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7623188 |
Directional display device
A directional display device that separates and displays images on an image display surface of a display panel in different viewing directions. The directional display device includes a...
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7616266 |
Liquid crystal projection system
A liquid crystal projection system has a dichroic mirror, a reflecting prism, a first and a second polarizing component, a dichroic component, a modulating device, and a projection lens. The...
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7595935 |
Rod lens
A rod lens comprises a tubular body having a first end, a second end, a length and a diameter, a first optically transparent closing element, tightly sealing the first end of the tubular body, a...
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7564509 |
Illumination of objects using spatial light modulators
Apparatus for illuminating an object comprising a first polarizing beamsplitter ( 2 ) which produces a first linearly polarized component ( 3 ) and an orthogonally polarized component ( 5 ). The...
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7551280 |
Method for manufacturing optical element, method for manufacturing projector, optical element and projector
A method for manufacturing an optical element in which a display quality of a projection image is improved is provided. The method is for manufacturing an optical element having a polarization...
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7532407 |
Projection display
A projection type image display apparatus is provided which includes a housing to hold an optical system including multi-lenses, a polarized-light conversion element and the color separation...
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7528892 |
Projector device
A liquid crystal projector device of the present invention includes a lamp unit, an optical system for separating light emitted from the lamp unit into light of three primary colors, and an image...
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7502078 |
Projection type display apparatus with means for supplying an air cooling stream to a gap between a light receiving surface of a prism and a third surface of a closed triangular prismatic housing
A projection type display apparatus includes: a reflective polarizing plate for each color light which transmits each of R light, G light and B light having a P polarized component subjected to...
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7497577 |
Light modulator assembly
A projection assembly includes a dichroic beam splitter having first and second crossed dichroic surfaces, at least one interference type light modulator panel optically coupled to the dichroic...
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7448755 |
Three-panel projection display apparatus for displaying color images
A three-panel projection display apparatus displays a color image by separating light emitted from a light source into lights of three primaries, i.e., red, green, and blue, with dichroic mirrors,...
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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...
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7443565 |
Image display apparatus, projector, and polarization compensation system
Aspects of the invention can provide an image display apparatus for displaying an image by modulating light from a light source based on display image data. The apparatus can include a first light...
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7438421 |
Two-panel type projection system and projection method thereof
A two-panel type projection system includes a polarization light source to irradiate a polarized white light, a color selector to sequentially transmit two light components every predetermined time...
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7416306 |
Laser projector
A reflection-type laser projector ( 100 ) projects modulated laser beams outputted from a laser projection unit ( 40 ), on a screen, wherein a reflector ( 112 ) as a constituent of the screen ( 110...
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7411636 |
Stereoscopic liquid crystal display (LCD) with polarization method
A display system for stereoscopic displaying of images includes a pair of wide viewing angle displays arranged at an angle to each other, each display providing respective images formed by plane...
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7408527 |
Light emitting device driving method and projection apparatus so equipped
A projection system is provided with a controller equipped to drive light emitting devices of a light source of the projection system in a manner that enhances the operational life of the light...
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RE40450 |
Liquid crystal projector
A liquid crystal projector has three liquid crystal panels for modulating first color light, second color light, and third color light respectively. A light synthetic device synthesizes each color...
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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 )...
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7401925 |
Image projection system
An image projector system includes an LED controller and first and second LEDs, a dichroic mirror. The LED controller controls the first and the second LED to emit first and second color lights,...
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7396131 |
Projection assembly
Projection assemblies are provided herein for use in a display system. According to one exemplary embodiment, the projection assembly includes an illumination source and a plurality of co-planar...
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7360900 |
Illuminating apparatus, image display apparatus, and projector
An illuminating apparatus includes at least two solid light-emitting elements including a first solid light-emitting element and a second solid light-emitting element; a polarized-light combining...
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7359008 |
Dynamic range and contrast enhancement for microdisplay
The invention relates to a light valve system that enhances the contrast ratio for light and dark video images and reduces contouring artifacts. The light valve system comprises a color selection...
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7347561 |
Image display device
A color management system for use with projection displays includes, for example, two or more analyzers positioned to receive light beams as they are emitted from the panels of a color management...
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7334897 |
Display apparatus using LCD Panel
A projection apparatus ( 10 ) has an illumination section with a light source ( 20 ) providing a substantially unpolarized illumination beam of multiple wavelengths. A multiple wavelength polarizer...
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7295371 |
High efficiency electromagnetic beam projector, and systems and methods for implementation thereof
This invention relates to electromagnetic wave beam paths, formation of the beam, illumination of programmable electromagnetic wave field vector orientation rotating devices (“PEMFVORD”) with...
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7293880 |
Light source including multiple light emitting devices driven by a control device, and projector
Aspects of the invention can provide a light source that can reduce the optical system in size while enlarging a color reproducible range and achieving higher luminance. The system can include a...
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7293877 |
Projecting apparatus and projecting and displaying apparatus
The present invention includes a light source which emits a plurality of lights having different wavelength areas, a plurality of image forming devices which are arranged on respective optical...
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7277090 |
Method and apparatus for image and video display
The present invention relates to a display configured to display images that includes multiple display elements capable of controlling light within a visible-light spectrum. The display elements...
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7274411 |
Liquid crystal display device
A liquid crystal display element which has the high speed response and the high contrast and a display device employing the same are provided. In a display device employing a reflection type liquid...
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7210788 |
Color prism and projection-type image display apparatus employing the same
A color prism capable of separating incident light into four color beams and synthesizing incident four-color beams, and a projection-type image display apparatus employing the color prism. The...
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7207676 |
Image projection apparatus
A reflection type projector apparatus uses polarized beam filters that are resistant to fluctuations in incident angle as the light beam splitting elements and in which are provided for the blue...
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7190519 |
Plate-like polarizing element, a polarizing conversion unit provided with the element, and a projector provided with the unit
This specification discloses a polarizing. element for dividing light into first and second polarized lights differing in polarized state from each other by a polarizing dividing surface, directing...
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7170567 |
Projection type image display apparatus
A projection type image display apparatus includes a light source to emit light; a polarizing beam splitter to polarize the light received from the light source; a first lens array including a...
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7154671 |
High efficiency electromagnetic beam projector, and systems and methods for implementation thereof
This invention relates to electromagnetic wave beam paths, formation of the beam, illumination of programmable electromagnetic wave field vector orientation rotating devices (“PEMFVORD”) with...
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7148945 |
Optical device having a plurality of optical modulator units, projector equipping the same, and particular heat insulation
An optical device and a projector having the optical device is provided, which have a liquid-crystal display having, on an exit side, a first exit polarizer plate and a second exit polarizer plate...
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7147331 |
Method of driving a spatial light modulator and projector
To reduce the color break-up and to provide high quality projection images. A method of driving a spatial light modulator, including generating a sub-frame pulse signal for a first colored light R...
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7137708 |
Infra-red and ultraviolet filtration in projection systems
A method of generating a projection beam for projecting an image includes collimating the projection beam and filtering infra-red or ultraviolet radiation from the projection beam after the...
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7123313 |
Projection display device
To provide a highly reliable projection display device capable of being used for a long period of time without deterioration of a particular liquid crystal light valve, desirably, without any...
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7118230 |
Holder frame, optical device and projector
The invention provides a holder frame, optical device and projector which can prevent the substrate from deviating in position, the substrate from being compressed at the outer periphery and color...
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7114816 |
Fixing plate, optical device and projector
The invention provides a fixing plate, optical device and projector capable of preventing against color unevenness occurrence and pixel deviation. Specifically, in each of the four sides of a...
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7108377 |
Video light producing device and projection type video display
To provide a projection type video display capable of reliably preventing a double image from being produced. A first light flux producer for producing a first light flux and a second light flux...
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7106389 |
Optical shifter and projection type optical display system
An optical shifter includes first and second optical shifting sections, each of which can transmit an incoming light ray after having shifted its optical axis and which are arranged such that a...
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7104652 |
Image display device and projector
To provide an image display device and a projector having a brightness or an excellent utilization efficiency of the light by improving the display performance of a moving picture. A projector...
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7104650 |
Image display device having a transmissive panel and an optical isolator
A color management system for use with projection displays includes, for example, two or more analyzers positioned to receive light beams emitted from corresponding image assimilators, which each...
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7102822 |
High efficiency electromagnetic beam projector, and systems and methods for implementation thereof
This invention relates to electromagnetic wave beam paths, formation of the beam, illumination of programmable electromagnetic wave field vector orientation rotating devices (“PEMFVORD”) with...
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7090350 |
Optical projection system and method
An optical projection system can receive a red light beam, green light beam, and blue light beam. The optical projection system includes a color-combination prism, and the light beams respectively...
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7083286 |
Projector having improved structure for cooling optical system
A projector projecting an image onto a screen, comprises a lamp emitting light; an optical system having an optical synthesizer including a blue panel, a green panel and a red panel, and an optical...
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7081997 |
High efficiency electromagnetic beam projector, and systems and methods for implementation thereof
This invention relates to electromagnetic wave beam paths, formation of the beam, illumination of programmable electromagnetic wave field vector orientation rotating devices (“PEMFVORD”) with...
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7079209 |
Retardation compensation system and liquid crystal projector with different compensation for one of the primary colors
Three retardation compensators are provided for compensating the retardation of liquid crystal devices for red, green and blue light, respectively. Each of the retardation compensators is composed...
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7070281 |
Light source device and projection display
A light source device which employs a plurality of light emitting diodes for emitting different colors of light, and a projection display which incorporates the light source device provide for a...
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