Influence of refractive index of reflective film on polarization imaging characteristics of golay3 sparse aperture optical system

XU An; CHEN Baohua; WU Quanying; FAN Junliu; LIU Xiyu

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Influence of refractive index of reflective film on polarization imaging characteristics of golay3 sparse aperture optical system

Optical Devices & System Design | 更新时间：2026-05-20

- Influence of refractive index of reflective film on polarization imaging characteristics of golay3 sparse aperture optical system
- OPTICAL TECHNIQUE Vol. 52, Issue 3, Pages: 308-317(2026)
- 作者机构：
  
  1.江苏省高校低碳能源高效转化与利用重点实验室苏州科技大学物理科学与技术学院，江苏苏州 215009, China
  2.江苏省研究生工作站苏州一光仪器有限公司，江苏苏州 215006
  3.江苏省研究生工作站张家港市光学仪器有限公司，江苏苏州215616
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH75
- Received：05 February 2026，
  
  Revised：2026-02-11，
  
  Published：20 May 2026
- 稿件说明：
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徐安,陈宝华,吴泉英等.反射镜膜层折射率对Golay3稀疏孔径光学系统偏振成像特性的影响研究[J].光学技术,2026,52(03):308-317.

XU An,CHEN Baohua,WU Quanying,et al.Influence of refractive index of reflective film on polarization imaging characteristics of golay3 sparse aperture optical system[J].OPTICAL TECHNIQUE,2026,52(03):308-317.
徐安,陈宝华,吴泉英等.反射镜膜层折射率对Golay3稀疏孔径光学系统偏振成像特性的影响研究[J].光学技术,2026,52(03):308-317. DOI：

XU An,CHEN Baohua,WU Quanying,et al.Influence of refractive index of reflective film on polarization imaging characteristics of golay3 sparse aperture optical system[J].OPTICAL TECHNIQUE,2026,52(03):308-317. DOI：

摘要

稀疏孔径光学成像系统可有效降低体积与重量，在天文观测与遥感领域具有广阔应用前景。针对Golay3稀疏孔径成像系统，通过偏振光线追迹计算系统在不同反射镜膜层折射率下的偏振像差，获取斯托克斯参数并开展成像仿真。结果表明：随着膜层折射率的增加，Golay3 稀疏孔径光学系统的二向衰减显著增强，相位延迟则轻微减弱；振幅响应矩阵和调制传递矩阵的非对角元素变化显示，膜层折射率的增加会导致偏振串扰随之增强。成像仿真进一步表明，降低膜层折射率可显著改善Golay3系数孔径光学系统的成像质量。当膜层折射率

从1.5降至0.5，斯托克斯分量

的峰值信噪比、清晰度评价值和边缘保持指数分别提升4.1%、26.0%和25.7%。采用较低的膜层折射率能有效抑制Golay3稀疏孔径光学系统的偏振像差，从而更好地保持图像的清晰度、对比度及纹理细节。

Abstract

Sparse-aperture optical imaging systems can effectively reduce system volume and weight

offering broad application prospects in astronomical observation and remote sensing. A Golay3 sparse-aperture imaging system is investigated. Polarization ray tracing is performed to calculate the polarization aberrations under different refractive indices of the reflective mirror coating

and the Stokes parameters are obtained for imaging simulation. The results show that as the refractive index of the coating increases

the diattenuation of the Golay3 sparse-aperture system increases significantly

while the phase retardance decreases slightly. The variations in the off-diagonal elements of the amplitude response matrix （ARM） and the modulation transfer matrix （MTM） indicate that the increase in the coating refractive index leads to enhanced polarization crosstalk. Imaging simulation further demonstrates that reducing the coating refractive index can significantly improve the imaging quality of the Golay3 sparse-aperture system. When the refractive index decreases from 1.5 to 0.5

the peak signal-to-noise ratio （PSNR）

sharpness evaluation value

and edge preservation index （EPI） of the Stokes component

increase by 4.1%

26.0%

and 25.7%

respectively. Adopting a lower refractive index of the reflective coating can effectively suppress the polarization aberrations of the Golay3 sparse-aperture optical syst

thereby better preserving image clarity

contrast

and texture details.

关键词

Keywords

references

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