Spectral rejection device for forming an image on an optical sensor
US6621577B2 · kind B2 · utility
4Cited by
5References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2001 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jun 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A spectral rejection device for forming an image on an optical sensor, including a system for forming a beam of light rays coming from an observed scene, a scanning system, a system for spectrally dispersing the beam in a direction, at least one mask disposed on the path of the dispersed rays to intercept a narrow band of wavelengths, and a system for combining the dispersed rays into a beam of parallel rays focused by a lens onto an optical sensor.The invention applies in particular to the spectral analysis of a luminous flux coming from an observed scene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.