[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 W*;~(hDz  
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然后添加了默认公差分析，基本没变 QW6F24  
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然后运行分析的结果如下： jC ,f
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Analysis of Tolerances +`kfcA#pi  
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File : E:\光学设计资料\zemax练习\f500.ZMX YKf,vHau  
Title: y`:}~nUdT  
Date : TUE JUN 21 2011 k6ERGQ9|I  
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Units are Millimeters. i96Pel  
All changes are computed using linear differences. 9H2^4D8  
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Paraxial Focus compensation only. );}k@w fw)  
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WARNING: Solves should be removed prior to tolerancing. x?KgEcnw2X  
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Mnemonics: gQ.yNe
 
TFRN: Tolerance on curvature in fringes. V;L^q?v !  
TTHI: Tolerance on thickness. dn$1OhN8M  
TSDX: Tolerance on surface decentering in x. Fj"gCBaR  
TSDY: Tolerance on surface decentering in y. hdW",Bf'  
TSTX: Tolerance on surface tilt in x (degrees). uT8/xNB!  
TSTY: Tolerance on surface tilt in y (degrees). 5,I'6$J  
TIRR: Tolerance on irregularity (fringes). z!)_'A  
TIND: Tolerance on Nd index of refraction. !e&ZhtTuC  
TEDX: Tolerance on element decentering in x. 'I($IM  
TEDY: Tolerance on element decentering in y. +Qt=N6>  
TETX: Tolerance on element tilt in x (degrees). j;<Yje&Wz  
TETY: Tolerance on element tilt in y (degrees). W)1)zOD  
6LL/wemq  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 7S7gU\qOj  
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WARNING: Boundary constraints on compensators will be ignored. (u@[}!  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm `^9 Zbwq  
Mode                : Sensitivities @j`_)Y\
 
Sampling            : 2 'j !!h4  
Nominal Criterion   : 0.54403234 P_j?V"i<  
Test Wavelength     : 0.6328 as)2ny!u  
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xM9EO(u  
Fields: XY Symmetric Angle in degrees bENfEOf,  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY BXO(B'1)]  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 \bCm]wR  
lInq=  
Sensitivity Analysis: 24:;vcb  
; @ h{-@  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| +)^F9LPl  
Type                      Value      Criterion        Change          Value      Criterion        Change >1`FRw<  
Fringe tolerance on surface 1 ;y%lOYm  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 `x lsvK>  
Change in Focus                :      -0.000000                            0.000000 !X(Lvt/  
Fringe tolerance on surface 2 pL]C]HGv  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ;tf1#6{  
Change in Focus                :       0.000000                            0.000000 3q R@$pm  
Fringe tolerance on surface 3 a^<  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Nb>|9nu O  
Change in Focus                :      -0.000000                            0.000000 R@5jEf  
Thickness tolerance on surface 1 >T%Jlj3ZG  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 @X>k@M  
Change in Focus                :       0.000000                            0.000000 i5?)E7-  
Thickness tolerance on surface 2 Ox8dnPcx  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 $)mq  
Change in Focus                :       0.000000                           -0.000000 5z~Ji77!  
Decenter X tolerance on surfaces 1 through 3 p/:)Z_  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 VQZ3&]o  
Change in Focus                :       0.000000                            0.000000 N6c']!aM@  
Decenter Y tolerance on surfaces 1 through 3 =   
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 g.kpUs  
Change in Focus                :       0.000000                            0.000000 5@tpJ8E8$  
Tilt X tolerance on surfaces 1 through 3 (degrees) f~jx2?W  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ')5W  
Change in Focus                :       0.000000                            0.000000 ge`)sB,  
Tilt Y tolerance on surfaces 1 through 3 (degrees) GxLoNVr  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 x +!<_p  
Change in Focus                :       0.000000                            0.000000 brb8C%j}9  
Decenter X tolerance on surface 1 D7X-|`kH  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 U`,&Q]  
Change in Focus                :       0.000000                            0.000000 KunK.m  
Decenter Y tolerance on surface 1 *;7&  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ]cc4+}L~  
Change in Focus                :       0.000000                            0.000000 uTpKT7t  
Tilt X tolerance on surface (degrees) 1 xB68RQe)  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 !aeL*`;  
Change in Focus                :       0.000000                            0.000000 d0>V^cB'?  
Tilt Y tolerance on surface (degrees) 1 ~q?IG5s*Z  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 }H?8~S=  
Change in Focus                :       0.000000                            0.000000 QBR
9BR  
Decenter X tolerance on surface 2 qRJg/~_h{  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 %;!@\5$  
Change in Focus                :       0.000000                            0.000000 =jkC]0qx  
Decenter Y tolerance on surface 2 aP!a?xq  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ?|%^'(U}  
Change in Focus                :       0.000000                            0.000000 /1h`O@VA  
Tilt X tolerance on surface (degrees) 2 7ZET@  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 -3qB,KT  
Change in Focus                :       0.000000                            0.000000 nR6~oB{-  
Tilt Y tolerance on surface (degrees) 2 H.7gSB1  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ::dLOf8o  
Change in Focus                :       0.000000                            0.000000 \u2K?wC  
Decenter X tolerance on surface 3 3Ym5SrKK  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 '# "Z$  
Change in Focus                :       0.000000                            0.000000 J@oGAa%3)  
Decenter Y tolerance on surface 3 ~B:Lai4"  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 F] +t/
 
Change in Focus                :       0.000000                            0.000000 ;QR|v  
Tilt X tolerance on surface (degrees) 3 76c4~IG#  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 tRS^|??  
Change in Focus                :       0.000000                            0.000000 5dMIv<#T`  
Tilt Y tolerance on surface (degrees) 3 3rZFN^  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 EQyRP. dq  
Change in Focus                :       0.000000                            0.000000 A%"XNk  
Irregularity of surface 1 in fringes !Wvzum@5D  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 dY~3YD[  
Change in Focus                :       0.000000                            0.000000 7t\kof  
Irregularity of surface 2 in fringes uz ` H  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ~1S7\e7{  
Change in Focus                :       0.000000                            0.000000 37ll8  
Irregularity of surface 3 in fringes e[i&2mM  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 mppBc-#EYr  
Change in Focus                :       0.000000                            0.000000 T?) U|  
Index tolerance on surface 1 gET& +M  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ^Xt9AM]e  
Change in Focus                :       0.000000                            0.000000 +DF<o U~  
Index tolerance on surface 2 S5"xb  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 D,mFme  
Change in Focus                :       0.000000                           -0.000000 Ki^m&P   
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Worst offenders: "h
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Type                      Value      Criterion        Change $B~a*zZ7  
TSTY   2            -0.20000000     0.35349910    -0.19053324 U@|{RP  
TSTY   2             0.20000000     0.35349910    -0.19053324 m/0G=%d%k
 
TSTX   2            -0.20000000     0.35349910    -0.19053324 8!3+Obj  
TSTX   2             0.20000000     0.35349910    -0.19053324 PP.k>zsx  
TSTY   1            -0.20000000     0.42678383    -0.11724851 _( w4\]  
TSTY   1             0.20000000     0.42678383    -0.11724851 {AO3o<-h  
TSTX   1            -0.20000000     0.42678383    -0.11724851 -njxc{b  
TSTX   1             0.20000000     0.42678383    -0.11724851 9=rYzA?)+  
TSTY   3            -0.20000000     0.42861670    -0.11541563 18}L89S
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TSTY   3             0.20000000     0.42861670    -0.11541563 ~NpnRIt  
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Estimated Performance Changes based upon Root-Sum-Square method: #E^%h  
Nominal MTF                 :     0.54403234 sG}}a}U1  
Estimated change            :    -0.36299231 `*KS` z?  
Estimated MTF               :     0.18104003 >/6v` 8F  
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Compensator Statistics: 6:v8J1G(<  
Change in back focus: qI<*Cze  
Minimum            :        -0.000000 k,X)PQc  
Maximum            :         0.000000 aMm`G}9n  
Mean               :        -0.000000 I4m)5G?O2  
Standard Deviation :         0.000000 s<E_74q1  
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Monte Carlo Analysis: tK g%5;v  
Number of trials: 20 '(+l77G  
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Initial Statistics: Normal Distribution U,RIr8G  
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  Trial       Criterion        Change _=UXNr8S  
      1     0.42804416    -0.11598818 d^ipf*aLC  
Change in Focus                :      -0.400171 ovm*,La)g  
      2     0.54384387    -0.00018847 |8`}yRsQ  
Change in Focus                :       1.018470 '!yyg#  
      3     0.44510003    -0.09893230 T1n GBl\(  
Change in Focus                :      -0.601922 :eHh }  
      4     0.18154684    -0.36248550 8uyVx9C0  
Change in Focus                :       0.920681 "9LPq  
      5     0.28665820    -0.25737414 &Radpb2p6  
Change in Focus                :       1.253875 MMhd-B1O&  
      6     0.21263372    -0.33139862 BAX])~_  
Change in Focus                :      -0.903878 8'^eH1d'  
      7     0.40051424    -0.14351809 (C6Y*Zm\  
Change in Focus                :      -1.354815 u>k;PUH4  
      8     0.48754161    -0.05649072 _32ltnBX  
Change in Focus                :       0.215922 -d_FB?X  
      9     0.40357468    -0.14045766  gxU(&  
Change in Focus                :       0.281783 k^R>xV  
     10     0.26315315    -0.28087919 168U-<  
Change in Focus                :      -1.048393 q69a-5q  
     11     0.26120585    -0.28282649 A<>W^ow  
Change in Focus                :       1.017611 2q2wo&uK  
     12     0.24033815    -0.30369419 1;? L:A  
Change in Focus                :      -0.109292 XKks j!'B  
     13     0.37164046    -0.17239188 (9Hc`gd)p  
Change in Focus                :      -0.692430 sUj#:X  
     14     0.48597489    -0.05805744 (e F5?I  
Change in Focus                :      -0.662040 8P5xRUkV  
     15     0.21462327    -0.32940907 }pTw$B  
Change in Focus                :       1.611296 27u$VHwb  
     16     0.43378226    -0.11025008 7-^df0  
Change in Focus                :      -0.640081 2"BlV*\lS  
     17     0.39321881    -0.15081353 <9@VY  
Change in Focus                :       0.914906 .rxc"fR4_  
     18     0.20692530    -0.33710703 Sn0?_vH4  
Change in Focus                :       0.801607 35&&*$Jm  
     19     0.51374068    -0.03029165 6|_ S|N  
Change in Focus                :       0.947293 TuaT-Z~U{  
     20     0.38013374    -0.16389860 Bu6t3  
Change in Focus                :       0.667010 v7&$(HJ>]L  
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Number of traceable Monte Carlo files generated: 20 QL|Vke:N4  
YJ1P5u:  
Nominal     0.54403234 s-8>AW ep  
Best        0.54384387    Trial     2 2{U4wTu  
Worst       0.18154684    Trial     4 ry7(V:ic  
Mean        0.35770970 <<UlFE9"  
Std Dev     0.11156454 JpSS[pOg  
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Compensator Statistics: y{v*iH<  
Change in back focus: -09<; U
 
Minimum            :        -1.354815 QFX|ZsmK  
Maximum            :         1.611296 !knYD}Rxd  
Mean               :         0.161872 $f)Y !<b
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Standard Deviation :         0.869664 )dlt$VX  
k]f73r  
90% >       0.20977951               Z.h`yRhO  
80% >       0.22748071               F$+_Z~yt3;  
50% >       0.38667627               ipU"|{NK  
20% >       0.46553746               {p2%4  
10% >       0.50064115                9k$uo_i'  
+A:}5{  
End of Run. i uN8gHx  
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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 xX|-5cM;  
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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 ;{Ovqo|  
9$)4C|  
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                 \y<n{"a  
80% >       0.22748071                 ogQbST  
50% >       0.38667627                 Z!hDTT  
20% >       0.46553746                 kOkgsQQ  
10% >       0.50064115 9]d$G$Kv9  
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最后这个数值是MTF值呢，还是MTF的公差？ 1UmV&  
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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？？？   Ig S.U  
k^ID  
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  : O@?? NF6G  
90% >       0.20977951                 QH#|R92:  
80% >       0.22748071                 Hz*!c#  
50% >       0.38667627                 3Pkzzyk_|D  
20% >       0.46553746                 E^Q|v45d  
10% >       0.50064115 .hBE&Y>\  
....... \q%li)  

bL{wCo-Y  
StaX~J6=  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   )^L+iht  
Mode                : Sensitivities ep>S$a*|  
Sampling            : 2 |jF)~k6  
Nominal Criterion   : 0.54403234 S1*n4w.H  
Test Wavelength     : 0.6328 cYmMO[4YG'  
Tld%NE  
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 ;PS+S9  
j*rra  
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