Optical system of a radiation thermometer
US4664515A · kind A · utility
12Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1984 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Jul 20, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/0893
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to an optical system of a radiation thermometer in which the measuring optical system and the finder optical system can be focused. The central portion of the sub-mirror in Cassegrainian type optical system is used as a finder lens of the finder optical system. The third mirror is located between the main and sub-mirrors in order to reflect the light passed through the central portion of the sub-mirror. The light reflected on the third mirror is used for finder observation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.