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

Shinichi Komatsu, Toshio Morioko, Hitoshi Ohzu

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    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.

    Original languageEnglish
    Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
    EditorsHenri H. Arsenault
    Place of PublicationBellingham, WA, USA
    PublisherSPIE
    Pages123-131
    Number of pages9
    Volume556
    ISBN (Print)0892525916
    Publication statusPublished - 1985

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    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Condensed Matter Physics

    Cite this

    Komatsu, S., Morioko, T., & Ohzu, H. (1985). LENS TESTING METHOD BASED ON THE BOILING PHENOMENON OF LASER SPECKLE. In H. H. Arsenault (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 556, pp. 123-131). SPIE.