[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 %zQ2:iT5@=  
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然后添加了默认公差分析，基本没变 4#@0T"T~M  
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Dauo(Uhuo  
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然后运行分析的结果如下： =U_@zDD@V  
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Analysis of Tolerances x`3.Wu\  
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File : E:\光学设计资料\zemax练习\f500.ZMX 0gi}"v  
Title: ASM1Y]'Z  
Date : TUE JUN 21 2011 _<Vg[-:1  
`#<eA*^g5  
Units are Millimeters. J{x##p<F$  
All changes are computed using linear differences. |vT=Nnu  
c0hdLl;5  
Paraxial Focus compensation only. i59k"pNm  
y|LXDq4Wj  
WARNING: Solves should be removed prior to tolerancing. #PPsRKj3c  
ugRV5bUk  
Mnemonics: KK .cDAR  
TFRN: Tolerance on curvature in fringes. /Sh4pu"'  
TTHI: Tolerance on thickness. BDnBBbBrz  
TSDX: Tolerance on surface decentering in x. A1 b6Zt  
TSDY: Tolerance on surface decentering in y. A7e_w 7?a  
TSTX: Tolerance on surface tilt in x (degrees). p+5#dbyr  
TSTY: Tolerance on surface tilt in y (degrees). :.C)7( 8S  
TIRR: Tolerance on irregularity (fringes). GdL4|xv  
TIND: Tolerance on Nd index of refraction. ":z@c,  
TEDX: Tolerance on element decentering in x. #Z#_!o  
TEDY: Tolerance on element decentering in y. eKS:7:X  
TETX: Tolerance on element tilt in x (degrees). >sB=\  
TETY: Tolerance on element tilt in y (degrees). d`<#}-nh  
X.:
_"+I;  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. >02i8:Tp5K  
%PSz o8.l  
WARNING: Boundary constraints on compensators will be ignored. X%*brl$D  
~F=#}6kg_  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm IcO9V<Q|  
Mode                : Sensitivities R|6RI}  
Sampling            : 2  -kV|  
Nominal Criterion   : 0.54403234 ]Oig..LJ  
Test Wavelength     : 0.6328 XC57];-  
Qdh"X^^  
B44]NsYks~  
Fields: XY Symmetric Angle in degrees \qRjXadj  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY
R20a(4m  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 /{49I,  
60(}_%  
Sensitivity Analysis: \>w@=bq26  
]5aux >.n  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| Y+}OClS  
Type                      Value      Criterion        Change          Value      Criterion        Change 5Q2T
T $P  
Fringe tolerance on surface 1 !Q<8c =f  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 HFpjNR  
Change in Focus                :      -0.000000                            0.000000 xuw//F  
Fringe tolerance on surface 2 _D!M nTK  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 mNGb} lR  
Change in Focus                :       0.000000                            0.000000 l;.[W|  
Fringe tolerance on surface 3 pqRO[XEp2  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 uQXs>JuD  
Change in Focus                :      -0.000000                            0.000000 q{jk.:;'  
Thickness tolerance on surface 1 ,S7~=S  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 >MBn2(\B;  
Change in Focus                :       0.000000                            0.000000 P6.)P|n7=  
Thickness tolerance on surface 2 6kgCS{MZ  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 '33Yl+h  
Change in Focus                :       0.000000                           -0.000000 n-L]YrDPK[  
Decenter X tolerance on surfaces 1 through 3 z{7,.S u  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 7"h=MB_  
Change in Focus                :       0.000000                            0.000000 UEx(~>  
Decenter Y tolerance on surfaces 1 through 3 >'BU*  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 i2`.#YJ&v  
Change in Focus                :       0.000000                            0.000000 \= )[  
Tilt X tolerance on surfaces 1 through 3 (degrees) x`/m>~_  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ,.1&Ff
)S  
Change in Focus                :       0.000000                            0.000000 9;m#>a@Y  
Tilt Y tolerance on surfaces 1 through 3 (degrees) /It.>1~2@  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Bh.6:9{  
Change in Focus                :       0.000000                            0.000000 =6L:I
x  
Decenter X tolerance on surface 1 =rs=8Ty?S  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 vQ9xG))  
Change in Focus                :       0.000000                            0.000000 o3(|FN  
Decenter Y tolerance on surface 1 :7 s#5b  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 PW~cqo B71  
Change in Focus                :       0.000000                            0.000000 Q>#)LHX  
Tilt X tolerance on surface (degrees) 1 6c;
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TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 XACEt~y  
Change in Focus                :       0.000000                            0.000000 J~nJpUyP*  
Tilt Y tolerance on surface (degrees) 1 p~k`Z^xY$  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 C {H'  
Change in Focus                :       0.000000                            0.000000 #I*ht0++  
Decenter X tolerance on surface 2 s\n,Z?m  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 T3B|r<>I  
Change in Focus                :       0.000000                            0.000000 z}Mb4{d1  
Decenter Y tolerance on surface 2 V2<k0@y  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 L?/M2zc9Y  
Change in Focus                :       0.000000                            0.000000 %te'J G<  
Tilt X tolerance on surface (degrees) 2 $6]x,Ct  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324  9\W5
 
Change in Focus                :       0.000000                            0.000000 l[!C-Tq  
Tilt Y tolerance on surface (degrees) 2 d}^:E  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 SFm.<^6  
Change in Focus                :       0.000000                            0.000000 o@Cn
_p^X  
Decenter X tolerance on surface 3 b;t}7.V'%  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ix_$Ok  
Change in Focus                :       0.000000                            0.000000 #L
)4|  
Decenter Y tolerance on surface 3 E<fwl1<88  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 &_Xv:?  
Change in Focus                :       0.000000                            0.000000 'f$?/5@@  
Tilt X tolerance on surface (degrees) 3 njx\$,ruN  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 !x!L&p  
Change in Focus                :       0.000000                            0.000000 } cH"lppX  
Tilt Y tolerance on surface (degrees) 3 -`ys pE0?  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 pCud` :o"  
Change in Focus                :       0.000000                            0.000000 N]P*6sf-6  
Irregularity of surface 1 in fringes l1.Aw|'D  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 UmHJ/DI@  
Change in Focus                :       0.000000                            0.000000 =[CS2VQ'  
Irregularity of surface 2 in fringes i}
&mz~  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 hdNZ":1s  
Change in Focus                :       0.000000                            0.000000 u/c~PxC  
Irregularity of surface 3 in fringes |^&2zyUj/  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 p~{%f#V  
Change in Focus                :       0.000000                            0.000000 2l}FgD  
Index tolerance on surface 1
tg%WVy2  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 GE|^ryh  
Change in Focus                :       0.000000                            0.000000 2>_LX!kyP]  
Index tolerance on surface 2 nR|u
Aw  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 -u
Y:2  
Change in Focus                :       0.000000                           -0.000000 5|B(K @<  
qI/r_  
Worst offenders: V IRv  
Type                      Value      Criterion        Change N*4IxY'vX/  
TSTY   2            -0.20000000     0.35349910    -0.19053324 C&#KdvN/r  
TSTY   2             0.20000000     0.35349910    -0.19053324 EKJc)|8  
TSTX   2            -0.20000000     0.35349910    -0.19053324 #I@[^^Vw  
TSTX   2             0.20000000     0.35349910    -0.19053324 onypwfIk)t  
TSTY   1            -0.20000000     0.42678383    -0.11724851 ObHz+qRG  
TSTY   1             0.20000000     0.42678383    -0.11724851 07WIa@Q  
TSTX   1            -0.20000000     0.42678383    -0.11724851 {bsr 9.k(  
TSTX   1             0.20000000     0.42678383    -0.11724851 Wa
Z@  
TSTY   3            -0.20000000     0.42861670    -0.11541563 tS.b5$Q  
TSTY   3             0.20000000     0.42861670    -0.11541563 J*4_|j;Z-E  
d=u%"36y  
Estimated Performance Changes based upon Root-Sum-Square method: UBk 5O&  
Nominal MTF                 :     0.54403234 "u$]q1S  
Estimated change            :    -0.36299231 e+[J[<8  
Estimated MTF               :     0.18104003 dUVTQ18F  
Fl|&eO,e  
Compensator Statistics: j$i8@]  
Change in back focus: 7-0twq
 
Minimum            :        -0.000000 ~}9H<K3V  
Maximum            :         0.000000 Jj _+YfIM  
Mean               :        -0.000000
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Standard Deviation :         0.000000 ,i((;/O6  
Ognq*[om  
Monte Carlo Analysis: _ .  
Number of trials: 20 [g 68O*  
\(7#N<-  
Initial Statistics: Normal Distribution w5JC2  
w+TuS).  
  Trial       Criterion        Change )k<~}wvQ0  
      1     0.42804416    -0.11598818 l4.@YYzbp.  
Change in Focus                :      -0.400171 TKutO0  
      2     0.54384387    -0.00018847 KKTfxNxJn  
Change in Focus                :       1.018470 4Fc1'  
      3     0.44510003    -0.09893230 @T=HcUP)  
Change in Focus                :      -0.601922 vT<wd
#  
      4     0.18154684    -0.36248550 4]Nr$FY  
Change in Focus                :       0.920681 zpQ/E  
      5     0.28665820    -0.25737414 x/q$RcDOm  
Change in Focus                :       1.253875 -(,6w?  
      6     0.21263372    -0.33139862 YY>Uf1}*9  
Change in Focus                :      -0.903878 OL+40J  
      7     0.40051424    -0.14351809 NGD2z.  
Change in Focus                :      -1.354815 +P;D}1B#I?  
      8     0.48754161    -0.05649072 L|Gk}n  
Change in Focus                :       0.215922 ialk6i![  
      9     0.40357468    -0.14045766 ,]N%(>ot  
Change in Focus                :       0.281783 g<5Pc,  
     10     0.26315315    -0.28087919 +}Wo=R
}  
Change in Focus                :      -1.048393 FQ ^^6Rl  
     11     0.26120585    -0.28282649 g\h7`-#t  
Change in Focus                :       1.017611 49kia!FR  
     12     0.24033815    -0.30369419 w)>z3Lm  
Change in Focus                :      -0.109292 G~L#vAY  
     13     0.37164046    -0.17239188 <Q~7a hF  
Change in Focus                :      -0.692430 cr;`
0  
     14     0.48597489    -0.05805744 H<Taf%JT  
Change in Focus                :      -0.662040 8$olP:d  
     15     0.21462327    -0.32940907 %*; 8m'  
Change in Focus                :       1.611296 3@bjIX`=H  
     16     0.43378226    -0.11025008 s+~Slgl  
Change in Focus                :      -0.640081 90v18k  
     17     0.39321881    -0.15081353 h>Pg:*N,(  
Change in Focus                :       0.914906 [gY__  
     18     0.20692530    -0.33710703 r1?FH2Ns  
Change in Focus                :       0.801607 vrDRSc6_  
     19     0.51374068    -0.03029165 ~7H.<kJt  
Change in Focus                :       0.947293 Q]:%Jj2  
     20     0.38013374    -0.16389860 4}FfHgpQ  
Change in Focus                :       0.667010 a<36`#N  
V1U[p3J-S  
Number of traceable Monte Carlo files generated: 20 NX",e=  
1g.9R@Kc$  
Nominal     0.54403234 NUtyUv  
Best        0.54384387    Trial     2 Ox'.sq4  
Worst       0.18154684    Trial     4 N!~NQ-Re'  
Mean        0.35770970 HwK "qq-  
Std Dev     0.11156454 p~co!d.q/}  
n?tAa|_  
zSXC  
Compensator Statistics: [63;8l
}  
Change in back focus: pa73`Ca]  
Minimum            :        -1.354815 >Tx;<G  
Maximum            :         1.611296 =^M t#h."  
Mean               :         0.161872 JOq<lb=  
Standard Deviation :         0.869664 aH"c0A  
.AW*7Pp`f  
90% >       0.20977951               :_zKUv]  
80% >       0.22748071               C(Y6t1  
50% >       0.38667627               :.Sc[UI0  
20% >       0.46553746               FI5C&d5d  
10% >       0.50064115                DNe^_v)]|  
@>j \~<%  
End of Run. *xC '  
8hp]+k_y  
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 g7F Z -  
:W.(,65c  
mjHY-lK  
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 2ow\d b  
1ouTZ'c?  
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                 =qvU9p2o  
80% >       0.22748071                 Dn?L  
50% >       0.38667627                 5P!17.W'u  
20% >       0.46553746                 :u0433z:  
10% >       0.50064115 6dUP's_  

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最后这个数值是MTF值呢，还是MTF的公差？ W| p?KJk)  
RYNzTA  
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？？？   5sE}B8 mF  
/'(P{O>{j  
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  : ,y.0Cb0  
90% >       0.20977951                
b6lL8KOu  
80% >       0.22748071                 0ePZxOSjD  
50% >       0.38667627                 CeQcnJU  
20% >       0.46553746                 pd6d(  
10% >       0.50064115 `uU@(  
....... wKYfqNCH  

ivm.ng[  
7mN?;X33  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   E.}Zmr#H  
Mode                : Sensitivities 1@y?OWC  
Sampling            : 2 y8L:nnSj  
Nominal Criterion   : 0.54403234 >|s=l`"Xz  
Test Wavelength     : 0.6328 #GF1MFkoS  
qg O)@B+  
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？ HCu1vjU(]  
.D)}MyKnu  
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