Lens structure having low pass filter characteristic
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United States of America Patent
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Feb 26, 2013
Grant Date -
Aug 23, 2012
app pub date -
Feb 17, 2011
filing date -
Feb 17, 2011
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Abstract
A lens structure includes a surface devoid of cusps that includes a seamless profile wherein the surface includes at least one segmented parabolic function forming a filtering surface for producing a controlled amount of spherical aberration.
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