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Proceedings Paper

Full-field time-dependent heterodyne interferometer for shape measurement: theory and experiment
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Paper Abstract

12 Heterodyne interferometry is a powerful tool for shape measurement. However, to the present day there are only a few papers devoted to full field, time dependent heterodyne interferometry. Most of known solutions are based on the point measurement, and the shape is obtained by scanning in the examined area. In this paper a full field heterodyne system using the fringe projection principle and fast framing DALSA CA-D1 CCD camera is proposed and discussed. Due to frequency shift between interfering beams the interference pattern is traveling over the object surface and allows heterodyne registration. The use of a fast camera is a certain approximation of classical heterodyning.

Paper Details

Date Published: 12 February 2001
PDF: 10 pages
Proc. SPIE 4190, Optomechatronic Systems, (12 February 2001); doi: 10.1117/12.417218
Show Author Affiliations
Tomasz S. Tkaczyk, Warsaw Univ. of Technology (United States)
Romulad Jozwicki, Warsaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 4190:
Optomechatronic Systems
Hyungsuck Cho; George K. Knopf, Editor(s)

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