[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 4 *He<2g  
^SxB b,\  

图片:1.JPG

9%oLv25{)  
vuuID24:  
然后添加了默认公差分析，基本没变 )gvXeJ  
wke
$  

图片:2.jpg

ko im@B  
W2tIt&{  
然后运行分析的结果如下： 9NaC7D$,  
!OPK?7  
Analysis of Tolerances =NAL*4c+  
N_$ X4.7p  
File : E:\光学设计资料\zemax练习\f500.ZMX /+2^xEIjE  
Title: ?ZdHuuDN~  
Date : TUE JUN 21 2011 ~Ht[kO  
&xr?yd  
Units are Millimeters. M^r1b1tR  
All changes are computed using linear differences. C
cgCKT  
LB? evewu  
Paraxial Focus compensation only. zi2hi9A  
gO<>L0,j  
WARNING: Solves should be removed prior to tolerancing. .zlUN0oe  
XIJ>\ RF  
Mnemonics: 3RscuD&  
TFRN: Tolerance on curvature in fringes. |=l;UqB  
TTHI: Tolerance on thickness. Gi]Pwo${  
TSDX: Tolerance on surface decentering in x. }pPxN@X  
TSDY: Tolerance on surface decentering in y. =4 &9!Z  
TSTX: Tolerance on surface tilt in x (degrees). Niou=PI@  
TSTY: Tolerance on surface tilt in y (degrees). y M , hF  
TIRR: Tolerance on irregularity (fringes). T$GhE  
TIND: Tolerance on Nd index of refraction. $tj[*  
TEDX: Tolerance on element decentering in x. 2aW&d=!ZV  
TEDY: Tolerance on element decentering in y. Eo)Q> AM  
TETX: Tolerance on element tilt in x (degrees). [>;U1Wt  
TETY: Tolerance on element tilt in y (degrees). ;*wZgl  
Wxb/|?,  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. O]m,zk  
-}9ZZ#K  
WARNING: Boundary constraints on compensators will be ignored. /V46:`V  
65=i`!f  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm _(<[!c!@0  
Mode                : Sensitivities ocAoqjlT[  
Sampling            : 2 *<xEM-  
Nominal Criterion   : 0.54403234 P et0yH  
Test Wavelength     : 0.6328 /0!6;PC<  
_tb)F"4V  
fph*|T&R  
Fields: XY Symmetric Angle in degrees d;:+Xd`  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY vxZvK0b620  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 7>wSbAR<  
KxGK`'E'r  
Sensitivity Analysis: ,;O+2TX  
tE9%;8;H  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| _yJd@  
Type                      Value      Criterion        Change          Value      Criterion        Change fi:Z*-  
Fringe tolerance on surface 1 opjrU$<]N  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 #";(&|7  
Change in Focus                :      -0.000000                            0.000000 JdfjOlEb  
Fringe tolerance on surface 2 v#(wc+[  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 fHb0pp\[.  
Change in Focus                :       0.000000                            0.000000 u(\b1h n  
Fringe tolerance on surface 3 $vTU|o>|  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 [FAoC3 k-h  
Change in Focus                :      -0.000000                            0.000000 +*DXzVC  
Thickness tolerance on surface 1 %S]5wR6;_  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 |mc!v*O  
Change in Focus                :       0.000000                            0.000000 + 3aAL&  
Thickness tolerance on surface 2 @PU%BKe  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 p(v+j_ak  
Change in Focus                :       0.000000                           -0.000000 i0L)hkV  
Decenter X tolerance on surfaces 1 through 3 :p=IZY  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 1$q S
bQ  
Change in Focus                :       0.000000                            0.000000
*9`@  
Decenter Y tolerance on surfaces 1 through 3 km}%7|R?  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Yr,e7da  
Change in Focus                :       0.000000                            0.000000 .?<,J  
Tilt X tolerance on surfaces 1 through 3 (degrees) qI) Yzc/  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 UKZsq5Q  
Change in Focus                :       0.000000                            0.000000 yw{GO([ZQ  
Tilt Y tolerance on surfaces 1 through 3 (degrees) _Sosw|A  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 b9%hzD,MR  
Change in Focus                :       0.000000                            0.000000 4@4$kro  
Decenter X tolerance on surface 1 Qg%B<3 <  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 bEMD2ABm  
Change in Focus                :       0.000000                            0.000000 =Mc*~[D/  
Decenter Y tolerance on surface 1 egYJ.ZzF0  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 E/Q[J.$o  
Change in Focus                :       0.000000                            0.000000 [_^K}\/+  
Tilt X tolerance on surface (degrees) 1 /U`"Xx  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 SYw>P1  
Change in Focus                :       0.000000                            0.000000 eXc`"T,C.  
Tilt Y tolerance on surface (degrees) 1 ("}
TW-r~  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 {3i.U028]  
Change in Focus                :       0.000000                            0.000000 bvUjH5.7  
Decenter X tolerance on surface 2 ,l_"%xYx  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Vge9AH:op  
Change in Focus                :       0.000000                            0.000000 Elom_   
Decenter Y tolerance on surface 2 pyq~_
Bng  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 "S,,BjL  
Change in Focus                :       0.000000                            0.000000 gH,^XZe  
Tilt X tolerance on surface (degrees) 2 f2`[skNj  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ?.LS_e_0  
Change in Focus                :       0.000000                            0.000000 JpcG5gX^B  
Tilt Y tolerance on surface (degrees) 2 Ty}'A(U  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 D2#3fM6  
Change in Focus                :       0.000000                            0.000000 >KNiMW^V  
Decenter X tolerance on surface 3 /3Zo8.  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 T[`o$j6  
Change in Focus                :       0.000000                            0.000000 QaH32(iH  
Decenter Y tolerance on surface 3 @dvlSqm)  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 rUc2'Ct  
Change in Focus                :       0.000000                            0.000000 Nz'fMdaX,  
Tilt X tolerance on surface (degrees) 3 Eh^c4x  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 [6`8^-}?  
Change in Focus                :       0.000000                            0.000000 @!=q.
4b  
Tilt Y tolerance on surface (degrees) 3 jL8.*pfv  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ]]Sz|6P  
Change in Focus                :       0.000000                            0.000000 }Y[xj{2$O  
Irregularity of surface 1 in fringes W;4rhZEgd  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ,6=j'j1#a  
Change in Focus                :       0.000000                            0.000000 _/;vsQB  
Irregularity of surface 2 in fringes Sb+^~M  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 :XC~G&HuF6  
Change in Focus                :       0.000000                            0.000000 Iq]+O Q  
Irregularity of surface 3 in fringes @SjISZw_  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 g`i?]6c}jt  
Change in Focus                :       0.000000                            0.000000 0Dv r:]R  
Index tolerance on surface 1 $M5iU@A  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 QbjO*:c4  
Change in Focus                :       0.000000                            0.000000 f~%|Iu1ob  
Index tolerance on surface 2 Y``50{7  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ,bzE`6  
Change in Focus                :       0.000000                           -0.000000 Ngi]I#Vz  
vMu6u .e  
Worst offenders: RZoSP(6  
Type                      Value      Criterion        Change Lp.dF)C\  
TSTY   2            -0.20000000     0.35349910    -0.19053324 %CV@FdB  
TSTY   2             0.20000000     0.35349910    -0.19053324 -+?ZJ^A   
TSTX   2            -0.20000000     0.35349910    -0.19053324 |J-Osi  
TSTX   2             0.20000000     0.35349910    -0.19053324 "yJFb=Xdq  
TSTY   1            -0.20000000     0.42678383    -0.11724851 H(Pzo+k*  
TSTY   1             0.20000000     0.42678383    -0.11724851 ^ >JAl<k  
TSTX   1            -0.20000000     0.42678383    -0.11724851 q4=Gj`\43  
TSTX   1             0.20000000     0.42678383    -0.11724851 6|:K1bI)  
TSTY   3            -0.20000000     0.42861670    -0.11541563 UCV1{  
TSTY   3             0.20000000     0.42861670    -0.11541563 4zKmoYt  
WVyk?SBw  
Estimated Performance Changes based upon Root-Sum-Square method: L|ZxB7xk  
Nominal MTF                 :     0.54403234 C$WUg<kcK'  
Estimated change            :    -0.36299231 *lyy|3z  
Estimated MTF               :     0.18104003 /|Z_Dy  
2>TOCBB"  
Compensator Statistics: H c,e&R  
Change in back focus: lt08 E2p9  
Minimum            :        -0.000000 gr
1NcHu  
Maximum            :         0.000000 AK$&'t+$}7  
Mean               :        -0.000000 uaghB,i'n  
Standard Deviation :         0.000000 mO<1&{qMZ  
NW_i<#  
Monte Carlo Analysis: >vQ8~*xd  
Number of trials: 20 u+EZ"p;o  
_Ns/#Xe/  
Initial Statistics: Normal Distribution USd7gOq(  
4
2$ pvw<  
  Trial       Criterion        Change .ni<'  
      1     0.42804416    -0.11598818 M`V<`  
Change in Focus                :      -0.400171 M/?eDW/  
      2     0.54384387    -0.00018847 8]h~jNku  
Change in Focus                :       1.018470 K}|zKTh:?  
      3     0.44510003    -0.09893230 B703{k  
Change in Focus                :      -0.601922 *!oV?N[eA'  
      4     0.18154684    -0.36248550 W_.WMbT  
Change in Focus                :       0.920681 &fofFVQnW  
      5     0.28665820    -0.25737414 $Mg[e*ct  
Change in Focus                :       1.253875 hZ_@U?^  
      6     0.21263372    -0.33139862 UahsX  
Change in Focus                :      -0.903878 6mV-+CnYC  
      7     0.40051424    -0.14351809 :'`y}'  
Change in Focus                :      -1.354815 ?_ 476A  
      8     0.48754161    -0.05649072 moS0y?N  
Change in Focus                :       0.215922 0\zY?UUww  
      9     0.40357468    -0.14045766 BTc }Kfae  
Change in Focus                :       0.281783 _=Z?5{7S>  
     10     0.26315315    -0.28087919 *Xcqnu('  
Change in Focus                :      -1.048393 &cGa~
#-u
 
     11     0.26120585    -0.28282649 x" lcE@(  
Change in Focus                :       1.017611 5(5:5q.A/D  
     12     0.24033815    -0.30369419 3c%_RI.  
Change in Focus                :      -0.109292 36e  
     13     0.37164046    -0.17239188 Gr-~&pm  
Change in Focus                :      -0.692430 )
Fgu'  
     14     0.48597489    -0.05805744 @yM
$Et5  
Change in Focus                :      -0.662040 &NKb},~  
     15     0.21462327    -0.32940907 ~+ kfb^<-  
Change in Focus                :       1.611296 PctXh, =  
     16     0.43378226    -0.11025008 <$(y6+lY  
Change in Focus                :      -0.640081 !mZDukfjQ  
     17     0.39321881    -0.15081353 +pPfvE`  
Change in Focus                :       0.914906 po\(O8#5U  
     18     0.20692530    -0.33710703 v]Fw~Y7l!  
Change in Focus                :       0.801607 'B:8tv  
     19     0.51374068    -0.03029165 5G2G<[p5oQ  
Change in Focus                :       0.947293 !He_f-eZ  
     20     0.38013374    -0.16389860
iC{(vL0P+  
Change in Focus                :       0.667010  WD55(  
$J8g)cS  
Number of traceable Monte Carlo files generated: 20 =MU(!`  
nz|6CP  
Nominal     0.54403234 W_L*S4 ~  
Best        0.54384387    Trial     2 |'Z+`HI  
Worst       0.18154684    Trial     4 dbJ3E)rF  
Mean        0.35770970 _h+7KK  
Std Dev     0.11156454 QLH!>9Ch  
e"y-A&|  
,wf:Fr  
Compensator Statistics: /WGD7\G'8  
Change in back focus: }.a{;{y  
Minimum            :        -1.354815 L{&>,ww  
Maximum            :         1.611296 S B~opN  
Mean               :         0.161872 C$p012D1  
Standard Deviation :         0.869664 :i4AkBNK  
fMIRr5  
90% >       0.20977951               D
]o=I1O?  
80% >       0.22748071               $PG
(>1e  
50% >       0.38667627               _\=x A6!  
20% >       0.46553746               r+8)<Xt+p  
10% >       0.50064115                egK~w8`W%  
3[j,d]\|  
End of Run. mv>0j<C91  
Gphy8~eS  
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 T+^Sa J  

图片:3.JPG

R#3zGWr~  
7]} I  
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 _&~l,%)&  
zMRa<G7  
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                 *=O]^|]2  
80% >       0.22748071                 L){V(*K '  
50% >       0.38667627                 =xDxX#3  
20% >       0.46553746                 OwEV$Q  
10% >       0.50064115 iZ>P>x\  
n-2!<`UFX  
最后这个数值是MTF值呢，还是MTF的公差？ !@])Ut@tN  
p:4-b"O  
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？？？   y{&%]Fq <5  
X $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  : mXhC-8P  
90% >       0.20977951                 g$mMH  
80% >       0.22748071                 <&`Rf6  
50% >       0.38667627                 \v+c.  
20% >       0.46553746                 cZ !$XXA`  
10% >       0.50064115 Y@q9  
....... /=l!F'  

~`Vo0Z*S  
_g9j_
x:=  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm  
hT_Q_1,  
Mode                : Sensitivities ge%QbU1J  
Sampling            : 2 -Vb5d!(  
Nominal Criterion   : 0.54403234 Isvb;VT9L  
Test Wavelength     : 0.6328 i"Hc(lg  
|{-?OOKj  
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？  Y%y  
khT[  
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