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Acta Armamentarii ›› 2019, Vol. 40 ›› Issue (8): 1658-1664.doi: 10.3969/j.issn.1000-1093.2019.08.014

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Design of Static Spectral Polarization Imaging System with Double Wollaston Prism

ZHAO Yiwu1,2, DUAN Yun1,3, LI Yingchao1,2, SHI Haodong1,4, JIANG Lun1, WANG Chao1, LIU Zhuang1, LI Guanlin1   

  1. （1.NUERC of Space Optoelectronics Technology, Changchun University of Science and Technology, Changchun 130022, Jilin, China;2.Defense Key Subject Laboratory of Aero and Ground Laser Communication Technology, Changchun University of Science and Technology, Changchun 130022, Jilin, China; 3.School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022, Jilin, China; 4.Jilin Province Key Laboratory of Space Optoelectronics Technology, Changchun University of Science and Technology, Changchun 130022, Jilin, China)
  • Received:2018-11-02 Revised:2018-11-02 Online:2019-10-15

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Abstract: A static spectral polarization imaging system based on double Wollaston prism is proposed for the complex structure or moving parts of traditional spectral polarization imaging systems. According to the Stokes spectral modulation theory, a static spectral polarization imaging system with dual Wollaston prism is designed by using the polarization characteristics and beamsplitting principle of double Wollaston prism. The image side telecentric design is used for the pre-telescope system, and the object side telecentric design is used for the post-spectral polarization splitting system to achieve pupil matching. The whole structure adopts a spherical mirror and has no moving parts. It can simultaneously acquire the spectral and polarization information of target. The operating wavelength of the system is 450-900 nm, the focal length is 275 mm, the aperture is 90 mm, and the field of view is 2.35°. The analysis results show that full-field-of-view modulation transfer function (MTF) of the system is better than 0.55 at the Nyquist frequency of 90 lp/mm, and the imaging quality is close to the diffraction limit, which satisfies the imaging requirements.Key

Key words: spectralpolarization, doubleWollastonprism, simulationdesign

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