The DCN1000W/L extended area blackbodies are low temperature infrared reference
sources operating either in absolute or differential mode. Featuring the highest available
stability of regulation, they are particularly well adapted for the characterization and
performance validation of a very wide range of IR sensors, such as high resolution cameras
for thermography, and long range thermal imagers. They consist of an emissive head of
various sizes whose temperature is accurately controlled via a 2U electronic unit through
an ergonomic interface and whose heat dissipation is ensured by water (W type) or a
refrigerated liquid (L type). The liquid is supplied by a separate cooling liquid unit and
circulated through a jacket at the back of the blackbody. The temperature of the high
emissive surface is stabilised within 0.5mk at temperatures above and below ambient
temperature.
In order to avoid dew condensation on low temperature surfaces, the system includes
several options such as sweeping dry gas on the emissive area, enclosing the emissive
area inside a nitrogen filled chamber sealed by an IR window, coupling the blackbody to a
nitrogen filled cabinet housing the unit under test.
Just as any other HGH blackbody, the DCN1000W/L family are provided
with a radiometric certificate of calibration demonstrating the reliability
of this IR reference source for two years. Targets can be added, as well
as the INFRATEST software, thanks to which a wide range of tests can be
automated: NETD, temporal noise, fixed pattern noise, MTF, FoV, distortion,
spatial resolution, MRTD, TOD, etc.