[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 o|#Mq"od  
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然后添加了默认公差分析，基本没变 5c
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然后运行分析的结果如下： 9$[I~I#z  
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Analysis of Tolerances R Fgy  
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File : E:\光学设计资料\zemax练习\f500.ZMX #sl_ BC9  
Title: QP/6N9/  
Date : TUE JUN 21 2011 _hP siZY9  
O^fg~g X  
Units are Millimeters. (eX9O4  
All changes are computed using linear differences. #T\Yi|Qs#  
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Paraxial Focus compensation only. xs
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WARNING: Solves should be removed prior to tolerancing. [Xp{ztGE  
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Mnemonics: ua$H"(#c  
TFRN: Tolerance on curvature in fringes. }1]E=!?)&  
TTHI: Tolerance on thickness. HQi57QB  
TSDX: Tolerance on surface decentering in x. Nda,G++5(  
TSDY: Tolerance on surface decentering in y. rMD
o5Z2  
TSTX: Tolerance on surface tilt in x (degrees). Lg[v-b=?I  
TSTY: Tolerance on surface tilt in y (degrees). DG_tmDT4  
TIRR: Tolerance on irregularity (fringes). R Wa4O#  
TIND: Tolerance on Nd index of refraction. C
j).  
TEDX: Tolerance on element decentering in x. :00 #l]g0q  
TEDY: Tolerance on element decentering in y. rBBA`Ut@F  
TETX: Tolerance on element tilt in x (degrees). x!\FB.h4!(  
TETY: Tolerance on element tilt in y (degrees). dc#Db~v}k  
+uR|0Jo8X  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. uP,{yna(  
rEI]{?eoF  
WARNING: Boundary constraints on compensators will be ignored. Z2z"K<Z W  
.54E*V1  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm =[Lo
9Sg  
Mode                : Sensitivities Vp3 9`m-W  
Sampling            : 2 f"XFf@!  
Nominal Criterion   : 0.54403234 ]TTX<R ZLr  
Test Wavelength     : 0.6328 y/'^r?  
-VK6Fq  
iG<rB-"  
Fields: XY Symmetric Angle in degrees Dd+ f,$  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY SB5DL_q  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 cv fh:~L  
.E!p
  
Sensitivity Analysis: F|._'i+B!  
TmS;ybsG  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| 7mulNq  
Type                      Value      Criterion        Change          Value      Criterion        Change nJ/wtw  
Fringe tolerance on surface 1 Mwdh]I,#  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 p'afCX@J  
Change in Focus                :      -0.000000                            0.000000 5ug?'TOj'  
Fringe tolerance on surface 2 KZ ezA4  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 'BT}'qN  
Change in Focus                :       0.000000                            0.000000 }g WSV  
Fringe tolerance on surface 3 T!6H5>zA  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 AYHfe#!  
Change in Focus                :      -0.000000                            0.000000 a,Gd\.D  
Thickness tolerance on surface 1 O[RmQ
8ll  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 yjvH)t/!.  
Change in Focus                :       0.000000                            0.000000 l ' ]d&  
Thickness tolerance on surface 2 9GnNL I{  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 o/I<)sa  
Change in Focus                :       0.000000                           -0.000000 2G"mm(   
Decenter X tolerance on surfaces 1 through 3 =YX/]g|9K  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 db"FC3/H  
Change in Focus                :       0.000000                            0.000000 RMB?H)p+  
Decenter Y tolerance on surfaces 1 through 3 sg12C  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 i|>
K  
Change in Focus                :       0.000000                            0.000000 %8H*}@n  
Tilt X tolerance on surfaces 1 through 3 (degrees) ?uUK9*N  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 :oF\?e  
Change in Focus                :       0.000000                            0.000000 G
y[;yLnX  
Tilt Y tolerance on surfaces 1 through 3 (degrees) AqVTHyCu  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 'l\V{0;mp  
Change in Focus                :       0.000000                            0.000000 cL*D_)?8  
Decenter X tolerance on surface 1 /U<-N'|  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 LGT\1u  
Change in Focus                :       0.000000                            0.000000 Tgp}k%R~  
Decenter Y tolerance on surface 1 /_rAy  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 '#<?QE!d2  
Change in Focus                :       0.000000                            0.000000  TyMRm  
Tilt X tolerance on surface (degrees) 1 c1wM"  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 "}DuAs  
Change in Focus                :       0.000000                            0.000000 oaI7j=Gp  
Tilt Y tolerance on surface (degrees) 1 _1*EMq6  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 t~p9iGX<  
Change in Focus                :       0.000000                            0.000000 `"[VkQFB/  
Decenter X tolerance on surface 2 iR4CY-  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 'j$iSW&  
Change in Focus                :       0.000000                            0.000000 0TSj]{[  
Decenter Y tolerance on surface 2 NTiJEzW}  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 A<iF37.  
Change in Focus                :       0.000000                            0.000000 ?[Q;275  
Tilt X tolerance on surface (degrees) 2 H;,cUb  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324  D@qq=M  
Change in Focus                :       0.000000                            0.000000 r6]r+!63"  
Tilt Y tolerance on surface (degrees) 2 mKZ?H$E%%  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 n4)G g~PE  
Change in Focus                :       0.000000                            0.000000 aEX;yy*  
Decenter X tolerance on surface 3 5L|yF"TI#  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 p<'mc|hGq  
Change in Focus                :       0.000000                            0.000000 u7@|fND 7  
Decenter Y tolerance on surface 3 ~/[cZY@  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 pw:<a2.  
Change in Focus                :       0.000000                            0.000000 @okC":Fw,  
Tilt X tolerance on surface (degrees) 3 Q"
VFcp:  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563
M#})  
Change in Focus                :       0.000000                            0.000000 e}/c`7M  
Tilt Y tolerance on surface (degrees) 3 BmUEo$w  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Gyy:.]>&  
Change in Focus                :       0.000000                            0.000000 PK3)M'[  
Irregularity of surface 1 in fringes 6luCi$bL  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 0"u*Kn  
Change in Focus                :       0.000000                            0.000000 dz5bW>  
Irregularity of surface 2 in fringes :<ujk  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 _@sqCf%|  
Change in Focus                :       0.000000                            0.000000 D8h?s  
Irregularity of surface 3 in fringes NNutpA}s  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 5#d"]7  
Change in Focus                :       0.000000                            0.000000 |kV,B_q
z  
Index tolerance on surface 1 ;#/b=j\pi  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ,k{{ZP P  
Change in Focus                :       0.000000                            0.000000 %Iv+Y$'3B  
Index tolerance on surface 2 n5S$Dl  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 .IpwTke'  
Change in Focus                :       0.000000                           -0.000000 2|EHNy!  
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Worst offenders: bLu6|YB  
Type                      Value      Criterion        Change '4HwS$mW3  
TSTY   2            -0.20000000     0.35349910    -0.19053324 &[S)zR=?  
TSTY   2             0.20000000     0.35349910    -0.19053324 y+Q!4A  
TSTX   2            -0.20000000     0.35349910    -0.19053324 HtY\!_Ea  
TSTX   2             0.20000000     0.35349910    -0.19053324 "5XD+qi  
TSTY   1            -0.20000000     0.42678383    -0.11724851 !SiZA"  
TSTY   1             0.20000000     0.42678383    -0.11724851 t]eB3)FX  
TSTX   1            -0.20000000     0.42678383    -0.11724851 a<!g*UVL0M  
TSTX   1             0.20000000     0.42678383    -0.11724851 /CKkT.Le  
TSTY   3            -0.20000000     0.42861670    -0.11541563 E'[pNU*"x-  
TSTY   3             0.20000000     0.42861670    -0.11541563 7_#v_ A^  
M%&`&{  
Estimated Performance Changes based upon Root-Sum-Square method: "793R^Tz  
Nominal MTF                 :     0.54403234 76=uk!#3{  
Estimated change            :    -0.36299231 F1Egcx/$V  
Estimated MTF               :     0.18104003 xZ`t~4qR  
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Compensator Statistics: Vl^jTX5N  
Change in back focus: J[LGa:``  
Minimum            :        -0.000000 !6<2JNf  
Maximum            :         0.000000 *i5&x/ds  
Mean               :        -0.000000 Z`b,0[rG[  
Standard Deviation :         0.000000 '-w G  
An]*J|nFIY  
Monte Carlo Analysis: P[XE5puC  
Number of trials: 20 y*Ex5N~JC  
?H*_:?=6  
Initial Statistics: Normal Distribution v~uwQ&AH  
Ku,Efr  
  Trial       Criterion        Change !3yR?Xe
m}  
      1     0.42804416    -0.11598818 `mCcD  
Change in Focus                :      -0.400171 +/Y)s5@<  
      2     0.54384387    -0.00018847 ?A62VV51CN  
Change in Focus                :       1.018470 .^JID~<?#  
      3     0.44510003    -0.09893230 *%Gy-5hM  
Change in Focus                :      -0.601922 kf"cd1  
      4     0.18154684    -0.36248550 cO(|>&tJ  
Change in Focus                :       0.920681 V3@^bc!  
      5     0.28665820    -0.25737414 Q.\+ XR_|  
Change in Focus                :       1.253875 / d6mlQS  
      6     0.21263372    -0.33139862 kP8Ypw&  
Change in Focus                :      -0.903878 5^* d4[&+  
      7     0.40051424    -0.14351809 db#y]>^l  
Change in Focus                :      -1.354815 lZn <v'y  
      8     0.48754161    -0.05649072 >2VB.f  
Change in Focus                :       0.215922 b.Y[:R_9&  
      9     0.40357468    -0.14045766 'Iu$4xo`[  
Change in Focus                :       0.281783 z)|56 F7'  
     10     0.26315315    -0.28087919 ;Kkn7&'F  
Change in Focus                :      -1.048393 ;2dhue  
     11     0.26120585    -0.28282649 a |z{Bb  
Change in Focus                :       1.017611 |dX#4Mq^,  
     12     0.24033815    -0.30369419 $)7-wCl</  
Change in Focus                :      -0.109292 1Ll@ ocE  
     13     0.37164046    -0.17239188 xZ,g6s2o  
Change in Focus                :      -0.692430 .'.|s?s  
     14     0.48597489    -0.05805744 rxa8X wo8  
Change in Focus                :      -0.662040 IK%j+UB  
     15     0.21462327    -0.32940907 bd)A6a\h  
Change in Focus                :       1.611296 &lGp /m:  
     16     0.43378226    -0.11025008 ^lf;Lc  
Change in Focus                :      -0.640081 8swj'SjX  
     17     0.39321881    -0.15081353 M6 0(yTm  
Change in Focus                :       0.914906 H3a}`3}U  
     18     0.20692530    -0.33710703 +8BH%f}X  
Change in Focus                :       0.801607 o"UqI  
     19     0.51374068    -0.03029165 _Dk;U*2  
Change in Focus                :       0.947293 2]>s@?[  
     20     0.38013374    -0.16389860 w #1l)+  
Change in Focus                :       0.667010 lZ_i~;u4@v  
?"sk"{  
Number of traceable Monte Carlo files generated: 20 2!" N9Adt  
Keof{>V=CA  
Nominal     0.54403234 UTs0=:+,t  
Best        0.54384387    Trial     2 3s>&h-E  
Worst       0.18154684    Trial     4 umls=iz  
Mean        0.35770970 bR;H@Fdg?  
Std Dev     0.11156454 %?RX}37K  
l|N1u=Z  
\".3x PkE  
Compensator Statistics: iY*Xm,#  
Change in back focus: -{L[Wt{1  
Minimum            :        -1.354815 $fC=v  
Maximum            :         1.611296 *AxKV5[H  
Mean               :         0.161872 4H1s"mP<  
Standard Deviation :         0.869664 XM8C{I1  
y4shW|>5_  
90% >       0.20977951               %C)U F  
80% >       0.22748071               }A2@1TTPX  
50% >       0.38667627               &:{|nDT_2  
20% >       0.46553746               Iqo4INGIi  
10% >       0.50064115                uMqo)J@s  
JLg_oK6  
End of Run. k`TEA?RfQ  
(mza&WF7  
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 vEfX'gyk  
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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 b5H[~8mf  
B>~E6j7[Mp  
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                 d5u,x.R  
80% >       0.22748071                 -pLb%f0?  
50% >       0.38667627                 vguqk!eo4  
20% >       0.46553746                 ~}TVM%0RTq  
10% >       0.50064115 ]Q)TqwYF  
U>:p`@  
最后这个数值是MTF值呢，还是MTF的公差？ ok[R`99  
l?#([(WM  
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？？？   47t^{WrT  
SUvHLOA  
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  : z)
Bc91A  
90% >       0.20977951                 ~FDJKGK  
80% >       0.22748071                 Z wIsEJz  
50% >       0.38667627                 *`mwm:4  
20% >       0.46553746                 Fe`$mtPu.  
10% >       0.50064115 +=;F vb  
....... +dIg&}Tr  

_[IN9ZC2G  
9G 9!=J  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   -=2tKH`Q  
Mode                : Sensitivities 8@Y]dzgjj  
Sampling            : 2 m[(2  
Nominal Criterion   : 0.54403234 I`zn#U'  
Test Wavelength     : 0.6328 !V#(g./W  
Y|>y]x  
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？ DMsxHAE1  
rp+&ax}Wh  
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