Flexible lensless endoscope with a conformationally invariant multi-core fiber (Conference Presentation)

Hervé Rigneault; Viktor Tsvirkun; Siddharth Sivankutty; Geraud Bouwmans; Olivier Vanvincq; Esben Andresen

doi:10.1117/12.2545004

11 March 2020 Flexible lensless endoscope with a conformationally invariant multi-core fiber (Conference Presentation)

Hervé Rigneault, Viktor Tsvirkun, Siddharth Sivankutty, Geraud Bouwmans, Olivier Vanvincq, Esben Andresen

Proceedings Volume 11248, Adaptive Optics and Wavefront Control for Biological Systems VI; 112480P (2020) https://doi.org/10.1117/12.2545004
Event: SPIE BiOS, 2020, San Francisco, California, United States

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.

Conference Presentation

Citation Download Citation

Hervé Rigneault, Viktor Tsvirkun, Siddharth Sivankutty, Geraud Bouwmans, Olivier Vanvincq, and Esben Andresen "Flexible lensless endoscope with a conformationally invariant multi-core fiber (Conference Presentation)", Proc. SPIE 11248, Adaptive Optics and Wavefront Control for Biological Systems VI, 112480P (11 March 2020); https://doi.org/10.1117/12.2545004

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KEYWORDS

Endoscopes

Image transmission

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