The UV detection card can convert invisible UV into visible light. By judging the spectrum at different wavelengths, alternating detection of UV-1 and UV-2 can qualitatively distinguish 253nm, 365nm, and 400nm. At the same time, it can be used for UV laser spot analysis detection, optical axis calibration, and tracking. The size of the UV detection card is like a business card, and the detection area size is 30*50mm. Special specifications need to be customized.