers producing laser beams to counter fired missiles, forward-looking infrared thermal camera for acquisition and tracking of missiles, high speed armored turret enabling accurate tracking of missile seekers, and system processor hardware coordinating aforesaid parts
09 - Scientific and electric apparatus and instruments
Goods & Services
Intelligence, surveillance, target acquisition and
reconnaissance, stabilized, electro-optical system, namely,
hardware and software based system mountable on a variety of
platforms, for around-the-clock surveillance, tracking,
targeting, fire-control, searching, rescue and range finding
operations.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Intelligence, surveillance, target acquisition and reconnaissance, stabilized, electro-optical system, namely, hardware and software based system mountable on a variety of platforms, for around-the-clock surveillance, tracking, targeting, fire-control, searching, rescue and range finding operations
57.
SYSTEM AND METHOD FOR ANALYZING QUALITY CRITERIA OF A RADIATION SPOT
A system and method for analyzing quality criteria of a radiation spot are provided herein. The system may include: at least one controllable electromagnetic radiation source configured to generate and transmit a radiation beam onto an object, resulting in a radiation spot on said object; at least one radiation sensor configured to sense and obtain radiation reflections coming back from said object, wherein the radiation beam is generated in a way that reflections from different ranges are distinguishable of each other; and an analyzer configured to analyze said radiation reflections, and determine a remedy to the radiation beam, in a case that said radiation spot does not meet predefined spot validity criteria. The method may implement the aforementioned logic in a different architecture.
A system and method for analyzing quality criteria of a radiation spot are provided herein. The system may include: at least one controllable electromagnetic radiation source configured to generate and transmit a radiation beam onto an object, resulting in a radiation spot on said object; at least one radiation sensor configured to sense and obtain radiation reflections coming back from said object, wherein the radiation beam is generated in a way that reflections from different ranges are distinguishable of each other; and an analyzer configured to analyze said radiation reflections, and determine a remedy to the radiation beam, in a case that said radiation spot does not meet predefined spot validity criteria. The method may implement the aforementioned logic in a different architecture.
09 - Scientific and electric apparatus and instruments
Goods & Services
Wide area surveillance system for mounting on aircraft to provide high-resolution motion imagery consisting of digital cameras, computer hardware, and computer operating software
Apparatus for increasing resolution of cryogenically cooled vacuum-sealed infrared imaging detector. A two-dimensional detector array of photosensitive pixels is successively exposed to an image scene, acquiring multiple imaging samples. A masking filter, disposed between the detector array and image scene, is maintained at a fixed position with respect to the detector array, and masks part of the active region of the detector array pixels by a fill factor reduction amount. Shifting means successively shifts the optical path of the image scene relative to the masking filter to image different sub-pixel regions in each imaging sample, by successively repositioning an optical element, disposed between the masking filter and image scene, relative to the masking filter and detector array. The shifting increment corresponds to the fill-factor reduction amount. A processor reconstructs an image frame having a resolution greater than the intrinsic detector resolution by the fill-factor reduction amount.
Apparatus for increasing resolution of cryogenically cooled vacuum-sealed infrared imaging detector. A two-dimensional detector array of photosensitive pixels is successively exposed to an image scene, acquiring multiple imaging samples. A masking filter, disposed between the detector array and image scene focal plane, is maintained at a fixed position with respect to the detector array, and reduces the region of pixels collecting incident radiation for each imaging sample such that only a portion of each pixel area of the image scene is imaged onto the corresponding detector array pixel. Shifting means successively shifts the optical path of the image scene relative to the masking filter, by a shifting increment or fill-factor reduction amount equal to a fraction of the array pixel width, to image different sub-pixel regions in each imaging sample. A processor reconstructs an image frame having a resolution greater than the intrinsic detector resolution by the fill-factor reduction amount.
H04N 5/349 - Extracting pixel data from an image sensor by controlling scanning circuits, e.g. by modifying the number of pixels having been sampled or to be sampled for increasing resolution by shifting the sensor relative to the scene
A cA crystal configured to change a frequency of a laser through an optical parametric oscillation (OPO) process and a difference frequency generation (DFG) process is provided. The crystal includes: an OPO-DFG segment that is quasi-periodically poled to yield (i) a conversion of a laser pump light applied thereto, to a first signal and an idler, and (ii) a conversion of a first signal applied thereto, to a second signal and to the idler, by phase-matching a difference frequency generation (DFG) process and an OPO process therein simultaneously, wherein the laser pump light has a frequency that equals a sum of a frequency of the first signal and a frequency of the idler and wherein the frequency of the first signal equals a sum of a frequency of the second signal and the frequency of the idler.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Laser designators and markers, namely, laser equipment for military use to designate targets for laser-guided weapons, to identify and display target locations and to transmit target location data to weapon systems.
Imaging device and method, the device including receiver optics, a diffractive and focusing surface, and a pair of diffractive and focusing arrangements, the receiver optics receiving radiation including a first wavelength selected from a first spectral band, and a second spectral band, where the first wavelength is substantially a multiplicative factor less than the midpoint of the second spectral band, the diffractive and focusing surface diffracting the first wavelength at an order of diffraction substantially equal to the multiplicative factor, and diffracting the second spectral band at a first order of diffraction, each of the diffractive and focusing arrangements diffracting, in turn, the first wavelength at a first order of diffraction, such that the first wavelength and the second spectral band emanating from the second diffractive and focusing arrangement focuses at a substantially common focal length and at a substantially common focal plane width.
09 - Scientific and electric apparatus and instruments
Goods & Services
Laser designators and markers, namely, laser equipment for military use to designate targets for laser-guided weapons, to identify and display target locations and to transmit target location data to weapon systems
68.
Modulation of fiber laser pumped difference frequency generator
Systems and methods for modulating the output of a difference frequency generator such as an OPO, OPA or OPG include a pump fiber laser having at least one internal, directly modulatible component, wherein the pump fiber laser produces a pump signal, and a difference frequency generator coupled to the pump fiber laser. The difference frequency generator is configured for accepting the pump signal of the pump fiber laser and producing an output signal, wherein parameters of the output signal are determined based on direct modulation of the internal, directly modulatible component of the pump fiber laser.
G02F 1/39 - Non-linear optics for parametric generation or amplification of light, infrared, or ultraviolet waves
H01S 3/094 - Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
A system and method for improving conversion efficiency of a difference frequency generator (DFG) and/or for outputting a desired shape of the output signal, where the method includes providing a pump source, modifying the pump pulse temporal shape for optimal DFG conversion efficiency, and providing the modified pump pulse to the DFG. The pump source may be, for example, a MOPA laser or a diode or any other suitable source. In one embodiment, the pump pulse shape is modified such that an initial gain within the DFG is high, followed by a lower level signal for efficient conversion within the DFG. An example of such a shape is a double square pulse. Other configurations are possible as well such as a single rectangular pulse shape.
Tunable spectral filter includes a Fabry-Perot interferometer (FPI), at least three actuators, at least three respective spring elements, and at least three respective sensors. The FPI includes two optical elements each having a partially reflective surface, with an optical cavity defining an optical gap between the two surfaces. The actuators, spring elements and sensors are disposed along the periphery of the optical elements. Multi―wavelength incident light enters the first optical element toward the optical cavity. Each actuator applies a selective force to move the optical element surfaces relative to each other, as the respective spring element applies an opposing force, thereby establishing an optical gap width, while maintaining the optical element surfaces substantially in parallel. Each sensor continuously detects the optical gap width and the planar parallelism, and provides a feedback signal to the actuators to apply selective forces to adjust the optical gap width or planar parallelism, if necessary.
A system for coupling light into a fiber in accordance with embodiments of the present invention include a first fiber, a second fiber which is a double clad fiber, and a bulk optic component positioned between the first and second fibers. At least one mode stripper is positioned between the first fiber entry port and the second fiber exit port providing for limiting and removal of propagating clad light.
H01S 3/30 - Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
A cA crystal configured to change a frequency of a laser through an optical parametric oscillation (OPO) process and a difference frequency generation (DFG) process is provides. The crystal includes: an OPO/DFG segment that is quasi-periodically poled to yield (i) a conversion of a pump light applied thereto, to a first signal and an idler, and (ii) a conversion of a first signal applied thereto, to a second signal and to an idler signal, by phase-matching a difference frequency generation (DFG) process and an OPO process therein simultaneously, wherein the pump light has a frequency that equals a sum of a frequency of the first signal and a frequency of the idler and wherein the frequency of the first signal equals a sum of a frequency of the second signal and the frequency of idler.
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
H01S 3/13 - Stabilisation of laser output parameters, e.g. frequency or amplitude
H01S 3/102 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
H01S 3/131 - Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
73.
OPTICAL DEVICE AND METHOD FOR CORRECTING CHROMATIC ABERRATIONS
Imaging device and method, the device including receiver optics, a diffractive and focusing surface, and a pair of diffractive and focusing arrangements, the receiver optics receiving radiation including a first wavelength selected from a first spectral band, and a second spectral band, where the first wavelength is substantially a multiplicative factor less than the midpoint of the second spectral band, the diffractive and focusing surface diffracting the first wavelength at an order of diffraction substantially equal to the multiplicative factor, and diffracting the second spectral band at a first order of diffraction, each of the diffractive and focusing arrangements diffracting, in turn, the first wavelength at a first order of diffraction, such that the first wavelength and the second spectral band emanating from the second diffractive and focusing arrangement focuses at a substantially common focal length and at a substantially common focal plane width.
Systems and methods for modulating the output of a difference frequency generator such as an OPO, OPA or OPG include a pump fiber laser having at least one internal, directly modulatible component, wherein the pump fiber laser produces a pump signal, and a difference frequency generator coupled to the pump fiber laser. The difference frequency generator is configured for accepting the pump signal of the pump fiber laser and producing an output signal, wherein parameters of the output signal are determined based on direct modulation of the internal, directly modulatible component of the pump fiber laser.
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
H01S 3/00 - Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
75.
SYSTEM AND METHOD FOR CONTROLLING OPTICAL OUTPUT OF A FREQUENCY CONVERSION DEVICE
A system and method for improving conversion efficiency of a difference frequency generator (DFG) and/or for outputting a desired shape of the output signal, where the method includes providing a pump source, modifying the pump pulse temporal shape for optimal DFG conversion efficiency, and providing the modified pump pulse to the DFG. The pump source may be, for example, a MOPA laser or a diode or any other suitable source. In one embodiment, the pump pulse shape is modified such that an initial gain within the DFG is high, followed by a lower level signal for efficient conversion within the DFG. An example of such a shape is a double square pulse. Other configurations are possible as well such as a single rectangular pulse shape.
Head-up display scenery alignment system, the head-up display being mounted in an aircraft and including an image projector and a combiner. The combiner is optically located between a user and a scenery of interest, optically transmitting a scene image of the scenery of interest to the user. The image projector projects an image toward the combiner, and the combiner reflects the image toward the user. The aircraft includes a heading angle sensor, determining the heading angle of the aircraft. The HUD scenery alignment system includes a moving mechanism coupled with the combiner; and a processor coupled with the heading angle sensor, with the moving mechanism and with the projector. The processor receives heading angle information from the heading angle sensor, and the processor determines the deviation of the heading of the aircraft from the longitudinal axis of the aircraft according to the heading angle information. The processor directs the moving mechanism, according to the deviation, to move the combiner to a position which is located between the scenery of interest and the user and which aligns the reflection of the image toward the user, with the scene image.
A head-up display system includes a display device for generating and displaying information to an eye of an observer; a tilted power combiner for superimposing the information displayed by the display device onto the forward view of the outside by the eye of the observer; and a relay optic assembly between the display device and the tilted power combiner for forming an intermediate image of the displayed information forwardly of the combiner that reflects the image towards the eye of the observer within an eye motion box to produce a large field of view for the observer. The relay optic assembly is void of holographic elements and includes a spherical mirror generating aberrations in the intermediate image tending to compensate for aberrations produced by the tilted power combiner.
Head up display (HUD) for displaying a combined image of a scene image of a scene and an informative image, for an observer, the HUD including an image source, an optical relay, a low physical height horizontally expanding optical assembly and a planar optical module, the image source for producing a substantially small narrow angle informative image, the optical relay for producing a substantially large narrow angle informative image, by enlarging the substantially small narrow angle informative image, received from the image source, the low physical height horizontally expanding optical assembly for producing a horizontally expanded image, by horizontally expanding the substantially large narrow angle informative image, received from the optical relay, and the planar optical module for producing a substantially large informative image, by vertically expanding the horizontally expanded image, and further producing the combined image, by combining the substantially large informative image with the scene image.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Multi-sensor stabilized system for day and night scanning, tracking, observation, designation, range finding, target illumination, spot tracking and targeting for marine, ground and air applications
09 - Scientific and electric apparatus and instruments
Goods & Services
Multi-sensor stabilized system for day and night scanning, tracking, observation, designation, range finding, target illumination, spot tracking and targeting for marine, ground and air applications.
81.
EYE DETECTION SYSTEM AND METHOD FOR AUTOMATIC ACTIVATION OF A VIEWING DEVICE
Eye detection system integrated within a viewing device, the system including an LED disposed above and adjacent to a display of the viewing device, a viewing lens, a light router disposed on an optical axis between the LED and the viewing lens, and a sensor, the LED emitting eye safe light along the optical axis through the light router and through the viewing lens toward the eye of a user, the light reflecting back from the retina of the eye along the optical axis toward the light router, which directs the reflected light toward the sensor in a direction different from the optical axis, the sensor being monitored to determine if the sensor detected light reflected from the eye of a user, the camera activated when a positive determination is made, and deactivated when a negative determination is made.
A method for presenting an advised action for recovering an aircraft from an unusual flight attitude, the method including the procedures of: retrieving real-time flight parameters; retrieving aircraft aerodynamic characteristics; determining if the aircraft is at the unusual flight attitude; determining an attitude recovery scheme; and presenting the attitude recovery scheme.
G05D 1/10 - Simultaneous control of position or course in three dimensions
G01C 23/00 - Combined instruments indicating more than one navigational value, e.g. for aircraftCombined measuring devices for measuring two or more variables of movement, e.g. distance, speed or acceleration
Fiber lasers for producing Band I wavelengths include a laser cavity having an optical fiber with specific parameters in length and thickness and doping concentration, and having high reflectivities. Examples show the feasibility of producing such fiber lasers. Fiber lasers for producing Band IV wavelengths include a depolarized laser oscillator, at least one amplifier and a polarizer. Depolarized laser oscillator is an inherently depolarized CW laser, or a depolarized laser diode, which is depolarized by a depolarizer. Additional fiber lasers in accordance with embodiments of the present invention include a double clad active optical fiber having a pump power entry point for sending pump energy through the active optical fiber in a first direction, and a loop portion at a second end of the fiber for sending pump energy through the active optical fiber in a second direction which is opposite to the first direction. A system for coupling light into a fiber in accordance with embodiments of the present invention include a first fiber, a second double clad fiber, and a bulk optic component positioned between the first and second fibers. A mode stripper included within the second fiber allows for removal of high power light which is propagated through the outer clad rather than launched into the core of the second fiber.
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
84.
VIBRATORY GYROSCOPIC DEVICE FOR DETERMINING ANGULAR VELOCITY
A vibratory gyroscope comprising a substrate, a ring, at least one capaciti actuator and at least one capacitive sensor, a central support having a diameter smaller than the ring diameter and being coupled with the substrat and a plurality of support springs that are coupled with the ring, the at least one capacitive actuator being capacitively coupled with the ring, for applying an elliptic mode frequency to the ring, the capacitive sensor bein capacitively coupled with the ring, for sensing the changes in capacitance, the device further comprising a. latching assembly for decreasing the aspect ratio between the capacitive sensor and the ring, the assembly having a movable frame, coupled with the capacitive sensor, the movable frame latche from a manufacturing configuration to an operating configuration, in respon to a force applied thereto, wherein, the aspect ratio at the manufacturing configuration is lower than the aspect ratio at the operating configuration.
G01C 19/5684 - Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using the phase shift of a vibration node or antinode of essentially two-dimensional vibrators, e.g. ring-shaped vibrators the devices involving a micromechanical structure
85.
Method and system for visually presenting a high dynamic range image
Method for presenting an image, exhibiting a dynamic range, the method including the procedures of determining the dynamic range of the image, determining a color space configuration including more than one cycle of a color space, applying the color space configuration to the dynamic range, and displaying the image to a user, according to the color space configuration.
A photogrammetric imaging system and method that includes a camera array of two or more cameras directed coplanarly at different angles for angular separation. A forward motion correction tiltable support to which the camera array is coupled is provided, adapted to be tilted at a predetermined time and angular velocity for compensating for blur caused by forward motion of a platform on which the system is mounted. A roll mechanism for rolling the ' camera array is provided, allowing sweeping-motion, and a lateral motion correction optical mechanism is also provided for lateral motion correction for each of the cameras compensating for the lateral roll.
An angular position sensor, especially for use in a galvanometric scanning system, and including a sectorized photodetector with an illumination shielding plate attached to a shaft whose rotation is to be sensed. The photodetector has two opposed sectors, preferably disposed diametrically opposite each other, such that incident illumination from a source is differentially modulated by rotation of the shielding plate. In addition, at least a third sector is provided which is always illuminated by the source regardless of the rotational position of the shielding plate. The output from the diametrically opposed sectors is used to determine the rotational angle of the shaft, while the output from the third sector is used to stabilize the illumination source, such that the output of the two opposed sectors of the detector is insensitive to changes in temperature.
G01D 5/34 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
G01D 5/347 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
G01D 3/036 - Measuring arrangements with provision for the special purposes referred to in the subgroups of this group mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves
The invention relates to an observation system that comprises at least one platform means and a video or image sensor installed on said platform means in order to produce several images of an area of interest under varying conditions and a computer system in order to perform registration between said images and wherein said system is characterized by a clustering-based image registration method implemented in said computer system, which includes steps of inputting images, detecting feature points, initial matching of feature points into pairs, clustering feature point pairs, outlier rejection and defining final correspondence of pairs of points.
Fiber lasers for producing Band I wavelengths include a laser cavity having an optical fiber with specific parameters in length and thickness and doping concentration, and having high reflectivities. Examples show the feasibility of producing such fiber lasers. Fiber lasers for producing Band IV wavelengths include a depolarized laser oscillator, at least one amplifier and a polarizer. Depolarized laser oscillator is an inherently depolarized CW laser, or a depolarized laser diode, which is depolarized by a depolarizer. Additional fiber lasers in accordance with embodiments of the present invention include a double clad active optical fiber having a pump power entry point for sending pump energy through the active optical fiber in a first direction, and a loop portion at a second end of the fiber for sending pump energy through the active optical fiber in a second direction which is opposite to the first direction. A system for coupling light into a fiber in accordance with embodiments of the present invention include a first fiber, a second double clad fiber, and a bulk optic component positioned between the first and second fibers. A mode stripper included within the second fiber allows for removal of high power light which is propagated through the outer clad rather than launched into the core of the second fiber.
Fiber laser (130) , for producing a single mode (SM) polarized single frequency (SF) high power laser beam of light, the fiber laser including an SF laser oscillator (132) , a fiber laser pre amplifier (134, 150) and a high power fiber laser power amplifier (136, 200, 300), the fiber laser pre amplifier being optically coupled with the laser oscillator and the high power fiber laser power amplifier being optically coupled with the fiber laser pre amplifier, the SF laser oscillator for generating a laser beam of light having a predetermined frequency, the fiber laser pre amplifier for pre amplifying the laser beam of light and the high power fiber laser power amplifier for amplifying the laser beam of light, the high power fiber laser power amplifier including a fiber optic isolator (206, 302) , at least one first amplification stage (202, 314) and at least one second amplification stage (204, 316), the fiber optic isolator being optically coupled with the fiber laser pre amplifier and the second amplification stage being optically coupled with the first amplification stage, the first amplification stage for amplifying the laser beam of light, the second amplification stage for further amplifying the laser beam of light and the second amplification stage outputting the laser beam of light (230, 310) .
G01S 17/95 - Lidar systems, specially adapted for specific applications for meteorological use
G01P 5/26 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
91.
METHOD AND SYSTEM FOR VISUALLY PRESENTING A HIGH DYNAMIC RANGE IMAGE
Method for presenting an image, exhibiting a dynamic range, the method including the procedures of determining the dynamic range of the image, determining a color space configuration including more than one cycle of a color space, applying the color space configuration to the dynamic range, and displaying the image to a user, according to the color space configuration. Thus a false color representaion of the image is generated.
