Micro-optical device, spatial optical modulator and projector utilizing the micro-optical device
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United States of America Patent
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Jul 14, 2009
Grant Date -
Apr 24, 2008
app pub date -
Dec 8, 2005
filing date -
Jun 10, 2005
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Abstract
A micro-optical device includes a plurality of minute optical elements each having a curved surface operable to condense incident light. The minute optical elements are arranged at constant intervals. The curved surface is expressed by two or more F values. Each of the minute optical elements is a transmission lens element having the curved surface including a substantially flat part at a center of the transmission lens element, wherein the curved surface is convex or concave.
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