Photoelectric detector
US4467202A · kind A · utility
4Cited by
5References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1982 |
| Grant date | Aug 21, 1984 |
| Priority date | — |
| Expiry date | Mar 1, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The photoelectric detector contains a photosensor or light-sensing element of a pyroelectric polymer film interposed by two disturbance-preventive chambers such that the two disturbance-preventive chambers are designed so as to equalize the pressures therein to ambient pressure. The photoelectric detector undergoes no or little disturbance from the ambient atmosphere, thereby permitting an accurate detection or measurement of light or beams detected by the photosensor or light-sensing element mounted in the detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.