spatial filter aperture

См. также в других словарях:

• Spatial filter — A spatial filter is an optical device which uses the principles of Fourier optics to alter the structure of a beam of coherent light or other electromagnetic radiation. Spatial filtering is commonly used to clean up the output of lasers, removing …   Wikipedia

• Spatial cutoff frequency — In optics, spatial cutoff frequency is a precise way to quantify the smallest object resolvable by an optical system. Due to diffraction at the image plane, all optical systems act as low pass filters with a finite ability to resolve detail. If… …   Wikipedia

• Synthetic-aperture magnetometry — (SAM) is a method for analysis of data obtained from magnetoencephalography (MEG) and electroencephalography (EEG). SAM is a nonlinear beamforming approach which can be thought of as a spatial filter.Fact|date=October 2008ee also* Aperture… …   Wikipedia

• Interferometric synthetic aperture radar — Interferometric synthetic aperture radar, also abbreviated InSAR or IfSAR, is a radar technique used in geodesy and remote sensing. This geodetic method uses two or more synthetic aperture radar (SAR) images to generate maps of surface… …   Wikipedia

• диафрагма пространственной фильтрации — Пространственный фильтр лазерного излучения, оформленный в виде диафрагмы, чаще всего круглого сечения, для подавления высших поперечных мод. [ГОСТ 15093 90] Тематики лазерное оборудование EN spatial filter aperture …   Справочник технического переводчика

• коллиматор с диафрагмой пространственной фильтрации — Коллиматор пучка лазерного излучения, внутри которого вблизи минимального сечения пучка лазерного излучения помещена диафрагма пространственной фильтрации. [ГОСТ 15093 90] Тематики лазерное оборудование EN collimator with spatial filter aperture …   Справочник технического переводчика

• Fourier optics — is the study of classical optics using techniques involving Fourier transforms and can be seen as an extension of the Huygens Fresnel principle. The underlying theorem that light waves can be described as made up of sinusoidal waves, in a manner… …   Wikipedia

• Optical transfer function — The optical transfer function (OTF) of an imaging system (camera, video system, microscope etc) is the true measure of resolution (image sharpness) that the system is capable of. The common practice of defining resolution in terms of pixel count… …   Wikipedia

• Coherence (physics) — In physics, coherence is a property of waves that enables stationary (i.e. temporally and spatially constant) interference. More generally, coherence describes all properties of the correlation between physical quantities of a wave. When… …   Wikipedia

• Pinhole camera — A pinhole camera is a very simple camera with no lens and a single very small aperture. Simply explained it is a light proof box with a single hole in one side. Light from a scene passes through this single point and projects an inverted image on …   Wikipedia

• Index of optics articles — Optics is the branch of physics which involves the behavior and properties of light, including its interactions with matter and the construction of instruments that use or detect it.[1] Optics usually describes the behavior of visible,… …   Wikipedia