Abstract
We focus on the experimented system development for the measurement of the gap of LCD glass plates. The measurement system includes a laser light source, lens module, image capturing system and the algorithm for calculation of the position of light spots. We emphasize the structure of laser triangulation in an optical system. The software is focused on the algorithm for calculating the position of light point, including centroid calculation method (CCM) and Fourier phase shift (FPS). Furthermore, to verify the feasibility of the algorithm, we use computer software to simulate experiments. We also discuss the contribution of the noise to the accuracy for the CCM and FPS. To complete the development of the opto-electrical measurement system and to verify the accuracy for the hardware architecture, we use a novel mechanism of multi-track and concentricity, laser light source, lens module, and image capturing system.
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