中国光学2016，Vol.9Issue(3)：349-355,7.DOI:10.3788/CO.20160903.0349
采用 APD 阵列的共口径激光成像光学系统设计
Laser imaging optical system design with a shared aperture employing APD array
摘要
Abstract
To meet the requirements of light and small laser 3D imaging system on airborne platforms,a co-aperture laser transceiver optical system is designed employing APD array.On the basis of a brief analysis of the imaging system illumination pattern and optical system structure,the laser 3D imaging system block dia-gram is given as following:the laser beam can pass through a diffraction element to achieve beam splitting and the mirror with a hole in the middle is used to achieve coupled launching/transmitting optical path.The optical system is used for three-dimensional imaging within a distance of 2 km,and the receiving optical system pa-rameters are determined according to the laser operating range equation to obtain enough echo energy to satisfy the noise ratio.In order to avoid crosstalk between pixels,beam expander of five times is designed.Finally, the stray light is diminished to reduce the impact of the emitted light path on receiving light path by combining the polaroid and quarter-wave plate.The results indicate that the receiving optics has a diffuse spot diameter less than 120 μm and distortion less than 0.2%.The whole optical system could be an example for the similar design with small size,light weight and fine imaging quality.关键词
光学设计/激光 3D 成像/发射/接收共光路/消杂光Key words
optical design/laser 3D imaging/launching/receiving common aperture/stray light elimination分类
信息技术与安全科学引用本文复制引用
于潇,姚园,徐正平..采用 APD 阵列的共口径激光成像光学系统设计[J].中国光学,2016,9(3):349-355,7.基金项目
中国科学院国防科技创新基金项目（No．CXJJ-14-S123）；吉林省科技发展计划资助项目（20150204022GX）@@@@Innovation Fund Project of National Defense Science and Technology，Chinese Academy of Sci-ences （No．CXJJ-14-S123）， Jilin Provincial S＆T Development Program Project of China （）
