The CNFans QC team has established a comprehensive optical performance database for Gucci sunglasses through the use of the CNFans Spreadsheet. This database is a testament to their commitment to quality control and ensuring that every pair of sunglasses meets the highest standards of optical performance.The Spreadsheet meticulously records 15 optical indicators for each model of sunglasses, including polarization efficiency (≥99%), UV protection rate (UV400), and light transmission rate, which is categorized based on the depth of the color. These indicators are crucial for ensuring that the sunglasses provide optimal visual comfort and protection against harmful light rays.For gradient lenses, the QC personnel meticulously document the uniformity of color transition parameters within the Spreadsheet. They also employ a spectrophotometer to test the color rendition of the lenses, ensuring that the sunglasses not only look good but also provide accurate color representation.Users can download the "Optical Performance Certificate" generated by the Spreadsheet, which serves as a professional authentication basis. This certificate is a valuable tool for both the end-users and the retailers, as it provides a detailed report on the optical performance of the Gucci sunglasses they are purchasing or selling.For more information and to access the CNFans Spreadsheet, please visit the following external link: CNFans Optical Performance Database.