Thermographic camera, has diaphragm adjustable between opening and closing positions by electric drive, and determining and influencing unit e.g. temperature sensor, provided at diaphragm to determine and influence temperature of diaphragm

摘要

The camera has a diaphragm adjustable between opening and closing positions by an electric drive. A determining and influencing unit e.g. temperature sensor, is provided at the diaphragm for determining and influencing temperature of the diaphragm. A thermographic sensor is provided in the camera. The temperature sensor is formed as a thermo element, and a heating and cooling element e.g. Peltier element, is provided at the diaphragm for heating or cooling the diaphragm to temperature different from ambient temperature.