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The optical design for a dual modality endoscope based on piezo scanning fiber technology is presented including a
novel technique to combine forward-viewing navigation and side viewing OCT. Potential applications include
navigating body lumens such as the fallopian tube, biliary ducts and cardiovascular system. A custom cover plate
provides a rotationally symmetric double reflection of the OCT beam to deviate and focus the OCT beam out the side of
the endoscope for cross-sectional imaging of the tubal lumen. Considerations in the choice of the scanning fiber are
explored and a new technique to increase the divergence angle of the scanning fiber to improve system performance is
presented. Resolution and the necessary scanning density requirements to achieve Nyquist sampling of the full image are
considered. The novel optical design lays the groundwork for a new approach integrating side-viewing OCT into
multimodality endoscopes for small lumen imaging.
KEYWORDS:
Tyler H. Tate,Davis McGregor, andJennifer K. Barton
"Single lens system for forward-viewing navigation and scanning side-viewing optical coherence tomography", Proc. SPIE 10040, Endoscopic Microscopy XII, 100400H (15 February 2017); https://doi.org/10.1117/12.2271555
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Tyler H. Tate, Davis McGregor, Jennifer K. Barton, "Single lens system for forward-viewing navigation and scanning side-viewing optical coherence tomography," Proc. SPIE 10040, Endoscopic Microscopy XII, 100400H (15 February 2017); https://doi.org/10.1117/12.2271555