Goniofotometry

LEDGON

The LEDGON goniophotometer from Instrument Systems determines the spatial radiation pattern of LEDs and small LED modules. Measurement is made over the whole forward hemisphere of an emitting LED. A high angle resolution of 0.1° means exact measurements even for narrow emission angle LEDs. In combination with the CAS 140CT spectroradiometer, additional spectral parameters, such as the angle dependence of color coordinates or color temperature, can also be measured. White LEDs, for example, exhibit a significant angle dependence of the color temperature.

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LGS 1000

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.

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LGS 650

The LGS 650 goniophotometer was developed for the analysis of angle-dependent spatial radiation properties from mid- to large-sized SSL sources and LED modules. The test specimen is operated in a horizontal burning position and measurements can be taken at an angular range of ± 160 ° in the gamma axis. The angular resolution of 0.01 ° enables very fine measuring grids recorded with a high level of accuracy and reproducibility. The LGS 650 is compliant with all relevant specifications in conformity with CIE, DIN and IES standards. The probes may have a diameter up to max. 1300 mm and a maximum weight of 10 kg.

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LGS 350

The LGS 350 Goniophotometer / Goniospectroradiometer was developed for the analysis of angle-dependent spatial radiation properties from small to medium-sized SSL luminaires and LED modules. The test specimen is operated in a horizontal burning position and measurements can be taken at an angular range of ±160° in the gamma / theta axis. Combined with a spectroradiometer from Instrument Systems, all spectral quantities such as color coordinates, color temperature and even color rendering index are determined as a function of angle. The Optronik DSP Photometer can also be used to carry out C-plane measurements very quickly “on the fly”.

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