Dual spectral imager with no moving parts
US9759611B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 2015 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Nov 24, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2005/0077
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device images radiation from a scene in two wavelength bands. An uncooled detector of the radiation includes two separate detector regions. A first filter associated with the first detector region allows radiation in a first wavelength band to be imaged on the first detector region. A second filter associated with the second detector region allows radiation in a second wavelength band to be imaged on the second detector region. An image forming optical component forms an image of the scene on the detector. Two wedge-shaped components are positioned at a fixed distance from the image forming optical component. Each wedge-shaped component directs radiation from the scene through the image forming optical component onto the detector. The radiation is imaged separately onto the two detector regions through an f-number of less than approximately 1.5. Imaged radiation on each detector region includes radiation in one respective wavelength band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.