[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 IvQuxs&a  
`RURC"  

图片:1.JPG

B2_fCSlg  
5BLBcw\;  
然后添加了默认公差分析，基本没变 gth_Sz5!#  
"5N$u(: b  

图片:2.jpg

&"Cy&[  
)`W|J%w+  
然后运行分析的结果如下：  =mcQe^M  
+Qzl-eN/+  
Analysis of Tolerances 4v5qK  
vs$
.i  
File : E:\光学设计资料\zemax练习\f500.ZMX /Gb)BJk!  
Title: pR`nQM-D  
Date : TUE JUN 21 2011 )N3/;U;  
j2:9ahW  
Units are Millimeters. v-!Spf  
All changes are computed using linear differences. td$RDtW[3  
r@'
~cF]m  
Paraxial Focus compensation only. /a-s9<  
$kR%G{j 4  
WARNING: Solves should be removed prior to tolerancing. &!'R'{/?X  
@l_rB~  
Mnemonics: mL;oR4{  
TFRN: Tolerance on curvature in fringes. `tKs|GQf  
TTHI: Tolerance on thickness. Rf=-Q %  
TSDX: Tolerance on surface decentering in x. -J]N &[  
TSDY: Tolerance on surface decentering in y. SD:Bw0gzrI  
TSTX: Tolerance on surface tilt in x (degrees). fL'Ci;.;+  
TSTY: Tolerance on surface tilt in y (degrees). @K#}nKN'  
TIRR: Tolerance on irregularity (fringes). mpIR: Im  
TIND: Tolerance on Nd index of refraction. 7o*~zDh@fH  
TEDX: Tolerance on element decentering in x. ~ `{{Z&  
TEDY: Tolerance on element decentering in y. ?g*.
7Wc  
TETX: Tolerance on element tilt in x (degrees). wYv++< z  
TETY: Tolerance on element tilt in y (degrees). 4VsttT  
pVjOp~=U  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. =6fJUy^M\  
*
J4\KU  
WARNING: Boundary constraints on compensators will be ignored. =|^R<#%/  
?c fFJl  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 0NvicZ7VR  
Mode                : Sensitivities vr kj4Jf  
Sampling            : 2 bQ0+Y?,+/  
Nominal Criterion   : 0.54403234 ^Vc(oa&;  
Test Wavelength     : 0.6328 a?W<<9]  
+J42pSxzoo  
z<.6jx@  
Fields: XY Symmetric Angle in degrees J~ z00p`E  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY uXG$YDKqC  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 HMKogGTTo  
S[&yO-=p6  
Sensitivity Analysis: b'`C<Rk  
w,!N{hv(  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| q((%sWp  
Type                      Value      Criterion        Change          Value      Criterion        Change eh
Mpo BL  
Fringe tolerance on surface 1 %wJ?+D/  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 /(}YjeS  
Change in Focus                :      -0.000000                            0.000000 2jP(D%n  
Fringe tolerance on surface 2 G/1V4-@  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ]0}NF  
Change in Focus                :       0.000000                            0.000000 r|953e  
Fringe tolerance on surface 3 `Q>qmf_Fi  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 .SWn/Kk  
Change in Focus                :      -0.000000                            0.000000 ,LU|WXRB  
Thickness tolerance on surface 1 a3 t||@v!  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 2>^jMln  
Change in Focus                :       0.000000                            0.000000 ]4\6_J&  
Thickness tolerance on surface 2 3X`N~_+  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 +\cG{n*  
Change in Focus                :       0.000000                           -0.000000 '|yBz1uL  
Decenter X tolerance on surfaces 1 through 3 G98fBw  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 `4qtmbj  
Change in Focus                :       0.000000                            0.000000 PiNf;b^
9  
Decenter Y tolerance on surfaces 1 through 3 ?y[i6yN9  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ng[LSB*57Y  
Change in Focus                :       0.000000                            0.000000 o4B%TW  
Tilt X tolerance on surfaces 1 through 3 (degrees) ipRH.1=  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 *Oh]I|?  
Change in Focus                :       0.000000                            0.000000 z&.F YGq}  
Tilt Y tolerance on surfaces 1 through 3 (degrees) <M,=(p{  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 +3R/g@n  
Change in Focus                :       0.000000                            0.000000 [ofZ1hB4  
Decenter X tolerance on surface 1 yV)9KGV+:  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 {>X2\.Rl  
Change in Focus                :       0.000000                            0.000000 !WD^To  
Decenter Y tolerance on surface 1 mr XmM<  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ^`9O$.'@  
Change in Focus                :       0.000000                            0.000000 I-/
-k.  
Tilt X tolerance on surface (degrees) 1 qI2&a$Zb$  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 wJWofFz  
Change in Focus                :       0.000000                            0.000000 *MXE>  
Tilt Y tolerance on surface (degrees) 1 Y0o{@)Y:  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 90a!_8o  
Change in Focus                :       0.000000                            0.000000 -9q3]nmT(  
Decenter X tolerance on surface 2 W;P8'_2Y  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ^ `[T0X  
Change in Focus                :       0.000000                            0.000000 sN/8OLc  
Decenter Y tolerance on surface 2 ~<3J9\z1  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Es1T{<G|w  
Change in Focus                :       0.000000                            0.000000 p!`S]\XEB  
Tilt X tolerance on surface (degrees) 2 iz6+jHu'l  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 mfgUf  
Change in Focus                :       0.000000                            0.000000 B5#>ieM*  
Tilt Y tolerance on surface (degrees) 2 i#Z#(D `m  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 JuRx>F4  
Change in Focus                :       0.000000                            0.000000 4 :M}Vz-  
Decenter X tolerance on surface 3 3'tq`t:SQ  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 E qt\It9  
Change in Focus                :       0.000000                            0.000000 yO J|t#  
Decenter Y tolerance on surface 3 {$_Gjv  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Q.l3F3;  
Change in Focus                :       0.000000                            0.000000 W!b'nRkq  
Tilt X tolerance on surface (degrees) 3 tAS[T9B  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 rCdTn+O2  
Change in Focus                :       0.000000                            0.000000 ?#/~BZR!  
Tilt Y tolerance on surface (degrees) 3 I=4G+h5p  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 XWUi_{zn  
Change in Focus                :       0.000000                            0.000000 LP//\E_]  
Irregularity of surface 1 in fringes b}m@2DR'|m  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 RnUud\T/  
Change in Focus                :       0.000000                            0.000000 249DAjn+  
Irregularity of surface 2 in fringes d+IN-lR(  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 _#6*C%ax  
Change in Focus                :       0.000000                            0.000000 ,o6,(jJU  
Irregularity of surface 3 in fringes HurF4IsHk  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 l\{r-F N  
Change in Focus                :       0.000000                            0.000000 VJ-To}  
Index tolerance on surface 1 iY3TB|tMt  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 XGDJCN  
Change in Focus                :       0.000000                            0.000000 "V<7X%LIX  
Index tolerance on surface 2 S+-V16{i  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 'M%uw85  
Change in Focus                :       0.000000                           -0.000000 g"X!&$
&  
Q6%Pp_$k  
Worst offenders: &B} ,xcNO  
Type                      Value      Criterion        Change LOe l6Ui  
TSTY   2            -0.20000000     0.35349910    -0.19053324 ~{{@m]P  
TSTY   2             0.20000000     0.35349910    -0.19053324 Ihx[S!:  
TSTX   2            -0.20000000     0.35349910    -0.19053324 Gs(;&fw  
TSTX   2             0.20000000     0.35349910    -0.19053324 (*V:{_r  
TSTY   1            -0.20000000     0.42678383    -0.11724851 xnC5WF7  
TSTY   1             0.20000000     0.42678383    -0.11724851 \_t[\&.a}  
TSTX   1            -0.20000000     0.42678383    -0.11724851 CjmF2[|  
TSTX   1             0.20000000     0.42678383    -0.11724851 ~.J{yrJ&  
TSTY   3            -0.20000000     0.42861670    -0.11541563 @BI;H V%k  
TSTY   3             0.20000000     0.42861670    -0.11541563 ]?0]K!7Ea  
E[>A# l53  
Estimated Performance Changes based upon Root-Sum-Square method: |:LklpdYe  
Nominal MTF                 :     0.54403234 G$6mtw6[M  
Estimated change            :    -0.36299231 x{$/|_  
Estimated MTF               :     0.18104003 N=c{@h  
7J5Yzu)D  
Compensator Statistics: \kC'y9k  
Change in back focus:  lLNI5C  
Minimum            :        -0.000000 9mB]
\{^  
Maximum            :         0.000000 He}"e&K  
Mean               :        -0.000000 v=x)]<E"_  
Standard Deviation :         0.000000 muIJeQ.C  
ZtX\E
+mC  
Monte Carlo Analysis: (iY2d_FQ[  
Number of trials: 20 ]1|OQYG  
B1z7r0Rm,  
Initial Statistics: Normal Distribution eY3<LVAX  
%H=^U
8WB  
  Trial       Criterion        Change ,?VYrL  
      1     0.42804416    -0.11598818 Ej$oRo{IG  
Change in Focus                :      -0.400171 k~=P0";  
      2     0.54384387    -0.00018847 X@%4N<  
Change in Focus                :       1.018470 qDjH^f  
      3     0.44510003    -0.09893230 G(

#EW+  
Change in Focus                :      -0.601922 sxPvi0>  
      4     0.18154684    -0.36248550 `6pz9j]  
Change in Focus                :       0.920681 @4P_Yfn  
      5     0.28665820    -0.25737414 a#+;BH1  
Change in Focus                :       1.253875 .8]=yPm  
      6     0.21263372    -0.33139862 e J:#vX86  
Change in Focus                :      -0.903878 8hZc#b;  
      7     0.40051424    -0.14351809 <|VV8r93  
Change in Focus                :      -1.354815 5$
/Me=g<  
      8     0.48754161    -0.05649072 @Qd5a(5WM  
Change in Focus                :       0.215922 -z>m]YDH  
      9     0.40357468    -0.14045766 cp4~`X  
Change in Focus                :       0.281783 ,-1d2y  
     10     0.26315315    -0.28087919 ^[1Xl7)`  
Change in Focus                :      -1.048393 A}sdi4[`  
     11     0.26120585    -0.28282649 G+K`FUNA  
Change in Focus                :       1.017611 bJFqyK:6  
     12     0.24033815    -0.30369419 gTg[!}_;\N  
Change in Focus                :      -0.109292 5 $.az  
     13     0.37164046    -0.17239188 [m9=e-KS$Q  
Change in Focus                :      -0.692430 2\G[U#~bi  
     14     0.48597489    -0.05805744 L}>ts(!q&  
Change in Focus                :      -0.662040 "_ON0._(/  
     15     0.21462327    -0.32940907 ._`?ZJ  
Change in Focus                :       1.611296 &8hW~G>(m  
     16     0.43378226    -0.11025008 +(oExp(!  
Change in Focus                :      -0.640081 }XRRM:B|)(  
     17     0.39321881    -0.15081353 QX+&[G!DZH  
Change in Focus                :       0.914906 [`bA,)y"  
     18     0.20692530    -0.33710703 CA,2&v"  
Change in Focus                :       0.801607 ^fti<Lw5  
     19     0.51374068    -0.03029165 %`]fZr A]#  
Change in Focus                :       0.947293 h]k1vp)Q y  
     20     0.38013374    -0.16389860 +e&Q<q!,q  
Change in Focus                :       0.667010 >S:+&VN`M  
'HvJ]}p  
Number of traceable Monte Carlo files generated: 20 >;~ia3  
<Mf(2`T  
Nominal     0.54403234 k~qZ^9QB~  
Best        0.54384387    Trial     2 +xBM\Dz8  
Worst       0.18154684    Trial     4 /mnV$+BE  
Mean        0.35770970 nT@FSt  
Std Dev     0.11156454 mW
H;-F*%  
Ol
*|J  
Zu/1:8x  
Compensator Statistics:
&e5,\TQ  
Change in back focus: V#V<Kz  
Minimum            :        -1.354815 @|@6
pXR.  
Maximum            :         1.611296 g HKA:j`c  
Mean               :         0.161872
me@EKspX  
Standard Deviation :         0.869664 ?wMS[Kj  
3y*dBw  
90% >       0.20977951               A"~Oi  
80% >       0.22748071               M/jdMfU  
50% >       0.38667627               &5R-bYGW  
20% >       0.46553746               l1]'3]P(  
10% >       0.50064115                %DhLU~VX  
PfJfa/#pA  
End of Run. p i\SRDP  
iU4Z9z!  
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 p.!p6ve){  

图片:3.JPG

5} 1qo7;  
tj[-|h  
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 CMHg]la  
0]l9x}  
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                 ()
yOK$"  
80% >       0.22748071                 H]>7IhJ  
50% >       0.38667627                 +!<{80w  
20% >       0.46553746                 mp17d$R-  
10% >       0.50064115 U<U?&hB\@  
l ?gh7m_ej  
最后这个数值是MTF值呢，还是MTF的公差？ 5 OF*PBZ  
luV_  
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？？？   rvBKJ!b0  
Q?-uJ1J  
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  : OX/}j_8E^(  
90% >       0.20977951                 Oz_|pu  
80% >       0.22748071                 J0"<}"  
50% >       0.38667627                 'aW<C>  
20% >       0.46553746                 oFUP`p%[  
10% >       0.50064115 h`$2/%?  
....... <y5f[HjLy  

B$cx '_zF  
p&ml$N9fd  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   y*5bF0  
Mode                : Sensitivities oZ(T`5  
Sampling            : 2 u2xb^vu  
Nominal Criterion   : 0.54403234 \aG:l.IM0  
Test Wavelength     : 0.6328 Qv@Z#  
+k4SN  
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？ Lh5d2}tcO  
?#LbhO*   
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