Imaging optics designed by the simultaneous multiple surface method
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United States of America Patent
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Oct 11, 2011
Grant Date -
Feb 18, 2010
app pub date -
Aug 7, 2009
filing date -
Aug 8, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
One embodiment of a method of calculating an optical surface comprises calculating a meridional optical line of the surface. A ray is selected that passes a known point defining an end of a part of the optical line already calculated. The optical line is extrapolated from the known point to meet the ray using a polynomial with at least one degree of freedom. The polynomial is adjusted as necessary so that the selected ray is deflected at the extrapolated optical line to a desired target point. The polynomial is added to the optical line up to the point where the selected ray is deflected. The point where the selected ray is deflected is used as the known point in a repetition of those steps.
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