variable aperture antenna — антенна с переменным раскрывом
antenna array aperture — раскрыв антенной решетки
aperture blocking — экранирование раскрыва
aperture blockage — затенение раскрыва
reflector aperture — раскрыв зеркала
English-Russian big medical dictionary. 2005.
Aperture — For other uses, see Aperture (disambiguation). f stops demonstrated on a lens … Wikipedia
Synthetic aperture radar — (SAR) is a form of radar in which the highly directional (and thus very large) rotating antenna used by conventional radar is replaced with many low directivity small stationary antenna positions scattered over some area near or around the target … Wikipedia
Launch numerical aperture — In telecommunications, launch numerical aperture (LNA) is the numerical aperture of an optical system used to couple (launch) power into an optical fiber. LNA may differ from the stated NA of a final focusing element if, for example, that element … Wikipedia
Cambridge Optical Aperture Synthesis Telescope — COAST, the Cambridge Optical Aperture Synthesis Telescope, is a multi element optical astronomical interferometer with baselines of up to 100 metres, which uses aperture synthesis to observe stars with angular resolution as high as one thousandth … Wikipedia
Microwave Imaging Radiometer with Aperture Synthesis — (MIRAS) is the major instrument on the Soil Moisture and Ocean Salinity satellite (SMOS). MIRAS is a planar antenna composed of a central body (the so called hub) and three telescoping, deployable arms, in total 69 receivers on the Unit. Each… … Wikipedia
Heads-up display (GUI) — Like its equivalents in aircraft and video gaming, heads up displays are elements of the graphical user interface in personal computing systems. They allow for the transmission of information concerning the current task in a running desktop… … Wikipedia
Shutter speed — [ aperture size to achieve proper exposure.] In photography, shutter speed is the length of time a shutter is open; the total exposure is proportional to this exposure time, or duration of light reaching the film or image… … Wikipedia
Schneider Kreuznach — is the abbreviated name of the company Jos. Schneider Optische Werke GmbH, which is sometimes also simply referred to as Schneider. They are a manufacturer of industrial and photographic optics.The company was founded on 18 January 1913 by Joseph … Wikipedia
Rodenstock GmbH — is an optics manufacturer based in Munich, Bavaria, Germany.Rodenstock was founded in 1877 by Josef Rodenstock and specialized in producing high quality optical lenses for cameras and enlargers ( Rodagon, Sironar, Apo Ronar, Grandagon, Apo… … Wikipedia
optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… … 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
