Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1999-02-22
2000-10-24
Sugarman, Scott J.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
351166, 351177, G02C 710
Patent
active
06135595&
ABSTRACT:
An inexpensive, high-performance, color vision correcting plastic eyeglass lens comprises a partial reflection film for partially reflecting light, or a coloring agent for partially absorbing light, or a combination thereof, so that an intended color vision rectifying spectral characteristic curve can be established in or imparted to the lens.
REFERENCES:
patent: 4070097 (1978-01-01), Gelber
patent: 5015523 (1991-05-01), Kawashima et al.
patent: 5369453 (1994-11-01), Chen et al.
patent: 5574517 (1996-11-01), Pang et al.
patent: 5774202 (1998-06-01), Abraham et al.
Kasai Yoshihiko
Otsuki Toshiya
Takeshita Katsuyoshi
Yano Kunihiko
Seiko Epson Corporation
Sugarman Scott J.
World Munsell Co., Ltd.
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