Validity of the paraxial approximation in the focal region of a small-f-number lens

被引：14
|
作者：
Guha, S [1 ]
机构：
[1] USAF, Res Lab, AFRL, MLPJ, Wright Patterson AFB, OH 45433 USA
来源：
OPTICS LETTERS | 2001年 / 26卷 / 20期
关键词：
Approximation theory - Electric fields - Focusing - Optical instrument lenses;
D O I：
10.1364/OL.26.001598
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
For small-f-number lenses, whereas the paraxial approximation cannot be used for a description of propagation of light from the lens to the focal region, it is shown that the approximation is still valid for propagation of light over relatively small distances in the region near the focus. (C) 2001 Optical Society of America.
引用
收藏
页码：1598 / 1600
页数：3
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