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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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7614754 |
Optical projection apparatus
An optical projection apparatus including an illumination system, a reflective light valve, an imaging system, and a reflective component is provided. The illumination system is suitable for...
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7606640 |
Cooling apparatus and projection type display device
A cooling apparatus able to rotate cooling fans with required lowest limit speeds, and able to suppress power consumption and generated noise includes a cooling unit for cooling an object to be...
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7600874 |
Pixelated color wobulation
A display system includes a mechanism to provide for simultaneous pixelated color with a spatial light modulator. Also included is a mechanism to project the simultaneous pixelated color to create...
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7597446 |
Illumination optical system and image projection apparatus
An illumination optical system is disclosed which capable of uniformly illuminating a surface to be illuminated. The illumination optical system comprises a polarization conversion element which...
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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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7595848 |
Reflective liquid crystal display apparatus
At least one exemplary embodiment is directed to a reflective liquid crystal display apparatus which comprises: a polarization beam splitter having a polarization split film used as both a...
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7589797 |
High efficiency liquid crystal display projection system
A transmitting-type liquid crystal display projection system including a planar light source which emits planar white beam or planar R/G/B beams in succession is provided. A first polarization...
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7585079 |
Optical imaging method and projector utilizing the same
An imaging method. A light beam passes through a first lens set, a second lens set, an imaging device and a projection lens set. The light beam is focused in a first position. The focused light...
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7583340 |
Phase difference compensating device and liquid crystal apparatus using the same
A transparent base plate supports a first compensating layer, which is adapted to compensate for a phase difference due to liquid crystal molecules having undergone normal orientation in a liquid...
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7581838 |
Optical projector and image display apparatus using the same
Image disturbance called speckle noise occurs when an image generator has a small effective screen size and a projection lens has a small effective diameter. The present invention is intended to...
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7581837 |
HDR displays and control systems therefor
A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. Elements of the light modulator may be controlled to adjust the...
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7580083 |
Color-filterless LCD
A color-filterless liquid crystal display (LCD) device that can be employed not only in small size LCD units but also in large size LCD units is provided. The color-filterless LCD device includes a...
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7576813 |
Liquid crystal device and projector
There is provided a liquid crystal device that displays an image through a liquid crystal. The liquid crystal device includes: a plurality of pixels that constitutes the image; a light-shielding...
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7570240 |
Method and apparatus to minimize lamp flicker and increase contrast ratio in projection devices
A variable retarder is inserted in a polarized light beam. The retardance of the variable retarder is increased when the light beam increases in brightness and is decreased when the light beam...
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7568805 |
Illumination unit and image projecting apparatus employing the same
An illumination unit includes multiple light source units to emit light having different wavelengths, and a synthesizing prism to synthesize the emitted light. The synthesizing prism includes a...
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7568803 |
Aerial display system with low cost plastic spherical mirror
An aerial display system comprising inexpensive optical elements and a highly brightened LCD display or similar video image display types provides floating images in an expensive enclosure. In the...
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7567319 |
LCoS display with a color pixel array with multiple reflective layers and fabrication method thereof
A method of fabricating an LCoS display with a color pixel array comprises a step of disposing reflective layers between various color filter layers. The reflective layers are used as etching stop...
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7564505 |
Optical device and projector equipped with the same
An optical device includes a plurality of light modulators that modulate a plurality of color light components according to image information about each color light component and a combining...
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7557868 |
Liquid crystal projector device
A liquid crystal projector device of the present invention includes three image generating units for generating image light of three primary colors. Each image generating unit has a polarizing...
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7557867 |
Optical engine and image projecting apparatus having the same
An optical engine is provided that includes a base frame, a video device assembly for generating a video signal, and a driving substrate detachably coupled to the video device assembly for driving...
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7556383 |
Projection display apparatus using liquid cooling and air cooling
A projection display apparatus comprises a liquid crystal unit assembly which includes a liquid crystal panel, an incident side polarizing plate and an emitting side polarizing plate which are...
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7554635 |
Liquid crystal projector, liquid crystal device and substrate for liquid crystal device
Red incident light is reflected on a mirror ( 19 ) and linearly polarized by a polarizer ( 26 R). Linearly polarized incident light enters a transmissive liquid crystal device ( 11 R), in which...
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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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7551250 |
Liquid crystal display device and projection display apparatus
A liquid crystal display device capable of obtaining a high contrast ratio within a range of entry angles of source light to an optical modulation device of a projection display apparatus has a...
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7548672 |
Fiber-based light source device
The present invention provides a fiber-based light source device, which includes a plurality of first, second or third light-emitting devices for respectively emitting a plurality of first, second...
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7542101 |
Dioptric element array substrate, image display device and image display apparatus
A dioptric element array substrate 10 includes: a first dioptric element array 2 having a plurality of first dioptric elements 2 a arranged two-dimensionally; a second dioptric element array ...
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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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7532261 |
Projection system with polarization direction rotating member
An exemplary projection system includes a light source unit, a polarization direction rotating member, a polarization direction restoration polarizer, an LCD panel, and a projection lens. The light...
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7529383 |
Image input apparatus
An image input apparatus which reconfigures a single reconfigured image from a plurality of low-resolution, object reduced images formed in a specified region on the light detecting element by the...
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7528906 |
Achromatic polarization switches
An achromatic polarization switch (APS) acts on linear polarized light to provide orthogonal polarized output states over a range of visible wavelengths. In a first switching state, the APS is...
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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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7518662 |
Contrast enhancement for liquid crystal based projection systems
Described are tilted compensators for compensating for in-plate and out-of-plane retardances of LC panels in their dark states, including a single tilted biaxial retarder or compound retarder...
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7518570 |
Method and apparatus for miniaturizing digital light processing displays using high refractive index crystals
A digital light processing display system is provided with fewer major moving parts and a smaller form factor. A high-intensity, high-frequency strobe light is used to direct a pulse of light...
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7517095 |
Image display apparatus
Image display apparatus comprising a projector, at least one primary modulator ( 4,6,8 ) for modulating light, an auxiliary modulator ( 36 ) for modulating the light modulated by the primary...
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7511773 |
Polarized light conversion apparatus
A polarized light conversion apparatus comprises a polarization device, a light source, a reflection device and a phase changing device. The polarization device includes a light-transmissible body...
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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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7500758 |
Cameras and video players having image projection capabilities
Projection capabilities are provided in consumer electronic devices that are used for the capture or reproduction of images, such as digital still image cameras, digital video cameras, cellular...
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7480013 |
Projection type display apparatus
One of preferred embodiments of a projection type display apparatus comprises a housing including a first surface inclined at an angle of 45 degrees with respect to an optical axis of the incoming...
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7474371 |
Method of improving the flatness of a microdisplay surface, liquid crystal on silicon (LCoS) display panel and method of manufacturing the same
A method of improving the flatness of a microdisplay surface. A reflective mirror layer and a raised layer are formed in order on a semiconductor substrate. The raised layer may comprise a buffer...
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7468769 |
Retardation compensator and single-panel type color liquid crystal projector
A form birefringence to compensate the phase retardation caused by a liquid crystal device has a retardation compensation film that is composed of alternately deposited high and low refractive...
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7466369 |
Portable projector using a transmissive microdisplay
A portable micro-display projector uses a light transmissive liquid crystal display system wherein light is projected co-linearly from a light source through, and is selectively altered by, a...
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7466368 |
Image projection apparatus and adjusting method used for the same
An image projection apparatus includes a first reflection type liquid crystal display device for modulating and reflecting red light, a second reflection type liquid crystal display device for...
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7461940 |
Illumination system for displaying images without color break
The invention concerns an image display system comprising: a light source emitting an illuminating laser beam, a spatial light modulator controlled by control video signals corresponding to a...
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7458687 |
High efficiency digital cinema projection system with increased etendue
A digital cinema projection apparatus having an illumination source with a first etendue value for providing polarized polychromatic light. A first lens element lies in the path of the polarized...
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7453544 |
Liquid crystal display device and projection type display apparatus
A liquid crystal display device having a high quality able to prevent deterioration etc. of a liquid crystal panel even when a liquid crystal panel used in a light valve of a projector etc. is...
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7450193 |
LCOS panel assembly of projection system and image matching method having quarter wave plate holder rotatably supported about panel support by respectively slots and protrusions
There is provided a LCOS panel assembly of a projection system comprising: a LCOS panel; a panel support supporting the LCOS panel and coupled to the quad side; a quarter-wave plate provided at the...
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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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7443657 |
Dual position display in an electronic device
An apparatus and method are disclosed for an electronic device ( 100 ) to incorporate two housing members ( 104, 106 ) to expose a first portion ( 112 ) of a display or screen ( 110 ) when closed....
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7436476 |
High durability and high performance polarization optics using a low-elasticity organic layer
Described is an optical compensator device that can maintain a high degree of performance in the demanding environment of projection display. A mounting process involves using a sealant between...
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