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Proceedings Paper

Improvement of spatial resolution in confocal microscope with shifted-focus phase filter
Author(s): Xiangdong Huang; Xiaoyan Xiang; Chongyang Wang
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Paper Abstract

A spatial super-resolution method is proposed based on the multiplicative character of confocal microscope’s amplitude point-spread functions. The axial resolution can be greatly improved by introducing a shifted-focus phase filters in illumination part of a confocal microscope. However, this improvement is accompanied by a decrease of transversal resolution. Thus, a super-Gaussian phase filter is optimized to control the focal shift and transversal intensity distribution in a confocal microscope. Numerical simulation results indicate that the proposed method is useful to obtain a significant improvement in the optical sectioning capacity.

Paper Details

Date Published: 6 March 2015
PDF: 5 pages
Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 94463U (6 March 2015); doi: 10.1117/12.2181493
Show Author Affiliations
Xiangdong Huang, Harbin Institute of Technology (China)
Xiaoyan Xiang, Harbin Institute of Technology (China)
Chongyang Wang, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 9446:
Ninth International Symposium on Precision Engineering Measurement and Instrumentation
Junning Cui; Jiubin Tan; Xianfang Wen, Editor(s)

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