最近閑的無聊，看zemax的macro 下面有個宏里自帶的macro，原樣附下，討論下標(biāo)記為 ****************************的作用，為什么要以漸暈為判斷標(biāo)準(zhǔn)，這個漸暈的真正作用是干什么的？附下RAYV（）->如果無漸暈則為0，否則為漸暈面的編號。(0 if ray was not vignetted,else vignetted surface number.valid only after a RAYTRACE or RAYTRACEEX call)。若大神賜教，小弟感激流涕············· KoO\<_@";  
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macro 正文：········· B=J/HiwV)  
! centroid.zpl IDr$Vu4LCW  
! 3ZU<u;  
! Written by Kenneth Moore 9/1/92 ;l'kPUv([  
! Added TIMER function 4/18/96 a]|k w4  
! 
`jB2'  
TIMER v_Y'o _  
! WgQ6EV`  
! The delta controls how many rays will be traced. A JK9}Kb};  
! delta of .025 will trace a 80 x 80 grid in the pupil. _w>9Z>PR  
! J#'+&DH  
delta = .025 (~FLG I  
! y1:#0  
print "This program computes the chief ray coordinates," kKg%[zXS  
print "centroid coordinates, and middle coordinates for" A1,- qv1s  
print "the primary wave spot at each field position." z!6:Dt6^  
maxfield = maxf() RW. >;|m  
if maxfield == 0 then maxfield = 1 y~\K~qjd  
n = nsur() (j;6}@  
f = 1 E
64d6z^7u  
label 1 zn|/h,.  
hx = fldx(f)/maxfield N2^B  
hy = fldy(f)/maxfield .2 /$ !'E  
raytrace hx,hy,0,0 *FT )`  
format 10.4 [1*3 kt*h  
print i@M^9|Gh  
print "  X Field    = ", fldx(f), =a.avOZ  
print "  Y Field    = ", fldy(f) Gp/yr  
print "  X Chief    = ",rayx(n), :9`T.V<?  
print "  Y Chief    = ",rayy(n) s) vHLf4