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| Number | Title | Issue Date |
| 8182101 | Illumination optical system having the longest air interspace distance between a first and a second optical unit where a specific condition is satisfied for the optical system The illumination optical system includes an integrator configured to divide light from a light source into plural light fluxes, and a collection optical system configured to collect the plural light fluxes from the integrator toward an illumination surface. A rear p... | 05/22/2012 |
| 8157390 | Projecting system and lens combination thereof The invention discloses a projecting system. The projecting system includes two sets of lens. The first set of lens has a first focal length for focusing an incident ray of light to form a first image. The second set of lens has a second focal length for projecting ... | 04/17/2012 |
| 8061857 | LED light shaping device and illumination system An LED light shaping device and illumination system are provided. According to one embodiment, a light shaping lens is configured to shape light emitted from a light source and direct the light on a display panel for projection. The light shaping lens comprises a li... | 11/22/2011 |
| 8047660 | Projection system and method including spatial light modulator and compact diffractive optics A method and apparatus for a projection display system includes a spatial light modulator and a volume illumination hologram. The spatial light modulator comprises a digital micromirror device, and the projection system includes a laser light source to produce a seq... | 11/01/2011 |
| 7828449 | Adjusting mechanism of light integration rod module, optical engine and projection apparatus An adjusting mechanism for a rod module adapted to an optical engine is provided. The adjusting mechanism utilizes two wedge-shaped blocks moving in perpendicular directions so as to convert the vertical adjustment of horizontal adjusting component into horizontal a... | 11/09/2010 |
| 7819533 | Light source unit and projector apparatus A light source unit and a projector apparatus secure a certain light quantity by improving the utilization efficiency of light, and thereby realize miniaturization. The light source unit includes a reflector having an opening for housing a lamp and an opening for ra... | 10/26/2010 |
| 7819534 | Projector and method for manufacturing projector A projector includes: a light source that emits an illumination flux; a first lens array having plural first small lenses that split the illumination flux from the light source into plural partial luminous fluxes; a second lens array having plural second small lense... | 10/26/2010 |
| 7686459 | Lens array optical system, projection optical unit, and image projection apparatus A lens array optical system includes a first lens array that includes plural first lens cells arranged in first and second directions, the first lens array being configured to split a light flux to plural split light fluxes and to condense each split flux; and a sec... | 03/30/2010 |
| 7651227 | Projection system and method including spatial light modulator and compact diffractive optics A method and apparatus for a projection display system includes a spatial light modulator and a volume illumination hologram. The spatial light modulator comprises a digital micromirror device, and the projection system includes a laser light source to produce a seq... | 01/26/2010 |
| 7618147 | Efficient illumination for display systems and in methods for displaying A display system (100, 200, 300, 350, 400, 450) for displaying an image is described. The display system (100, 200, 300, 350, 400, 450) typically comprises one or a plurality of individual light sources (102) and a light collecting stage (110... | 11/17/2009 |
| 7607787 | Light source unit and projector system A light source unit which is reduced in size while securing a certain quantity of light by increasing the utilization efficiency of light and a projector system utilizing the light source unit. The light source unit includes a reflector whose internal surface is pla... | 10/27/2009 |
| 7585079 | Optical imaging method and projector utilizing the same An imaging method. A light beam passes through a first lens set, a second lens set, an imaging device and a projection lens set. The light beam is focused in a first position. The focused light beam converges in a first relay position via the first lens set and in a... | 09/08/2009 |
| 7572015 | Displaying optical system and image projection apparatus A displaying optical system is disclosed, which is capable of reducing a speckle noise. The displaying optical system comprises a light source emitting coherent light, a scanning device scanning the light, a first optical system causing the light from the scanning d... | 08/11/2009 |
| 7503662 | Light source device and projector A light source device has: a light-emitting tube including a light-emitting portion that emits a light beam through electrodes and a pair of sealing portions provided on both sides of the light-emitting portion and lead wires for making electrical continuity between... | 03/17/2009 |
| 7452087 | Illumination apparatus and image projection apparatus An illumination apparatus illuminating an objective illumination region comprises a plurality of illuminants having light-emitting surfaces radiating diffused light, an illuminant substrate in which the illuminants are disposed so as to be set in array on the circum... | 11/18/2008 |
| 7448761 | Architecture for a projector An improved architecture for a projector comprising a light source in the form of a lamp with a curved reflector with a distinctive focal distance for converging the light beam of the lamp; a so called cold mirror; an integration rod; a relay optics system consistin... | 11/11/2008 |
| 7445345 | Optical display device and projection-type display device A projection-type display device 1 including a light source 10, an optical integrator 20, dichroic mirrors 30 and 35, a reflecting mirror 36, a relay optical system 40, parallelizing lenses 50B, 50G and ... | 11/04/2008 |
| 7441908 | 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 light valve forming an image in accordance with a modulating signal with illumination light from a light source. The projection optical system includes first and second optical syste... | 10/28/2008 |
| 7441909 | Optical assembly for a projection system An optical assembly for a projection system includes an objective lens and a retro-focus lens. Then objective lens and retro-focus lens share one or more lens elements. A method of projecting an image comprises directing light from a light source to one or more modu... | 10/28/2008 |
| 7438424 | Illumination optical apparatus and projection type display apparatus An illumination optical apparatus and a projection type display apparatus capable of enhancing an illumination efficiency; having an ellipsoidal mirror, a light source arranged at a first focal point of the ellipsoidal mirror, a stop arranged closer to said light so... | 10/21/2008 |
| 7434946 | Illumination system with integrated heat dissipation device for use in display systems employing spatial light modulators Disclosed herein is an illumination system for use in display systems employing spatial light modulators. The illumination system comprises a fastening mechanism for securing the bonding of the walls of the light integrator of the illumination system. A heat dissipa... | 10/14/2008 |
| 7427146 | Light-collecting illumination system Light-collecting illumination systems are disclosed, which include a light source module, a first meniscus lens having a convex side and a concave side and a second meniscus lens having a convex side and a concave side. The concave side of the second meniscus lens i... | 09/23/2008 |
| 7407296 | Integrated light gathering reflector and optical element holder An integrated light gathering reflector and optical element holder for a projection device includes opposing first and second members. Each of the first and second members define a light gathering reflector portion and an optical element holder portion. The shape of... | 08/05/2008 |
| 7404646 | Projection lens apparatus and rear projection type image display apparatus A projection lens apparatus includes a plurality of lenses, for enlarging and projecting, onto a screen, an original image displayed on an image generation source. The plurality of lenses are arranged, beginning with the lens nearest the screen, as first to sixth le... | 07/29/2008 |
| 7404644 | Time-sequential colour projection A time-sequential colour projector comprises a pixellated light valve (2), such as a liquid crystal device, and a plurality of light sources (30, 31, 32). The light sources (30, 31, 32) direct light on different sets of pixels of the light valve... | 07/29/2008 |
| 7401930 | Projection system A projection system is provided. The projection system includes a light source, a color filter separating light emitted from the light source into colored light, a light-path converter converting a path of the colored light that has passed through the color filter, ... | 07/22/2008 |
| 7396130 | Optical system, image projection apparatus and method thereof An image projection apparatus. The image projection apparatus comprises a light source and LCD panel. The LCD panel comprises a plurality of pixels and color filters thereon. Light from the light source is projected to the pixels along an irradiative path and the LC... | 07/08/2008 |
| 7390095 | Projector Aspects of the invention can provide a projector that includes three optical modulators which modulate respectively red light, green light, and blue light, a color-synthetic optical system which synthesizes the light modulated by the three optical modulators, and a ... | 06/24/2008 |
| 7387388 | Illumination system using polarization conversion An apparatus and method is discloses for providing a substantially uniform, homogenous, polarized light. A beam of substantially un-polarized light is provided by a conventional light source. The un-polarized light is converted to at least four real images by using ... | 06/17/2008 |
| 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 |
| 7384154 | Temperature control system and method for projection device lenses A temperature control system and method for projection device lenses. The temperature control system includes a controllable heater for selectively heating one or more lenses pad a controller for adjusting heat from the heat source responsive to an operating conditi... | 06/10/2008 |
| 7382556 | Lens module A lens module (800) includes a lens barrel (20), a base (10), and a temperature compensation module (30). A first lens (201) is disposed in the lens barrel. The lens barrel is disposed in the base. The temperature compensation modu... | 06/03/2008 |
| 7377656 | Projector A projector of rear-projection type including a light source that outputs a laser beam and a scanner that scans a screen with the laser beam. When a laser beam with energy exceeds an accessible emission limit due to failure of the light source or the scanner, at lea... | 05/27/2008 |
| 7370977 | Optical projection system and image display device having the same An optical projection system which creates pincushion distortion of an image and then creates a barrel distortion of the pincushion-distorted image to compensate for the pincushion distortion and then projects an enlarged image without substantial distortion onto an... | 05/13/2008 |
| 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 |
| 7359122 | Prism assembly A prism assembly includes a first prism having a first front face, a first side face, and a first rear face, a second prism having a second front face parallel to the first rear face, a second side face, and a second rear face. The second prism is configured to dire... | 04/15/2008 |
| 7357512 | Color image projection system and method An image projection system projects an image on a projection screen having a phosphor for converting incident violet light into green light which, together with red and blue light, creates the image in full color. The screen includes an apertured mask having apertur... | 04/15/2008 |
| 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 |
| 7350925 | Total internal reflection Fresnel lens and optical system using the same Described is an optical lens having a light-receiving surface facing a light source and a first structured surface opposite a first portion of the light-receiving surface. The first structured surface includes a plurality of first reflecting surfaces and first refra... | 04/01/2008 |
| 7350928 | Projection display system A projection display system comprises an illumination device, a prism assembly, a projection lens and a reflective light valve. The prism assembly has a first light incident surface, a first light emitting surface and a second light emitting surface. The first light... | 04/01/2008 |
