Optical corrector
AssigneeMcDonnell Douglas Corporation
InventorsJohn A. Van Hoogstrate, Richard A. Buchroeder
Life of this patent
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Abstract
An optical projection system is provided wherein a light valve supplies an aperture consisting of spatially separate colors for projection by a plurality of projection lenses to a projection plane. A color correction lens is placed at a selective pupil of the projection system wherein microscopic amounts of selective power are applied to at least one of the spatially seperated colors of the image at the selected pupil to cause a shift of the wavelength to bring all the wavelengths of the spatially separate colors to a common focus.
Claims14
An optical projection system comprising;
- (a) an pupil surface consisting of spatially separate color segments;
- (b) at least one projection means for receiving light from the pupil surface and directing the image to a projection plane;
- and
- (c) color correcting means placed at a selective pupil image of the optical projection system that contains the spatially separate color segments of the pupil surface for shifting the image plane of at least one of the spatially separate color segments such that all the spatially separate colors have a common focus in the projection plane.
An optical projection system comprising;
- (a) an pupil surface consisting of sPatially separate color segments;
- (b) at least one projection means for receiving light from the pupil surface and directing the image to a projection plane;
- and
- (c) color correcting means placed at a selective pupil image of the optical projection system that contains the spatially separate color segments of the pupil surface for shifting the image plane of at least one of the spatially separate color segments such that all the spatially separate colors have at least two image planes.
Dependencies are inferred from the claim text.