[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 Ab/JCZNn  
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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 *c=vEQn-  
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图片:2.jpg

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然后运行分析的结果如下： `{h)-Y``  
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Analysis of Tolerances 9kF0H a}J  
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File : E:\光学设计资料\zemax练习\f500.ZMX L[D+=  
Title: P7,g^:$  
Date : TUE JUN 21 2011 "M-';;  
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Units are Millimeters. 3imsIBr  
All changes are computed using linear differences. Ai[@2AyU  
-ZSN0Xk  
Paraxial Focus compensation only. Hd\oV^>  
jVN06,3z  
WARNING: Solves should be removed prior to tolerancing. ]dJ"_  
Z : xb8]y  
Mnemonics: G rU`;M"  
TFRN: Tolerance on curvature in fringes. Fp@>(M#3  
TTHI: Tolerance on thickness. Wu|MNB?M  
TSDX: Tolerance on surface decentering in x. Sa9VwVUE  
TSDY: Tolerance on surface decentering in y. w}OBp^V^  
TSTX: Tolerance on surface tilt in x (degrees). l5VRdZ4Uf  
TSTY: Tolerance on surface tilt in y (degrees). $H)!h^7^9  
TIRR: Tolerance on irregularity (fringes). dm=?o  
TIND: Tolerance on Nd index of refraction. uQx/o^  
TEDX: Tolerance on element decentering in x. S ;rd0+J  
TEDY: Tolerance on element decentering in y. Nj2l>[L;  
TETX: Tolerance on element tilt in x (degrees). =fnBE`Uc  
TETY: Tolerance on element tilt in y (degrees). <dD!_S6@,  
r5nHYV&7  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. nr -< mQ  

6.
KEe^[-  
WARNING: Boundary constraints on compensators will be ignored.
TB.>?*<n]  
'/03m\7  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm #;^UW  
Mode                : Sensitivities 3~3tjhw;]9  
Sampling            : 2 ;Bz|hB{  
Nominal Criterion   : 0.54403234 m3pDFI  
Test Wavelength     : 0.6328 fi*b]a\'  
pKq[F*Lut  
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Fields: XY Symmetric Angle in degrees &uO-h
 
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY >FOCdlJ#  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 K`9~#Zx$  
k]r4b`x`  
Sensitivity Analysis: .(cpYKFX  
U*Y]cohh  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| e<1Ewml(]  
Type                      Value      Criterion        Change          Value      Criterion        Change uyk;]EYjHZ  
Fringe tolerance on surface 1 9XDSL[[  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 gM;m{gXYK  
Change in Focus                :      -0.000000                            0.000000 H9ES|ZJs  
Fringe tolerance on surface 2 bK0(c1*a[e  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 3'0
vLi  
Change in Focus                :       0.000000                            0.000000 :*]#n  
Fringe tolerance on surface 3 j?|V
x'  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 j][&o-Ev  
Change in Focus                :      -0.000000                            0.000000 )mwwceN  
Thickness tolerance on surface 1 1irSI,j%z  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Yu)GV7\2  
Change in Focus                :       0.000000                            0.000000 P,)D0i  
Thickness tolerance on surface 2 G,?a8(  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 :ZB.I(v  
Change in Focus                :       0.000000                           -0.000000 %regt{  
Decenter X tolerance on surfaces 1 through 3 %RtL4"M2j  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ."BXA8c;A  
Change in Focus                :       0.000000                            0.000000 srN7  
Decenter Y tolerance on surfaces 1 through 3 +<p&Va#  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 +VW8{=$  
Change in Focus                :       0.000000                            0.000000 O-UA2?N@j  
Tilt X tolerance on surfaces 1 through 3 (degrees) t(roj@!x_o  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 )=K8mt0qob  
Change in Focus                :       0.000000                            0.000000 1DAU*^-  
Tilt Y tolerance on surfaces 1 through 3 (degrees) Q) aZ0 Pt  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Ieq_XF]U  
Change in Focus                :       0.000000                            0.000000 &XcPHZy'  
Decenter X tolerance on surface 1 Qu'#~#L`  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 kBC$dW-  
Change in Focus                :       0.000000                            0.000000 l\AdL$$Mb  
Decenter Y tolerance on surface 1 9RJ#zUK  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ,GVX1B?  
Change in Focus                :       0.000000                            0.000000 6U8esPs,  
Tilt X tolerance on surface (degrees) 1 m5N,
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TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Pb T2- F_  
Change in Focus                :       0.000000                            0.000000 1U/9=b  
Tilt Y tolerance on surface (degrees) 1 :PN%'~}n  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 s Y1@~v  
Change in Focus                :       0.000000                            0.000000 [c1Gq)ht  
Decenter X tolerance on surface 2 yZp/P%y  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 )ej1)RU"  
Change in Focus                :       0.000000                            0.000000 .J @mpJdY  
Decenter Y tolerance on surface 2 7w9'xY  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 .K4)#oC  
Change in Focus                :       0.000000                            0.000000 sDg1nKw(  
Tilt X tolerance on surface (degrees) 2 EMr|#}]#s  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 tpA-IL?KQw  
Change in Focus                :       0.000000                            0.000000 1QmOUw}yj  
Tilt Y tolerance on surface (degrees) 2 =EYgck;)  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 a)r["*bTx  
Change in Focus                :       0.000000                            0.000000 9@"pR;X@  
Decenter X tolerance on surface 3 BH}Cx[n?~  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 J^#g?RHN>m  
Change in Focus                :       0.000000                            0.000000
(m!kg  
Decenter Y tolerance on surface 3 5 S
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TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 1I'Q{X&B  
Change in Focus                :       0.000000                            0.000000 ;! ?l8R  
Tilt X tolerance on surface (degrees) 3 Y$,~"$su|  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 >JA-G@3i  
Change in Focus                :       0.000000                            0.000000 ~e,l2 <  
Tilt Y tolerance on surface (degrees) 3 Z5U\>7@&8  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Zi]E!Tgn  
Change in Focus                :       0.000000                            0.000000 5cA:;{z];g  
Irregularity of surface 1 in fringes K5`*Y@  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 tXrKC  
Change in Focus                :       0.000000                            0.000000 Z6Mjc/  
Irregularity of surface 2 in fringes E6xdPjoWy  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 =c,7uB  
Change in Focus                :       0.000000                            0.000000 n;=FD;}j+  
Irregularity of surface 3 in fringes T3=h7a %=  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 vc3r [mT  
Change in Focus                :       0.000000                            0.000000 FhBV.,bU,m  
Index tolerance on surface 1 ,:K{  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 5Zhl@v,L%  
Change in Focus                :       0.000000                            0.000000 eTgtt-;VR  
Index tolerance on surface 2 |[#Qk 4Ttf  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 &|'yqzS3  
Change in Focus                :       0.000000                           -0.000000 e#}Fm;|d  
m0.g}N-w  
Worst offenders: eG2'W  
Type                      Value      Criterion        Change fXnewPr=#  
TSTY   2            -0.20000000     0.35349910    -0.19053324 WZ!zUUp}V  
TSTY   2             0.20000000     0.35349910    -0.19053324 54WX#/<Yik  
TSTX   2            -0.20000000     0.35349910    -0.19053324 +]wM$
bP  
TSTX   2             0.20000000     0.35349910    -0.19053324 jFKp~`/#  
TSTY   1            -0.20000000     0.42678383    -0.11724851 Jh%SenP_oP  
TSTY   1             0.20000000     0.42678383    -0.11724851 /!>OWh*~  
TSTX   1            -0.20000000     0.42678383    -0.11724851 cotySio$  
TSTX   1             0.20000000     0.42678383    -0.11724851 Bnwq!i!M  
TSTY   3            -0.20000000     0.42861670    -0.11541563 /4 Kd
  
TSTY   3             0.20000000     0.42861670    -0.11541563 *a8<cf  
/|&4&$  
Estimated Performance Changes based upon Root-Sum-Square method: !^NZ
p%Yd  
Nominal MTF                 :     0.54403234 hCgk78O?  
Estimated change            :    -0.36299231 t(6i4c>  
Estimated MTF               :     0.18104003 6~{'\Z  
@aFk|.6  
Compensator Statistics: 47{5{/B-  
Change in back focus: &'Nzw2  
Minimum            :        -0.000000 rqBoUS4  
Maximum            :         0.000000 EAWBgOO8iC  
Mean               :        -0.000000 &ZFHWI(P
 
Standard Deviation :         0.000000 !or_CJ8%  
%c]N-  
Monte Carlo Analysis: PC255  
Number of trials: 20 e87a9ZPm  
S{MB$JA  
Initial Statistics: Normal Distribution "u$XEA  
u+6D|  
  Trial       Criterion        Change up8d3  
      1     0.42804416    -0.11598818 2g_mQT  
Change in Focus                :      -0.400171 X$Q.A^9  
      2     0.54384387    -0.00018847 726UO#*  
Change in Focus                :       1.018470 Q;q{1M>  
      3     0.44510003    -0.09893230 "dOQ)<;  
Change in Focus                :      -0.601922 gOah5*Lj  
      4     0.18154684    -0.36248550 aD_7^
8>  
Change in Focus                :       0.920681 ucU7 @j  
      5     0.28665820    -0.25737414 }_^ vvu  
Change in Focus                :       1.253875 Q&^\YgkCf  
      6     0.21263372    -0.33139862 h%4UeL &F  
Change in Focus                :      -0.903878 >Q[ Z{  
      7     0.40051424    -0.14351809 MEp{&#v|1  
Change in Focus                :      -1.354815 e+4Eiv  
      8     0.48754161    -0.05649072 imAOYEH7}  
Change in Focus                :       0.215922 Ck"db30.  
      9     0.40357468    -0.14045766 C+5X8  
Change in Focus                :       0.281783 WXDo`_{R  
     10     0.26315315    -0.28087919 suGd&eP|  
Change in Focus                :      -1.048393 <8Nr;96
IA  
     11     0.26120585    -0.28282649 Em5,Zr_  
Change in Focus                :       1.017611 ]+B.=mO_  
     12     0.24033815    -0.30369419 E'(nJ  
Change in Focus                :      -0.109292 khD)x0'b  
     13     0.37164046    -0.17239188 SBDGms  
Change in Focus                :      -0.692430 #Er"i  
     14     0.48597489    -0.05805744 8c_X`0jy  
Change in Focus                :      -0.662040 3G2iRr.o  
     15     0.21462327    -0.32940907 ^Qn:#O9  
Change in Focus                :       1.611296 #M+_Lk3  
     16     0.43378226    -0.11025008 Fav++z  
Change in Focus                :      -0.640081 ,Oy$q~.  
     17     0.39321881    -0.15081353 J2! Q09 }5  
Change in Focus                :       0.914906 ;FF+uK  
     18     0.20692530    -0.33710703 s8P3H|0.-  
Change in Focus                :       0.801607 1,M
m+_)B  
     19     0.51374068    -0.03029165 2k^rZ^^"  
Change in Focus                :       0.947293 iF
837ng5  
     20     0.38013374    -0.16389860 M+HhTW;I=  
Change in Focus                :       0.667010 ,9_O4O%  
kS9;Tjcx  
Number of traceable Monte Carlo files generated: 20 z9g6%RbwX  
)Ho"b  
Nominal     0.54403234 4dLnX3 v  
Best        0.54384387    Trial     2 M6^ \LtFt  
Worst       0.18154684    Trial     4 ]FIIs58IM  
Mean        0.35770970 K9p<PL
y+  
Std Dev     0.11156454 NqNU:_}  
)cZHBG.0H  
D_~;!^  
Compensator Statistics: N}ND()bf  
Change in back focus: $e--"@[Y  
Minimum            :        -1.354815 /~f[>#  
Maximum            :         1.611296 Z~8%bfpe  
Mean               :         0.161872 w\eC{,00:  
Standard Deviation :         0.869664 oSkQ/5hg.  
r `n|fD.  
90% >       0.20977951               -o`K/f}d  
80% >       0.22748071               u~Po5W/i  
50% >       0.38667627               [6JDS;MIN  
20% >       0.46553746               [)GRP  
10% >       0.50064115                y%61xA`#  
D M+MBK  
End of Run. e!gNd>b {  
r^<,f[yH  
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 SG|AJ9  

图片:3.JPG

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:l!sKT?:d!  
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 k3@d =k  
2y!aXk\#C  
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                 Cy6!?Mik  
80% >       0.22748071                 mHju$d  
50% >       0.38667627                 %#v$d  
20% >       0.46553746                 &ZC{ _t  
10% >       0.50064115 #TR!x,Hc  
BF gxa#De  
最后这个数值是MTF值呢，还是MTF的公差？ sfw*_}y  
$poIWJMc  
也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   ciml:"nQ  
.$x}~Sw  
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  : lc5(^~  
90% >       0.20977951                 ~gZ1*8s`  
80% >       0.22748071                 UIf#Gy
|l  
50% >       0.38667627                 <eSg%6z  
20% >       0.46553746                 =d5;F`m  
10% >       0.50064115 !+@70|gFF  
....... ?F[_5ls|]  

<`vXyPA6  
|*zgX]-+;  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   &I'J4gk[  
Mode                : Sensitivities _/P;`
@  
Sampling            : 2 & }j;SK5  
Nominal Criterion   : 0.54403234 J7{D6@yLS  
Test Wavelength     : 0.6328 A~>B?Wijqg  
"-Nyf  
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？ ZWuNl!l>  

X5+^b({  
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