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Proceedings Paper

Flexible lensless endoscope with a conformationally invariant multi-core fiber (Conference Presentation)
Author(s): Hervé Rigneault; Viktor Tsvirkun; Siddharth Sivankutty; Geraud Bouwmans; Olivier Vanvincq; Esben Andresen

Paper Abstract

The lensless endoscope represents the ultimate limit in miniaturization of imaging tools: an image can be transmitted through a (multi-mode or multi-core) fiber by numerical or physical inversion of the fiber's pre- measured transmission matrix. However, the transmission matrix changes completely with only minute conformational changes of the fiber, which has so far limited lensless endoscopes to fibers that must be kept static. In this work we report a lensless endoscope which is exempt from the requirement of static fiber by designing and employing a custom-designed conformationally invariant fiber. We give experimental and theoretical validations and determine the parameter space over which the invariance is maintained.

Paper Details

Date Published: 11 March 2020
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Proc. SPIE 11248, Adaptive Optics and Wavefront Control for Biological Systems VI, 112480P (11 March 2020); doi: 10.1117/12.2545004
Show Author Affiliations
Hervé Rigneault, Aix Marseille Univ. (France)
CNRS (France)
Ecole Centrale de Marseille (France)
Viktor Tsvirkun, Aix Marseille Univ. (France)
CNRS (France)
Ecole Centrale de Marseille (France)
Siddharth Sivankutty, Aix Marseille Univ. (France)
CNRS (France)
Ecole Centrale de Marseille (France)
Geraud Bouwmans, Univ. de Lille (France)
CNRS (France)
Lab. de Physique des Lasers, Atomes et Molécules (France)
Olivier Vanvincq, Univ. de Lille (France)
CNRS (France)
Lab. de Physique des Lasers, Atomes et Molécules (France)
Esben Andresen, Univ. de Lille (France)
CNRS (France)
Univ. de Lille (France)


Published in SPIE Proceedings Vol. 11248:
Adaptive Optics and Wavefront Control for Biological Systems VI
Thomas G. Bifano; Sylvain Gigan; Na Ji, Editor(s)

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