Effect of spherical aberration in trefoil phase plates on color wavefront coding

Miguel Olvera-Angeles, Alfonso Padilla-Vivanco, Jose M Sasian, James T Schwiegerling, Justo Arines, Eva Acosta

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Wavefront coding is a technique that makes use of aspheric phase masks and image processing to greatly increase the depth of focus and/or reduce the cost of imaging systems. The phase mask adds a controlled amount of aberrations to the optical system in such a way that invariant imaging properties are achieved over a wide range of defocus. When aspheric phase plates are fabricated, their shape has to be carefully designed to avoid introducing other aberrations into the optical system, which could reduce its performance. In this work, we will show how inherent spherical aberration for trefoil-shaped phase plates reduces the quality of color images. Results will be illustrated with numerical simulations. We will show that a fourth-order polynomial added to a trefoil shaped phase mask can avoid the plate generating undesired spherical aberration that will affect the final quality of the decoded color images.

Original languageEnglish (US)
Article number08PF05
JournalJapanese Journal of Applied Physics
Volume57
Issue number8
DOIs
StatePublished - Aug 1 2018

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color coding
Wavefronts
Aberrations
aberration
Color
Masks
masks
Optical systems
color
Imaging systems
image processing
polynomials
coding
Image processing
Polynomials
costs
Imaging techniques
Computer simulation
Costs
simulation

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Effect of spherical aberration in trefoil phase plates on color wavefront coding. / Olvera-Angeles, Miguel; Padilla-Vivanco, Alfonso; Sasian, Jose M; Schwiegerling, James T; Arines, Justo; Acosta, Eva.

In: Japanese Journal of Applied Physics, Vol. 57, No. 8, 08PF05, 01.08.2018.

Research output: Contribution to journalArticle

Olvera-Angeles, Miguel ; Padilla-Vivanco, Alfonso ; Sasian, Jose M ; Schwiegerling, James T ; Arines, Justo ; Acosta, Eva. / Effect of spherical aberration in trefoil phase plates on color wavefront coding. In: Japanese Journal of Applied Physics. 2018 ; Vol. 57, No. 8.
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