Aspherical optical surfaces and optical scanners
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United States of America Patent
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Oct 13, 2015
Grant Date -
Jan 23, 2014
app pub date -
Jul 17, 2013
filing date -
Jul 19, 2012
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Abstract
Optical systems with aspherical optical elements are described. The aspherical optical elements have surfaces in which the in-plane radius of curvature spatially varies and the in-plane cross section surface profile is characterized in that the multiplication of the cosine of the incidence angle raised to a non-zero exponent by the in-plane radius of curvature varies less than twenty percent between any two points on the in-plane cross section surface profile.
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