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Transitions Optical is a U.S.-based company known for manufacturing photochromic lenses, which darken on exposure to specific types of light. The company was founded in 1990. [1] In 1991, Transitions Optical became the first company to commercialize and manufacture plastic photochromic lenses. [2]
In 2010, it introduced Transitions XTRActive lenses, with technology that allows the lenses to activate behind the windshield. In April 2014, Essilor acquired the entire stake of PPG in Transitions. In 2018, Essilor announced that Transitions Optical had partnered with Johnson & Johnson Vision to make the light-adaptive photochromic technology ...
In the end, Maintenaz's invention would be fixed between Essel's bifocal lens, the Diachrolux, and its trifocal lens, the Trilux. Without much brainstorming, Maintenaz's progressive lens was given a name following suit with the other premium products: Varilux. [7] The lens was launched officially in May 1959 at the Hotel Lutetia in Paris, France.
Today the complex surfaces of a progressive lens can be cut and polished on computer-controlled machines, allowing 'freeform surfacing', as opposed to the earlier casting process, thus explaining the difference in price. In short, the price is based on the technology used and the year the lens came to market.
A photochromic eyeglass lens, after exposure to sunlight while part of the lens remained covered by paper. Photochromism is the reversible change of color upon exposure to light. It is a transformation of a chemical species ( photoswitch ) between two forms by the absorption of electromagnetic radiation ( photoisomerization ), where the two ...
In real life, Hoffmann, a former child actress, is the mom of Rosemary, 1. And given her long history in Hollywood, she, like Light, is deeply appreciative of her "Transparent" role -- not the ...