OPTICAL POWER MEASUREMENT DEVICE
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United States of America Patent
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Issued Date -
Dec 25, 2014
app pub date -
Jun 24, 2014
filing date -
Jun 24, 2013
priority date (Note) -
Abandoned
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Abstract
An optical power meter including a mechanical interface that establishes a predetermined air gap, while avoiding physical contact with the sensitive area of the DUT. The mechanical interface is formed such that the test instrument contacts the DUT in the non-sensitive region over an area large enough to establish contact pressure that is well within the strength of the DUT's material. Accordingly, the non-contacting optical element enables optical power to be collected and relayed with a quantifiable and repeatable power loss. A high-NA, large area optical element is used to collect and relay optical power accurately while maintaining low sensitivity to axial or radial alignment.
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