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Proceedings Paper

Design of diffractive microlenses using general focal length function
Author(s): Jie Lin; Jian Liu; Chenguang Zhao
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Paper Abstract

In order to study the validity of general focal length function in designing diffractive microlenses with long focal depth, diffractive microlenses with different f-numbers are designed using general focal length function and their focusing characteristics, such as real focal depth, real focal spot size, and diffractive efficiency, are investigated using electromagnetic theory and boundary element method. Investigation results indicate that general focal length function can be used to achieve long focal depth in designing diffractive microlenses, even twice over than those of conventional diffractive microlenses with similar parameters.

Paper Details

Date Published: 12 January 2009
PDF: 7 pages
Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 713337 (12 January 2009); doi: 10.1117/12.813382
Show Author Affiliations
Jie Lin, Harbin Institute of Technology (China)
Jian Liu, Harbin Institute of Technology (China)
Chenguang Zhao, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 7133:
Fifth International Symposium on Instrumentation Science and Technology
Jiubin Tan; Xianfang Wen, Editor(s)

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