Method of manufacturing an optical element
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United States of America Patent
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Nov 24, 2015
Grant Date -
May 16, 2013
app pub date -
Nov 19, 2012
filing date -
Sep 29, 2006
priority date (Note) -
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Abstract
A method for manufacturing an optical element including: a surface including a plurality of grooves arranged concentrically. Each of the grooves includes a bottom surface with a predetermined width, a side surface, and a curved surface with a predetermined curvature radius. The bottom surface extends in a radius direction of the grooves. The curved surface connects the bottom surface and the side surface.
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