Infrared detector with vibrating chopper
US4485305A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1982 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Aug 12, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/48137
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An infrared ray detector comprising an infrared ray detecting body, a pair of opposing portions, a bimorph vibrator connected to the pair of opposing portions for intermitting infrared rays incident upon the detector, and a housing containing these elements, the housing being provided with an opening for incidence of infrared rays. The pair of opposing portions comprise infrared ray transmitting portions and infrared ray non-transmitting portions. The infrared ray transmitting portions in one of opposing portions is periodically overlapped by the bimorph vibrator with the infrared ray transmitting portions or infrared ray non-transmitting portions in the other opposing portion, so that incident infrared rays are intermitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.