TOOL FOR POLISHING CONVENTIONAL AND FREE-FORM OPTICAL SURFACES
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United States of America Patent
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Issued Date -
May 5, 2011
app pub date -
Jul 7, 2009
filing date -
Jul 8, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A tool for polishing optical surfaces including a rigid base having a spherical surface which carries a resilient cushion with a polishing face. The diameter of the rigid base is between 50 and 65 mm, the radius of curvature of the spherical surface is between 54 and 60 mm, the thickness of the resilient cushion is between 13 and 16 mm and the resistance to compression of the resilient cushion is substantially between 0.08 and 0.15 bar at 10% compression and substantially between 0.55 and 0.8 bar at 70% compression. The tool can be used for polishing an optical surface, particularly an ophthalmic lens, and more particularly a free-form lens.
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