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DMD-based hyperspectral imaging system with tunable spatial and spectral resolution.

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    A novel hyperspectral imaging (HSI) system replaces bulky slits with a digital micromirror device (DMD), enabling tunable resolution and multiple scanning modes for diverse applications like remote sensing and medical imaging.

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    Area of Science:

    • Optics and Photonics
    • Imaging Technology
    • Spectroscopy

    Background:

    • Traditional pushbroom hyperspectral imaging (HSI) systems suffer from limited field of view (FOV) and high energy consumption due to bulky slit components.
    • These limitations hinder HSI's applicability in various fields requiring broad coverage and efficient operation.

    Purpose of the Study:

    • To propose and demonstrate a versatile HSI system that overcomes the drawbacks of conventional slit-based designs.
    • To introduce a digital micromirror device (DMD)-based HSI system offering enhanced flexibility and performance.

    Main Methods:

    • Replaced the mechanical scanning slit with a smart digital micromirror device (DMD) for HSI data acquisition.
    • Implemented tunable spatial resolution by adjusting the on-chip scanning linewidth.
    • Achieved tunable spectral resolution through a pixel fusion method.
    • Developed three distinct scanning modes: rough, fine, and regional scanning.

    Main Results:

    • The proposed DMD-based HSI system demonstrates tunable spatial and spectral resolution capabilities.
    • The system successfully integrates multiple scanning modes, enhancing operational flexibility.
    • The new design addresses limitations of traditional HSI, offering a larger FOV and reduced energy consumption.

    Conclusions:

    • The developed DMD-based HSI system presents a versatile and intelligent solution for hyperspectral imaging.
    • Its adaptability makes it suitable for a wide range of applications, including military, remote sensing, medical, and food industries.
    • The system's tunable resolution and flexible scanning modes offer significant advantages over conventional HSI technologies.