Lissajous confocal fluorescent endomicroscopy with a lever mechanism and a frequency separation by an asymmetric polymer tube

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We present a confocal fluorescent endomicroscopic system with a Lissajous scan using an asymmetric polymer tube and piezoelectric (PZT) tube actuator. The fiber cantilever's scanning part is often inside the PZT tube actuator to reduce the scanner's rigid length and enhance the beam deflection via a lever mechanism. Here, the mathematical model of the PZT tube actuator-based lever mechanism is first proposed by considering the piezoelectric parameters of the actuator and Euler-Bernoulli beam deflection, showing a good agreement with experimental data. In addition, an elliptical polymer tube is used to divide the resonant frequencies of the fiber cantilever, allowing enough scanning amplitudes and alleviating the inherent cross-coupling issue of a PZT tube actuator. The design optimization is performed by selecting the optimal lever length and the shape of the PFA tube. The implemented endomicroscopic probe could successfully acquire imaging results from both a lens-cleaning tissue and an ex-vivo mouse colon.
Publisher
TAYLOR & FRANCIS INC
Issue Date
2023-12
Language
English
Article Type
Article
Citation

INTERNATIONAL JOURNAL OF OPTOMECHATRONICS, v.17, no.1

ISSN
1559-9612
DOI
10.1080/15599612.2023.2238009
URI
http://hdl.handle.net/10203/311480
Appears in Collection
ME-Journal Papers(저널논문)
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