Lens design method and resulting aspheric lens

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

1990-07-24

1991-09-24

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351159, 351161, 351167, G02C 702, G02C 704

Patent

active

050509810

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: 4564484 (1986-01-01), Neefe
patent: 4640595 (1987-02-01), Volk
patent: 4710193 (1987-12-01), Volk

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