Q: Why do photochromic lenses tend to darken after being worn for a long time?
A: Photochromic lenses darken in color after being worn for a long time and cannot completely turn back to transparent because the color-changing factors in them cannot return to their original state after color change, thus the base color appears. This phenomenon often occurs in poor quality photochromic lenses, and good photochromic lenses will not have this situation.
Q: Summer and winter, in which season do photochromic lenses darken more?
A: Winter is the season with the least ozone content in the year. Without the "protective coat" of the ozone layer, the ultraviolet rays in the sun are more rampant, so the photochromic lenses will also become darker; at the same time, the temperature is lower in winter, and the fading speed will be slower.
A: ① Gray lenses can absorb infrared rays and 98% of ultraviolet rays. The biggest advantage is that the original color of the scenery will not be changed by the lenses, and the light intensity is effectively reduced. ② Gray lenses can absorb any color spectrum evenly, so the scenery will only become darker, but there will be no obvious color difference, showing a real and natural feeling. ③ The gray series belongs to the neutral series, which is versatile and fashionable. Q: What should be paid attention to when processing color-changing lenses?
A: ① Before processing, check the color-changing function; ② Before processing, apply anti-slip stickers; ③ The lens cannot be processed too large to avoid internal stress; ④ Note that the pressure value of the processing equipment cannot be too large.
we will attend the 2025 MIDO Optical Fair on FEB.8~FEB.10, welcome to our booth. You can know our products first, please check which items you are interested in and contact us freely. Now Summer is coming, Our photochromic lenses are hot sale , please find more details form our website. we also have RX preceitpion lens and so on.
Post time: May-30-2025