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.
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