Optical system having reduced pointing-error noise
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United States of America Patent
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Oct 4, 2016
Grant Date -
Aug 13, 2015
app pub date -
Feb 12, 2014
filing date -
Feb 12, 2014
priority date (Note) -
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Abstract
An apparatus having a variable angle light source characterized by a pivot point, a variable response optical receiver, and a first optical system is disclosed. The variable response optical receiver receives light generated by the light source on a receiving surface, the receiver generating a signal indicative of an intensity of light that impinges on a receiving surface. The first optical system images the pivot point to a fixed point relative to the receiver surface. In one aspect of the invention the first optical system is chosen such that light from the variable angle light source covers more& than half the receiving surface. The variable angle light source can include a gain chip in a semiconductor laser having a pivot point located substantially on a facet of the gain chip.
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