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General design algorithm for stray light suppression of a panoramic annular system.

Yiqi Liao, Shaohua Gao, Jian Bai

    Optics Express
    |July 21, 2023
    PubMed
    Summary
    This summary is machine-generated.

    A new algorithm designs stray light-free panoramic annular lens (PAL) systems. This method predicts and eliminates stray light early in optical design, improving system performance.

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    Area of Science:

    • Optical Engineering
    • Photonics
    • Image Science

    Background:

    • Panoramic annular lenses (PALs) are crucial for ultra-wide field-of-view imaging.
    • Stray light significantly degrades the performance of optical systems, especially PALs.
    • Current stray light analysis can be computationally intensive and time-consuming.

    Purpose of the Study:

    • To propose a universal algorithm for designing PAL systems that are free from stray light.
    • To enable early-stage estimation of stray light impact without full analysis.
    • To optimize lens parameters for stray light suppression in PAL design.

    Main Methods:

    • Development of a universal algorithm for stray light analysis in PAL systems.
    • Early-stage estimation of stray light paths and their impact.
    • Optimization of lens parameters to eliminate identified stray light paths.
    • Design and implementation of a 360° × (40°-100°) PAL system to validate the method.

    Main Results:

    • The proposed algorithm successfully identified and enabled the elimination of critical stray light paths.
    • Simulations demonstrated a 2-order-of-magnitude decrease in point source transmittance (PST) within a specific field-of-view (FoV) range.
    • Experimental results confirmed the simulation predictions, showing the total elimination of two types of stray light.
    • The optimized PAL system exhibited significantly improved performance due to stray light suppression.

    Conclusions:

    • The developed algorithm provides an effective and efficient method for stray light analysis and suppression in PAL design.
    • This approach facilitates the development of high-performance, ultra-wide angle optical systems.
    • The method is promising for advancing research and development in advanced optical imaging technologies.