Infrared radiation detector
US8664606B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 2011 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Apr 23, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/061
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An infrared radiation detector includes: a cryostat having a cold finger ensuring heat exchange with a cold source and a window transparent to infrared radiation to be detected; a mechanically fixed cold plane in heat exchange with the cold finger; a detector unit comprising at least a detector circuit sensitive to the infrared wavelength range to be detected, and in direct or indirect heat exchange with the cold plane; and a mechanically fixed cold shield in heat exchange with the cold plane and limiting stray radiation. The cold shield is rotationally symmetrical. An inside wall of the cold shield has a succession of reliefs distributed in at least one helical pattern. A definition axis of the helical pattern coincides with the axis of revolution of the cold shield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.