RETROREFLECTION BY REFRACTION

被引：19

作者：

HANNAY, JH

HAEUSSER, TM

机构：

来源：

JOURNAL OF MODERN OPTICS | 1993年 / 40卷 / 08期

关键词：

D O I：

10.1080/09500349314551501

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A sphere of radius a whose refractive index at radius r is n(r) = (2a/r -1)1/2 for r < a (with n = 1 for r > a) is shown to be a perfect 'retrorefractor' in geometrical optics; every ray incident on the sphere is bent through 180-degrees. This compares favourably with a conventional retroreflector of three circular mirrors intersecting at right angles (eight corner reflectors) which retroreflects only one-seventh of all incident rays. However, the retrorefracting sphere suffers serious impracticalities.

引用

页码：1437 / 1442

页数：6