Method for making ophthalmic lenses

Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Optical fiber – waveguide – or preform

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264 17, 264 24, 425808, B29D 1100

Patent

active

053727550

ABSTRACT:
A finished ophthalmic lens is made by using a pre-manufactured lens or lens wafer as a part of a mold for making the finished lens. A polymerizable lens material is injected between the lens or lens wafer and a conventional mold member and a trio of indexers are used to rotate the conventional mold member relative to the lens wafer, to adjust the spatial relationship between the conventional mold member and the lens or lens wafer, and to control the angular relation between them. The assembly is subjected to irradiation and the radiation cures the polymerizable lens material and fuses it to the lens wafer so that the lens or lens wafer becomes an integral part of the finished lens. A finished lens is made in less than one hour.

REFERENCES:
patent: 3380718 (1968-04-01), Neefe
patent: 4190621 (1980-02-01), Greshes
patent: 5232637 (1993-08-01), Dasher et al.

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