A design of cylindrical lens for linear CCD used in dynamic envelope curve measurement of high-speed train

Yan Zhang; Changjie Liu; Luhua Fu; Haiqing Liu

doi:10.1117/12.2193570

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7 August 2015 A design of cylindrical lens for linear CCD used in dynamic envelope curve measurement of high-speed train

Yan Zhang, Changjie Liu, Luhua Fu, Haiqing Liu

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Proceedings Volume 9623, 2015 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 962308 (2015) https://doi.org/10.1117/12.2193570
Event: International Conference on Optical Instruments and Technology 2015, 2015, Beijing, China

Abstract

The dynamic envelope curve measurement of high-speed train based on linear CCDs has the advantage of high measuring frequency and speed, and the design of cylindrical lens for linear CCD is essential. A design of cylindrical lens for linear CCD is presented according to the actual measurement requirements. A double-Gauss objective is selected as the basic type in ZAMAX. By appropriately changing the surface of the lens, adjusting various parameters and multiple optimizations, the optical structure is defined. The design can fulfill the requirement of the actual measurement system. Furthermore, by analyzing the image distortion characteristics of cylindrical lens, a kind of distortion model is built. According to the distortion cure of the final optical structure, the cylindrical lens distortion formula is defined based on the primary aberration theory, which provides the basis for the distortion correction of one-dimensional camera.

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Yan Zhang, Changjie Liu, Luhua Fu, and Haiqing Liu "A design of cylindrical lens for linear CCD used in dynamic envelope curve measurement of high-speed train", Proc. SPIE 9623, 2015 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 962308 (7 August 2015); https://doi.org/10.1117/12.2193570

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