Shaped gradient lens
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United States of America Patent
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Mar 4, 2014
Issued Date -
N/A
app pub date -
Dec 10, 2012
filing date -
Feb 6, 2009
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Abstract
One embodiment provides for a gradient lens having a first substantially hemispherical member comprising a first convex surface and a base and a second substantially hemispherical member projecting away from the base of the first hemispherical member and comprising a second convex surface. The gradient lens also includes a plurality of gradient layers disposed within the first hemispherical member, each gradient layer concentrically aligned to the first hemispherical member and comprising an index of refraction different than that of adjacent gradient layers.
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