Method and apparatus for tunable interferometer utilizing...

Details Method and apparatus for tunable interferometer utilizing... Method and apparatus for tunable interferometer utilizing...

2005-03-15

2005-03-15

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

By light interference

Having partially reflecting plates in series

C359S578000, C359S618000

Reexamination Certificate

active

06867868

ABSTRACT:
An air-density-tuned interferometer includes: a hermetically sealed enclosure; a front window coupled to the hermetically sealed enclosure; an interferometer residing within the hermetically sealed enclosure; and a pressure changing device coupled to the hermetically sealed enclosure. The interferometer within the enclosure includes: a first glass plate optically coupled to the front window; a first reflective coating coupled to the first glass plate; a second reflective coating optically coupled to the first reflective coating; a second glass plate coupled to the second reflective coating; and a plurality of spacers coupled to the first and second glass plates, forming an optical interometric cavity therein. The pressure changing device manipulates the gas pressure within the cavity. The air-density-tuned interferometer does not incorporate additional elements into the optical path within the interferometer and that does not disturb or move any of the optical components disposed within or associated with this optical path.

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patent: 6809865 (2004-10-01), Chen

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