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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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7429110 |
Projector-type image display apparatus
At least one exemplary embodiment is directed to a projector which includes several optical elements, reflective devices and beam splitters, arranged to reduce back reflection effects. At least one...
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7425932 |
Projection system featuring light source luminuous flux sensing and compensation
A projection system having a projection display ( 20 ), at least one light source ( 10 ), and a sensor means for sensing and compensating for changes in the luminous flux emitted by the at least...
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7419269 |
Display device and projector
To provide a display device and a projector capable of enhancing the quality of dynamic images, of reducing limitations on light sources, enhancing the utilization efficiency of light, and of...
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7416307 |
Optical apparatus and projection apparatus
An optical apparatus provided with a light combining prism having three light incident faces, receiving the three beams of light having different wavelength bands through the three light incident...
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7410261 |
Multicolor illuminator system
In an image projection system, there are at least two light illumination units producing illumination light beams of respective first and second primary colors. A first beamsplitter is disposed to...
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7407292 |
Projector and polarization member used in projector
Aspects of the invention can provide a polarization member that can include a reflection type polarization element that transmits, of an incident light, a linear polarization component in a...
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7404643 |
Projector having polarization conversion element
A projector has an illumination system, an electro-optical modulator, a projection optical system, and a scanning system. The illumination system has a light source, a first lens array, a second...
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7403335 |
Screen, Fresnel lens sheet used for the same, and image display apparatus using the same
The present invention provides a screen suitable for reducing the longitudinal dimension of a set. The present invention includes two prism sections. One is a totally reflective prism section ( 10...
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7401926 |
Space light modulating apparatus, projector including same, process for manufacturing microstructure element used in same, and microstructure element manufactured by the same process
A space light modulating apparatus includes a modulating unit that modulates incident light based on an image signal including a plurality of pixels and a light-shielding part placed between the...
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7396132 |
Prism assembly for use in optical devices and projector comprising such a prism assembly
A prism assembly for use in optical devices, which includes a total internal reflection (TIR) assembly for redirecting an incoming lightbeam, a color prism assembly for splitting the incoming...
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7394597 |
SLM projection display with series DMD illuminator
The addition of DMD illumination modulator(s) 702 in series with projection SLM(s) 706/709 to produce high-performance projection displays with improved optical efficiency, reliability, and...
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7390094 |
Method and apparatus to achieve a neutral dark state in image projection systems
An absorptive layer is added to an image display system. The absorptive layer is selected to compensate for tint in a black state of a displayed image. In a Liquid Crystal On Silicon (LCOS) based...
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7387391 |
Apparatus and method for mounting imagers on stress-sensitive polarizing beam splitters
An optical device that includes an optical element, an imager, and a prism bracket. The optical element includes an optical element having first and second prisms coupled together. The imager is...
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7377649 |
Projector arrangement
A projector arrangement is provided wherein a spectral splitting and recombination unit (SSR) includes a first and a second polarization selective or polarizing beam splitting device and a...
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7369318 |
Color display device having single illuminating system
A display device is disclosed herein. The display device includes a condenser unit, an illumination lens system, an optical modulation system, a filter system and a projection system. The condenser...
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7364303 |
Image display apparatus
At least one exemplary embodiment is directed to an image display apparatus, which can include multiple color combining elements, multiple light modulating elements, and a projection optical...
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7364302 |
Projection display system using multiple light sources and polarizing element for using with same
An image projection system has two illumination beams of different colors. A first polarizing beamsplitter (PBS) has first and second input faces. Light of the first color is incident on the first...
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7360905 |
Compact optical engine for very small personal projectors using LED illumination
According to various illustrative embodiments of the present invention, a device for a light projection system includes a single light emitting diode array comprising at least one green die, at...
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7360902 |
System and method for light source modulation
In one embodiment, a method for modulating light in an image display system includes generating a plurality of light beams. The amount of light beams that are received by a modulator is selectively...
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7360899 |
Beamsplitting structures and methods in optical systems
Various embodiments involving structures and methods for illumination can be employed, for example, in projectors, head-mounted displays, helmet-mounted displays, back projection TVs, flat panel...
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7357516 |
Lighting optical system
Disclosed is a lighting optical system, including: a ighting optical system, comprising, a light separating means for separating incident light into three colored lights according to wavelength...
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7357511 |
Stress birefringence compensation in polarizing beamsplitters and systems using same
Some projection systems use a polarization beamsplitter (PBS) for coupling light to and from an image-forming device. The PBS is typically formed with a reflective polarizing layer disposed between...
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7355797 |
Color display device using separate diffracted light and illumination light
A display device is disclosed. The display device includes a condenser unit, an illumination lens system, a plurality of diffractive light modulators, a mirror for separating illumination light...
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7350928 |
Projection display system
A projection display system comprises an illumination device, a prism assembly, a projection lens and a reflective light valve. The prism assembly has a first light incident surface, a first light...
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7347563 |
Apparatus for fixing a reflective or transmissive liquid-crystal display element to a prism member
At least one exemplary embodiment is directed to a projection display apparatus configured to project an image on a projection plane, the image being formed using light from a light source by an...
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7347559 |
Color video projection system employing reflective liquid crystal display devices
Methods and apparatuses for use in image projecting are provided. One apparatus includes a transflective polarizing beam splitter, a plurality of reflective liquid crystal light valves, and a...
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7347558 |
3D kernel and prism assembly design
A Liquid Crystal on Silicon (LCOS kernel for a light engine is configured in a kernel having light paths in three dimensions (3D kernel). The 3D kernel allows for designs that do not require...
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7344254 |
Projection system with a common light source sharing system
A projection display with a common light source sharing system for improved illumination uniformity is described. The common light source is coupled through a light-dividing prism to multiple...
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7331680 |
Illumination unit and projection type image display apparatus employing the same
An illumination unit with an improved color synthesis prism, which can synthesize light beams emitted from compact light sources, and a projection type image display apparatus employing the...
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7329007 |
Projector
A projector includes an illumination device, a color separation system, a light combining system, a projection system, and an optical adjustment portion. The color separation system separates the...
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7327521 |
Colored light synthesis element and projection device therewith
The invention includes a first incidence plane, a second incidence plane, a third incidence plane, a first synthesis plane and a second synthesis plane that are interiorly orthogonal to each other....
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7322703 |
Light emitting apparatus and projector
An light emitting apparatus which illuminates an illumination area has a first light source which emits a first light, a second light source which emits a second light, a wheel which is provided...
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7322702 |
Projecting display apparatus
A projector engine is provided with an illuminating optical system having an optical axis in parallel with a horizontal direction of a screen and a projecting optical system having an optical axis...
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7320521 |
Optical engine architectures
An optical engine architecture that operates as either a two-imager or a three-imager optical engine. The optical engine uses a first PBS cube and a second PBS cube having an optical axis between...
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7314279 |
Image generation unit
An image generation unit ( 10 ) is proposed comprising a first, a second, and a third light source unit (S 1 , S 2 , S 3 ) which are adapted in order to generate an emit respective first, second,...
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7306343 |
Image rotator
One embodiment of an image rotator includes an image reversion structure that rotates an image by a predetermined number of degrees, and securement structure adapted to removably secure the image...
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7303286 |
Projection display device
In a projection display device that is provided with a relay lens for converting flux that is emitted from a light source to a parallel flux for illuminating an image display element (DMD), and a...
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7300156 |
Prism assembly for separating light
A prism assembly is provided. The prism assembly comprises a first prism component having a triangular cross-section along an optical path, a second prism component having a first quadrilateral...
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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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7290886 |
Illuminating system and method for improving asymmetric projection
An illuminating system and method for improving asymmetric projection includes a light source producing a light beam to form a light path, a projection lens disposed in the light path, a light...
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7284865 |
Scrolling device with color separation and projection system incorporating same
A scrolling device with color separation and a projection system incorporating same are disclosed. The scrolling device comprises a scrolling shaft and a plurality of dichroic mirrors that are...
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7281804 |
Prism assembly for separating light
A prism assembly is provided. The prism assembly comprises a first prism component having a triangular cross-section along an optical path, a second prism component having a first quadrilateral...
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RE39859 |
Dichroic prism, prism unit, and projection display apparatus
At least one of four rectangular prisms in a dichroic prism is made longer than the other rectangular prisms. Parts of the rectangular surfaces of the long rectangular prisms partially protrude...
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7274522 |
Reflective optical system
A reflective optical system for projectors comprises a single integral piece of transparent optical molding having at least an incident surface, an exit surface, and two or more internal reflection...
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7270424 |
Color separation prism assembly
A color separation prism assembly. The color separation prism assembly includes a polarizing beam splitter and a plurality of prism blocks. The polarizing beam splitter is coated with a polarizing...
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7267445 |
Combiner, optical combiner module and digital light projection system using the same
A projection system includes a light source, a beam splitter module, a projection lens, and an optical combiner module includes at least one light valve for forming the image. A light beam emitted...
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7267443 |
Light-modulating projector
Exemplary embodiments of the invention provide a projector that can readily correct for chromatic aberration caused by, for example, a projecting lens without having to give a cross dichroic prism,...
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7261423 |
Combined light source for projection display
High pressure mercury arc lamps are commonly used as the illumination source in many projection systems. Such lamps may be deficient in either output power or spectrum, and so it is desirable to...
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7261422 |
Display projection apparatus
A projection display apparatus, including an illumination system, a light integrator, a first mirror module, a second mirror module, a beam condensing module, a total internal reflection (TIR)...
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