A photochromic eyeglass lens (polymer film), after exposure to sunlight with part
of the lens covered by paper. Note the two levels of coloration around the ...
Dr. Gary Heiting outlines a buyer's guide to photochromic lenses (including
Transitions lenses) for eyeglasses and sunglasses that darken automatically ...
Read about the photochromic technology in Transitions Optical glasses. Our
photochromic Transitions lenses react to light and offer UV protection.
Compare Transitions Optical glasses online. Choose from Transitions Signature,
XTRActive, Drivewear and Vantage lenses for better vision.
Photochromic lenses were originally developed in the 1960's and made from
glass. They worked a bit like pieces of old-fashioned, photographic film.
Nov 24, 2014 ... A simple explanation of how photochromic (light-sensitive) eyeglass lenses
darken in the light and lighten in the dark.
Photochromic lenses have millions of molecules of substances such as silver
chloride or silver halide embedded in them. The molecules are transparent to ...
Photochromic lenses are lenses made of glass, plastic or polycarbonate that
darken when exposed to glare from ultraviolet light. If you've ever driven with the
May 20, 2012 ... ImpactX Photochromic lenses provide unique climatic management technology,
getting dark from low to high light transmission within a few ...
Mar 11, 2015 ... We get asked a lot about how our photochromic lenses stack up with Transitions.
® Well we wanted to know the answer to that as well, so in this ...