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Related Concept Videos

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Related Experiment Video

Updated: Oct 2, 2025

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT
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Prism-based tri-aperture laparoscopic objective for multi-view acquisition.

Elliott Kwan, Hong Hua

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    |February 25, 2022
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    Summary
    This summary is machine-generated.

    This study introduces a novel tri-aperture laparoscopic objective lens for enhanced surgical visualization. It simultaneously captures stereoscopic views for depth and a wide field of view for situational awareness, improving surgical precision.

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    Area of Science:

    • Medical Imaging
    • Surgical Technology
    • Optical Engineering

    Background:

    • Minimally invasive surgery (MIS) requires advanced visualization tools.
    • Current laparoscopic systems often compromise between depth perception and field of view.
    • Accurate depth information is crucial for complex surgical maneuvers.

    Purpose of the Study:

    • To design and prototype a novel tri-aperture monocular laparoscopic objective.
    • To enable simultaneous acquisition of stereoscopic views and a wide field of view (FOV).
    • To utilize the wide FOV for improved situational awareness and stereo calibration.

    Main Methods:

    • A shared objective with two displaced apertures and a custom prism for stereoscopic imaging.
    • A vignetting aperture to minimize crosstalk between stereoscopic views.
    • A central third aperture for capturing a wide 2D FOV.

    Main Results:

    • The prototype successfully acquired simultaneous stereoscopic and wide FOV images.
    • Crosstalk between stereoscopic channels was effectively reduced.
    • The wide FOV provided a 2x larger surgical field view compared to stereoscopic views.
    • Demonstrated wide FOV utility for stereo calibration and absolute depth mapping.

    Conclusions:

    • The tri-aperture objective offers a promising solution for enhanced laparoscopic visualization.
    • This technology integrates depth perception and situational awareness in a single device.
    • Potential to improve surgical accuracy and safety in minimally invasive procedures.