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7591560 |
Reflection optical system and projection display apparatus using the same
A reflection optical system placed between a light valve 5 and a screen 4 , wherein curved surfaces are only three reflection surfaces of first to third mirrors 1 to 3 , and satisfies the...
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7429111 |
Two-panel color management system
The invention provides a two-panel color management system for projection display applications, wherein color sequencing is accomplished using achromatic beam switching and static color separation....
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7391568 |
Luminous intensity distribution control device and display having the same
A liquid crystal display apparatus including: a liquid crystal display element having a liquid crystal layer; a backlight apparatus arranged at one side of the couple of substrates of the liquid...
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7390093 |
Projection display with color segmented microdisplay panel
A single panel display may have discrete, dedicated segments associated with each of the primary colors. The segments may not be equally sized in some embodiments. The light from a light source may...
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7202917 |
Projection type image display device
A light source, an image display panel including multiple pixel regions, each of which modulates light, light control means for focusing light from the light source onto associated pixel regions...
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7198376 |
Illumination optical unit liquid crystal projector and production method of liquid crystal projector
A lighting optical unit having an optical system for irradiating light from a light-source lamp on a predetermined object in a uniform and/or convergent manner includes a reflector for reflecting...
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7196687 |
Swept illumination to reduce LCD lag in front and rear projection displays
Methods for illuminating the display area of a liquid crystal panel ( 13 ) are provided. Illumination light ( 17 ) is compressed into a stripe which is scanned across the display area in...
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7133049 |
Apparatus and method for driving liquid crystal display device
A display device includes a display panel having a plurality of pixels, each pixel including R, G B and W sub-pixels; a color information detecting unit receiving R, G and B sub-pixel video data...
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7097306 |
Projection device and liquid crystal panel unit for use in the projection device
A projection device includes on a chassis a liquid crystal panel for irradiation with light from a light source, a polarizing plate opposing the liquid crystal panel, and an optical compensation...
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7011414 |
Highly efficient projection system and color scrolling method therefor
A highly efficient projection system and a color scrolling method are provided. In the color scrolling method, first, an optical splitter splits a beam emitted from a light source into individual...
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6856304 |
Liquid crystal projector
A liquid crystal projector has a white light source, dichroic mirrors for separating white light coming from the white light source into beams of a plurality of colors, a liquid crystal panel...
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6806872 |
Video signal processing system
It cannot be ensured that display setting changes are made at once in a system in which the number of display settings for a display processing apparatus is extremely large, an application is...
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6747708 |
Projection method and system utilizing a variable transmittance color switch
A single polarizer projector with a color switch and a projection method thereof, wherein the mean luminance of the inputted video signal is calculated so that the transmittance of the color switch...
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6690432 |
Alignment of the optical and the electrical scan in a scrolling color projector
A prism is mounted onto a motor without regard to its rotation angle relative to the motor index. Its position is electronically set later after construction of the optical path. A motor controller...
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6683658 |
Scanner phase control for a scrolling color projector
A scanner phase control for a scrolling color projector utilizes the back-EMF value of a motor which rotates a prism of the scanner to set a reference point for the prism. A reference phase signal...
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6657609 |
Liquid crystal displays with reduced flicker
A method and apparatus of reducing flicker in liquid crystal displays. A light beam modulated by image information organized by frames is produced. In alternating frames, designed as even and odd...
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6642970 |
Single panel color projector
The projector comprises a light source that emits illuminating light, a single modulation panel, a projection optical system, a color filter mechanism, a converging optical system that converges...
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6563551 |
High contrast polarizing optics for a color electro-optic display device
A projection-type color image display system uses a reflective liquid crystal (LC) light modulator ( 24 ) and a polarizing beam-splitter ( 22 ) for separating the incoming and reflected light....
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6542308 |
Projection display apparatus and projection lens device for use therein
A projection display apparatus having a light source for generating a white light, a liquid crystal panel for modulating an incident light from the light source, a polarizing plate which is located...
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6518940 |
Image display apparatus
An image display apparatus includes a storage display element which stores an image by receiving image light from a film frame and displays the stored image, a display device capable of selectively...
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6476560 |
Liquid crystal projector
A liquid crystal projector comprises a reset switch for resetting the operation of a microcomputer, and abnormality recovery means for initializing, when the liquid crystal projector is in a power...
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6329963 |
Three-dimensional display system: apparatus and method
In a presently preferred embodiment of the invention, a three-dimensional scene is reproduced on a specialized light display which offers full multiviewpoint capability and auto-stereoscopic views....
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6317170 |
Large screen compact image projection apparatus using a hybrid video laser color mixer
A video image projection apparatus is disclosed. The apparatus uses a laser as a light source and modulates the light beam using a modulator according to an image signal. The apparatus projects the...
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6292234 |
Projection type color liquid crystal display device
A projection type color liquid crystal display apparatus includes: light collimation means for producing collimated light; main-wavelength band separation means for receiving the collimated light...
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6281949 |
Apparatus for displaying a picture which involves spatially modulating a light beam
A picture display method and apparatus in which a light source is lengthened in service life and optimum color reproduction is realized, while the light utilization efficiency is improved to reduce...
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RE37056 |
Temperature compensated color LCD projector
In a projection display device based on one or more (twisted nematic) LCDs (4), simple temperature compensation is possible by optimizing the d.Δn value (n) at the maximal operating temperature....
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6163348 |
Image display apparatus
The image display apparatus of the invention includes: an image projector for projecting a plurality of optical images having image information for a color display in a juxtapositional color...
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RE36725 |
Projection-type display device
A projection-type display device having a single light source which produces light. A first dichroic mirror group receives the light and separates it into colored light. A transmissive light valve...
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5990982 |
DMD-based projector for institutional use
A baseline display system (10) is capable of receiving different types of input signals, analog or digital, having different horizontal and vertical input resolutions. The system uses serial video...
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5892623 |
Mutli-color-band light source
A light source for projecting rectangular color light bands includes a white-light source, a color separation device for separating the white light into red, green and blue components, and separate...
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RE36060 |
Liquid crystal video projector having lamp and cooling control and remote optics and picture attribute controls
A video projection system having a liquid crystal panel with a video image, a projection lamp with ON/OFF control, a zoom lens with a zoom control mechanism, a focusing lens with a focusing control...
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5847778 |
Video display device
In a projection type video display device comprising a light writing type spacial light modulator, disturbances brought about by a resetting pulse and appearing in a projected picture as a black...
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5805274 |
Photographic printer utilizing a photoactivated liquid-crystal light valve in order to enhance image processing
A photographic printer has a lamp which projects light through a cut-off filter, a filter unit, and a diffusion plate. The light travels further through a film negative, an objective lens, and to a...
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5793446 |
Projector utilizing compressed white signal
In a projector having liquid crystal panels as light modulators, the liquid crystal panels are independently used for white-light modulation and colored-light modulation, respectively, so that high...
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5715022 |
Image display apparatus
An image display apparatus is disclosed which includes: an optical system including a light source and at least one projection lens; a display means for forming a display image, the display means...
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5706062 |
Projector system including keystone correction
A projector for use with a light source and including a shutter assembly having a multiplicity of pixel light valves and a color separator disposed intermediate the light source and the shutter...
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5650832 |
Multimode color wheel for display device
A color wheel assembly (15, 15a, 15b) for use in a display system (10) that uses a beam of source illumination to generate images with a display device. The color wheel (15) is moveable in and out...
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5635997 |
Color display device
A color display device (10) incorporates three light sources (12) supplying red, green and blue light respectively. A spatial light modulator (20) is positioned to provide time varying selective...
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5617152 |
Projector system for video and computer generated information
A projector for use with a light source and including a shutter assembly panel having a multiplicity of pixel light valves overlying an array of interspersed shutter pixels each of which transmits...
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5598053 |
LCD-CRT hybrid image tube
An LCD projection system, located within a standard color CRT, is used to oject toward the screen decay stimulation patterns that vary dynamically from one frame to the next for each pixel based on...
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5552839 |
Projection system for entertainment and game apparatus
The present invention relates to a video system for entertainment and game apparatus. The video system includes a data carrier on which the game is stored. Video informations (pictures) stored on...
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5548349 |
Transmission type color liquid display apparatus with first and second lens layers located between a white light source and the display device
A color liquid crystal display apparatus according to the present invention includes: a transmission type liquid crystal display device including a plurality of pixels arranged in a matrix along a...
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5548347 |
Single panel color projection video display having improved scanning
A color video projection video system in which a white light source is separated into red, green and blue bands with dark guard bands spaced therebetween. Scanning optics cause the colored bands to...
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5526063 |
Video image projector with improve luminous efficiency
A three-color image projector, of the type using several colored light beams with primary colors, with improved luminous efficiency. The projector employs spatial rather than temporal beam...
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5508738 |
Single panel color porjection video display having control circuitry for synchronizing the color illumination system with reading/writing of the light
A color projection video system utilizing only a single light valve. A white light source is separated into into red, green and blue bands. Scanning optics cause the RGB bands to be sequentially...
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5471255 |
Bias drive and noise reduction in image projectors
Improved bias drive and noise reduction techniques for use with and image projector, such as a liquid crystal light valve image projector. A bias drive circuit produces a square wave-like signal to...
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5465174 |
Single light valve full-color projector display
A single light valve full-color projector 10 operative to display an image on a screen 12 in response to first and second video signals. The inventive projector 10 includes a laser 22 for providing...
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5398082 |
Scanned illumination for light valve video projectors
A video projection system employs a reflective light valve (10) that is optically addressed by an image from a cathode ray tube (12) and provides an output image for projection by means of a high...
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5398081 |
Apparatus for projecting colored images
A color projection display uses a dichroic cube for modulating the color of light reaching the imaging element of the display. This way, a colored image may be projected by frame sequential...
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5327263 |
Image processing apparatus employing a spatial light modulator
An image processing apparatus comprises a liquid modulator having a photoconductive material including an image-writing plane, a liquid crystal layer laminated on the photoconductive material, a...
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