31 October 2016 Three-dimensional illumination system for tomographic particle image velocimetry
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Tomographic particle image velocimetry (Tomo-PIV) is a new developed technique for three-component threedimensional (3C-3D) velocity measurement of the flow field based on the optical tomographic reconstruction method, and has been received extensive attention of the related industries. Three-dimensional light source illuminating the tracer particles of flow field is a critical application for tomographic particle image velocimetry. Three-dimensional light source not only determines the size of measurement volume and the range of the scope of application, but also has a great influence on the image quality. In this work, we propose a rectangular light amplification system using powell lens, prisms and two reflectors. The system can be optimized if given the system parameters based on the theoretical model. The rectangular light amplification system will be verified experimentally by measuring the cross section size of the illuminated light source. A 60mm×25mm cross section of rectangular three-dimensional light source can be obtained by using the rectangular light amplification system. The experiments demonstrate the the feasibility the proposed system.
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Fen Zhang, Fen Zhang, Yang Song, Yang Song, Xiangju Qu, Xiangju Qu, Yunjing Ji, Yunjing Ji, Zhenhua Li, Zhenhua Li, Anzhi He, Anzhi He, } "Three-dimensional illumination system for tomographic particle image velocimetry", Proc. SPIE 10021, Optical Design and Testing VII, 100211D (31 October 2016); doi: 10.1117/12.2245992; https://doi.org/10.1117/12.2245992


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