Laser system measures changes in position or roughness of surface without physical contact. Using optical correlation technique, displacement of surface is measured by reflection of laser beam and holographic correlation filtering system. System also determines changes in roughness or shape of surface.


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    Title :

    Measuring surface displacements optically


    Contributors:
    Owen, R. B. (author)

    Published in:

    Publication date :

    1979-01-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English