Optoelectronics system for measuring environmental properties having plural feedback detectors
US4760250A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1986 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Sep 29, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0621
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optoelectronic system for measuring at least one property of an environment includes a first light source for generating light at a first wavelength, first feedback means coupled to the first light source for maintaining the light from the first light source at a substantially constant level, a second light source for generating light at a second wavelength, second feedback means coupled to the second light source for maintaining the light from the second light source at a substantially constant level, a sensor to be placed in an environment, the sensor being responsive to a change in a property of an environment, the sensor generating first and second optical output signals representing a change in the light from the first and second light sources, respectively, due to a property of the environment, an optical waveguide for transmitting light from the first and second light sources to the sensor, a detector for detecting the first and second optical output signals, an optical waveguide for transmitting the first and second optical output signals from the sensor to the detector and apparatus coupled to the detector for determining the value of the property of the environment fro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.