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Proceedings Paper

Image quality in microendoscopy: critical issues
Author(s): Ramiro Conde; Olivier Coquoz; Christian D. Depeursinge; Fatemeh Taleblou
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Paper 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.

Paper Details

Date Published: 23 December 1994
PDF: 8 pages
Proc. SPIE 2327, Medical Applications of Lasers II, (23 December 1994); doi: 10.1117/12.197585
Show Author Affiliations
Ramiro Conde, Ecole Polytechnique Federale de Lausanne (Switzerland)
Olivier Coquoz, Ecole Polytechnique Federale de Lausanne (Switzerland)
Christian D. Depeursinge, Ecole Polytechnique Federale de Lausanne (Switzerland)
Fatemeh Taleblou, Ecole Polytechnique Federale de Lausanne (Switzerland)


Published in SPIE Proceedings Vol. 2327:
Medical Applications of Lasers II
Stephen G. Bown; J. Escourrou; Frank Frank; Herbert J. Geschwind; Guilhem Godlewski; Frederic Laffitte; Hans H. Scherer, Editor(s)

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