LED, solid-state lighting, spectrum, illuminance, CCT, CRI uniformity, dominant wavelength, S/P, luminous flux

      Lighting sources are closely related to our lives. In the past 100 years, human beings have experienced incandescent lamps, tungsten halogen lamps, fluorescent lamps, low-pressure sodium lamps, LED light sources, etc. There are also many parameters to evaluate lighting source, such as luminous flux, brightness, illuminance, color temperature, color rendering index, light efficiency ratio, bright-dark visual ratio, dominant wavelength, excited purity and so on. 

     The CL800 series spectrophotometer adopts high-precision concave grating splitting，0.2nm wavelength accuracy, ， 1nm wavelength interval output. It can conveniently implement all the functions of current mainstream illuminance meters, has good compatibility with imported high-end illuminance meter data, and can pass the national authoritative first level measurement. 

   As shown in the figure, the single instrument of CL800 series spectroradiometer can easily measure parameters such as spectrum, illuminance, color temperature, color rendering index, dominant wavelength, bright-dark visual ratio, peak wavelength, plant lamp parameters, flicker, flash measurement, camera white balance, etc. The combination of an illuminance meter and an integrating sphere can achieve optical flux measurement. With the help of a professional HIQC upper computer, the color light classification and chromaticity coordinate screening of LED solid-state light sources mentioned in the American Energy Star standard can be easily realized.