Method and system for sensing light using interferometric...

Details Method and system for sensing light using interferometric... Method and system for sensing light using interferometric...

2005-02-24

2008-12-02

Lee, Hwa (Andrew) S (Department: 2886)

Optics: measuring and testing

By light interference

Having partially reflecting plates in series

C356S454000

Reexamination Certificate

active

07460246

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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