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Integrating sphere allows survey of large LED arrays

Integrating sphere allows survey of large LED arrays

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By eeNews Europe



The inner surface of the GLS 2000 is coated with barium sulphate, a material that possesses diffuse reflective properties. This enables complete integration and blending of the light radiation required for many light measurements. The increasing deployment of LEDs in lighting applications generates the necessity for manufacturers, system integrators, materials researchers, lighting designers and scientific laboratories to conduct complex measurements on LED luminaires. With its ample space, the GLS 2000 allows complete luminaires to be surveyed and measure the spectral power distribution of such devices.

Calibrated in the entire spectrum from 240 through 2600nm, the GLS facilities measurements of radiant power and luminous flux. The system measures absolute values as well as a range of radiometric and photometric parameters simultaneously, including colour rendering index (CRI) according to CIE and colour coordinates according to CIE 1931 and CIE 1964. The measurement results can be used to deduct the efficiency of the light source. In addition, users can determine to which extend the electronic components, drivers and power supplies in the DUT affect the spectral properties of the LEDs. Likewise, the impact of dimmers and cooling devices can be measured. The same holds true for optical components such as lenses, reflectors and diffusors used in the array under test.

Along with the integrating sphere comes the software GL SpectroSoft. It enables users to automatically determine of basic parameters as well as of further photometric values such tristimulus value, chromtizy coordinates, dominant wavelength and many more. In addition, The GLS 2000 can also be combined with spectro-radiometres from GL Optics.

For more information visit https://www.gloptic.com/

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