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Related Experiment Video

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Flexible long-wave infrared snapshot multispectral imaging with a pixel-level spectral filter array.

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    |June 29, 2023
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    This study introduces a flexible long-wave infrared (LWIR) imaging system using a spectral filter array. It enables snapshot multispectral imaging and easy switching to intensity imaging for diverse LWIR applications.

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    Area of Science:

    • Optics and Photonics
    • Infrared Technology
    • Imaging Systems

    Background:

    • Long-wave infrared (LWIR) imaging is crucial for various applications.
    • Existing multispectral LWIR systems can be complex and lack flexibility.
    • Snapshot imaging capabilities are desirable for capturing dynamic scenes.

    Purpose of the Study:

    • To propose and demonstrate a flexible LWIR snapshot multispectral imaging system.
    • To simplify the design and enhance the functionality of LWIR imaging systems.
    • To enable adaptable imaging modes for practical applications.

    Main Methods:

    • Development of a re-imaging system integrated with a pixel-level spectral filter array.
    • Acquisition of six-band multispectral images in the 8-12 µm range.
    • Strategic placement of the filter array at the primary imaging plane to reduce packaging complexity.

    Main Results:

    • Successful demonstration of a six-band LWIR snapshot multispectral imager.
    • Achieved spectral bands with a full width at half maximum (FWHM) of approximately 0.7 µm.
    • Showcased flexible switching between multispectral and intensity imaging modes.

    Conclusions:

    • The proposed system offers a flexible and simplified approach to LWIR snapshot multispectral imaging.
    • The design facilitates easy functional switching, enhancing its versatility.
    • This technology holds potential for various practical LWIR detection applications.