[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 !sm/BsmL7T  
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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 !EB<N<P"t  
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图片:2.jpg

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然后运行分析的结果如下： LJ(WU)CPc  
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Analysis of Tolerances U@mznf* J  
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File : E:\光学设计资料\zemax练习\f500.ZMX 2L^)k?9>g+  
Title: yS\&2"o  
Date : TUE JUN 21 2011 XZM3zlg*  
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Units are Millimeters. `R[ZY!=+  
All changes are computed using linear differences. U4pIRa)S  
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Paraxial Focus compensation only. @%R<3!3v  
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WARNING: Solves should be removed prior to tolerancing. -[V-f> :  
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Mnemonics: lrT2*$ w3  
TFRN: Tolerance on curvature in fringes. Nujnm$!,Q  
TTHI: Tolerance on thickness. 3`HK^((o  
TSDX: Tolerance on surface decentering in x. yJm"vN  
TSDY: Tolerance on surface decentering in y. \beO5]KS<  
TSTX: Tolerance on surface tilt in x (degrees). \WCQ>c?~  
TSTY: Tolerance on surface tilt in y (degrees). 0Z9DewwP  
TIRR: Tolerance on irregularity (fringes). RwWg:4  
TIND: Tolerance on Nd index of refraction. 8-#%l~dr  
TEDX: Tolerance on element decentering in x. d,"LZ>hNY*  
TEDY: Tolerance on element decentering in y. Q6@<7E]y  
TETX: Tolerance on element tilt in x (degrees). (CmK>"C+  
TETY: Tolerance on element tilt in y (degrees). ATNOb  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. i<m(neX[H  
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WARNING: Boundary constraints on compensators will be ignored. jhNFaBrS  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm fGo4&( U  
Mode                : Sensitivities ~?Q sr  
Sampling            : 2 0M_oFx  
Nominal Criterion   : 0.54403234 &v{Ehkr*  
Test Wavelength     : 0.6328 t;&XIG~  
SiratkP9n7  
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Fields: XY Symmetric Angle in degrees y/lF1{}5  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY j9+$hu#a  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 G'ykcB._  
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Sensitivity Analysis: e#(Ck{e  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| 'Zfg
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Type                      Value      Criterion        Change          Value      Criterion        Change Bh>L"'.2  
Fringe tolerance on surface 1 n+~Dc[  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 g`7XE  
Change in Focus                :      -0.000000                            0.000000 f!Q\M1t)  
Fringe tolerance on surface 2 n|SV)92o1  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 #%0V`BS7n  
Change in Focus                :       0.000000                            0.000000 )O]T}eI  
Fringe tolerance on surface 3 1uw#;3<L  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 kN1MPd4Yh  
Change in Focus                :      -0.000000                            0.000000 $B+|
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Thickness tolerance on surface 1 _'u]{X\k{J  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 >:;dNVz  
Change in Focus                :       0.000000                            0.000000 <j'V}|3  
Thickness tolerance on surface 2
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TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 |?`5~f  
Change in Focus                :       0.000000                           -0.000000 [4Z 31v>  
Decenter X tolerance on surfaces 1 through 3 "/#JC}]  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 H"C'<(4*\  
Change in Focus                :       0.000000                            0.000000 u2V-V#jS  
Decenter Y tolerance on surfaces 1 through 3 mP(3[a_Q  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 w2)Ro:G  
Change in Focus                :       0.000000                            0.000000 qS!r<'F3dP  
Tilt X tolerance on surfaces 1 through 3 (degrees) n/H OP  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 5gszAvOO  
Change in Focus                :       0.000000                            0.000000 3dShznlf_*  
Tilt Y tolerance on surfaces 1 through 3 (degrees) (L_-!=e  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 NWBYpGZx  
Change in Focus                :       0.000000                            0.000000 qtGJJ#^,  
Decenter X tolerance on surface 1 ;SR ESW  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 y}Ky<%A!P  
Change in Focus                :       0.000000                            0.000000 <#63tN9  
Decenter Y tolerance on surface 1 \INH[X#>  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 v\0G`&^1  
Change in Focus                :       0.000000                            0.000000 QFyL2Xes/  
Tilt X tolerance on surface (degrees) 1 &K)8  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ::L2zVq5V  
Change in Focus                :       0.000000                            0.000000 h`fVQN.3  
Tilt Y tolerance on surface (degrees) 1 ~xH&"1  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 f0Q6sVZHa  
Change in Focus                :       0.000000                            0.000000 g;IlS*Ld  
Decenter X tolerance on surface 2 Gn]36~)*H  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 e_vsiT  
Change in Focus                :       0.000000                            0.000000 0P^h6Vat  
Decenter Y tolerance on surface 2 WA{igj@\  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 GN.Oa$  
Change in Focus                :       0.000000                            0.000000 A]1Nm3@  
Tilt X tolerance on surface (degrees) 2 $|4C]Me (  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 zd?@xno  
Change in Focus                :       0.000000                            0.000000 ZSMed(//b  
Tilt Y tolerance on surface (degrees) 2 D)_ C@*q  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 +)T
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Change in Focus                :       0.000000                            0.000000 ,!ZuH?Z  
Decenter X tolerance on surface 3 LzygupxY!  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 R{hX--|j  
Change in Focus                :       0.000000                            0.000000 L\yVE J9x  
Decenter Y tolerance on surface 3 `S&a.k  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 l/$GF|`U  
Change in Focus                :       0.000000                            0.000000 UNI< r  
Tilt X tolerance on surface (degrees) 3 *P()&}JK  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Er~17$b  
Change in Focus                :       0.000000                            0.000000 XGlt^<`  
Tilt Y tolerance on surface (degrees) 3 eh#37*-  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 C3AWXO ^  
Change in Focus                :       0.000000                            0.000000 l}{{7~C`  
Irregularity of surface 1 in fringes We+rFk1ddt  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ~iw&^p|=K  
Change in Focus                :       0.000000                            0.000000 h@)U,&  
Irregularity of surface 2 in fringes -"(*'hD  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 xQ?>72grP  
Change in Focus                :       0.000000                            0.000000 [)H 6`w  
Irregularity of surface 3 in fringes 7AG|'s['=  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ^<]'?4m]  
Change in Focus                :       0.000000                            0.000000 e r" w{  
Index tolerance on surface 1 \lL[08G  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 r4.6W[|d  
Change in Focus                :       0.000000                            0.000000 Nk~}aj  
Index tolerance on surface 2 V>$( N/1  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 [f6uwp  
Change in Focus                :       0.000000                           -0.000000 <+8'H:wz  
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Worst offenders: &K[*vyD  
Type                      Value      Criterion        Change :I"CQ C[Z  
TSTY   2            -0.20000000     0.35349910    -0.19053324 ROO*/OOd  
TSTY   2             0.20000000     0.35349910    -0.19053324 dQut8>0&  
TSTX   2            -0.20000000     0.35349910    -0.19053324 *0WVrM06?  
TSTX   2             0.20000000     0.35349910    -0.19053324 Z:b?^u4.  
TSTY   1            -0.20000000     0.42678383    -0.11724851 OhF55,[  
TSTY   1             0.20000000     0.42678383    -0.11724851 :\](m64z;  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ~%hdy@  
TSTX   1             0.20000000     0.42678383    -0.11724851 uf(ayDE  
TSTY   3            -0.20000000     0.42861670    -0.11541563 P\7DA4]  
TSTY   3             0.20000000     0.42861670    -0.11541563 9O[IR)
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Estimated Performance Changes based upon Root-Sum-Square method: o
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Nominal MTF                 :     0.54403234 BU nujC  
Estimated change            :    -0.36299231 >Wg=
Tuef  
Estimated MTF               :     0.18104003 M!mL/*G@YE  
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Compensator Statistics: j KU2  
Change in back focus: `RTxc  
Minimum            :        -0.000000 !0 7jr%-~  
Maximum            :         0.000000 $m`Dyu  
Mean               :        -0.000000 G,8mFH  
Standard Deviation :         0.000000 dg D-"-O  
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Monte Carlo Analysis: ;W|kc</R*  
Number of trials: 20 ! FcGa  
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Initial Statistics: Normal Distribution xBHf~:!  

=g% L$b<i  
  Trial       Criterion        Change iUKjCq02  
      1     0.42804416    -0.11598818 OjU{
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Change in Focus                :      -0.400171 $KcAB0 B8  
      2     0.54384387    -0.00018847 t]c<HDCK  
Change in Focus                :       1.018470 t@KTiJI ]  
      3     0.44510003    -0.09893230 opX07~1  
Change in Focus                :      -0.601922 ITPE2x  
      4     0.18154684    -0.36248550 o.s'0xP]  
Change in Focus                :       0.920681 :J;U~emq
 
      5     0.28665820    -0.25737414 Gz`Jzh j  
Change in Focus                :       1.253875 ;R$G.5h  
      6     0.21263372    -0.33139862 @kXuC<  
Change in Focus                :      -0.903878 (}#&HE
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      7     0.40051424    -0.14351809 l;$F[/3a  
Change in Focus                :      -1.354815 N$=YL @m8  
      8     0.48754161    -0.05649072 =^"Sx??V  
Change in Focus                :       0.215922 f/\!=sa:  
      9     0.40357468    -0.14045766 8X;?fjl`"  
Change in Focus                :       0.281783 lM-\:Q!
  
     10     0.26315315    -0.28087919 \Y


#  
Change in Focus                :      -1.048393 "|\hTRQ  
     11     0.26120585    -0.28282649 lL}6IZ5sb  
Change in Focus                :       1.017611 ]4rmQAS7"  
     12     0.24033815    -0.30369419 as07~Xvp-  
Change in Focus                :      -0.109292 $W._FAAJ#  
     13     0.37164046    -0.17239188 `&;#A*C
0  
Change in Focus                :      -0.692430 q NGR6i  
     14     0.48597489    -0.05805744 kHg|!  
Change in Focus                :      -0.662040 EeaJ
UK]z9  
     15     0.21462327    -0.32940907 z$<=8ox8e  
Change in Focus                :       1.611296 ]36SF5<0r  
     16     0.43378226    -0.11025008 ]t[%.^5#  
Change in Focus                :      -0.640081 mQj#\<*  
     17     0.39321881    -0.15081353 #v c+;`X  
Change in Focus                :       0.914906 QW..=}pL  
     18     0.20692530    -0.33710703 j;$f[@0o  
Change in Focus                :       0.801607 }0~$^J  
     19     0.51374068    -0.03029165 (o>N*?,}  
Change in Focus                :       0.947293 5{H)r  
     20     0.38013374    -0.16389860 V .Kjcy  
Change in Focus                :       0.667010 'O%*:'5k  
<XL%*  
Number of traceable Monte Carlo files generated: 20 osc8;B/  
I!zoo[/)%  
Nominal     0.54403234 +;,{`*W+N  
Best        0.54384387    Trial     2 e.\>GwM  
Worst       0.18154684    Trial     4 h]zok}$  
Mean        0.35770970 l6zAMyau5  
Std Dev     0.11156454 3P_.SF  
PvKG
B01_  
/OKp(u;)z  
Compensator Statistics: 4Q+,
_iP  
Change in back focus: eKP>}`  
Minimum            :        -1.354815 AyJl
:aN^  
Maximum            :         1.611296 \Y,P  
Mean               :         0.161872 Jq1oQu|rs  
Standard Deviation :         0.869664 df{?E):  
IO7z}![V;  
90% >       0.20977951               e{6wFN  
80% >       0.22748071               =K@LEZZ'/<  
50% >       0.38667627              
[w](x  
20% >       0.46553746               *gmc6xY  
10% >       0.50064115                <v ub Q4  
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End of Run. azZ|T{S  
_9oKW;7f7  
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 mR.j8pi  

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 >MJ%6A>  
=Vh]{y~$  
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                 @"cnPLh&
 
80% >       0.22748071                 jHMP"(]  
50% >       0.38667627                 AU*]D@H  
20% >       0.46553746                 dyqk[$(  
10% >       0.50064115 HH*,Oe  

:wzbD,/M  
最后这个数值是MTF值呢，还是MTF的公差？ YTgT2w  
=PU@'OG  
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？？？   yyPj!<.MGP  
<)cmI .J3  
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  : k.0pPl  
90% >       0.20977951                 k|^nrjStC  
80% >       0.22748071                 6~+?DIc  
50% >       0.38667627                 *!(?=9[  
20% >       0.46553746                 ;/nR[sibN  
10% >       0.50064115 \=g%W^i  
....... i `8Y/$aT  

}S
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QeAkuqT'[  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   fx4X!(w!B  
Mode                : Sensitivities .!t'&eV  
Sampling            : 2 Vi>kK|\b  
Nominal Criterion   : 0.54403234 7,"1%^tU  
Test Wavelength     : 0.6328 2\!.w^7'^T  
/SD2e@x{U  
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？ 3C8'@-U  
O@_)]z?jUc  
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