Compact luminance meter LDM-9901

Precise and easy to use The extremely compact LDM-9901 luminance measurement head has a fixed 1.1° measurement field angle at measurement distances starting from 0.4m to infinity. Its 5% photometric matching corresponds to the DIN 5032 quality class B. Measurement field aim over notch and bead sight Measurement field focusing with the LDM-9901 luminance detector head is done by aim over notch and bead sight for three different measurement distance ranges. . Minimal scattered light Since the LDM-9901 does not have any viewing optics inside, its internal scattered light is very minimal. It is therefore well suited for measurement of low luminance levels in measurement fields with higher ambience luminance. Traceable calibration The calibration of the luminance responsivity is performed by Gigahertz-Optik‘s calibration laboratory for optical measurands. The calibration certificate contains all the information as stipulated by the ISO 17025 specifications.