Abstract: The invention relates to sources of optical radiation wherein polarized radiation from first and second rows of light emitters is first collimated and combined into two combined beam using first and second rows of collimating and beam re-directing elements, respectively, and then polarization multiplexed to form a polarization-multiplexed output beam. In order to reduce the footprint, emitters of the first and second emitter rows are disposed in an interleaved, staggered arrangement, and the second row of collimating and beam re-directing elements is disposed in a space between the first emitter row and the first row of collimating and beam re-directing elements.

Abstract: Disclosed are a wafer-level lens array, a method of manufacturing a wafer-level lens array, a lens module, and an imaging unit capable of preventing the permeation of air into a substrate unit or a lens unit to be molded when a wafer-level lens array having the substrate unit and the lens units integrated with each other is molded. There is provided a method of integrally manufacturing a wafer-level lens array including a substrate unit and a plurality of lens units arranged on the substrate unit using a transfer mold having a plurality of concave portions corresponding to at least the plurality of lens units provided in a surface thereof. The method includes: supplying a resin to each concave portion, the amount of resin supplied being more than the volume of the concave portion; and performing molding to integrate the resin overflowing from the concave portions, thereby forming the substrate unit.

Abstract: A device for beam forming includes at least two laser light sources capable of emitting laser radiation and an optical device capable of influencing the laser radiation such that the laser radiation has an intensity distribution in a working plane that at least partially corresponds to a top-hat distribution at least with regard to one direction. The laser beam may be at least partially overlapped by the optical device. The laser beam is a single-mode laser beam at least with regard to a direction perpendicular to the distribution direction.

Abstract: A lens array unit focuses the light emitted from light emitting elements on the photoconductive drum. A longitudinally extending lens array includes a plurality of lenses and projections. The lenses are aligned in a row substantially perpendicular to optical axes of the lenses. The projections are disposed on both sides of the row, and extend outwardly further than the lens surfaces to protect the lens surfaces of the plurality of lenses. A light shielding member includes a mounting portion that holds the lens plate and a light shielding portion that shields part light passing through the lenses.

Abstract: In a virtual image display device, a mirror layer has a thickness of 50 nm or more to perform non-transparent reflection in a second ridge line vicinity area on a third reflection face side in a ridge line portion extending between the third reflection face and a second reflection face. Accordingly, reflectance of image light can be prevented from being decreased by the second ridge line vicinity area (that is, a peripheral portion on a light guide unit in the third reflection face), and thus stripe-shaped brightness unevenness extending in a longitudinal direction can be prevented from occurring on the viewed image. That is, in the image display device, it is possible to secure sufficient reflection even in the peripheral portion close to a boundary with the second reflection face with respect to the third reflection face, and also to display a bright image with little brightness unevenness.

Abstract: A lenticular sheet, in one exemplary embodiment, includes a first surface having at least two portions, an opposing second surface, and a plurality of lenticular lenses formed in the first surface. Each portion of the first surface includes a number of lenticular lenses per centimeter that is different from the number of lenticular lenses per centimeter of an adjacent portion of the first surface.

Abstract: A system for retaining an optical element with a card assembly and heat sink is provided. The retaining system includes an optical element fastener and a retainer member. The optical element fastener is configured to hold the optical element to the heat sink. The retaining member is configured to hold the card assembly to the heat sink, and also serves to make the optical element fastener captive. In one embodiment, the retaining member includes a ridge for holding the card assembly to the heat sink. The top end of the retainer member may also include one or more recessed slots for tool engagement to facilitate fastening of the retainer member. In one embodiment, the retaining member is threaded at the bottom end to fasten the retaining member to the heat sink. Also, in one embodiment the retaining member includes an axial opening used to access the optical element fastener.

Abstract: An optical system is disclosed that includes a housing that has an interior, a reflective interior surface, and a first opening. The optical system further includes a spatial light modulator that is disposed proximate the first opening and a light source that is disposed within the interior of the housing. The spatial light modulator modulates the light that is emitted by the light source to form image rays. The optical system further includes a first light redirecting film that is disposed proximate the first opening between the spatial light modulator and the light source. The first light redirecting film recycles at least a portion of the light that is emitted by the light source. The optical system further includes an optically absorptive film that is disposed proximate the first opening between the spatial light modulator and the viewing position. The optically absorptive film receives the image rays from the spatial light modulator and displays the received image rays to the viewing position.

Abstract: A lens array is formed on one surface of a deposition donor substrate and a light absorption layer is formed on the other surface; a material layer is formed in contact with the light absorption layer; the surface of the deposition donor substrate on which the material layer is formed and a deposition target surface of a deposition target substrate are disposed to face each other; and at least part of the light absorption layer is selectively irradiated with light from the side of the deposition donor substrate, on which the lens array is provided, to heat the material layer in a region overlapped by the region irradiated with the light in the light absorption layer, thereby performing deposition to the deposition target surface of the deposition target substrate.

Abstract: A freeform optical device is disclosed which has an at least partially curved surface with a surface geometry. Surface normals at multiple locations on the surface geometry can be computed to define the surface geometry with respect to multiple focal points corresponding to the surface normals at the locations in order to correct optical aberrations otherwise occurring at the focal points.

Abstract: There is provided: an optical sheet, which has excellent productivity while maintaining an optical performance and can reduce a manufacturing cost; an image source unit; a display device; a method for producing an optical sheet; and a method for manufacturing a display device.

Abstract: In a laser source module aligning laser beams from laser sources for three colors, red, green, and blue on a single combined beam optical axis, decreasing relative displacements of beam spots of three colors, occurring due to thermal deformation by temperature rise, is achieved by a laser source module including plural laser sources, each incorporating a laser having a laser chip installed on a heat sink and a lens converting a light radiated from the laser into a laser beam, and a beam combining unit aligning the laser beams from the laser sources on a single combined beam optical axis, wherein the lasers in at least two or more ones of the laser sources are arranged so that their laser beams will be decentered toward a same direction on the combined beam optical axis upon displacement of an emission point of the laser chip away from the heat sink.

Abstract: An apparatus for homogenizing light, including a lens array (5, 7, 8) with a plurality of lenses (6, 9, 10) through which the light to be homogenized can pass. The apparatus has at least two different center-to-center distances of the lenses (6, 9, 10) of the lens array (5, 7, 8), wherein the center-to-center distances of the lenses (6, 9, 10) decrease or increase from the inside to the outside.

Abstract: An optical element and image capture lens structure. The optical element includes a substrate and an optical component with at least one effective area and non-effective area, formed on the substrate, wherein the non-effective area has a rough surface. The image capture lens structure includes a substrate, an optical component formed on the substrate, and a spacer with a micro structure, attached to the substrate by an adhesive, wherein the micro structure is located between the adhesive and the optical component to prevent the overflow of the adhesive.

Abstract: An optical arrangement has a laser configured to emit a laser beam, an amplitude mask and a focusing element. The amplitude mask is disposed between the laser and the focusing element in a path of the laser beam such that the laser beam hits the amplitude mask before being modified by the focusing element so as to direct the laser beam to a focal point within a photosensitive material.

Abstract: A light source module of a projector includes a beam splitter, a red light source, a blue light source, and a blue light source. The beam splitter has a first reflection side, on which a first splitter film is provided, and a second reflection side, on which a second splitter film is provided. An angle between a normal line of the first reflection side, and a normal line of the second reflection side, is in a range between 165 degrees and 180 degrees. Both the first splitter film and the second splitter film permit red rays to pass therethrough. The red light source is separated from the blue and green light sources to obtain a better thermal dissipation.

Abstract: An imaging optical system includes a lens unit that includes a plurality of optical elements, and an optical path combining portion that includes a flat plate disposed so as to be inclined with respect to an optical axis of the lens unit, and the lens unit includes a correction portion that has a shape asymmetric with respect to the optical axis in a cross section that is parallel to both a normal of the flat plate and the optical axis.

Abstract: An image display apparatus includes plural image forming devices and an observation optical system that includes at least a first optical system configured to fold in a first section a luminous flux from a first image forming device by using a plurality of reflective surfaces and to guide the luminous flux from the first image forming device to the exit pupil, and a second optical system configured to fold in a second section a luminous flux from a second image forming device by using a plurality of reflective surfaces and to guide the luminous flux from the second image forming device to the exit pupil, wherein the first section intersects the second section on an axis that directs from one point in the exit pupil to one point in the observation field.

Abstract: In a method and apparatus for generating a focus error signal, an optical head and an optical driving apparatus are configured such that a light beam is divided into at least two light beams, coma aberration of a predetermined direction is added to one of the divided light beams, and coma aberration of a direction different from the predetermined direction of the coma aberration is added to the other divided light beam to thereby generate the focus error signal.

Abstract: A metamaterial for separating an electromagnetic wave beam is disclosed. Two kinds of man-made microstructures are attached on a substrate of the metamaterial. The first man-made microstructures each have a principal optical axis parallel to a first electric field direction, and the second man-made microstructures each have a principal optical axis parallel to a second electric field direction. The metamaterial comprises a first region and a second region. The first man-made microstructures in the first region have the largest geometric size and the first man-made microstructures in other regions increase in geometric size continuously in a direction towards the first region; and the second man-made microstructures in the second region have the largest geometric size and the second man-made microstructures in other regions increase in geometric size continuously in a direction towards the second region.

Abstract: A beamsplitter includes a bifurcated frame, which rotates about a vertical axis, enabling the transmissive properties of an optical element, e.g. etalon, mounted on one arm of the frame, to be tuned as the angle of the optical element is rotated relative to an incoming optical beam. A mirror is mounted on the other arm of the frame intersecting light reflected from the optical element and redirecting the reflected light along a path, which is constant relative to the incoming optical beam.

Abstract: A spectrograph including light beam reformatting element(s), beam expander(s), dispersive element(s) and light receiving element(s). The light beam reformatting element(s) reformat a received light beam into a reformatted light beam having a first dimension along a first axis that is larger than a dimension of the received light beam along the first axis and a second dimension along a second axis substantially orthogonal to the first axis that is smaller than a dimension of the received light beam along the second axis. The beam expander(s) anamorphically expand the reformatted light beam along the second axis into an expanded light beam. The dispersive element(s) disperse the expanded light beam along the second axis, resulting in a dispersed light beam. The light receiving element(s) receive the dispersed light beam. The light receiving element(s) may include one or more detectors to measure spectral intensity of the dispersed light beam.

Abstract: In order to increase the depth of field of an optical system, there is provision to add a phase object, interposed between an object (O) to be imaged and an image plane (8) of the optical system. The phase object is interposed although a chromatic aberration of the system is not yet corrected. After interposition, the measured optical signal is corrected complementarily so as to eliminate the chromatic aberrations therefrom. It is shown that if a parameter of the expansion of the expression, a function of pupil dependency, that the difference in path length of the optical system possesses a significant value of higher order than that of the defocus, then an increase in the depth of field is obtained.

Abstract: Field widening lens methods and systems are provided. The field widening lens includes a non-planar primary mirror and a secondary mirror. In addition, separate input and output ports are provided. The field widening lens further provides for an optical path difference for rays within the lens that is essentially zero for any ray within the field of view of an optical system including the field widening lens, regardless of the angle at which the ray entered the lens.

Abstract: A color separating optical system including first to third prisms for separating incident light from an objective lens into three primary color light components, so as to project three color-separated images of a subject onto first to third image sensors, respectively. In order to prevent ghosts from being superposed on a center area of an image frame, the color separating optical system satisfies the condition: ??(?m+?m+1)/2, wherein “?” represents a tilt angle of a second dichroic film on the second prism to a perpendicular plane to an optical axis of the objective lens, and “?m” a diffraction angle of the second light component diffractively reflected from the second image sensor and reentering the second prism.

Abstract: The present invention relates to a laser device comprising an array of several large area VCSELs (101) and one or several optics (201, 202) designed and arranged to image the active layers of the VCSELs (101) of said army to a working plane (501) such that the laser radiation emitted by the active layers of all VCSELs (101) or of subgroups of VCSELs (101) of the array superimposes in the working plane (501). The proposed laser device allows the generation of a desired intensity distribution in the working plane without the need of an optics specially designed for this intensity distribution or beam profile.

Abstract: The present invention relates to a light source apparatus or the like provided with a structure that can block reflected return light also when an emitting end side of an optical isolator is a space. The light source apparatus comprises a light source section, a guide section, and an optical module. The optical module includes a collimator, an optical isolator, and an oblique-beam blocking section. The collimator outputs collimated light with a predetermined beam diameter as a forward propagating beam. The optical isolator is a polarization-independent optical isolator that introduces the collimated light from a first end and outputs this collimated light from a second end.

Abstract: A collimating image-forming apparatus comprising a first linear polarizer is disclosed. A first quarterwave plate (14) is disposed adjacent the first polarizer (12) and has its fast and slow axes at substantially 45° to the plane of polarization of the first polarizer. The apparatus further comprises a beam-splitting curved mirror (16) having a convex surface adjacent the first polarizer and facing towards the first quarter-wave plate, a second quarter-wave plate (22) adjacent the concave side of the curved mirror, the second quarterwave plate having its having its fast and slow axes oriented with respect to the corresponding axes of the first quarter-wave plate at angles substantially equal to a first integral multiple of 90°, and a reflective-transmissive polarizing member (24) adjacent the second quarter-wave plate.

Abstract: A security device having a lenticular device that includes an array of lenticular focusing elements located over a corresponding array of sets of image strips such that at different viewing directions, a corresponding image strip from each set is viewed via respective ones of the lenticular focusing elements wherein the image strips are defined at least in part by a relief structure.

Abstract: The present invention provides an electro-optic unit. A lens unit disposed at an upper portion of a display panel has a plurality of lens part. An electro-optic unit is disposed between a display panel and a lens unit, and includes an electro-optic material layer formed as a graded refractive index lens in an electric field. A display device shows a two-dimensional and a three-dimensional image according to a mode of the electro-optic unit. A driving part may form the graded refractive index lens to have the same pitch as the pitch of the lens part. The graded refractive index lens may be formed as a convex lens or a Fresnel lens. The electro-optic unit is displayed to form the Fresnel lens. A driving method enhancing mode conversion velocity of the electro-optic unit is displayed.

Abstract: A laser system including a laser source that generates a laser beam and an optical switch that receives the laser beam and sends the laser beam to either a fast path or a slow path, wherein the F/# of the fast path is lower than the F/# of the slow path. The laser system includes an afocal optical system in the slow path and receives the laser beam from the optical switch and an x-y scanner that receives either a laser beam from the slow path or a laser beam from the fast path. The laser system including a scan lens system that performs a z-scan for the scanning laser beam only in the case wherein the scanning laser beam is generated from the laser beam in the fast path. The laser system including an aspheric patient interface device that receives a laser beam from the scan lens system.

Abstract: While one beam is being branched into a plurality of beams with different optical path lengths, the beams can be converged on the same position in the optical-axis direction with a simple structure even when relative angles between the beams differ. Provided is a beam splitter apparatus including a beam splitter that branches an input pulsed beam into two optical paths with different optical path lengths; relay optical systems that are disposed in the respective branching optical paths and that relay pupils in the optical paths; a beam splitter that multiplexes the relayed pulsed beams in the two optical paths; and a reflection optical system that endows pulsed beams branching off via the beam splitter with a relative angle.

Abstract: This invention presents a projection-receiving surface that has a surface having an undulating contour. The undulating contour comprises a plurality of alternating convex cylindrical surface segments and concave cylindrical surface segments. The convex cylindrical surface segments and concave cylindrical surface segments of the undulating contour of the surface arranged with cylindrical axes in a direction. The surface can further have an additional surface feature comprising striations, cusps, and/or nanoflaked reflector leaves. The striations are arranged crosswise to the undulating contour. The surface can be a reflection surface of a front projection-receiving surface.

Abstract: A low-cost monolithic optical module for splitting one or more input optical beams to two or more output optical beams is provided. The one or more input optical beams are reflected by two or more total internal reflection (TIR) surfaces of the monolithic optical module. A light splitting ratio between the two or more output optical beams is predetermined by one or more physical features of the two or more TIR surfaces.

Abstract: The present invention discloses a touch screen system comprising LED infrared transceivers installed at appropriate positions on left and right sides of the screen respectively, and a transmitter end of the transceiver transmits LED infrared waves and spreads spherical waves all over the surface of the screen. If the surface of the screen receives an intrusion from a touch control element, the spherical waves will be interfered, interrupted and reflected, and the wave frequency of the reflection will be detected by the receiver end of the transceiver. After the receiver end has received a reflection signal, the position coordinates of the touch control element can be analyzed through the operation of a core logical unit. A display module is provided for showing the movement path of the touch control element in images or lines, so as to provide a touch screen with low manufacturing cost and long life expectancy.

Abstract: A pulse of laser light is switched out of a pulse train and spatially dispersed into its constituent wavelengths. The pulse is collimated to a suitable size and then diffracted by high groove density multilayer dielectric gratings. This imparts a different angle to each individual wavelength so that, when brought to the far field with a lens, the colors have spread out in a linear arrangement. The distance between wavelengths (resolution) can be tailored for the specific laser and application by altering the number of times the beam strikes the diffraction gratings, the groove density of the gratings and the focal length of the lens. End portions of the linear arrangement are each directed to a respective detector, which converts the signal to a 1 if the level meets a set-point, and a 0 if the level does not. If both detectors produces a 1, then the pulse train is allowed to propagate into an optical system.

Abstract: Disclosed are method and apparatus for forming multiple images of an object comprising a plurality of depth segments. An optical system comprises an infinity optical subsystem and a multi-image optical subsystem. The infinity optical subsystem is configured to receive light from the object and form a first image focussed at infinity. A multi-image optical subsystem is configured to receive the first image and form multiple images via multiple focussing lenses. Each multiple image can correspond to a different depth segment. A portion of the light from the first image can also be filtered before entering a focussing lens. Multiple images under different filtering conditions, corresponding to different depth segments or to the same depth segment, can be formed.

Abstract: A method for forming, onto a linear array light modulator, a line of illumination that extends in a linear direction, the method includes forming a first linear beam array and a second linear beam array, both linear beam arrays comprising a plurality of laser beams; forming a mixed illumination by aligning the first linear beam array and the second linear beam array in the linear direction and directing the first and second linear beam arrays along a propagation path; magnifying the mixed illumination from the propagation path in the linear direction and relaying the magnified mixed illumination toward the linear array light modulator; and focusing the mixed illumination in the cross-array direction that is orthogonal to the linear direction onto the linear array light modulator.

Abstract: A beam splitter includes a first surface and a second surface. The first and second surfaces are linearly offset from one another along an axis. The first and second surfaces are positioned to receive an optical beam projected in a first direction that is generally perpendicular to the axis. The first surface is configured to redirect a first portion of the optical beam in a second direction that has a first rotational offset with respect to the first direction and a second rotational offset with respect to the axis. The second surface is configured to redirect a second portion of the optical beam in a third direction that has a third rotational offset with respect to the first direction and a fourth rotational offset with respect to the axis.

Abstract: To increase the depth of field of an optical system, an inversion of the chromatism is produced. This accommodates the fact that, in natural light, users prefer, for their photographs, taking long distance shots outdoors, where the illuminant is mostly composed of blue, and short-distance shots indoors, where the illuminant is mostly composed of red. While optical devices naturally focus the blue components at a shorter distance than the red components, which is unfavorable, with an inversion of the chromatism, a focus more in keeping with what is required is restored.

Abstract: A beam forming device produces a linear intensity distribution on a work plane. The device contains a laser light source that can emit laser radiation, an optical device that can transfer the laser radiation in a linear intensity distribution on the work plane, and lens that are used to influence the linear intensity distribution on the work plane and that can be displaced in the direction of diffusion of the laser radiation. The intensity profile can be modified perpendicular to the extension of the linear intensity distribution by modifying the position of the lens in the direction of diffusion of the laser radiation.

Abstract: A device for processing data being optically transmitted via a LRM connection includes an optical splitter for splitting an input signal into a first output signal and a second output signal, the optical splitter having an operating wavelength with a value that is between 1260 nm and 1355 nm, wherein the optical splitter has an input end for receiving the input signal, a first output end for outputting the first output signal, and a second output end for outputting the second output signal.

Abstract: A beam splitter optical surface comprises a transparent substrate and a multilayer optical coating applied in a pattern onto the transparent substrate. The multilayer optical coating has at least an optically reflective layer and an optically absorbent layer.

Abstract: The present invention relates to a method and device for the generation of reconstructions of information encoded on spatial light modulators by way of illumination with coherent incident waves. The invention includes the following steps: Splitting of the incident wave into at least two incident sub-waves, Modulation of the incident sub-waves with the help of selected apodization functions so to form modulated incident sub-waves, Direction of the modulated incident sub-waves towards the corresponding, spatially separated and pixel-matrix-shifted spatial light modulators, Diffraction of the modulated incident sub-waves at the encoded pixels of the respective spatial light modulators, Additive combination of the sub-waves emitted by the respective spatial light modulators to form one common emitted wave, and Transformation of the emitted wave into the Fourier plane with the help of a projection system.

Abstract: Some embodiments pertain to an optical zoom system. The optical zoom system includes a first inward-facing surface that is at least partly reflective and a second inward-facing surface that is at least partly reflective. The optical zoom system further includes a first aperture that includes a plurality of sub-apertures which are positioned around at least a portion of an outer periphery of one of the first and second inward facing surfaces. Each sub-aperture includes an optically powered element. The optical zoom system further includes a second aperture that exists proximate a central region of the optical zoom system. Light is reflected on the first and second inward facing surfaces as the light travels between the first aperture and the second aperture such that the light is optically combined into a single image before exiting the second aperture.

Abstract: Systems and methods for coherent beam combining are provided. In some aspects, a system may comprise a first array of laser emitters configured to emit a first array of output beams along a first optical path. The system may also comprise a first array of collimating lenses configured to collimate the first array of output beams. The system may also comprise a first lens configured to focus the first array of output beams at a first focal plane. The system may also comprise a first phase screen configured to combine the first array of output beams at the first focal plane to generate one or more first coherently combined beams. Each of the one or more first coherently combined beams corresponds to a phase combination of the first array of output beams.

Abstract: An optical lens assembly having a fluorescent layer is disclosed, which includes a partition frame with a partition ring protruding inwardly from an inner wall surface of the partition frame, two optical lenses, and a fluorescent layer, wherein a slot space is defined by the two optical lenses and the partition ring of the partition frame, and the fluorescent layer is accommodated within the slot space. The top optical lens can be a flat slab lens, or a convex lens. When the optical lens assembly having a fluorescent layer is used in the optical device, the moisture can be prevented from entering the fluorescent layer, and thus the optical performance of the fluorescent layer can be maintained over a long period.

Abstract: An optical combiner 100 includes: fibers for propagation of pumping light 20 configured to propagate pumping light; a fiber for propagation of laser light 10 configured to propagate laser light having a longer wavelength than the pumping light; and a large area fiber 30 having a core 31 and a clad 32 and configured to propagate laser light and pumping light, in which one end surface of the fiber for propagation of laser light 10 and one end surface of the large area fiber 30 are fused, one end surfaces of the fibers for propagation of pumping light 20 and the one end surface of the large area fiber 30 are fused, and the fiber for propagation of laser light 10 and the fibers for propagation of pumping light 20 are not fused to each other.

Abstract: A probe for use with an imaging system, including a scanning device configured to receive a first light beam from a light source, a beam-divider configured to split the first light beam into a plurality of second light beams, and a focusing device configured to focus each of the second light beams on respective locations in an object of interest.

Abstract: A recording medium includes lenticules and a guided portion guided by a guide portion which is provided in a supporter for supporting the recording medium provided on a recording apparatus carrying out a recording on the recording medium, so that the recording medium is guided in a predetermined conveying direction.