Product Description
One: UV-400 ultraviolent-resistance test First, put the standard lens on the outlet of UV light, adjust the knob to make the value on the LCD screen same with the value of the standard lens. For the accuracy, you have to calibrate the value with the standard lens. Put the target lens on the outlet of UV light, and then the data displayed on the LCD screen is just the value of ultraviolent. The closer to 400 nm, the better the lens is. Two: anti-radiation test Makes the protruding part of lens in touch with the black anti-radiation testing point; If the lens is radiation-resistant, bird calls are given out, or is not radiation-resistant.