LENS TESTING METHOD BASED ON THE BOILING PHENOMENON OF LASER SPECKLE.

Shinichi Komatsu*, Toshio Morioko, Hitoshi Ohzu

*この研究の対応する著者

    研究成果: Conference contribution

    1 被引用数 (Scopus)

    抄録

    The boiling phenomenon of the subjective laser speckle produced by a moving diffuser is applied for lens testing by two methods, in one of which the temporal auto-correlation of the fluctuating signal detected at a certain point in the speckle field is used for measuring the modulation transfer function (MTF) of the lens through which the speckle is produced. Using an automated MTF measuring system developed on this principle, some experimental results are obtained for an ordinary camera lens as well as a gradient-index (GRIN) rod lens. In the other method, the spatial cross-correlation of two speckle patterns produced before and after the diffuser translation is used for visualizing the non-uniformity of imaging capability of a GRIN rod-lens-array.

    本文言語English
    ホスト出版物のタイトルProceedings of SPIE - The International Society for Optical Engineering
    編集者Henri H. Arsenault
    Place of PublicationBellingham, WA, USA
    出版社SPIE
    ページ123-131
    ページ数9
    556
    ISBN(印刷版)0892525916
    出版ステータスPublished - 1985

    ASJC Scopus subject areas

    • 電子工学および電気工学
    • 凝縮系物理学

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