Apparatus for the production of an ophthalmic lens

Details Apparatus for the production of an ophthalmic lens Apparatus for the production of an ophthalmic lens

1986-11-25

1988-02-09

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51101LG, 5116571, 356376, 356380, B24B 4912

Patent

active

047233761

ABSTRACT:
Apparatus for the positional control of the edge grinding of an ophthalmic lens to a desired peripheral shape is effected by a control computer which processes and stores data representative of a pattern which delineates the peripheral shape of the lens. The data is derived by rotating a linear image sensor about an axis passing through a support for a pattern which delineates the required shape. The sensor generates pixel data which is processed and stored by the control computer for use for selective control of a lens periphery grinder.

REFERENCES:
patent: 2184156 (1939-12-01), Bowles
patent: 2184161 (1939-12-01), Stockbarger
patent: 4096684 (1978-06-01), Okaba
patent: 4203259 (1980-05-01), Haddock
patent: 4557076 (1985-12-01), Helbrecht
patent: 4622462 (1986-11-01), Eaton
patent: 4633618 (1987-01-01), Kobayashi
patent: 4656590 (1987-04-01), Ace

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