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Browsing by Author "CHOU, C"

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    A PRECISION ALIGNMENT WITH MOIRE TECHNIQUE AND DIFFERENTIAL-AMPLIFIER
    (1992-06-01)
    CHANG, TC
    ;
    WU, CW
    ;
    CHOU, C
    ;
    光電工程學系
    ;
    Department of Photonics
    A precision alignment technique is developed. We combined a moire and a differential amplifier to align two Ronchi rulings with high accuracy. The precision of this technique can reach submicron level if higher spatial frequency of the ruling is used.