OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 2 — Jan. 15, 2010
  • pp: 267–269

Optimized sinusoidal phase mask to extend the depth of field of an incoherent imaging system

Hui Zhao and Yingcai Li  »View Author Affiliations


Optics Letters, Vol. 35, Issue 2, pp. 267-269 (2010)
http://dx.doi.org/10.1364/OL.35.000267


View Full Text Article

Enhanced HTML    Acrobat PDF (556 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Wavefront coding is a powerful technique that can be used to extend the depth of field of an incoherent imaging system. By adding a suitable phase mask to the aperture plane, the optical transfer function of a conventional imaging system can be made defocus invariant. Since 1995, when a cubic phase mask was first suggested, many kinds of phase masks have been proposed to achieve the goal of depth extension. In this Letter, a phase mask based on sinusoidal function is designed to enrich the family of phase masks. Numerical evaluation demonstrates that the proposed mask is not only less sensitive to focus errors than cubic, exponential, and modified logarithmic masks are, but it also has a smaller point-spread-function shifting effect.

© 2010 Optical Society of America

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(110.1758) Imaging systems : Computational imaging

ToC Category:
Imaging Systems

History
Original Manuscript: August 26, 2009
Revised Manuscript: November 16, 2009
Manuscript Accepted: November 24, 2009
Published: January 15, 2010

Citation
Hui Zhao and Yingcai Li, "Optimized sinusoidal phase mask to extend the depth of field of an incoherent imaging system," Opt. Lett. 35, 267-269 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-2-267


Sort:  Author  |  Year  |  Journal  |  Reset  

References

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article

OSA is a member of CrossRef.

CrossCheck Deposited