The CNFANS QC team has established an optical performance database for Gucci sunglasses through the CNFANS Spreadsheet. This comprehensive database includes 15 optical indicators for each model of sunglasses, ensuring that the quality and performance of the sunglasses meet the highest standards.Key optical indicators recorded in the Spreadsheet include polarization efficiency (≥99%), UV blockage rate (UV400), and light transmission rate, which is graded according to the depth of the color. These indicators are crucial for assessing the sunglasses' ability to protect the eyes from harmful light while maintaining visual clarity.For gradient lenses, the QC personnel meticulously document the uniformity of color transition parameters within the Spreadsheet. This attention to detail ensures that the color transition is smooth and visually appealing, enhancing the aesthetic quality of the sunglasses.In addition to the uniformity of color transition, the QC team uses a spectrophotometer to test the color rendition of the lenses. This advanced testing equipment helps to ensure that the sunglasses provide accurate color representation, which is essential for maintaining visual accuracy and comfort.Users can download the "Optical Performance Certificate" generated by the Spreadsheet, which serves as a professional authentication of the sunglasses' optical performance. This certificate is a valuable asset for both consumers and retailers, providing assurance of the product's quality and performance.For more information and to access the CNFANS Spreadsheet, please visit the following external link: CNFANS Optical Performance Database.