Optical system with particular optical distortion

Details Optical system with particular optical distortion Optical system with particular optical distortion

2005-04-19

2005-04-19

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

Including a nonspherical surface

Reexamination Certificate

active

06882483

ABSTRACT:
An optical system satisfies conditions related to the optical distortion at the maximum image height and at eighty and sixty percent of the maximum image height in order to reduce the actual observed distortion of an image, for example, an image on a monitor, by balancing the optical distortion with TV distortion. The optical system may be a single focus lens that includes, in order from the object side: a diaphragm stop; and first and second lens components. An aspheric equation that includes a nonzero aspheric coefficient of order three or higher may determine an aspheric shape of a lens surface of the second lens component. Both lens components may be made of plastic.

REFERENCES:
patent: 2000-258684 (2000-09-01), None

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