B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
51/17
B24B 13/00 (2006.01) B24B 13/04 (2006.01)
Patent
CA 1299874
A universal lens polishing tool, polishing apparatus and method of polishing 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.
553146
Atkinson Leland G. III
Moore Duncan T.
Kirby Eades Gale Baker
University Of Rochester
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