Image quality in microendoscopy: critical issues

Ramiro Conde; Olivier Coquoz; Christian D. Depeursinge; Fatemeh Taleblou

doi:10.1117/12.197585

23 December 1994 Image quality in microendoscopy: critical issues

Ramiro Conde, Olivier Coquoz, Christian D. Depeursinge, Fatemeh Taleblou

Proceedings Volume 2327, Medical Applications of Lasers II; (1994) https://doi.org/10.1117/12.197585
Event: International Symposium on Biomedical Optics Europe '94, 1994, Lille, France

Abstract

The quality of microendoscopic images ((phi) < 0.5 mm) results from numerous factors. The microlens, the optical interfaces, and the multicore fiber (MCF) play a role. The intercomparison of the performances of these various components requires a precise evaluation of their modulation transfer function (MTF). The MTFs of a representative sample of MCFs have been evaluated in detail and the results presented in previous communications. The sampling density, the cross-talk, and to a lesser extent the leaky modes and propagation in the cladding have been found to be the main factors worsening the MTF. The Selfoc Grin lens also limits, in a non-negligible proportion, the overall quality of the microendoscopic image. Comparative data have been obtained with a slightly modified evaluation procedure for the MTF. This synthetic analysis results in a global understanding of the factors limiting the performances of microendoscopes.

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Ramiro Conde, Olivier Coquoz, Christian D. Depeursinge, and Fatemeh Taleblou "Image quality in microendoscopy: critical issues", Proc. SPIE 2327, Medical Applications of Lasers II, (23 December 1994); https://doi.org/10.1117/12.197585

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KEYWORDS

Modulation transfer functions

Image quality

Spatial frequencies

Image transmission

Laser applications

Medical laser equipment

Geometrical optics

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