METHOD FOR ACCURATE OPTICAL ALIGNMENT USING DIFFRACTION RINGS FROM LENSES WITH SPHERICAL-ABERRATION

被引:9
作者
GWYNN, RB
CHRISTENSEN, DA
机构
[1] Department of Electrical Engineering, University of Utah, Salt Lake City, UT
来源
APPLIED OPTICS | 1993年 / 32卷 / 07期
关键词
D O I
10.1364/AO.32.001210
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A useful alignment method is presented that exploits the closely spaced concentric fringes that form in the longitudinal spherical aberration region of positive spherical lenses imaging a point source. To align one or more elements to a common axis, spherical lenses are attached precisely to the elements and the resulting diffraction rings are made to coincide. We modeled the spherical aberration of the lenses by calculating the diffraction patterns of converging plane waves passing through concentric narrow annular apertures. The validity of the model is supported by experimental data and is determined to be accurate for a prototype penumbral imaging alignment system developed at Lawrence Livermore National Laboratory.
引用
收藏
页码:1210 / 1215
页数:6
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