[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 *pYawT  
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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 T}jW,Ost  
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图片:2.jpg

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然后运行分析的结果如下： *>k6n5%  
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Analysis of Tolerances &],O\TAul  
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File : E:\光学设计资料\zemax练习\f500.ZMX pQoZDD@B$  
Title: c1xX)cF  
Date : TUE JUN 21 2011 (_R!:H(]m  
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Units are Millimeters. -Dwe,N"{2  
All changes are computed using linear differences. sWKv>bx  
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Paraxial Focus compensation only. ~xJ^YkyH  
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WARNING: Solves should be removed prior to tolerancing. 7#j9"*
 
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Mnemonics: g,B@*2Uj  
TFRN: Tolerance on curvature in fringes. *G[` T%g  
TTHI: Tolerance on thickness. xLP8*lvy  
TSDX: Tolerance on surface decentering in x.  USJ4Z  
TSDY: Tolerance on surface decentering in y. X([@}ren  
TSTX: Tolerance on surface tilt in x (degrees). b?/Su<q  
TSTY: Tolerance on surface tilt in y (degrees). S`& yVzv  
TIRR: Tolerance on irregularity (fringes). CdKs+x&tZ  
TIND: Tolerance on Nd index of refraction. PHMp,z8  
TEDX: Tolerance on element decentering in x. _TyQC1 d  
TEDY: Tolerance on element decentering in y. v}<z_i5/C.  
TETX: Tolerance on element tilt in x (degrees). i "aQm  
TETY: Tolerance on element tilt in y (degrees). .*?)L3n+t  
Lr Kx  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 4'.]-u  
jX,A.  
WARNING: Boundary constraints on compensators will be ignored. MfraTUxIo/  
Uv(}x7e)  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm GuF-HP}xM  
Mode                : Sensitivities b/4gs62{k  
Sampling            : 2 bd3>IWihp  
Nominal Criterion   : 0.54403234 `FK qVd  
Test Wavelength     : 0.6328 D=)qd@,K  
qc3?Aplj  
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Fields: XY Symmetric Angle in degrees *7qa]i^]  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY _k5$.f:Yj<  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 xOZvQ\%  
7o-}86x#  
Sensitivity Analysis: wKJK!P  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| (A;HB@)[A  
Type                      Value      Criterion        Change          Value      Criterion        Change 6wb M$|yFj  
Fringe tolerance on surface 1 }dSFv   
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 {XW>3 "  
Change in Focus                :      -0.000000                            0.000000 0.#%KfQ  
Fringe tolerance on surface 2 ,88%eX|  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 7>gW2m  
Change in Focus                :       0.000000                            0.000000 >P6U0  
Fringe tolerance on surface 3 SNV;s,  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ve4QS P  
Change in Focus                :      -0.000000                            0.000000 !)c0  
Thickness tolerance on surface 1 R~bLEo  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 (; Zl  
Change in Focus                :       0.000000                            0.000000 2Mu(GUe;  
Thickness tolerance on surface 2 U27ja|W^  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 |h:3BV_  
Change in Focus                :       0.000000                           -0.000000 =OR&,xt  
Decenter X tolerance on surfaces 1 through 3 l> >BeZ  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 &jDRRT3  
Change in Focus                :       0.000000                            0.000000 1'5!")r  
Decenter Y tolerance on surfaces 1 through 3 JM*rPzp  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 'eoI~*}3WQ  
Change in Focus                :       0.000000                            0.000000 h#8{fr)6  
Tilt X tolerance on surfaces 1 through 3 (degrees) tI2p-d9B  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314
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Change in Focus                :       0.000000                            0.000000 VE/~tT;  
Tilt Y tolerance on surfaces 1 through 3 (degrees) Bc#6mO-  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 T f^O(  
Change in Focus                :       0.000000                            0.000000 YGLR%PYv"  
Decenter X tolerance on surface 1 4W+nSv  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 y)Lyo'`  
Change in Focus                :       0.000000                            0.000000 /h@rLJ)o>  
Decenter Y tolerance on surface 1 Rh7=,=u  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ;<`  
Change in Focus                :       0.000000                            0.000000 N?Ss/by8Sg  
Tilt X tolerance on surface (degrees) 1 i4 tW8Il  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 X .S8vlb4z  
Change in Focus                :       0.000000                            0.000000 n]btazM{   
Tilt Y tolerance on surface (degrees) 1 Fw;Y)y=O  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 QLTE`t5w3'  
Change in Focus                :       0.000000                            0.000000 W&^2Fb  
Decenter X tolerance on surface 2 yDw^xGws  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 L G9#D  
Change in Focus                :       0.000000                            0.000000 II_MY#0X  
Decenter Y tolerance on surface 2 Xgm9>/y  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 o6;VrpaNi  
Change in Focus                :       0.000000                            0.000000 &nZ.$UK<  
Tilt X tolerance on surface (degrees) 2 )^'wcBod,  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 z9KsSlS ^  
Change in Focus                :       0.000000                            0.000000 0 .p $q  
Tilt Y tolerance on surface (degrees) 2 iAWoKW  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 FkT% -I  
Change in Focus                :       0.000000                            0.000000 -OP5v8c f  
Decenter X tolerance on surface 3 +<I1@C  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Py,@or7n  
Change in Focus                :       0.000000                            0.000000 ]0:R^dHE  
Decenter Y tolerance on surface 3 @)8C
 
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 wwmODw<tT  
Change in Focus                :       0.000000                            0.000000 FJ&zU<E  
Tilt X tolerance on surface (degrees) 3 8JAT2a61ur  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 R:JS)>B  
Change in Focus                :       0.000000                            0.000000 r^6vo6^  
Tilt Y tolerance on surface (degrees) 3 'lNl><
e-  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 JXnPKAN  
Change in Focus                :       0.000000                            0.000000 63- YWhs;  
Irregularity of surface 1 in fringes ,@ Cru=  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 u]cnbm  
Change in Focus                :       0.000000                            0.000000 Cj):g,[a  
Irregularity of surface 2 in fringes f1>^kl3@P  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047  g^En6n)  
Change in Focus                :       0.000000                            0.000000 {1YT a:evl  
Irregularity of surface 3 in fringes +=@Z5eu  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 z:R2Wksg  
Change in Focus                :       0.000000                            0.000000 &f qmO>M  
Index tolerance on surface 1
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TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 fhn
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Change in Focus                :       0.000000                            0.000000 o6KBJx  
Index tolerance on surface 2 6YU2  !x  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 a^5`fA/L,  
Change in Focus                :       0.000000                           -0.000000 9e :E% 2  
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Worst offenders: HNuwq\w  
Type                      Value      Criterion        Change 2i(|?XJ^  
TSTY   2            -0.20000000     0.35349910    -0.19053324 U w`LWG3T  
TSTY   2             0.20000000     0.35349910    -0.19053324 P[nWmY  
TSTX   2            -0.20000000     0.35349910    -0.19053324 mLY*  
TSTX   2             0.20000000     0.35349910    -0.19053324 <p0$Q!^dK=  
TSTY   1            -0.20000000     0.42678383    -0.11724851 N<>dg  
TSTY   1             0.20000000     0.42678383    -0.11724851 D+o.9I/{  
TSTX   1            -0.20000000     0.42678383    -0.11724851 c)6Y.[
).  
TSTX   1             0.20000000     0.42678383    -0.11724851 3Yj}ra}  
TSTY   3            -0.20000000     0.42861670    -0.11541563 X0Oq lAw  
TSTY   3             0.20000000     0.42861670    -0.11541563 Sc~kO4  
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Estimated Performance Changes based upon Root-Sum-Square method: *E)Y?9u"  
Nominal MTF                 :     0.54403234 ^]R0d3
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Estimated change            :    -0.36299231 T*T.\b  
Estimated MTF               :     0.18104003 x(7K3(#|  
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Compensator Statistics: <7] z'  
Change in back focus: #=.h:_9  
Minimum            :        -0.000000 'qd")  
Maximum            :         0.000000 l*m|b""].u  
Mean               :        -0.000000 t+(CAP|,  
Standard Deviation :         0.000000 tl^[MLQa  
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Monte Carlo Analysis: +tN-X'u##  
Number of trials: 20 `A^} X  
YYvs~?bAy  
Initial Statistics: Normal Distribution z"O-d<U5  
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  Trial       Criterion        Change ]Ojt3)fB  
      1     0.42804416    -0.11598818 x+TNF>%'D  
Change in Focus                :      -0.400171 hW+Dko(s  
      2     0.54384387    -0.00018847 j5)qF1W,  
Change in Focus                :       1.018470
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      3     0.44510003    -0.09893230 HYH!;  
Change in Focus                :      -0.601922 ha),N<'  
      4     0.18154684    -0.36248550 N+V-V-PVk  
Change in Focus                :       0.920681 DJW1kR  
      5     0.28665820    -0.25737414 E0pQRGPA  
Change in Focus                :       1.253875 |5/[0V-vy  
      6     0.21263372    -0.33139862 d#tUG~jc  
Change in Focus                :      -0.903878 UK<"|2^sT  
      7     0.40051424    -0.14351809 XN0Y#l  
Change in Focus                :      -1.354815 O&s6blD11  
      8     0.48754161    -0.05649072 an2Tc*=~l(  
Change in Focus                :       0.215922 Mvh_>-i  
      9     0.40357468    -0.14045766 4>E2G:  
Change in Focus                :       0.281783 By_Ui6:D  
     10     0.26315315    -0.28087919 [Bh]\I'  
Change in Focus                :      -1.048393 Z7/dRc   
     11     0.26120585    -0.28282649 YBO53S]=  
Change in Focus                :       1.017611 !jW32$YTR  
     12     0.24033815    -0.30369419 s?E:
]  
Change in Focus                :      -0.109292 ?f`-&c;  
     13     0.37164046    -0.17239188 aS7zG2R4H  
Change in Focus                :      -0.692430 >D;hT*3  
     14     0.48597489    -0.05805744 YC_^jRB8n  
Change in Focus                :      -0.662040 /fq6-;co+  
     15     0.21462327    -0.32940907 @ih}x  
Change in Focus                :       1.611296 -CrZ'k;4  
     16     0.43378226    -0.11025008 g3XAs@  
Change in Focus                :      -0.640081 7. .vaq#  
     17     0.39321881    -0.15081353 7e<Q{aB  
Change in Focus                :       0.914906 ,H?p9L; qp  
     18     0.20692530    -0.33710703 t_
rDXhM  
Change in Focus                :       0.801607 ;^*!<F%t9R  
     19     0.51374068    -0.03029165 h<.[U $,  
Change in Focus                :       0.947293 gNd J=r4  
     20     0.38013374    -0.16389860 8TPm[r]  
Change in Focus                :       0.667010 ^-!HbbVv  
|7$h@KF=S  
Number of traceable Monte Carlo files generated: 20 hI8C XG  
z{d5Lrk  
Nominal     0.54403234 "/?qT;<$)  
Best        0.54384387    Trial     2 .[fz x`  
Worst       0.18154684    Trial     4 QO.gt*"  
Mean        0.35770970 ODEXQl}R  
Std Dev     0.11156454 '5U$`Xe1  
SEIu4 l$E  
Y(zN  
Compensator Statistics: c1J)yv1y  
Change in back focus: ([-=NT}Aq  
Minimum            :        -1.354815 `W n5 .V  
Maximum            :         1.611296 1}E@lOc  
Mean               :         0.161872 q4iD59yd)S  
Standard Deviation :         0.869664 QP%Fz#u`  
)
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90% >       0.20977951               J\'5CG  
80% >       0.22748071               l%(`<a]VIB  
50% >       0.38667627               t`,IW{  
20% >       0.46553746               -<!17jy  
10% >       0.50064115                %UQB?dkf$  
it@}dZ  
End of Run. >}{-!  
}>~>5jc/Pg  
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 w
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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 FT>~ES]cQd  
7$W;4!BN*  
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                 )YMlFzYr  
80% >       0.22748071                 3E}NiD\V}  
50% >       0.38667627                 JkDPuTXD  
20% >       0.46553746                 <cv2-?L{  
10% >       0.50064115 W0MnGzZ  
)d(0Y<e@  
最后这个数值是MTF值呢，还是MTF的公差？ 0\Yx.\X,  
|1+(Ny.%k  
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？？？   25a#eDbqi  
fb"J Bc}X  
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  : ;'=VrE6  
90% >       0.20977951                 [i(Cl}  
80% >       0.22748071                 v9E+(4I9_  
50% >       0.38667627                 |?x^8e<*  
20% >       0.46553746                 0 &*P}U}Uc  
10% >       0.50064115 E\R raPkQT  
....... W il{FcHY  

+P[88!  
]`zjRRd  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   tgO+*q5B  
Mode                : Sensitivities 13ipaz  
Sampling            : 2 `aO.=:O_  
Nominal Criterion   : 0.54403234 7'_nc!ME  
Test Wavelength     : 0.6328 G$cxDGo  
5Xwk*@t2a  
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？ ZR1+ O8  
(.PmDBW  
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