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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 13 — Jul. 1, 2014
  • pp: 3986–3988

Wavefront-coding technique for inexpensive and robust retinal imaging

Justo Arines, Rene O. Hernandez, Stefan Sinzinger, A. Grewe, and Eva Acosta  »View Author Affiliations


Optics Letters, Vol. 39, Issue 13, pp. 3986-3988 (2014)
http://dx.doi.org/10.1364/OL.39.003986


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Abstract

We propose a hybrid optical-digital imaging system that can provide high-resolution retinal images without wavefront sensing or correction of the spatial and dynamic variations of eye aberrations. A methodology based on wavefront coding is implemented in a fundus camera in order to obtain a high-quality image of retinal detail. Wavefront-coded systems rely simply on the use of a cubic-phase plate in the pupil of the optical system. The phase element is intended to blur images in such a way that invariance to optical aberrations is achieved. The blur is then removed by image postprocessing. Thus, the system can provide high-resolution retinal images, avoiding all the optics needed to sense and correct ocular aberration, i.e., wavefront sensors and deformable mirrors.

© 2014 Optical Society of America

OCIS Codes
(330.4300) Vision, color, and visual optics : Vision system - noninvasive assessment
(330.7327) Vision, color, and visual optics : Visual optics, ophthalmic instrumentation
(110.7348) Imaging systems : Wavefront encoding

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: March 17, 2014
Revised Manuscript: May 20, 2014
Manuscript Accepted: May 20, 2014
Published: June 27, 2014

Citation
Justo Arines, Rene O. Hernandez, Stefan Sinzinger, A. Grewe, and Eva Acosta, "Wavefront-coding technique for inexpensive and robust retinal imaging," Opt. Lett. 39, 3986-3988 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-13-3986

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