Optical systems design used for laser smoothing in far field

Xianying Ge; Tian Lan; Yinchao Zhang; Guoqiang Ni

doi:10.1117/12.836546

31 August 2009 Optical systems design used for laser smoothing in far field

Xianying Ge, Tian Lan, Yinchao Zhang, Guoqiang Ni

Proceedings Volume 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging; 738242 (2009) https://doi.org/10.1117/12.836546
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

Laser smoothing technology is employed not only in near field but also in far field in order to make images of scenes on the ground on the basis of echoes in systems such as 3-D imaging lidar. In this paper, the principle of superposition after partition is described in detail. Two methods for laser smoothing are introduced, one of which is lens array, capable of attaining a large area of uniform illumination in far-field, and the other one is birefringent lenses, suitable to obtain a small area of uniform illumination in far-field. A comparison is made about the performance characteristics of the two methods from different aspects. This provides a reference about how to choose smoothing methods to achieve uniform irradiation.

Citation Download Citation

Xianying Ge, Tian Lan, Yinchao Zhang, and Guoqiang Ni "Optical systems design used for laser smoothing in far field", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 738242 (31 August 2009); https://doi.org/10.1117/12.836546

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