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Abstract

A tool for polishing/fining an ophthalmic lens has a housing with an interior open at planar ends thereof. A cluster of rods is longitudinally aligned in sliding abutment within the housing, each rod of the cluster extending from one planar end of the housing to the other. One resiliently elastic diaphragm extends across one planar end and another resiliently elastic diaphragm extends across the other planar end. A cap has a rim which fixes the exterior perimeter of the first diaphragm against the top of the housing. The cap defines a pneumatic chamber longitudinally aligned between the exterior surface of the first diaphragm and the interior wall of the cap. A passage through the cap wall admits air under pressure into the chamber. A ring fixes the exterior perimeter of the other diaphragm against the bottom of the housing. Screws secure the cap and ring to the housing with the diaphragms therebetween. Pneumatic distortion of one diaphragm is transmitted by longitudinal displacement of individual ones of the cluster of rods to the interior surface of the other diaphragm. This causes the other diaphragm to dynamically comply to the surface of a lens as the other diaphragm and the lens are relatively laterally displaced.

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First Claim