[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 qJjXN+/D  
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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 $;kFuJF  
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图片:2.jpg

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然后运行分析的结果如下： +iS'$2)@  
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Analysis of Tolerances bYPkqitqz  
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File : E:\光学设计资料\zemax练习\f500.ZMX 7_OC&hhL  
Title: Gv ';  
Date : TUE JUN 21 2011 6`KR  
UL9
]LEGG  
Units are Millimeters. Rm@#GP`  
All changes are computed using linear differences. [v@3|@  
]><K8N3Z  
Paraxial Focus compensation only. 06ndW9>wD)  
N>R\,n|I  
WARNING: Solves should be removed prior to tolerancing. k|C~q
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Xk9mJ]31LC  
Mnemonics: fQW1&lFT  
TFRN: Tolerance on curvature in fringes. F$L2bgQR?'  
TTHI: Tolerance on thickness. " ^v/Y  
TSDX: Tolerance on surface decentering in x. $|kq{@<  
TSDY: Tolerance on surface decentering in y. jL9g.q4^  
TSTX: Tolerance on surface tilt in x (degrees). -cgLEl1J  
TSTY: Tolerance on surface tilt in y (degrees). i-.]on
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TIRR: Tolerance on irregularity (fringes). TLcev*  
TIND: Tolerance on Nd index of refraction. \,UpFuU\  
TEDX: Tolerance on element decentering in x. <z'Pj7c[  
TEDY: Tolerance on element decentering in y. Vd+qi~kA  
TETX: Tolerance on element tilt in x (degrees). ;jgk53lo  
TETY: Tolerance on element tilt in y (degrees). 4>x$I9^Y!  
A-n@:` n~  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 1c5+XCr  
NO)Hi)$X6Y  
WARNING: Boundary constraints on compensators will be ignored. jHPkfwfAF  
BlLK6"gJT  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm \ltbiDP2  
Mode                : Sensitivities ^sF/-/ {?U  
Sampling            : 2 B$=oU  
Nominal Criterion   : 0.54403234 DOaTp f  
Test Wavelength     : 0.6328 :EGvI  
(:(Imk;9  
(Q]Ww_r~  
Fields: XY Symmetric Angle in degrees dd+hX$,  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY lfJvN  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 aru;
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Sensitivity Analysis: qjBF]3%t%  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| <E2nM,  
Type                      Value      Criterion        Change          Value      Criterion        Change !_?K(X~/  
Fringe tolerance on surface 1 GhJ<L3  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 vpg*J/1[  
Change in Focus                :      -0.000000                            0.000000 0hNgr'  
Fringe tolerance on surface 2 x/S:)z%X  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ]|xfKDu  
Change in Focus                :       0.000000                            0.000000 ]>9[}'u  
Fringe tolerance on surface 3 .](~dVp%~  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 &Z3u(Eb  
Change in Focus                :      -0.000000                            0.000000 Z|#G+$"QV  
Thickness tolerance on surface 1 wsKOafrV  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 .OM^@V~T  
Change in Focus                :       0.000000                            0.000000 r"_U-w  
Thickness tolerance on surface 2 C8Oh]JF4d  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 5cF7w  
Change in Focus                :       0.000000                           -0.000000 YHp]O+c  
Decenter X tolerance on surfaces 1 through 3 $~ >/_<~  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 .A Dik}o  
Change in Focus                :       0.000000                            0.000000 g`Kh&|GU  
Decenter Y tolerance on surfaces 1 through 3 qg06*$%  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ,I2x&Ys&.  
Change in Focus                :       0.000000                            0.000000 I^GZ9@UE  
Tilt X tolerance on surfaces 1 through 3 (degrees) L^FQ|?*  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 r`\6+Ntb.  
Change in Focus                :       0.000000                            0.000000 #?h-<KQQ  
Tilt Y tolerance on surfaces 1 through 3 (degrees) l!*!)qCB(S  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 H5eGl|Z5]^  
Change in Focus                :       0.000000                            0.000000 u2E}DhV  
Decenter X tolerance on surface 1 ?mp}_x#=  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 \S_o{0ZY}  
Change in Focus                :       0.000000                            0.000000 4[lym,8C  
Decenter Y tolerance on surface 1 ;%Zu[G`C  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 iw{rns  
Change in Focus                :       0.000000                            0.000000 yog(  
Tilt X tolerance on surface (degrees) 1 6n?0MMtR  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ["H2H rI2  
Change in Focus                :       0.000000                            0.000000 xFScj0Y  
Tilt Y tolerance on surface (degrees) 1 Aa`R40yl  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 +zg3/C4 S  
Change in Focus                :       0.000000                            0.000000 0: N
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Decenter X tolerance on surface 2 gSk0#Jt  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Kgw,]E&7  
Change in Focus                :       0.000000                            0.000000 %BwvA_T'Q  
Decenter Y tolerance on surface 2 <{cf'"O7)  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 M^&^g  
Change in Focus                :       0.000000                            0.000000 o_sb+Vn|  
Tilt X tolerance on surface (degrees) 2 5hl!zA?
 
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 v
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Change in Focus                :       0.000000                            0.000000 cz41<SFL
 
Tilt Y tolerance on surface (degrees) 2 3kavzB[  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 tiPZ.a~k  
Change in Focus                :       0.000000                            0.000000 T0X+\&W  
Decenter X tolerance on surface 3 <xlyk/  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Y#zHw<<E  
Change in Focus                :       0.000000                            0.000000 f;%=S:3  
Decenter Y tolerance on surface 3 tx$`1KA  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 c=f;3N  
Change in Focus                :       0.000000                            0.000000 Y~B-dx'V  
Tilt X tolerance on surface (degrees) 3 =eQ'^3a  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 v[4-?7-  
Change in Focus                :       0.000000                            0.000000
LO;6g~(1  
Tilt Y tolerance on surface (degrees) 3 ID~}pEQ  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ncpNesB  
Change in Focus                :       0.000000                            0.000000 GGU>={D)  
Irregularity of surface 1 in fringes P>hR${
KE  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 2f5YkmGc";  
Change in Focus                :       0.000000                            0.000000 Y^QG\6q  
Irregularity of surface 2 in fringes }_oQg_-7e  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 VQI[J  
Change in Focus                :       0.000000                            0.000000 .wPI%5D  
Irregularity of surface 3 in fringes ! JauMR  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 O$7r)B6Cs  
Change in Focus                :       0.000000                            0.000000 Z4dl'v)9  
Index tolerance on surface 1 X`A+/{ H  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 hz+c]K  
Change in Focus                :       0.000000                            0.000000 I&f!>y?,Z  
Index tolerance on surface 2 >W6?!ue_  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 bR<XQHl  
Change in Focus                :       0.000000                           -0.000000 g~
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Worst offenders: MDoV84Fh  
Type                      Value      Criterion        Change :pLaxWus!  
TSTY   2            -0.20000000     0.35349910    -0.19053324 7.tIf <^$P  
TSTY   2             0.20000000     0.35349910    -0.19053324 oml^f~pm  
TSTX   2            -0.20000000     0.35349910    -0.19053324 >J_(~{-sNG  
TSTX   2             0.20000000     0.35349910    -0.19053324 K}vYE7n:  
TSTY   1            -0.20000000     0.42678383    -0.11724851 _2WW0  
TSTY   1             0.20000000     0.42678383    -0.11724851 i,mZg+;w  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ! u9LZ  
TSTX   1             0.20000000     0.42678383    -0.11724851 y\=^pla  
TSTY   3            -0.20000000     0.42861670    -0.11541563 W)AfXy  
TSTY   3             0.20000000     0.42861670    -0.11541563 %?BygG
 
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Estimated Performance Changes based upon Root-Sum-Square method: ]4B&8n!  
Nominal MTF                 :     0.54403234 T~ P<Gq},  
Estimated change            :    -0.36299231 O f]/tdPp  
Estimated MTF               :     0.18104003 'u9y\vUy  
6$t+Q~2G!  
Compensator Statistics: XrJLlH>R4  
Change in back focus: C[CNJ66  
Minimum            :        -0.000000 )O8w'4P5  
Maximum            :         0.000000 QTU$mC]  
Mean               :        -0.000000 hX:yn:P~  
Standard Deviation :         0.000000 p: u@? k  
Oo/@A_JO@  
Monte Carlo Analysis: [*g'Y;W  
Number of trials: 20 }[y_Fr0  
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Initial Statistics: Normal Distribution v?l*jr1-2  
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  Trial       Criterion        Change cvC 7#i[G  
      1     0.42804416    -0.11598818 4Mox
P  
Change in Focus                :      -0.400171 <CWOx&hr  
      2     0.54384387    -0.00018847 \"9ysePI  
Change in Focus                :       1.018470 4$+/7I \  
      3     0.44510003    -0.09893230 _ Gkb[H&RZ  
Change in Focus                :      -0.601922 SP4(yJy&  
      4     0.18154684    -0.36248550 Y?%=6S  
Change in Focus                :       0.920681 bp'\nso/  
      5     0.28665820    -0.25737414 k/i&e~! \  
Change in Focus                :       1.253875 >6|Xvtf  
      6     0.21263372    -0.33139862 FAq9G
-\B  
Change in Focus                :      -0.903878 >gDKkeLD  
      7     0.40051424    -0.14351809 l4y>uZ>a  
Change in Focus                :      -1.354815 5k;}I|rg%  
      8     0.48754161    -0.05649072 91UC>]}H  
Change in Focus                :       0.215922 TVK*l*  
      9     0.40357468    -0.14045766 -kb;
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Change in Focus                :       0.281783 cHJ4[x=  
     10     0.26315315    -0.28087919 Wf=hFc1_@  
Change in Focus                :      -1.048393 d~y]7h|  
     11     0.26120585    -0.28282649 Zbf~E {  
Change in Focus                :       1.017611 zANsv9R~  
     12     0.24033815    -0.30369419 sqO$ka{  
Change in Focus                :      -0.109292 K<v:RbU|[1  
     13     0.37164046    -0.17239188 k)agbx  
Change in Focus                :      -0.692430 pwl7aC+6d  
     14     0.48597489    -0.05805744 WL;2&S/{@  
Change in Focus                :      -0.662040 L(}/W~En  
     15     0.21462327    -0.32940907 {w]L'0ES[  
Change in Focus                :       1.611296 LAuaowE\v  
     16     0.43378226    -0.11025008 j3fq}>=  
Change in Focus                :      -0.640081 8aVj@x$'  
     17     0.39321881    -0.15081353 H<   
Change in Focus                :       0.914906 2 ;Q|h$n  
     18     0.20692530    -0.33710703 '\P+Bu]6&  
Change in Focus                :       0.801607  *LQt=~  
     19     0.51374068    -0.03029165 ySHio;g9  
Change in Focus                :       0.947293 /a\]Dwj5  
     20     0.38013374    -0.16389860 gH0Rd WX  
Change in Focus                :       0.667010 Q@rlqWgU ~  

5KW n>n  
Number of traceable Monte Carlo files generated: 20 ;pG5zRe  
{?X9juc/#  
Nominal     0.54403234 bLO^5`6  
Best        0.54384387    Trial     2 R.rE+gxO1  
Worst       0.18154684    Trial     4 W7w*VD|  
Mean        0.35770970 .8XkB<[wb  
Std Dev     0.11156454 @1V?94T1  
nM`pnR_  
oP:/%  
Compensator Statistics: *
enT2Q  
Change in back focus: FZN}T{<  
Minimum            :        -1.354815 B~%SB/eu  
Maximum            :         1.611296 $HAwd6NI  
Mean               :         0.161872 NYPjN9L  
Standard Deviation :         0.869664 d
V3R)  
$Q`\-  
90% >       0.20977951               G4"n`89LK  
80% >       0.22748071               l>pnY%(A  
50% >       0.38667627               Rc}#4pM8  
20% >       0.46553746               %Z yt;p2  
10% >       0.50064115                p+Fh9N<F9  
T8Ye+eP}  
End of Run. o'ZW  
D\ P-|}  
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 -_

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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 avd`7eH2  
/Mw0<#  
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                 U.J/ "}5`T  
80% >       0.22748071                 #a!qJeWm0  
50% >       0.38667627                 BSg3  
20% >       0.46553746                 IR"=8w#MP  
10% >       0.50064115 f:h<tlob  
27UnH: =  
最后这个数值是MTF值呢，还是MTF的公差？ O2Tna<cR&  
oTf^-29d  
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？？？   +  $/mh  
=Ka :i>  
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  : S&;D  
90% >       0.20977951                 .l~g`
._  
80% >       0.22748071                 zNJ-JIo%  
50% >       0.38667627                 =idZvD  
20% >       0.46553746                 2f.4P]s`T  
10% >       0.50064115 F[==vte|  
....... "QCViR  

\UBQ:+3  
=j S  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   wT-@v,$  
Mode                : Sensitivities (Y$48@x  
Sampling            : 2 q.NvwJ  
Nominal Criterion   : 0.54403234 ouR(l;  
Test Wavelength     : 0.6328 rty&\u@}  
odC}RdN  
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？ Bwg\_:vq
 
Ba /^CS  
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