Testing a form of a pump blade by optical moire topography

Miroslav Hrabovsky; Jiri Keprt; Ludek Bartonek

doi:10.1117/12.353054

14 July 1999 Testing a form of a pump blade by optical moire topography

Miroslav Hrabovsky, Jiri Keprt, Ludek Bartonek

Proceedings Volume 3820, 11th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics; (1999) https://doi.org/10.1117/12.353054
Event: Eleventh Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 1998, Stara Lesna, Slovakia

Abstract

To study a form of a space object of large dimensions and depth, the optical moire topography can be used as one of the advisable non-contact measuring methods. The moire pattern can be realized by projection of a grating from two directions on a studied object. The resulting moire pattern is a contour line system showing equal depth from any fundamental plane, if the light sources lie on a plane parallel to this fundamental plane. CCD video camera provided with a special video-signal-filtering unit was used to improve moire-topographical image. This better visualization of moire pattern enables adjustment of the TV signal for its direct computer processing. Obtained contour line system can be considered as a map describing in high precision the space form of a testing object.

Citation Download Citation

Miroslav Hrabovsky, Jiri Keprt, and Ludek Bartonek "Testing a form of a pump blade by optical moire topography", Proc. SPIE 3820, 11th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, (14 July 1999); https://doi.org/10.1117/12.353054

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