back focal length

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• Focal length — The focal length of an optical system is a measure of how strongly it converges (focuses) or diverges (diffuses) light. A system with a shorter focal length has greater optical power than one with a long focal length. Thin lens approximation For… …   Wikipedia

• Digital camera back — Kodak DCS420 digital camera, consisting of a modified Nikon N90s body (left) and a digital back (right) shown here separated …   Wikipedia

• BFL — • Back Focal Length ( > IEEE Standard Dictionary ) • Bakersfield, CA, USA internationale Flughafen Kennung …   Acronyms

• Lens (optics) — For other uses, see Lens. A lens. Lenses can be used to focus light. A lens is an optical device with perfect or approximate axial symmetry which tra …   Wikipedia

• Ritchey-Chrétien telescope — The Ritchey Chrétien telescope or RCT is a specialized Cassegrain telescope designed to eliminate coma, thus providing a relatively large field of view as compared to a more conventional configuration. An RCT has a hyperbolic primary and a… …   Wikipedia

• заднее фокусное расстояние — (f') Расстояние от задней главной точки до заднего фокуса. [ГОСТ 7427 76] [Сборник рекомендуемых терминов. Выпуск 79. Физическая оптика. Академия наук СССР. Комитет научно технической терминологии. 1970 г.] Тематики оптика, оптические приборы …   Справочник технического переводчика

• BFL — [1] Back Focal Length ( > IEEE Standard Dictionary ) [2] Bakersfield, CA, USA internationale Fughafen Kennung …   Acronyms von A bis Z

• photography, technology of — Introduction       equipment, techniques, and processes used in the production of photographs.  The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …   Universalium

• Optics — For the book by Sir Isaac Newton, see Opticks. Optical redirects here. For the musical artist, see Optical (artist). Optics includes study of dispersion of light. Optics is the branch of …   Wikipedia

• microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …   Universalium

• telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …   Universalium