Infrared Transducer for Space Uses

The infrared transducer devised, for space applications, at the Office National d'Etudes et de Recherches Aerospatiales (ONERA) incorporates a pneumatic thermal detector combined with a capacitance bridge. Performance data of the assembly are as follows: noise equivalent power at 40 Hz, 2.10-10 W/Hz-1/2; signal bandwidth 200 Hz; sensitive area 3 mm2; spectrum bandwidth 0.4 to 45 = (KRS 5 window). The equipment is designed to stand up under space conditions, such as vibrations, changes in temperature, and vacuum.