Method for lathing a lens

Details Method for lathing a lens Method for lathing a lens

1998-09-09

1999-08-03

Pitts, Andrea L.

Turning

Process of turning

82 47, B23B 100

Patent

active

059310685

ABSTRACT:
A method of lathing a lens, especially a contact lens, involves attaching the cylindrical blank of lens material to a first block of machineable plastic material, lathe cutting a desired first lens surface in the cylindrical blank, attaching the machined first lens surface of the blank to a second block, lathe cutting to remove the block of machineable plastic material, and lathe cutting a desired second lens surface in the blank. Both the first and second blocks may be adhered to the lens blank with an adhesive curable by ultraviolet radiation, and a two-piece block, composed of a head section and a body section, is disclosed.

REFERENCES:
patent: 4202848 (1980-05-01), Neefe
patent: 4455901 (1984-06-01), Council, Jr.
patent: 4681295 (1987-07-01), Haardt et al.
patent: 4924739 (1990-05-01), Ademovic
patent: 5740707 (1998-04-01), Svochak et al.
patent: 5800255 (1998-09-01), Hyslop et al.

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