Method and system for sensing light using interferometric elements
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United States of America Patent
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Dec 2, 2008
Grant Date -
Mar 30, 2006
app pub date -
Feb 24, 2005
filing date -
Sep 27, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Certain embodiments of the invention provide a light sensor comprising at least one interferometric element that absorbs light in at least one wavelength. The interferometric element comprises a first surface and a second surface substantially parallel to the first surface. The second surface is spaced a gap distance from the first surface in a direction substantially perpendicular to the first surface. The light wavelength absorbed is dependent on the gap distance. The interferometric element further comprises a temperature sensor. The temperature sensor is responsive to changes in temperature of at least a portion of the interferometric element due to absorption of light by the interferometric element.
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