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7614751 |
Illumination optical system and image display apparatus including the same
A lens array has a plurality of first minute optical elements which are one-dimensionally arranged in a predetermined arrange direction. Two of the plurality of first minute optical elements have...
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7611247 |
Illumination aperture for projection display
An optical system and method of increasing the contrast of a projected image. The optical system ( 1800 ) comprises a combination of aperture stops ( 1810, 1812 ) in at least one of the...
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7611246 |
Projection display and optical integrator
A projection display makes it possible to minimize the costs of a polarization conversion element, and concurrently makes it possible to improve illuminance nonuniformity and optical utilization...
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7588337 |
Optical system and image projection apparatus
An optical system is disclosed which is capable of improving of its contrast characteristic and displaying of images which have a brightness according to the brightness of the use environment. The...
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7585078 |
Illumination system capable of eliminating laser speckle and projection system employing the same
Provided are an illumination system capable of eliminating laser speckle and a projection system employing the illumination system. The illumination system includes a laser light source having at...
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7575328 |
Illumination optical system and image display apparatus making use thereof
An illumination optical system for illuminating a surface to be illuminated with a light beam from a light source, in a first plane which is parallel with the optical axis of the illumination...
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7540617 |
Illumination optical apparatus and projection type display apparatus
An illumination optical apparatus and a projection type display apparatus capable of preventing an image on boundary lines of a fly-eye lens from deviating from a designed position and preventing...
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7537347 |
Method of combining dispersed light sources for projection display
A method and system for combining light emitted by dispersed light sources for use in a projection display or similar system. A plurality of elongated and tapered light integrators are placed side...
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7533994 |
Light source array for LCD applications
A light source ( 100 ) includes a plurality of light emitting devices ( 101 ), each of which output light that is collimated by a first focusing structure ( 103 ). The collimated light is input to...
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7527382 |
Image projection lighting device with variable homogeneity
An image projection lighting device is provided which includes a variable homogenizing system. The variable homogenizing system may homogenize light projected by a lamp across a light valve. The...
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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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7503660 |
Light mixing member, multiple-lamp lighting equipment and projection video display
A reflection mixing member ( 13 ) has an alignment in which light from a first light source is incident on a reflecting surface ( 13 a ) and light from a second light source is incident on a...
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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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7438423 |
Illumination system and projection system incorporating same
An illumination system and a projection system incorporating same are disclosed. The illumination system includes a two-dimensional array of independently operable light sources. Each light source...
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7431461 |
Light propagation characteristic control apparatus, optical display apparatus, light propagation characteristic control program, optical display apparatus control program, light propagation characteristic control method and optical display apparatus control method
Exemplary embodiments of the invention provide a light propagation characteristic control apparatus which realizes to extend the light-intensity dynamic range and the number of levels, and is...
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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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7390097 |
Multiple channel illumination system
An illumination system, used for illuminating a target area, includes a plurality of light generating elements and a plurality of light collection units disposed to collect light from respective...
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7387389 |
Image display system and method
An image display device includes an image processing unit, a light source assembly, an optical modulator assembly, and a projection lens assembly. The image processing unit is configured to receive...
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7382539 |
Projector
A projector includes an illuminating device having a light source device, a first lens array having plural first small lenses, a second lens array having plural second small lenses corresponding to...
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7382534 |
Screen and projector with spherical lens array
A screen includes a lens array having a plurality of spherical lens elements. A first length of the spherical lens elements, along a first direction at substantially a center of each of respective...
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7367677 |
High efficiency lighting system, scrolling unit and projection system employing the same
A highly efficient lighting system, a scrolling unit, and a projection system adopting the highly efficient lighting system and the scrolling unit are provided. The scrolling unit has at least one...
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7350925 |
Total internal reflection Fresnel lens and optical system using the same
Described is an optical lens having a light-receiving surface facing a light source and a first structured surface opposite a first portion of the light-receiving surface. The first structured...
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7327519 |
Spatial light modulator and projector
A spatial light modulator has a modulating unit, a refracting part, and a flat part. The modulating unit includes a matrix of pixels, and a light-shielding portion between each of the pixels. The...
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7322700 |
Image display apparatus
An image display apparatus includes an indicating element which modulates or emits light as a pixel in accordance with image information. A displacement unit optically displaces a position of the...
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7301701 |
Compact polarization conversion system for optical displays
A compact polarization conversion system (PCS) for use in optical display systems is capable of emitting substantially polarized output light in response to unpolarized input light. The PCS...
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7249857 |
Device for fastening and adjusting position of integration rod of projection optical system
The present invention discloses a device for fastening an integration rod to an inner wall of a housing in a projection optical system and for adjusting a horizontal position and a vertical...
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7245429 |
Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet
A total reflecting prism portion is formed on an image generation source side of a Fresnel lens sheet which constitutes a rear projection type screen. The total reflecting prism portion is formed...
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7236285 |
Light modulation device and optical display device, and light modulation method and image display method
A projection type display device includes dichroic mirrors which separate the light from the light source into light of the three primary colors R, G and B, a plurality of color modulation light...
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RE39702 |
Projector
An output light from an a light source lamp unit 8 in a projection-type display apparatus projector illuminates liquid-crystal light valves 925 R, 925 G and 925 B for three colors...
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7222967 |
Image display optical system and projection type image display apparatus
An image display optical system according to the present invention has an illumination optical system, a plurality of image display elements, a color separation/combination optical system, and a...
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7198376 |
Illumination optical unit liquid crystal projector and production method of liquid crystal projector
A lighting optical unit having an optical system for irradiating light from a light-source lamp on a predetermined object in a uniform and/or convergent manner includes a reflector for reflecting...
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7185990 |
Projection display apparatus
A projection display apparatus for expanding and projecting an image, which is formed by an optical modulator, using a projection lens. A light source illuminates the optical modulator. A first...
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7175280 |
Projection display with polarization beam splitter
A projection system including a light source, a color separator, a scrolling unit, a light valve, a wire grid polarization beam splitter, and a projection lens unit is provided. The color separator...
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7150535 |
Lighting device and projector equipped with the same
A lighting includes: a light source device; a concave lens having a light-incident surface formed from a hyperboloid of revolution to make the luminous flux from the light source device almost...
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7131735 |
Light source device, optical device, and liquid-crystal display device
A light source device, comprising a light guide block that is provided with an inner wall capable of reflecting light and is shaped as a hollow component to form a light guide, and a point light...
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7128420 |
Image projecting device and method
An image projecting device is presented. The device comprises an SLM pixel arrangement; and two lens arrays. The lens arrays are respectively located at opposite surfaces of the SLM pixel...
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7125121 |
Image display apparatus
An image display apparatus includes an indicating element which modulates or emits light as a pixel in accordance with image information. A displacement unit optically displaces a position of the...
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7118229 |
Illumination optical system and projector using the same
The present invention provides a technique for readily changing the design of a projector. A projector comprises: an illumination optical system; a light modulation device; a projection optical...
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7113341 |
Spatial light modulator and projector
A spatial light modulator includes a prism group and satisfies either of the following conditions
d <0.95×λ/(2×( n...
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7108378 |
Method and devices for displaying images for viewing with varying accommodation
Light ( 22 ) is projected from an image projector ( 20 ), in response to an image information signal ( 18 ) and is controllably refracted in response to a first control signal ( 26 ), for...
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7097309 |
Lighting system and compact projection system
A projection system including a lighting system, a screen, a color filter separating light emitted from the lighting system according to wavelengths of the light, a first reflecting mirror...
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7095558 |
Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet
A total reflecting prism portion is formed on an image generation source side of a Fresnel lens sheet which constitutes a rear projection type screen. The total reflecting prism portion is formed...
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7059733 |
Display apparatus
A display apparatus is provided which can display different text/image information depending on the viewing angle and the viewer, display a high reality three-dimensional image viewable from any...
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7059729 |
Display apparatus and image pickup apparatus
A display apparatus comprises a screen which can rotate and provides a part for controlling view angle, a mirror group which comprises a plurality of mirrors arrayed in a ring form along a surface...
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7059723 |
Illumination optical system, image display optical system, projection type image display apparatus, and image display system
An illumination optical system that illuminates a plurality of image display elements comprises; a color separating optical system that separates light emitted from a light source into a plurality...
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7052141 |
Projector with improved lens apparatus
Exemplary embodiments of the present invention provide an illumination optical device including a light source unit having an arc tube, an ellipsoidal reflector, and a collimator lens, a first lens...
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7052140 |
Illumination device and projector equipped therewith
The illumination device in accordance with exemplary embodiments of the present invention is an illumination device including a light-emitting tube, an elliptical reflector, a parallelizing lens, a...
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7052139 |
Illumination unit and projector including the same
An illumination unit of the present invention includes: an ellipsoidal reflector having a first focus and a second focus; an arc tube; a collimating lens; a first lens array 120 having a...
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7048381 |
Cylindrical lens array for scrolling colors, projection system using same, and scrolling method
A cylindrical lens array for achieving color scrolling, a projection system using the cylindrical lens array, and a scrolling method. The cylindrical lens array is formed by arranging lens cells in...
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7040761 |
Image display apparatus, image display system, and illumination system
Conventionally, concentrated illumination of a central portion of an image (about 40-60% of the whole image) in which information such as letters and a picture tends to concentrate (centrally...
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