Composite ophthalmic lenses

Details Composite ophthalmic lenses Composite ophthalmic lenses

G - Physics

02

B

G02B 1/00 (2006.01) B32B 17/10 (2006.01) C08G 18/12 (2006.01) C08G 18/66 (2006.01) C09J 175/08 (2006.01) G02B 1/04 (2006.01) G02C 7/02 (2006.01)

Patent

CA 2073477

Abstract of the Invention This invention is directed to the production of glass-plastic lenses consisting of a thin glass element bonded to a relatively thick transparent lens or lens preform made of poly(diethylene glycol)bis(allyl carbon- ate) by a transparent thermoset, polyurethane adhesive layer of optical quality having an elongation at rupture of at least 200% and an elastic modulus in the range of 0.13-10 MPa and at 100% elongation.

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