Photochromic glasses and Transition glasses

Photochromic lenses are lenses that darken on exposure to UV rays and gradually return to clear state if the UV disappears. Photochromic lenses have no requirement on lens material. They are available in most of the materials such as glass, plastic and polycarbonate. Glass photochromic lens was first developed in the 1960s, while plastic type in 1991 and polycarbonate type even later. Transition glasses can be made all of these materials.
 
However, different types of photochromic lenses achieve their photochromic properties through different means. The glass type embeds microcrystalline silver halides or molecules in a glass substrate. The plastic type relies on organic photochromic molecules to achieve darken effect. Today, a number of sunglasses manufacturers provide photochromic products, such as Intercast, Oakley, Serengeti Eyewear. But the most professional brand is the Transitions Optical.
 
Transitions Optical are proud of their worldwide efforts to promote healthy sight and wellness through outreach, education and support of global organizations. Until now, Transitions Optical has become a leading force in promoting the importance of healthy sight and wellness in the world.
 
Transition glasses use professional-recommended photochromic lenses in the world. For light changing, Transition glasses compromise no photochromic feature while providing various fashions. Mirror coat will never be found in Transition glasses since it reduces activity of the photochromic dyes in the lenses. But scratch resistant coating is ok for Transition glasses.
 
Currently, Transition glasses have partnerships with nearly a dozen lens manufactures and offer more than 100 lens options in the latest materials as well as the most popular designs. Customers will always get satisfaction from Transition glasses if they need photochromism.