Devices and methods for optical power sensing scanning laser projectors
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United States of America Patent
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Oct 24, 2017
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N/A
app pub date -
Jun 22, 2016
filing date -
Jun 22, 2016
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Abstract
Devices and methods are described herein to measure optical power in scanning laser projectors. In general, the devices and methods utilize a filter component and photodiode to measure optical power being generated by at least one laser light source, with the filter component configured to at least partially compensate for the non-uniform electric current response of the photodiode. Such a configuration facilitates accurate optical power measurement using only one photodiode, and thus can facilitate accurate optical power measurement in a relatively compact device and with relatively low cost.
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