翻訳と辞書 Words near each other ・ Radley College ・ Radley Metzger ・ Radley railway station ・ Radley Stakes ・ Radley, Indiana ・ Radley, Kansas ・ Radley-England waterplanes ・ Radlice ・ Radlice, Choszczno County ・ Radlice, Pyrzyce County ・ Radlická (Prague Metro) ・ Radius of convergence ・ Radius of curvature ・ Radius of curvature (applications) ・ Radius of curvature (mathematics) ・ Radius of curvature (optics) ・ Radius of gyration ・ Radius of maximum wind ・ Radius of outermost closed isobar ・ Radius Prawiro ・ Radius rod ・ Radius Values ・ Radius Ventures ・ Radivoj Berbakov ・ Radivoj Božić ・ Radivoj Korać ・ Radivoj Korać Cup ・ Radivoj Krivokapić ・ Radivoj Lazić ・ Radivoj of Bosnia Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Radius of curvature (optics) ： ウィキペディア英語版 Radius of curvature (optics) ''Radius of curvature'' (ROC) has specific meaning and sign convention ''in optical design''. A spherical lens or mirror surface has a center of curvature located in (''x'', ''y'', ''z'') either along or decentered from the system local optical axis. The vertex of the lens surface is located on the local optical axis. The distance from the vertex to the center of curvature is the radius of curvature of the surface. The sign convention for the optical radius of curvature is as follows: * If the vertex lies to the left of the center of curvature, the radius of curvature is positive. * If the vertex lies to the right of the center of curvature, the radius of curvature is negative. Thus when viewing a biconvex lens from the side, the left surface radius of curvature is positive, and the right surface has a negative radius of curvature. Note however that ''in areas of optics other than design'', other sign conventions are sometimes used. In particular, many undergraduate physics textbooks use an alternate sign convention in which convex surfaces of lenses are always positive. Care should be taken when using formulas taken from different sources. ==Aspheric surfaces== Optical surfaces with non-spherical profiles, such as the surfaces of aspheric lenses, also have a radius of curvature. These surfaces are typically designed such that their profile is described by the equation :$z(r)=\backslash frac\}\backslash right\; )\}+\backslash alpha\_1\; r^2+\backslash alpha\_2\; r^4+\backslash alpha\_3\; r^6+\backslash cdots\; ,$ where the optic axis is presumed to lie in the z direction, and $z(r)$ is the ''sag''—the z-component of the displacement of the surface from the vertex, at distance $r$ from the axis. If $\backslash alpha\_1$ and $\backslash alpha\_2$ are zero, then $R$ is the ''radius of curvature'' and $K$ is the conic constant, as measured at the vertex (where $r=0$). The coefficients $\backslash alpha\_i$ describe the deviation of the surface from the axially symmetric quadric surface specified by $R$ and $K$. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Radius of curvature (optics)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.