Optical device, method for producing master for use in producing optical device, and photoelectric conversion apparatus
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United States of America Patent
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Nov 13, 2012
Grant Date -
Jun 3, 2010
app pub date -
Dec 9, 2009
filing date -
Aug 21, 2006
priority date (Note) -
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Abstract
In an optical device, a number of structures having higher portions or lower portions are arranged at a fine pitch equal to or shorter than a wavelength of visible light on a surface of a base. Each of the structures is arranged to form a plurality of arc track rows on the surface of the base, and to form a quasi-hexagonal lattice pattern, and the structure has an elliptical cone or truncated elliptical cone shape having a major axis in a circumferential direction of the arc tracks.
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