- Fresnel zone plate
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An optical device that uses diffraction through alternate transparent and opaque rings to function as a lens
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Fresnel zone plate
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zone plate — noun A Fresnel zone plate … Wiktionary
Zone plate — A zone plate is a device used to focus light. Unlike lenses however, zone plates use diffraction instead of refraction. Created by Augustin Jean Fresnel [freɪ nel] , they are sometimes called Fresnel zone plates in his honor. The zone plate s… … Wikipedia
Fresnel zone — In optics and radio communications, a Fresnel zone (pronounced FRA nel Zone ), named for physicist Augustin Jean Fresnel, is one of a (theoretically infinite) number of concentric ellipsoids of revolution which define volumes in the radiation… … Wikipedia
Fresnel (disambiguation) — Fresnel can refer to physicist Augustin Jean Fresnel, or to the following topics associated with him:*Fresnel equations, describing light reflection and refraction *Huygens Fresnel principle, a description of wave propagation *Fresnel diffraction … Wikipedia
Fresnel equations — The Fresnel equations, deduced by Augustin Jean Fresnel (pronEng|freɪˈnɛl), describe the behaviour of light when moving between media of differing refractive indices. The reflection of light that the equations predict is known as Fresnel… … Wikipedia
Fresnel integral — S(x) and C(x) The maximum of C(x) is about 0.977451424. If πt²/2 were used instead of t², then the image would be scaled vertically and horizontally (see below). Fresnel integrals, S(x) and C(x), are two transcendental functions named aft … Wikipedia
Augustin-Jean Fresnel — Infobox Scientist name = Augustin Jean Fresnel box width = image width =150px caption = Augustin Jean Fresnel birth date = Birth date|1788|5|10 birth place = Broglie (Eure) death date = death date and age|1827|7|14|1788|5|10 death place =… … Wikipedia
Integral de Fresnel — S(x) and C(x) El máximo de C(x) es 0,977451424. Si se utiliza πt²/2 en vez de t², entonces la imagen estaría escalada verticalmente y horizontalmente (ver comentario abajo). Las integrales de Fresnel, S(x) y C(x), son dos funciones trascenden … Wikipedia Español
X-ray microscope — An X ray microscope uses electromagnetic radiation in the soft X ray band to produce images of very small objects. Unlike visible light microscopes, X rays do not reflect or refract easily, and they are invisible to the human eye. Therefore the… … Wikipedia
Computer-generated holography — (CGH) is the method of digitally generating holographic interference patterns. A holographic image can be generated e.g. by digitally computing a holographic interference pattern and printing it onto a mask or film for subsequent illumination by… … Wikipedia
