Short throw projection system and method
First Claim
1. A projection system for displaying a distortion corrected optical image on a projection screen based on input image data, comprising:
- (a) an electronic correction unit for receiving the input image data and generating pre-distorted image data;
(b) an image projector coupled to the electronic correction unit for receiving the pre-distorted image data and providing an pre-distorted optical image that corresponds to the pre-distorted image data;
(c) a reflection assembly that includes at least one of a planar and a curved mirror, said optical reflection assembly being positioned in the optical path of the pre-distorted optical image to produce a displayed optical image for projection on the projection screen; and
(d) said electronic correction unit being adapted to pre-distort the geometry of the input image data such that when said pre-distorted optical image based on said pre-distorted image data provided through the image projector and reflected within the optical reflection assembly, the optical, geometric, and alignment distortions associated with said image projector and said reflection assembly are eliminated in the displayed optical image.
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Accused Products
Abstract
A short throw projection system and method for displaying a corrected optical image on a projection screen based on input image data that includes an electronic correction unit, an image projector and a reflection assembly. The electronic correction unit receives the input image data and generates pre-distorted image data. The image projector receives the pre-distorted image data from the electronic correction unit and projects a pre-distorted optical image that corresponds to the pre-distorted image data or a pre-distorted image compensated by the projection optic distortion. The optical reflection assembly is positioned in the optical path of the pre-distorted optical image to project an optical image on the projection screen. The reflection assembly can consist of various combinations of curved and planar mirrors as desired. The electronic correction unit is encoded to pre-distort the geometry of the image represented by the image data such that when the pre-distorted optical image is projected through the image projector and reflected within the reflection assembly, the optical and geometric distortions associated with the image projector and the mirrors within the reflection assembly are eliminated in the displayed optical image.
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Citations
40 Claims
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1. A projection system for displaying a distortion corrected optical image on a projection screen based on input image data, comprising:
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(a) an electronic correction unit for receiving the input image data and generating pre-distorted image data;
(b) an image projector coupled to the electronic correction unit for receiving the pre-distorted image data and providing an pre-distorted optical image that corresponds to the pre-distorted image data;
(c) a reflection assembly that includes at least one of a planar and a curved mirror, said optical reflection assembly being positioned in the optical path of the pre-distorted optical image to produce a displayed optical image for projection on the projection screen; and
(d) said electronic correction unit being adapted to pre-distort the geometry of the input image data such that when said pre-distorted optical image based on said pre-distorted image data provided through the image projector and reflected within the optical reflection assembly, the optical, geometric, and alignment distortions associated with said image projector and said reflection assembly are 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, 21)
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22. A projection method for displaying a distortion corrected optical image on a projection screen based on input image data, comprising:
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(a) receiving input image data and generating pre-distorted image data;
(b) providing a pre-distorted optical image through an image projector, said pre-distorted optical image corresponding to the pre-distorted image data;
(c) reflecting the pre-distorted optical image in a reflection assembly comprising at least one of a planar mirror and a curved mirror to produce a displayed optical image for projection on the projection screen;
(d) wherein (a) further consists of pre-distorting the geometry of the input image data such that when said pre-distorted optical image based on said pre-distorted image data is provided through the image projector and reflected within the reflection assembly, the optical, geometric, and alignment distortions associated with the image projector and the reflection assembly are eliminated in the displayed optical image. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification