Illumination source with variable divergence
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United States of America Patent
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Feb 3, 2015
Grant Date -
Jul 4, 2013
app pub date -
Sep 2, 2010
filing date -
Sep 2, 2010
priority date (Note) -
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Abstract
The illumination source has a LED light source (2) generating a first divergent light field (6). The light from the LED light source (2) is processed by a first optical element (10), in particular a first lens element, to generate a second divergent light field (19). The first divergent light field (19) is processed by a second optical element (20) having a variable lens variable focus in order to generate a third light field (35) whose divergence can be varied.
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