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Development of multiple-surface optical elements for road lighting.

Sergey V Kravchenko, Egor V Byzov, Mikhail A Moiseev

    Optics Express
    |March 1, 2017
    PubMed
    Summary
    This summary is machine-generated.

    This study presents a novel method for designing free-form LED optics for road illumination, achieving perfect efficiency and uniformity. The developed optical elements meet stringent lighting standards, offering versatile performance for various road conditions.

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    Area of Science:

    • Optics and Photonics
    • Illumination Engineering
    • Materials Science

    Background:

    • Designing efficient LED secondary optics for road illumination presents significant challenges.
    • Requirements include maximal efficiency, high luminance, and uniform illuminance.

    Purpose of the Study:

    • To demonstrate a modified supporting quadric method for designing free-form optical solutions.
    • To create optical elements that perfectly satisfy road illumination requirements.

    Main Methods:

    • Utilized a modified supporting quadric method for optical design.
    • Computed and manufactured two free-form optical elements via injection molding.
    • Measured performance using a photometry bench.

    Main Results:

    • The designed optical elements achieved light distributions meeting ME1 class requirements of EN 13201.
    • Experimental data confirmed high efficiency and illuminance uniformity.
    • Obtained directivity patterns are universal, performing well with varying luminaire arrangements (pole altitude to distance ratio from 2.5 to 3.6).

    Conclusions:

    • The modified supporting quadric method is effective for generating high-performance free-form LED optics for road illumination.
    • The developed optics meet international standards and offer adaptable solutions for diverse roadway lighting scenarios.