Fiber optical luminescence measuring system for measuring physical quantities with time- or frequency-divided signal information
US4562348A · kind A · utility
20Cited by
5References
25Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 31, 1983 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Mar 31, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fiber optical luminescence measuring system for measuring a change in a physical quantity employs a transmitter/receiver unit and a sensor unit for the physical quantity optically linked by at least one optical fiber. The sensor unit is arranged to emit luminescent light with at least two different decay time constants, where the quotient between the intensities of emitted luminescent light having the different decay times corresponds to a measure of the quantity to be measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.