[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 rs&]4
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图片:1.JPG

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然后添加了默认公差分析，基本没变 :Ha/^cC/3  
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图片:2.jpg

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然后运行分析的结果如下： 2Je$SE8  

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Analysis of Tolerances A6N6e\*  
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File : E:\光学设计资料\zemax练习\f500.ZMX oL<#9)+2*  
Title: m&.LJ*uM\K  
Date : TUE JUN 21 2011 X'Ss#s>g  
bx0.(Nv/X  
Units are Millimeters. y+k_&ss  
All changes are computed using linear differences. Jh26!%<Bl  
h)KHc/S  
Paraxial Focus compensation only. ')X(P>  
J1?

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WARNING: Solves should be removed prior to tolerancing. {i5?R,a)  
TR"C<&y$j  
Mnemonics: [2%[~&4  
TFRN: Tolerance on curvature in fringes. =kjKK
  
TTHI: Tolerance on thickness. \iuR+I  
TSDX: Tolerance on surface decentering in x. _5oTNL2  
TSDY: Tolerance on surface decentering in y. z5+Pi:1w  
TSTX: Tolerance on surface tilt in x (degrees). ]K=#>rZrB  
TSTY: Tolerance on surface tilt in y (degrees). LD$5KaOW  
TIRR: Tolerance on irregularity (fringes). ~P4C`Q1PT#  
TIND: Tolerance on Nd index of refraction. B VBn.ut  
TEDX: Tolerance on element decentering in x. zTz}H*U  
TEDY: Tolerance on element decentering in y. /x<g$!`X  
TETX: Tolerance on element tilt in x (degrees). gD,&TW  
TETY: Tolerance on element tilt in y (degrees). j#NyNv(jE1  
]%\,.&=hT  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. @KN+)qP  
,
6)N.  
WARNING: Boundary constraints on compensators will be ignored. VF%QM;I[Rc  
aO6\e>  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm o`U}uqrO  
Mode                : Sensitivities %pC<T*f  
Sampling            : 2 !FEc:qH  
Nominal Criterion   : 0.54403234 6x+ujUBkK  
Test Wavelength     : 0.6328 i'>6Qo  
3uL f0D  
o3J#hQrl  
Fields: XY Symmetric Angle in degrees ({
f}Z-%  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY _jWs(OmJ  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 k[6J;/  
Ltlp9 S  
Sensitivity Analysis: /<LZt<K  
J2mHPVA3  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| /x VHd  
Type                      Value      Criterion        Change          Value      Criterion        Change UhxM85M;x  
Fringe tolerance on surface 1 _y@28t  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 c4JV~VS+  
Change in Focus                :      -0.000000                            0.000000 <2$vo  
Fringe tolerance on surface 2 Q@D7\<t  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 du65=w4E!  
Change in Focus                :       0.000000                            0.000000 %I1@{>OxG  
Fringe tolerance on surface 3 { 3G  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 L9GLjRp-  
Change in Focus                :      -0.000000                            0.000000 ,7{|90'V<  
Thickness tolerance on surface 1 wk(25(1q  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Y(Q 0m|3P  
Change in Focus                :       0.000000                            0.000000 /6x&%G:m#  
Thickness tolerance on surface 2 !09)WtsEfx  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 C@(@n!o:!  
Change in Focus                :       0.000000                           -0.000000 {)YbksrJ{  
Decenter X tolerance on surfaces 1 through 3 !_QI<=X  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ;pnF%co9  
Change in Focus                :       0.000000                            0.000000 Z,&O8Jelf  
Decenter Y tolerance on surfaces 1 through 3 iw@rW5%'~  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 A8{jEJ=)P  
Change in Focus                :       0.000000                            0.000000 .OPknC  
Tilt X tolerance on surfaces 1 through 3 (degrees) Tz
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TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 RS5<] dy  
Change in Focus                :       0.000000                            0.000000 &@~K8*tmK  
Tilt Y tolerance on surfaces 1 through 3 (degrees) Cxf K(F  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 0~|0D#klB  
Change in Focus                :       0.000000                            0.000000 M/3;-g  
Decenter X tolerance on surface 1 c&['T+X  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 v%tjZ5x  
Change in Focus                :       0.000000                            0.000000 Kb~nC6yJc  
Decenter Y tolerance on surface 1 |t,sK aL  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 &l(T},-X  
Change in Focus                :       0.000000                            0.000000 _O`prX.:B0  
Tilt X tolerance on surface (degrees) 1 <)qa{,GX\  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 )nUdU = m  
Change in Focus                :       0.000000                            0.000000 `<XS5h h=  
Tilt Y tolerance on surface (degrees) 1 HqGI.  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 l*CulVX  
Change in Focus                :       0.000000                            0.000000 dOjly,!  
Decenter X tolerance on surface 2 6pt,]FlU  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 vYg
Ju-Sl  
Change in Focus                :       0.000000                            0.000000 B'Yx/c&n  
Decenter Y tolerance on surface 2 >AEp\*  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 K\xz|Gq  
Change in Focus                :       0.000000                            0.000000
:~-:  
Tilt X tolerance on surface (degrees) 2 /b+~BvTh  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 [(X~C*VdxM  
Change in Focus                :       0.000000                            0.000000 Z+xkN  
Tilt Y tolerance on surface (degrees) 2 <ZC.9  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 fB2ILRc  
Change in Focus                :       0.000000                            0.000000 d59rq<yI  
Decenter X tolerance on surface 3 >d 5-if  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ?1Nz ,Lc$  
Change in Focus                :       0.000000                            0.000000 n:AZ(f   
Decenter Y tolerance on surface 3 ;>,B(Xz4i  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 +y| B"}x  
Change in Focus                :       0.000000                            0.000000 b8!oZ~K
 
Tilt X tolerance on surface (degrees) 3 rO87V!Cj  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 [^"}jbn/  
Change in Focus                :       0.000000                            0.000000 {_7hX`p  
Tilt Y tolerance on surface (degrees) 3 0\mf1{$"!7  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 g *5_m(H  
Change in Focus                :       0.000000                            0.000000 <IrhR,@M,L  
Irregularity of surface 1 in fringes 4LSsWO<@  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 !@C-|=9G  
Change in Focus                :       0.000000                            0.000000 W ?x~"-*  
Irregularity of surface 2 in fringes 6(rm%c  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 T;u
;r@R/  
Change in Focus                :       0.000000                            0.000000 T{prCM  
Irregularity of surface 3 in fringes |Iy;_8c  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 3.movkj  
Change in Focus                :       0.000000                            0.000000 xI,3(A.  
Index tolerance on surface 1 LWrYKi  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 L7ae6#5.  
Change in Focus                :       0.000000                            0.000000 2)EqqX[D  
Index tolerance on surface 2 3MQHoxX  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Csyh 'v  
Change in Focus                :       0.000000                           -0.000000 2j f!o  
fR1LVLU  
Worst offenders: 9>{fsy  
Type                      Value      Criterion        Change m%9Yo%l~  
TSTY   2            -0.20000000     0.35349910    -0.19053324 uQG|r)  
TSTY   2             0.20000000     0.35349910    -0.19053324 '`8 ^P  
TSTX   2            -0.20000000     0.35349910    -0.19053324 " ILF!z  
TSTX   2             0.20000000     0.35349910    -0.19053324 S{llpp{E  
TSTY   1            -0.20000000     0.42678383    -0.11724851 (XK,g;RoEn  
TSTY   1             0.20000000     0.42678383    -0.11724851 6{I7=.V  
TSTX   1            -0.20000000     0.42678383    -0.11724851 bI.hG32  
TSTX   1             0.20000000     0.42678383    -0.11724851 SX,$$43  
TSTY   3            -0.20000000     0.42861670    -0.11541563 k7uX!}  
TSTY   3             0.20000000     0.42861670    -0.11541563 2K4Xu9-i:b  
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Estimated Performance Changes based upon Root-Sum-Square method: S6bW r0XR  
Nominal MTF                 :     0.54403234 hUpour |b  
Estimated change            :    -0.36299231 fAh|43Y*a  
Estimated MTF               :     0.18104003 Le83[E*i  
jd]L}%ax  
Compensator Statistics: "yymnIQ3u  
Change in back focus: I(UK9H{0$  
Minimum            :        -0.000000 ^
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Maximum            :         0.000000 N_G&nw  
Mean               :        -0.000000 kNP-+o  
Standard Deviation :         0.000000 'qVlq5.  
ESviWCh0Fl  
Monte Carlo Analysis: [XPAI["  
Number of trials: 20 X$<pt,}%  
PY|zN|  
Initial Statistics: Normal Distribution ll}_EUF|  
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  Trial       Criterion        Change FOD'&Yb&  
      1     0.42804416    -0.11598818 ^5Y<evjm  
Change in Focus                :      -0.400171 J"#6m&R_q  
      2     0.54384387    -0.00018847 '*[7O2\%/  
Change in Focus                :       1.018470 WiH8j$;xu  
      3     0.44510003    -0.09893230 A}!
A*z<9  
Change in Focus                :      -0.601922 SN|!FW.*:  
      4     0.18154684    -0.36248550 6l,6k~Z9  
Change in Focus                :       0.920681 h0-.9ym  
      5     0.28665820    -0.25737414 Wrbv<8}%c  
Change in Focus                :       1.253875 kM-8%a2i  
      6     0.21263372    -0.33139862 EFi
VwH  
Change in Focus                :      -0.903878 ys!O"=OJ  
      7     0.40051424    -0.14351809 ?taC !{  
Change in Focus                :      -1.354815 '`tFZfT  
      8     0.48754161    -0.05649072 NXLb'm
H~  
Change in Focus                :       0.215922 xqdkc^b  
      9     0.40357468    -0.14045766 A46dtFD{  
Change in Focus                :       0.281783 %cs"PS  
     10     0.26315315    -0.28087919 Qraq{'3  
Change in Focus                :      -1.048393 #++:`Z  
     11     0.26120585    -0.28282649 wo62R&ac  
Change in Focus                :       1.017611 IUAe6  
     12     0.24033815    -0.30369419 Jj%xLv%  
Change in Focus                :      -0.109292 l`75BR  
     13     0.37164046    -0.17239188 6x5Q*^w  
Change in Focus                :      -0.692430 :bo2H[U+  
     14     0.48597489    -0.05805744 <=!t!_  
Change in Focus                :      -0.662040 DmWa!5  
     15     0.21462327    -0.32940907 +dCR$<e9
r  
Change in Focus                :       1.611296 alxIc.[  
     16     0.43378226    -0.11025008 Bd*Ok]  
Change in Focus                :      -0.640081 Na]ITCVR  
     17     0.39321881    -0.15081353 @WXRZEz  
Change in Focus                :       0.914906 #_Uo^Mw  
     18     0.20692530    -0.33710703 T&1-gswr:  
Change in Focus                :       0.801607 A+Bq5mik  
     19     0.51374068    -0.03029165 .`*(#9(M9  
Change in Focus                :       0.947293 +
S5uxO  
     20     0.38013374    -0.16389860 ao7M(f  
Change in Focus                :       0.667010 /_JR7BB^X,  
}ub>4N[  
Number of traceable Monte Carlo files generated: 20 8xj_)=(sV!  
6ImW|%  
Nominal     0.54403234 z$Z%us>io  
Best        0.54384387    Trial     2 Z3<lJk\Y  
Worst       0.18154684    Trial     4 3Zz_wr6  
Mean        0.35770970 =C#z Px,  
Std Dev     0.11156454 aR
)UHxvX  
hQ)?LPUB  
<%4pvn8d?&  
Compensator Statistics: `
&)  
Change in back focus: )-6>!6hZ  
Minimum            :        -1.354815 ,LOx!  
Maximum            :         1.611296 '[[IalQ?  
Mean               :         0.161872 ?!t
O'}?  
Standard Deviation :         0.869664 ?t;,Nk`jx  
YY>&R'3[  
90% >       0.20977951               [ P*L`F  
80% >       0.22748071               >0:=<RW  
50% >       0.38667627               7wrRIeES  
20% >       0.46553746               lBG5~<NT  
10% >       0.50064115                3"HEXJM
c  
8XfOMf~d`  
End of Run. wlwgYAD  
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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 wO%617Av  

图片:3.JPG

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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 W$}2 $}r0U  
ZSwhI@|  
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                 6(B[(Af  
80% >       0.22748071                 1mv8[^pF  
50% >       0.38667627                 'V4B{n7h  
20% >       0.46553746                 "6WE6zq  
10% >       0.50064115 F@xKL;'N74  
ZyrVv\'  
最后这个数值是MTF值呢，还是MTF的公差？ q$B|a5a?  
.A7ON1lc^C  
也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   g|
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W>$mU&ew[  
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  : {GQRJ8m  
90% >       0.20977951                 ?&$BQK  
80% >       0.22748071                 cy( WD
#^  
50% >       0.38667627                 E3 aj  
20% >       0.46553746                 gP>`DPgb^  
10% >       0.50064115 K`twbTU  
....... mI3 \n  

njBK{  
PG'+vl  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   _Rm1-,3  
Mode                : Sensitivities rCgoU xW`  
Sampling            : 2 C *U,$8j|}  
Nominal Criterion   : 0.54403234 NmZowh$M  
Test Wavelength     : 0.6328  @1O.;  
VL| q`n  
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？ DNy 6Kw  
XPsRa[08WK  
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