Toric lens fining apparatus

Details Toric lens fining apparatus Toric lens fining apparatus

1989-09-11

1992-02-04

Rachuba, M.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51124L, B24B 700

Patent

active

050850075

ABSTRACT:
A fining apparatus to finish the surface of an ophthalmic toric lens including a frame, a compound arcuate tool, a lens holding assembly, a motor for driving the tool in an orbital motion and the operative length of the tool is defined by the equation L=1/k.theta. for a half angle of orbit excursion .theta. between 0.25 and 2.25 degrees.

REFERENCES:
patent: 2371303 (1945-03-01), Liebowitz
patent: 2977724 (1961-04-01), Kennedy et al.
patent: 3900972 (1975-08-01), Rupp
patent: 4172338 (1979-10-01), Kojo et al.
patent: 4521994 (1985-06-01), Tusinski
patent: 4574527 (1986-03-01), Craxton
patent: 4656788 (1987-04-01), Rhoades et al.
patent: 4907373 (1990-03-01), Hunter et al.

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