Infrared detector
US6430941B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Sep 21, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B9/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An infrared radiation (IR) detector device that comprises a casing, having an optical window for admitting radiation; a cold shield having a detector mounted therein and having a filter mounted between the optical window and the detector; a cooler tube in coiled configuration, having an inlet in communication with a pressurized gas source and an expansion nozzle located in the vicinity of the detector and a pre-cooling jacket, enclosing the cooler tube and having a gas inlet in the vicinity of the detector and a gas discharge vent to the outside. The cooler tube comprises a first section, beginning at the gas inlet, a second section, terminating at the expansion nozzle, and a communication between the first and second sections. The pre-cooling jacket comprises a first section, housing the first section of the cooler tube, a second section, housing the second section of the cooler tube, and a communication between the first and second sections. The first section of the jacket bounds an inner space which encloses the second section of the jacket, whereby the second section of the cooler tube, contained in the second section of the jacket, is also entirely contained in the inner space…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.