Lightweight laminated photochromic lenses

Details Lightweight laminated photochromic lenses Lightweight laminated photochromic lenses

1979-03-07

1981-05-19

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

65DIG2, 351166, G02C 710

Patent

active

042681340

ABSTRACT:
A photochromic glass/plastic laminated lens of improved physical durability comprising a buried layer of photochromic glass, surface layers of optically clear plastic, and adhesive bonding layers of high strength but low elastic modulus between the buried glass and plastic surface layers, is described.

REFERENCES:
patent: 2263249 (1941-11-01), Rogers
patent: 3833289 (1974-09-01), Schuler
patent: 4168339 (1979-09-01), Kerko et al.
Pirog, J., "Reducing the Shrinkage of Resins During Curing", IBM Technical Disclosure Bulletin, vol. 12, No. 4, p. 594, 9/1969.

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