Lens generating tool for generating a lens

Details Lens generating tool for generating a lens Lens generating tool for generating a lens

1988-10-06

1990-02-20

Rose, Robert

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51266, 407118, 407119, 407 7, 407 34, 82 111, 82173, 82 12, B24D 706

Patent

active

049014803

ABSTRACT:
A tool for generating a prescription surface in a plastic eyeglass lens. A pair of replaceable, cutting elements are mounted on a tool having a spindle. Each cutting element has a solid polycrystalline diamond material forming a cutting edge for progressively shaving a surface on the backside of the lens as the tool is swing back and forth. The surface so generated need only be polished, without the conventional abrasive finishing steps.

REFERENCES:
patent: 2958119 (1960-11-01), Stansfield et al.
patent: 3374586 (1968-03-01), Stone
patent: 3405433 (1968-10-01), Williams
patent: 3685210 (1972-08-01), Bowen
patent: 3733665 (1973-05-01), Spriggs
patent: 3831236 (1974-08-01), Coburn et al.
patent: 4457765 (1984-07-01), Wilson
patent: 4743144 (1988-05-01), Shikata
Coburn Optical Laboratory Supplies, Fall 1988, pp. 1-43, Coburn Optical Industries, Inc., Muskogee, Okla.

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