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US20110273673 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...
US20110085143 PROJECTOR  
A projector includes: a light source that emits light having an asymmetric illuminance distribution; a light modulation device that modulates the light emitted from the light source; and an...
US20120212709 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...
US20100020292 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...
US20080204667 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...
US20120249973 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...
US20100321596 PROJECTION OPTICAL SYSTEM AND PROJECTION DISPLAY UNIT USING THE SAME  
A projection optical system which improves the illumination efficiency includes a light source, an optical waveguide into which light from the light source enters and from which the light exits as...
US20070201007 Multi-Positional Smoothing Mirror For Video Projection Optics  
A projection display is provided with a light engine including a damped piezo-electric smooth picture actuating device. The light engine comprises a mirror and an actuator for positioning the...
US20120182528 DIFFUSER SCREENS  
Light 63 incident on a first screen 61 is dispersed by the optical properties of the polymer dispersed liquid crystal material associated with the first screen 61 at a given half scatter angle 64...
US20070013871 Light-emitting diode (LED) illumination in display systems using spatial light modulators (SLM)  
System and method for enhancing performance in an SLM display system using LED illumination. A preferred embodiment comprises computing a set of spectral characteristics, analyzing the set of...
US20090310087 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 (1), a red laser (2), and a green laser (3) emit...
US20150015849 PROJECTOR  
Disclosed is a projector, the projector including a light source, an illumination unit illuminating light incident from the light source, and a display device enabling to realize an image by...
US20110194076 Projector  
Disclosed is a projector, the projector including a light source, an illumination unit illuminating light incident from the light source, and a display device enabling to realize an image by...
US20100007854 ILLUMINATION SYSTEM, PROJECTION-TYPE DISPLAY APPARATUS, AND OPTICAL INTEGRATOR  
In at least one embodiment of the disclosure, an illumination system includes a light source that emits an illumination light flux. A first lens array has a plurality of first small lenses...
US20080192207 Single and Double Immaterial Ellipsoid  
An element generating through optical effect an “intangible” form (exempli gratia a sphere) detached from any support. The element comprises three Fresnel lenses that can be integrated in a...
US20090185157 PATTERN PROJECTION LIGHT SOURCE AND COMPOUND-EYE DISTANCE MEASUREMENT APPARATUS  
A pattern projection light source is disclosed in which a light source (2a); a plurality of mask regions (5) in each of which a light-transmitting portion that transmits light from the light...
US20070296926 Illumination optics and projection display apparatus  
An object of the present invention is to provide illumination optics that enables improvement in brightness and reestablishment of an irradiation state which is provided with illumination light...
US20100053565 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...
US20090185141 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...
US20090115970 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...
US20080278689 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...
US20090273760 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...
US20090059177 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....
US20100091250 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...
US20100026919 PROJECTOR AND LIGHT MODULATION DEVICE  
A light modulation device which modulates light entering from a light source, includes: a light diffusing unit which converts diffusion angle of the light into an angle larger than that before...
US20060238720 Illumination unit and image projection apparatus having the same  
An illumination unit and an image projection apparatus having the same are provided. The illumination unit includes: at least one light source unit which radiates a collimated light beam; an...
US20110211169 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...
US20140098351 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...
US20080036974 DISPLAY DEVICE USING DIFFRACTIVE OPTICAL MODULATOR AND HAVING IMAGE DISTORTION FUNCTION  
Disclosed herein is a display device using a diffractive optical modulator and having a distortion correction function. The display device includes a light source unit, a condensing unit, an...
US20090021700 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...
US20080278692 Method Liquefaction of Starchcontaining Material  
The present invention relates to a laser projection system (1) having means for reducing the coherence of a generated laser beam (3) in order to reduce the occurrence of annoying speckle artefacts...
US20090251669 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...
US20130215396 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...
US20120242961 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...
US20100020291 2-DIMENSIONAL IMAGE DISPLAY DEVICE, ILLUMINATION LIGHT SOURCE AND EXPOSURE ILLUMINATION DEVICE  
A 2-dimensional beam scan unit (2) reflects emission beams from a red laser light source (1a), a green laser light source (1b) and a blue laser light source (1c) and scans in a 2-dimensional...
US20110310352 PROJECTOR  
A projector includes: a light source device which emits an illumination light; an aperture disposed with a tilt with respect to a plane perpendicular to a center axis of the illumination light,...
US20100296065 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...
US20080278693 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...
US20090268169 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...
US20140022515 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...
US20140002801 ILLUMINATION UNIT, PROJECTION DISPLAY UNIT, AND DIRECT-VIEW DISPLAY UNIT  
An illumination unit capable of reducing luminance unevenness in illumination light, a projection display unit, and a direct-view display unit each of which uses such an illumination unit. An...
US20090174869 Projection display and optical aperture unit  
A gear portion meshing with the first step of a pinion gear at the side of a motor, which is a driving unit of optical aperture mechanism, is designed to be a two-gears composition of a gear...
US20090122267 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...
US20140232995 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...
US20090040467 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...
US20100296064 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...
US20100296061 PROJECTION WITH CURVED SPECKLE REDUCTION ELEMENT SURFACE  
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...
US20090066917 MICRO LENS ARRAY UNIT AND LIQUID CRYSTAL DISPLAY PROJECTION DEVICE USING SAME  
An exemplary MLA unit for use in a projection device is disclosed. The projection device includes an LCD panel. The LCD panel includes a number of pixels each having an opening. The MLA unit...
US20100073638 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....
US20120086916 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...
Matches 1 - 50 out of 199 1 2 3 4 >