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Photochromic lenses are commonly know as light intelligently lenses, they lighten to clear indoors and automatically turn into dark outdoors in a matter of minutes. But how does it work? Built in photochromic lenses, there are trillions of molecules of silver halide and chloride, when exposed to ultraviolet (UV) radiation in sunlight, they will absorb the sunlight, change their structure and move, turn to darken to provide a more comfortable vision to help you block the strong light.
Photochromic sunglasses and non-photochromic sunglasses are both great to block ultraviolet (UV) radiation in sunlight and provide the utmost in visual acuity, comfort and protection for your eyes. But which one should we to select? The answer is closely connected to how long you'll spend to stay outdoors. Photochromic glasses can intelligently change lenses colors from clear to dark, (and dark to clear), which can bring many convenience of carrying 2 pairs of clear glasses and sunglasses. If you need to spend long time for outdoor activities, we advise you to select sunglasses, which can offer a stable dark vision and good to block 70% - 85% visible light. Of course, you can try both of them to find our which one you prefer.
Sllac provides 2 types of photochromic lenses: regular photochromic lenses and Transitions for customers to select. They are both good at intelligently darken outdoors and lighten indoors. Compared to regular photochromic lenses, Transitions are darker outdoors and fully clear indoors with a faster adaption speed equipped with GEN 8 breakthrough technology. Sllac offers many 6 tint colors for photochromic lenses: gray, brown, orange, pink, green and blue for our customers to choose from.
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