Thermal expansion measurements using Fabry-Perot etalons
US6860633B2 · kind B2 · utility
1Cited by
13References
22Claims
0Family size
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Key dates
| Filing date | Nov 30, 2001 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Feb 26, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining the thermal expansion coefficient of a substance comprises, determining at each of two or more temperatures the absolute position of more than one resonant interference peaks of a Fabry-Perot etalon whose optical path is defined by said substance and calculating said coefficient from observed difference(s) in wavelength or frequency of said positions at said two or more temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.