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Mostrando ítems 53-54 de 54

  • Transparent glass slab thickness measurement by binary-spot focus signal 

    Aguilar, Andrés; Torga, Jorge Román (2019-12-12)
    Focus error systems based on the astigmatic principle relying on four quadrant photo detectors as the signal generation element have widely been used in many different applications. Nevertheless, its working principle ...

  • Wide band interferometryforthicknessmeasurement 

    Constantino, Santiago; Martínez, Oscar; Torga, Jorge Román (2003)
    In thisworkwepresentthe concept of wide band interferometry as opposed to white-light interferometry to introduce a thickness measurementmethodthatgainsprecisionwhenthebandwidthisreduced to anadequatecompromise in order ...