Spectrum modulation encoding sensor system for remotely detecting a physical magnitude, and operating by reflection
US5184010A · kind A · utility
5Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 5, 1991 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Sep 5, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/268
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to an optical sensor using spectrum modulation encoding and operating by reflection, the sensor is connected by an optical fiber (10) to a light source and to a demodulator, and it comprises a collimator lens (16), a first polarizer (18), a sensitive component (20) subjected to the physical magnitude to be measured, a second polarizer (32), and catadioptric reflection means (28) such as a corner of a cube. The sensor of the invention enables all of the light flux to be reinserted into the optical fiber (10) after passing through the sensor without any disturbance from interference phenomena.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.