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Proceedings Paper

Three-dimensional beam focusing control for lensless vascular endoscopes using local wavefront control
Author(s): Masaki Hisaka
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Paper Abstract

In this study, the focusing beam generated by an optical fiber bundle having locally optical delay has been investigated to simplify the structure of vascular endoscopes. The wavefront propagating within each fiber core is delayed locally by an optical delay system. Each diffraction beam emitted from the fiber core forms a superimposed convergent wave. The optical delays make arbitrary beam focusing after the light exits the bundle. We have demonstrated the beam focusing and three-dimensional scanning of the beam using a liquid lens. In this experiment, six points of unnecessary convergent light, which depended on the hexagonal lattice structures of the bundle, were also formed at the same time.

Paper Details

Date Published: 24 April 2018
PDF: 2 pages
Proc. SPIE 10711, Biomedical Imaging and Sensing Conference, 107111N (24 April 2018); doi: 10.1117/12.2319167
Show Author Affiliations
Masaki Hisaka, Osaka Electro-Communication Univ. (Japan)

Published in SPIE Proceedings Vol. 10711:
Biomedical Imaging and Sensing Conference
Toyohiko Yatagai; Yoshihisa Aizu; Osamu Matoba; Yasuhiro Awatsuji; Yuan Luo, Editor(s)

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