This award-winning colorimeter, patented in the USA and China, represents a world-leading technological achievement recognized by the Chinese Academy of Sciences. It incorporates high-performance components like a custom EVERFINE flat-field concave grating and a scientific-grade TE-cooled CCD from Hamamatsu. Utilizing proprietary Bandpass-filter Wheel Correcting Technique (BWCT) and advanced stray light correction, it achieves exceptional specifications: 0.003 chromaticity accuracy, 0.2% photometry linearity, and an ultra-low stray light level of 8.00E-04. Capable of measuring transient light sources like flashes in under 1μs, it is the ideal tool for both steady-state and pulsed LED measurement.