Achromatic ophthalmic lenses

Details Achromatic ophthalmic lenses Achromatic ophthalmic lenses

1996-07-18

1999-01-12

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

264 27, 351166, 351177, G02C 702, B29D 1100

Patent

active

058596852

ABSTRACT:
A compound ophthalmic lens having improved chromatic aberration is provided which includes a polymerized resin superstrate lens formed on a substrate lens. The chromatic dispersion characteristics of the resin, as well as its refractive index, are matched to the substrate lens to obtain the desired Abbe number, lens power and thickness of the finished lens, and to render the interface between the substrate lens and the superstrate lens substantially invisible. The color dispersion of the substrate lens is compensated for by the superstrate lens which has a relatively low Abbe number and has an opposite power from the substrate lens.

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patent: 4679918 (1987-07-01), Ace
patent: 5147585 (1992-09-01), Blum
patent: 5178800 (1993-01-01), Blum
patent: 5219497 (1993-06-01), Blum
patent: 5253111 (1993-10-01), Chiba et al.
patent: 5512371 (1996-04-01), Gupta et al.

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