[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 UM4@H1  
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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 0NL :z1N-h  
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图片:2.jpg

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然后运行分析的结果如下： %PQldPL8  
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Analysis of Tolerances /e.FY9  

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File : E:\光学设计资料\zemax练习\f500.ZMX o5N]((9  
Title: \3t,|%v  
Date : TUE JUN 21 2011 @DfkGm[%  
sTKab :  
Units are Millimeters. -@%t"8  
All changes are computed using linear differences. Y)'!'J  
5wzQ?07T_  
Paraxial Focus compensation only. P<>[e9|  
y0scL7/  
WARNING: Solves should be removed prior to tolerancing. { A:LAAf[6  
"2ZIoa!^  
Mnemonics: 5h|'DOx|o  
TFRN: Tolerance on curvature in fringes. -;+m%"k5  
TTHI: Tolerance on thickness. 5"1!p3`\D{  
TSDX: Tolerance on surface decentering in x. `xISkW4%  
TSDY: Tolerance on surface decentering in y.
!(W[!%  
TSTX: Tolerance on surface tilt in x (degrees). pGY [f@_x-  
TSTY: Tolerance on surface tilt in y (degrees). |9+bSH9  
TIRR: Tolerance on irregularity (fringes). o{9?:*?7  
TIND: Tolerance on Nd index of refraction. jmR
hAJV  
TEDX: Tolerance on element decentering in x. CHPL>'NJzc  
TEDY: Tolerance on element decentering in y. bHO7*E  
TETX: Tolerance on element tilt in x (degrees). fkW3~b  
TETY: Tolerance on element tilt in y (degrees). Ezi' 2S
c  
~J%R-{U9  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. rQ=xcn[A  
+7Sf8tg\  
WARNING: Boundary constraints on compensators will be ignored. B1y<.1k  
'GrRuT<  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm btUq  
Mode                : Sensitivities $TR=3[j  
Sampling            : 2 HMF8;,<_w?  
Nominal Criterion   : 0.54403234 ;JAK[o8i  
Test Wavelength     : 0.6328 !-KCFMvT  
UV?[d:\>'  
kclp}  
Fields: XY Symmetric Angle in degrees $b4*/vMr  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY )qbI{^_g  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ]9fS@SHdx  
Mg#`t$u  
Sensitivity Analysis: k&OC&  
h{\t*U54'  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| /CIx$G  
Type                      Value      Criterion        Change          Value      Criterion        Change <H<!ht%q3  
Fringe tolerance on surface 1 )y6QAp  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374  NI^{$QMj  
Change in Focus                :      -0.000000                            0.000000 &8Zeq3~  
Fringe tolerance on surface 2 w"q-#,37j  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 R'Sa?6xS4  
Change in Focus                :       0.000000                            0.000000 >+L7k^[,0  
Fringe tolerance on surface 3 aZP2
R"  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 :){)JZ}-95  
Change in Focus                :      -0.000000                            0.000000 bi+9R-=&  
Thickness tolerance on surface 1 Cm^Ylp  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Xc{ZN1 4n  
Change in Focus                :       0.000000                            0.000000 9`&?hi49nK  
Thickness tolerance on surface 2 ol50d73B  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 w_\nB}_  
Change in Focus                :       0.000000                           -0.000000 gRHtgR)T3  
Decenter X tolerance on surfaces 1 through 3 VXiui'/(  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 [9LxhPi  
Change in Focus                :       0.000000                            0.000000 [Uswf3  
Decenter Y tolerance on surfaces 1 through 3 RZ*<n$#6  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Jl\'V
  
Change in Focus                :       0.000000                            0.000000 U4]30B{;H  
Tilt X tolerance on surfaces 1 through 3 (degrees) ?fB5t;~E  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 5Wo5n7o  
Change in Focus                :       0.000000                            0.000000 46ILs1T6  
Tilt Y tolerance on surfaces 1 through 3 (degrees) Is ot4HLM  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 2H6:np|O  
Change in Focus                :       0.000000                            0.000000 <&`:&7  
Decenter X tolerance on surface 1 Z A[)  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 {y1q7Z.M  
Change in Focus                :       0.000000                            0.000000 I4ebkPgf  
Decenter Y tolerance on surface 1 AH|Y<\  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 C1tb`  
Change in Focus                :       0.000000                            0.000000 -U7,k\g  
Tilt X tolerance on surface (degrees) 1 axtb<5&  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 *-6?  
Change in Focus                :       0.000000                            0.000000 M%3Wy"YQ,n  
Tilt Y tolerance on surface (degrees) 1 w#sq'vo4%  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Oc#>QZ3  
Change in Focus                :       0.000000                            0.000000 0iF-}o  
Decenter X tolerance on surface 2 S.1(3j*  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 6s5yyy=L%~  
Change in Focus                :       0.000000                            0.000000 wE?CvL  
Decenter Y tolerance on surface 2 g@Ld"5$^2  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 #,TELzUVE  
Change in Focus                :       0.000000                            0.000000 Vu%n&uF  
Tilt X tolerance on surface (degrees) 2 qIz}$%!A  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 X{`1:c'x  
Change in Focus                :       0.000000                            0.000000 7|Xe&o<n  
Tilt Y tolerance on surface (degrees) 2 C!5I?z&  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 f9a$$nb3`  
Change in Focus                :       0.000000                            0.000000 0Q`&inwh  
Decenter X tolerance on surface 3 Xo\S9,s{  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 *Z; r B  
Change in Focus                :       0.000000                            0.000000 St+ "ih%  
Decenter Y tolerance on surface 3 g>yry}>04%  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 &8n?  
Change in Focus                :       0.000000                            0.000000 "oe!M'aj`1  
Tilt X tolerance on surface (degrees) 3 >nK%^T  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Y[@0qc3UO  
Change in Focus                :       0.000000                            0.000000 #jm@N7OZ  
Tilt Y tolerance on surface (degrees) 3 |g!`\@O  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 C B/r]+4  
Change in Focus                :       0.000000                            0.000000 2QL?]Vo  
Irregularity of surface 1 in fringes +j.qZ8  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 t0.;nv@A0  
Change in Focus                :       0.000000                            0.000000 e}e6r3faz  
Irregularity of surface 2 in fringes y6FKg)  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 _4v"")Xe  
Change in Focus                :       0.000000                            0.000000 8
ljuc5,J  
Irregularity of surface 3 in fringes <aXoB*Y  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 nE$ f  
Change in Focus                :       0.000000                            0.000000 zqf[Z3  
Index tolerance on surface 1 Yz\ N&0"  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 </=3g>9Z  
Change in Focus                :       0.000000                            0.000000 '60//"9>k/  
Index tolerance on surface 2 xCq'[9oU  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 X$^JAZ09  
Change in Focus                :       0.000000                           -0.000000 #ua^{OrC/  
XXm'6xD-  
Worst offenders: 5z Kqb  
Type                      Value      Criterion        Change '%&z.{  
TSTY   2            -0.20000000     0.35349910    -0.19053324 -=mwy  
TSTY   2             0.20000000     0.35349910    -0.19053324 O1'K>teF%  
TSTX   2            -0.20000000     0.35349910    -0.19053324 u{Ak:0G7  
TSTX   2             0.20000000     0.35349910    -0.19053324 (v^Z BM_  
TSTY   1            -0.20000000     0.42678383    -0.11724851 MMd.0JuaO  
TSTY   1             0.20000000     0.42678383    -0.11724851 ]-bQNYKX  
TSTX   1            -0.20000000     0.42678383    -0.11724851 {m[Wyb(  
TSTX   1             0.20000000     0.42678383    -0.11724851 kC`Rd:5  
TSTY   3            -0.20000000     0.42861670    -0.11541563 \c%g M1  
TSTY   3             0.20000000     0.42861670    -0.11541563 ? |VysJ  
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Estimated Performance Changes based upon Root-Sum-Square method: F&az":  
Nominal MTF                 :     0.54403234 RX>2~^  
Estimated change            :    -0.36299231 \0&SI1Yp  
Estimated MTF               :     0.18104003 9go))&`PJL  
CN\=9Rvs  
Compensator Statistics: fEwifSp.  
Change in back focus: Sc_5FX\Yx  
Minimum            :        -0.000000 `tVy_/3(9  
Maximum            :         0.000000 MUwxgAG`G  
Mean               :        -0.000000 d.AC%&W  
Standard Deviation :         0.000000 aq$q ~,E  
t^U^Tr  
Monte Carlo Analysis: 4K7{f+
T  
Number of trials: 20 M*`hDdS  
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Initial Statistics: Normal Distribution #xp(B5  
(w$'o*z;(  
  Trial       Criterion        Change ]0-<>  
      1     0.42804416    -0.11598818 YPEnNt+  
Change in Focus                :      -0.400171 D/:3RZF  
      2     0.54384387    -0.00018847 x<F$aXOS  
Change in Focus                :       1.018470 H,K`6HH  
      3     0.44510003    -0.09893230 b-%l-u  
Change in Focus                :      -0.601922 K*+6`z#fMF  
      4     0.18154684    -0.36248550 L!y"d!6C  
Change in Focus                :       0.920681 ;4kT?3$l  
      5     0.28665820    -0.25737414 N|Habua<Xw  
Change in Focus                :       1.253875 B}\BeFt'  
      6     0.21263372    -0.33139862 E1(1E?}!  
Change in Focus                :      -0.903878 -_>.f(1  
      7     0.40051424    -0.14351809 vD26;S.y[a  
Change in Focus                :      -1.354815 "~\*If  
      8     0.48754161    -0.05649072 :1_mfX  
Change in Focus                :       0.215922 (Ilsk{aB;A  
      9     0.40357468    -0.14045766 vpLMhf`  
Change in Focus                :       0.281783 _#pnjo  
     10     0.26315315    -0.28087919 %l|\of7P2}  
Change in Focus                :      -1.048393 #>[wD#XJV  
     11     0.26120585    -0.28282649 G~!C=l  
Change in Focus                :       1.017611 l$M +.GB<  
     12     0.24033815    -0.30369419 AC4 l<:Yh  
Change in Focus                :      -0.109292 bEI!Ja  
     13     0.37164046    -0.17239188 U^?= 0+  
Change in Focus                :      -0.692430 (U9a@1  
     14     0.48597489    -0.05805744 3U;1D2"AE  
Change in Focus                :      -0.662040 e U;jP]FA  
     15     0.21462327    -0.32940907 Y/lN@  
Change in Focus                :       1.611296 ti9}*8  
     16     0.43378226    -0.11025008 P%)b+H{$h  
Change in Focus                :      -0.640081 <L&eh&4c  
     17     0.39321881    -0.15081353 hW' H
T  
Change in Focus                :       0.914906 '9q6aM/&  
     18     0.20692530    -0.33710703 m UgRm]  
Change in Focus                :       0.801607 z_l. V/G)  
     19     0.51374068    -0.03029165 k ,fTW^?  
Change in Focus                :       0.947293 HJ@5B"  
     20     0.38013374    -0.16389860 lRND  
Change in Focus                :       0.667010 (oYW]c}G,  
\_U*t!  
Number of traceable Monte Carlo files generated: 20 *Hu
np Y  
ug&92Hdvy3  
Nominal     0.54403234 XA3s],Rk  
Best        0.54384387    Trial     2 SdI1}&  
Worst       0.18154684    Trial     4 w~N-W8xNR  
Mean        0.35770970 _]o5R7[MQ  
Std Dev     0.11156454 X4
Xf2aXI  
o5 WW{)Q  
hk;bk?:m  
Compensator Statistics: t?3BCm$Mi  
Change in back focus: HcO5?{2  
Minimum            :        -1.354815 f:vD`Fz1  
Maximum            :         1.611296 yekRwo|  
Mean               :         0.161872 ps+:</;Z  
Standard Deviation :         0.869664 [`n
Y2[A$  
F$yeF^\g  
90% >       0.20977951               q%S8\bt  
80% >       0.22748071               I
?M@5u  
50% >       0.38667627               J"&y|;G  
20% >       0.46553746               N^J*!]|  
10% >       0.50064115                &t6Tcy  
";dU-\3M  
End of Run. fU ={a2  
oMc1:=EG  
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~NYU  

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 VDiOO  
2AK}D%jfc  
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                 +{*)}[w{x  
80% >       0.22748071                 R@$+t:}  
50% >       0.38667627                 /.@x 4cdS  
20% >       0.46553746                 #ovM(Mld  
10% >       0.50064115 t= *Jg/$  
:D4];d>1  
最后这个数值是MTF值呢，还是MTF的公差？ PW)8aLU  
pN+I]NgQ  
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？？？   #JFYws  
TrQm]9@  
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  : }\>+H  
90% >       0.20977951                 x\6];SXX  
80% >       0.22748071                 "cNg:  
50% >       0.38667627                 & \JLTw  
20% >       0.46553746                 xUIvLH=  
10% >       0.50064115 #jOOsfH|k  
....... +)?,{eE|  

'frWu6]< 4  
(x}A_i  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   04P.p6  
Mode                : Sensitivities h]<GTWj  
Sampling            : 2 1X[73  
Nominal Criterion   : 0.54403234 3T"2S[gT  
Test Wavelength     : 0.6328 uijq@yo8-  
JvKO $^  
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？ EV:_Kx8fP  
rH[5~U  
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