[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 QH]G>+LI5  
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然后添加了默认公差分析，基本没变 |OarE2  
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然后运行分析的结果如下： 8F(Vd99I  
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Analysis of Tolerances zh60b{  
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File : E:\光学设计资料\zemax练习\f500.ZMX Hi5}s  
Title: W%,h{  
Date : TUE JUN 21 2011 E!SxO~  
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Units are Millimeters. RX6s[uQ  
All changes are computed using linear differences. _ giZ'&l!  
>/eV4ma"  
Paraxial Focus compensation only. )Co&(;zf  
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WARNING: Solves should be removed prior to tolerancing. 66jL2XU<  
k}tTl 2  
Mnemonics: Fmo^ ?~b  
TFRN: Tolerance on curvature in fringes. z(
$h7TZ$  
TTHI: Tolerance on thickness. zmdu\:_X9  
TSDX: Tolerance on surface decentering in x. ,lUr[xzV  
TSDY: Tolerance on surface decentering in y. xTV3U9 v  
TSTX: Tolerance on surface tilt in x (degrees). [:xpz,  
TSTY: Tolerance on surface tilt in y (degrees). b$O1I[o  
TIRR: Tolerance on irregularity (fringes). GDBxciv  
TIND: Tolerance on Nd index of refraction. 2,bLEhu  
TEDX: Tolerance on element decentering in x. s
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TEDY: Tolerance on element decentering in y. ek9Y9eJ"  
TETX: Tolerance on element tilt in x (degrees). DuzJQSv  
TETY: Tolerance on element tilt in y (degrees). aNxq_pRb  
} 0^wJs  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. \&#pJBBG  
~SD8#;v2  
WARNING: Boundary constraints on compensators will be ignored. 530Z>q  
=bDy :yY}  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm ?Gr2@,jlD  
Mode                : Sensitivities k6|wiSyu  
Sampling            : 2 5$;#=WAY  
Nominal Criterion   : 0.54403234 f.X<Mo  
Test Wavelength     : 0.6328 gxf{/EjH  
O77bm,E  
SZ)AO8&  
Fields: XY Symmetric Angle in degrees (I7s[
 
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY t;2\(_A  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 fAHf}
j  
I%qZMoS1h  
Sensitivity Analysis: OqNtTk+  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| z3+7gp+I;  
Type                      Value      Criterion        Change          Value      Criterion        Change m.0:
R  
Fringe tolerance on surface 1 Tu*"+*r>s  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 hNWZ1r~_  
Change in Focus                :      -0.000000                            0.000000 \cKY
{(E  
Fringe tolerance on surface 2 {=)g?!zC  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ICxj$b  
Change in Focus                :       0.000000                            0.000000 !\RBOdw C  
Fringe tolerance on surface 3 +#Q\;;FNP  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 {!G  
Change in Focus                :      -0.000000                            0.000000 5:W5@e{  
Thickness tolerance on surface 1 ugT;NB  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 8kA2.pIk  
Change in Focus                :       0.000000                            0.000000 8a}et8df:  
Thickness tolerance on surface 2 B>=NE.ulUL  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 -Nn@c|fz  
Change in Focus                :       0.000000                           -0.000000 Z&w/JP?  
Decenter X tolerance on surfaces 1 through 3 Yfotq9.=+  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 QgZ`~  
Change in Focus                :       0.000000                            0.000000 _RI!Z   
Decenter Y tolerance on surfaces 1 through 3 A\IQM^i  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 riuG,$
EX  
Change in Focus                :       0.000000                            0.000000 Rx\.x? &  
Tilt X tolerance on surfaces 1 through 3 (degrees) l%^VBv> 2  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 d=J$H<  
Change in Focus                :       0.000000                            0.000000 g.9:R=JPT  
Tilt Y tolerance on surfaces 1 through 3 (degrees) Nu]&?  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 BXx0Z %e.3  
Change in Focus                :       0.000000                            0.000000 R<-u`uXnP  
Decenter X tolerance on surface 1 #MwNyZ  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 4x;vn8yh  
Change in Focus                :       0.000000                            0.000000 `Fn6*_n  
Decenter Y tolerance on surface 1 G{C27k>wa  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 czH`a=mjH  
Change in Focus                :       0.000000                            0.000000 Yc]  
Tilt X tolerance on surface (degrees) 1 .>A`FqV$~+  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 k_$9cVA  
Change in Focus                :       0.000000                            0.000000 ]u\K}n6[q  
Tilt Y tolerance on surface (degrees) 1 1>wQ&{  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ;3 |Z}P  
Change in Focus                :       0.000000                            0.000000 H)u<$y!8  
Decenter X tolerance on surface 2 pD)$
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TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 V_.n G;  
Change in Focus                :       0.000000                            0.000000 /-_<RQ  
Decenter Y tolerance on surface 2 {TV6eV  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 XX])B%*  
Change in Focus                :       0.000000                            0.000000 Ait3KIJ9  
Tilt X tolerance on surface (degrees) 2 _U%fD|t  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 g*uo2-MN&e  
Change in Focus                :       0.000000                            0.000000 'c")]{  
Tilt Y tolerance on surface (degrees) 2 L4wKG&  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ~ R:=zGDV  
Change in Focus                :       0.000000                            0.000000 4Z"JC9As  
Decenter X tolerance on surface 3 3$E\B=7/U  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 )C0dN>Gb  
Change in Focus                :       0.000000                            0.000000 p~h)@  
Decenter Y tolerance on surface 3 afJ`1l  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 iCK p"(kf  
Change in Focus                :       0.000000                            0.000000 Ry+Ax4#+(y  
Tilt X tolerance on surface (degrees) 3 NE'4atQ|  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 w)u6J,  
Change in Focus                :       0.000000                            0.000000 equTKM  
Tilt Y tolerance on surface (degrees) 3 spVE'"^  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 F_ Cp,  
Change in Focus                :       0.000000                            0.000000 2G4OK7x  
Irregularity of surface 1 in fringes >gqd y*Bg  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 7j <:hF~  
Change in Focus                :       0.000000                            0.000000 /6$8djw  
Irregularity of surface 2 in fringes ZV?~~_9  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 uBPxMwohR  
Change in Focus                :       0.000000                            0.000000 9)Jc'd|  
Irregularity of surface 3 in fringes JkiMrpkuk  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 zURob MpE#  
Change in Focus                :       0.000000                            0.000000 ^9g+\W  
Index tolerance on surface 1 VXpbmg!{S  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 R>05MhA+  
Change in Focus                :       0.000000                            0.000000 [nBd
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Index tolerance on surface 2 qxR7;/@j)  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 p%_m
!   
Change in Focus                :       0.000000                           -0.000000 g'F{;Ur  
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Worst offenders: %^r}$mfy:0  
Type                      Value      Criterion        Change G31??L:<  
TSTY   2            -0.20000000     0.35349910    -0.19053324 #t^y$9^  
TSTY   2             0.20000000     0.35349910    -0.19053324 PN$vBFjm  
TSTX   2            -0.20000000     0.35349910    -0.19053324 tBZ&h` V  
TSTX   2             0.20000000     0.35349910    -0.19053324 4IW7^Pq`P  
TSTY   1            -0.20000000     0.42678383    -0.11724851
:Ur=}@Dj  
TSTY   1             0.20000000     0.42678383    -0.11724851 m)]A$*`<  
TSTX   1            -0.20000000     0.42678383    -0.11724851 @7C?]/8#  
TSTX   1             0.20000000     0.42678383    -0.11724851 QnWM<6xK"  
TSTY   3            -0.20000000     0.42861670    -0.11541563 }.uB6&!:  
TSTY   3             0.20000000     0.42861670    -0.11541563 RH=Tu6i  
) ag8]   
Estimated Performance Changes based upon Root-Sum-Square method: )Apg  
Nominal MTF                 :     0.54403234 @y#QH
J.j  
Estimated change            :    -0.36299231 .7!n%Ks  
Estimated MTF               :     0.18104003 Ot]Y/;K  
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Compensator Statistics: C#y[UM5\k;  
Change in back focus: LHt{y3l]  
Minimum            :        -0.000000 eTV%+  
Maximum            :         0.000000 r dc}e"v  
Mean               :        -0.000000 /Ww_
fY  
Standard Deviation :         0.000000 ]T3dZ`-(  
j70]2NgX  
Monte Carlo Analysis: /p=9"?  
Number of trials: 20
6+:Tv2  
T%%+v#+  
Initial Statistics: Normal Distribution _Gpq=(q
)  
!_EaF`oh(  
  Trial       Criterion        Change tPT\uD#t  
      1     0.42804416    -0.11598818 @Gs*y1  
Change in Focus                :      -0.400171 X>n\@rTo  
      2     0.54384387    -0.00018847 =-ky%3:`@  
Change in Focus                :       1.018470 T@n-^B!Xq  
      3     0.44510003    -0.09893230 &*I\~;1  
Change in Focus                :      -0.601922 F^m`j6  
      4     0.18154684    -0.36248550 Al^n&Aa+\  
Change in Focus                :       0.920681 $uA?c& e  
      5     0.28665820    -0.25737414 q+MV@8w  
Change in Focus                :       1.253875 PgKA>50a  
      6     0.21263372    -0.33139862 P(_wT:8C
?  
Change in Focus                :      -0.903878 kp4*|$]  
      7     0.40051424    -0.14351809 5a
F0
3+ko  
Change in Focus                :      -1.354815 4{:W5eT!/  
      8     0.48754161    -0.05649072 5$r`e+Nf'  
Change in Focus                :       0.215922 -X
VC,.Ly  
      9     0.40357468    -0.14045766 AnbY<&OC1  
Change in Focus                :       0.281783 B%v2)+?@  
     10     0.26315315    -0.28087919 3~e"CKD>  
Change in Focus                :      -1.048393 <p48?+K9  
     11     0.26120585    -0.28282649 [e2sUO0~
r  
Change in Focus                :       1.017611 p< fKj  
     12     0.24033815    -0.30369419 @quNVx(y  
Change in Focus                :      -0.109292 2V}tDN7c  
     13     0.37164046    -0.17239188 O7#ECUH  
Change in Focus                :      -0.692430 &&0,;r,-)  
     14     0.48597489    -0.05805744 Xd_86q8o  
Change in Focus                :      -0.662040  [69[
Ct  
     15     0.21462327    -0.32940907 C043h?x  
Change in Focus                :       1.611296 :*bmc/c  
     16     0.43378226    -0.11025008 *E<%db C2  
Change in Focus                :      -0.640081 YfC1.8  
     17     0.39321881    -0.15081353 $XFiH~GI  
Change in Focus                :       0.914906 {Gnji] v  
     18     0.20692530    -0.33710703 |kvom 4T  
Change in Focus                :       0.801607 [)}F4Jsz%  
     19     0.51374068    -0.03029165 Hno:"k?  
Change in Focus                :       0.947293 O a_2J#~$  
     20     0.38013374    -0.16389860 (k9{&mPJ  
Change in Focus                :       0.667010 6V=69}  
q$EicH}k8  
Number of traceable Monte Carlo files generated: 20 Epm\=s  
*P_ 3A:_  
Nominal     0.54403234 6i/x"vl>  
Best        0.54384387    Trial     2 h+k:G9;sS  
Worst       0.18154684    Trial     4 x+zz:^yHYf  
Mean        0.35770970 T}(J`{9i  
Std Dev     0.11156454 N|c;Qzl
 
@[0zZX2EE  
tBgB>-h(  
Compensator Statistics: ,?GEL>F  
Change in back focus: i,R<`K0  
Minimum            :        -1.354815 I_mnXd;n  
Maximum            :         1.611296 ylF%6!V}4V  
Mean               :         0.161872 -LL49P6  
Standard Deviation :         0.869664 VnUWUIVJ  
=6b^j]1  
90% >       0.20977951               ^[}^+  
80% >       0.22748071               <d,Qi.G4  
50% >       0.38667627               i]8HzKuiW  
20% >       0.46553746               c>~"Z-VtX  
10% >       0.50064115                dxkq*  

ANEW^\  
End of Run. A-\OB Nh  
B&&:A4  
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 Hu|;cbK  
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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 5v4 ,YHD  
!(PAUWS@  
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                 m[6?v;w  
80% >       0.22748071                 v0)I rO  
50% >       0.38667627                 $eUI.j(HU  
20% >       0.46553746                 2TB>d+  
10% >       0.50064115 pEf1[ z
q  
5[3vup?  
最后这个数值是MTF值呢，还是MTF的公差？ Vvk1 D(  
x5[wF6A  
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？？？   bK:mt`  
NO5\|.,Z  
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  : 4v[Zhf4JM  
90% >       0.20977951                 @J~hi\&`  
80% >       0.22748071                 vca]yK<u  
50% >       0.38667627                 C?OqS+  
20% >       0.46553746                 -!Ov{GHr0  
10% >       0.50064115 _z6_mmMp  
....... +g.lLb*#  

Cpg>5N~;L  
QVT|6znw  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   UiE 1TD{  
Mode                : Sensitivities [H4)p ,R  
Sampling            : 2 Y'&rSHI"  
Nominal Criterion   : 0.54403234 cPp<+ ts  
Test Wavelength     : 0.6328 qT153dNA&  
%M7EOa  
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？ [sc4ULS &  
)<K3Fz Bs  
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