Abstract
This research aims at realizing the shape measurement of liquid surface of Stereolithogfaphy. The unevenness on a resin liquid surface causes deterioration of accuracy. Although the smoothing device is equipped with Stereorithograhy, there is no good method to measure the unevenness of liquid surface. It is always difficult to make liquid surface smooth. From this reason, this paper proposes a liquid surface shape measuring method. The measuring method uses the total reflection image, which is a grating pattern distorted by the uneven liquid surface. The factors of the measurement error of this method are listed out, and the influence of measurement error on each factor is analyzed by a simulator. Furthermore, the shape with actual uneven surface was measured and measurement accuracy was investigated. From the result of analysis and the measurement, it is applicable to Stereolithography.
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