LISUN gonio spectroradiometer system for ceiling light measurement according to CIE

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For the aim of determining the angular and spectral distribution of light, one kind of instrument known as a goniometer-spectroradiometer system may be used. It typically consists of a goniometer, which is used to rotate a sample or light source through various angles, and a spectroradiometer, which is used to measure the intensity of the light at various wavelengths. The goniometer is used to measure the angle at which the sample or light source is rotated.

The gonio spectrometer is the instrument that is used to determine the degree to which the sample or the light source is spun. It is only when these two components are brought together that it is feasible to ascertain the angular and spectral characteristics of light. This information may subsequently be put to use in a number of scenarios, such as when calculating the reflectance or transmittance of materials or when analyzing the efficacy of optical systems.

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