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| Number | Title | Issue Date |
| 8186833 | Method and system for electroholographic display with zeroth-order diffraction suppression An electroholographic display system (300, 700) includes: a coherent light source (330, 730); a spatial light modulator (SLM) (320, 720) that modulates a coherent collimated light beam; and a processor and driver unit (310, 710) that gene... | 05/29/2012 |
| 8186834 | Illumination apparatus and projection-type image display apparatus An illumination apparatus includes: a red light valve configured to modulate red component light according to a red input signal; a green light valve configured to modulate green component light according to a green input signal; a blue light valve configured to mod... | 05/29/2012 |
| 8182092 | Image display apparatus An image display apparatus includes a light source, a color separation unit configured to separate light from the light source into colored light beams, liquid crystal display devices each configured to modulate a corresponding one of the colored light beams in acco... | 05/22/2012 |
| 8177369 | Reflective liquid crystal projector and image reproduction apparatus Laser light beams are diffused and shaped by diffractive optical devices such that they are introduced to corresponding pixels of a liquid crystal layer over an entire area of a display region of a reflective liquid crystal panel. The diffused and shaped laser light... | 05/15/2012 |
| 8177370 | Method to display images with metameric jamming to prevent illegal copy Method to display an image using four or more primaries having different spectral distributions that are distributed into three groups of primaries, wherein, in a visual color space, all primaries belonging to the same group have the same visual color and are metame... | 05/15/2012 |
| 8172402 | Projection system for displaying at least one image based on three filtered primary colours The invention relates to a projection system for displaying at least one visual image based on three primary colors, comprising a signal processing unit for converting said visual image into at least a visual image based on four primary colors, a frequency band bein... | 05/08/2012 |
| 8167432 | Method to display images using metamerism to prevent illegal copy A method to display images using four or more different primaries having different spectral distributions wherein, in the LMS color space, at least two of these primaries have the same L coordinates and the same M coordinates; thank to the invention, different metam... | 05/01/2012 |
| 8162483 | Hierarchical light intensity control in light projector In a light projection system, potentially hierarchical levels of light intensity control ensure proper laser-light output intensity, color channel intensity, white point, left/right image intensity balancing, or combinations thereof. The light projection system can ... | 04/24/2012 |
| 8157384 | Image display device An image display device includes a light source, a diffractive optical element adapted to diffract a light beam emitted from the light source, and a light modulation element adapted to modulate a diffracted light beam obtained by the diffractive optical element, and... | 04/17/2012 |
| 8152306 | Waveguide display An apparatus (e.g. a display) including a display substrate and a waveguide. The waveguide may guide ultraviolet light from the light source onto the display substrate. The display substrate may include light emitting material configured to emit visible light in res... | 04/10/2012 |
| 8152305 | Methods, systems, and computer program products for full spectrum projection A broadband electromagnetic wave beam is projected from a broadband wave source (301). The wave beam is separated by an element (306) into narrowband wavelength beams. The narrowband beams are directed across a predetermined area (312). A narrow... | 04/10/2012 |
| 8147067 | Laser projection system based on a luminescent screen A laser projection system includes at least one laser light source, a projection screen and a spatial light modulator for projecting a laser beam of the laser light source to form an image on the projection screen. The projection screen includes a luminescent layer ... | 04/03/2012 |
| 8147069 | Lighting device and projection image display unit A lighting device, including a first light source emitting light of a first wavelength; a second light source close to the first source, emitting light of a second wavelength in almost a same direction as that of the first source; a third light source located emitti... | 04/03/2012 |
| 8147068 | Projection display apparatus A projection display apparatus includes a light source, a plurality of light modulating elements that respectively modulate different color components of light emitted from the light source, a plurality of light diffusing elements that are disposed on sides near the... | 04/03/2012 |
| 8142024 | Image display device and adjustment method thereof An image display device includes: an optical modulator; and an optical compensation element configured to cancel out phase difference generated within the optical modulator; wherein the optical compensation element is installed in a state in which the brightness of ... | 03/27/2012 |
| 8132919 | Digital projector using arrayed light sources A beam alignment chamber extending in a length direction comprising a base having a front edge, and two side edges, first and second opposed side walls connected to the base, and extending along the length of the base, a front wall located at the front edge of the b... | 03/13/2012 |
| 8113661 | Projection-type display apparatus A projection-type display apparatus includes an optical engine that forms an image with a laser beam from a laser light source; and an optical fiber that connects the laser light source and the optical engine. The optical engine includes a rod integrator that equali... | 02/14/2012 |
| 8113660 | Laser projection apparatus with liquid-crystal light valves and scanning reading beam Laser lines at 635 nm or longer (ideally 647 nm) are preferred for red, giving energy-efficient, bright, rapid-motion images with rich, full film-comparable colors. Green and blue lines are used too—and cyan retained for best color mixing, an extra light-power boo... | 02/14/2012 |
| 8109638 | 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 op... | 02/07/2012 |
| 8104896 | Digital paint projection method and apparatus According to an embodiment, a color is projected onto a surface. An estimate of the surface color is processed and a projection color is selected as a function of the surface color estimate and a chosen color so that the projection color yields the chosen color or a... | 01/31/2012 |
| 8092026 | Optical engine and projector using same An optical engine includes a receiving chamber and three light source modules. Each light source module includes a positioning board, a heat dissipating plate, and a light source unit. The heat dissipating plate is sandwiched between the light source unit and the po... | 01/10/2012 |
| 8087786 | Projector The projector with at least two light sources for emission of light beams and a projection unit for controllable deflection of the light beams onto a projection surface has a control device to control light output of the light sources and a deflection of the project... | 01/03/2012 |
| 8061847 | Image projection arrangement with divergent light beams A lightweight, compact image projection module has a laser package having a common exit port, and a plurality of lasers mounted in the package and operative for emitting a plurality of laser beams of different wavelengths through the common exit port. An optical ass... | 11/22/2011 |
| 8061846 | Light source control method for video image display apparatus and video image display apparatus A method for controlling a light source of a video image display apparatus, comprising: projecting illumination lights to a first spatial light modulator (SLM) and a second SLM, and changing over a wavelength of one of the illumination lights projected to the second... | 11/22/2011 |
| 8057046 | Projector device having assembly of reflection type light emitting diodes A laminate type light emitting diode device having excellent heat radiation performance and high output capability is provided. A plurality of reflection type light emitting diode units 10 each of which includes a light emitting diode 2 and a dichroic ... | 11/15/2011 |
| 8052279 | Light source module and projector using same The present disclosure provides a light source module including three light source units each comprising a light source and respectively emitting light of different color. At least one light source unit of the three light source units is a first light source unit. E... | 11/08/2011 |
| 8047655 | Projection display apparatus A projection display apparatus is provided that is capable of reducing speckle noise, with no image of a flaw or dust noticeable in or on a screen even if it exists in or on an optical component. The projection display apparatus includes a glass rod that makes unifo... | 11/01/2011 |
| 8047654 | Projector with reduced speckle contrast A projector includes a light source module, a diffuser for diffusing the light beam emitting from the light source module, and a fluorescent plate. The light source module includes a light source capable of emitting a first light beam, a dichroic device for divergin... | 11/01/2011 |
| 8038299 | Light source apparatus, light source control method, and projector apparatus A light source apparatus includes a light source emitting light, an optical deflection element deflecting and exciting the emitted light, and a light conversion member cyclically outputting source light components having a plurality of hues in accordance with irradi... | 10/18/2011 |
| 8029143 | Illumination system An illumination system for providing an illumination beam to a light valve is provided. The illumination system includes a light source, a light integration rod, a color wheel, a first focusing unit and a second focusing unit. The light source is capable of generati... | 10/04/2011 |
| 8029144 | Color mixing rod integrator in a laser-based projector A system for providing illumination includes a color mixing rod integrator for receiving and homogenizing laser light or output to a spatial light modulator. The rod integrator recombines the light of the primary colors, thus obviating dichroic recombination optics.... | 10/04/2011 |
| 8025410 | Projection device providing reduced speckle contrast A projection device includes a diffuser and a light source system. The light source system includes a light source, a dichroic element, an actuator, and a reflector. The light source generates a light beam that is directed to the dichroic element. The dichroic eleme... | 09/27/2011 |
| 8025409 | Optical apparatus and projection display system An optical apparatus may include spectroscope means for splitting light irradiated from a light source into multiple color rays, polarizer means for polarizing the multiple color rays split by the spectroscope means, and trimming filters each trimming a wavelength c... | 09/27/2011 |
| 8016424 | Rear projector and projection system A rear projector includes: a screen; a display light source that emits a display light; a first optical modulation element that modulates the display light emitted from the display light source; an excitation light source that emits an excitation light; a second opt... | 09/13/2011 |
| 8016427 | Light source device, and two-dimensional image display device There is provided a light source device which can miniaturize a two-dimensional image display device as small as possible. The light source device is provided with three coherent light sources (11a), (11b), and (11c) corresp... | 09/13/2011 |
| 8016425 | Projector A projector includes: a light source which emits light containing visible light and infrared light; a light time division unit which divides light emitted from the light source into one or more visible lights having different wavelength ranges and one or more infrar... | 09/13/2011 |
| 8016426 | Method and device for projecting a panoramic image with a variable resolution Embodiments include a method and apparatus for projecting a panoramic image, the method including steps of generating an image on an image generation surface, and then projecting the generated image on a projection surface to obtain a panoramic projected image, the ... | 09/13/2011 |
| 8007112 | Image display apparatus having a plurality of light-shielding members An image display apparatus includes a light source, a color separation unit configured to separate light from the light source into colored light beams, liquid crystal display devices each configured to modulate a corresponding one of the colored light beams in acco... | 08/30/2011 |
| 8002412 | Projection system employing semiconductor diode A projection system includes a light source module illuminating a plurality of monochromic lights, at least one optical modulator modulating the lights illuminated by the light source module according to each of color signals, a color combining prism combining the m... | 08/23/2011 |
| 7988298 | Projector having a shifted or rotated optical axis A projector includes a lighting optical system for emitting a lighting beam, a color separation/light guiding optical system for separating the lighting beam from the lighting optical system into optical paths for three colored light beams, a light modulation device... | 08/02/2011 |
