Process for finishing optical lenses and apparatus therefor

Details Process for finishing optical lenses and apparatus therefor Process for finishing optical lenses and apparatus therefor

1988-04-28

1990-05-01

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51266, B24B 700

Patent

active

049207008

ABSTRACT:
A process and apparatus for finishing optical lenses including processing steps of smoothing and polishing of the lens, suitable in particular for the production of ophthalmic lenses, characterized by a special feature of replacing, after completion of the smoothing, the smoothing pad by a polishing and changing over the spent lapping compound recovering and recirculating means from that for the smoothing compound to that designated for a polishing compound, in order to effect thereafter the polishing of the lens on the same processing machine.

REFERENCES:
patent: 3638366 (1972-02-01), Gamache
patent: 3782045 (1974-01-01), Kanda
patent: 4197678 (1980-04-01), Roll et al.
patent: 4733502 (1988-03-01), Braun

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