[讨论]公差分析结果的疑问 [复制链接]

我现在在初学zemax的公差分析，找了一个双胶合透镜 e,xJ%f  
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图片:1.JPG

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然后添加了默认公差分析，基本没变 EL%Pv1  
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图片:2.jpg

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然后运行分析的结果如下： Adet5m.|[8  
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Analysis of Tolerances .AQTUd(_  
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File : E:\光学设计资料\zemax练习\f500.ZMX o^/ fr&,9  
Title: +U<.MVOo.  
Date : TUE JUN 21 2011 [0 rH/{  
lKf kRyO_S  
Units are Millimeters. 0$NzRPbH  
All changes are computed using linear differences. M?Fv'YE  
FRL;fF  
Paraxial Focus compensation only. H]*B5Jv~  
N A_8<B^  
WARNING: Solves should be removed prior to tolerancing. H@1qU|4  
$m-C6xC/  
Mnemonics: <(~Wg{  
TFRN: Tolerance on curvature in fringes. QpiDBJCL  
TTHI: Tolerance on thickness. Hq~SRc~  
TSDX: Tolerance on surface decentering in x. gK"(;Jih$  
TSDY: Tolerance on surface decentering in y. Dw 5Ze  
TSTX: Tolerance on surface tilt in x (degrees). S;/pm$?/  
TSTY: Tolerance on surface tilt in y (degrees). ?=1i:h  
TIRR: Tolerance on irregularity (fringes). g~(
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TIND: Tolerance on Nd index of refraction. fGW~xul_  
TEDX: Tolerance on element decentering in x. 6(7dr?^eGT  
TEDY: Tolerance on element decentering in y. |Om9(xT  
TETX: Tolerance on element tilt in x (degrees). 82V;J 8T?  
TETY: Tolerance on element tilt in y (degrees). >)Bv>HM  
@HE?G  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. l)~$/#k  
6OJhF7\0&  
WARNING: Boundary constraints on compensators will be ignored. EY.m,@{  
Lo Y*,Aa&  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm fN21[Jv3  
Mode                : Sensitivities 5/T#>l<  
Sampling            : 2 A;6ew
4  
Nominal Criterion   : 0.54403234 b_u; `^  
Test Wavelength     : 0.6328 yigq#h^  
d/@P;YN!  
I"QU{]|J  
Fields: XY Symmetric Angle in degrees yMmUOIxk\  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY J/,m'wH  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 wbk$(P'gN  
X`-o0HG  
Sensitivity Analysis: K(?p]wh  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| Fiw^twz5  
Type                      Value      Criterion        Change          Value      Criterion        Change 83aWMmA(1  
Fringe tolerance on surface 1 P?jI:'u!R.  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 )jjaY1E  
Change in Focus                :      -0.000000                            0.000000 nU6UjC|3  
Fringe tolerance on surface 2 NSR][h_  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 6(Ntt  
Change in Focus                :       0.000000                            0.000000 |@f\[v9`  
Fringe tolerance on surface 3 uu>R)iTQ%S  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 >66 `hZ  
Change in Focus                :      -0.000000                            0.000000 Sw?EF8}[  
Thickness tolerance on surface 1 ~at:\h4:  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ZXIz.GFy+  
Change in Focus                :       0.000000                            0.000000 PIoBKCJ  
Thickness tolerance on surface 2 X+N8r^&  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 */|<5X;xIA  
Change in Focus                :       0.000000                           -0.000000 fhC|=0XB  
Decenter X tolerance on surfaces 1 through 3 HXPq+  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 9ESV[  
Change in Focus                :       0.000000                            0.000000 _~}2@&*G"  
Decenter Y tolerance on surfaces 1 through 3 dVn_+1\L  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 <,U$Y>  
Change in Focus                :       0.000000                            0.000000 @%fL*^yr;C  
Tilt X tolerance on surfaces 1 through 3 (degrees) : JS
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TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 XPnHi@x  
Change in Focus                :       0.000000                            0.000000 fP$rOJ)P  
Tilt Y tolerance on surfaces 1 through 3 (degrees) .SNg
2.  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 WSGho(\  
Change in Focus                :       0.000000                            0.000000 o1-_BlZ  
Decenter X tolerance on surface 1 ,3!4 D^  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 rD9:4W`^  
Change in Focus                :       0.000000                            0.000000 'T;;-M3*  
Decenter Y tolerance on surface 1 Nu'ox. V  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 *9EW&Ek  
Change in Focus                :       0.000000                            0.000000 . lNf.x#u  
Tilt X tolerance on surface (degrees) 1 POX{;[SV  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Wr'1Y7z  
Change in Focus                :       0.000000                            0.000000 Hxleh><c-  
Tilt Y tolerance on surface (degrees) 1 $ ?|;w,%I  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 rd)W+W9  
Change in Focus                :       0.000000                            0.000000 T8yMaC  
Decenter X tolerance on surface 2 Q{yjIy/b  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 )t CNp  
Change in Focus                :       0.000000                            0.000000 p%K(dA  
Decenter Y tolerance on surface 2 h 9}x6t,  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 LC\U6J't1  
Change in Focus                :       0.000000                            0.000000 Ds#BfP7a  
Tilt X tolerance on surface (degrees) 2 b[:{\!I  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 )ybF@emc  
Change in Focus                :       0.000000                            0.000000 hVui.]  
Tilt Y tolerance on surface (degrees) 2 ;|:R*(2   
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 E=`/
}2  
Change in Focus                :       0.000000                            0.000000 `PSjkF(  
Decenter X tolerance on surface 3 jx2{kK  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 C2\zbC[qm  
Change in Focus                :       0.000000                            0.000000 |.L_c"Bc  
Decenter Y tolerance on surface 3 i4nFjz  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 e6^}XRyf  
Change in Focus                :       0.000000                            0.000000 "fW }6pS  
Tilt X tolerance on surface (degrees) 3 M>}_2G]#F  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 TwI'XMO;A  
Change in Focus                :       0.000000                            0.000000 TBRG D l  
Tilt Y tolerance on surface (degrees) 3 f8`dJ5i  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 *ZxurbX#  
Change in Focus                :       0.000000                            0.000000 \ Ce
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Irregularity of surface 1 in fringes c*\;!dbP  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 &b7_%,Bx
4  
Change in Focus                :       0.000000                            0.000000 d325Cw?  
Irregularity of surface 2 in fringes CPMGsW^  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 (z?j{J  
Change in Focus                :       0.000000                            0.000000 ~"NuYM#@  
Irregularity of surface 3 in fringes QR_h#N2h  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 VCJOWUEO1  
Change in Focus                :       0.000000                            0.000000 _(I6o  
Index tolerance on surface 1 Ak8Y?#"wz  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Rn]xxa'  
Change in Focus                :       0.000000                            0.000000 y@It#!u0  
Index tolerance on surface 2 a^pbBDi W  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 32j}ep.*  
Change in Focus                :       0.000000                           -0.000000 0H]{,mVs  
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Worst offenders:
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Type                      Value      Criterion        Change D79:L:  
TSTY   2            -0.20000000     0.35349910    -0.19053324 e}S+1G6r)  
TSTY   2             0.20000000     0.35349910    -0.19053324 >]z^.U7=  
TSTX   2            -0.20000000     0.35349910    -0.19053324 R&J?XQ  
TSTX   2             0.20000000     0.35349910    -0.19053324 BP0:<vK{  
TSTY   1            -0.20000000     0.42678383    -0.11724851 2vX
$:4  
TSTY   1             0.20000000     0.42678383    -0.11724851 7t:tS7{}  
TSTX   1            -0.20000000     0.42678383    -0.11724851 G3%Ju=  
TSTX   1             0.20000000     0.42678383    -0.11724851 P(TBFu  
TSTY   3            -0.20000000     0.42861670    -0.11541563 8.Y|I5l7G  
TSTY   3             0.20000000     0.42861670    -0.11541563 \r[u>7I  
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Estimated Performance Changes based upon Root-Sum-Square method: ,3y9yJQa*#  
Nominal MTF                 :     0.54403234 cgSN:$p(R  
Estimated change            :    -0.36299231 FutS  
Estimated MTF               :     0.18104003 T?t/[iuHrj  
Zrr)<'!i  
Compensator Statistics: MA6 Vy  
Change in back focus: !NkCki"W  
Minimum            :        -0.000000 ElV!C}g  
Maximum            :         0.000000 -6HwGfU  
Mean               :        -0.000000 Kbf(P95+uL  
Standard Deviation :         0.000000 pB
8D  
"4)N]Nj  
Monte Carlo Analysis: 0)332}Oh  
Number of trials: 20  p;w&}l{{  
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Initial Statistics: Normal Distribution :~vodh  
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  Trial       Criterion        Change !i^"3!.l,]  
      1     0.42804416    -0.11598818 D=TS IJ@  
Change in Focus                :      -0.400171 ir_XU/ve  
      2     0.54384387    -0.00018847 >+P}S@  
Change in Focus                :       1.018470 O -1O@:}c  
      3     0.44510003    -0.09893230 ~v.mbh  
Change in Focus                :      -0.601922 (?7=,A7^  
      4     0.18154684    -0.36248550 oLT#'42+H  
Change in Focus                :       0.920681 1 :p'  
      5     0.28665820    -0.25737414 >v.fH6P,}  
Change in Focus                :       1.253875 wtY)(ka  
      6     0.21263372    -0.33139862 tQ|c.`)W  
Change in Focus                :      -0.903878 N3n]  
      7     0.40051424    -0.14351809 i/x |c!E  
Change in Focus                :      -1.354815 ^ `y7JXI:  
      8     0.48754161    -0.05649072 4XjwU`  
Change in Focus                :       0.215922 .h-mFcjy  
      9     0.40357468    -0.14045766 ^l!SIu  
Change in Focus                :       0.281783 4>*=q*<V5E  
     10     0.26315315    -0.28087919 4v\HaOk  
Change in Focus                :      -1.048393 gyw=1q+  
     11     0.26120585    -0.28282649 eiKY az  
Change in Focus                :       1.017611 j
=l2\W#}  
     12     0.24033815    -0.30369419 Vp/XVyL}R  
Change in Focus                :      -0.109292 3^7+fxYWo  
     13     0.37164046    -0.17239188 z1J)./BO  
Change in Focus                :      -0.692430 q]?qeF[  
     14     0.48597489    -0.05805744 4X+xh|R:U  
Change in Focus                :      -0.662040 atTR6%!6  
     15     0.21462327    -0.32940907 "cKD#  
Change in Focus                :       1.611296 8RMM97@1Q  
     16     0.43378226    -0.11025008 r%U6,7d=)  
Change in Focus                :      -0.640081 0;bdwIP3
 
     17     0.39321881    -0.15081353 }dkXRce*  
Change in Focus                :       0.914906 )p\`H;7*V4  
     18     0.20692530    -0.33710703 YEu+kBlcQ  
Change in Focus                :       0.801607 fsL9d}  
     19     0.51374068    -0.03029165 q/EX`%U  
Change in Focus                :       0.947293 jY=y<R_oK  
     20     0.38013374    -0.16389860 /wJ#-DZ  
Change in Focus                :       0.667010 //63|;EEkl  
(47?lw &  
Number of traceable Monte Carlo files generated: 20 w}3N!jNDv  
D6bYg `  
Nominal     0.54403234 1#d
2 +J*  
Best        0.54384387    Trial     2 \S;[7T  
Worst       0.18154684    Trial     4 ]}L'jK 0  
Mean        0.35770970 cGlN*GJ*H  
Std Dev     0.11156454 ##jJaSxG  
,Cr%2Wg-  
Q
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Compensator Statistics: /8l-@P.o  
Change in back focus: "'v+*H 3  
Minimum            :        -1.354815 Lf9hOMHx  
Maximum            :         1.611296 f;'*((  
Mean               :         0.161872 |Hf|N$  
Standard Deviation :         0.869664 z*},N$2=  
YiZk|K_  
90% >       0.20977951               nah?V" ?Y  
80% >       0.22748071               p/Ul[7A4e  
50% >       0.38667627               @aS)=|Ls\  
20% >       0.46553746               1V2]@VQF  
10% >       0.50064115                M(C">L]8  
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End of Run. %6Gg&Y$j!  
38w^="-T  
这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 p-s\D_
 

图片:3.JPG

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是大于0.6左右的，难道我按照这个默认的公差来加工的话，只有10%的才可能大于0.5？那太低了啊，请问这该怎么进行进一步处理。或者之前哪有问题 T~3{$  
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不吝赐教

我又试了试，原来是得根据上面的结果不断修改公差，放松或者变紧，然后在做公差分析，不断提高蒙特卡罗的结果。但是比如就拿我这个来说，理想是达到30lp处>0.6，那么实际做蒙特卡罗公差分析时，百分之多少以上的MTF是合格的呢？

90% >       0.20977951                 n#6{K6}k~  
80% >       0.22748071                 Movm1*&=  
50% >       0.38667627                 Z}t;:yhR  
20% >       0.46553746                 ow'G&<0b  
10% >       0.50064115 )n)AmNpq   
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最后这个数值是MTF值呢，还是MTF的公差？ |mKohV qr  
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也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   t*= nI $  
oJD]h/fQs  
怎么没人啊，大家讨论讨论吗

没有人啊？？？

引用第2楼sansummer于2011-06-22 08:56发表的  : %\,9S`0  
90% >       0.20977951                 Q*I8RAfd  
80% >       0.22748071                 T8Mqu`$r  
50% >       0.38667627                 #<==7X#  
20% >       0.46553746                 Bk3\NPa  
10% >       0.50064115 7'esJ)2  
....... bwhH2^ !  

'WhJ}Uo
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al}J^MJ  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   MZ$uWm`/  
Mode                : Sensitivities {aUTTEu  
Sampling            : 2 ^D+^~>f  
Nominal Criterion   : 0.54403234 =MQ/z#:-P  
Test Wavelength     : 0.6328 T4wk$R L  
% Q6 za'25  
波长632.8nm 时 mtf 是 0.54403234  没达到0.6

谢谢。您说的“波长632.8nm 时 mtf 是 0.54403234  没达到0.6”这是一个评价标准吧？ *p $0(bz  
~i;{+j6Ho!  
这个评价标准和我理想的设计结果的0.6有什么联系吗，另外这个 0.54403234  是这么来的？

你试试把原来的系统波长改成632.8nm，看看Geometric MTF    30 per mm 的mtf值是不是0.54403234

啊...这倒也是。换了波长的确可能有所变化。另外还有就是如果现在百分比太低，我是否应该考虑把最敏感的公差再紧一些，就会好了？

恩，多多尝试