Electronic and computational correction of chromatic aberration associated with an optical system used to view a color video display
First Claim
Patent Images
1. A method for correcting a chromatically variant optical aberration of an optical system interposed in a display system between a viewer eye position and a display surface of a color video display device to form a virtual image of the display surface, comprising the steps of:
- providing color component image display control signals for a plurality of color components of an image to be displayed by the color video display device on the display surface;
defining a distortion function for a particular color component of the color video display device based on the chromatically variant optical aberration of the optical system; and
differentially transforming the color component image display control signals by applying the distortion function to a color component image display control signal for the corresponding particular color component to introduce chromatically variant distortion in the image displayed on the display surface that compensates for the optical chromatic aberration of the optical system in the virtual image.
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Abstract
Methods and systems are presented in which at least one geometric distortion function is separately determined for application to a particular primary color component of a color video display to cause a geometric distortion that compensates for lateral chromatic aberration in an optical system used to view the display.
108 Citations
25 Claims
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1. A method for correcting a chromatically variant optical aberration of an optical system interposed in a display system between a viewer eye position and a display surface of a color video display device to form a virtual image of the display surface, comprising the steps of:
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providing color component image display control signals for a plurality of color components of an image to be displayed by the color video display device on the display surface; defining a distortion function for a particular color component of the color video display device based on the chromatically variant optical aberration of the optical system; and differentially transforming the color component image display control signals by applying the distortion function to a color component image display control signal for the corresponding particular color component to introduce chromatically variant distortion in the image displayed on the display surface that compensates for the optical chromatic aberration of the optical system in the virtual image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 22)
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8. A method for correcting a chromatically variant optical aberration of an optical system interposed in a display system between a viewer eye position and a display surface of a color video display device to form a virtual image of the display surface, comprising the steps of:
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providing color component image display control signals for a plurality of color components of an image to be displayed by the color video display device on the display surface; defining a different distortion function for each color component of the color video display device based on the chromatically variant optical aberration of the optical system; and differentially transforming the color component image display control signals by applying the distortion functions to the color component image display control signals to introduce chromatically variant distortion in the image displayed on the display surface that compensates for the optical chromatic aberration of the optical system in the virtual image. - View Dependent Claims (9, 10, 11, 12, 23, 24, 25)
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13. A method for correcting a chromatically variant optical aberration of an optical system interposed in a display system between a viewer eye position and a display surface of a color video display device to form a virtual image of the display surface, comprising the steps of:
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defining a distortion function for a particular color component of the color video display device based on the chromatically variant optical aberration of the optical system; and differentially positioning display elements for different color components of the color video display device by applying the distortion function to a layout pattern of the display elements for the corresponding particular color component to introduce chromatically variant distortion in an image displayed on the display surface that compensates for the optical chromatic aberration of the optical system in the virtual image. - View Dependent Claims (14)
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15. A method for correcting a chromatically variant optical aberration of an optical system interposed in a display system between a viewer eye position and a display surface of a color video display device to form a virtual image of the display surface, comprising the steps of:
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defining a different distortion function for each color component of the color video display device based on the chromatically variant optical aberration of the optical system; and differentially positioning display elements for the color components of the color video display device by applying the distortion functions to layout patterns for the display elements corresponding to the color components to introduce chromatically variant distortion in an image displayed on the display surface that compensates for the optical chromatic aberration of the optical system in the virtual image. - View Dependent Claims (16)
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17. Apparatus for displaying an image to a viewer through an optical system having a chromatically variant optical aberration, comprising:
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a color video display device having a display surface disposed in the apparatus such that the optical system is interposed between the display surface and the viewer to form a virtual image of the display surface at a viewer eye position; and display driver circuitry electrically coupled to the color video display device to provide first color component image display control signals for a plurality of different color components of the color video display device, the display driver circuitry having at least one input for receiving second color component image display control signals from an image source, and circuitry which differentially transforms one of the first and second color component image display control signals to introduce different geometric distortion into each color component of an image displayed by the color video display device on the display surface, the different geometric distortions causing chromatically variant distortion in the image displayed on the display surface that compensates for the optical chromatic aberration of the optical system in the virtual image. - View Dependent Claims (18, 19, 20, 21)
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Specification