Thermal imaging device with calibrating functionality

摘要

The device (1) has a reflector (12) for reflecting thermal radiation of a cooled infrared detector (8) on a detection zone of the detector, where the reflector includes microspheres (3). The microspheres are arranged on a gold foil. The microspheres exhibit a diameter between 50 micrometers and 90 micrometers. A heating element e.g. Peltier element, is provided for heating the reflector. A distance of the reflector from the detector is variable. Two adjacent microspheres contact each other. The microspheres are formed of polymethylmethacrylate material.