It is pointed out that, it is incorrect to speak of the ovoid spiral scanning system as an elliptical scanning system.
指出把卵形螺旋线扫描系统叫做椭圆扫描系统是不正确的。
A complete design example of elliptical window optical system is demonstrated and the results show that the MTF of optical system approaches the diffraction limit across the entire scanning field.
给出了完整的椭球形窗口光学系统的设计，设计结果表明，系统的调制传递函数在整个扫描视场范围内接近衍射极限。
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