Translation: from english

Dallmeyer, John Henry

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  • Dallmeyer, John Henry — ▪ British manufacturer born Sept. 6, 1830, Loxten, Westphalia [Germany] died Dec. 30, 1883, at sea off New Zealand       British inventor and manufacturer of lenses.       Showing an aptitude for science, Dallmeyer was apprenticed to an Osnabrück …   Universalium

  • Dallmeyer, John Henry — SUBJECT AREA: Photography, film and optics [br] b. 6 September 1830 Loxten, Westphalia, Germany d. 30 December 1883 at sea off New Zealand [br] German/English manufacturing optician and, lens designer. [br] Son in law of the great optician Andrew …   Biographical history of technology

  • John Henry Dallmeyer — John Henry Dallmeyer, né le 6 septembre 1830 à Loxen (Westphalie) et mort le 30 décembre 1883 est un opticien anglo allemand, inventeur notamment de l objectif aplanat. Source (en) Rudolf Kingslake, A history of the photographic lens, Academic… …   Wikipédia en Français

  • John Henry Dallmeyer — Infobox Person name = PAGENAME image size = 150px caption = PAGENAME birth name = September 6, 1830 birth date = Loxten, Westphalia birth place = December 30, 1883 death date = death place = death cause = resting place = resting place coordinates …   Wikipedia

  • Thomas Rudolphus Dallmeyer — (1859 1906), English optician was the son of John Henry Dallmeyer who ran an optics business.He assumed control of the business on the failure of his father s health, was principally known as the first to introduce the telephoto lens into… …   Wikipedia

  • Circle of confusion — For the closely related topic in microscopy, see Point spread function. In optics, a circle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source. It is also known as… …   Wikipedia

  • Объектив Петцваля — Оптическая схема объектива Петцваля. Объектив Петцваля тип фотографического объектива. Оптическая схема 4 линзы в трёх группах. Передний компонент …   Википедия

  • Photography, film and optics — See also: INDEX BY SUBJECT AREA [br] Abney, William de Wiveleslie Acres, Birt Anschütz, Ottomar Archer, Frederick Scott Baekeland, Leo Hendrik Barnack, Oskar Bayard, Hippolyte …   Biographical history of technology

  • F-number — In optics, the f number (sometimes called focal ratio, f ratio, or relative aperture [Smith, Warren Modern Lens Design 2005 McGraw Hill] ) of an optical system expresses the diameter of the entrance pupil in terms of the focal length of the lens; …   Wikipedia

  • Ned Chaillet — Edward William Ned Chaillet, III (  /ˈʃaɪ …   Wikipedia

  • Telephoto lens — Portal|Photography|Large format camera lens.jpg created by a telephoto lens is the same as that created by an ordinary lens of the same specified focal length. Construction If a camera lens were to be constructed from a single lens of 200 mm… …   Wikipedia

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