Apparatus for measuring pressure by absorption spectrum change
US4270050A · kind A · utility
34Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1979 |
| Grant date | May 26, 1981 |
| Priority date | — |
| Expiry date | Sep 7, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/178
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fiber optical measuring device for measuring physical magnitudes comprises a transducer having a body constituting an optical modulator. The optical properties of the modulator are dependent on the mechanical forces acting on the modulator. The optical property utilized is the pressure dependency of at least one light-absorption edge of the absorption spectrum of the modulator material. Optical fibers are used for leading light into the modulator and for leading out light that has passed through the modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.