Patent ID: 7598506
Filing Date: 2009-10-06
Classification: G01J

Abstract:
1. A low-temperature blackbody radiation system comprising: a blackbody enclosure having an optical port formed therein; a cold element provided within the blackbody enclosure adjacent the optical port, the cold element configured to emit thermal radiation through the optical port, wherein the cold element includes a specular dark mirror-type thin film optical coating configured to provide wavelength-specific functionality; a dry gas source in fluid communication with the blackbody enclosure, the dry gas source configured to purge the blackbody enclosure with a gas; a temperature control system coupled to the cold element, the temperature control system configured to maintain the cold element at a predetermined temperature; and a configurable light trap feature incorporated into the cold element, wherein the light trap feature is specular and reduces reflected ambient radiation by at least five orders of magnitude.