USING OF CCD BASED FIBRE OPTIC SPECTRORADIOMETERS IN PHOTOMETRIC MEASUREMENTS UNDER DIFFERENT CONDITIONS

摘要

Spectroradiometers are using people who want to measure and investigate spectrum of radiation from the source. This can be done also in the visible part of emitted radiation from source i.e. spectral measurement of light. It is important in many applications. Necessity of knowledge of spectrum can be very useful for example at the field verification of lighting system, to measurement of performance for example outdoor lighting systems under mesopic condition and so on. Therefore recently many types of portable spectroradiometers appear on the market. It can be found on the market many types of portable spectroradiometers from grid spectroradiometers with fibre optics to the sophisticated types with traditional optics (lenses). As detector they are using CCD array detector. Described spectroradiometers can be used for many applications and user can buy them at the different price levels with different performance and accuracy, especially, if user wants to measure absolute radiometrics or photometries quantities under different conditions. Portable spectroradiometers can be used in easier way in the field measurements than conventional types. They provide more flexible solutions for field measurements. But on the other hand many problems occur which should be concerned by the user to avoid errors at the procedure of measurement. Errors can be partially corrected by many calibrations done just before the using spectroradiometer. Then can be usage of portable spectroradiometers very useful especially using CCD fibre optics spectroradiometers.