OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 23, Iss. 4 — Feb. 15, 1984
  • pp: 565–570

Automatic focus control: the astigmatic lens approach

Donald K. Cohen, Wing Ho Gee, M. Ludeke, and Julian Lewkowicz  »View Author Affiliations

Applied Optics, Vol. 23, Issue 4, pp. 565-570 (1984)

View Full Text Article

Enhanced HTML    Acrobat PDF (475 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



The use of an astigmatic lens to generate a position error signal (PES) suitable for servo control is discussed. A simple computer model was written that can predict adequately the performance of an astigmatic system. The effect of various system parameters on the PES is presented.

© 1984 Optical Society of America

Original Manuscript: July 29, 1983
Published: February 15, 1984

Donald K. Cohen, Wing Ho Gee, M. Ludeke, and Julian Lewkowicz, "Automatic focus control: the astigmatic lens approach," Appl. Opt. 23, 565-570 (1984)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. L. J. Laub, IEEE Trans. Consum. Electron. CE-22, 258 (1976). [CrossRef]
  2. G. Bouwhuis, J. J. M. Braat, Appl. Opt. 17, 1993 (1978). [CrossRef] [PubMed]
  3. A. M. Earman, “Optical Focus Servo for Optical Disk Mass Data Storage System Application,” Proc. Soc. Photo-Opt. Instrum. Eng. 329, (1982).
  4. C. Bricot, J. C. Lehureau, C. Pucch, IEEE Trans. Consum. Electron. CE-22, 304 (1978). [CrossRef]
  5. A. Yariv, Quantum Electronics (Wiley, New York, 1975).
  6. This is only true for a lens actuator which has a restoring force such as a support spring exerted on it.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited