Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1983-09-01
1985-10-15
Corbin, John K.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
351168, 351172, 351176, G02C 702, G02C 706, G02C 708
Patent
active
045470499
ABSTRACT:
A method and apparatus for a multi-element lens system which combines pre-selected radial differences of separate ophthalmic lenses with non-mating curvatures into a single, flexibly conforming laminated unit. The system comprises a primary lens element of structural rigidity and at least one additive lens having an initially non-mating curvature formed of a thin, pliable plastic for providing a complemental ophthalmic correction or addition when flexibly conformed and bonded thereto. The assembled lens is therein capable of providing virtually any optical correction or addition by the determination and application of the appropriate additive lens having the requisite radial difference. In this manner, the ophthalmic inventory of practitioners can be reduced by providing a series of additive lenses in graduated radial differences which may be bonded to any of a stock of ophthalmic lens configuration with different initial curvatures. This method allows the practitioner to define ophthalmic corrections in terms of radial differences which may then be laminated into a single lens assembly or superimposed upon existing lenses no matter what the lens curvature.
REFERENCES:
patent: 2618200 (1952-11-01), Clave et al.
patent: 3195145 (1965-07-01), Tisher et al.
C & H Contact Lens Inc.
Cantrell Thomas L.
Corbin John K.
Moore Stanley R.
Sugarman Scott J.
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