Optical Johnson noise thermometry
US5098197A · kind A · utility
85Cited by
5References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 30, 1989 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Jan 30, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2005/066
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and device for direct, non-contact temperature measure of a body. A laser beam is reflected from the surface of the body and detected along with the Planck radiation. The detected signal is analyzed using signal correlation technique to generate an output signal proportional to the Johnson noise introduced into the reflected laser beam as a direct measure of the absolute temperature of the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.