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    Area of Science:

    • Optics and Photonics
    • Optical Engineering
    • Display Technology

    Background:

    • Existing optical target simulation systems struggle to cover both ultraviolet (UV) and visible light spectral ranges simultaneously.
    • Composite simulation of multi-source spatial targets demands a versatile system capable of operating across broad spectral bands.

    Purpose of the Study:

    • To develop a novel ultraviolet-visible composite optical target simulation technique.
    • To address the limitations of single-system spectral range coverage in optical target simulation.
    • To enable accurate simulation of multi-source spatial targets across UV and visible spectra.

    Main Methods:

    • Utilized a liquid crystal display (LCD) as a spatial light modulation device.
    • Established a composite light source model combining ultraviolet light-emitting diodes (LEDs) and a xenon lamp.
    • Employed an integrating sphere for light mixing and homogenization.
    • Analyzed LCD light transmission principles and derived working band-transmittance equations.
    • Designed a wide spectral range transmission-type projection system.

    Main Results:

    • Successfully enhanced energy simulation for the ultraviolet portion of the spectrum.
    • Demonstrated the capability to simulate optical targets across a wide working spectral range.
    • Achieved high accuracy in interstellar angular distance and magnitude simulations.

    Conclusions:

    • The proposed LCD-based optical target simulator effectively meets the demands for wide spectral range simulation.
    • The technique provides high accuracy in angular distance and magnitude, crucial for advanced target simulation.
    • This advancement enables more comprehensive and realistic simulations for UV and visible light applications.