|
Match
|
Document |
Document Title |
|
|
5772299 |
Optical apparatus for liquid crystal display projector
An improved optical apparatus for an LCD projector capable of more effectively focussing a light on an LCD panel of a high vision or a wide vision, and achieving a desired wave length and a better...
|
|
|
5748369 |
Polarizing beam splitter and an illuminating device provided with the same
This invention relates to a polarizing beam splitter and an illuminating device having the polarizing beam splitter. The polarizing beam splitter of this invention comprises a transparent flat...
|
|
|
5729306 |
Light splitting and synthesizing device and liquid crystal display apparatus including the same
A light splitting and synthesizing device includes: a polarized beam splitter for splitting a white light into two polarized light beams and for directing the polarized light beams toward different...
|
|
|
5716122 |
Optical apparatus using polarizing beam splitter
The present invention relates to optical apparatus provided with an optical element for outputting polarized light beams separated generally in parallel. The optical apparatus according to this...
|
|
|
5717472 |
Polarizing prism for panel type liquid crystal display front projector and optical system using the polarizing prism
A polarizing element used for LCD projectors or LCD monitors, which includes a polarized beam separating and composing prism and either a twisted nematic (TN) liquid crystal or an 1/2 or 1/4...
|
|
|
5712694 |
LCD comprising a light separating element including a cholesteric liquid crystal sheet
A display device having an emitter, a direct-view display screen, a light-guiding member for guiding illumination light emitted from the emitter to the direct-view display screen, a light...
|
|
|
5706063 |
Optical system of a reflection LCD projector
An optical system of an LCD projector includes a light beam splitter for passing only a specific wavelength of light emitted from a light source and reflecting another wavelength. Two reflection...
|
|
|
5695268 |
Light source apparatus
A light source apparatus for emitting rectilinear polarized light beams includes a light source unit, a polarizing filter unit for transmitting a first rectilinear polarized component among the...
|
|
|
5648859 |
Liquid crystal microprism array, free-space optical interconnector, and optical switch
A liquid crystal microprism array has a plurality of grooves formed on a surface of a transparent substrate, a plurality of spaces divided by ridges of the grooves, and a plurality of liquid...
|
|
|
5608552 |
Liquid crystal display having an off-axis full-color holographic filter
A full-color liquid crystal display employing an off-axis holographic color filter. The liquid crystal display comprises a liquid crystal spatial light modulator that includes a mosaic of...
|
|
|
5555186 |
Projection type liquid crystal display apparatus using multiple polarizing beam splitters
First polarizing beam splitters have respective first polarization separating surfaces arranged perpendicularly to each other. Each of the first polarization separating surfaces transmits the...
|
|
|
5513023 |
Polarizing beamsplitter for reflective light valve displays having opposing readout beams onto two opposing surfaces of the polarizer
A polarizing beamsplitter (PBS) that can be used with reflective light valve displays includes two polarizing surfaces. A light source projects opposing readout beams onto the polarizing surfaces,...
|
|
|
5461500 |
Polarization converting apparatus and optical instrument having the same
This specification discloses a polarization converting apparatus having means emitting non-polarized light, and polarizing means having a light incidence surface and a light emergence surface, the...
|
|
|
5453859 |
Polarization beam splitter and projection display apparatus
A polarization beam splitter which includes a first prism, a second prism, and a dielectric multilayer film which is sandwiched between the first and second prisms is disclosed. The dielectric...
|
|
|
5452128 |
Polarization illumination apparatus and projector using the apparatus
A polarization illumination apparatus is constituted by only a light source, light condensing means having a reflection mirror arranged behind the light source, polarization beam splitting means...
|
|
|
5428469 |
Liquid crystal display projection systems employing polarizing beam splitters and passing light through display cell from both directions
A liquid crystal display projection system for providing improved brightness. A light beam is split by a polarizing beam splitter into two polarized beams having substantially orthogonal...
|
|
|
5387953 |
Polarization illumination device and projector having the same
A polarization illumination device and projector having the polarization illumination device are provided. An example of the polarization illumination device comprises an illuminator and a...
|
|
|
5387991 |
Polarization converting device and polarized-light illuminating system using the device and image display unit using the device
A polarization converting device for converting a light from a light source into a polarized light comprises a first prism having a first slant plane for receiving the light from the light source...
|
|
|
5381278 |
Polarization conversion unit, polarization illumination apparatus provided with the unit, and projector provided with the apparatus
A polarization conversion unit is disclosed. In the unit, a definitely polarized light emitted from a light source is divided into a pair of lights differing in polarized state and are caused to be...
|
|
|
5379135 |
Optical system for display apparatus
An optical system is disclosed which is for a display apparatus having a light source for emitting read light and a reflection type spatial light modulator for modulating the read light incoming...
|
|
|
5374968 |
Optics for a single-lens video projector with color-specific polarization channels
A high-efficiency optical system for use in a liquid-crystal light-valve video projector. High intensity, unpolarized white light is separated into primary color components by color-selective...
|
|
|
5365287 |
Three color channel, two-elevation optics for a single lens video projector
A high-efficiency optical system for use in a liquid-crystal light-valve video projector. High intensity, unpolarized white light is separated into primary color components by color-selective...
|
|
|
5359455 |
Polarization forming optical device
A random polarized light from a light source (305) can be changed into a linear polarized light by using a polarization beam splitter (303), a transmitting means (304) for rotating a plane of...
|
|
|
5347380 |
Liquid crystal optical polarization separator with parrallel alignment on one substrate, perpendicular on other
A polarization separator including a nematic liquid crystal (3) trapped between two transparent slides (1 and 2). The slide faces in contact with the liquid crystal are treated so that the liquid...
|
|
|
5327270 |
Polarizing beam splitter apparatus and light valve image projection system
A polarizing beam splitter apparatus of a light valve image projection system includes a polarizing beam splitter commonly usable as a polarizer and an analyzer, and a quarter wave plate in...
|
|
|
5299036 |
Liquid crystal projector including a polaration rotating element
Disclosed is an image projector of the type in which an LCD matrix screen is illuminated by two polarized beams after 90° rotation of the direction of polarization of one of these two beams. Each...
|
|
|
5295018 |
Polarization transforming optics, polarizing beam splitter and liquid crystal display
In a polarization transforming optics having a polarizing beam splitter (PBS) for transforming x-direction incident light flux from a metal halide light source into a single linearly (z direction)...
|
|
|
5283600 |
LCD projector
An LCD projector for projecting an image displayed on an LCD of the electrooptic-effect type on a projection screen is disclosed. The LCD projector has a polarization beam-splitting optical system...
|
|
|
5278680 |
Projection type liquid crystal display system and method of polarized light component projection
A projection type liquid crystal display (LCD) system having a light source, a light separation device for separating light from the light source into color components, a liquid crystal light valve...
|
|
|
5272496 |
Image projector with optimized luminous efficiency
Disclosed is an image projector wherein the illumination of an LCD matrix screen is done by means of two polarized beams coming from a same light beam that has no particular direction of...
|
|
|
5264951 |
Spatial light modulator system
There is provided an optical system for a spatial light modulator. The system comprises a light source for emitting an unpolarized light, a separator for separating a first linearly polarized light...
|
|
|
5260728 |
Apparatus for reducing, enlarging and projecting image information
A light beam (30) including a random polarization and radiated from a light source, such as laser oscillator (6) is separated into P wave polarization light beam and S wave polarization light beam...
|
|
|
5251049 |
Reflection type active matrix liquid crystal apparatus
A reflection type liquid crystal apparatus comprising a liquid crystal panel (26) composed of a pair of first and second opposed plates (30, 32) for accommodating a liquid crystal (34)...
|
|
|
5239322 |
Display apparatus
There is provided an apparatus for displaying an image on a screen by projecting a reading light from a light source onto a spatial light modulator of reflective type in which the image is written,...
|
|
|
5235444 |
Image projection arrangement
An image projection arrangement is disclosed, comprising a radiation source (1), an image display system having at least one image display panel (10) in which the polarisation direction of an...
|
|
|
5200843 |
Polarized synthesization in projection type liquid crystal displays
A projection type liquid crystal display (LCD) system having a light source, a light separation device for separating light from the light source into color components, a liquid crystal light valve...
|
|
|
5172254 |
Projection-type liquid crystal display apparatus
A projection-type liquid crystal display apparatus uses liquid crystal cells as light polarizing devices. This apparatus makes a polarization control of one of the two linearly polarized light...
|
|
|
5153752 |
Projector
A liquid crystal type video projector is disclosed which has a reflection type optical modulator for effective use of beams from a radiation source such as a lamp or the like. The projector further...
|
|
|
5142387 |
Projection-type display device having light source means including a first and second concave mirrors
The projection-type display device has a light source emitting a parallel luminous flux, a liquid crystal light valve disposed on the luminous flux and outputs a rectangular two-dimensional image...
|
|
|
5130826 |
Optical system having photoconductive members and optical means for decomposing and composing the polarized lights for a color picture display
There is disclosed an optical system for a color picture display having three spatial light modulators of reflecting type corresponding to an optical image of one of three primary colors by...
|
|
|
5115305 |
Electrically addressable liquid crystal projection system with high efficiency and light output
An improved polarized color video projector incorporates a light source to provide three collimated beams of linearly polarized light of blue, green, and red colors. A light modulator capable of...
|
|
|
5105265 |
Projector apparatus having three liquid crystal panels
All of first to third liquid crystal panels have the same structure. A plurality of dichroic mirrors separate light from a light source into the three primary color (red, green, and blue) beams,...
|
|
|
5042921 |
Liquid crystal display apparatus
In order to effectively use light from a light source, the light from the light source is split into P-polarized light and S-polarized light by a splitter or the like. The split P-polarized light...
|
|
|
5028121 |
Projection device
A projector has a light source (1) for producing a parallel beam of white light (4); two dichroic prisms (21, 22) each having two dichroic colour-splitting layers, which on three of their sides...
|
|
|
4936658 |
Projection type liquid crystal displaying device
A projection type liquid crystal display device includes a light source and condenser lenses for emitting two groups of beams of light which orthogonally cross each other. A first device is...
|
|
|
4913529 |
Illumination system for an LCD display system
An illumination system for an LCD projection display system to increase the brightness of the system. The system includes a polarizing beam splitter which splits a beam of light from a light source...
|
|
|
4826311 |
Prism assembly with three periscopes and projection lenses for a single light valve full-color projector
A full-color projector system is disclosed, wherein a single light valve is employed to modulate red, green and blue illumination beams in accordance with the respective primary color components of...
|
|
|
4786146 |
Color sequential illumination system for a liquid crystal light valve
A color sequential illumination system for a liquid crystal light valve is disclosed. The invention operates with no moving parts and provides for the sequential illumination of a light valve with...
|
|
|
4690526 |
Prism assembly for a single light valve full-color projector
A prism assembly for a single light valve, full-color projector is disclosed. The prism assembly is adapted to polarize and separate the white illumination light into the three primary colors....
|
|
|
4647966 |
Stereoscopic three dimensional large screen liquid crystal display
A three dimensional large screen liquid crystal projection display utilizes wo liquid crystal light valves in tandem to produce polarization-type stereoscopic images in a large screen display...
|