Optical pressure sensor and a method and apparatus for making such a sensor
US5009107A · kind A · utility
6Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1990 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Jan 30, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/241
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical absolute pressure sensor constituted by a body made of a substance having photoelastic properties and provided with at least one internal duct extending parallel to the longitudinal direction of said body, the pressure inside said duct being substantially zero and the ends thereof being closed in sealed manner. The invention also applies to a method of making the sensor, to apparatus for implementing the method, and to a sensor constituting the product of the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.