將一個(gè)面的表面類型設(shè)為擴(kuò)展多項(xiàng)式（Extended Polynomial）后，extra data編輯框里的第二項(xiàng)norm radius是什么呢？應(yīng)該怎么設(shè)置呢？ L%H\|>k`  
zemax manual里的說(shuō)明是“Normalization radius. All ray-intercept points are divided by this number to determine the x and y coordinates for polynomial evaluation.”，但是沒看懂，請(qǐng)問(wèn)大家怎么理解？ <5L99<E  
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描述:zemax manual里的說(shuō)明1

圖片:exp1.jpg

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描述:zemax manual里的說(shuō)明2

圖片:exp2.jpg

  

generally this should be the semi-diameter of the surface. What "normalized" implies that the maximum is scaled to 1 and the rest of the cooridnates are calculated as a ratio.. This is similar to Normalized Coordinates used for pupil interception. See the Normalized Field/Pupil Coorindates in the user manual. gIO_mJ3 u  
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Hope this helps ..

歸一化半徑，比如你要擬合鏡子半徑為70mm，擬合時(shí)通常在單位圓內(nèi)進(jìn)行，擬合前要把數(shù)據(jù)歸一化，即x,y除以70。擬合后，擬合系數(shù)輸入對(duì)應(yīng)系數(shù)項(xiàng)，而Normalization radius項(xiàng)呢就應(yīng)該設(shè)置為70.

不太懂呵呵

理解不能 求指點(diǎn)

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