Time multiplexing based extended depth of focus imaging

Asaf Ilovitsh, Zeev Zalevsky

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We propose to utilize the time multiplexing super resolution method to extend the depth of focus of an imaging system. In standard time multiplexing, the super resolution is achieved by generating duplication of the optical transfer function in the spectrum domain, by the use of moving gratings. While this improves the spatial resolution, it does not increase the depth of focus. By changing the gratings frequency and, by that changing the duplication positions, it is possible to obtain an extended depth of focus. The proposed method is presented analytically, demonstrated via numerical simulations and validated by a laboratory experiment.

Original languageEnglish
Pages (from-to)183-186
Number of pages4
JournalOptics Letters
Issue number1
StatePublished - 1 Jan 2016

Bibliographical note

Publisher Copyright:
© 2015 Optical Society of America.


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