Entries |
Document | Title | Date |
20080198334 | Image Projector - An image projector realizing image projection with high image quality by reducing speckle noise. An image projector comprising a coherent light source, a collimation lens for transforming coherent light emitted from the coherent light source into coherent parallel light, and a projection optical system for projecting coherent parallel light is further provided with a reflection element for reflecting the coherent parallel light and capable of oscillating in parallel with the direction normal to the reflection plane, and a reflection element drive means for causing oscillatory motion of the reflection element. | 08-21-2008 |
20080204667 | PROJECTION DISPLAY AND LIGHTING UNIT - A lighting unit that optimizes an oscillation frequency for oscillating a diffusion device and its amplitude amount and a projecting display using the lighting unit are provided. Driving of a light source driving unit is controlled on the basis of driving of the oscillation driving unit. | 08-28-2008 |
20080259287 | PROJECTION APPARATUS - A projection apparatus includes a prism set, a light source, a reflective element, a light valve and a projection lens. The prism set includes a first prism having a first surface, a second surface and a third surface, and a second prism having a fourth surface opposite to the second surface, a fifth surface and a sixth surface. The reflective element, light valve and projection lens are respectively disposed adjacent to the third, fifth and sixth surfaces. The light source emits an illumination beam to the first surface. The illumination beam is reflected by the second surface and the reflective element. The illumination beam passes through the third, second, fourth and fifth surfaces in sequence. The illumination beam is converted by the light valve into an image beam which is reflected by the fourth surface and passes through the sixth surface to the projection lens in sequence. | 10-23-2008 |
20080266527 | PROJECTOR - A reduced product height/thickness projector includes an illuminator, an electro-optic modulator, a projection system, a collector lens, and associated housing. The illuminator including a light source that emits an illumination light flux, a first lens array having a plurality of first lenslets that divide the illumination light flux from the light source into a plurality of sub-light fluxes, a second lens array having a plurality of second lenslets corresponding to the plurality of first lenslets, and a superimposing lens that superimposes the sub-light fluxes from the second lens array on an illuminated area. The central axis of the image formation area of the electro-optic modulator and the lens optical axis of the superimposing lens is shifted from the light source optical axis of the light source. The lens optical axis of the collector lens is shifted opposite from the central axis of the image formation area of the electro-optic modulator. | 10-30-2008 |
20080278692 | Method Liquefaction of Starchcontaining Material - The present invention relates to a laser projection system ( | 11-13-2008 |
20080278693 | ILLUMINATION OPTICAL SYSTEM AND IMAGE PROJECTION DEVICE - An illumination optical system has: a light source, a diffusion member, and a rod integrator, and illuminates an image display surface of a display element. The light source emits an illumination beam having a flat cross section. The diffusion member isotropically diffuses the illumination beam. The rod integrator uniformizes spatial energy distribution of the illumination beam put into a diffused state by the diffusion member. | 11-13-2008 |
20080304019 | PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION APPARATUS, AND IMAGE PROJECTION APPARATUS - A projection optical system for use in an image projection apparatus illuminating a lightbulb forming an image in accordance with a modulating signal with illumination light from a light source is disclosed. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the lightbulb. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the lightbulb is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected. | 12-11-2008 |
20090021700 | ILLUMINATION DEVICE, PROJECTION VIDEO DISPLAY DEVICE, AND FLY-EYE LENS - An illumination device includes a light source for emitting a light flux having a solid angle; an optical element for converging the light from the light source in at least one direction to convert the light into parallel light; and a fly-eye lens for allowing incidence of the parallel light from the optical element to guide uniform light to an area for illumination. Assuming that a certain number of lens cells in the fly-eye lens in a column direction or a row direction are defined as a lens cell unit, one of the lens cell units is relatively displaced with respect to the other one of the lens cell units in the column direction or the row direction, and the number of steps for displacement among the lens cell units in the fly-eye lens is set to 2 or more. | 01-22-2009 |
20090040467 | PROJECTOR AND PROJECTION UNIT - A projector includes: a light source which emits light; an image forming unit which forms an image having desired size by using light emitted from the light source; and a projection unit which projects the image formed by the image forming unit on a light receiving surface. The projection unit has a light diffusing member disposed at a position where an intermediate image corresponding to light released from the image forming unit is formed to diffuse the light, and a projection system which projects the light diffused by the light diffusing member on the light receiving surface. Diffusion intensity distribution of light released from a predetermined position of the light diffusing member contains at least two prominences with the center axis of the light interposed between the prominences. | 02-12-2009 |
20090059177 | ILLUMINATION DEVICE AND PROJECTION DISPLAY DEVICE - An illumination device includes a light source part for emitting light with an intensity distribution approximately uniform in a first direction and a fly-eye lens into which the light is entered. The light source part and the fly-eye lens are arranged such that the first direction is inclined with respect to vertical and horizontal directions of arrangement of lens cells in the fly-eye lens. Since illumination light is entered into the fly-eye lens in a state of inclining with respect to the fly-eye lens, the number of superimposition patterns on the fly-eye lens is increased and illuminance non-uniformity in illumination light is suppressed. | 03-05-2009 |
20090086170 | Quantum Photonic Imagers and Methods of Fabrication Thereof - Emissive quantum photonic imagers comprised of a spatial array of digitally addressable multicolor pixels. Each pixel is a vertical stack of multiple semiconductor laser diodes, each of which can generate laser light of a different color. Within each multicolor pixel, the light generated from the stack of diodes is emitted perpendicular to the plane of the imager device via a plurality of vertical waveguides that are coupled to the optical confinement regions of each of the multiple laser diodes comprising the imager device. Each of the laser diodes comprising a single pixel is individually addressable, enabling each pixel to simultaneously emit any combination of the colors associated with the laser diodes at any required on/off duty cycle for each color. Each individual multicolor pixel can simultaneously emit the required colors and brightness values by controlling the on/off duty cycles of their respective laser diodes. | 04-02-2009 |
20090115970 | HIGH EFFICIENCY COMPACT OLED MICRODISPLAY PROJECTION ENGINE - A compact micro-display engine having improved efficiency for, e.g., projection displays or personal displays. It includes an emissive micro-display without the need for external illumination, a collimation optic plate on top of micro-display and a low F/# projection optics after the collimation optic plate. The collimation optical plate may be a micro-structure lenses array or a collimation prism film, and is used to collimate wide divergent light from the emissive micro-display device into a small cone angle light which will be efficiently collected by the projection optics. A reflective mirror is deposited on the top of substrate and underneath the light emitting layer for recycling the reflected back light from the collimation optic plate. The compact micro-display projection engine controls the divergence angle of the emitted light, and provides the controlled light to the objective plane of a projection optics subsystem. | 05-07-2009 |
20090122267 | PROJECTION OPTICAL SYSTEM - A projection optical system includes a grating configured for splitting a light input into red, green and blue lights for generating red, green and blue lights of mutually different colors, a liquid crystal panel positioned to receive light outputs from the grating and configured for superimposing spatial information on the light outputs and emitting the light outputs comprising spatial information. The above-described projection optical system improves image contrast, and is suitable for use in adverse thermal environments. The projection optical system utilizes coupling of the grating and the liquid crystal panel to the projecting lens to achieve good image quality, without requiring costly, high index, low birefringence glass. | 05-14-2009 |
20090185141 | DIFFUSER CONFIGURATION FOR AN IMAGE PROJECTOR - According to one embodiment, an image projector has a spatial light modulator (SLM) adapted to modulate illumination from a laser with a spatial pattern such that the modulated illumination projects an image on a viewing screen. The image projector further has an optical diffuser located on an optical path between the laser and the SLM. The laser is adapted to illuminate the SLM through the optical diffuser to create an illuminated area at the SLM. The optical diffuser is adapted to introduce an angular spread into the light transmitted therethrough. The image projector is adapted to move the illuminated area with respect to the SLM to mitigate speckle in the projected image. | 07-23-2009 |
20090213338 | ILLUMINATION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS MAKING USE THEREOF - An illumination optical system for illuminating a surface to be illuminated with a light beam from a light source, in a first plane which is parallel with the optical axis of the illumination optical system, the light beam from the light source is split, and a plurality of first light source images are formed in a first light source image zone with the use of the thus split light beams; light beams from the plurality of first light source images being led to the surface to be illuminated, in a second plane which is parallel with the optical axis of the illumination optical system and which is perpendicular to the first plane, the light beam from the light source is split, and a plurality of second light source images are formed in a second light source image zone, with the use of the thus split light beams, light beams from the plurality of second light source images being led to the surface to be illuminated, where the width of the first light source image zone in the first plane is greater than that of the second light source image zone in the second plane. | 08-27-2009 |
20090251669 | SIMULATED FIRE APPARATUS - Apparatus for simulating a solid fuel flame includes a frame within which is mounted a screen. An enclosure is provided below the screen having a transparent glass refractor member forming a top wall of the enclosure. The refractor member comprises a number of juxtaposed shaped refractor bodies arranged in an edge to edge array on a carrier plate. A cylindrical container is rotatably mounted within the enclosure. A motor rotates the container on a support. The container is partially filled with a red or brown coloured liquid. Lamps within the enclosure are operable to shine light through the coloured liquid in the container and through the refractor member onto the screen. Movement of the coloured liquid, which may be enhanced by internal projections in the container, causes flickering of the light projected onto the screen to give a flame effect simulating a solid fuel fire. | 10-08-2009 |
20090268169 | Overhead projection screen - An optical plate, in particular in a screen for projection display device, comprises, on a first side, optical elements designed to bend rays received from a light source into a beam of rays in a first direction in a plane containing a main axis. The second side is produced in such a way as to bend the beam in a second direction that is different from the first direction, preferably in line with the main axis. | 10-29-2009 |
20090273760 | ILLUMINATION APPARATUS, PROJECTOR, AND ILLUMINATION METHOD - A projector includes an illumination optical system, a light modulation element, and a projection optical system. The illumination optical system includes a first light source section, a plurality of second light source sections, and an optical axis conversion element. The optical axis conversion element emits the light beam, which is input from the first light source section, so that an exit optical axis of the light beam approximately matches with an illumination optical axis, and emits the light beams, which are respectively input from the plurality of second light source sections, so that exit optical axes of the light beams intersect the exit optical axis of the light beam from the first light source section between the optical axis conversion element and the light modulation element. | 11-05-2009 |
20090310087 | PROJECTION DISPLAY DEVICE, AND SPECKLE REDUCTION ELEMENT - An object of the invention is to miniaturize a projection display device, enhance reliability of the device, and reduce speckle noise. A blue laser ( | 12-17-2009 |
20090323030 | PROJECTION APPARATUS AND IMAGE DISPLAY APPARATUS - There is provided a high-reliability projection apparatus, causing no noise during switching of the optical paths of individual color lights. The apparatus includes a three-color light source | 12-31-2009 |
20100020291 | 2-DIMENSIONAL IMAGE DISPLAY DEVICE, ILLUMINATION LIGHT SOURCE AND EXPOSURE ILLUMINATION DEVICE - A 2-dimensional beam scan unit ( | 01-28-2010 |
20100020292 | PORTABLE TRANSMISSIVE TYPE PROJECTOR - An exemplary portable transmissive type projector includes a light source module configured for emitting light beams, a projection lens module, and a transmission type liquid crystal panel. The liquid crystal panel is disposed between the light source module and the projection lens module and configured for displaying images. The projection lens module is configured for projecting the displayed images illuminated by the light beams onto an external object for viewing. | 01-28-2010 |
20100033686 | PROJECTION-TYPE DISPLAY APPARATUS - An image formed on a reflecting optical modulator is magnified by a projection optical system and projected on a backside of a transmission-type screen. The projection optical system is constituted so that a product of an F-number and a projection magnification of the projection optical system is less than 400. | 02-11-2010 |
20100053565 | LASER ILLUMINATING DEVICE AND IMAGE DISPLAY DEVICE - An object of the invention is to provide a laser illuminating device and an image display device that enable to remove speckle noises in a diffraction field and an image field, uniformly illuminate an illumination plane, and realize miniaturization. A laser illuminating device | 03-04-2010 |
20100073640 | PROJECTION TYPE DISPLAY APPARATUS FOR DISPLAYING AN IMAGE - The present invention provides a projection type display apparatus for displaying an image by which reduction of contrast is suppressed, including: a light source; a first lens array and a second lens array having a plurality of lens cell areas; a collecting lens; a display element; a projection lens; and a light shielding unit which light-shields the light fluxes from the first lens array to the second lens array, wherein the light shielding unit light-shields at least parts of all the lens cell areas except for the lens cell area in contact with an optical axis among a plurality of rectangular lens cell areas of the second lens array, and a light shielding area in the lens cell area in contact with the optical axis is smaller than that in any of the lens cell areas except for the lens cell area in contact with the optical axis. | 03-25-2010 |
20100073641 | DISPLAY DEVICE - A liquid crystal display is provided having improved image quality and visibility. The display device includes: a plurality of display panels which display multiple images from multiple display panels; a projection film which overlaps the display panels; and a lens panel including a first lens unit and a second lens unit is interposed between the display panel and the projection film. The first lens unit refracts images and the second lens unit improves image brightness. Therefore the resultant projection is a seamlessly connected image from the multiple display panels. | 03-25-2010 |
20100091250 | LIGHT UNIFORM DEVICE AND DLP PROJECTION SYSTEM COMPRISING THE SAME - The invention provides a light uniform device and a digital light processing (DLP) projection system applying the said light uniform device. The light uniform device comprises a light incident surface, a light emergent surface and a light uniform portion defined therebetween. The light incident surface and the light emergent surface have a first contour and a second contour, respectively. And a first projection image of the second contour that is projected onto a projection plane forms a rotational angle about a longitudinal axial direction corresponding to a second projection image of the first contour projected onto the projection plane. Thereby, the light sources may simply be disposed in the projection system to provide uniform light beams that entirely cover the DMD (digital micromirror device) after being uniformed by the light uniform device. Neither of the light sources need to be inclined following with the DMD, nor is additional relay lens needed in imaging. | 04-15-2010 |
20100103381 | Image Projection System for Reducing Spectral Interference - An image projection system having a first light emitting diode subsystem configured to generate a first source beam having a first spectral range in a first polarized state and a second light emitting diode subsystem configured to generate a second source beam having a second spectral range overlapping the first spectral range is provided. The second source beam may be provided in a second polarized state orthogonal to the first polarized state of the first source beam. The image projection system may further include an x-cube prism configured to receive the first source beam and the second source beam and combine the first source beam and the second source beam to form a common output beam. | 04-29-2010 |
20100118278 | DIFFUSER DRIVING DEVICE AND PROJECTION-TYPE IMAGE DISPLAY APPARATUS - A diffuser driving device includes: a moving frame mounted with a diffuser; a supporting frame movably supporting the moving frame; a drive unit driving the moving frame to vibrate in a first direction perpendicular to an optical axis of an image beam incident on the diffuser and a second direction perpendicular to the first direction and the optical axis; and a controller controlling the drive unit to change a phase difference between the vibration of the moving frame in the first direction and the vibration of the moving frame in the second direction and to move the moving frame at a moving speed higher than a predetermined value. | 05-13-2010 |
20100141898 | PROJECTION UNIT HAVING SPECKLE SUPPRESSION DEVICE BASED ON PIEZOELECTRIC ACTUATING - A projection unit comprising a coherent light source such as a laser diode and a beam shaping element forming a light beam which is directed towards a display, characterized in that it comprises a laser speckle suppression device which is positioned between the laser source and the display and wherein the laser speckle suppression device is a diffusing element actuated randomly by a piezoelectric vibrating structure. | 06-10-2010 |
20100165301 | PROJECTION-TYPE DISPLAY APPARATUS - A projection-type display apparatus that projects an image on a screen and performs image display includes at least one laser source that emits a coherent light beam, an illuminating optics that propagates the light beam emitted from the laser source into a predetermined optical path to guide the light beam to the screen, a reflective optical modulator that forms the image to be displayed on the screen on an illuminated surface illuminated by the light beam guided by the illuminating optics, and a projection optics that magnifies and projects the image formed on the illuminated surface of the reflective optical modulator on the screen. The illuminating optics includes a diffusion device, which diffuses the propagated light beam, and is arranged on a light propagation path near a conjugated position with the reflective optical modulator. | 07-01-2010 |
20100171934 | LENS ARRAY ELEMENT AND PROJECTION TYPE DISPLAY DEVICE - A lens array element has a rectangular plate-like external shape, and includes plate surfaces that functions as light transmission surfaces; and a plurality of cellular lenses that are formed on at least one of the plate surfaces. Each of end faces | 07-08-2010 |
20100182574 | System and Method for Reducing the Effect of an Image Artifact - In accordance with the teachings of the present disclosure, a system and method for displaying an image are provided. In one embodiment, the method includes receiving a laser through a rotary diffuser. The rotational speed of the rotary diffuser may be continuously varied to reduce the effect of an image artifact in a light pattern. The image artifact may be caused by an imperfection in the rotary diffuser. The light pattern is projected on a display device. | 07-22-2010 |
20100208214 | PROJECTOR - A projector includes: an illuminating device including a light source device, a first lens array that comprises first regions located at four corners in the first lens array when viewed along a system optical axis and second regions located between the two first regions, and a second lens array; a light modulating device; a projection optical system; a light control device; and a mode selection device. The light control device blocks part of the plural partial light beams by causing first and second light shields to integrally operate, when the brightness priority mode is selected. The light control device always blocks part of the partial light beams with the first light shields and blocks part of the partial light beams by causing the second light shields to operate independently from the first light shields. | 08-19-2010 |
20100214538 | OPTICAL UNIT AND PROJECTION DISPLAY DEVICE - An optical unit ( | 08-26-2010 |
20100220299 | IMAGE DISPLAY DEVICE - An image display device is provided with an image display unit for displaying an image visually recognizable by a viewer. The image display unit includes a sub-diffusion layer for diffusing laser light, a vibrator for vibrating the sub-diffusion layer, a primary diffusion layer for diffusing the laser light diffused by the sub-diffusion layer and a light shielding layer for cutting off outside light from a viewer side, wherein the primary diffusion layer and the light shielding layer are arranged at the viewer side of the sub-diffusion layer. | 09-02-2010 |
20100238414 | Visual display device - A visual display device includes an image display element | 09-23-2010 |
20100245776 | LIGHT SOURCE UNIT UTILIZING LASER FOR LIGHT SOURCE AND PROJECTOR - A projector including a light source unit, a display device and a projector control means, wherein the light source unit includes a fluorescent plate | 09-30-2010 |
20100245777 | LIGHT SOURCE UNIT UTILIZING LASER FOR LIGHT SOURCE AND PROJECTOR - A projector includes a light source unit | 09-30-2010 |
20100271598 | Projection display device - A projection display device which displays an image by projecting the image on a screen includes a laser light source for emitting coherent light, a display device for forming an image to be displayed on a screen in an area illuminated by a luminous flux from the laser light source, a first diffusion plate for diffusing a luminous flux, and a second diffusion plate for diffusing a luminous flux. The first diffusion plate is provided in at least one of a conjugate position of the laser light source or the vicinity of the conjugate position in the optical path of the optical system including the laser light source through the screen. The second diffusion plate is provided in at least one of a conjugate position of the display device and the vicinity of the conjugate position. | 10-28-2010 |
20100271599 | Projection display device - A projection display device which displays an image by projecting the image on a screen includes a laser light source | 10-28-2010 |
20100296063 | PROJECTION WITH LARGER INTERMEDIATE IMAGE - In a coherent light projection system including an image forming system, a relay system, a speckle reduction element, and a projection subsystem, the relay system can have a first f-number, and the projection subsystem can have a second f-number less than the first f-number. The relay system can have a first working distance, and the projection subsystem can have a second working distance less than the first working distance. The image forming system can project an initial image having a first size, and an intermediate image can have a second size greater than or equal to the first size. The speckle reduction element can have a curved surface through which the intermediate image is transferred. The speckle reduction element can include a lenslet arrangement formed on a surface thereof. The speckle reduction element can be moved in a direction parallel to an optical axis of the speckle reduction element. | 11-25-2010 |
20100296064 | PROJECTION WITH LENSLET ARRANGEMENT ON SPECKLE REDUCTION ELEMENT - In a coherent light projection system including an image forming system, a relay system, a speckle reduction element, and a projection subsystem, the relay system can have a first f-number, and the projection subsystem can have a second f-number less than the first f-number. The relay system can have a first working distance, and the projection subsystem can have a second working distance less than the first working distance. The image forming system can project an initial image having a first size, and an intermediate image can have a second size greater than or equal to the first size. The speckle reduction element can have a curved surface through which the intermediate image is transferred. The speckle reduction element can include a lenslet arrangement formed on a surface thereof. The speckle reduction element can be moved in a direction parallel to an optical axis of the speckle reduction element. | 11-25-2010 |
20100296065 | OUT-OF-PLANE MOTION OF SPECKLE REDUCTION ELEMENT - In a coherent light projection system including an image forming system, a relay system, a speckle reduction element, and a projection subsystem, the relay system can have a first f-number, and the projection subsystem can have a second f-number less than the first f-number. The relay system can have a first working distance, and the projection subsystem can have a second working distance less than the first working distance. The image forming system can project an initial image having a first size, and an intermediate image can have a second size greater than or equal to the first size. The speckle reduction element can have a curved surface through which the intermediate image is transferred. The speckle reduction element can include a lenslet arrangement formed on a surface thereof. The speckle reduction element can be moved in a direction parallel to an optical axis of the speckle reduction element. | 11-25-2010 |
20100328618 | REAR SURFACE PROJECTION TYPE IMAGE DISPLAY DEVICE - A rear projection type image display apparatus having a larger half-power angle and being capable of properly blocking a direct light from a projector for an observer is provided. | 12-30-2010 |
20110013149 | Projection-type image display apparatus - A projection-type image display apparatus that enlarges and displays an image includes: a case, a laser light source, a cooling mechanism that includes a component that produces vibration during operation, a diffuser that diffuses light that is emitted from the laser light source, optics that shape light diffused by the diffuser to light having a uniform luminance distribution and rectangular cross-section, and an optical modulation element that modulates light shaped by the optics; wherein the component included in the cooling mechanism and the diffuser are connected by way of a vibration transmitting member. | 01-20-2011 |
20110037953 | MICRO-PROJECTOR - The present invention provides a projection display comprising an illumination system comprising at least one laser source unit and configured and operable for producing one or more light beams; a spatial light modulating (SLM) system accommodated at output of the illumination system and comprising one or more SLM units for modulating light incident thereon in accordance with image data; and a light projection optics for imaging modulated light onto a projection surface. The illumination system comprises at least one beam shaping unit comprising a Dual Micro-lens Array (DMLA) arrangement formed by front and rear micro-lens arrays (MLA) located in front and rear parallel planes spaced-apart along an optical path of light propagating towards the SLM unit, the DMLA arrangement being configured such that each lenslet of the DMLA directs light incident thereon onto the entire active surface of the SLM unit, each lenslet having a geometrical aspect ratio corresponding to an aspect ratio of said active surface of the SLM unit. | 02-17-2011 |
20110043768 | IMAGE DISPLAY APPARATUS - An image display apparatus ( | 02-24-2011 |
20110075108 | PROJECTION DISPLAY DEVICE - A projection display device that displays an image by projecting the image onto a transmissive screen from the rear thereof includes: an illumination optical system for guiding a light beam emitted from a laser light source to the transmissive screen; a projection optical system for enlarging an image formed on a region to be illuminated of an image display element, and projecting the enlarged image on the transmissive screen, the projection optical system being configured such that the product of the F-number and the projection magnification of the projection optical system is less than 400; wherein the transmissive screen includes a Fresnel lens and a lenticular lens respectively equipped with a light diffusion layer for diffusing incident light and causing resultant light to exit the light diffusion layer. The light diffusion layer of the lenticular lens has a thickness of less than 300 μm. | 03-31-2011 |
20110085145 | PROJECTOR - A projector includes: first and second light blocking members adapted to partially block a light beam from a light source, and a drive section adapted to make the first and second light blocking members perform an opening and closing operation. When the corresponding first and second light blocking members are located at a maximum blocking state, with respect to an opening and closing direction of the first and second light blocking members perpendicular to a system optical axis, a first and second support sections support the first and second light blocking members at predetermined positions on the system optical axis side from intermediate positions corresponding to midpoints of areas between edge portions of the first and second light blocking members on the system optical axis side and parts, to which outer edges of the light beam to be blocked are input. | 04-14-2011 |
20110090468 | LENS ARRAY SET AND PROJECTION APPARATUS - A lens array set for a projection apparatus is provided. The lens array set comprises a first lens array and a second lens array. The first lens array has a plurality of first lens units which are rectangle-shaped and a side thereof that defines the first direction. The second lens array, which is parallel with the first lens array, has a plurality of second lens units which has a rectangle shape and a side thereof that defines the second direction. Each of the second lens units is set correspondingly to each of the first lens units, and the center of each second lens unit and the center of each first lens unit are coaxial. A rotation angle is substantially defined between the first direction and the second direction depending on the difference between the rectangle shapes of the first and the second lens units. When adopting the present invention in the projection apparatus, the light source efficiently provides light for the micro-display. | 04-21-2011 |
20110102748 | OPTICAL SYSTEM AND METHOD - An optical system ( | 05-05-2011 |
20110149251 | Diffractive Optical Element Having Periodically Repeating Phase Mask and System for Reducing Perceived Speckle - A optical apparatus ( | 06-23-2011 |
20110157559 | Visual display apparatus - The invention provides a visual display apparatus | 06-30-2011 |
20110211169 | Projection System - A projection system includes an opto-electromechanical component for speckle reduction, the opto-electromechanical component comprising a micro-motor having a shaft and a translucent light-diffusing element fixed to the shaft. | 09-01-2011 |
20110228233 | PROJECTION DISPLAY DEVICE - A projection display device includes a light source, an optical intensity-equalizing element, an optical modulating element, an optical diffusion element, a relay optical system that is configured such that an output end of the optical intensity-equalizing element and a display element plane of the optical modulating element are optically conjugate, and a projection optical system. The relay optical system includes a first lens unit that condenses a light from the optical intensity-equalizing element and a second lens unit that further condenses a light from the first lens unit. The optical diffusion element is arranged between an light incident side of the first lens unit and the optical intensity-equalizing element. An optical axis of the second lens unit and a center of the output end of the optical intensity-equalizing element are shifted in a same direction from an optical axis of the first lens unit. | 09-22-2011 |
20110234985 | DESPECKLING LASER-IMAGE-PROJECTION SYSTEM - An optical device for projecting an image is disclosed. In one embodiment, the optical device includes a configurable optical diffuser adapted to produce a diffuse optical beam having a temporally varying pattern of angular divergence. The optical device further includes a plurality of lenslet pairs to shape the diffuse optical beam and a spatial light modulator to spatially modulate the shaped optical beam to project an image. | 09-29-2011 |
20110261327 | TRANSMISSION TYPE SCREEN, IMAGE DISPLAY METHOD FOR TRANSMISSION TYPE SCREEN, AND PROJECTION DISPLAY APPARATUS - The transmission type screen includes: a Fresnel lens screen ( | 10-27-2011 |
20110273673 | DIFFUSING SCREEN - Various embodiments related to a rear projection display screen configured to reduce an intensity of light at a viewing angle at which the light is less likely to be viewed by a user are disclosed. One disclosed embodiment provides a diffusing screen comprising a sheet-like structure transparent to one or more wavelengths of light. The sheet-like structure has a viewing surface and comprises a diffusing pattern configured to create destructive interference of a selected wavelength of light traveling in a direction normal to a plane of the viewing surface of the screen. | 11-10-2011 |
20110299039 | PROJECTION TYPE IMAGE DISPLAY APPARATUS - A projection type image display apparatus in which shortening of the projection distance (widening of the angle of view) and miniaturization of the projection optic system are realized is provided. It comprises, in a traveling direction of the light, an image display element, a lens group including a plurality of lenses, a first lens, a second lens, and a mirror to reflect light emitted from the second lens to be projected obliquely on a screen in this order. The refractive power of the first lens is positive and the refractive power of the second lens is negative. The first and the second lenses are moved in an interlocked relationship with each other along an optical axis of the lens group and a movement amount of the first lens is made larger than a movement amount of the second lens. | 12-08-2011 |
20110310358 | LIGHT CONTROL APPARATUS AND PROJECTOR - A light control apparatus that controls the amount of light passing therethrough by blocking part of an incident light flux, includes: a pair of pivotal members having pivotal axes extending along a direction substantially perpendicular to a central axis of the light flux; and a pair of light blocking members held by the pair of pivotal members and changing the size of a light blocking area as the pair of pivotal members pivot, the light blocking area blocking part of the light flux, wherein the pivotal axes are located in positions that overlap with an area where the light flux passes, and the pair of light blocking members are located in positions that do not overlap with the pivotal axes. | 12-22-2011 |
20120075593 | LENS ARRAY MODULE AND PROJECTION APPARATUS - A lens array module includes a light incident surface, a light emitting surface opposite to the light incident surface, and a plurality of first and second lens surfaces. The first lens surfaces are arranged on the light incident surface to form into an array. The second lens surfaces are arranged on the light emitting surface to form into an array. The center of curvature of each of the first lens surfaces located at two opposite sides of a first reference point on the light incident surface deviates away from the first reference point in a direction parallel to a first reference axis, and the center of curvature of each of the second lens surfaces located at two opposite sides of a second reference point on the light emitting surface deviates toward the second reference point in a direction parallel to the first reference axis. A projection apparatus is also provided. | 03-29-2012 |
20120075594 | PROJECTION APPARATUS AND ILLUMINATION SYSTEM - A projection apparatus including a light source, a light uniforming and shaping module, and a light valve is provided. The light source has a light-emitting surface and is capable of emitting an illumination beam. The light uniforming and shaping module is disposed on a transmission path of the illumination beam. The light valve is disposed on a projection surface and on the transmission path of the illumination beam from the light uniforming and shaping module, wherein the light valve is capable of converting the illumination beam into an image beam. The light uniforming and shaping module is for projecting a light from each point of the light-emitting surface to a region on the projection surface, and the union of the regions projected from all the points on the light-emitting surface covers an entire active surface of the light valve. An illumination system is also provided. | 03-29-2012 |
20120081676 | PROJECTION IMAGE DISPLAY APPARATUS - There is provided a projection image display apparatus which is excellent in quality of a display screen image even if a projection lens using a plastic lens having an asymmetrical shape with respect to an optical axis is used. The apparatus includes a projection lens which obliquely projects video light on a screen, an integrator which aligns a polarization direction of light from a light source, and an image display element (P, PL) which modulates light having the aligned polarization direction by an image signal. The projection lens includes multiple plastic lenses, and each of the multiple plastic lenses is arrayed, respectively, by shifting a gate direction to each other by 180 degrees. When the projection lens includes n sheets (n is a natural number) of plastic lenses, each of the multiple plastic lenses may be arrayed, respectively, by shifting a gate direction to each other by (360/n) degrees. | 04-05-2012 |
20120086916 | ILLUMINATION UNIT, PROJECTION TYPE DISPLAY UNIT, AND DIRECT VIEW TYPE DISPLAY UNIT - An illumination unit includes one or more light sources each including a solid-state light-emitting device having a light emission region configured of one or more light-emission spots, one or more traveling-direction angle conversion device each converting a traveling-direction-angle of light, and an integrator including a first fly-eye lens having cells which receive light from the traveling-direction angle conversion device and a second fly-eye lens having cells which receive light from the first fly-eye lens, the integrator uniformalizing illumination distribution in a predetermined illumination area. An optical system configured with the traveling-direction angle conversion device and the first and second fly-eye lenses has an optical magnification which allows each of light source images to have a size not exceeding a size of the cell in the second fly-eye lens, the light source images being formed on the second fly-eye lens by the respective cells in the first fly-eye lens. | 04-12-2012 |
20120086917 | OPTICAL UNIT, PROJECTION DISPLAY APPARATUS, AND OPTICAL DIFFUSER - Disclosed is a projection display apparatus which is provided with: a light source ( | 04-12-2012 |
20120092626 | PROJECTION APPARATUS - A projection apparatus includes a light source, a light valve, a light uniforming device, and a lens module. The light source provides an illumination beam. The light valve on a transmission path of the illumination beam converts the illumination beam into an image beam. The light valve has an active surface with a rectangular shape. The light uniforming device is between the light source and the light value. The lens module is between the light uniforming device and the light value. A refractive power of the lens module along a first direction is different from a refractive power of the lens module along a second direction. An f-number of the illumination beam along a direction parallel to a long side of the active surface of the light valve is greater than an f-number thereof along a direction parallel to a short side of the active surface of the light valve. | 04-19-2012 |
20120127438 | PROJECTION TYPE IMAGE DISPLAY APPARATUS - According to the present invention, a projection type image display apparatus enables control of a large amount of light masking through a light-masking unit while maintaining a uniform illumination distribution in an area to be illuminated by the illumination light. The apparatus uses two array lenses on which lens cells are arranged in matrix form, where light-masking unit masks the array lens installed on the light source side in their particular area. The light-masking unit adjusts the amount of light emitted from the light source. The light-masking area of lens cells adjacent to lens cells closest to an optical axis is made smaller than the light-masking area of other cells. | 05-24-2012 |
20120133904 | LIGHT SOURCE DEVICE AND PROJECTOR - A light source device includes a light source section adapted to emit excitation light, a lens array adapted to divide the excitation light into a plurality of partial light beams, a light collection optical system adapted to collect the excitation light divided into the plurality of partial light beams, and a light emitting element adapted to emit fluorescence by being excited by the excitation light. | 05-31-2012 |
20120147336 | PROJECTION-TYPE DISPLAY APPARATUS - A projection-type display apparatus is provided with a light source, an integrator ( | 06-14-2012 |
20120182528 | DIFFUSER SCREENS | 07-19-2012 |
20120182529 | PROJECTOR - A projector includes: a light source which emits laser light; a first diffusing section which diffuses the laser light emitted from the light source to emit a first diffused light; and a light modulation device which modulates the first diffused light emitted from the first diffusing section. The light modulation device includes a second diffusing section which diffuses the first diffused light emitted from the first diffusing section to emit a second diffused light, and diffusion intensity distribution of the second diffused light emitted from the second diffusing section is distribution which is consecutive around a central axis of the second diffused light. | 07-19-2012 |
20120212708 | PROJECTION TYPE DISPLAY APPARATUS FOR DISPLAYING AN IMAGE - The present invention provides a projection type display apparatus for displaying an image by which reduction of contrast is suppressed, including: a light source; a first lens array and a second lens array having a plurality of lens cell areas; a collecting lens; a display element; a projection lens; and a light shielding unit which light-shields the light fluxes from the first lens array to the second lens array, wherein the light shielding unit light-shields at least parts of all the lens cell areas except for the lens cell area in contact with an optical axis among a plurality of rectangular lens cell areas of the second lens array, and a light shielding area in the lens cell area in contact with the optical axis is smaller than that in any of the lens cell areas except for the lens cell area in contact with the optical axis. | 08-23-2012 |
20120212709 | FLY EYE LENS, OPTICAL UNIT, AND PROJECTION DISPLAY DEVICE - Provided is a fly eye lens capable of preventing the generation of steps on the boundaries between cells. The fly eye lens includes a plurality of cells arranged on first plane α. The plurality of cells includes a pair of cells adjacent to each other, which have spherical centers on second plane β parallel to first plane a and parts of spherical surfaces whose spherical radius differ, from each other, those parts being surfaces. The pair of cells satisfies the relationship of R | 08-23-2012 |
20120229777 | Projection Type Image Display Apparatus - A projection type image display apparatus includes a first lens group including a plural number of lenses being disposed in a direction of propagation light with respect to an image display element, a second lens group including a plural number of lenses being disposed in a direction of propagation light with respect to said first lens group and a reflection mirror, which is configured to reflect light emitted from at least one of said first and second lens groups, so as to project the light obliquely upon a screen. A ratio (Lo/Lp) of a diagonal size (Lo) of said screen and a distance (Lp) from a center of said reflection mirror to said screen is at least 2, and the second lens group includes a refractive lens having a negative power and a rotationally symmetric surface configuration. | 09-13-2012 |
20120242961 | ILLUMINATION DEVICE, PROJECTION DISPLAY, AND DIRECT-VIEW DISPLAY - An illumination device includes: a first light source; a first beam spread angle changing element; an integrator; and a first small-amplitude oscillation element, in which the integrator is configured of a first fly-eye lens and a second fly-eye lens, optical magnification of an optical system configured of the first beam spread angle changing element and the first and second fly-eye lenses, and a shape of the first small-amplitude oscillation element are determined to allow a size of each light source image formed on the second fly-eye lens by each cell of the first fly-eye lens not to exceed a size of one cell of the second fly-eye lens, an amount of displacement of each light source image by oscillation amplitude of the first small-amplitude oscillation element is determined not to form the light source image over a plurality of cells of the second fly-eye lens. | 09-27-2012 |
20120249973 | ILLUMINATION UNIT, PROJECTION DISPLAY UNIT, AND DIRECT VIEW DISPLAY UNIT - An illumination unit includes one or more light sources and an optical member. The optical member includes an integrator having a first fly-eye lens on which light from a solid-state light-emitting device is incident and a second fly-eye lens on which the light from the first fly-eye lens is incident. The integrator uniformalizes an illuminance distribution of light in a predetermined illumination region illuminated by the light incident from the solid-state light-emitting device. Each of the first fly-eye lens and the second fly-eye lens has a plurality of cells. The cells of the first fly-eye lens are arranged in a first direction and a second direction that intersect each other, and positions of the cells in the second direction are different from one another at least partially among a plurality of cell rows arranged along the first direction in the first fly-eye lens. | 10-04-2012 |
20120249974 | LIGHT-SOURCE APPARATUS AND PROJECTOR - A projection apparatus includes a fluorescence plate including a fluorescence layer configured to emit fluorescence light beams upon irradiation of the excitation lights, a first lens array, provided on a light source side of the fluorescence plate and including a plurality of lenses arranged in an array to correspond with the light-emitting elements, and configured to collect the fluorescence light beams and emit the fluorescence light beams to be parallel with one another, and a projection unit configured to form an optical image using the fluorescence light beams obtained via the first lens array and project the optical image on a projection object. | 10-04-2012 |
20120262679 | ILLUMINATION OPTICAL SYSTEM AND IMAGE PROJECTION APPARATUS - An illumination optical system include a first lens array including multiple lens cells that split a light beam emitted from a light source into multiple light beams, a second lens array including lens cells that the light beams split by the lens cells of the first lens array are incident thereon, and an optical element configured to illuminate an image display element by superposing light beams emerging from the second lens array on the image display element. At least one of the first lens array and the second lens array includes at least two lens cells each having a curved surface that is formed so as to be continuous with a curved surface of an adjacent lens cell, the at least two lens cells being decentered, and at least two lens cells of the first lens array have different radii of curvature. | 10-18-2012 |
20120293775 | SCANNING TYPE PROJECTOR - A scanning type projector for scanning an optical beam emitted from a laser light source has a collimator lens and a scanning device. A beam demagnifying and shaping prism is disposed between the collimator lens and the scanning device. The cross section of the beam that is elliptical is demagnified along the major axis of the ellipse such that the cross section of the beam is shaped. Thus, the cross section of the beam fits within the effective diameter of a deflecting mirror incorporated in the scanning device. The optical beam is reflected efficiently. A bright image can be projected. The resolution is improved by the beam shaping effect. | 11-22-2012 |
20120327377 | LIGHT SOURCE DEVICE AND PROJECTOR - A light source device is provided which includes a light source holding member in which light source elements are arranged, a lens array which has a plurality of lens portions which are arranged so as to correspond to the light source elements, respectively, and formed integrally with a plate-like base portion, and an array holding member for holding the lens array, wherein the lens array has hole portions through which fixing screw members are inserted, wherein the array holding member has threaded hole portions in positions which correspond to the hole portions, and wherein the fixing screw members pass through the hole portions in the lens array and are then brought into engagement with the threaded hole portions in the array holding member to thereby allow the lens array and the array holding member to be disposed to adhere to each other. | 12-27-2012 |
20130003024 | PROJECTION APPARATUS AND ARRAY LENS MODULE - A projection apparatus includes an optical engine base, a light source, a light valve, a projection lens, and an array lens module. The light source, the light valve, and the projection lens are installed to the optical engine base. The array lens module includes a frame body fixed to the optical engine base, a first array lens, and a second array lens. One of the first array lens and the frame body has a first positioning hole while the other one has a first positioning pillar inserted into the first positioning hole. One of the second array lens and the frame body has a second positioning hole while the other one has a second positioning pillar inserted into the second positioning hole. A light beam emitted by the light source passes through the first array lens, the second array lens, and the light valve sequentially to reach the projection lens. | 01-03-2013 |
20130057834 | LENS ARRAY, LIGHT SOURCE DEVICE, PROJECTOR AND LIGHT SOURCE DEVICE FABRICATION METHOD - A lens array which facilitates the alignment of optical axes of light source elements with optical axes of lenses, a light source device that employs this lens array, a projector that employs this light source device and a light source device fabrication method are provided. A lens array | 03-07-2013 |
20130162957 | PROJECTION APPARATUS AND PROJECTION LENS THEREOF - A projection lens including a reflective unit and a refractive unit is provided. The projection lens is disposed between an object side and an image side. The reflective unit is disposed between the object side and the image side and has a negative refractive power. The refractive unit is disposed between the object side and the reflective unit and has a positive refractive power. The refractive unit includes a first lens group and a second lens group. The first lens group is disposed between the object side and the reflective unit and includes at least one cemented lens and an aperture stop. The at least one cemented lens is disposed between the object side and the aperture stop. The second lens group is disposed between the first lens group and the reflective unit and includes at least one aspheric lens. A projection apparatus including the projection lens is also provided. | 06-27-2013 |
20130169941 | PROJECTION DEVICE AND PROJECTION-TYPE VIDEO DISPLAY DEVICE - Provided are a projection device and a projection-type video display device capable of displaying a plurality of videos, allowing speckles to be inconspicuous, and miniaturizing an optical system. A projection device includes an optical element including light diffusion elements capable of diffusing light, an irradiation device configured to irradiate the optical element with illumination light beams, each illumination light beam scanning the corresponding light diffusion element, spatial light modulators, each spatial light modulator being illuminated with illumination light beam which is incident from the irradiation device to each light diffusion element to be diffused, and projection optical systems, each projection optical system projecting modulation image obtained on each spatial light modulator on corresponding screen. The illumination light beam, which is incident to each position of each light diffusion element to be diffused, overlappedly illuminates on corresponding spatial light modulator. | 07-04-2013 |
20130215396 | LIGHT-ADJUSTING UNIT AND PROJECTOR - A light-adjusting unit includes: a light-shielding plate centered an optical axis of an incoming light flux and configured to block the light flux in response to the amount of rotation; a rotation transmitting gear configured to hold and rotate the light-shielding plate; a supporting shaft configured to rotatably support the rotation transmitting gear; and a supporting substrate on which the supporting shaft is provided, and the light-shielding plate is provided on one surface side of the supporting plate, and the rotation transmitting gear is provided on the other surface side of the supporting substrate opposite to the one surface side. | 08-22-2013 |
20130258294 | ILLUMINATION DEVICE AND DISPLAY UNIT - An illumination device includes: a light source section including a laser light source; a first uniformization optical member receiving light from the light source section; a second uniformization optical member receiving light from the first uniformization optical member; an optical device disposed on an optical path of outgoing light from the light source section; and a drive section vibrating the optical device. | 10-03-2013 |
20130271734 | LIGHT SOURCE STRUCTURE OF PROJECTOR - A light source structure of a projector includes at least a solid state lighting element, at least an optical collimator lens, a condenser lens, and a light dispersing apparatus. The solid state lighting element generates a plurality of radial beams, which are incident, to the optical collimator lens. The optical collimator lens converts the radial beams into a plurality of parallel beams which strike the condenser lens. The parallel beams are concentrated and focused by the condenser lens into a projecting beam. The light dispersing apparatus is positioned on at a focal point of the condenser lens and receives the projecting beam to scatter the projecting beam uniformly. | 10-17-2013 |
20130271735 | PROJECTOR - A projector including a light source unit, a lens integrator system, a light modulator having an image formation region where light from the lens integrator system is modulated in accordance with image information, and a projection system that projects light from the light modulator, wherein the projection system is so disposed that the optical axis of the light incident on the projection system is shifted from the optical axis of the projection system in a predetermined direction when the projection system is viewed in the direction in which the light travels toward the projection system, and the lens integrator system is so configured that illuminance of the light on a first side corresponding to the predetermined direction in the image formation region is higher than illuminance of the light on a second side that is opposite the first side. | 10-17-2013 |
20130293851 | PROJECTION SYSTEM - A projection system including a projection screen and a projection apparatus is provided. The projection screen has a plurality of optical microstructures. The optical microstructures are arranged along a first direction. The projection apparatus is capable of moving relative to the projection screen along the first direction. The projection apparatus includes an illumination unit, a light valve, and a projection lens. The illumination unit is capable of providing an illuminating beam. The light valve is disposed on a transmission path of the illuminating beam. The light valve is capable of converting the illuminating beam to an image beam. The projection lens is disposed on a transmission path of the image beam. The projection lens is capable of moving relative to the light valve along a second direction and projecting the image beam on the projection screen. The first direction and the second direction are opposite directions. | 11-07-2013 |
20140022515 | PROJECTOR - A projector includes a light source; a spatial light modulation device which modulates light from the light source according to an image that is written; a light diffusion device which adjusts a degree of diffusion of the light incident on the spatial light modulation device or the light emitted from the spatial light modulation device; and a light diffusion controller which controls the light diffusion device so that the light diffusion device diffuses the light when the light source starts to light up. | 01-23-2014 |
20140036238 | LASER PROJECTOR HAVING A DIFFUSER VIBRATED BY USING COMPONENT OF A COOLING MECHANISM - A projection image display apparatus that enlarges and displays an image includes a case, a laser light source, a cooling mechanism that includes a component that produces vibration during an operation, a diffuser that diffuses light emitted from the laser light source, optics that shape the light that is diffused by the diffuser to light having a uniform luminance distribution and a rectangular cross-section, and an optical modulation element that modulates the light shaped by the optics. | 02-06-2014 |
20140055757 | PROJECTION APPARATUS AND TRANSPARENT SCREEN FOR IT - There is provided a projection apparatus using an oblique projection optical system, which generates little reflection loss by providing a linear Fresnel lens at an incident surface in the case where the apparatus is used as a linear system, wherein said linear Fresnel lens makes total reflection of image light, and is capable of obtaining total surface property with good brightness in a region with small incident angle onto a screen, by using a total reflection Fresnel lens and a refraction Fresnel lens in combination. In addition, total surface property with further good brightness can be obtained by using a plurality of projection image display apparatuses in the same projection apparatus. | 02-27-2014 |
20140098351 | Multiple Source High Performance Stereographic Projection System - Multiple source high performance stereographic projection systems are described. One projection system described comprises a first projection channel, a first light source capable of providing light for the first projection channel, and a second light source capable of providing light for the first projection channel, wherein when the projection system is in a first presentation mode the first and second light sources are on, and wherein when the projection system is in a second presentation mode the first light source is on and the second light source is at a reduced power. | 04-10-2014 |
20140118702 | ILLUMINATION DEVICE, PROJECTION TYPE IMAGE DISPLAY DEVICE, AND OPTICAL DEVICE - To provide an illumination device and a projection type image display device that illuminate an area to be illuminated (image formation area) under conditions where speckle noise is less noticeable. | 05-01-2014 |
20140139811 | PROJECTOR AND METHOD FOR CONTROLLING THE SAME - A projector includes a power receiving terminal, a light source that emits light based on electric power supplied to the power receiving terminal, a light diffuser that adjusts the degree of diffusion of the light from the light source, a specifying section that alternately specifies one of illumination projection and image projection every time electric power supply to the power receiving terminal is started, and a light diffusion controller that controls the light diffuser so that when the specifying section specifies the illumination projection, the light diffuser diffuses the light from the light source, whereas when the specifying section specifies the image projection, the light diffuser transmits the light without substantially diffusing the light. | 05-22-2014 |
20140160442 | Despeckling of Continuous-Wave Lasers - An apparatus and method that reduces speckle from continuous-wave lasers by using stimulated Raman scattering in an optical fiber. The fiber core diameter and length are selected to achieve a desired output color and level of despeckling. Single-mode fiber may be utilized to achieve a sufficiently high power density to generate stimulated Raman scattering. | 06-12-2014 |
20140168615 | MICROLENS ARRAY, LIGHT INTENSITY DISTRIBUTION UNIFORMIZING ELEMENT HAVING SAME, AND PROJECTION APPARATUS HAVING LIGHT INTENSITY DISTRIBUTION UNIFORMIZING ELEMENT - The present invention provides a microlens array including multiple microlenses arranged axially parallel to one another, wherein entrance surfaces of the microlenses on which light is incident are made of resin, and exit surfaces of the microlenses from which light exits are made of glass. | 06-19-2014 |
20140176916 | LIGHT SOURCE UNIT ABLE TO DIFFUSE LASER BEAM SUFFICIENTLY, PROJECTOR, AND IMAGE PROJECTION METHOD - There is provided a light source unit having a light source which emits a laser beam, a plurality of diffusing plates on which the laser beam is incident and which emit the laser beam incident thereon as diffuse light, and a driving mechanism which moves the plurality of diffusing plates, wherein the laser beam from the light source is incident on one diffusing plate of the plurality of diffusing plates, and diffuse light emitted from the one diffusing plate is incident on the other diffusing plate of the plurality of diffusing plates. | 06-26-2014 |
20140198303 | OPTICAL SYSTEM - An optical system for a projector is provided, which includes a solid-state light source module, an optical module, a phosphor element and a light relay module which are disposed sequentially. The light source module can generate a first beam, while the optical module can relay and uniformize the first beam so that the first beam is uniformly incident on the phosphor element. The optical module also makes the light spot of the first beam incident on the phosphor element into a predetermined shape and area, so that the phosphor element will emit a second beam by an emitting area. The light relay module can receive a part of the second beam, and the part of the second beam has a solid angle. An Etendue defined by the solid angle and the emitting area may be identical to the Etendue of a light modulator of the projector. | 07-17-2014 |
20140232995 | ILLUMINATION DEVICE AND PROJECTOR - An illumination device includes a light source device, a uniformization optical system which uniformizes the illuminance distribution of light from the light source device on a region to be illuminated, and a diffraction optical element which is provided in an optical path between the light source device and the uniformization optical system, and rotates around a predetermined rotation axis. The diffraction optical element includes a first region which forms a first illuminance distribution, and a second region which is provided at a position different from the first region around the rotation axis, and forms a second illuminance distribution different from the first illuminance distribution. | 08-21-2014 |
20140285774 | LIGHT SOURCE DEVICE AND DISPLAY DEVICE - There is provided a light source device including at least one light source configured to emit light, a diffusion plate configured to diffuse and reflect the light emitted from the light source, and a partial transmission member which is provided between the light source and the diffusion plate and has a transmission region which allows the light to pass through and a reflection region which reflects the light and is except the transmission region. | 09-25-2014 |
20140333902 | Projection-Type Display Apparatus - An integrator includes a plurality of rectangular lens cells arranged in a direction x and a direction y. Laser light emitted from a laser source is projected onto an integrator. A beam irradiation position moving unit is configured to cause the laser light to scan the surface of the integrator in the directions x and y so that the laser light is sequentially projected onto a plurality of lens cells. A reflective liquid crystal device is configured to modulate the laser light emitted from the integrator. A projection lens is configured to project the laser light modulated by the reflective liquid crystal device. | 11-13-2014 |
20140333903 | PROJECTION TYPE DISPLAY APPARATUS FOR DISPLAYING AN IMAGE - The present invention provides a projection type display apparatus for displaying an image by which reduction of contrast is suppressed, including: a light source; a first lens array and a second lens array having a plurality of lens cell areas; a collecting lens; a display element; a projection lens; and a light shielding unit which light-shields the light fluxes from the first lens array to the second lens array, wherein the light shielding unit light-shields at least parts of all the lens cell areas except for the lens cell area in contact with an optical axis among a plurality of rectangular lens cell areas of the second lens array, and a light shielding area in the lens cell area in contact with the optical axis is smaller than that in any of the lens cell areas except for the lens cell area in contact with the optical axis. | 11-13-2014 |
20140340651 | PROJECTION APPARATUS AND HOLOGRAM RECORDING MEDIUM - A projection apparatus has a hologram recording medium configured to be capable of diffusing coherent light beams, an irradiation unit configured to irradiate coherent light beams to the hologram recording medium so that the coherent light beams scan the hologram recording medium, a light modulator that is illuminated by coherent light beams incident on and diffused at respective points of the hologram recording medium from the irradiation unit, a projection optical system configured to project a modulated image generated by the light modulator onto a scattering plane, and an imaging optical system provided between the hologram recording medium and the light modulator, configured to converge the coherent light beams diffused at respective points of the hologram recording medium to illuminate the light modulator. | 11-20-2014 |
20140375963 | System for Vibrating Optical Components Using an Airflow Device - A system for vibrating optical components using an airflow device is provided. The system includes: one or more elongated fibers, each of the one or more elongated fibers comprising a respective diameter; one or more optical components for at least one of conveying coherent light and interacting with the coherent light; and, an airflow device arranged to flow air over, and about perpendicular to, the one or more elongated fibers at a velocity, a combination of the respective diameter of each of the one or more elongated fibers and the velocity of the air configured to cause the one or more elongated fibers to produce shedding vortices that cause the one or more elongated fibers and the one or more optical components to each vibrate. | 12-25-2014 |
20150055100 | ILLUMINATION DEVICE AND DISPLAY UNIT - An optical member is provided including a substrate, and a plurality of sub-regions two-dimensionally arranged on the substrate. Each of the sub-regions includes a plurality of unit lenses. The sub-regions and unit lenses are configured to spatially divide an incident light flux into a plurality of light fluxes according to the arrangement of the sub-regions while partially superimposing said divided light fluxes onto one another. Also, each of the sub-regions includes a plurality of the unit lenses arranged in a two-dimensional array, and each of the unit lenses has shape anisotropy. | 02-26-2015 |
20150062541 | LIGHT EMITTING DEVICE AND PROJECTOR - A light emitting device includes: an active layer; and a first lens, a second lens, a third lens, and a fourth lens on which light generated by the active layer becomes incident. The active layer forms a first optical waveguide and a second optical waveguide. The first optical waveguide has a first bouncing section and a second bouncing section. The second optical waveguide has a third bouncing section and a fourth bouncing section. The first lens is provided at a position overlapping with the first bouncing section. The second lens is provided at a position overlapping with the second bouncing section and the second optical waveguide. The third lens is provided at a position overlapping with the third bouncing section and the first optical waveguide. The fourth lens is provided at a position overlapping with the fourth bouncing section. | 03-05-2015 |
20150070659 | METHOD FOR REDUCING SPECKLES AND A LIGHT SOURCE USED IN SAID METHOD - A method of reducing speckle effects in a projected image which is displayed on a display surface, comprising the steps of splitting an incident beam into one reference beam and one modulation beam; modulating said modulation beam with a modulation unit so as to produce a modulated beam; recombining the modulated beam and the reference beam onto a diffuser; and deflecting the recombined beam so as to project said image onto said display surface. | 03-12-2015 |
20150124227 | IMAGE DISPLAY DEVICE - An image display device includes: a light source that emits a beam having a spreading angle in a first direction and a spreading angle in a second direction, which is smaller than the spreading angle in the first direction, in a direction perpendicular to the first direction; an afocal optical system member that has a focal point and changes the beam emitted by the light source into a parallel beam; an anisotropic diffusion plate that is arranged at the focal point and that widens at least the spreading angle in the second direction; a vibration unit that vibrates the anisotropic diffusion plate; a fly-eye lens array on which the parallel beam emitted from the afocal optical system member becomes incident; an image display element that modulates the beam that has passed through the fly-eye lens array into image display light. | 05-07-2015 |
20150293271 | OPTICAL DEVICE, PROJECTOR, AND METHOD OF PRODUCING OPTICAL DEVICE - An optical device includes a base material including a surface on which multiple concaves are formed. The concaves include respective curved surfaces. The concaves are formed so that the bottoms of the concaves are at two or more different positions in a depth direction. In the optical device, 2/7≦|(n1−n2)×Δd|/λ≦10 holds, where n1 is the refractive index of the base material, n2 is the refractive index of a medium around the concaves, λ is the wavelength of a beam flux that enters the base material, and Δd is a range of the positions of the bottoms in the depth direction. | 10-15-2015 |
20150346464 | PROJECTION LENS SYSTEM HAVING MAGNIFICATION CHANGING FUNCTION AND PROJECTOR - A zoom lens is a projection lens which is composed of a negative first lens group, a negative second lens group, a positive third lens group, a negative fourth lens group, a fifth lens group, and a positive sixth lens group in order from the enlargement conjugate side, and changes magnification by changing the intervals between the lens groups. At least the second, third, and fifth lens groups move when the magnification is changed, and the third lens group moves from the enlargement conjugate side to the reduction conjugate side when the magnification is changed from a telephoto end to a wide angle end. An aperture stop is disposed between the surface closest to the reduction conjugate side of the third lens group and the surface closest to the enlargement conjugate side of the fifth lens group, and is approximately telecentric on the reduction conjugate side. | 12-03-2015 |
20160011432 | Speckle reduction using lenslet integrator | 01-14-2016 |
20160033853 | ILLUMINATOR AND PROJECTOR - An illuminator includes a (solid-state light source array) including a plurality of solid-state light sources, a light collecting system that collects light from the solid-state light source group at a predetermined light collection position, a collimator system disposed on the opposite side of the light collection position to the light collecting system and substantially parallelizing light from the light collecting system, and an integrator system that homogenizes the in-plane light intensity distribution of light from the collimator system. The illuminator further includes a transmissive diffusing unit that is disposed in the vicinity of the light collection position and transmits the light from the light collecting system while diffusing the light from the light collecting system. | 02-04-2016 |
20160085083 | OPTICAL DEVICE AND PROJECTION VIDEO DISPLAY DEVICE - The optical device includes a diffuser which diffuses light, a holder which holds the diffuser, a driver which vibrates the holder, and a supporter whose one end elastically supports the holder at one point and whose other end is fixed to an installation plane. | 03-24-2016 |
20160091728 | PROJECTION APPARATUS - A projection apparatus includes a light source to emit a light beam, an image display element to provide image information to the light beam, and a noise reduction mechanism disposed between the light source and the image display element. The noise reduction mechanism includes an optical element to transmit the light beam emitted from the light source, a dielectric elastomer fixed to the optical element, and first and second electrodes provided on first and second surfaces of the dielectric elastomer, respectively. The dielectric elastomer is deformed in accordance with the application of a voltage across the first and second electrodes to moves the optical element. | 03-31-2016 |
20160103387 | LIGHT SOURCE DEVICE AND IMAGE PROJECTOR INCLUDING THE SAME - A light source device includes a light source section that emits laser light, a reflection and diffusion member that diffuses and reflects the laser light emitted from the light source section, and a cooler that cools the reflection and diffusion member. The cooler includes at least one of an axial fan, an electronic cooling element, and a heat pipe. | 04-14-2016 |
20160170099 | HEAD-UP DISPLAY DEVICE | 06-16-2016 |
20160182871 | ILLUMINATION DEVICE, PROJECTION APPARATUS, LENS ARRAY, AND OPTICAL MODULE | 06-23-2016 |
20160377970 | HIGH CONTRAST PROJECTION SCREEN WITH STRAY LIGHT REJECTION - A multi-layer projection screen includes a transparent substrate having first and second sides, a stray light rejection layer, and a lens array. The stray light rejection layer is disposed across the first side of the transparent substrate. The stray light rejection layer includes an array of pillar structures, wherein each pillar structure of the array of pillar structures includes an entrance aperture, an exit aperture, a substantially transparent pathway extending from the entrance aperture to the exit aperture, and an opaque side wall surrounding the transparent pathway. The lens array is disposed across the second side of the transparent substrate and optically aligned to the array of pillar structures. The stray light rejection layer blocks display light received from the lens array having an oblique trajectory that is greater than a threshold angle from a normal of the second side of the transparent substrate. | 12-29-2016 |