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Proceedings Paper

Dual modality multiphoton-OCT flexible endomicroscope with an integrated electromagnetic z-actuator for optical field-of-view switching and a piezo-fiber-scanner for image acquisition
Author(s): Bernhard Messerschmidt; Gregor Matz; Sven Flämig; Karl Reichwald; Ekaterina Pshenay-Severin; Andreas Kamm; Claudia Reinlein; Teresa Kopf; Beatrice Korn; Karsten Kühnert; David Vasquez; Marianne Heilmann; Thomas Frank; Thomas Sattel; Tom Ströhla; Xiang Lu; Herbert Gross
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Paper Abstract

A miniature endomicroscope is presented that combines a large field-of-view (up to 1.7 mm) for OCT-imaging and a high-resolution mode with 360 μm field-of-view (NA = 0.5) for multi-photon fluorescence or OCT imaging. The 4.7x magnification variation is achieved by the axial positioning of an inner micro-optical lens group using an integrated electro-magnetic z-actuator. A reverse fiber-optic piezotube-scanner with minimized length is employed for the image acquisition by resonant spiral scanning. With the probe diameter of 2.7 mm and a rigid length of about 60 mm, the approach may pave the way to clinical applications of these two modalities in a single probe.

Paper Details

Date Published: 19 February 2020
PDF: 14 pages
Proc. SPIE 11214, Endoscopic Microscopy XV, 112140X (19 February 2020); doi: 10.1117/12.2543382
Show Author Affiliations
Bernhard Messerschmidt, Grintech GmbH (Germany)
Gregor Matz, Grintech GmbH (Germany)
Sven Flämig, Grintech GmbH (Germany)
Karl Reichwald, Grintech GmbH (Germany)
Ekaterina Pshenay-Severin, Grintech GmbH (Germany)
Andreas Kamm, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Claudia Reinlein, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Teresa Kopf, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Beatrice Korn, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Karsten Kühnert, piezosystem jena GmbH (Germany)
David Vasquez, piezosystem jena GmbH (Germany)
Marianne Heilmann, piezosystem jena GmbH (Germany)
Thomas Frank, Technische Univ. Ilmenau (Germany)
Thomas Sattel, Technische Univ. Ilmenau (Germany)
Tom Ströhla, Technische Univ. Ilmenau (Germany)
Xiang Lu, Friedrich-Schiller-Univ. Jena (Germany)
Herbert Gross, Friedrich-Schiller-Univ. Jena (Germany)

Published in SPIE Proceedings Vol. 11214:
Endoscopic Microscopy XV
Guillermo J. Tearney M.D.; Thomas D. Wang; Melissa J. Suter, Editor(s)

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