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High-plex Imaging using Spectral Confocal Microscopy to Minimize Non-specific Tissue Fluorescence
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Spectrally multiplexed chromatic confocal multipoint sensing.

Matthias Hillenbrand, Lucia Lorenz, Roman Kleindienst

    Optics Letters
    |December 11, 2013
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel chromatic confocal distance sensing technique using spectral multiplexing. This innovation enables parallelized measurement of multiple points, enhancing efficiency in industrial applications.

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    Area of Science:

    • Optics and Photonics
    • Sensing Technology
    • Metrology

    Background:

    • Chromatic confocal microscopy encodes distance via spectral distribution.
    • Parallelized sensing is crucial for efficient industrial metrology.
    • Existing methods may lack robustness in harsh environments.

    Purpose of the Study:

    • To develop a parallelized chromatic confocal distance sensing system.
    • To enable simultaneous measurement at multiple lateral points.
    • To create a sensor robust for production environments.

    Main Methods:

    • Utilizing dual-level spectral multiplexing for distance encoding.
    • Employing a segmented diffractive element for lateral point assignment.
    • Integrating a single-point spectrometer without scanning functionality.

    Main Results:

    • Demonstrated a functional three-point chromatic confocal sensor.
    • Achieved a working distance exceeding 50 mm.
    • Obtained a measurement range of 9 mm with 50 μm axial resolution.

    Conclusions:

    • The developed sensor is suitable for harsh production environments.
    • The spectral multiplexing approach allows for parallelized lateral measurements.
    • This technique offers a robust and efficient solution for distance sensing.