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Proceedings Paper

Research on the effect of phase mask to extend the depth of field of optical system
Author(s): Xiaorong Chen; Shuguang Dai; Chunlei Xia
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Paper Abstract

The technique of wavefront coding can extend the depth of field of incoherent optical systems in which the design of phase mask is very important. Several designs of phase mask are proposed in this paper, the MTFs (magnitude of optical transfer function) of these methods are deduced and the figures of MTFs are compared and discussed. The simulation results are presented that MTFs are insensitive to misfocus and never to be zero which would occur in traditional incoherent optical systems. Based on subjective evaluation and quantitative simulation results, we believe that special designof phase masks is effective to expand the depth of an incoherent optical system.

Paper Details

Date Published: 27 November 2007
PDF: 5 pages
Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 67232U (27 November 2007); doi: 10.1117/12.783356
Show Author Affiliations
Xiaorong Chen, Univ. of Shanghai for Science and Technology (China)
Shuguang Dai, Univ. of Shanghai for Science and Technology (China)
Chunlei Xia, Univ. of Shanghai for Science and Technology (China)


Published in SPIE Proceedings Vol. 6723:
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Junhua Pan; James C. Wyant; Hexin Wang, Editor(s)

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