采用APD阵列的共口径激光成像光学系统设计

于潇; 姚园; 徐正平

doi:10.3788/CO.20160903.0349

Volume 9 Issue 3

May 2016

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Article Contents

Chinese Optics > 2016 > 9(3): 349-355.

YU Xiao, YAO Yuan, XU Zheng-ping. Laser imaging optical system design with a shared aperture employing APD array[J]. Chinese Optics, 2016, 9(3): 349-355. doi: 10.3788/CO.20160903.0349

Citation:

YU Xiao, YAO Yuan, XU Zheng-ping. Laser imaging optical system design with a shared aperture employing APD array[J]. Chinese Optics, 2016, 9(3): 349-355. doi: 10.3788/CO.20160903.0349

YU Xiao, YAO Yuan, XU Zheng-ping. Laser imaging optical system design with a shared aperture employing APD array[J]. Chinese Optics, 2016, 9(3): 349-355. doi: 10.3788/CO.20160903.0349

Citation:

YU Xiao, YAO Yuan, XU Zheng-ping. Laser imaging optical system design with a shared aperture employing APD array[J]. Chinese Optics, 2016, 9(3): 349-355. doi: 10.3788/CO.20160903.0349

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Laser imaging optical system design with a shared aperture employing APD array

doi: 10.3788/CO.20160903.0349

Key Laboratory of Airborne Optical Imaging and Measurement, Changchun Institute of Optics Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

Funds:

Supported by Innovation Fund Project of National Defense Science and Technology, Chinese Academy of Sciences No.CXJJ-14-S123

Jilin Provincial S & T Development Program Project of China No.20150204022GX

Received Date: 26 Jan 2016
Rev Recd Date: 23 Feb 2016
Publish Date: 25 Jan 2016

Abstract

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 diagram 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 parameters 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.
- optical design,
- laser 3D imaging,
- launching/receiving common aperture,
- stray light elimination

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References(16)

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