[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 s!
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然后添加了默认公差分析，基本没变 YcpoL@ab  
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然后运行分析的结果如下： v z '&%(  
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Analysis of Tolerances cHt#us  
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File : E:\光学设计资料\zemax练习\f500.ZMX HCC#j9UN6  
Title: VS8Rx.?  
Date : TUE JUN 21 2011 Fy-t T]Q9  
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Units are Millimeters. u5f9Jw}  
All changes are computed using linear differences. bB3powy9  
b2&0Hx  
Paraxial Focus compensation only. dVT$VQg  
9m~p0ILh  
WARNING: Solves should be removed prior to tolerancing. `&ckZiq  
GDiBl*D  
Mnemonics: q'Tf,a  
TFRN: Tolerance on curvature in fringes. J]pir4&j  
TTHI: Tolerance on thickness. 3m!X/u  
TSDX: Tolerance on surface decentering in x. 'kO!^6=4M  
TSDY: Tolerance on surface decentering in y. &Ys<@M7E:  
TSTX: Tolerance on surface tilt in x (degrees). IKilr'  
TSTY: Tolerance on surface tilt in y (degrees). *mvlb (' &  
TIRR: Tolerance on irregularity (fringes). x)O!["'"  
TIND: Tolerance on Nd index of refraction. <1${1A <Wa  
TEDX: Tolerance on element decentering in x. hy"\RW  
TEDY: Tolerance on element decentering in y. 9Y_HyOZ*GX  
TETX: Tolerance on element tilt in x (degrees). K/yxE|w<  
TETY: Tolerance on element tilt in y (degrees). :(*V?WI  
9 X`Sm}i  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. jLHkOk5{:  
@>Km_Ax  
WARNING: Boundary constraints on compensators will be ignored. 3K0A)W/YEs  
5f K_Aq{  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm _H7x9 y=  
Mode                : Sensitivities A0 C,tVd  
Sampling            : 2 Zw S F^  
Nominal Criterion   : 0.54403234 O`t&ldU  
Test Wavelength     : 0.6328 ]:k/Y$O2  
Sp]0c[37R  
!9VY|&fHe  
Fields: XY Symmetric Angle in degrees #yF&X(%  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 
< !C)x  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 m'=Crei  
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Sensitivity Analysis: 6HWE~`ok6  
lE(HFal0-(  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| xHLlMn4M  
Type                      Value      Criterion        Change          Value      Criterion        Change ShP^A"Do  
Fringe tolerance on surface 1 ~H<6gN<j(.  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 czgO ;3-C  
Change in Focus                :      -0.000000                            0.000000 6wjw^m0  
Fringe tolerance on surface 2 #rQ2gx4  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Ad9}9!<  
Change in Focus                :       0.000000                            0.000000 6Vnsi%{  
Fringe tolerance on surface 3 fW1CFRHH  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 3J|F?M"N7  
Change in Focus                :      -0.000000                            0.000000 Q6!zZ))~  
Thickness tolerance on surface 1 i^Y+?Sx  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 RmeD$>7  
Change in Focus                :       0.000000                            0.000000 yfjWbW  
Thickness tolerance on surface 2 ?(F6#"
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TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 j[G  
Change in Focus                :       0.000000                           -0.000000 17"uf.G  
Decenter X tolerance on surfaces 1 through 3 2,b(,3{`4:  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Zbt.t]N  
Change in Focus                :       0.000000                            0.000000 E`usknf>l  
Decenter Y tolerance on surfaces 1 through 3 pG^  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 _P 3G
  
Change in Focus                :       0.000000                            0.000000 i
0kak`x0  
Tilt X tolerance on surfaces 1 through 3 (degrees) Q}K"24`=  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 G3vxjD<DMW  
Change in Focus                :       0.000000                            0.000000 P90yI  
Tilt Y tolerance on surfaces 1 through 3 (degrees) *:LK8U  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 li'YDtMKCY  
Change in Focus                :       0.000000                            0.000000 $)ijN^hV  
Decenter X tolerance on surface 1 o!Ieb  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671
6"5A%{J  
Change in Focus                :       0.000000                            0.000000 gpvYb7Of0  
Decenter Y tolerance on surface 1 *-=(Q`3  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Zd}9O jz5  
Change in Focus                :       0.000000                            0.000000 gw3K+P  
Tilt X tolerance on surface (degrees) 1 PI:4m%[  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 .*?wF  
Change in Focus                :       0.000000                            0.000000 FQ7T'G![  
Tilt Y tolerance on surface (degrees) 1 t?-n*9,#S  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Ml{Z  
Change in Focus                :       0.000000                            0.000000 aFb==73aLw  
Decenter X tolerance on surface 2 ~"&|W'he[  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 {JO  
Change in Focus                :       0.000000                            0.000000 ~Z?TFg  
Decenter Y tolerance on surface 2 L:pYn_  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 r?lf($D*  
Change in Focus                :       0.000000                            0.000000 2~1SQ.Q<RY  
Tilt X tolerance on surface (degrees) 2 ^w@%cVh  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 sV{,S>s  
Change in Focus                :       0.000000                            0.000000 Bs_s&a>  
Tilt Y tolerance on surface (degrees) 2 j_!F*yul  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324
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Change in Focus                :       0.000000                            0.000000 0w\
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Decenter X tolerance on surface 3 ~Ei$nV  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 g1/[eoZzk  
Change in Focus                :       0.000000                            0.000000 `iAF3:  
Decenter Y tolerance on surface 3 6xe*E[#k\  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 t7dt*D_YqK  
Change in Focus                :       0.000000                            0.000000 Ustv{:7v  
Tilt X tolerance on surface (degrees) 3 ,.83m%i  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 iwZPpl";  
Change in Focus                :       0.000000                            0.000000 <EB+1GFuI  
Tilt Y tolerance on surface (degrees) 3 85|OGtt  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 nJG U-Z  
Change in Focus                :       0.000000                            0.000000 ( iBl  
Irregularity of surface 1 in fringes 'RQ+g}|Ba!  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 MSQEO4ge  
Change in Focus                :       0.000000                            0.000000 \:# L)  
Irregularity of surface 2 in fringes *
J7DY f  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ]YnD  
Change in Focus                :       0.000000                            0.000000 =)H.cuc  
Irregularity of surface 3 in fringes hLd^ agX  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 7 S#J>*  
Change in Focus                :       0.000000                            0.000000 *v jmy/3  
Index tolerance on surface 1 55nlg>j  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 JgKO|VO  
Change in Focus                :       0.000000                            0.000000 -LoZs ru  
Index tolerance on surface 2 RE7?KR>  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 uB]7G0g:  
Change in Focus                :       0.000000                           -0.000000 ~:rl=o}  
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Worst offenders: {3>$[bT  
Type                      Value      Criterion        Change Xy|So|/bKd  
TSTY   2            -0.20000000     0.35349910    -0.19053324 IXMop7~  
TSTY   2             0.20000000     0.35349910    -0.19053324 jH5 k  
TSTX   2            -0.20000000     0.35349910    -0.19053324 \%JgH=@ :=  
TSTX   2             0.20000000     0.35349910    -0.19053324 =V,mtT  
TSTY   1            -0.20000000     0.42678383    -0.11724851 U2tV4_ e  
TSTY   1             0.20000000     0.42678383    -0.11724851 _UMg[Um  
TSTX   1            -0.20000000     0.42678383    -0.11724851 }WC[$Y_@  
TSTX   1             0.20000000     0.42678383    -0.11724851 }>pknc?  
TSTY   3            -0.20000000     0.42861670    -0.11541563 '%s.^kn  
TSTY   3             0.20000000     0.42861670    -0.11541563 fIx+ILs  
9N#_(uwt  
Estimated Performance Changes based upon Root-Sum-Square method: >\-hO&%_  
Nominal MTF                 :     0.54403234 |B?m,U$A!  
Estimated change            :    -0.36299231 )#0O>F~  
Estimated MTF               :     0.18104003 p,5i)nEFj  
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Compensator Statistics: vjbASFF0=  
Change in back focus: lLX4Gq1  
Minimum            :        -0.000000 .KB^3pOpx  
Maximum            :         0.000000 /kZebNf6H  
Mean               :        -0.000000 O40?{v'  
Standard Deviation :         0.000000 s[RAHU  
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Monte Carlo Analysis: 2RVN\?s:  
Number of trials: 20 {g'(~ qv  
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Initial Statistics: Normal Distribution g+8OekzB5  
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  Trial       Criterion        Change ttaM.  
      1     0.42804416    -0.11598818 i^/T  
Change in Focus                :      -0.400171 MD}w Y><C  
      2     0.54384387    -0.00018847 !j
8FIY'[  
Change in Focus                :       1.018470
@+&LYy72  
      3     0.44510003    -0.09893230 .Yamc
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Change in Focus                :      -0.601922 A]_7}<<N  
      4     0.18154684    -0.36248550 a(m2n.0'>  
Change in Focus                :       0.920681 $P >  
      5     0.28665820    -0.25737414 >2Y=*K,:  
Change in Focus                :       1.253875 paA(C|%{  
      6     0.21263372    -0.33139862 wm+};L&_  
Change in Focus                :      -0.903878 6B8VfQ9[  
      7     0.40051424    -0.14351809 f$o_e90mu  
Change in Focus                :      -1.354815 u4*BX&  
      8     0.48754161    -0.05649072 [$ubNk;!z  
Change in Focus                :       0.215922 #>a\>iKQ2q  
      9     0.40357468    -0.14045766 iOf<$f  
Change in Focus                :       0.281783 Eh)fnqs_d}  
     10     0.26315315    -0.28087919 SJlr53  
Change in Focus                :      -1.048393 i7CX65&b  
     11     0.26120585    -0.28282649 H9Gh>u]}  
Change in Focus                :       1.017611 PF0_8,@U  
     12     0.24033815    -0.30369419 +N]J5Ve-`t  
Change in Focus                :      -0.109292 /m!BY}4W  
     13     0.37164046    -0.17239188 .97])E[U  
Change in Focus                :      -0.692430 =bAx,,D#  
     14     0.48597489    -0.05805744 vRTkgH#4l  
Change in Focus                :      -0.662040 1>.Ev,X+e  
     15     0.21462327    -0.32940907 vJLK,[  
Change in Focus                :       1.611296 [DYQ"A=)d  
     16     0.43378226    -0.11025008 W Tcw4  
Change in Focus                :      -0.640081 `{8K.(])s!  
     17     0.39321881    -0.15081353 !K#qeY}  
Change in Focus                :       0.914906 %6t
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     18     0.20692530    -0.33710703 DVO.FTV^`  
Change in Focus                :       0.801607 i:dR\|B  
     19     0.51374068    -0.03029165 cQjv$$&6[  
Change in Focus                :       0.947293 !@5 9)  
     20     0.38013374    -0.16389860 %J}xg^+f  
Change in Focus                :       0.667010 m%0p\Y-/  
~kV/!=  
Number of traceable Monte Carlo files generated: 20 Do9x XK  
YByLoM*  
Nominal     0.54403234 0RzEY!9g+  
Best        0.54384387    Trial     2 W PC]%:L"  
Worst       0.18154684    Trial     4 ),_@WW;k  
Mean        0.35770970 S0$8@"~=  
Std Dev     0.11156454 hy9\57_#  
#j;^\rSv-  
SA:Zc^aV  
Compensator Statistics: 4a&RYx  
Change in back focus: D2#ZpFp"h  
Minimum            :        -1.354815 >:SHV W  
Maximum            :         1.611296 &.3"Uo\#  
Mean               :         0.161872 Xa[.3=bV?  
Standard Deviation :         0.869664 NCveSP  
`4r 3l S  
90% >       0.20977951               9p85Pv [M=  
80% >       0.22748071               53_Hl]#qZ  
50% >       0.38667627               ~"gA,e-)  
20% >       0.46553746               1pVS&0W  
10% >       0.50064115                WpDSg*fk=Y  
1> ?M>vK  
End of Run. DmK57V4L^  
eNh39er  
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 ,};&tR  
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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 .Cv6kgB@c  
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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                 ZmqKQO  
80% >       0.22748071                 1q\\5A<V  
50% >       0.38667627                 Ju
mgb
 
20% >       0.46553746                 >~rTqtKd  
10% >       0.50064115 ,oe <  
2ACCh4(/P  
最后这个数值是MTF值呢，还是MTF的公差？ [Y/} ^  
hR n<em  
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？？？   ,^r9n[M4M  
.#!lP/.eQP  
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  : dQX6(Jj  
90% >       0.20977951                 nF:4}qy\  
80% >       0.22748071                 FxY}m  
50% >       0.38667627                 Hio0HL-  
20% >       0.46553746                 7z,C}-q  
10% >       0.50064115 Y-z(zS^1  
....... Qljpx?E  

kH1~k,|\&K  
/s?`&1v|r  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   Nx;~@  
Mode                : Sensitivities j;r-NCBnz  
Sampling            : 2 >R_&Ouh:  
Nominal Criterion   : 0.54403234 ^7*11%Q  
Test Wavelength     : 0.6328 r;2^#6/Z  
XT*sGM  
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？ .<FH>NW)  
}.(B}/$u  
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