UV light source uses high-power UV lamp beads, long life, narrow band, high purity, light source type and light source wavelength can be customized. The scope of application is the detection of defects such as minor scratches and bruises on the appearance of products; Fluorescent character, barcode, two-dimensional code recognition; Spectral reflectance difference detection; Glue detection (containing fluorescent substances); Banknote and ticket printing industries; Photochemical effect sampling.