在此基础上，采用球面坐标定位校正方法进行图像扭曲变形校正，取得了较好的图像校正效果。

And a satisfactory effect of fisheye image distortion correction is ultimately achieved by applying spherical coordinate orientation approach based on scans line approach.

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讨论了双贴合无光焦度校正板放在次镜后的双反射球面系统。

A two-sphere system with a two-lens zero-power corrector placed behind the secondary mirror was discussed.

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透镜表面完全采用非球面设计，较好地校正了球差等各种像差，使透镜具有良好的光学成像性能。

The profiles of the three lenses were designed as aspheric surfaces so as to correct the aberration and ensure the excellent optical performance.

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