Optical transfer function shaping and depth of focus by using a phase only filter

Dina Elkind, Zeev Zalevsky, Uriel Levy, David Mendlovic

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The design of a desired optical transfer function (OTF) is a common problem that has many possible applications. A well-known application for OTF design is beam shaping for incoherent illumination. However, other applications such as optical signal processing can also be addressed with this system. We design and realize an optimal phase only filter that, when attached to the imaging lens, enables an optimization (based on the minimal mean square error criterion) to a desired OTF. By combining several OTF design goal requirements, each represents a different plane along the beam propagation direction, an imaging system with an increased depth of focus is obtained. Because a phase only filter is used, high energetic efficiency is achieved.

Original languageAmerican English
Pages (from-to)1925-1931
Number of pages7
JournalApplied Optics
Issue number11
StatePublished - 10 Apr 2003
Externally publishedYes


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