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| Number | Title | Issue Date |
| 6779898 | Image display apparatus and method for recapturing off-state light An image display apparatus and a method for recapturing off-state light are provided. The image display apparatus includes a spatial light modulator, a reflector, and an integrator element. The spatial light modulator, in response to a light beam, selectively modula... | 08/24/2004 |
| 6781641 | Liquid crystal display projector A liquid crystal display (LCD) projector in which temperature rise of the polarizing plate is reduced and the liquid crystal display panels and polarizing plates are easily retained in place. In the LCD projector, at least one of the incident light side polarizing p... | 08/24/2004 |
| 6776490 | Dual image slide and/or video projector A dual image displaying apparatus (10) is disclosed including a first light source (12) for emitting light through a first image (14) onto a surface and a second light source (20) for emitting light through a second image (22) onto... | 08/17/2004 |
| 6773114 | Portable multimode display device A portable device having an optical engine adapted to form an image from an image source in four different modes to allow a viewer to view the image. The image source is a microdisplay device, which can be reflective, transmissive or emissive. The display modes incl... | 08/10/2004 |
| 6773117 | Feed screw device Both end parts of a feed screw device are movably supported through cushioning members, and an inertia force of the screw after a movable member moved by the screw has collided against a stopper is absorbed by a movement in an axial direction, so that an impact at a... | 08/10/2004 |
| 6773118 | Apparatus for positioning and adjusting a light pipe An apparatus for positioning and adjusting a light pipe includes a bracket that is formed by folding a metallic plate. When the metallic plate is folded to form the bracket, a first end and a second end of the metallic plate perpendicularly press against each other ... | 08/10/2004 |
| 6773119 | Imaging prevention method and system As an imaging prevention method for interfering unauthorized imaging of a number of visual images projected on a screen, there is employed a method for projecting infrared light to a viewer/audience direction from at least one or more infrared light projector device... | 08/10/2004 |
| 6773120 | Optical projection system and method for using an optical projection system Optical projection system, comprising a projection lens, illumination optics in front of the projection lens showing a well-defined F# number, and at least one light modulator comprising a plurality of reflective elements, wherein this system shows an optical axis a... | 08/10/2004 |
| 6769773 | Projector with UV light source One or more UV light emitting diode (LED) chip is used as the light source of a picture projection system. The UV LED light is converted into red, green and blue light beams by means of red, green and blue fluorescent plates, respectively. The lights emerging from s... | 08/03/2004 |
| 6767101 | Film scanning device for receiving either strip film or a slide mount utilizing a single photographic sensor A film scanning device using the same CCD light sensor for pictures of strip film and for a slide mount also comprises a body having a strip film transport path disposed there through. The transport path has a first opening in the body for inserting a developed stri... | 07/27/2004 |
| 6765731 | Low element count projection lenses for use with pixelized panels Projection lenses for use with pixelized panels (PP) are provided. The projection lenses have a negative first unit (U1) separated from a positive second unit (U2) by a reflective surface (RS) which folds the lens' optical axis. The lenses are telecent... | 07/20/2004 |
| 6764185 | Projector as an input and output device An interactive display system includes a sensor for sensing a relationship between a mobile coordinate frame fixed to a moving projector, and a stable coordinate frame fixed to a stationary display surface in the real world. An output image to be projected on the di... | 07/20/2004 |
| 6761459 | Projection system The present invention relates to projection systems for displaying visual information in a variety of applications in order to reduce the projection area, the weight and the dimensions thereof. In one embodiment, the projection system for producing an external surfa... | 07/13/2004 |
| 6758566 | Projection system Projection systems are known to display images of all kind. The invention proposes to use of a ceiling of a room, for example the bedroom can be used to display all kind of images. Further the invention makes the projection system very much user-interactive. ... | 07/06/2004 |
| 6755537 | Method for globally aligning multiple projected images A method forms a cluster from a set of projectors. Each projector in the set includes a projector sub-system in a fixed physical relationship to a camera sub-system, and a communication sub-system for sending and receiving messages. A calibrate message is received i... | 06/29/2004 |
| 6755536 | System and method for displaying/projecting a color image An image projection system includes an image generator and first and second projection screens. The image generator respectively generates the first and second portions of the image on the first and second projection screens. The first projection screen projects the... | 06/29/2004 |
| 6751019 | Ultrathin mesh optical panel and a method of making an ultrathin mesh optical panel An ultrathin mesh optical panel and a method of use and making are disclosed. One embodiment of the optical panel includes a plurality of optical waveguides, wherein each optical waveguide is formed of a mesh material surrounding an optically clear core. The optical... | 06/15/2004 |
| 6742901 | Imaging prevention method and system As an imaging prevention method for interfering unauthorized imaging of a number of visual images projected on a screen, there is employed a method for projecting infrared light to a viewer/audience direction from at least one or more infrared light projector device... | 06/01/2004 |
| 6739725 | Inflatable three-dimensional display An inflatable display includes an inflatable balloon, a projector having a projection lens, an internal support structure that supports the inflatable balloon and the projector so that the projection lens is eccentrically disposed inside the inflatable balloon. The ... | 05/25/2004 |
| 6736517 | Dual mode laser projection system for electronic and film images A dual mode laser projection system having a film mode and an electronic mode that can be used to project an image onto a screen. In the film mode an image is projected by illuminating film with lasers, and in the electronic mode an image is created by modulation of... | 05/18/2004 |
| 6736514 | Imaging apparatus for increased color gamut using dual spatial light modulators A display apparatus (10) for projection of a color image from digital data onto a surface (140) comprises a first modulation system which provides a first modulated beam. The first modulation system comprises a first spatial light modulator for modulat... | 05/18/2004 |
| 6733136 | Video-based immersive theater Ultra-wide field-of-view images are projected onto a spherical or near-spherical screen that wraps around viewers to provide a visually immersive effect. Images are acquired using a novel lens system in conjunction with standard high-resolution video or film cameras... | 05/11/2004 |
| 6733140 | Method of ghost reduction and transmission enhancement for a real image projection system A real image projection system includes at least one curved reflector, positioned in a tilted configuration, wherein an optical axis of the reflector is not coincident with a viewing axis, and a beampath between a target source and the curved reflector neither passe... | 05/11/2004 |
| 6733137 | Digital mirror device projector and method of correcting video signal being used in digital mirror device projector A projector device made up of a digital mirror device (DMD) having several hundreds of thousand of mirror elements is provided which is capable of reducing a difference in chromaticness (tint) caused by performance/characteristic variation between filters or between... | 05/11/2004 |
| 6733141 | Apparatus for fine-adjusting orientation of optical device An apparatus for finely adjusting an orientation of an optical device. The apparatus includes a base plate which supports an optical device, a bracket coupled to the base plate such that the base plate is rotatable with respect to the bracket, a spring disposed betw... | 05/11/2004 |
| 6733142 | Image projector system operable in a slide projection mode and a liquid crystal projector mode An image projector system includes a cold light source, a projection lens, a slide retaining unit, and a liquid crystal module. The slide retaining unit is disposed between the cold light source and the projection lens, and is adapted to retain removably a projector... | 05/11/2004 |
| 6729733 | Method for determining a largest inscribed rectangular image within a union of projected quadrilateral images A method determines a largest rectangle on a display surface. A polygon L is drawn on a first depth plane having a depth z=1 in a depth buffer. A rectangle R is drawn with a predetermined aspect ratio on a second depth plane having a depth z=0. A center of projectio... | 05/04/2004 |
| 6729734 | System for enhancing the quality of an image A system for enhancing the quality of an image on a screen is provided. The system typically includes an illumination source configured to produce light and direct such light along an optical path, and a time-varying focus device disposed in the optical path and con... | 05/04/2004 |
| 6731429 | Projection system employing a screen with moving water The present invention is directed a projection system that produces a visual special effect. In one embodiment, the system includes a projector, a translucent projection substrate, a flow disturbance structure associated with one side of the substrate, and a water s... | 05/04/2004 |
| 6726331 | Image synthesizing optical apparatus An image synthesizing optical apparatus includes displays for modulating first, second, and third color beams according to image signals and outputting the first, second, and third color beams thus modulated. The optical axis of the second color beam coincides with ... | 04/27/2004 |
| 6726336 | Projector having a hinged front cover with a loudspeaker A projector having flat outside surfaces when not in use and a control panel disposed at an upper portion of a main body of the projector during use. A front cover is provided with a control panel on its back side and is rotatably supported on the main body by doubl... | 04/27/2004 |
| 6726330 | Electro-optical apparatus and projector The invention provides an electro-optical apparatus and a projector that can be efficiently fabricated and permit a reduction in manufacturing cost. A pair of substrates and an electro-optical element sandwiched between the pair of substrates are provided to constit... | 04/27/2004 |
| 6722769 | Display device The invention relates to an image display device comprising at least three light panels for emitting at least three light beams having different colors, combination means which are rigidly connected to a frame for combining the three light beams to a combined light ... | 04/20/2004 |
| 6719428 | Projector device and projector system having irregular color and irregular luminance correction circuit An irregular color and irregular luminance correction circuit includes a memory, a CPU (Central Processing Unit), and an external interface. In the memory, luminance distribution values, luminance inclination values, screen distribution values, and correction values... | 04/13/2004 |
| 6719433 | Lighting system incorporating programmable video feedback lighting devices and camera image rotation A lighting system is disclosed comprising a plurality of image projection lighting devices including a first image projection lighting device, a central controller, and a communications system which permits the central controller to communicate with the plurality of... | 04/13/2004 |
| 6715889 | Projection type display apparatus By mounting a projection lens to a first supporting member for fixing spatial light modulators, polarization beam splitters and a cross dichroic prism, and providing a second supporting member having a thermal expansion coefficient larger than that of the first supp... | 04/06/2004 |
| 6715886 | Optical system for display panel An ultrathin optical panel, and a method of producing an ultrathin optical panel, are disclosed, including stacking a plurality of glass sheets, which sheets may be coated with a transparent cladding substance or may be uncoated, fastening together the plurality of ... | 04/06/2004 |
| 6715882 | Projection type display device A projection type display device comprises a polarization splitting/color separating optical system for polarization-splitting and color-separating beam from an illumination optical system, reflection type light valves, each taking a rectangular shape, for modulatin... | 04/06/2004 |
| 6712476 | Projection display apparatus and method of display A projection display apparatus which display a projected image and may be free from connection with a computer. The projection display apparatus carries out processing with information stored in a portable memory and includes a memory controller that reads out the i... | 03/30/2004 |
| 6712477 | Optical projection system including projection dome A visual workstation for use by a viewer includes a dome having an open front end and a truncated spherical inner dome surface. A work surface is disposed in front of and adjacent the dome front end. The work surface defines a viewer area on a side of the work surfa... | 03/30/2004 |
