Lensless holographic endoscopes realized with direct laser writing

Willi G. Mantei; Jonas Wiedenmann; Benedikt Stender; Elias Scharf; Robert Kuschmierz; Jürgen Czarske

doi:10.1117/12.2661816

30 April 2023 Lensless holographic endoscopes realized with direct laser writing

Willi G. Mantei, Jonas Wiedenmann, Benedikt Stender, Elias Scharf, Robert Kuschmierz, Jürgen Czarske

Author Affiliations +

Proceedings Volume PC12497, Novel Patterning Technologies 2023; PC124970L (2023) https://doi.org/10.1117/12.2661816
Event: SPIE Advanced Lithography + Patterning, 2023, San Jose, California, United States

Abstract

Recently, 3D imaging endoscopes have made their way into endoscopy and enable three-dimensional visualization. While many of them require optics with mounts increasing the fibers diameter, two-photon polymerization enables mount-free fabrication of optical elements directly on the tip of fibers. Using multicore fibers combined with diffractive optical elements (DOE) enables the phase to be taken into account in measurements in addition to intensity, enabling 3D imaging. While each multicore fiber has an individual distribution of phase differences, an individual DOE is required, which can be fabricated rapidly and stitching-free with high precision using maskless 3D lithography.

Conference Presentation

Citation Download Citation

Willi G. Mantei, Jonas Wiedenmann, Benedikt Stender, Elias Scharf, Robert Kuschmierz, and Jürgen Czarske "Lensless holographic endoscopes realized with direct laser writing", Proc. SPIE PC12497, Novel Patterning Technologies 2023, PC124970L (30 April 2023); https://doi.org/10.1117/12.2661816

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