Image projection system and method
First Claim
1. An off-axis projection system for displaying an optical image on a display surface based on input image data, comprising:
- (a) an image processing unit for receiving the input image data and generating distortion-compensated image data;
(b) a projection light engine coupled to the image processing unit for receiving the distortion-compensated image data and projecting a distortion-compensated optical image that corresponds to the distortion-compensated image data; and
, (c) an optical reflection assembly coupled to the projection light engine, said optical reflection assembly comprising at least one curved mirror, said curved mirror being positioned in the optical path of the distortion-compensated optical image emerging from a projection lens for producing a displayed optical image with reduced distortion on the display surface;
wherein, said image processing unit is adapted to distortion-compensate the optical image represented by the input image data such that when said distortion-compensated optical image is projected through the projection light engine and reflected off the optical reflection assembly, the optical and geometric distortions associated with said projection light engine and the optical reflection assembly are substantially eliminated in the displayed optical image.
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Abstract
An image projection system and method is presented for optically projecting an image onto a display surface with visually correct geometry and optimum image quality. The projection system includes an image processing unit for receiving the input image data and generating distortion-compensated image data to compensate for ensuing spatial distortions in the projection system, a projection light engine for receiving the distortion-compensated image data and projecting a distortion-compensated optical image that corresponds to the distortion-compensated image data; and, an optical reflection assembly comprising at least one curved mirror positioned in the optical path of the distortion-compensated optical image emerging from the projection light engine for producing a displayed optical image with reduced distortion on the display surface. The image processing unit distortion-compensates the input image data such that the optical and spatial distortions associated with the projection light engine and optical reflection assembly are substantially reduced in the displayed optical image.
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Citations
38 Claims
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1. An off-axis projection system for displaying an optical image on a display surface based on input image data, comprising:
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(a) an image processing unit for receiving the input image data and generating distortion-compensated image data;
(b) a projection light engine coupled to the image processing unit for receiving the distortion-compensated image data and projecting a distortion-compensated optical image that corresponds to the distortion-compensated image data; and
,(c) an optical reflection assembly coupled to the projection light engine, said optical reflection assembly comprising at least one curved mirror, said curved mirror being positioned in the optical path of the distortion-compensated optical image emerging from a projection lens for producing a displayed optical image with reduced distortion on the display surface;
wherein, said image processing unit is adapted to distortion-compensate the optical image represented by the input image data such that when said distortion-compensated optical image is projected through the projection light engine and reflected off the optical reflection assembly, the optical and geometric distortions associated with said projection light engine and the optical reflection assembly are substantially eliminated in the displayed optical image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An off-axis projection method for displaying an optical image on a display surface of an off-axis projection system based on input image data, comprising the steps of:
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(a) receiving input image data and electronically generating distortion-compensated image data;
(b) providing a distortion-compensated optical image that corresponds to the distortion-compensated image data; and
,(c) reflecting the distortion-compensated optical image in an optical reflection assembly to produce a displayed optical image for projection on the display surface, said assembly comprising at least one curved mirror, said curved mirror being positioned in the optical path of the distortion-compensated optical image emerging from the projection lens for producing a displayed optical image with reduced distortion on the display surface;
wherein step (a) comprises distortion-compensating the optical image represented by the image data such that when said distortion-compensated optical image is reflected off the optical reflection assembly, the optical and geometric distortions associated with the projection system are substantially eliminated in the displayed optical image. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification