[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 AY|8wf,LS  
]Kil/Y  
HOXqIZN85  
7?B]X%  
然后添加了默认公差分析，基本没变 Ks9"U^bPs  
{ 5h6nYu  
5(TI2,4  
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然后运行分析的结果如下： [+>$'Du  
!d%OoRSU'  
Analysis of Tolerances N\ GBjr-d  
CEZ*a 0}=  
File : E:\光学设计资料\zemax练习\f500.ZMX !P#lTyz  
Title: RIb< 7  
Date : TUE JUN 21 2011 ;nSaZ$`5  
.(nq"&u-*  
Units are Millimeters. v5 $"v?PT  
All changes are computed using linear differences. @ttcFX1:W  
8V^gOUF.  
Paraxial Focus compensation only. JFl@{6
c  
I)9;4lix  
WARNING: Solves should be removed prior to tolerancing. sj
Yg  
4ILCvM  
Mnemonics: RG#  
TFRN: Tolerance on curvature in fringes. )7[>/2aGd  
TTHI: Tolerance on thickness. o^7}H{AE  
TSDX: Tolerance on surface decentering in x. x~A""*B~  
TSDY: Tolerance on surface decentering in y. 2'_Oi-&  
TSTX: Tolerance on surface tilt in x (degrees). \MX>=  
TSTY: Tolerance on surface tilt in y (degrees). ^MDBJ0 I.  
TIRR: Tolerance on irregularity (fringes). ;./Tv84I^  
TIND: Tolerance on Nd index of refraction. 19&!#z  
TEDX: Tolerance on element decentering in x. |OuZaCJG  
TEDY: Tolerance on element decentering in y. !j(v-pQf"  
TETX: Tolerance on element tilt in x (degrees). H&`p9d*(e  
TETY: Tolerance on element tilt in y (degrees). Nl PP|=o  
xw]Zo<F  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. \Qz>us=G  
2t/ba3Rfk  
WARNING: Boundary constraints on compensators will be ignored. 'I*F(4x  
1,9RfYV  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Y#3m|b45n  
Mode                : Sensitivities ] QtGgWtC  
Sampling            : 2 ${0Xq k  
Nominal Criterion   : 0.54403234 UYGl  
Test Wavelength     : 0.6328 Xq+7l5LP  
[t,grdw  
FL"IPX;
S  
Fields: XY Symmetric Angle in degrees |&h!#Q{7l  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY pBh[F5  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 1K4LEga`  
#](ML:!  
Sensitivity Analysis:
u;J9aKD  
Su-LZ'C\  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| ;m@>v?zE  
Type                      Value      Criterion        Change          Value      Criterion        Change L&
q~5 9  
Fringe tolerance on surface 1 YtxBkKiJ2V  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 hFs0qPVY  
Change in Focus                :      -0.000000                            0.000000 ~+V]MT  
Fringe tolerance on surface 2 nS]/=xP{  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230
Uw<Lt"ls.  
Change in Focus                :       0.000000                            0.000000 82efqzT  
Fringe tolerance on surface 3 M'R^?Jjb  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 "JbFbcj  
Change in Focus                :      -0.000000                            0.000000 N y7VIh|  
Thickness tolerance on surface 1 IeZ}`$[H  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 m
-7^$  
Change in Focus                :       0.000000                            0.000000 K;gm^  
Thickness tolerance on surface 2 [&3G `8hY  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 laKMQLtv  
Change in Focus                :       0.000000                           -0.000000 _f{'&YhUU  
Decenter X tolerance on surfaces 1 through 3 ?)5}v4b  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 %ktU 51o  
Change in Focus                :       0.000000                            0.000000 nu4GK}xI  
Decenter Y tolerance on surfaces 1 through 3 I^0bEwqZ~  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 rS{Rzs^@  
Change in Focus                :       0.000000                            0.000000 /p?h@6h@y  
Tilt X tolerance on surfaces 1 through 3 (degrees) YdhrFw0`~r  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 @fPiGu`L  
Change in Focus                :       0.000000                            0.000000 xBR2tDi%  
Tilt Y tolerance on surfaces 1 through 3 (degrees) 8!S="_  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 #oJ9BgDry  
Change in Focus                :       0.000000                            0.000000 +twJHf_U  
Decenter X tolerance on surface 1 ;'p X1T  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 d+[hB4!l2  
Change in Focus                :       0.000000                            0.000000 +q
1 @8  
Decenter Y tolerance on surface 1 ) l0=jb  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 M I/9?B  
Change in Focus                :       0.000000                            0.000000 \E]s]ft;+  
Tilt X tolerance on surface (degrees) 1 \CX`PZ><  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Gk'J'9*  
Change in Focus                :       0.000000                            0.000000 !@p@u;djJ  
Tilt Y tolerance on surface (degrees) 1 @1^iWM j  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 [[LCEw  
Change in Focus                :       0.000000                            0.000000 #eR*|W7o  
Decenter X tolerance on surface 2 8&3+=<U  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ~^KemwogPN  
Change in Focus                :       0.000000                            0.000000 /J wQ5  
Decenter Y tolerance on surface 2 [;h@q}  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ~,m6g&>R  
Change in Focus                :       0.000000                            0.000000 'FO^VJ;ha  
Tilt X tolerance on surface (degrees) 2 enDjP  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 "&77`
R  
Change in Focus                :       0.000000                            0.000000 Q~te`  
Tilt Y tolerance on surface (degrees) 2 ERCW5b[RT  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 k%VV(P]sT  
Change in Focus                :       0.000000                            0.000000 CQ"5bnR  
Decenter X tolerance on surface 3 f.,S-1D]h  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Q<wrO  
Change in Focus                :       0.000000                            0.000000 83OOM;'  
Decenter Y tolerance on surface 3 3' mQ=tKa  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 $l7 <j_C  
Change in Focus                :       0.000000                            0.000000 xBl}=M?Qu  
Tilt X tolerance on surface (degrees) 3 {[NBTT9&  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 mst-:F[h  
Change in Focus                :       0.000000                            0.000000 Z  r  
Tilt Y tolerance on surface (degrees) 3 gM^ Hs7o,  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 }
gGcYRT  
Change in Focus                :       0.000000                            0.000000 sMs 0*B-[  
Irregularity of surface 1 in fringes M,3sK!`>  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 P9SyQbcK  
Change in Focus                :       0.000000                            0.000000 zxT&K|  
Irregularity of surface 2 in fringes D-69/3PvP  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 cK1r9ED|  
Change in Focus                :       0.000000                            0.000000 `G@]\)-!  
Irregularity of surface 3 in fringes ?2aglj*"v,  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 at/besW  
Change in Focus                :       0.000000                            0.000000
Vj2]-]Cm  
Index tolerance on surface 1 @m<xpel  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 qI5_@[S*  
Change in Focus                :       0.000000                            0.000000 !QSL8v@c  
Index tolerance on surface 2 =M*31>"I0  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 FI Io{ru  
Change in Focus                :       0.000000                           -0.000000 1<Qb"FN!2  
rMdOE&5G  
Worst offenders: d+\o>x|Y!Y  
Type                      Value      Criterion        Change [yW0U:m  
TSTY   2            -0.20000000     0.35349910    -0.19053324 VNp[J'a>VZ  
TSTY   2             0.20000000     0.35349910    -0.19053324 r@%-S!$  
TSTX   2            -0.20000000     0.35349910    -0.19053324 Nw/4z$].J  
TSTX   2             0.20000000     0.35349910    -0.19053324 u?&P6|J&  
TSTY   1            -0.20000000     0.42678383    -0.11724851 l> W?XH  
TSTY   1             0.20000000     0.42678383    -0.11724851 F$^RM3  
TSTX   1            -0.20000000     0.42678383    -0.11724851 p
>Qzz`@e  
TSTX   1             0.20000000     0.42678383    -0.11724851 T9}G:6  
TSTY   3            -0.20000000     0.42861670    -0.11541563 sV%<U-X  
TSTY   3             0.20000000     0.42861670    -0.11541563 p?>(y  
@_J~zo  
Estimated Performance Changes based upon Root-Sum-Square method: &&nvv&a  
Nominal MTF                 :     0.54403234 ~*79rDs
{  
Estimated change            :    -0.36299231 pW2NrBq@w  
Estimated MTF               :     0.18104003 !NuiVC]  
RplLU7  
Compensator Statistics: h-].?X,]Q  
Change in back focus: ;xS@-</:  
Minimum            :        -0.000000 &z+nNkr?yN  
Maximum            :         0.000000 *GH`u*C_  
Mean               :        -0.000000 w/IYQC\v  
Standard Deviation :         0.000000 SDwTGQ/0  
LPc)-t|p"  
Monte Carlo Analysis: anxgD?<+B  
Number of trials: 20 FAX|.!US*p  
=8?y$WE  
Initial Statistics: Normal Distribution ;6KcX\g-  
NTbmI$(  
  Trial       Criterion        Change 3CL/9C>  
      1     0.42804416    -0.11598818 iyKAw   
Change in Focus                :      -0.400171 ZVs]_`(+  
      2     0.54384387    -0.00018847 ;|}N\[fk%]  
Change in Focus                :       1.018470 c@7d4Jz  
      3     0.44510003    -0.09893230 NvW`x  
Change in Focus                :      -0.601922 zkt`7Pg;J  
      4     0.18154684    -0.36248550 Z$LWZg  
Change in Focus                :       0.920681 Yd'Fhvo8  
      5     0.28665820    -0.25737414 t~]n"zgovz  
Change in Focus                :       1.253875 =(2y$,6g?  
      6     0.21263372    -0.33139862 (H5nz':  
Change in Focus                :      -0.903878 LeRyS]  
      7     0.40051424    -0.14351809 f>!)y-7  
Change in Focus                :      -1.354815 6?$yBu9l  
      8     0.48754161    -0.05649072  DA]<30w  
Change in Focus                :       0.215922
Ne#FBRu5  
      9     0.40357468    -0.14045766 `?f6~$1  
Change in Focus                :       0.281783 : fMQ,S0  
     10     0.26315315    -0.28087919 nWb*u  
Change in Focus                :      -1.048393 .);~H#  
     11     0.26120585    -0.28282649 =1sGT;>  
Change in Focus                :       1.017611 8?LsV<  
     12     0.24033815    -0.30369419 i^T@jg+K  
Change in Focus                :      -0.109292 \kWL:uU  
     13     0.37164046    -0.17239188 K)b@,/5  
Change in Focus                :      -0.692430 C# zYZ JZ  
     14     0.48597489    -0.05805744 |ecK~+  
Change in Focus                :      -0.662040 qW+'#Jh@TV  
     15     0.21462327    -0.32940907 4PK/8^@7)>  
Change in Focus                :       1.611296 yC\dM1X  
     16     0.43378226    -0.11025008 V6Z~#=EQ  
Change in Focus                :      -0.640081 Q\Wh]=}  
     17     0.39321881    -0.15081353 `
(tVwX4  
Change in Focus                :       0.914906 ?#s9@R1  
     18     0.20692530    -0.33710703 b3.  
Change in Focus                :       0.801607 6`Hd)T5{w  
     19     0.51374068    -0.03029165 *$e1Bv6 $  
Change in Focus                :       0.947293 Ig&H0S  
     20     0.38013374    -0.16389860 k_;g-r,  
Change in Focus                :       0.667010 ]gjQy.c|  
@}; vl  
Number of traceable Monte Carlo files generated: 20 E? lK(C  
TrCut2  
Nominal     0.54403234 d
e=){.7Y  
Best        0.54384387    Trial     2 zUuOX5-6x  
Worst       0.18154684    Trial     4 d?:KEi-<7  
Mean        0.35770970 `PY=B$?{4  
Std Dev     0.11156454 :1asY:)vNP  
LV2#w_^I  
RN^<bt{_U  
Compensator Statistics: =csh=V@s  
Change in back focus: ^?M# |>  
Minimum            :        -1.354815 (aC~0 #4  
Maximum            :         1.611296 B]2m(0Y>>v  
Mean               :         0.161872 |$|B0mj  
Standard Deviation :         0.869664 f/7on|bv
 
t=nZ1GZyM  
90% >       0.20977951               cMs8D  
80% >       0.22748071               e5AZU7%.  
50% >       0.38667627               G&Fe2&5!w  
20% >       0.46553746               B4@1WZn<8  
10% >       0.50064115                bG)EZ  
knn9s0'Q  
End of Run. }~NM\rm  
gV}c4>v(  
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 FEH+ PKSc  
NufRd/q  
HPMj+xH  
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 C'~Eq3  
vpq"mpfkh  
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                 b@S~ =  
80% >       0.22748071                 [K
g3:]2A  
50% >       0.38667627                 uZTbJ3$$  
20% >       0.46553746                 XU<XK9EA  
10% >       0.50064115 @Q7^caG  
:q>)c]  
最后这个数值是MTF值呢，还是MTF的公差？ ]eUD3WUe>q  
OI_Px3) y  
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？？？   N\"Hf=Y(~  
4/V;g%0uN;  
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  : 8QMMKOui\  
90% >       0.20977951                 elR1NhB|p  
80% >       0.22748071                 ,gW$m
~\  
50% >       0.38667627                 cuI&Q?+c}  
20% >       0.46553746                 =jA.INin4  
10% >       0.50064115 C8do8$  
....... fLeHn,*,"  

I?nU+t;  
EuA352x  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   zsj]WP6j  
Mode                : Sensitivities )iVuac]E++  
Sampling            : 2 gv&Hu$ca  
Nominal Criterion   : 0.54403234 s'd\"WaQV  
Test Wavelength     : 0.6328 ~
]Av$S  
/XA*:8~!  
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？ a1ps'^Qhh  
1(_[awBx  
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