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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 d2US~.;>l
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一个是DISTORTION,另一个是TV DISTORTION TOgH~R=
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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 ;{&4jcV*
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What is distortion? 8'zfq
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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. Oml3=TV
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Calculating formula x*tCm8`{
TV distortion (Dtv) = Δh/2h x 100 (%) oRcP4k;d=
A positive value of TV distortion indicates +XX5;;IC
pincushion distortion and a negative value 38l:Y"
indicates barrel distortion. y?3u6q++
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原帖网址:http://www.opto-tech.com/read.php?tid-3086.html yLnTIE 3)
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