Rigorous concept for the design of diffractive microlenses with high numerical apertures

被引:25
作者
Schmitz, M
Bryngdahl, O
机构
[1] Department of Physics, University of Essen, Essen
来源
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 1997年 / 14卷 / 04期
关键词
D O I
10.1364/JOSAA.14.000901
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Cylindrical dielectric diffractive microlenses are designed by the use of rigorous electromagnetic diffraction theory, and their performances are compared with microlenses based on a conventional scalar design concept. Microlenses with a relief of four depth levels are considered as well as binary microlenses with subwavelength structures. We show that the density of energy in the focus of high-numerical-aperture microlenses can be significantly increased if the phase distribution of the transmitted electrical field is optimized. (C) 1997 Optical Society of America.
引用
收藏
页码:901 / 906
页数:6
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