Decomposition of the optical transfer function: Wavefront coding imaging systems

Gonzalo Muyo, Andy R. Harvey

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)


We describe the mapping of the optical transfer function (OTF) of an incoherent imaging system into a geometrical representation. We show that for defocused traditional and wavefront-coded systems the OTF can be represented as a generalized Cornu spiral. This representation provides a physical insight into the way in which wavefront coding can increase the depth of field of an imaging system and permits analytical quantification of salient OTF parameters, such as the depth of focus, the location of nulls, and amplitude and phase modulation of the wavefront-coding OTF. © 2005 Optical Society of America.

Original languageEnglish
Pages (from-to)2715-2717
Number of pages3
JournalOptics Letters
Issue number20
Publication statusPublished - 15 Oct 2005


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