Align the centre of the standard lens with the UV test port so that the digital display value is the same as the standard value. In order to ensure the accuracy of the instrument, it is necessary to calibrate the value with the standard lens every once in a while and keep the standard lens properly. When testing the UV-400 value of the lens, place the testing lens at the UV outlet, the value displayed at this time is the UV resistance value of the lens, and the UV resistance value of 400nm is the best. When testing radiation resistant lenses, when the convex part of the lens touches the black radiation resistant test point, it will make a "beeping" sound. Lenses that do not make a sound are non-irradiation resistant lenses. When the instrument is not in use, cover it with a dust cloth to prevent dust from entering. Specifications: Name: Lens Anti-irradiation Tester Product weight: 0.6kg Package size: 27.3 16.2 11.2 cm Packing list: 1 Tester 1 Manual Note:If you have any questions, please feel free to contact us, we will provide you with the best solution within 24 hours.Reliable tool for professionals: Whether you are an optician, eyewear manufacturer, or retailer, our Photochromic Coated Lens Tester is an essential tool for ensuring the quality and effectiveness of photochromic coated lenses. Its reliable performance and precise measurements make it a valuable asset in the eyewear industry. Easy operation and accurate results: Operating the Photochromic Coated Lens Tester is incredibly easy, thanks to its user-friendly interface. Simply place the lenses in the designated area and let the device do its work. Within seconds, you will receive accurate and reliable results, allowing you to confidently assess the performance of the lenses. Comprehensive analysis: Our tester provides a comprehensive analysis of the photochromic coated lenses' performance. It measures the speed at which they darken in response to UV light, as well as how efficiently they lighten when exposed to lower light conditions. This information allows you to make informed decisions about the quality and suitability of the lenses for different environments. UV and radiation resistance testing: Our Photochromic Coated Lens Tester is equipped with state-of-the-art sensors that allow for precise evaluation of the lenses' resistance to harmful UV rays and radiation. This ensures that your eyewear provides optimal protection against potential eye damage caused by prolonged exposure to sunlight or other sources of radiation. Photochromic coated lens tester: This innovative device is designed specifically for testing the performance of photochromic coated lenses. With its advanced technology, it accurately measures the effectiveness of these lenses in adapting to varying light conditions.