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  2. Maui Jim - Wikipedia

    en.wikipedia.org/wiki/Maui_Jim

    Maui Jim is an American sunglasses manufacturer based in Peoria, Illinois. Founded in Lahaina, Hawaii, in 1980, the company designs, develops, and manufactures a wide variety of sunglasses marketed under the eponymous brand name. As of 2015, it was the third-largest producer of sunglasses in the world.

  3. Photochromic lens - Wikipedia

    en.wikipedia.org/wiki/Photochromic_lens

    A photochromic lens is an optical lens that darkens on exposure to light of sufficiently high frequency, most commonly ultraviolet (UV) radiation. In the absence of activating light, the lenses return to their clear state.

  4. Sunglasses - Wikipedia

    en.wikipedia.org/wiki/Sunglasses

    Sunglasses of this type are sometimes called mirrorshades. A mirror coating does not get hot in sunlight and it prevents scattering of rays in the lens bulk. Sunglass lenses are made of either glass, plastic, or SR-91. Plastic lenses are typically made from acrylic, polycarbonate, CR-39 or polyurethane.

  5. Photosensitive glass - Wikipedia

    en.wikipedia.org/wiki/Photosensitive_glass

    Photosensitive glass vase. Photosensitive glass, also known as photostructurable glass ( PSG) or photomachinable glass, is a glass in the lithium - silicate family of glasses onto which images can be etched using short wave radiations such as ultraviolet light. [1] Photosensitive glass was first discovered by S. Donald Stookey in 1937.

  6. History of optics - Wikipedia

    en.wikipedia.org/wiki/History_of_optics

    History of optics. Modern ophthalmic lens making machine. Optics began with the development of lenses by the ancient Egyptians and Mesopotamians, followed by theories on light and vision developed by ancient Greek philosophers, and the development of geometrical optics in the Greco-Roman world. The word optics is derived from the Greek term ...

  7. Talk:Maui Jim - Wikipedia

    en.wikipedia.org/wiki/Talk:Maui_Jim

    Maui Jim features four lens colors: Neutral Grey, Maui Rose™, HCL® Bronze, and Maui HT™. The Neutral Grey is the darkest of the Maui Jim lenses. It is meant to be worn in bright, direct sunlight, and provides the most sun protection.

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