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Electrically switchable diffractive optical element for image processing

M Stalder, P Ehbets

    Optics Letters
    |October 16, 2009
    PubMed

    Abstract:

    An electrically switchable diffractive optical element has been built based on a computer-generated phase hologram and a liquid-crystal layer. The design of the diffractive optical element and the fabrication and performance of the device are discussed. The application of the device in a machine vision system for optical surface inspection is shown.

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