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Proceedings Paper

Testing a form of a pump blade by optical moire topography
Author(s): Miroslav Hrabovsky; Jiri Keprt; Ludek Bartonek
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Paper 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.

Paper Details

Date Published: 14 July 1999
PDF: 8 pages
Proc. SPIE 3820, 11th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, (14 July 1999); doi: 10.1117/12.353054
Show Author Affiliations
Miroslav Hrabovsky, Joint Lab. for Optics at Palacky Univ. and Institute of Physics (Czech Republic)
Jiri Keprt, Joint Lab. for Optics at Palacky Univ. and Institute of Physics (Czech Republic)
Ludek Bartonek, Palacky Univ. (Czech Republic)


Published in SPIE Proceedings Vol. 3820:
11th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics
Miroslav Hrabovsky; Anton Strba; Waclaw Urbanczyk, Editor(s)

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