Optical lens preform, optical lens, and method of making optical lens
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United States of America Patent
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Nov 16, 2010
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app pub date -
Nov 29, 2007
filing date -
May 9, 2001
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Abstract
has obtained a desired outer diameter; and an optical lens fabrication step of cutting thus drawn optical lens preform and accordingly fabricating an optical lens. With this making method, since there are paired beveling surfaces disposed, it is possible to suppress a drawing-induced distortion.
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