Achromatic ophthalmic lenses
First Claim
Patent Images
1. An ophthalmic lens comprising:
- a substrate lens having a predetermined power and refractive index; and
a superstrate lens, said superstrate lens having an opposite power and having a refractive index which is less than or equal to the refractive index of the substrate lens, wherein the Abbe number of the ophthalmic lens is higher than the Abbe number of the substrate lens and the superstrate lens.
3 Assignments
0 Petitions
Accused Products
Abstract
A compound ophthalmic lens having improved chromatic aberration is provided which includes a polymerized resin superstrate lens formed on a substrate lens. The chromatic dispersion characteristics of the resin, as well as its refractive index, are matched to the substrate lens to obtain the desired Abbe number, lens power and thickness of the finished lens, and to render the interface between the substrate lens and the superstrate lens substantially invisible. The color dispersion of the substrate lens is compensated for by the superstrate lens which has a relatively low Abbe number and has an opposite power from the substrate lens.
92 Citations
30 Claims
-
1. An ophthalmic lens comprising:
-
a substrate lens having a predetermined power and refractive index; and a superstrate lens, said superstrate lens having an opposite power and having a refractive index which is less than or equal to the refractive index of the substrate lens, wherein the Abbe number of the ophthalmic lens is higher than the Abbe number of the substrate lens and the superstrate lens. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A method of fabricating an ophthalmic lens comprising the steps of:
-
providing a substrate lens having a predetermined power and refiactive index; depositing a polymerizable resin layer of uneven thickness on a surface of the substrate lens, wherein the resin layer is configured to form a lens of opposed power having a refractive index which is less than or equal to the refractive index of the substrate lens; and polymerizing the resin layer to form an ophthalmic lens, wherein the Abbe number of the ophthalmic lens is higher than the Abbe number of the substrate lens and the polymerized resin layer. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. A new ophthalmic lens comprising:
-
a substrate lens having a predetermined power and refractive index; and a superstrate lens, said superstrate lens having an opposite power and having a refractive index which is less than or equal to the refractive index of the substrate lens; wherein said superstrate lens is directly bonded to said substrate lens without utilizing an adhesive and wherein the Abbe number of the ophthalmic lens is higher than the Abbe number of the substrate lens and the superstrate lens.
-
-
30. A method of fabricating an ophthalmic lens, comprising the steps of:
-
providing a substrate lens having a predetermined power and refractive index; depositing a polymerizable resin layer of uneven thickness on a surface of the substrate lens, wherein the resin layer is configured to form a lens of opposed power having a refractive index which is less than or equal to the refractive index of the substrate lens; and polymerizing the resin layer to form an ophthalmic lens, wherein said resin layer is directly bonded to said substrate lens without utilizing an adhesive and wherein the Abbe number of the ophthalmic lens is higher than the Abbe number of the substrate lens and the polymerized resin layer.
-
Specification