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| Number | Title | Issue Date |
| 8172403 | 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 the projection subsystem can have a second f-number less than the first ... | 05/08/2012 |
| 8172404 | 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 ... | 05/08/2012 |
| 8152307 | Diffractive optical element having periodically repeating phase mask and system for reducing perceived speckle A optical apparatus (201) for use in an laser imaging system (200) is provided. The optical apparatus (201) includes one or more optical elements (215) that are configured to create an intermediate image plane (217) in the laser im... | 04/10/2012 |
| 8142025 | 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... | 03/27/2012 |
| 8128234 | Position adjustment device for integration rod A position adjustment device for an integration rod includes a fixed plate, two resilient members, and two adjusting screws. The first resilient member is positioned between the fixed plate and the rod for exerting an elastic force on the rod in a first direction, a... | 03/06/2012 |
| 8118432 | 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 4 of the r... | 02/21/2012 |
| 8113662 | 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 ... | 02/14/2012 |
| 8104898 | 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 oppo... | 01/31/2012 |
| 8025411 | Liquid crystal panel and projector using the same A liquid crystal panel includes a liquid crystal display element, a micro-lens array, an adjustable lens array, and a lens control unit electrically connected to the adjustable lens array. The liquid crystal display element has a light input surface and a light outp... | 09/27/2011 |
| 8020998 | 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... | 09/20/2011 |
| 7993007 | 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... | 08/09/2011 |
| 7988300 | 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 incid... | 08/02/2011 |
| 7972009 | 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 ... | 07/05/2011 |
| 7950805 | Systems and methods for displaying images to viewers in motion or viewing from multiple perspectives Systems and methods for displaying images to viewers in motion are provided. According to some embodiments, an image display system generally comprises an image source and a lensboard. The image source can be configured to present one or more images outwardly from t... | 05/31/2011 |
| 7946711 | 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... | 05/24/2011 |
| 7887193 | Illuminating device and projection type video display apparatus An illuminating device includes a discharge lamp, a condenser lens, an integrator lens, a polarization conversion system, an electromagnetic wave shielding plate, and an electromagnetic wave shielding wall. A light given out from each lens in the light-incident-side... | 02/15/2011 |
| 7878658 | Distortion and polarization alteration in MEMS based projectors or the like Briefly, in accordance with one or more embodiments, a prism capable of being utilized in a scanned beam projector comprises a first window disposed on a first surface through which the beam is capable of passing to impinge upon a scan engine at an angle of incidenc... | 02/01/2011 |
| 7878659 | Illumination optical system and projection-type image display apparatus using the same An illumination optical system configured to guide a light flux from a light source unit onto an illuminated surface includes a compression system configured to compress the light flux at a different compression ratio in a first cross section and a second cross sect... | 02/01/2011 |
| 7810931 | Light source apparatus, optical modulation apparatus, display apparatus, light condense illumination apparatus and projection type color display apparatus A light source apparatus, including: an array light source in which a plurality of emission light sources is arranged; a divergence characteristic controller disposed corresponding to the array light source and configured to control a divergence characteristic of ea... | 10/12/2010 |
| 7806530 | Projector device A liquid crystal projector device of the present invention includes, on an optical axis of a lamp unit, first and second integrator lenses having a plurality of cells arranged in the form of a matrix, a polarization beam splitter, and a slit plate having a plurality... | 10/05/2010 |
| RE41680 | Projector An output light from an a light source lamp unit 8 in a projection-type display apparatus illuminates liquid-crystal light valves 925R, 925G and 925B for three colors via an integrator optical system 923. A superimposing lens 9... | 09/14/2010 |
| 7614751 | Illumination optical system and image display apparatus including the same A lens array has a plurality of first minute optical elements which are one-dimensionally arranged in a predetermined arrange direction. Two of the plurality of first minute optical elements have refractive powers different from each other in a direction perpendicul... | 11/10/2009 |
| 7611246 | Projection display and optical integrator A projection display makes it possible to minimize the costs of a polarization conversion element, and concurrently makes it possible to improve illuminance nonuniformity and optical utilization efficiency and to accomplish physical apparatus compactness. An optical... | 11/03/2009 |
| 7588337 | Optical system and image projection apparatus An optical system is disclosed which is capable of improving of its contrast characteristic and displaying of images which have a brightness according to the brightness of the use environment. The optical system comprises an optical integrator which divides and reco... | 09/15/2009 |
| 7575328 | 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 plura... | 08/18/2009 |
| 7540617 | Illumination optical apparatus and projection type display apparatus An illumination optical apparatus and a projection type display apparatus capable of preventing an image on boundary lines of a fly-eye lens from deviating from a designed position and preventing unevenness of brightness is provided: wherein a first lens holding mem... | 06/02/2009 |
| 7537347 | Method of combining dispersed light sources for projection display A method and system for combining light emitted by dispersed light sources for use in a projection display or similar system. A plurality of elongated and tapered light integrators are placed side by side forming an array, each having at their small input end a ligh... | 05/26/2009 |
| 7533994 | Light source array for LCD applications A light source (100) includes a plurality of light emitting devices (101), each of which output light that is collimated by a first focusing structure (103). The collimated light is input to second focusing structure (104), which focuses ... | 05/19/2009 |
| 7527382 | Image projection lighting device with variable homogeneity An image projection lighting device is provided which includes a variable homogenizing system. The variable homogenizing system may homogenize light projected by a lamp across a light valve. The variable homogenizing system may vary the light across the light valve ... | 05/05/2009 |
| 7438423 | Illumination system and projection system incorporating same An illumination system and a projection system incorporating same are disclosed. The illumination system includes a two-dimensional array of independently operable light sources. Each light source illuminates substantially the entire active area of a pixelated optic... | 10/21/2008 |
| 7431461 | Light propagation characteristic control apparatus, optical display apparatus, light propagation characteristic control program, optical display apparatus control program, light propagation characteristic control method and optical display apparatus control method Exemplary embodiments of the invention provide a light propagation characteristic control apparatus which realizes to extend the light-intensity dynamic range and the number of levels, and is suited for enhancing image quality and reducing the size and generation ti... | 10/07/2008 |
| 7403335 | Screen, Fresnel lens sheet used for the same, and image display apparatus using the same The present invention provides a screen suitable for reducing the longitudinal dimension of a set. The present invention includes two prism sections. One is a totally reflective prism section (10) provided at the image generation source side of a Fresnel lens... | 07/22/2008 |
| 7401926 | Space light modulating apparatus, projector including same, process for manufacturing microstructure element used in same, and microstructure element manufactured by the same process A space light modulating apparatus includes a modulating unit that modulates incident light based on an image signal including a plurality of pixels and a light-shielding part placed between the pixels, and a refracting unit that refracts modulated light including a... | 07/22/2008 |
| 7390097 | Multiple channel illumination system An illumination system, used for illuminating a target area, includes a plurality of light generating elements and a plurality of light collection units disposed to collect light from respective light generating elements. Imaging lens units are disposed to relay ima... | 06/24/2008 |
| 7387389 | Image display system and method An image display device includes an image processing unit, a light source assembly, an optical modulator assembly, and a projection lens assembly. The image processing unit is configured to receive a video signal and generate image data and control signals. The ligh... | 06/17/2008 |
| 7382539 | Projector A projector includes an illuminating device having a light source device, a first lens array having plural first small lenses, a second lens array having plural second small lenses corresponding to the plural first small lenses, and a superposing lens; an electro-op... | 06/03/2008 |
| 7382534 | Screen and projector with spherical lens array A screen includes a lens array having a plurality of spherical lens elements. A first length of the spherical lens elements, along a first direction at substantially a center of each of respective spherical lens elements, and a second length of the spherical lens el... | 06/03/2008 |
| 7367677 | High efficiency lighting system, scrolling unit and projection system employing the same A highly efficient lighting system, a scrolling unit, and a projection system adopting the highly efficient lighting system and the scrolling unit are provided. The scrolling unit has at least one lens cell. From the viewpoint of light incident upon the at least one... | 05/06/2008 |
| 7360902 | System and method for light source modulation In one embodiment, a method for modulating light in an image display system includes generating a plurality of light beams. The amount of light beams that are received by a modulator is selectively varied, and the modulated light beams are received at the modulator.... | 04/22/2008 |
| 7354162 | Projector A projector includes: a light source device that emits substantially parallel illumination light; a first lens array having a plurality of first small lenses each of which divides the illumination light coming from the light source device into a plurality of partial... | 04/08/2008 |
