| 多谱段多通道离轴三反空间相机装调 |
| 投稿时间：2020-09-01 修订日期：2020-09-08 点此下载全文 |
| 引用本文：邢辉,张占东,刘剑峰,宋俊儒,金忠瑞,刘志远.多谱段多通道离轴三反空间相机装调[J].红外,2020,41(12):36~40 |
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| 中文摘要:针对离轴三反多谱段空间相机光学件自由度多、通道多且装调复杂的难题，进行了光学仿真分析和计算机辅助装调。根据光学设计结果，设计了基于光线追迹的视场光阑，给出了红外通道和可见光通道的波像差，仿真分析了次镜和三镜的灵敏度矩阵。用可见光干涉仪对全反射式红外通道进行了装调。根据干涉仪得到的Zernike像差系数，并结合计算机辅助装调仿真结果，以主镜为基准，调整次镜与三镜的空间位置关系，直至系统波前满足设计要求。装调结果表明，红外通道的中心视场RMS为0.15λ (λ=632.8 nm)，边缘视场RMS为0.33λ；可见光通道的中心视场RMS为0.06λ，边缘视场RMS为0.07λ。考虑到加工和装调误差，装调结果与设计基本一致。相机在轨图像清晰，成像质量高。 |
| 中文关键词:空间相机 多谱段 多通道 装调 |
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| Alignment of Multispectral and Multichannel off-axis TMA Space Camera |
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| Abstract:The optical simulation analysis and computer-aided alignment are carried out to solve the problems of multidegree of freedom, multichannel and complex alignment of optical components of off-axis three mirror multispectral space camera. According to the results of optical design, field aperture based on ray tracing is designed. The wavefront aberrations of infrared channel and visible channel are given. The sensitivity matrix of secondary mirror and three mirror is simulated and analyzed. According to the Zernike aberration coefficient obtained by the interferometer and the computer-aided alignment simulation results, the spatial position relationship between the secondary mirror and the three mirrors is adjusted based on the primary mirror until the wavefront of the system meets the design requirements. The result of infrared channel alignment is: central field of view RMS 0.15λ (λ= 632.8nm), edge field of view RMS 0.33λ. Field of view of visible light communication center RMS 0.06λ and edge field of view RMS 0.07λ. Considering the error of machining and assembly, the results of assembly and adjustment are basically consistent with the design. The on-orbit image of the camera is clear and the image quality is high. |
| keywords:space camera multispectral multichannel alignment |
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