The effect of collimator lenses on the performance of an optical coherence tomography system

Pauli Fält, Robert Zawadzki, Barry Cense

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The effect of using collimator lenses with different focal lengths on the performance of a spectral-domain adaptive optics optical coherence tomography (AO-OCT) system has been studied. In vivo OCT scans of a healthy human retina were taken separately with different collimator lenses. Although shorter focal length lenses provide a smaller beam diameter at the pupil of the eye, and therefore a larger diffraction-limited spot size, on the return path the shorter focal length collimators demonstrate a better performance focusing the sinc-function-like intensity distribution returning from the eye on the fiber tip. The results might have applications in the OCT imaging of challenging cases.

Original languageEnglish (US)
Title of host publicationOphthalmic Technologies XXI
StatePublished - Apr 1 2011
EventOphthalmic Technologies XXI - San Francisco, CA, United States
Duration: Jan 22 2011Jan 24 2011


OtherOphthalmic Technologies XXI
Country/TerritoryUnited States
CitySan Francisco, CA


  • adaptive optics
  • collimator lens
  • human eye
  • optical coherence tomography
  • retina
  • system performance

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging


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