Universal lens polishing tool, polishing apparatus and method of

Details Universal lens polishing tool, polishing apparatus and method of Universal lens polishing tool, polishing apparatus and method of

1986-12-17

1988-09-06

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

5116571, 51284R, B24B 700

Patent

active

047683082

ABSTRACT:
A universal polishing tool comprises a rigid cup having a circular rim to which is attached a relatively thin resilient polishing pad. In accordance with a method for using the tool, the tool is rotated about the axis of a support shaft causing the resilient polishing pad to move with respect to the surface which is being polished. The universal polishing tool is dynamically positioned as a function of time with respect to the surface being polished. The orientation and position as a function of time are determined by a control algorithm according to the geometry of the tool and the particular surface being polished and are controlled by means of a controllable positioning device. In the case of a spherical surface or a rotationally symmetric aspheric surface, the lens is rotated about its axis of symmetry during the polishing operation. In the case of a toric surface, the lens is oscillated about an axis which is normal to its center.

REFERENCES:
patent: 3492764 (1970-02-01), Dalton
patent: 3676960 (1972-07-01), Aspden
patent: 3877177 (1975-04-01), Taniguchi
patent: 4128968 (1978-12-01), Jones
patent: 4557075 (1985-12-01), Ullmann et al.
patent: 4590573 (1986-05-01), Hahn
patent: 4612736 (1986-09-01), Massard et al.
patent: 4653233 (1987-03-01), Brueck

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