Apparatus and method for production of single element toric lens

Details Apparatus and method for production of single element toric lens Apparatus and method for production of single element toric lens

1988-09-22

1989-09-05

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51124L, 51 97R, 51284R, B23C 305

Patent

active

048626465

ABSTRACT:
A system for generating toric optical surfaces having two different radii (or axes) of curvature with accurate centration. A multiplicity of such surfaces for use as lenses are simultaneously created. Each surface is mounted transversely to the periphery of a spinning disk of a radius equal to one of the desired arcs. Generating, lapping and polishing tools are rotated about an axis perpendicular to the disk's axis but displaced from the disk's axis by an amount equal to the difference between the radii of the desired arcs.

REFERENCES:
patent: 1426147 (1922-08-01), Bugbee
patent: 2589488 (1952-03-01), Fowler
patent: 2890551 (1959-06-01), Dalton
Zhdanov Technological Equipment Plant, pp. 45-48, Dec. 1972.

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