Infra-red radiation detectors
US4474036A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1983 |
| Grant date | Oct 2, 1984 |
| Priority date | — |
| Expiry date | Jan 21, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2270/0509
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An infra-red radiation detector comprises an envelope in the form of a dewar (1,2) in which a vacuum space (12) is present between an outer wall (2) and inner wall (1) cooled by a cooling element (20). Gas molecules are gettered from the vacuum space (12) by at least one shaped molecular-sorbent porous body (10,10') having a major surface which fits onto and is bonded to a cooled surface (e.g. of a radiation shield 8) associated with the cooled inner wall (1). The shaped getter body (10,10') is secured (e.g. by epoxy adhesive) at its major surface to this cooled surface in a heat-exchange relationship so as to be cooled by the cooling element (20) during operation of the detector. The shaped getter body (10,10') is preferably a moulded annulus of synthetic zeolite material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.