3D Shape Measurement of Solar Concentrator Based on Orthogonal Fringe Reflection Method
Abstract
Fringe reflection technique is an effective tool to measure the solar concentrator surface slopes, and then reconstruct the surface shape from gradient. However, most of the fringe reflection systems are based on four-step phase shifting method, which need eight figures at least. In order to increase the measurement speed, a new orthogonal fringe reflection method is proposed to measure the shape of solar concentrator, which requires only two fringe images to complete the 3D shape measurement of solar concentrator. The performance of this 3D shape measurement system is demonstrated with experiments.
Keywords
Shape measurement, orthogonal fringe reflection, solar concentrator