Acoustic grating fringe projector for high-speed and high-precision three-dimensional shape measurements

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Date: May 20, 2007
From: Applied Optics(Vol. 46, Issue 15)
Publisher: Optical Society of America
Document Type: Author abstract
Length: 107 words

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Abstract :

A new acoustic grating fringe projector (AGFP) was developed for high-speed and high-precision 3D measurement. A new acoustic grating fringe projection theory is also proposed to describe the optical system. The AGFP instrument can adjust the spatial phase and period of fringes with unprecedented speed and accuracy. Using rf power proportional-integral-derivative (PID) control and CCD synchronous control, we obtain fringes with fine sinusoidal characteristics and realize high-speed acquisition of image data. Using the device, we obtained a precise phase map for a 3D profile. In addition, the AGFP can work in running fringe mode, which could be applied in other measurement fields. OCIS codes: 150.6910, 230.1040, 120.0120.

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Gale Document Number: GALE|A163865263