Optical sensor
US8253945B2 · kind B2 · utility
15Cited by
12References
46Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2005 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Mar 27, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/284
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical sensor having a sapphire body is disclosed. A hollow in the sapphire body defines a surface which is used as a surface of a Fabry-Perot cavity. Interferometry is used to detect changes in the length of the Fabry-Perot cavity, and hence changes in, for example, the temperature or pressure of an environment in which the sensor is placed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.