Multichannel optical power meter using a synchronous scanner
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United States of America Patent
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Sep 6, 2016
Grant Date -
Feb 26, 2015
app pub date -
Sep 26, 2013
filing date -
Aug 23, 2013
priority date (Note) -
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Abstract
Optical scanning systems and methods of controlling a resonant scanning mirror are disclosed. A rotatable mirror may oscillate about a rotation axis in response to a drive signal. A reference source may provide a reference light beam directed to the rotatable mirror. A reference detector may be disposed to receive the reference light beam reflected from the rotatable mirror twice during each oscillation of the rotatable mirror. A controller may set both an amplitude and a frequency of the drive signal based on an output of the reference detector.
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