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Applied Optics

Applied Optics


  • Vol. 28, Iss. 6 — Mar. 15, 1989
  • pp: 1047–1048

for the value of integralCollimation invariant technique for measuring the focal length of a lens

Joseph L. Horner  »View Author Affiliations

Applied Optics, Vol. 28, Issue 6, pp. 1047-1048 (1989)

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We report a method for measuring the effective focal length of a lens without knowing the degree of collimation or the location of the principal planes of the lens.

© 1989 Optical Society of America

Original Manuscript: July 28, 1988
Published: March 15, 1989

Joseph L. Horner, "for the value of integralCollimation invariant technique for measuring the focal length of a lens," Appl. Opt. 28, 1047-1048 (1989)

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  1. K. A. Hoagland, “Focal Length Determining System,” U.S. Pat.3,495,913 (17 Feb.1970).
  2. J. L. McLaughlin, “Focus-Position Sensing Using Laser Speckle,” Appl. Opt. 18, 1042 (1979). [CrossRef] [PubMed]
  3. P. T. Kaestner, “Apparatus for Determining Focus,” U.S. Pat.3,917,409 (4 Nov.1975).
  4. T. D. Wise, J. B. Young, “Precise Measurement of Effective Focal Length,” Appl. Opt. 22, 3918 (1983).
  5. J. L. Horner, J. R. Leger, “Pattern Recognition with Binary Phase-Only Filters,” Appl. Opt. 24, 609 (1985). [CrossRef] [PubMed]

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