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  2. Vortex Optics - Wikipedia

    en.wikipedia.org/wiki/Vortex_Optics

    Vortex Optics is a DBA of Sheltered Wings, Inc., which was incorporated in Wisconsin in 1989. Sheltered Wings, Inc. DBA Vortex Optics began in 2002. In 2022 after extensive research, testing and reviews Vortex became an official supplier and contractor to the American Military as the U.S. Army selected Vortex‘s XM-157 fire control system for its Next Generation Squad Weapon program.

  3. Telescopic sight - Wikipedia

    en.wikipedia.org/wiki/Telescopic_sight

    A telescopic sight, commonly called a scope informally, is an optical sighting device based on a refracting telescope. [ 1] It is equipped with some form of a referencing pattern – known as a reticle – mounted in a focally appropriate position in its optical system to provide an accurate point of aim.

  4. Vertex distance - Wikipedia

    en.wikipedia.org/wiki/Vertex_distance

    Vertex distance. Vertex distance. Vertex distance is the distance between the back surface of a corrective lens, i.e. glasses (spectacles) or contact lenses, and the front of the cornea. Increasing or decreasing the vertex distance changes the optical properties of the system, by moving the focal point forward or backward, effectively changing ...

  5. Optical vortex - Wikipedia

    en.wikipedia.org/wiki/Optical_vortex

    An optical vortex (also known as a photonic quantum vortex, screw dislocation or phase singularity) is a zero of an optical field; a point of zero intensity. The term is also used to describe a beam of light that has such a zero in it. The study of these phenomena is known as singular optics .

  6. Lensman series - Wikipedia

    en.wikipedia.org/wiki/Lensman_series

    Lensman (1984 film) Lensman: Secret of the Lens (SF新世紀レンズマン, SF Shinseiki Renzuman) is a 1984 Japanese animated film based on the Lensman novels. The movie is a loose adaptation of the series. It was dubbed by Harmony Gold in 1988. This was re-dubbed by Streamline Pictures in 1990 with most of the same voice actors.

  7. Subaru Telescope - Wikipedia

    en.wikipedia.org/wiki/Subaru_Telescope

    Subaru Telescope. /  19.8256°N 155.4761°W  / 19.8256; -155.4761. Subaru Telescope (すばる望遠鏡, Subaru Bōenkyō) is the 8.2-metre (320 in) telescope of the National Astronomical Observatory of Japan, located at the Mauna Kea Observatory on Hawaii. It is named after the open star cluster known in English as the Pleiades.

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