[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 ~AxA ,  
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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 7jT]J  
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图片:2.jpg

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然后运行分析的结果如下： '5.n28W>  
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Analysis of Tolerances eKNZ?!c=  
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File : E:\光学设计资料\zemax练习\f500.ZMX R>U0W{1NO  
Title: 7OX5"u!2  
Date : TUE JUN 21 2011 =4uL1[0'  
uyMxBc%6  
Units are Millimeters. = ;#?CAa:  
All changes are computed using linear differences. {^2``NYM_  
NL 3ri7n  
Paraxial Focus compensation only. 1X2MhV  
0gw0  
WARNING: Solves should be removed prior to tolerancing. ED&>~~k)  
R!b<Sg  
Mnemonics: P:vAU8d>  
TFRN: Tolerance on curvature in fringes. U|.kAI*  
TTHI: Tolerance on thickness. 1=gE,k5H  
TSDX: Tolerance on surface decentering in x. Z .VIb|  
TSDY: Tolerance on surface decentering in y. hdt;_qa  
TSTX: Tolerance on surface tilt in x (degrees). 5xe}ljo  
TSTY: Tolerance on surface tilt in y (degrees). {J;[
Hf5  
TIRR: Tolerance on irregularity (fringes). o^FlQy\  
TIND: Tolerance on Nd index of refraction. UZ7Zzc#g  
TEDX: Tolerance on element decentering in x. ;+] mcgN!  
TEDY: Tolerance on element decentering in y. b{J
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TETX: Tolerance on element tilt in x (degrees). {Qbg'|HO=l  
TETY: Tolerance on element tilt in y (degrees). N,fEta6  
K8M[xaI@  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. (~ro_WC/I  
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WARNING: Boundary constraints on compensators will be ignored. =REMSej  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm +.^BM/z^O  
Mode                : Sensitivities ieuq9ah#  
Sampling            : 2 MJ"ug8N  
Nominal Criterion   : 0.54403234 >tc#Ofgzd  
Test Wavelength     : 0.6328 &$$KC?!w  
$Y'}wB{pc  
 %f3qCN  
Fields: XY Symmetric Angle in degrees sZ,xbfZby  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY S&(MR%".  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 z OwKh>]  
KA~eOEjM  
Sensitivity Analysis: ^#-d^ )f;  
96G8B62  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| {3,_i66  
Type                      Value      Criterion        Change          Value      Criterion        Change /`6Y-8e2  
Fringe tolerance on surface 1 0F48T<i  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 Yf1&"WW4  
Change in Focus                :      -0.000000                            0.000000 YA+jLy6ZL  
Fringe tolerance on surface 2 T0HNld  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230  Y7*8A,  
Change in Focus                :       0.000000                            0.000000 Uk1|y\  
Fringe tolerance on surface 3 2Xw=kwu  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Q[PVkZ  
Change in Focus                :      -0.000000                            0.000000 9j94]w2v  
Thickness tolerance on surface 1 |)TI&T;k  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 3{:AG,G  
Change in Focus                :       0.000000                            0.000000 b@v_db]|t.  
Thickness tolerance on surface 2 ujin+;1  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 a7Mn/ i.  
Change in Focus                :       0.000000                           -0.000000 q\DN8IJ  
Decenter X tolerance on surfaces 1 through 3 nj1T
X  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 nu(;yIRP  
Change in Focus                :       0.000000                            0.000000 ^uiQZ%;  
Decenter Y tolerance on surfaces 1 through 3 X&LaAqlSG  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 o}4~CN9}  
Change in Focus                :       0.000000                            0.000000 gPE`mE  
Tilt X tolerance on surfaces 1 through 3 (degrees) kJ'rtz4QO  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 #zf,%IYF  
Change in Focus                :       0.000000                            0.000000 z@<OR$/`L  
Tilt Y tolerance on surfaces 1 through 3 (degrees) 8
NZQTRdH  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ApD`i+Y@  
Change in Focus                :       0.000000                            0.000000 OH >#f6`[  
Decenter X tolerance on surface 1 WqO4_;X6/  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 H*H~~yQ  
Change in Focus                :       0.000000                            0.000000 {{r.?m#{  
Decenter Y tolerance on surface 1 @fQvAok  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 {Mpx33  
Change in Focus                :       0.000000                            0.000000 ^7Rc\  
Tilt X tolerance on surface (degrees) 1 ZX8AB  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Q2>o+G  
Change in Focus                :       0.000000                            0.000000 .fgVzDR|+  
Tilt Y tolerance on surface (degrees) 1 nYnBWDnV  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 aizJ&7(>  
Change in Focus                :       0.000000                            0.000000 |yinVfZ0C  
Decenter X tolerance on surface 2 @tIY%;Bgk  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 |SfCuV#g/<  
Change in Focus                :       0.000000                            0.000000 %a:>3! +  
Decenter Y tolerance on surface 2 LO;?#e7  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Ya&\b 6  
Change in Focus                :       0.000000                            0.000000 5S*aZ1t18  
Tilt X tolerance on surface (degrees) 2 msVi3`q~  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 t2(vtxrt  
Change in Focus                :       0.000000                            0.000000 `]=0oDG:1!  
Tilt Y tolerance on surface (degrees) 2 }60/5HNr  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 iN9G`qF3!Q  
Change in Focus                :       0.000000                            0.000000 3wMnTT"At  
Decenter X tolerance on surface 3 7NRm\%^q  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 [(2XL"4D  
Change in Focus                :       0.000000                            0.000000 %i.Prckrb  
Decenter Y tolerance on surface 3 <Gna}ALkg  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Gl%N}8Cim  
Change in Focus                :       0.000000                            0.000000 xErAs}|  
Tilt X tolerance on surface (degrees) 3 w$Z%RF'p  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 >9NC2%61S  
Change in Focus                :       0.000000                            0.000000 h=4 GSU  
Tilt Y tolerance on surface (degrees) 3 iwy;9x  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 :'FCeS9  
Change in Focus                :       0.000000                            0.000000 7h.fT`  
Irregularity of surface 1 in fringes g2?yT ?  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 [1mEdtqf*  
Change in Focus                :       0.000000                            0.000000 6ZAZJn|  
Irregularity of surface 2 in fringes ,n2"N5{jw  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 uvAJJIae'  
Change in Focus                :       0.000000                            0.000000 #-o 'g!  
Irregularity of surface 3 in fringes pqTaN=R8  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 91-[[<  
Change in Focus                :       0.000000                            0.000000 1aZGt2;  
Index tolerance on surface 1 1xr2x;  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 6a<zZO`Z6+  
Change in Focus                :       0.000000                            0.000000 >?#zPweA  
Index tolerance on surface 2 qi ">AQpp  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Z6-ZAS(>m  
Change in Focus                :       0.000000                           -0.000000 S503b*pM  
NTEN
 
Worst offenders: lwz\"8  
Type                      Value      Criterion        Change =kf"%vFV  
TSTY   2            -0.20000000     0.35349910    -0.19053324 2liJ^ `  
TSTY   2             0.20000000     0.35349910    -0.19053324 (AX$Svw  
TSTX   2            -0.20000000     0.35349910    -0.19053324 !
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TSTX   2             0.20000000     0.35349910    -0.19053324 WEJ-K<A(  
TSTY   1            -0.20000000     0.42678383    -0.11724851 V/:
2xT  
TSTY   1             0.20000000     0.42678383    -0.11724851 xQ2:tY#?  
TSTX   1            -0.20000000     0.42678383    -0.11724851
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TSTX   1             0.20000000     0.42678383    -0.11724851 K- $,:28  
TSTY   3            -0.20000000     0.42861670    -0.11541563 i"=lxqWeaV  
TSTY   3             0.20000000     0.42861670    -0.11541563 3Fxr=  
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Estimated Performance Changes based upon Root-Sum-Square method: }'faf{W  
Nominal MTF                 :     0.54403234 (,tu7u{  
Estimated change            :    -0.36299231 NuOxEyC  
Estimated MTF               :     0.18104003 *G7cF  
HTv#2WX  
Compensator Statistics: Fi;H  
Change in back focus: 'n ^,lXWB  
Minimum            :        -0.000000 ,p OGT71  
Maximum            :         0.000000 5&h">_j  
Mean               :        -0.000000 D
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Standard Deviation :         0.000000 | oK9o6m4  
ggiy{CdR  
Monte Carlo Analysis: T1*.3_wtP  
Number of trials: 20 K!.t}s.t  
}]PHE(}7  
Initial Statistics: Normal Distribution UAT\ .  
i>]PW|]  
  Trial       Criterion        Change *U]&a^N  
      1     0.42804416    -0.11598818 7s#8-i  
Change in Focus                :      -0.400171 [U8/nT  
      2     0.54384387    -0.00018847 F]PsS(  
Change in Focus                :       1.018470 _@!vF,Wcf  
      3     0.44510003    -0.09893230 DKu$u]Z  
Change in Focus                :      -0.601922 kY'Wf`y(  
      4     0.18154684    -0.36248550 {_\cd.AuT  
Change in Focus                :       0.920681 r A(A$VR  
      5     0.28665820    -0.25737414 Xd5s8C/}  
Change in Focus                :       1.253875 [}ja\!P  
      6     0.21263372    -0.33139862 0bM_EC  
Change in Focus                :      -0.903878 Ao$k[#px  
      7     0.40051424    -0.14351809 ;'8Wl  
Change in Focus                :      -1.354815 DE?k|Get2  
      8     0.48754161    -0.05649072 -5+Yz9pv[  
Change in Focus                :       0.215922 ;Vat\,45pg  
      9     0.40357468    -0.14045766 t_w\k_ T  
Change in Focus                :       0.281783 R|M]mwa^w  
     10     0.26315315    -0.28087919 ZxSFElDD]E  
Change in Focus                :      -1.048393 GI/NouaNfm  
     11     0.26120585    -0.28282649  gmbRH5k  
Change in Focus                :       1.017611 T`fT[BaY  
     12     0.24033815    -0.30369419 {qi#  
Change in Focus                :      -0.109292 eG!ma`v  
     13     0.37164046    -0.17239188 6,q_M(;c  
Change in Focus                :      -0.692430 r^}0qO,XM  
     14     0.48597489    -0.05805744 1L4-;HYJm  
Change in Focus                :      -0.662040 M.t,o\xl  
     15     0.21462327    -0.32940907 vw;aL
#PP  
Change in Focus                :       1.611296 /qy6YF8;y  
     16     0.43378226    -0.11025008 F+(S-Qk1  
Change in Focus                :      -0.640081 k+-?b(z)$  
     17     0.39321881    -0.15081353 y!P!Fif'  
Change in Focus                :       0.914906 iSezrN  
     18     0.20692530    -0.33710703 ^rO"U[To  
Change in Focus                :       0.801607 sED"}F)  
     19     0.51374068    -0.03029165 VtI`Qcjc  
Change in Focus                :       0.947293  `i cs2po  
     20     0.38013374    -0.16389860 M9R'ONYAa  
Change in Focus                :       0.667010 j}//e%$a  
A/I\MN|  
Number of traceable Monte Carlo files generated: 20 z~vcwiYAP  
OS@uGp=  
Nominal     0.54403234 L5I!
YP#v  
Best        0.54384387    Trial     2 :FI D,  
Worst       0.18154684    Trial     4 K*T^w3=  
Mean        0.35770970 /i>n1>~yn  
Std Dev     0.11156454 ,Kj>F2{  
07:V[@'  
WyatHC  
Compensator Statistics: y@~ VE5N  
Change in back focus: _LwF:19Il  
Minimum            :        -1.354815 o{#aF=`{  
Maximum            :         1.611296 k*N!U[]  
Mean               :         0.161872 <L4$f(2  
Standard Deviation :         0.869664 |3e+ 
K.  
(J5}1Q<K  
90% >       0.20977951               8]`#ax 5  
80% >       0.22748071               L#K`F8Wi=  
50% >       0.38667627               0}e?hbF%U  
20% >       0.46553746               S=) c7t?a  
10% >       0.50064115                :<zIWje  
[nig^8  
End of Run. i \
NV<I  
Z C01MDIY  
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 -V{"Lzrfug  

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 +U<YM94?  
(CIcM3|9C  
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                 M5:.\0_  
80% >       0.22748071                 Wo&22,
EB  
50% >       0.38667627                 </_QldL_  
20% >       0.46553746                 l[[`-f8j  
10% >       0.50064115 5lHt~hB\  
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最后这个数值是MTF值呢，还是MTF的公差？ 9
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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？？？   Qc*p+N+$  
16Ka>=G  
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  : ~PpU'[  
90% >       0.20977951                 WzdlrkD  
80% >       0.22748071                 k|]l2zlT  
50% >       0.38667627                 %PR,TWe  
20% >       0.46553746                 3M^`6W[;  
10% >       0.50064115 H`3w=T+I  
....... HF&dHD2f  

GXv2B%i8  
REX/:sB<  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   7vH4}S\ q  
Mode                : Sensitivities @:9mTP7  
Sampling            : 2 wp/x|AV  
Nominal Criterion   : 0.54403234 uMC0XE|S  
Test Wavelength     : 0.6328 38JU-aq  
,6
U=F#z  
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？ ZW8;?#_  
<gr2k8m6$  
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