Glasses That Turn Dark In The Sun
When you are indoors your lenses will get clear. Indoors they will clear up again in about 5 to 10 minutes. 5 Helpful Tips Regarding Photochromic Eyewear Safetyglassesusa Com Blog Light-adaptive lenses have improved in recent years Photochromic lenses have been around for decades. Glasses that turn dark in the sun . In just 15 to 30 seconds PhotoFusion lenses will darken in bright light or in the sun. When this photochromic additive is exposed to UV light or blue light from screens and lightbulbs it darkens the lens to block UV radiation and excessive light waves just like sunglasses. In fact because of the extreme popularity of the Transitions brand these lenses are usually referred to as transition lenses. Flickr CC BY 20. The Photochromic Light Adaptive Lenses Transitions lenses are smart lenses that immediately change from clear to dark tints when exposed to sunlight. Transitions Vantage is a clear lens that actually turn to a polarized lens when in contact with UV lig...