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    題名: Out-of-plane light-scattering polarimetric imaging of a thread surface
    其他題名: 螺紋表面特徵的平面外散射光偏振成像研究
    作者: Cheng-Yang Liu;Li-Jen Chang
    貢獻者: 機械與機電工程學系暨研究所
    關鍵詞: Light scattering;Bidirectional ellipsometry;Screw
    日期: 2014-12
    上傳時間: 2014-07-17 11:58:34 (UTC+8)
    出版者: Elsevier Ltd
    摘要: A novel polarimetric measurement based on hemispherical light-scattering for the assessment of
    superficial screw is presented. The optical system is capable of capturing polarized light images. The
    effect of the thread surface backscattering is estimated with the use of in-plane and out-of-plane
    illumination. The angular distributions of polarized light scattered by the ISO metric screws are
    measured for light incident from a green laser. A partial Stokes vector imaging detector is mounted
    on a motorized rotating arm at an oblique angle to the sample normal and consists of a 10-bit scientific
    camera, an object lens, and a polarizer. The partial Stokes vector images of light scattered towards the
    camera are generated for each direction and a useful decomposition of the partial Stokes vector is
    presented. The thread surface effects can be minimized using out-of-plane polarized illumination in
    conjunction with polarized images. The experimental result may provide a new polarized imaging
    technique for using visible light to inspect the key features of a screw in automated optical inspection
    system.
    關聯: Optics and Lasers in Engineering 63, pp.76-81
    DOI: 10.1016/j.optlaseng.2014.06.018
    顯示於類別:[機械與機電工程學系暨研究所] 期刊論文

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