[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 ,IhQ%)l  
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然后添加了默认公差分析，基本没变 ^JxVs 7  
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然后运行分析的结果如下： O_ r-(wE4  
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Analysis of Tolerances oTvg%bX  
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File : E:\光学设计资料\zemax练习\f500.ZMX Gu{1%bb#kL  
Title: lFuW8G,-f@  
Date : TUE JUN 21 2011 yE N3/-S+  
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Units are Millimeters. jA^yUd-  
All changes are computed using linear differences. vV"YgN:  
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Paraxial Focus compensation only. E<LH-_$  
+mG"m hF  
WARNING: Solves should be removed prior to tolerancing. .
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J_+2]X7n  
Mnemonics: \=RV?mI3?  
TFRN: Tolerance on curvature in fringes. >Ch2Ep  
TTHI: Tolerance on thickness. a:P+HU:  
TSDX: Tolerance on surface decentering in x. N\ <riS9  
TSDY: Tolerance on surface decentering in y. 6-$95.Y2  
TSTX: Tolerance on surface tilt in x (degrees). '~yxu$aK  
TSTY: Tolerance on surface tilt in y (degrees). }cUO+)!Y  
TIRR: Tolerance on irregularity (fringes). 
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TIND: Tolerance on Nd index of refraction. N\s-{7K  
TEDX: Tolerance on element decentering in x. DCa=o  
TEDY: Tolerance on element decentering in y. ^VzhjKSu  
TETX: Tolerance on element tilt in x (degrees). CNV^,`FX  
TETY: Tolerance on element tilt in y (degrees).  ~9YEb  
rLeQBp'  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. zBca$Vp  
V9KRA 1  
WARNING: Boundary constraints on compensators will be ignored. e2%mD.I  
Md9y:)P@Y  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 8fQfu'LyjY  
Mode                : Sensitivities @(6P L^I  
Sampling            : 2 p1GP@m,^n0  
Nominal Criterion   : 0.54403234 >t9
DI  
Test Wavelength     : 0.6328 ?Z!R  
Le-t<6i-V#  
:V6t5I'_  
Fields: XY Symmetric Angle in degrees 7<:o4\q?m  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY !F?j'[s8]  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000  ^0{
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Sensitivity Analysis: ME>Sh~C\  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| |BtFT  
Type                      Value      Criterion        Change          Value      Criterion        Change %IIFLl
D  
Fringe tolerance on surface 1 LGtw4'yr  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 g^:`
h VV  
Change in Focus                :      -0.000000                            0.000000 s,mt%^
x[  
Fringe tolerance on surface 2 1uyd+*/(xP  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 4K~>  
Change in Focus                :       0.000000                            0.000000 |A
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Fringe tolerance on surface 3 ^!O!HMX0  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 o*~=NoR  
Change in Focus                :      -0.000000                            0.000000 tJ7tZ~Ak  
Thickness tolerance on surface 1 $Ups9pQ  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 r~|7paX!  
Change in Focus                :       0.000000                            0.000000 $WRRCB/A6  
Thickness tolerance on surface 2 /A>nsN?:]  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 hZ|0<u  
Change in Focus                :       0.000000                           -0.000000 [Tvdchl OC  
Decenter X tolerance on surfaces 1 through 3 71IM`eL=ED  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 >,Zn~8&Z  
Change in Focus                :       0.000000                            0.000000 c<Ud[x.  
Decenter Y tolerance on surfaces 1 through 3 >`yRL[c;  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ([SJ6ff]&  
Change in Focus                :       0.000000                            0.000000 i}f"'KW  
Tilt X tolerance on surfaces 1 through 3 (degrees) ;i [;%  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Fo0s<YlS-  
Change in Focus                :       0.000000                            0.000000 ww+,GnV  
Tilt Y tolerance on surfaces 1 through 3 (degrees) M`9|8f,!a  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ZBH^
0  
Change in Focus                :       0.000000                            0.000000 m.gv
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Decenter X tolerance on surface 1 5+b73R3r  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 0a!|*Z  
Change in Focus                :       0.000000                            0.000000 BEAY}P(y3  
Decenter Y tolerance on surface 1 T`u ,!S
 
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 |NTqJ j  
Change in Focus                :       0.000000                            0.000000 wZ`*C mr  
Tilt X tolerance on surface (degrees) 1 }Q^*Zq9-  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 w}97`.Kt!n  
Change in Focus                :       0.000000                            0.000000 DHvZ:)aT}  
Tilt Y tolerance on surface (degrees) 1 ?oV|.LM:W  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 5]kv1nQ  
Change in Focus                :       0.000000                            0.000000 (_N(K`4#W  
Decenter X tolerance on surface 2 {g4w[F!77  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 $&jVEMia  
Change in Focus                :       0.000000                            0.000000 qd'Z|'j  
Decenter Y tolerance on surface 2 (BK_A{5  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 #g2&x sU  
Change in Focus                :       0.000000                            0.000000 _$8:\[J  
Tilt X tolerance on surface (degrees) 2 qJ~fEX  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 |WT]s B0Eq  
Change in Focus                :       0.000000                            0.000000 m*lcIa  
Tilt Y tolerance on surface (degrees) 2 tu;Pm4q7  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 zW`a]n.  
Change in Focus                :       0.000000                            0.000000 iJKGzHvS  
Decenter X tolerance on surface 3 Nn?$}
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TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 yKz%-6cpSl  
Change in Focus                :       0.000000                            0.000000 ,sg\K>H=  
Decenter Y tolerance on surface 3 V8pZr+AJ  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195  Oe "%v;-  
Change in Focus                :       0.000000                            0.000000 9.9B#?  
Tilt X tolerance on surface (degrees) 3 :/"5x  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 S C}@eA'  
Change in Focus                :       0.000000                            0.000000 hdmKD0  
Tilt Y tolerance on surface (degrees) 3 (bB"6 #TI  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 v@J[qpX  
Change in Focus                :       0.000000                            0.000000 i{Du6j^j  
Irregularity of surface 1 in fringes ,.|/B^jV  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 R`Hy0;X  
Change in Focus                :       0.000000                            0.000000 Uaj_,qb(  
Irregularity of surface 2 in fringes h$6~3^g:P  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Czy}~;_Ay  
Change in Focus                :       0.000000                            0.000000 gr@Ril^  
Irregularity of surface 3 in fringes 50T^V`6  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 `9T5Dem|#  
Change in Focus                :       0.000000                            0.000000 /wP2Wnq$  
Index tolerance on surface 1 & Yx12B\  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 `UqX`MFz  
Change in Focus                :       0.000000                            0.000000 [1z.JfC :S  
Index tolerance on surface 2 wAL}c(EHO  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 L gy^^.  
Change in Focus                :       0.000000                           -0.000000 zXbA$c  
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Worst offenders: NQvI=R-g  
Type                      Value      Criterion        Change RU>qj *e  
TSTY   2            -0.20000000     0.35349910    -0.19053324 !*?9n^PaF  
TSTY   2             0.20000000     0.35349910    -0.19053324 5
9+KOQul6  
TSTX   2            -0.20000000     0.35349910    -0.19053324 N8J(RR9O  
TSTX   2             0.20000000     0.35349910    -0.19053324 h b8L[ 4  
TSTY   1            -0.20000000     0.42678383    -0.11724851 uW!saT5o  
TSTY   1             0.20000000     0.42678383    -0.11724851 i1bmUKZ8'L  
TSTX   1            -0.20000000     0.42678383    -0.11724851 *O_^C  
TSTX   1             0.20000000     0.42678383    -0.11724851 Jz P0D'  
TSTY   3            -0.20000000     0.42861670    -0.11541563 )V_;]9<wt  
TSTY   3             0.20000000     0.42861670    -0.11541563 _,d<9 Y)  
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Estimated Performance Changes based upon Root-Sum-Square method: \F""G,AWq{  
Nominal MTF                 :     0.54403234 o-;/x)  
Estimated change            :    -0.36299231 64>CfU(  
Estimated MTF               :     0.18104003 Sn' +~6i  
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Compensator Statistics: 33&\E- Q>  
Change in back focus: i` ay9J8N  
Minimum            :        -0.000000 Y4_xV&  
Maximum            :         0.000000 <z>oY2%  
Mean               :        -0.000000 ZNL+w4  
Standard Deviation :         0.000000 (Fq:G
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Monte Carlo Analysis: #l7v|)9v  
Number of trials: 20 S_;r!.
  
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Initial Statistics: Normal Distribution Ki&a"Fu3  
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  Trial       Criterion        Change Ps[#z@5{x  
      1     0.42804416    -0.11598818 DQaE9gmC  
Change in Focus                :      -0.400171 DVJn;X^T:  
      2     0.54384387    -0.00018847 XP?)xDr8  
Change in Focus                :       1.018470 Z_Y'#5o#  
      3     0.44510003    -0.09893230 \<G"9w  
Change in Focus                :      -0.601922 PrA(==FX/  
      4     0.18154684    -0.36248550 0'YJczDq:7  
Change in Focus                :       0.920681 5K)_w:U X  
      5     0.28665820    -0.25737414 ou<,c?nNM  
Change in Focus                :       1.253875 4??LK/s*  
      6     0.21263372    -0.33139862 U=U5EdN;  
Change in Focus                :      -0.903878 yf4L0.  
      7     0.40051424    -0.14351809 %/5Wj_|p  
Change in Focus                :      -1.354815 pVrY';[,|  
      8     0.48754161    -0.05649072 WIpV'F|t]`  
Change in Focus                :       0.215922 XD't)B(q  
      9     0.40357468    -0.14045766 m7u`r(&  
Change in Focus                :       0.281783 nj0]c`6rN@  
     10     0.26315315    -0.28087919 Re %dNxJ=  
Change in Focus                :      -1.048393 D!.1R!(Z  
     11     0.26120585    -0.28282649 a(D=ZKbVU  
Change in Focus                :       1.017611 o P;6i  
     12     0.24033815    -0.30369419 {8`$~c  
Change in Focus                :      -0.109292 >}W[>WReI  
     13     0.37164046    -0.17239188 9cU9'r# h  
Change in Focus                :      -0.692430
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     14     0.48597489    -0.05805744 As`=K$^Il.  
Change in Focus                :      -0.662040 @qj]`}Gx'  
     15     0.21462327    -0.32940907 7mM
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Change in Focus                :       1.611296 Jmi,;Af'/  
     16     0.43378226    -0.11025008 !\9^|Ef?  
Change in Focus                :      -0.640081 X J)Y-7c  
     17     0.39321881    -0.15081353 \g h |G  
Change in Focus                :       0.914906 x;\/Xj;  
     18     0.20692530    -0.33710703 ={V@Y-5T  
Change in Focus                :       0.801607 Ki7t?4YE  
     19     0.51374068    -0.03029165  (/,l0  
Change in Focus                :       0.947293 slUi)@b  
     20     0.38013374    -0.16389860 ( }Bb=~  
Change in Focus                :       0.667010 wJCw6&D,/  
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Number of traceable Monte Carlo files generated: 20 7v)
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4KnBb_w  
Nominal     0.54403234 79exZ7|  
Best        0.54384387    Trial     2 Jp+'"a  
Worst       0.18154684    Trial     4 +A)> zx  
Mean        0.35770970 ?+.C@_QZQ  
Std Dev     0.11156454 y_=y%  
2A[hMbL  
LdN[N^n[H  
Compensator Statistics: lv'W
RS'}  
Change in back focus: <r
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Minimum            :        -1.354815 !2l2;?jM  
Maximum            :         1.611296 V K 7  
Mean               :         0.161872 @z{SDM  
Standard Deviation :         0.869664 ]a4+]vLK  
k
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90% >       0.20977951               ^-[ I;P  
80% >       0.22748071               RLB"}&SF]  
50% >       0.38667627               "QxULiw  
20% >       0.46553746               !$oa6*<1  
10% >       0.50064115                dnU-v7k,{  
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End of Run. 3IlVSR^py  
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这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 k4{|Xn  
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是大于0.6左右的，难道我按照这个默认的公差来加工的话，只有10%的才可能大于0.5？那太低了啊，请问这该怎么进行进一步处理。或者之前哪有问题 x5BS|3W$a  
h-?yed*?  
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                 >,]a>V  
80% >       0.22748071                 A'z]?xQR  
50% >       0.38667627                 c-XO}\?  
20% >       0.46553746                 *pa hZiO  
10% >       0.50064115 Uq#2~0n>  
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最后这个数值是MTF值呢，还是MTF的公差？ M*gvYo  
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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？？？   |nx3x  
w)+1^eW  
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  : ' J@J$#6  
90% >       0.20977951                 n3~axRPO  
80% >       0.22748071                 ~_EDJp1J  
50% >       0.38667627                 }X{rE|@  
20% >       0.46553746                 Q")Xg:  
10% >       0.50064115 :%sBY0 yF  
....... p
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这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   ;iiCay37F  
Mode                : Sensitivities ir}z^+  
Sampling            : 2 [>
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Nominal Criterion   : 0.54403234 l-%]f]>  
Test Wavelength     : 0.6328 y-E'Y=j  
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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？ k( 0;>)<i  
n8Qv8  
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