Optical Radiation Lab
The Institute has a fully air conditioned radiation laboratory, which is required, among other things, for the calibration of different measuring instruments.
The laboratory consists of two rooms, one smaller so-called lamp room and a larger working area. To ensure that no natural radiation from the outside can reach the laboratory, there is no window. In order to reduce scattering to a minimum when using radiation sources, the walls and the ceiling are painted with a dull black color to achieve a matte surface. In addition the floor is covered by a black carpet.
Since most instruments in field of radiation measurements are temperature-dependent, the temperature in the laboratory is kept at a constant value. Due to the fact, that the laboratory is not influenced by outside radiation and temperature variations, extensive and complicated calibrations and investigations can be performed.
For calibrations, test lamps with different power outputs are used. The spectrum of these test lamps were measured by the Physikalisch Technische Bundesanstalt. Particularly powerful test lamps are operated in the lamp room. Through a small opening in the wall between the two rooms instruments, such as spectroradiometers can be calibrated at this test lamp. For the calibrations and investigations, a large test bench is used, on which the optical set ups can be assembled and adjusted with very high accuracy.