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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Franco Gori
  • Vol. 30, Iss. 7 — Jul. 1, 2013
  • pp: 1441–1447

Echelette optical low-pass filter as a Bangerter filter for diagnosis and treatment of amblyopia and diplopia

Yuriy Borodin, Viacheslav Petrov, and Anatoliy Lapchuk  »View Author Affiliations

JOSA A, Vol. 30, Issue 7, pp. 1441-1447 (2013)

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This paper presents a new echelette optical low-pass filter that serves as a Bangerter filter (BF) for diagnosis and treatment of amblyopia and diplopia. Theoretical analysis and experimental measurements showed that echelette BFs have several advantages over the modern BFs used in medicine. Four echelette BFs with different grating periods and one BF were manufactured, and image blurring in an optical visual system with an echelette BF was experimentally investigated. The experimentally measured modulation transfer function and line spread function demonstrated definite image blurring (line expansion) that is inversely proportional to the width of the grating period. The results of measurements of the angular resolution of the optical system with an echelette BF coincide well with the results obtained by theory.

© 2013 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(110.4100) Imaging systems : Modulation transfer function
(330.1070) Vision, color, and visual optics : Vision - acuity
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: February 20, 2013
Revised Manuscript: May 30, 2013
Manuscript Accepted: June 10, 2013
Published: June 28, 2013

Virtual Issues
Vol. 8, Iss. 8 Virtual Journal for Biomedical Optics

Yuriy Borodin, Viacheslav Petrov, and Anatoliy Lapchuk, "Echelette optical low-pass filter as a Bangerter filter for diagnosis and treatment of amblyopia and diplopia," J. Opt. Soc. Am. A 30, 1441-1447 (2013)

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