Active background control for infrared cameras
US7307251B2 · kind B2 · utility
2Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2005 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Oct 8, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/099
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light source is injected into an optical path of a camera to provide a controlled background to insure optimum uniformity of performance of the camera. An optical system, camera, image background measurement system, source intensity control, and light source comprise a closed loop control around the light source to control an operating point of the camera. Intensity of the light source is decreased as intensity of a background flux is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.