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7 March 2022 Needle-shaped lensless holographic endoscopes realized with TPP
Willi G. Mantei, Benedikt Stender, Jonas Wiedenmann, Elias Scharf, Robert Kuschmierz, Jürgen Czarske
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Proceedings Volume PC11953, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXII; PC119530L (2022) https://doi.org/10.1117/12.2608705
Event: SPIE BiOS, 2022, San Francisco, 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.
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Willi G. Mantei, Benedikt Stender, Jonas Wiedenmann, Elias Scharf, Robert Kuschmierz, and Jürgen Czarske "Needle-shaped lensless holographic endoscopes realized with TPP", Proc. SPIE PC11953, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXII, PC119530L (7 March 2022); https://doi.org/10.1117/12.2608705
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KEYWORDS
Endoscopes
Holography
Diffractive optical elements
Stereoscopy
Visualization
3D printing
Endoscopy
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