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5568286 |
Fast liquid crystal switching unit
A fast-speed optical switching unit includes a polarization rotation unit having plurality of liquid crystal cells disposed on a common substrate and optically coupled together in series so as to...
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5566007 |
Reflection type liquid crystal display device capable of color display
The present invention provides a liquid crystal display device, having light-converging member provided for each pixel or each pixel row consisting of a plurality of pixels for converging the light...
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5565933 |
Color switching apparatus for liquid crystal light valve projector
A liquid crystal light valve (12) is sequentially modulated with images corresponding to three primary color components of a scene at a rate which is faster than flicker can be perceived. A color...
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5561538 |
Direct-view display apparatus
A direct-view display apparatus provides improved image quality by preventing the formation of a stripe pattern caused by parallax effects. A liquid-crystal panel for active matrix driving is...
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5557433 |
Transmissive liquid crystal display having prism lens film for light illumination and wave lens film for light diffusion
In a TN LCD, a prism lens film and a wave lens film are disposed on the incoming and outgoing sides of a liquid crystal panel, respectively, to obtain an image wide in visual angle and good in its...
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5557432 |
Display device and image formation apparatus having first and second lens arrays
A display device includes a plurality of light modulation portions, a first lens array having lens portions corresponding to the plurality of light modulation portions to converge incident light by...
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5552906 |
Optically addressed picture display apparatus
A picture display apparatus which converts an input optical image into a projected picture using a photoelectric effect. The picture display apparatus includes an image transfer device having a...
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5550656 |
Full color display with plural two-dimensional planar arrays of lenslets
A full color display is disclosed having a high efficiency light source optically coupled by a light coupling lens array to the active matrix of pixel elements of an image forming means such as a...
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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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5546202 |
Rear projection screen for high ambient light environments having a pinhole area substantially equal to luminous area of the light source
In a display system suitable for high ambient light environments, a lamp is used simply as a light source to illuminate a rear projection display screen, which is a matrix of tiny cells that...
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5546206 |
Concealing a bright defect using light blocking means to block only the wavelength band shed onto the defective pixel
A method of concealing a bright defect in a transmission display device which displays by selectively transmitting plural beams different wavelength bands shed onto corresponding pixels of a...
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5543942 |
LCD microlens substrate with a lens array and a uniform material bonding member, each having a thermal resistance not lower than 150°C
The present invention discloses an opposed substrate for use in a liquid crystal display element, for example. The opposed substrate is constructed by a transparent substrate, microlenses formed on...
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5543870 |
Rear projection screen with high off-axis sunlight rejection
A projection system having a rear projection screen (28) employs a collimating lens (26) in the form of a Fresnel lens adjacent the rear surface of the screen (28) to improve the image luminance at...
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5541745 |
Illumination system for a display using cholesteric liquid crystal reflectors
A display system for direct viewing or projection includes a source of polarized light, an analyzer for reflecting or transmitting light as a function of the wavelength and polarization...
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5541746 |
Light source device for use in liquid crystal projectors
A light source device for use in liquid crystal projectors which comprises a reflector oriented toward a liquid crystal panel and having a reflecting surface formed by a paraboloid or ellipsoid,...
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5541751 |
Light scan type display device having light waveguides and photo conductive switching elements
The light scan type display device includes a display medium laid between two opposed substrates, which is driven in response to a light signal. One of the substrates has plural light waveguides...
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5535025 |
Helmet mounted off axis liquid crystal display with a fiber optic wedge and a curved reflector
An optical arrangement that provides a telecentric helmet mounted display optical system. The optical arrangement comprises an image source including a faceplate wedge attached to a liquid crystal...
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5530489 |
Single projection lens color projection system
Color separation dichroic mirrors (40,42) positioned between a group of reflective liquid crystal light valves (26,28,30) and a polarization analyzer (14) enable a single projection lens (18) to...
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5528392 |
Image-forming apparatus having liquid crystal and photoconductive members and using the same light beam for reading and writing
An image-forming apparatus for exposing a photosensitive material with image light. An optical modulation device is provided such that the intensity of image light made incident from one side of an...
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5526146 |
Back-lighting system for transmissive display
A display assembly includes a display screen having a predetermined generally planar area for displaying transmissive data. A light source is provided for generating light of predetermined...
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5517340 |
High performance projection display with two light valves
A simplified two-light valve configuration for high performance projection displays which eliminates much complexity and the costs associated with three-light valve projection displays, such as a...
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5515185 |
Single panel type liquid crystal display projector
A single panel type liquid crystal display projector includes a flat LCD panel oriented perpendicularly to a first optical axis, lighting means having an illumination source surrounded by a...
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5515202 |
Optical projector arrangement comprising a compensator
An optical projector arrangement includes a light source. Light from the light source is formed into a collimated beam travelling along an axis by optics. The light is split into red, green and...
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5508830 |
Liquid crystal display unit having an enclosed space between the liquid crystal cell and at least one polarizer
In a liquid crystal display unit for use in a liquid crystal projector used in a high-temperature environment, this invention is directed to provide a liquid crystal display unit which prevents...
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5504602 |
LCD including a diffusing screen in a plane where emerging light from one pixel abuts light from adjacent pixels
A projection apparatus for holographic stereogram recording has a transmissive liquid crystal device and a diffusion screen. The transmissive liquid crystal device has a microlens array on its...
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5500692 |
Image projecting apparatus for producing an image for display on a projection screen
An image projector apparatus for producing an image for display on a projection screen. The image projector apparatus includes a plurality of first microlenses each receiving light from a light...
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5500747 |
Ultra-wide angle liquid crystal projector system
An ultra-wide angle liquid crystal projector system comprising a light source, a liquid crystal panel, a curved screen, and a projection lens for projecting in accordance with light emitted by the...
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5499138 |
Image display apparatus
An image display apparatus, for example, a spectacle-type image display apparatus, which is capable of reproducing a high-definition image by projecting pixels at a proper pitch on the retina in...
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5493351 |
Liquid crystal projector
A liquid crystal projector includes a light source, a color filter for adding color projection image, a liquid crystal panel for forming a projection image on it, a projection lens and an optical...
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5493427 |
Three-dimensional display unit with a variable lens
A three-dimensional display unit has a liquid crystal panel for simultaneously displaying a plurality of different parallax images and an optical characteristic variable lens attached to the liquid...
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5491525 |
Illumination unit for liquid crystal projection display apparatus and liquid crystal display apparatus having it used
A bulb (4) of lamp (1) has a reflection film (2) or reflection mirror (9) to make light components going outside a reflector (3) direct to the reflector (3) to reflect. If the lamp (1) is a spot...
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5490006 |
Liquid crystal light valve apparatus with a pair of non-parallel phase difference plates
In a liquid crystal light valve apparatus comprising an incident side polarizing plate, a twisted nematic liquid crystal cell of active matrix type and an outgoing side polarizing plate, two phase...
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5486884 |
Reflecting image projection screen and image projection system comprising such a screen
A reflecting image projection screen (1) is described, as well as an image projection system (17) in which such a projection screen (1) is used. Viewed from the front side (3) of the projection...
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5479276 |
Sunlight enhanced backlight system for cockpit display
An objective lens is mounted to the lower exterior portion of a canopy to focus sunlight into an attached fiber optic bundle. The bundle then carries the light a relatively short distance to an...
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5479275 |
Backlit liquid crystal display with integral collimating, refracting, and reflecting means which refracts and collimates light from a first light source and reflects light from a second light source
An improved NVG compatible day/night backlighting assembly for a color liquid crystal display includes a daytime high intensity light source, an edge-mounted nighttime low intensity light source,...
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5477351 |
Polymer dispersed liquid crystal panel with diffraction grating and reflective counter electrode
Pixel electrodes of a liquid crystal panel are made of a transparent conductive material, while a reflection electrode is formed on a counter substrate. A liquid crystal layer made of liquid...
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5475513 |
Projection type image display device maintaining resolution of an image unaffected by parallax
An image display device is arranged to have a liquid crystal light valve, a liquid crystal display panel, a backlighting unit, and a rod lens array. The liquid crystal light valve serves to form an...
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5473453 |
Liquid crystal display with opaque film formed by exposure through microlens
A photomask (5) of a liquid crystal display panel is formed by photolithographic exposure of a photosensitive resin layer through micro-lenses (3), and the apertures thereof are in complete...
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5467206 |
Color display device with intervening lens and spatial filter or with overlapping beams of chromatically separated light between the chromatic separator and lens array
A color display device comprises a source of light simultaneously emitting several ranges of chromatic components and a spatial light modulator comprising several dots, each dot comprising at least...
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5467205 |
Image display system with right and left eye illuminating means
An image display system wearable on the user's head is disclosed for displaying a magnified projected image. The image display system includes an image display element for displaying an image...
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5467207 |
LCD projection system which aligns the larger beam spread angle of the light source with the larger acceptance angle of the light valve and a nonimaging reflector for an illumination system
A projection system comprising a liquid crystal light valve having a wider acceptance angle for incident light in a first direction than in a second direction transverse to the first direction and...
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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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5459592 |
Projection display system including a collimating tapered waveguide or lens with the normal to optical axis angle increasing toward the lens center
The present invention provides a lighting device including a light source; a reflecting mirror for reflecting light emitted by the light source in a determined direction; and a compensating element...
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5450219 |
Raster following telecentric illumination scanning system for enhancing light throughout in light valve projection systems
Optical apparatus that condenses illuminating light into a narrow formatted band of light that follows activated lines down a light valve as it is driven. The present invention is a telecentric...
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5446510 |
Image display apparatus
An image display apparatus has a radiation source, generator for generating an image by modulating a polarized light beam and directing device for directing a light beam from the radiation source...
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5430562 |
Liquid crystal light valve including between light and light valve microlenses and two reflecting layers with a matrix of openings
A liquid-crystal light valve unit and a projection display system using same are provided. The liquid-crystal light valve includes a light valve having openings defining pixels in a matrix...
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5398125 |
Liquid crystal projection panel having microlens arrays, on each side of the liquid crystal, with a focus beyond the liquid crystal
A liquid crystal projection panel for use in a projection system. The projection panel is comprised of a large number of pixels of liquid crystal defining a image forming plane provided between two...
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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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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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5394254 |
Light valve projector assembly including fiber optic plate with fiber bundle perimeter less than twice as reflective as elsewhere
A liquid crystal light valve projector assembly is disclosed here including (1) a multi dashed layered liquid crystal light valve having a light-writing side and a light projecting side, (2)...
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