Počet záznamů: 1

White-light fringe detection based on a novel light source and colour CCD camera

  1. 1.
    0366037 - UPT-D 2012 RIV GB eng J - Článek v odborném periodiku
    Buchta, Zdeněk - Mikel, Břetislav - Lazar, Josef - Číp, Ondřej
    White-light fringe detection based on a novel light source and colour CCD camera.
    Measurement Science and Technology. Roč. 22, č. 9 (2011), 094031:1-6 ISSN 0957-0233
    Grant CEP: GA ČR GP102/09/P293; GA ČR GP102/09/P630; GA MPO 2A-1TP1/127; GA MŠk(CZ) LC06007; GA MŠk ED0017/01/01
    Výzkumný záměr: CEZ:AV0Z20650511
    Klíčová slova: low-coherence interferometry * phase-crossing algorithm * CCD camera * gauge block
    Kód oboru RIV: BH - Optika, masery a lasery
    Impakt faktor: 1.494, rok: 2011

    We describe in this paper a pilot experiment of optimization of a white-light source for a low-coherence interferometry. The white-light source combines the light beams generated with colour LEDs. By modelling the white-light spectra, the contrast of a white-light interference fringe could be changed and set to the maximal value. The second part of this paper is a description of a white-light fringe analysis ensured with a low-cost colour CCD camera. The used detection technique employs a phase-crossing algorithm which identifies a zero optical path difference as the point where the phase difference between the red, green and blue parts of the white-light interference fringe becomes equal to zero. The optimized white-light source is designed to be a crucial part of an experimental setup for the surface diagnostics and automatic calibration of gauge blocks.
    Trvalý link: http://hdl.handle.net/11104/0201137