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/@#}Gc 在光学设计中有人经常碰到这样的问题，光学镜头的指标中有两项对于畸变的要求 :X.b}^ Z( ^SxY IFL 一个是DISTORTION，另一个是TV DISTORTION > ;L6xt3 X=hYB}}n u 其中的TV 畸变很多人不知道它的含义，再此给大家提供以下信息供参考，看了之后TV 畸变的概念就很清楚了 ( @t(?Js BlXB7 q, ANJ$'3tg x*?x=^I{ What is distortion? an|x$e7|? Distortion is the ratio of the change between the center and edge areas of a captured image. Due to the aberration of the lens, the distortion is more noticeable at the edges of a captured image. There are two types of distortion: barrel distortion and pincushion distortion. The general rule is that when the absolute value of the distortion value is smaller, the lens offers higher accuracy. sA'6ty UG2nX 3? Calculating formula >c9a0A TV distortion (Dtv) = Δh/2h x 100 (%) lmfi A positive value of TV distortion indicates s0DGC pincushion distortion and a negative value |_`E1Y}} indicates barrel distortion. et,f_fd7v m Mb'@ 原帖网址：http://www.opto-tech.com/read.php?tid-3086.html }"=AG 3H|_mX
