DMS 903 Goniometer

The DMS 903 is ideal for photometric and colorimetric analysis of large displays. The measurement system is based on a 6-axis goniometer for determining angle-dependent characteristics and is used in quality control, as well as research and development. It permits analysis of test specimens up to a diagonal of 1500 mm (approx. 60’’), and measurement-area of 750 mm (approx. 30’’).


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  • Characterization of emissive, transmissive, reflective, and transflective displays
  • 6 motorized axes for viewing-angle scan and surface scanning of samples, without rotation of the test specimen during the measurements
  • Optional array spectrometer for precise radiometric and photometric measurements
  • Analysis of all photometric and colorimetric characteristics as a function of viewing angle, electrical driving, time and temperature (optionally with forced-air temperature-control chamber)
  • Optional specular illumination for evaluation of the reflectance characteristics (e.g. BRDF) and diffuse light source with adjustable diameter (1° to 15°) for simulation of ambient illumination


DMS 903  
Goniometer / Positioning 6 motorized axes (inclination, azimuth and height adjustment of the measuring head, x-y positioning, inclination of the reflective illumination device)
Maximum sample size
(L x W)
1300 x 1600 mm (72″ diagonal for a 16:9 panel) for center measurement;
650 x 1100 mm (50″ diagonal for a 16:9 panel) for full x-y scanning range
Maximum traverse 600 x 450 mm
Maximum sample thickness 280 mm
Alignment of the sample Horizontal (no rotation of the sample during measurement)
Detectors Photometer PMT 3 (standard);
Spectrometer (optional)
Illumination Diffuse transmissive illumination (standard) and hemispherical reflective illumination (optional);
Specular illumination for evaluation of reflectance characteristics (e. g. BRDF) (optional)
Measurement-spot sizes 0.5 / 1 / 2 / 3 / 5 / 7 / 10 mm
Dimensions instrument
(L x W x H)
approx. 1900 x 1500 x 1860 mm
Dimensions electronics rack
(L x W x H)
approx. 750 x 600 x 1250 mm
Weight instrument approx. 700 kg
Weight electronics rack approx. 120 kg

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