Method for designing a lens system and resulting apparatus
View Patent ↗A method for designing a lens system that allows one design tolerance to be relaxed to enhance other lens characteristics where the aberration(s) resulting from the relaxed design tolerance can be corrected by image processing subsequent to the acquisition of the raw image containing the aberration(s). In addition, wide-angle and/or catadioptric lenses so designed can be used with cameras or other image sensors. Further, the raw image can be corrected by an image correction processor within or external to a camera system, comprised of specialized circuitry and/or an appropriately configured general-purpose computer.
1. A method for designing a lens system comprising:
relaxing a first design tolerance for said lens system, said first design tolerance specifying an allowable amount of f-theta deviation in a raw image produced through said lens system, said allowable amount of f-theta deviation capable of being corrected by an image correction processor; and
enhancing a lens system characteristic that would have been limited by a less relaxed first design tolerance.
2. A lens system designed in accordance with the method of claim 1 .
3. An image capture system equipped with the lens system of claim 2 , and configured to capture said raw image.
4. An image correction processor configured to correct said allowed aberration from at least a portion of said raw image captured through the lens system of claim 2 .
5. The image correction processor of claim 4 wherein said raw image is corrected to generate a corrected image having less of said allowed aberration than that in said raw image.
6. The image correction processor of claim 4 wherein a portion of said raw image is corrected to generate a view being substantially free of said allowed aberration.
7. The image correction processor of claim 4 further comprising a programmed computer configured to correct said allowed aberration in said portion.
8. The image correction processor of claim 4 further comprising a specialized circuitry configured to correct said allowed aberration in said portion.