Glass multifocal ophthalmic lens with polarizing element and method of making
AssigneeBMC Industries, Inc.
InventorsRay D. Schwenzfeier, Donald W. Hanson
Life of this patent
Estimating the term…
Abstract
The present invention includes a glass multifocal light polarizing ophthalmic lens having a glass multifocal lens portion with a multifocal element fused to a convex outer surface of the multifocal lens portion, a single vision lens portion opposing the multifocal lens portion and a polarizing film sandwiched between the multifocal lens portion and the single vision lens portion. The present invention also includes a method for making the glass multifocal light polarizing ophthalmic lens.
Claims7
A multifocal glass light polarizing ophthalmic lens comprising:
- a glass multifocal lens portion having a convex outer surface, a concave inner surface and a multifocal element fused to the convex outer surface;
- a glass single vision lens portion having a convex inner surface and a concave outer surface;
- and
- a light polarizing film having a convex surface that adheres the concave inner surface of the glass multifocal lens portion and having a concave surface that adheres the convex inner surface of the glass single vision lens portion.
A method for making a glass multifocal light polarizing lens comprising:
- providing a glass multifocal lens portion having a convex outer surface and a concave inner surface and having a multifocal element fused to the convex outer surface;
- providing a glass single vision lens portion having a convex inner surface and a concave outer surface;
- providing a light polarizing film that is sandwiched between the glass multifocal lens portion and the glass single vision lens portion;
- applying an adhesive to the concave surface of the multifocal lens portion;
- contacting the polarizing film to the adhesive;
- applying an adhesive to an exposed surface of the polarizing film;
- contacting the convex surface of the single vision lens portion to the adhesive;
- curing the lens;
- and
- finishing the concave outer surface of the single vision lens portion in accordance with a wearer's prescription.
Dependencies are inferred from the claim text.