[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 ?ix0n,m  
w&:h^u  
YM+}Mmu  
-^\k+4
;  
然后添加了默认公差分析，基本没变 q`9~F4\  
%aL>n=$  
#BlH)Cv  
q)<5&|V  
然后运行分析的结果如下： |FPx8b;#  
3=sA]j-+(  
Analysis of Tolerances Fk=_Q LI  
P{QRmEE  
File : E:\光学设计资料\zemax练习\f500.ZMX Mk,8v],-Tj  
Title: 2MB\!fh  
Date : TUE JUN 21 2011 b^hCm`2w*  
Z2*hQ`eE  
Units are Millimeters. +=u*!6S  
All changes are computed using linear differences. 8*6J\FE<p  
.
$v]Bxu  
Paraxial Focus compensation only. d'Gv\i&e  
3S'V>:  
WARNING: Solves should be removed prior to tolerancing. fa5($jJ&  
If!0w ;h  
Mnemonics: De:w(Rm  
TFRN: Tolerance on curvature in fringes. v`beql  
TTHI: Tolerance on thickness. $V`O%Sz  
TSDX: Tolerance on surface decentering in x. B;W=61d  
TSDY: Tolerance on surface decentering in y. Z4hP  
TSTX: Tolerance on surface tilt in x (degrees). as o8  
TSTY: Tolerance on surface tilt in y (degrees). >k_Z]J6Pd  
TIRR: Tolerance on irregularity (fringes). WMh'<'wN_  
TIND: Tolerance on Nd index of refraction. j] M)i:n  
TEDX: Tolerance on element decentering in x. pok,`yW\  
TEDY: Tolerance on element decentering in y. ufEt"P-X.  
TETX: Tolerance on element tilt in x (degrees). 8 _`Lx_R  
TETY: Tolerance on element tilt in y (degrees). ;J?^M!l2=  
/:awPYGH<1  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. @$+l ^"#-]  
FopD/D{  
WARNING: Boundary constraints on compensators will be ignored. ~}4H=[Zu  
s
Pc\xY  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm B#EF/\5  
Mode                : Sensitivities 36Wuc@<H  
Sampling            : 2 _;LH
C;,:  
Nominal Criterion   : 0.54403234 9Cf^Q3)5o  
Test Wavelength     : 0.6328 #Kn7 xn[  
hh:)"<[  
ax7 M  
Fields: XY Symmetric Angle in degrees "lN<v=  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 1Rp|*>  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 )](8{}wo  
iCv &<C@  
Sensitivity Analysis: K<+AJ(C  
 pLyX9C  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| TU[f"!z^  
Type                      Value      Criterion        Change          Value      Criterion        Change _DJ0MR~3  
Fringe tolerance on surface 1 \?qXscq  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 8 LaZ5  
Change in Focus                :      -0.000000                            0.000000 G ROl9xp2  
Fringe tolerance on surface 2 rM>&!?y+  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 `I m;@_J  
Change in Focus                :       0.000000                            0.000000 JmN;v|wF:c  
Fringe tolerance on surface 3 XTZWbhNF  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 uLL#(bhDr  
Change in Focus                :      -0.000000                            0.000000 A9tQb:  
Thickness tolerance on surface 1 bdcuO)3  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 zWjGGTP~3&  
Change in Focus                :       0.000000                            0.000000 hk,Q=};  
Thickness tolerance on surface 2 )]qFI"B7  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Y|B/(  
Change in Focus                :       0.000000                           -0.000000 nMVThN*Ig  
Decenter X tolerance on surfaces 1 through 3 }T(|\ X  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 eh)J'G]G  
Change in Focus                :       0.000000                            0.000000 t.

knYO)  
Decenter Y tolerance on surfaces 1 through 3 R9=,T0Y p  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ={feN L  
Change in Focus                :       0.000000                            0.000000 dm,bZHo  
Tilt X tolerance on surfaces 1 through 3 (degrees) "?avb`YU'  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 $L`7(0U-  
Change in Focus                :       0.000000                            0.000000 %Yd}},X_E  
Tilt Y tolerance on surfaces 1 through 3 (degrees) mX|AptND  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 QAb[M\G  
Change in Focus                :       0.000000                            0.000000 8q tNK>D  
Decenter X tolerance on surface 1 "aa6W  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 1 !\pwd@{  
Change in Focus                :       0.000000                            0.000000 -@J;FjrXmP  
Decenter Y tolerance on surface 1 IOmIkx&`GP  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 cwpDad[Kx  
Change in Focus                :       0.000000                            0.000000 da[l[b;  
Tilt X tolerance on surface (degrees) 1 %LVk%kz  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 E176O[(V=  
Change in Focus                :       0.000000                            0.000000 {z.}u5N
 
Tilt Y tolerance on surface (degrees) 1 Ogjjjy84vM  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 5#2vSq!H  
Change in Focus                :       0.000000                            0.000000 ;#Mq=Fr-SG  
Decenter X tolerance on surface 2 MGmtA(  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 +Z{4OJK  
Change in Focus                :       0.000000                            0.000000 y>~KeUC  
Decenter Y tolerance on surface 2 f-{[ushj  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 1W/= =+%I  
Change in Focus                :       0.000000                            0.000000 =,0E3:X^  
Tilt X tolerance on surface (degrees) 2 SH`
"o  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 !J:DBtGT  
Change in Focus                :       0.000000                            0.000000 LI nN-b#  
Tilt Y tolerance on surface (degrees) 2 xaeY^"L  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 UiYA#m  
Change in Focus                :       0.000000                            0.000000 *dKA/.g  
Decenter X tolerance on surface 3 (U7%Z<  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 jR/X}XQtY  
Change in Focus                :       0.000000                            0.000000 7q67_u?@  
Decenter Y tolerance on surface 3 uF^+}Y ZT  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 qC3 rHT]  
Change in Focus                :       0.000000                            0.000000 xH'H! 8  
Tilt X tolerance on surface (degrees) 3 47icy-@kg  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 m,.d< **  
Change in Focus                :       0.000000                            0.000000 k| jCc  
Tilt Y tolerance on surface (degrees) 3 ~F' $p  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 "3hw]`a}  
Change in Focus                :       0.000000                            0.000000 W)9KYI9u  
Irregularity of surface 1 in fringes FlkAo]  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 o oS4F1ta  
Change in Focus                :       0.000000                            0.000000
PGw"\-F  
Irregularity of surface 2 in fringes 0{B5C[PTG  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 i_=P!%,  
Change in Focus                :       0.000000                            0.000000 s]2k@3|e  
Irregularity of surface 3 in fringes GN~:rdd  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 S$$:G$j  
Change in Focus                :       0.000000                            0.000000 U2Ur N?T  
Index tolerance on surface 1 @:c
 1+  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 1DLQZq  
Change in Focus                :       0.000000                            0.000000 zJx<]=]  
Index tolerance on surface 2 [M;P:
@  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 goHr#@  
Change in Focus                :       0.000000                           -0.000000 lI5{]?'  
cAiIbh>c  
Worst offenders: 1-qQp.Wj  
Type                      Value      Criterion        Change 4XKg3l1  
TSTY   2            -0.20000000     0.35349910    -0.19053324 0`S!+d  
TSTY   2             0.20000000     0.35349910    -0.19053324 G A7  
TSTX   2            -0.20000000     0.35349910    -0.19053324 ^#Wf  
TSTX   2             0.20000000     0.35349910    -0.19053324 d[o =  
TSTY   1            -0.20000000     0.42678383    -0.11724851 aG"UV\  
TSTY   1             0.20000000     0.42678383    -0.11724851 (JM4W "7'  
TSTX   1            -0.20000000     0.42678383    -0.11724851 i"-#1vy=  
TSTX   1             0.20000000     0.42678383    -0.11724851 Gpgi@ Uf  
TSTY   3            -0.20000000     0.42861670    -0.11541563 x[>A'.m@)  
TSTY   3             0.20000000     0.42861670    -0.11541563 ]&9f:5',  
:s$9#}hw,  
Estimated Performance Changes based upon Root-Sum-Square method: )v|a:'%K_  
Nominal MTF                 :     0.54403234 T}\U:@b  
Estimated change            :    -0.36299231 G;^iwxzhO  
Estimated MTF               :     0.18104003 4bJ3uIP#  
WUHx0I  
Compensator Statistics: .KB*u*h  
Change in back focus: YqDw*S{  
Minimum            :        -0.000000 3s|tS2^4  
Maximum            :         0.000000 fO:*85%}7  
Mean               :        -0.000000 _QErQ^`  
Standard Deviation :         0.000000 f?{Y<M~]  
F.\]Hqq  
Monte Carlo Analysis: nTHP~]  
Number of trials: 20 4$|G$h  
9Qkww&VEk  
Initial Statistics: Normal Distribution Et- .[  
l'o}4am  
  Trial       Criterion        Change Y8AU<M  
      1     0.42804416    -0.11598818 /g8yc'{p  
Change in Focus                :      -0.400171 .&[nS<~`  
      2     0.54384387    -0.00018847 L@2H>Lh35  
Change in Focus                :       1.018470 ZPMEN,Dw  
      3     0.44510003    -0.09893230 Bf-&[ 5N}  
Change in Focus                :      -0.601922 nY*OD
L  
      4     0.18154684    -0.36248550 *3k~%RM%?  
Change in Focus                :       0.920681 V3`*LU  
      5     0.28665820    -0.25737414 PD$'xY|1=  
Change in Focus                :       1.253875 cX&c%~  
      6     0.21263372    -0.33139862 =-:o?&64  
Change in Focus                :      -0.903878 v |i(peA#  
      7     0.40051424    -0.14351809 WK=!<FsC$  
Change in Focus                :      -1.354815 fe Q%L  
      8     0.48754161    -0.05649072 <<`."RY#0  
Change in Focus                :       0.215922 '<Vvv^Er  
      9     0.40357468    -0.14045766 9u)h$VC  
Change in Focus                :       0.281783 M9N|Ql  
     10     0.26315315    -0.28087919 2+^#<Uok  
Change in Focus                :      -1.048393 |4'E&(BU-  
     11     0.26120585    -0.28282649 tl4;2m3w  
Change in Focus                :       1.017611 7v
?Ygtv  
     12     0.24033815    -0.30369419 x/Ds`\  
Change in Focus                :      -0.109292 q&N&n%rbm  
     13     0.37164046    -0.17239188 *".7O*jjV  
Change in Focus                :      -0.692430 Dho~6K}"  
     14     0.48597489    -0.05805744 eR}d"F4W  
Change in Focus                :      -0.662040 I%(+tJ  
     15     0.21462327    -0.32940907 NKMB,b  
Change in Focus                :       1.611296 c'(]n]a%  
     16     0.43378226    -0.11025008 r|#4+'  
Change in Focus                :      -0.640081  <Nw?9P  
     17     0.39321881    -0.15081353 $DQ -.WI  
Change in Focus                :       0.914906 a{8GT2h`4  
     18     0.20692530    -0.33710703 mDq01fU4  
Change in Focus                :       0.801607 '}
OrFN  
     19     0.51374068    -0.03029165 Uvuvr_IP  
Change in Focus                :       0.947293 ~k J#IA  
     20     0.38013374    -0.16389860 : i(h[0  
Change in Focus                :       0.667010 LCdc7  
wY=ky629  
Number of traceable Monte Carlo files generated: 20 )Q\;N C=4  
ud.S, 8Sy  
Nominal     0.54403234 J:Qp(s-N^:  
Best        0.54384387    Trial     2 :wF(([&4p!  
Worst       0.18154684    Trial     4 Fdzd!r1 v  
Mean        0.35770970 N@)g3mX>  
Std Dev     0.11156454 TJVNR_x  
eHjR/MMr_  
%TR->F  
Compensator Statistics: 7.=u:PK7kM  
Change in back focus: g\^(>Ouc  
Minimum            :        -1.354815 C :e 'wmA  
Maximum            :         1.611296 9~4Kbmr>q  
Mean               :         0.161872 z1L.  
Standard Deviation :         0.869664 &,#VhT![  
`P GWu1/  
90% >       0.20977951               \/,SH?>4x  
80% >       0.22748071               P EbB0GL  
50% >       0.38667627               'LX=yL]I  
20% >       0.46553746               B8P%4@T  
10% >       0.50064115                Vk-_v5  
;lK2]  
End of Run. [Y:HVr,  
4RzG3CJdS  
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 n =v %}@f2  
iCc\p2p  
{jv1hKTa  
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 jb*#!m.l  
B(>_.x#kv  
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                 .K0BK)axO  
80% >       0.22748071                 .3Ap+V8?  
50% >       0.38667627                 !cq4+0{O;&  
20% >       0.46553746                 P_Zo}.{  
10% >       0.50064115 9V;m;sz  
G(4k#jB  
最后这个数值是MTF值呢，还是MTF的公差？ 00Rk%QV  
?@u &3/&  
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？？？   j^k{~]+_^]  
?^7
~|?v  
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!6_'d  
90% >       0.20977951                 %++q+pa  
80% >       0.22748071                 ]__M*  
50% >       0.38667627                 6Y=$7%z  
20% >       0.46553746                 4~ iKo  
10% >       0.50064115 i\3
`?d  
....... ?2i``-|Wa  

v<c8qg  
*AJW8tIP  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   8'f:7KF  
Mode                : Sensitivities Xl}>mbB  
Sampling            : 2 Dl7#h,GTc<  
Nominal Criterion   : 0.54403234 .-o$IQsS  
Test Wavelength     : 0.6328 bclA+!1  
_kar5B$  
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？ z;Kyg}  
aiz_6@Qfz*  
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