Replica lens having a glass lens body

Details Replica lens having a glass lens body Replica lens having a glass lens body

1988-01-14

1989-07-04

Arnold, Bruce Y.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

350409, 351166, 351177, G02B 110, C03C 1700

Patent

active

048445940

ABSTRACT:
A replica lens having a glass lens body 1 and a cured layer 2 of a synthetic resin composition provided thereon in which the refractive indices n.sub.1, n.sub.2 of the glass lens body and the synthetic resin composition, respectively, as well as the shrinkage factor k of the synthetic resin composition upon curing thereof satisfy the relationship n.sub.1 =n.sub.2 (1-k)+k.

REFERENCES:
patent: 3533897 (1970-10-01), Robbins, Jr. et al.
patent: 3873191 (1975-03-01), Veret et al.
patent: 3876734 (1975-04-01), Howden
patent: 3917766 (1975-11-01), Howden
patent: 4227950 (1980-10-01), Spycher
patent: 4657354 (1987-04-01), Kobayashi

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