可以用一个非常小的透镜孔阑来校正球差，但这会严重地影响最终鉴别率。
A very small lens aperture is employed to correct spherical aberration , but this severely limits the final resolution.
通过该方法设计得到的透镜，体积小，高出光效率，光束准确可控，可得到满足道路照明需要的矩形规则均匀光斑。
The lens designed by this method has small size, high light efficient, accurate beam control, it can achieve the required uniform rectangular facula for the street lighting.
用模压成形方法生产小尺寸非球面透镜是最经济、重复性最好的方法。
Using molding methods to produce small aspherical elements is the best economic way with the best repetitiveness.
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