Testing, Qualification, Reliability

Near field goniometric measurements

Analyzer Rigo 801 | Near field goniometric Measurements | Testing, Qualification, Reliability
© Fraunhofer IZM
Analyzer Rigo 801
Leuchtdichteverteilung einer LED
© Fraunhofer IZM
Strahlensatz einer LED | Test, Qualifizierung, Zuverlässigkeit
© Fraunhofer IZM
Beam set of an LED

Near field goniophotometric system Rigo801

The use of LED- and small lamps data as source model is getting more and more important because of:

  • Fundamental condition for planning a correct illumination
  • Design, simulation and development of LEDs and lamps

The Goniometer Rigo801 uses a new image-resolving CCD-measuring technique to determinate raytrace data and light intensity distributions.

The correct determination of the intensity distribution of LEDs and lamps takes place far within their photometric limit by measuring image-resolved brightness distributions. A CCD-camera is manipulated by a goniometer and located around the stationary device under test on a spherical surface whose radius is defined merely by the field angle of the camera.


  • Complete description of the light emission by raytrace data
  • Resolution of C-planes 0.1°
  • Resolution of emission angles 0.1°
  • Wavelength 230 – 1200nm
  • Measurement time depending on the resolution (0.5 – 3 hours)

Resulting data:

  • Intensity distributions in well-established formats (EULUM-DAT, TM14, IES, Calculux, …)
  • Raytrace data in different formats (e.g. ASAP, SPEOS, LucidShape, LightTool, Zemax, TracePro, SimuLux)