Linear astigmatism of confocal off-axis reflective imaging systems and its elimination

Appl Opt. 2006 Jan 20;45(3):484-8. doi: 10.1364/ao.45.000484.

Abstract

Linear astigmatism of a confocal off-axis reflective imaging system when the object plane is tilted and located at a finite distance from the imaging system is derived. We show that linear astigmatism can be eliminated by proper configuration of the parent mirror axes in confocal off-axis two-mirror systems. The tilt angle of the image plane is also derived. The developed theory is verified by ray-tracing analysis of an example system.

Publication types

  • Evaluation Study

MeSH terms

  • Algorithms*
  • Artifacts*
  • Computer Simulation
  • Image Enhancement / methods*
  • Image Interpretation, Computer-Assisted / methods*
  • Linear Models
  • Microscopy, Confocal / methods*
  • Reproducibility of Results
  • Sensitivity and Specificity