Composite lenses
First Claim
Patent Images
1. A composite plastic optical quality lens, comprising:
- a plastic lens preform portion of optical quality material; and
a cured plastic attached portion of a resin composition that is bonded to said plastic lens preform portion, said cured plastic attached portion having higher scratch resistance than said plastic lens preform portion, and said resin composition having a refractive index within about 0.05 units of the refractive index of said plastic lens preform portion.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for making improved optical quality lenses is described which includes arranging a mold having a molding surface, a curable optical quality resin composition, and a plastic lens preform of optical quality material such that the resin composition is disposed between, and in contact with, the plastic lens preform and the mold; upon curing, the resin composition forms a cured plastic attached portion that is bonded to the plastic lens preform. The resin composition and plastic lens preform are selected such that the attached portion has a higher scratch resistance, a lower chromatic aberration, and/or a higher ease of edging than the lens preform.
-
Citations
29 Claims
-
1. A composite plastic optical quality lens, comprising:
-
a plastic lens preform portion of optical quality material; and a cured plastic attached portion of a resin composition that is bonded to said plastic lens preform portion, said cured plastic attached portion having higher scratch resistance than said plastic lens preform portion, and said resin composition having a refractive index within about 0.05 units of the refractive index of said plastic lens preform portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A composite plastic optical quality lens comprising:
-
a plastic lens preform portion comprising an aromatic polycarbonate polymer; and a cured plastic attached portion of a resin composition comprising (a) a first resin portion comprising a bisallyl carbonate and (b) a second resin portion selected from the group consisting of one or more multi-functional acrylates, one or more methacrylates, and a mixture of one or more multi-functional acrylates and one or more methacrylates;
said cured plastic attached portion having higher scratch resistance than said plastic lens preform portion, and said resin composition having a refractive index within about 0.05 units of the refractive index of said plastic lens preform portion. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
-
Specification