High efficiency light valve projection system with decreased perception of spaces between pixels and/or hines
First Claim
1. An electronic image projection system, comprising:
- a light source;
a light valve means for forming an image on which information can be present as pixels or lines, said light valve means including one of;
a single light valve having perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines and real dead spaces between pixels, or lines defined by actual non-information bearing spaces between pixels or lines, anda plurality of light valves having at least one of real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines and perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines;
means for projecting the image formed by said light valve means onto a viewing area; and
means to substantially eliminate perception of perceived dead spaces and real dead spaces between pixels or lines in the image projected by the single light valve and to substantially eliminate perception of at least one of real dead spaces between pixels or lines and perceived dead spaces in the image projected by the plurality of light valves.
1 Assignment
0 Petitions
Accused Products
Abstract
A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each "pixel area" of the LCD and storage elements to store video signal data for each pixel, with optically shielded "dead spaces" between pixels to eliminate electric field crosstalk and non-information-bearing light bleed through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature. In one embodiment of the invention, use of a multi-color LCD with a stepped cavity, producing different thicknesses of LCD for the different wavelengths that pass through it, allows a linear correspondence between the wavelengths passing through the LCD to produce true black, high contrast and CRT-like color rendition. A dichroic mirror arrangement is used to overlap differently colored pixels in the projected image. Use of lens arrays to expand pixels, where necessary, eliminating spaces between pixels, creating a continuous image with no apparent stripes or dots. A special venetian-blind type of screen is also disclosed and methods for using the system to view three-dimensional video are also explained.
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Citations
168 Claims
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1. An electronic image projection system, comprising:
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a light source; a light valve means for forming an image on which information can be present as pixels or lines, said light valve means including one of; a single light valve having perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines and real dead spaces between pixels, or lines defined by actual non-information bearing spaces between pixels or lines, and a plurality of light valves having at least one of real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines and perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines; means for projecting the image formed by said light valve means onto a viewing area; and means to substantially eliminate perception of perceived dead spaces and real dead spaces between pixels or lines in the image projected by the single light valve and to substantially eliminate perception of at least one of real dead spaces between pixels or lines and perceived dead spaces in the image projected by the plurality of light valves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 162, 163, 164, 165, 166, 167, 168)
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144. An electronic image projection system, comprising:
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a light source; a light valve means having a plurality of pixels or lines arranged in a matrix for forming a black and white image, said light valve means including one of; a single light valve having perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines and real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines; and a plurality of light valves having at least one of real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines and perceived dead spaces caused by presence or relatively darker pixels or lines adjacent to relatively lighter pixels or lines; a solid state pixel or line storage element associated with each pixel or line for storing a respective pixel or line control signal; control means associated with said solid state pixel or line storage elements for controlling the operation thereof, said control means, pixel or line storage elements and light valve forming an active matrix light valve; and means for projecting the image formed by said light valve onto a viewing area; and means to substantially eliminate perception of perceived dead spaces and real dead spaces between pixels or lines in the image projected by the signals light valve and to substantially eliminate perception of at least one of real dead spaces between pixels or lines and perceived dead spaces in the image projected by the plurality of light valves.
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145. An electronic image projection system comprising:
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a light source; a light valve means having a plurality of pixels or lines arranged in a matrix for forming an image, said light valve means including one of; a single light valve having perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines and real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines; and a plurality of light valves having at least one of real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines and perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines; a solid state pixel or line storage element associated with each pixel or line for storing a respective pixel or line control signal; control means associated with said solid state pixel or line storage elements for controlling the operation thereof, said control means, pixel or line storage elements and light valve forming an active matrix light valve; and means for projecting the image formed by said light valve onto a viewing area; and means to substantially eliminate perception of perceived dead spaces and real dead spaced between pixels or lines in the image projected by the single light valve and to substantially eliminate perception of at least one of real dead spaces between pixels or lines and perceived dead spaces in the image projected by the plurality of light valves such that all or part of pixel or line images are duplicated.
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146. An electronic image projection system, comprising:
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a light source; a light valve means having a plurality of pixels or lines arranged in a matrix for forming an image, said light valve means including one of; a single light valve having perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines and real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines; and a plurality of light valves having at least one of real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines and perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines; a solid state pixel or line storage element associated with each pixel or line for storing a respective pixel or line control signal; control means associated with said solid state pixel or line storage elements for controlling the operation thereof, said control means, pixel or line storage elements and light valve forming an active matrix light valve; and means for projecting the image formed by said light valve onto a viewing area; and means to substantially eliminate perception of perceived dead spaces and real dead spaces between pixels or lines in the image projected by the single light valve and to substantially eliminate perception of at least one of real dead spaces between pixels or lines and perceived dead spaces in the image projected by the plurality of light valves.
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147. An electronic image projection system, comprising:
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a light source; a light valve means having a plurality of pixels or lines arranged in a matrix for forming an image, said light valve means including one of; a single light valve having perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines and real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines; and a plurality of light valves having at least one of real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines and perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines; a solid state pixel or line storage element associated with each pixel or line for storing a respective pixel or line control signal; control means associated with said solid state pixel or line storage elements for controlling the operation thereof, said control means, pixel or line storage elements and light valve forming an active matrix light valve; means for projecting the image forming by said light valve onto a viewing area; means to substantially eliminate perception of perceived dead spaces and real dead spaces between pixels or lines in the image projected by the single light valve and to substantially eliminate perception of at least one of real dead spaces between pixels or lines and perceived dead spaces in the image projected by the plurality of light valves such that pixel or line images are expanded.
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148. An electronic image projection system, comprising:
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a light source; a light valve means having a plurality of pixels or lines arranged in a matrix for forming a black and white image; a single light valve having perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines and real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines; and a plurality of light valves having at least one of real dead spaces between pixels or lines defined by non-information bearing spaces between pixels or lines and perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines; a solid state pixel storage element associated with each pixel or line for storing a respective pixel or line control signal; control means associated with said solid state pixel or line storage elements for controlling the operation thereof, said control means, pixel or line storage elements and light valve forming an active matrix light valve; means for projecting the image formed by said light valve onto a viewing area; means to substantially eliminate perception of perceived dead spaces and real dead spaces between pixels or lines in the image projected by the single light valve and to substantially eliminate perception of at least one of real dead spaces between pixels or lines and perceived dead spaces in the image projected by the plurality of light valves such that all or part of the pixel or line images are duplicated.
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149. An electronic image projection system, comprising:
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a light source; a light valve means having a plurality of pixels or lines arranged in a matrix for forming a black and white image, said light valve means including one of; a single light valve having perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines and real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines; and a plurality of light valves having at least one of real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines and perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines; a solid state pixel or line storage element associated with each pixel or line for storing a respective pixel or line control signal; control means associated with said solid state pixel or line storage elements for controlling the operation thereof, said control means, pixel or line storage elements and light valve forming an active matrix light valve; and means for projecting the image formed by said light valve onto a viewing area; means to substantially eliminate perception of perceived dead spaces and real dead spaces between pixels or lines in the image projected by the single light valve and to substantially eliminate perception of at least one of real dead spaces between pixels or lines and perceived dead spaces in the image projected by the plurality of light valves such that all or part of said pixels or lines are expanded.
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- 150. A display system comprising an optical means for superimposing the red, green and blue components of a produced image to form a full color image with absence of apparent dots, lines or pixels.
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160. An electronic image display system, comprising:
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means for producing an image comprising pixels or lines, wherein said means for producing comprises one of; a single image forming means having perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines and real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines; and a plurality of image forming means having at least one of real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines and perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines; and means to substantially eliminate perception of perceived spaces and real dead spaces between pixels or lines in the image. - View Dependent Claims (161)
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Specification