Comparison of continuous and discrete frequency-versus-radius frequency-modulated reticles

James S. Taylor, Ronald G. Driggers, Carl E. Halford, Jeffrey S. Sanders, Steven T. Griffin, Michael Wellfare

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We present a general expression for the transmission function of the discrete frequency-versus-radius reticle and compare such a reticle with the more common continuous reticle. A discrete form of the frequency-versus-radius reticle has an integer number of chopping cycles on a single radius. The discrete form limits the resolution of the reticle in the radial direction, but this limit is not severe for small-target images. However, since no phase reversal occurs, electronic processing is simplified.

Original languageEnglish (US)
Pages (from-to)1638-1640
Number of pages3
JournalApplied optics
Issue number10
StatePublished - Apr 1992
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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