翻訳と辞書 Words near each other ・ Lundzi ・ Lundër ・ Lune ・ Lune (geometry) ・ Lune (river) ・ Lune Aqueduct ・ Lune de miel ・ Lune Forest ・ Lune Millennium Bridge ・ Lune of Hippocrates ・ Lune River, Tasmania ・ Lune Road Ground ・ LuNeack House ・ Luneau ・ Luneberg ・ Luneburg lens ・ Luneburg, KwaZulu-Natal ・ Lunedale ・ Lunegarde ・ Lunegarde (film) ・ Luneh ・ Lunel ・ Lunel-Viel ・ Lunella ・ Lunella cinerea ・ Lunella coreensis ・ Lunella coronata ・ Lunella granulata ・ Lunella jungi ・ Lunella moniliformis 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 Luneburg lens ： ウィキペディア英語版 Luneburg lens A Luneburg lens (originally ''Lüneburg lens'', often incorrectly spelled ''Luneberg lens'') is a spherically symmetric gradient-index lens. A typical Luneburg lens's refractive index ''n'' decreases radially from the center to the outer surface. They can be made for use with electromagnetic radiation from visible light to radio waves. For certain index profiles, the lens will form perfect geometrical images of two given concentric spheres onto each other. There are an infinite number of refractive-index profiles that can produce this effect. The simplest such solution was proposed by Rudolf Luneburg in 1944.〔 Luneburg's solution for the refractive index creates two conjugate foci outside of the lens. The solution takes a simple and explicit form if one focal point lies at infinity, and the other on the opposite surface of the lens. J. Brown and A. S. Gutman subsequently proposed solutions which generate one internal focal point and one external focal point. These solutions are not unique; the set of solutions are defined by a set of definite integrals which must be evaluated numerically. ==Designs== 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「Luneburg lens」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.