LGS 1000 Goniophotometer

Superior measurement technology for large SSL lamps and LED modules

The new LGS 1000 goniophotometer analyzes the angle-dependent spatial radiation properties of large SSL lamps and LED modules up to a length of 1900 mm and weight of 50 kg. The Type C design with horizontal optical axis permits a much simpler setup for the measuring path – despite its impressive dimensions of 1850 x 1492 x 1798 mm – than with complex mirror goniophotometers.

Combined with a spectroradiometer from Instrument Systems, all spectral quantities such as color coordinates, color temperature and even color rendering index can be determined as a function of angle. C-plane measurements can also be carried out very quickly “on the fly” using the Optronik DSP Photometer.

The complete system
The LGS 1000 comprises the goniometer itself with a sample plate for fixing the test specimen and LGS controller. The control unit is located in a separate 19” rack. The goniophotometer system from Instrument Systems includes a comprehensive range of accessories such as the luminous flux integrator which measures test objects up to a diameter of 200 mm in their required burning position in conformance with standards CIE S 025, EN 13032-4 and IES LM-79-2008. An additional burning position correction enables the characterization of larger probes. This innovative accessory permits measurement of all photometric quantities of the test item in a luminaire orientation other than the designed burning position. The mechanical design guarantees a comfortable setup of the operational position necessary for the determination of correction data using the auxiliary photometer method conforming to the latest international standards (CIE S 025 and EN 13032-4).

Product highlights

  • Type C goniophotometer for specimens up to 1900 mm in diameter
  • Accessible steps facilitate mounting of samples
  • Accurate determination of luminous intensity and luminous flux
  • Angular-resolved analysis of spectral and colorimetric quantities
  • Optional luminous flux integrator
  • Optional burning position correction
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