Condensing element, array, and methods thereof
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United States of America Patent
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Aug 7, 2012
Grant Date -
Apr 22, 2010
app pub date -
Oct 20, 2008
filing date -
Oct 20, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A condensing element, array, and methods thereof include a bowl-shaped outer section and a lens-shaped inner section. The outer section provides substantially total internal reflection of light entering at an input surface of the outer section. The inner section is recessed within the outer section at a distance from the entering light that is within the focal position of the inner section. The outer and inner sections are configured in a preferred embodiment so that substantially all the light exiting the condensing element is substantially parallel to the optical axis of the entering light. In an alternate embodiment, the configuration of the condensing element can be modified to selectively adjust the desired degree of collimation of the exiting light.
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