✅Color changing lenses, when exposed to ultraviolet and shortwave visible light in sunlight, darken their color and reduce their light transmittance; In indoor or dark areas, the transmittance of the lens light increases, leading to fading and restoring brightness.
✅Photochromic glasses can adjust the transparency of the lens by changing color, allowing the human eye to adapt to changes in ambient light, reducing visual fatigue, and protecting the eyes.