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  2. Transitions Optical - Wikipedia

    en.wikipedia.org/wiki/Transitions_Optical

    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] From inception the company has been a joint ...

  3. Photochromic lens - Wikipedia

    en.wikipedia.org/wiki/Photochromic_lens

    A photochromic eyeglass lens, part of the lens darkened after exposure to sunlight while the other part remained covered. 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. Honda VFR800 - Wikipedia

    en.wikipedia.org/wiki/Honda_VFR800

    The Honda VFR800 (Interceptor) is a sport touring motorcycle made by Honda since 1998. [1] The model was the successor to the VFR750F and shares the V4 engine configuration with the Honda VF and VFR series. The VFR800 name was given to three successive iterations of Honda V4 motorcycles: 1998–2001 (RC46) VFR800Fi.

  5. 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 ...

  6. Honda CX series - Wikipedia

    en.wikipedia.org/wiki/Honda_CX_series

    The Honda CX series motorcycles, including the GL500 and GL650 Silver Wing variants, were developed and released by Honda in the late 1970s, with production ending in most markets by the mid 1980s. The design included innovative features and technologies that were uncommon or unused at the time such as liquid cooling, electric-only starting ...

  7. Essilor - Wikipedia

    en.wikipedia.org/wiki/Essilor

    Transitions Optical, Inc., specializing in photochromic lenses, started as a joint venture between PPG Industries and Essilor International S.A. in 1990. In 2009, it launched the first commercially viable photochromic shield for motorcycle helmets.

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