Lens design method and resulting aspheric lens

Details Lens design method and resulting aspheric lens Lens design method and resulting aspheric lens

1991-07-11

1993-06-15

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351160R, 351161, G02C 704

Patent

active

052203590

ABSTRACT:
An aspheric lens for providing improved vision and a method for generating such a lens is described. The lens provides a sharp image focus while minimizing image aberrations. The method utilizes ray tracing techniques in conjunction with Modulation Transfer functions to accurately account for the total corrective lens-eye system. The lens may be in the form of a contact lens, an intraocular lens, a natural lens or a spectacle lens, and is suitable for correcting myopia, presbyopia, astigmatism and other focusing problems. The lens is characterized by a hyperbolic or parabolic surface which functions to reduce spherical aberrations and minimize the retinal image spot size.

REFERENCES:
patent: 3482906 (1969-12-01), Volk
patent: 4199231 (1980-04-01), Evans
patent: 5050981 (1991-09-01), Roffman

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