[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 YME[%c2x  
#jgqkMOd,j  

图片:1.JPG

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然后添加了默认公差分析，基本没变 DOT=U _  
,M{Q}:$+4  

图片:2.jpg

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然后运行分析的结果如下： *k!(ti[  
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Analysis of Tolerances z[Z2H5[  
*78)2)=~  
File : E:\光学设计资料\zemax练习\f500.ZMX bm^X!i5  
Title: w=5
  
Date : TUE JUN 21 2011 ,y%ziay  
\"J?@  
Units are Millimeters. ennR@pg  
All changes are computed using linear differences. \{:%v#ZZ  
$wgc vySx  
Paraxial Focus compensation only. |a>}9:g,=*  
8T<@ @6`T  
WARNING: Solves should be removed prior to tolerancing. y]<#%Fh  
PM8Ks?P#u  
Mnemonics: n{L:MT9TD  
TFRN: Tolerance on curvature in fringes. `i9N)3 X  
TTHI: Tolerance on thickness. @kz!{g]Sn  
TSDX: Tolerance on surface decentering in x. sK`<
kbj  
TSDY: Tolerance on surface decentering in y. 2Gm-\o&Td"  
TSTX: Tolerance on surface tilt in x (degrees). [
u7 vY@  
TSTY: Tolerance on surface tilt in y (degrees). **.:)  
TIRR: Tolerance on irregularity (fringes). u7n[f@Eg,%  
TIND: Tolerance on Nd index of refraction. T G_bje  
TEDX: Tolerance on element decentering in x. }2h't.Z<u  
TEDY: Tolerance on element decentering in y. k06xz#pL  
TETX: Tolerance on element tilt in x (degrees). =MCNCV/
<  
TETY: Tolerance on element tilt in y (degrees). g;l'VA3v  
MSK'2+1T@g  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Q:pzL "bT  
.#sz|0  
WARNING: Boundary constraints on compensators will be ignored. W _J&M4  
C`3V=BB  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm |.Em_*VG  
Mode                : Sensitivities m$,cH>E  
Sampling            : 2 gm(De9u  
Nominal Criterion   : 0.54403234 2YE7 23H=Z  
Test Wavelength     : 0.6328 Xthtw*  
oPCrD.s  
-%>8.#~G  
Fields: XY Symmetric Angle in degrees E2kW=6VO>|  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY `bzr_fJ  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 {>wI8  
El'yiJ  
Sensitivity Analysis: qw|JJ  
lxo.,n)  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| w2 /* `YO  
Type                      Value      Criterion        Change          Value      Criterion        Change HOq4i!  
Fringe tolerance on surface 1 sTt9'P`  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 P@2tR5<R  
Change in Focus                :      -0.000000                            0.000000 v#iFQVBq  
Fringe tolerance on surface 2 $pjf#P8U  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 {,i=>%X*  
Change in Focus                :       0.000000                            0.000000 4sb )^3T  
Fringe tolerance on surface 3 XO0>t{G  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 6`_!?u7  
Change in Focus                :      -0.000000                            0.000000 IY V-*/ |  
Thickness tolerance on surface 1 o>0O@NE  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 {5U1`
>  
Change in Focus                :       0.000000                            0.000000 4pLQ"&>}80  
Thickness tolerance on surface 2 8n;kK?  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ok%EqO  
Change in Focus                :       0.000000                           -0.000000
Tku/OG'  
Decenter X tolerance on surfaces 1 through 3 anK[P'Y  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ]vRVo6@ k  
Change in Focus                :       0.000000                            0.000000 Lwp-2`%  
Decenter Y tolerance on surfaces 1 through 3 ylkpYd  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 lr`?yn1D(  
Change in Focus                :       0.000000                            0.000000 CKx\V+\O  
Tilt X tolerance on surfaces 1 through 3 (degrees) :-$cdZ3E  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 /z/hUa  
Change in Focus                :       0.000000                            0.000000 '&N: S-  
Tilt Y tolerance on surfaces 1 through 3 (degrees) EW ~*@H  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 :/>7$)+  
Change in Focus                :       0.000000                            0.000000 8rGl&  
Decenter X tolerance on surface 1 `x2fp6  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 #:]vUQ  
Change in Focus                :       0.000000                            0.000000 5tN%a>D%  
Decenter Y tolerance on surface 1 `kqT{fs  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 o~Bk0V
=  
Change in Focus                :       0.000000                            0.000000 ]&&I|K_  
Tilt X tolerance on surface (degrees) 1 8dr0 DF$c  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 X QI.0L"  
Change in Focus                :       0.000000                            0.000000 ,@}W@GGP)  
Tilt Y tolerance on surface (degrees) 1 'Y hA  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 UN,<6D3\b  
Change in Focus                :       0.000000                            0.000000 2.^7?ok  
Decenter X tolerance on surface 2 3js)niT9u  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 OI'uH$y  
Change in Focus                :       0.000000                            0.000000 bq c;.4$  
Decenter Y tolerance on surface 2 &W&7bZ$;  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 yfPCGCOW?  
Change in Focus                :       0.000000                            0.000000 bk/.<Rt  
Tilt X tolerance on surface (degrees) 2 [P.@1mV  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 C*"Rd   
Change in Focus                :       0.000000                            0.000000 vs5 D:cZ}  
Tilt Y tolerance on surface (degrees) 2 `Mo~EHso.  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 EZ:I$X  
Change in Focus                :       0.000000                            0.000000 *raIV]W3  
Decenter X tolerance on surface 3 6&g!ZE'G  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 k\4g|Lya  
Change in Focus                :       0.000000                            0.000000 Ytl:YzXCi  
Decenter Y tolerance on surface 3 vN{vJlpY  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 :GN)7|:  
Change in Focus                :       0.000000                            0.000000 OwNAN  
Tilt X tolerance on surface (degrees) 3 #]?,gwvTf  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 F7k4C2r  
Change in Focus                :       0.000000                            0.000000 .a 'ETNY:>  
Tilt Y tolerance on surface (degrees) 3 i;
E9ZaW  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 2N6Pa(6  
Change in Focus                :       0.000000                            0.000000 c28oLT1|D  
Irregularity of surface 1 in fringes /.pa ??u  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 [,\'V0  
Change in Focus                :       0.000000                            0.000000 MuCQxzvkhf  
Irregularity of surface 2 in fringes R*JOiVAC  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 H @3$1h&YS  
Change in Focus                :       0.000000                            0.000000 :d!i[W*  
Irregularity of surface 3 in fringes Y}V)4j  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Ktg&G<%J0  
Change in Focus                :       0.000000                            0.000000 Z&~k]R0y  
Index tolerance on surface 1 "cnG/{($*  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 f)&`mqeE  
Change in Focus                :       0.000000                            0.000000 }e&KO?x+  
Index tolerance on surface 2 9`nP
(~  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 J ,Qy`Y B  
Change in Focus                :       0.000000                           -0.000000 Sa?~t3*H  
7?kXgR[#d  
Worst offenders: {GGO')
p  
Type                      Value      Criterion        Change sqq/b9 uL/  
TSTY   2            -0.20000000     0.35349910    -0.19053324 B`RW-14g  
TSTY   2             0.20000000     0.35349910    -0.19053324 ^L*VW gi9  
TSTX   2            -0.20000000     0.35349910    -0.19053324 j8D$/  
TSTX   2             0.20000000     0.35349910    -0.19053324 73! x@Duh  
TSTY   1            -0.20000000     0.42678383    -0.11724851 fzGZ:L  
TSTY   1             0.20000000     0.42678383    -0.11724851 L<[
,7V  
TSTX   1            -0.20000000     0.42678383    -0.11724851 [T$$od[.  
TSTX   1             0.20000000     0.42678383    -0.11724851 dpc=yXg>"c  
TSTY   3            -0.20000000     0.42861670    -0.11541563 ?z4uze1  
TSTY   3             0.20000000     0.42861670    -0.11541563 a$+e8>  
K'{wncumQ  
Estimated Performance Changes based upon Root-Sum-Square method: iTKG,$G  
Nominal MTF                 :     0.54403234 yK @X^jf  
Estimated change            :    -0.36299231 PBPJ/puW  
Estimated MTF               :     0.18104003 } (GQDJp  
6`$,-(J=  
Compensator Statistics: skmDsZzw  
Change in back focus: 1*x5/b  
Minimum            :        -0.000000 2Wc;hJ.1  
Maximum            :         0.000000 `*uuB;  
Mean               :        -0.000000 ~gzpX,{n  
Standard Deviation :         0.000000 nKZRq&~^E  
D@YM}HXuj  
Monte Carlo Analysis: ^<5^9]x  
Number of trials: 20 f|[5&,2<  
eog,EP"a8Y  
Initial Statistics: Normal Distribution 5.+$v4  
a3E*%G  
  Trial       Criterion        Change *YEIG#`  
      1     0.42804416    -0.11598818 #h5Hi9LKf  
Change in Focus                :      -0.400171 ZRVF{D??"%  
      2     0.54384387    -0.00018847 BZ'y}Zu*  
Change in Focus                :       1.018470 `6l24_eKf  
      3     0.44510003    -0.09893230 ^*owD;]4_  
Change in Focus                :      -0.601922 XQ|j5]  
      4     0.18154684    -0.36248550 JOE{&^j  
Change in Focus                :       0.920681 9g^./k\8%  
      5     0.28665820    -0.25737414 < 8W:ij.`  
Change in Focus                :       1.253875 :h](;W>H  
      6     0.21263372    -0.33139862 jy)9EU=  
Change in Focus                :      -0.903878 Nr*ibtz|D  
      7     0.40051424    -0.14351809 , K"2tb  
Change in Focus                :      -1.354815 ^Qb!k/$3y  
      8     0.48754161    -0.05649072 }M"'K2_Z  
Change in Focus                :       0.215922 1>O0Iu  
      9     0.40357468    -0.14045766 56~da ){gd  
Change in Focus                :       0.281783 jWb\"0)  
     10     0.26315315    -0.28087919 ,~68~_)  
Change in Focus                :      -1.048393 TJGKQyG$L  
     11     0.26120585    -0.28282649 {<V|Gr  
Change in Focus                :       1.017611 ,:Y=,[n  
     12     0.24033815    -0.30369419 8aM% 9OU  
Change in Focus                :      -0.109292 mrBhvp""  
     13     0.37164046    -0.17239188 EXM/>PG  
Change in Focus                :      -0.692430 oY#XWe8Om  
     14     0.48597489    -0.05805744 w]}cB+C+l#  
Change in Focus                :      -0.662040 OG<]`!"  
     15     0.21462327    -0.32940907 C(Bar#  
Change in Focus                :       1.611296 3By>t!~Q  
     16     0.43378226    -0.11025008 -B++V  
Change in Focus                :      -0.640081 ,C12SM*@  
     17     0.39321881    -0.15081353 W9
V=hQ2
 
Change in Focus                :       0.914906 !*QA;*e  
     18     0.20692530    -0.33710703 0O9 Lg}  
Change in Focus                :       0.801607 hE3jb.s(>  
     19     0.51374068    -0.03029165 w}KcLa
I  
Change in Focus                :       0.947293 &^Q~G>A  
     20     0.38013374    -0.16389860 XzR
WY\x  
Change in Focus                :       0.667010 $F'~^2  
dIh(~KqB  
Number of traceable Monte Carlo files generated: 20 N7|W.(  
L bK1CGyA  
Nominal     0.54403234 KgkB)1s@n  
Best        0.54384387    Trial     2 S>zKD  
Worst       0.18154684    Trial     4 T)?@E/VaS  
Mean        0.35770970 oGjYCV
c  
Std Dev     0.11156454 |r*1.V(  
hFF&(t2{^  
hD~/6bx  
Compensator Statistics: Fu
=VY{U4  
Change in back focus: 7JK 'vT  
Minimum            :        -1.354815 JL*]9$o  
Maximum            :         1.611296 ,}xC) >  
Mean               :         0.161872 `1}yB  
Standard Deviation :         0.869664 <@2?2l+`X  
78}%{7YY  
90% >       0.20977951               SodW5v a  
80% >       0.22748071               :zTj"P>"I  
50% >       0.38667627               ,DsT:8  
20% >       0.46553746               &b:Zln.j  
10% >       0.50064115                m*WEge*$t  
<L[)P{jn?p  
End of Run. 2FtEt+A+'  
NxRiEe#m  
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 U%6lYna{M#  

图片:3.JPG

}T(q"Vf~  
J!qEj{  
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 t"m`P1  
Ki6BPi^  
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                 c_=zd6 b$S  
80% >       0.22748071                 lY,1 w
 
50% >       0.38667627                 BNUf0;
 
20% >       0.46553746                 ~H."{  
10% >       0.50064115 !I  P*  
`qEm5+`  
最后这个数值是MTF值呢，还是MTF的公差？ =?x=CEW  
PhdL@Mr  
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？？？   @Kb~!y@G  
En%o7^W++  
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  : qlP=Y .H  
90% >       0.20977951                 *a4eL [  
80% >       0.22748071                 GW#Wy=(_  
50% >       0.38667627                 pj`-T"Q  
20% >       0.46553746                 irS62Xe  
10% >       0.50064115 v'=APl+_  
....... 4kEFbzwx  

HF:PF"|3  
K
Yaf7qy]  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   pOXEM1"2A  
Mode                : Sensitivities 195(Kr<5$  
Sampling            : 2 lHU$A;  
Nominal Criterion   : 0.54403234 ObUQB
+  
Test Wavelength     : 0.6328 /uWON4  
p%_TbH3j`  
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？ a)e2WgVB/E  
/"U<0jot  
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