Abstract: An optical unit includes a light source that emits light to be projected onto a screen, one or a plurality of optical elements that controls a spread of a beam of light from the light source to the screen, a combining element that combines the light emitted from the light source, and a scanning element. The light source outputs an optical beam that will generate an elliptically shaped beam spot on the screen, the beam spot having a major axis substantially perpendicular to a scanning direction, and the light source is driven with pulse width modulation (PWM) so that one driven pulse corresponds to one beam spot on the screen.

Abstract: A projector includes: an illuminator that outputs illumination light; a light modulator including a liquid crystal panel and a structural birefringent polarization separation element having a polarization separation surface inclined away from a central axis of the illumination light, the light modulator modulating the illumination light from the illuminator; and a projection system that projects the light modulated by the light modulator, wherein the illumination light outputted from the illuminator has an angular distribution in a first direction, which is perpendicular to the central axis of the illumination light, smaller than the angular distribution in a second direction, which is perpendicular to the first direction and the central axis of the illumination light, and the polarization separation surface of the structural birefringent polarization separation element has a structure that is not periodic along the first direction but is periodic along the second direction.

Abstract: An optical polarization state modulator assembly for use in a stereoscopic three-dimensional image projection system includes a spatial light modulator, a light source emitting multiple wavelength components of light for incidence on the spatial light modulator, and a projection lens. A polarization converter system cooperates with the spatial light modulator to produce in alternating sequence polarized light carrying first and second perspective view images of a scene in different ones of first and second subframes. A polarization modulator, in response to first and second drive signals, imparts to, respectively, the image-carrying polarized light a first output polarization state during the first subframe and to the image-carrying polarized light a second output polarization state during the second subframe. The image-carrying polarized light in the first and second output polarization states propagates through the projection lens for transmission to an observer.

Abstract: A lighting device includes a first light source, a second light source of a light-emitting surface area larger than that of the first light source, first light-converging optics configured to converge light from the first light source into a first light beam, second light-converging optics configured to converge light from the second light source into a second light beam, and an illumination optical system configured to make the first light beam and the second light beam into illumination light, with a f-number of the illumination optical system for the second light beam being lower than a f-number of the illumination optical system for the first light beam.

Abstract: An illumination optical system includes a two-dimensional laser-array light source including a plurality of laser light sources arranged in a two-dimensional array on a plane; an integrator optical system configured to superpose incident light and emit the light to an irradiated surface; a plurality of first lenses disposed parallel to the plane and configured to superpose beams from the two-dimensional laser-array light source in a first axis direction and emit the beams to the integrator optical system while limiting a divergence angle in the first axis direction of the two-dimensional array; and a plurality of second lenses disposed rearward of the first lenses and configured to superpose the beams from the two-dimensional laser-array light source in a second axis direction orthogonal to the first axis direction and emit the beams to the integrator optical system while limiting a divergence angle in the second axis direction.

Abstract: Proposed are various embodiments of projection systems that generally provide stereoscopic images. The projection systems act to split a spatially separated image in a stereoscopic image frame and superimpose the left- and right-eye images on a projection screen with orthogonal polarization states. The embodiments are generally well suited to liquid crystal polarization based projection systems and may use advanced polarization control.

Abstract: A touching display panel and a display device using the same are provided. The touching display panel includes a liquid crystal layer, a first substrate having a hard surface structure, a second substrate, a touch sensor layer, a thin-film transistor layer, and a color filter layer. The first and second substrates are respectively disposed at two sides of the liquid crystal layer. The touch sensor layer is disposed between the first substrate and the liquid crystal layer, and is formed on the first substrate. The thin-film transistor layer and the color filter layer are both disposed between the first substrate and the second substrate. At least one of the thin-film transistor layer and the color filter layer is formed on the first substrate.

Abstract: A microlens array substrate is provided on which a plurality of microlenses is arranged, and the collection efficiency of a first microlens is lower than the collection efficiency of a second microlens positioned further to the outside edge sides than the first microlens.

Abstract: A display device includes: a light source section; first to third polarization plates disposed in this order from a side of the light source section; a liquid crystal display section provided in one of first and second regions, in which the first region lying between the first polarization plate and the second polarization plate and the second region lying between the second polarization plate and the third polarization plate; a liquid crystal barrier section provided in the other of the first and second regions and including a plurality of opening-closing sections to transmit or block light. An absorption axis of the third polarization plate is horizontally directed.

Abstract: A projection display apparatus comprises a reflective LC display device and a polarizing beam splitter having a polarizing separative plane and wired grids. The LC molecules of the device are aligned such that i) a segment on a second subtracted, produced by projecting a major axis of each LC molecule perpendicularly onto the second substrate, makes an angle of 42 to 48 degrees counterclockwise or counterclockwise in relation to a direction of a straight line on the second substrate, formed by projecting each wire grid perpendicularly onto the second substrate and ii) of both ends of the segment, one end meeting an end of each LC molecule, which is positioned nearer to the second substrate than the other end, is positioned nearer to an intersection at which a plane including the polarizing separative plane and a plane including the second substrate mutually intersects, than the other end of the segment.

Abstract: A cooling device for use in an electronic apparatus is capable of achieving a sufficient cooling capability with an effective replacement method in a narrow flow path. The cooling device for the electronic apparatus, which includes a plurality of members juxtaposed such that surfaces thereof confront each other, at least one of the members including a heat radiating surface, includes a first air-cooling member which includes a first outlet port that creates a first air stream, and a second air-cooling member which includes a second outlet port that creates a second air stream to flow in a direction different from the first air stream. The first and second outlet ports have different opening widths, respectively.

Abstract: In a display device that provides a first observation region with a first picture and provides a second observation region with a second picture, a double image made of the first picture and the second picture is suppressed. First columns of pixels that display the first picture and second columns of pixels that display the second picture are disposed alternately with a black matrix interposed between each neighboring pair of them. A light-shielding plate having light-shielding portions and openings is disposed above the panel.

Abstract: A projector includes an image projection unit that projects an image for left eye and an image for right eye, and a transmitting unit that transmits a synchronizing signal for synchronization with switching between the image for left eye and the image for right eye. The transmitting unit is arranged to adjust a transmission direction of the synchronizing signal.

Abstract: A full-screen 3D image display device provides a dynamic liquid crystal parallax barrier device for solving a 3D image resolution deterioration problem caused by view separation of a multi-view 3D image displayed by a conventional parallax barrier, and achieves the purpose of displaying a multi-view 3D image with a full-screen image resolution through a multi-view image dynamic combination and display procedure and a barrier electrode dynamic driving procedure.

Abstract: There is provided a color-regulating device for illumination. The color-regulating device includes a light-valving structure for adjusting a flux ratio of outgoing light through the light-valving structure to incident light entering the light-valving structure, and a color-adjusting structure having a wavelength-band converting element for changing incident light with a wavelength band into outgoing light with a different wavelength band through the element. Wherein, the light-valving structure and the color-adjusting structure do not overlap on the traveling path of the light emitted from the light source. Mixing the outgoing light of the light source passing through the light-valving structure with the outgoing light of the light source passing through and at least a portion thereof converted by the color-adjusting structure with a different wavelength band yields a color-adjusted light of different color temperature from that of the light source.

Abstract: A display unit for binocular representation of a multicolor image including a control unit triggering an imaging element such that the imaging element generates in a temporal successive manner the image to be displayed for a first beam path and a second beam path as a first image and second image, respectively. The images are generated in a pre-distorted manner, opposite of the chromatic aberration of the respective beam path, such that the chromatic aberration generated in the respective beam path is compensated when the first and second image is displayed. The display unit includes a switching module which operates in temporal synchrony with the first and second image being generated, such that a user can see the first image only via the first beam path and the second image only via the second beam path.

Abstract: The purpose of the present invention is to provide a projection image display device in which all of the multiple light sources to be used are positioned optimally, regardless of the mode of installation of the device. This projection image display device has two illumination optical systems (1, 2) that are each provided with a light source (111, 211), a color separator for separating into three colors of light, a liquid crystal panel (150, 250) for forming an optical image, and a color synthesis prism (160, 260) for color-synthesizing. A polarization beam splitter (3) for synthesis synthesizes an optical image formed by the illumination optical system (1, 2), and projects the same from a projection lens (4). The optical axis (101, 201) of each light source (111, 211) is positioned within the same plane as the optical axis (401) of the projection lens (4), and so as to orthogonally intersect the optical axis (401) of the projection lens.

Abstract: A projection apparatus that provides flicker reduction according to the cause of flicker, to thereby properly reduce flicker without unnecessarily bringing about characteristic degradation is disclosed. Light for projecting a projection image onto a projection surface is output from a light source, and separated into light beams of a plurality of colors. Images corresponding to the light beams of the plurality of colors are formed on display units. The light beams of the plurality of colors having passed through the display units are synthesized and projected onto the projection surface. Fluctuations in the light quantity of the light beams of the plurality of colors having passed through the display units and yet to be input to the color synthesis unit are detected. Detection results are analyzed, and it is determined whether flicker caused by the display units or flicker caused by the light source is occurring in the projection image.

Abstract: A projector includes a polarization conversion system and a reflective polarizer. The polarization conversion system receives unpolarized light including first S-polarized light and first P-polarized light, wherein the first S-polarized light passes through the polarization conversion system, a part of the first P-polarized light is converted into second S-polarized light after passing through the polarization conversion system, and another part of the first P-polarized light remains unchanged after passing through the polarization conversion system. The reflective polarizer allows the first S-polarized light and the second S-polarized light to pass through and reflects the first P-polarized light back to the polarization conversion system.

Abstract: A projector includes: a lighting device that emits light of a plurality of different colors; a plurality of liquid crystal light valves that modulate the light of a plurality of colors; a color synthesizing optical system that synthesizes the color light modulated by the plurality of liquid crystal light valves; and a projection optical system that projects the light synthesized by the color synthesizing optical system to a projection target face. A cell thickness of one liquid crystal light valve modulating light of one color of the plurality of liquid crystal light valves is smaller than a cell thickness of the other liquid crystal light valves modulating the light of other colors, and an alignment state of liquid crystal at the time of applying the maximum gradation voltage is substantially the same in one liquid crystal light value and the other liquid crystal light valve.

Abstract: A projector apparatus utilizing wedge-type lens for projecting an image onto a surface, comprising a light source module for generating a single first light path; an illumination lens set for inputting the first light path and outputting a second light path; a reflection-type image generator for generating said image; a prism set for inputting said second light path and outputting the second light path onto the reflection-type image generator, wherein the reflection-type image generator reflects the second light path and forming a third light path carrying said image; an image projection lens set disposed on the third light path for projecting said image onto the surface, wherein the illumination lens set including a wedge-type lens working with the prism set for providing a suitable angle of incidence and angle of emission to the reflection-type image generator, the wedge-type lens lowers the required height difference, between the light axles of the illumination lens and the reflection-type image generator,

Abstract: A projection-type display apparatus, being suitable to be applied as a light source of a solid-state light source, in the place of a conventional lamp, comprises: a light source unit, which is configured to emit a white-color light therefrom; a light separation optic system, which is configured to separate the white color light from the light source unit into three primary color lights, red-color (R), green-color (G) and blue-color (B); R, G and B light modulating portions, each of which modulates each of R, G and B polarized lights separated, depending on a video signal, respectively; a light composing unit, which is configured to compose optical images, which are formed by the R, G and B light modulating portions; and a projecting portion, which is configure to project the optical image composed, enlargedly, wherein the light source unit emits a white color light emitting from a nearly point-like light source, including an excitation light from a solid-state light emitting element therein.

Abstract: A projector includes: a display device which modulates illumination light; a projection lens which projects modulation light produced by the display device; and a holding device which has a holder member supporting the display device, a frame member supporting the projection lens and functions as a base capable of supporting the holder member, and an expanding and contracting member disposed between the frame member and the display device, wherein a temperature coefficient for the expansion and contraction of the expanding and contracting member in the direction of the optical axis of the projection lens corresponds to a temperature coefficient for the increase and decrease of the focal distance of the projection lens.

Abstract: A naked-eye type stereoscopic display including a display panel, a polarization switching panel, and a lens array is provided. The display panel provides an image having a first polarization state. The polarization switching panel and the lens array are disposed on a propagation path of the image, and the polarization switching panel is located between the lens array and the display panel. In addition, the polarization switching panel has at least one rescue line so as to lower the scrap rate of the polarization switching panel.

Abstract: In one embodiment, a liquid crystal shutter includes a first liquid crystal panel for left eye and a second liquid crystal panel for right eye. Each liquid crystal panel includes a pair of electrode substrates and a liquid crystal layer held between the electrode substrates. A driving circuit switches the first and second liquid crystal panels between a transmissive state and a non-transmissive state by turns by applying a voltage to the first and second liquid crystal panels while inversing the polarity of the voltage applied between the pair of the electrode substrates at least once during a period in the transmissive state.

Abstract: A projector includes a light modulation unit including a liquid crystal device that modulates illumination light to form image light and a light exiting-side polarizer that causes the image light from the liquid crystal device to exit as linearly polarized light, a first retardation film that changes the polarization state of the image light from the light exiting-side polarizer into circular polarization or elliptical polarization, a polarization switching liquid crystal panel that switches the polarization state of the image light from the first retardation film in accordance with a control signal, a second retardation film that changes the polarization state of the image light from the polarization switching liquid crystal panel into linear polarization, and a birefringent substrate that selectively refracts a light component polarized in a direction corresponding to a specific switching state of the polarization switching liquid crystal panel among the image light from the second retardation film.

Abstract: A projector apparatus includes: a polarization beam splitter block assuming a shape of a rectangular parallelepiped that includes two end surfaces and four side surfaces; a light source opposed to one of the side surfaces; an illumination optical system disposed between the light source and the polarization beam splitter block, which converts illuminating light to substantially parallel light so that is directed to the polarization beam splitter block; a reflection-type liquid crystal display element opposed to an illuminating light output surface, through which an illuminating light undergone polarization separation is output, and that includes a rectangular display area through which the illuminating light is modulated to modulated light output to the polarization beam splitter block; and a projection optical system that forms a projection image with the modulated light undergone polarization separation, wherein: shorter borders of the rectangular display area is set parallel to the end surfaces.

Abstract: Proposed are various embodiments of projection systems that generally provide stereoscopic images. The projection systems act to split a spatially separated image in a stereoscopic image frame and superimpose the left- and right-eye images on a projection screen with orthogonal polarization states. The embodiments are generally well suited to liquid crystal polarization based projection systems and may use advanced polarization control.

Abstract: An image display device includes an image display element that displays images, a light blocking member that includes a light blocking portion blocking light from reaching a peripheral portion of the image display element, and a dust-proof member that is provided to surround the outer peripheries of the image display element and the light blocking portion such that the image display element and the light blocking portion positioned inside the dust-proof member have a dust-proof structure, wherein the light blocking member includes a heat dissipation portion which is integrally formed with the light blocking portion and which releases heat from the light blocking portion to the outside of the dust-proof member.

Abstract: A polarization controller adapted to output respective projection lights for a right-eye image and a left-eye image that are incident from a projector to a screen in different polarization directions, includes: a liquid crystal device adapted to change the polarization directions of the projection lights; and a controller adapted to control the liquid crystal device so that the respective projection lights for the right-eye image and the left-eye image have different polarization directions, wherein the controller performs control for mirror-reversing the polarization directions of the projection lights in the liquid crystal device according to a control signal indicating whether the projector performs mirror reversal of the right-eye image and the left-eye image, input from the projector.

Abstract: An illumination system includes a chip package, a first dichroic film, a second dichroic film, and a third dichroic film. The first dichroic film, the second dichroic film, and the third dichroic film are not parallel to each other and do not cross each other. The chip package includes a first light-emitting chip capable of emitting a first light beam, a second light-emitting chip capable of emitting a second light beam, and a third light-emitting chip capable of emitting a third light beam. The first light-emitting chip, the second light-emitting chip, and the third light-emitting chip are arranged in a row. The first dichroic film reflects the first light beam and transmitting the second light beam, the second dichroic film reflects the second light beam, the first dichroic film and the second dichroic film transmit the third light beam, and the third dichroic film reflects the third light beam.

Abstract: A method for manufacturing a stereoscopic display module including following steps is provided. A display module is provided. A first retardation film is attached on the display module with a heat-resisting adhesive layer. After attaching the first retardation film on the display module with the heat-resisting adhesive layer, a partial region of the first retardation film is heated to vanish a phase retardation property. The partial region includes a plurality of sub-regions spaced at intervals. A stereoscopic display module and a manufacturing system thereof are also provided.

Abstract: A scanning projector includes a MEMS device with a scanning mirror that sweeps a light beam in two dimensions. A laser limit comparison circuit determines a metric from measured peak scan angles and measured light output. The metric is compared to a threshold and a light source is shut down when the metric exceeds the threshold.

Abstract: A liquid crystal projector includes: an illumination system; a liquid crystal optical element; an inorganic polarizer arranged on the emission side of the liquid crystal optical element; and a projection system arranged on the emission side of the inorganic polarizer, the inorganic polarizer includes a substrate, a plurality of reflective layers arranged on the substrate, a dielectric layer formed on each reflective layer, and an inorganic particulate layer formed on the dielectric layer to be shifted in a first direction from a center line that bisects the corresponding reflective layer in a short-side direction, at least one of a optical axis of the illumination system and a optical axis of the projection system is shifted with respect to a center axis of the liquid crystal optical element.

Abstract: An anti-reflective thin film coating formed on an optical surface, comprising a multilayer thin-film stack arranged to suppress reflection of incident polarized light within an incident light wavelength range. The multilayer thin-film stack further provides a reflectance edge transition at a wavelength band that lies outside the incident light wavelength range. The reflectance edge transition is arranged to provide phase difference compensation to the polarized light within the incident polarized light wavelength range.

Abstract: A projection system having a first tilting mirror matrix, a second tilting mirror matrix, and an imaging lens, which projects the first tilting mirror matrix onto the second tilting mirror matrix, wherein each tilting mirror matrix has multiple tilting mirrors, the tilting axes of which are positioned in a modulator surface plane. The imaging lens includes a first lens and an imaging mirror, and the imaging mirror forms an aperture stop of the imaging lens, wherein the aperture diaphragm includes an uneven angle of 90° together with the normal of the modulator surface of the first tilting mirror matrix without taking into account any optical path folds.

Abstract: A system is provided projecting a three-dimensional image. The system includes a first light source, the first light source emitting light in a first direction. A second light source is provided, the second light source emitting light in a second direction, the second direction being opposite the first direction. A beam splitter device is disposed between the first light source and the second light source to receive light from the first light source and the second light source, the beam splitter device being arranged to rotate about an axis. An LCoS image device is disposed adjacent the beam splitter device, the LCoS image device having an image surface arranged substantially perpendicular to the first direction and the second direction.

Abstract: A method of projecting a three-dimensional image is provided. The method includes providing a first light source, the first light source emitting light at a first polarization. A second light source is provided opposite the first light source, the second light source emitting light at a second polarization. A liquid crystal on silicone (LCoS) image device is provided. A beam splitter device is provided between the first light source and the second light source adjacent the LCoS image device. The beam splitter device is rotated. A first light is emitted from the first light source. The first light is reflected with the beam splitter device onto the LCoS image device. A second light is emitted from the second light source after the first light is emitted. The second light is reflected with the beam splitter device onto the LCoS image device.

Abstract: This optical component adjustment mechanism includes support frame 21 for supporting optical compensator 11, optical compensator support 20 having first and second rotary salients 22, 23 projecting outside from support frame 21 in a predetermined axis, holder support frame 31 for rotatably supporting first and second rotary salients 22, 23, setscrew 37 for fixing rotation of optical compensator support 20, and bracket 40.

Abstract: A polarizing element includes a substrate with protruded threads, and metal thin wires provided on the protruded threads. Each metal thin wire includes a first thin wire provided to a first side surface of the protruded thread and a second thin wire provided to a second side surface of the protruded thread. Each first thin wire has a first volume. Each second thin wire has a second volume. Each metal thin wire has a third volume which is the sum of the first and second volumes. As a distance from one end of the substrate increases, the volume of each first thin wire decreases and the volume of each second thin wire increases so that the third volume is maintained within a predetermined range.

Abstract: A display system includes: a screen in which, in an area on which invisible light is incident, a scattering state where visible light is scattered and a transmission state where visible light is transmitted are switched; an image projection system to project an image of the visible light onto the screen; and an invisible light projection system to project the invisible light onto the screen and to cause an area of the screen onto which a desired portion of the image is projected to have the scattering state.

Abstract: An image displacement module includes a base, a carrier, an optical element, a freely rotating shaft, a flexible shaft, and at least one actuator. The optical element is disposed on the carrier. The freely rotating shaft and the flexible shaft are in a same axis and located between the base and the carrier. The flexible shaft is capable of acting a force on the carrier along the axis, and the carrier is capable of moving along the freely rotating shaft relative to the base to release the force. The actuator is disposed between the base and the carrier. When the actuator drives the carrier to rotate in the axis relative to the base, the flexible shaft generates an elastic torsion. When the actuator does not drive the carrier to rotate in the axis relative to the base, the flexible shaft drives the carrier to reposition relative to the base.

Abstract: The disclosure generally relates to color combiners, and in particular color combiners useful in small size format projectors such as pocket projectors. The disclosed color combiners include a tilted dichroic plate having at least two reflectors configured with light collection optics to combine at least two colors of light.

Abstract: Provided is a projector capable of suppressing deterioration of a portion of a projection portion irradiated with a laser beam while improving brightness. This projector is formed to deviate optical axes of laser beams emitted from a plurality of laser beam generation portions respectively from each other so that the laser beams emitted from the plurality of laser beam generation portions respectively do not concentrate on one point of a projection portion.

Abstract: A polarizing element includes a substrate; a plurality of protruded threads formed on one of surfaces of the substrate in a rough stripe pattern when viewed two-dimensionally, each of the protruded threads having a side surface forming a slope inclined with respect to the one surface of the substrate; a plurality of metal thin wires each formed on the slope of the each protruded thread so as to be cantilever-supported by the slope and each extended in an extension direction of the protruded thread; and a protection film covering the protruded threads and the metal thin wires.

Abstract: An illumination apparatus includes a light source, a polarization splitter disposed facing the light source at about 45 degrees with respect to its light emission direction, a first reflector reflecting and condensing one of the polarization light components polarized and split by the polarization splitter, a quarter wave plate disposed between the polarization splitter and the first reflector, a second reflector reflecting and condensing the other of the polarization light components polarized and split by the polarization splitter, a third reflector disposed around the light source and reflecting the other polarization light reflected by the second reflector and the polarization splitter and proceeding in the light source direction, and a quarter wave plate disposed between the polarization splitter and the third reflector and around the light source, the light reflected at the first reflector and reflected at the polarization splitter being used to illuminate a predetermined surface.

Abstract: Proposed are various embodiments of projection systems that generally provide stereoscopic images. The projection systems act to split a spatially separated image in a stereoscopic image frame and superimpose the left- and right-eye images on a projection screen with orthogonal polarization states. The embodiments are generally well suited to liquid crystal polarization based projection systems and may use advanced polarization control.

Abstract: The present invention relates to a light modulating device, comprising a SLM and a pixelated optical element, in which a group of at least two adjacent pixels of the SLM in combination with a corresponding group of pixels in the pixelated optical element form a macropixel, the pixelated optical element being of a type such that its pixels comprise a fixed content, each macropixel being used to represent a numerical value which is manifested physically by the states of the pixels of the SLM and the content of the pixels of the pixelated optical element which form the macropixel.

Abstract: A projector includes an illumination device that emits an illumination light flux, a color-separating optical system that separates light from the illumination device into plural color lights and directs the color lights to an illuminated area, and a plurality of liquid crystal light valves that have liquid crystal panels. The crystal light valves are configured to maximize light utilization efficiency.

Abstract: Projection systems and methods for providing stereoscopic images viewed through passive polarizing eyewear. The systems relate to projectors that create left and right eye images simultaneously and often as side-by-side images on the image modulator. The systems act to superimpose the spatially separated images on a projection screen with alternate polarization states. The embodiments are best suited to liquid crystal polarization based projection systems and use advanced polarization control.