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    [讨论]公差分析结果的疑问 [复制链接]

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    离线sansummer
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    只看楼主 倒序阅读 楼主  发表于: 2011-06-21
    我现在在初学zemax的公差分析，找了一个双胶合透镜 tc# rL   
    I@x*>  
    _39b8s {  
    w#"c5w~  
    然后添加了默认公差分析，基本没变 ,rTR |>Z  
    j[=f;&1  
    h3JIiwv0!  
    e4?}#6RF  
    然后运行分析的结果如下： Lqz}h-Ei  
    XFM6.ye  
    Analysis of Tolerances %=NqxF>>  
    sg9ZYWcL  
    File : E:\光学设计资料\zemax练习\f500.ZMX Be}Cj(C  
    Title: 1FY^_dvH  
    Date : TUE JUN 21 2011 W]reQ&<Z  
    $R"~BZbt;  
    Units are Millimeters. \)LY_D:  
    All changes are computed using linear differences. #>!!#e!*  
    I-+D+DhRx  
    Paraxial Focus compensation only. qt3 \*U7x  
    Bv/v4(G5g  
    WARNING: Solves should be removed prior to tolerancing. #<l ;YT8  
    dyu~T{  
    Mnemonics: z+wBZn{0I  
    TFRN: Tolerance on curvature in fringes. 33 N5>}  
    TTHI: Tolerance on thickness. 3pl.<;9r  
    TSDX: Tolerance on surface decentering in x. |n* I}w^  
    TSDY: Tolerance on surface decentering in y. =(@J+Ou  
    TSTX: Tolerance on surface tilt in x (degrees). *UEo&B2+  
    TSTY: Tolerance on surface tilt in y (degrees). *jDzh;H!w  
    TIRR: Tolerance on irregularity (fringes). Ee4oTU5Mb  
    TIND: Tolerance on Nd index of refraction. _D z4 }:9  
    TEDX: Tolerance on element decentering in x. QvqX3FU  
    TEDY: Tolerance on element decentering in y. \t )Zk2  
    TETX: Tolerance on element tilt in x (degrees). LoNz 1KJL  
    TETY: Tolerance on element tilt in y (degrees). t'7)aJMP  
    |%TH|?kB  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Jd)|== yD  
    i) :Q{[D  
    WARNING: Boundary constraints on compensators will be ignored. Y$% Ze]~  
    , gz:2UY#  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm &4p:2,|r9  
    Mode                : Sensitivities j63w(Jv/  
    Sampling            : 2 UJlKw `4  
    Nominal Criterion   : 0.54403234 <!4'?K-N  
    Test Wavelength     : 0.6328 wYS4#7  
    `ZNz Dr  
    LVO`+:  
    Fields: XY Symmetric Angle in degrees pGUrYik4  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY }JvyjE  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 |8V+(Vzl  
    iv3NmkP1  
    Sensitivity Analysis: ~F DJKGK  
    Jf4D">h  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| U%U%a,rA5s  
    Type                      Value      Criterion        Change          Value      Criterion        Change R%54!f0 %  
    Fringe tolerance on surface 1 / 1E6U6  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 o^5xCK:Oi2  
    Change in Focus                :      -0.000000                            0.000000 s6!aGZ  
    Fringe tolerance on surface 2 kg9ZSkJr  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 )I`B+c:  
    Change in Focus                :       0.000000                            0.000000  ;-U :t4  
    Fringe tolerance on surface 3 F8/4PB8-  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 J`V7FlM  
    Change in Focus                :      -0.000000                            0.000000 ,zz+s[ZH7O  
    Thickness tolerance on surface 1 m!w(Q+*j  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 r!j_KiUy  
    Change in Focus                :       0.000000                            0.000000 m$0T"`AP`  
    Thickness tolerance on surface 2 sIg{a( 1/  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 E3sl"d;~  
    Change in Focus                :       0.000000                           -0.000000 \*a7DuVw  
    Decenter X tolerance on surfaces 1 through 3 [ 98)7  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 :/d#U:I  
    Change in Focus                :       0.000000                            0.000000 6YYZ S2  
    Decenter Y tolerance on surfaces 1 through 3 g$ 9Yfu  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 @ L?7` VoE  
    Change in Focus                :       0.000000                            0.000000 |a/"7B|?\  
    Tilt X tolerance on surfaces 1 through 3 (degrees) m[(2  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 I`zn#U'  
    Change in Focus                :       0.000000                            0.000000 !V#(g./W  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) c?j/ H$  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 +-K-CXt  
    Change in Focus                :       0.000000                            0.000000 lc#su$xR>  
    Decenter X tolerance on surface 1 M)( 5S1ndq  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 x4R[Q&:M  
    Change in Focus                :       0.000000                            0.000000 ^Jsx^?  
    Decenter Y tolerance on surface 1 3Sf <oYF  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 1Ep!U#Del  
    Change in Focus                :       0.000000                            0.000000 mp>,TOi~s7  
    Tilt X tolerance on surface (degrees) 1 >o%.`)Ar  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 >>F E?@  
    Change in Focus                :       0.000000                            0.000000 $x#Y\dpS  
    Tilt Y tolerance on surface (degrees) 1 fg^$F9@  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ebp18_a|  
    Change in Focus                :       0.000000                            0.000000 8v5cQ5Lc  
    Decenter X tolerance on surface 2 .G4(Ryh  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 cZPv6c_w  
    Change in Focus                :       0.000000                            0.000000 ?%{v1(  
    Decenter Y tolerance on surface 2 gb( a`  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 #-Ehg4W  
    Change in Focus                :       0.000000                            0.000000 nsuK{8}@  
    Tilt X tolerance on surface (degrees) 2 m ['UV2  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 '%l<33*  
    Change in Focus                :       0.000000                            0.000000 Y Dq5%N`  
    Tilt Y tolerance on surface (degrees) 2 MXq+aS{  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 >5'C<jc C  
    Change in Focus                :       0.000000                            0.000000 4&&((H  
    Decenter X tolerance on surface 3 `og 3P:y  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 oZQ% P  
    Change in Focus                :       0.000000                            0.000000 AKzhal!  
    Decenter Y tolerance on surface 3 DUFfk6#X}  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 IlN9IF\9L  
    Change in Focus                :       0.000000                            0.000000 vB hpD  
    Tilt X tolerance on surface (degrees) 3 Fr`"XH  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 wG ua"@IE  
    Change in Focus                :       0.000000                            0.000000 Sbc  
    Tilt Y tolerance on surface (degrees) 3 T;-&3  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 m+?$cyA>v  
    Change in Focus                :       0.000000                            0.000000 d *!)wt  
    Irregularity of surface 1 in fringes Lf4c[[@%gd  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 j(AN] g:  
    Change in Focus                :       0.000000                            0.000000 h;u8{t"  
    Irregularity of surface 2 in fringes 2g$PEwXe  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 o $7:*jU  
    Change in Focus                :       0.000000                            0.000000 kn:X^mDXC/  
    Irregularity of surface 3 in fringes N\1 EWi  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ( d#E16y  
    Change in Focus                :       0.000000                            0.000000 AvfSR p  
    Index tolerance on surface 1 ]+u`E  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 S%uwQ!=O8  
    Change in Focus                :       0.000000                            0.000000 h8iic  
    Index tolerance on surface 2 2? 9*V19yu  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 W|XW2`3p  
    Change in Focus                :       0.000000                           -0.000000 @eU;oRVc{  
    wJ,l"bnq  
    Worst offenders: VEj-%"\   
    Type                      Value      Criterion        Change 4^/MDM@  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 G~b/!clN  
    TSTY   2             0.20000000     0.35349910    -0.19053324 %{?EfULg  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 G6]W'Kk  
    TSTX   2             0.20000000     0.35349910    -0.19053324 (,*e\o  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 efW<  
    TSTY   1             0.20000000     0.42678383    -0.11724851 f*)8bZDD  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 2uujA* ^  
    TSTX   1             0.20000000     0.42678383    -0.11724851 #e|G!'wdj  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 5 Yj qN  
    TSTY   3             0.20000000     0.42861670    -0.11541563 'M8wjU  
    t@m!k+0  
    Estimated Performance Changes based upon Root-Sum-Square method: Osz:23(p  
    Nominal MTF                 :     0.54403234 0' j/ 9vm  
    Estimated change            :    -0.36299231 )(V|d$n  
    Estimated MTF               :     0.18104003 *m)+|v}  
    ,/*L|M/&5  
    Compensator Statistics: 4BF \- lq~  
    Change in back focus: wl2P^Pj  
    Minimum            :        -0.000000 `>'%!E9G  
    Maximum            :         0.000000 ;:nx6wi  
    Mean               :        -0.000000 lrrNyaFn  
    Standard Deviation :         0.000000 mu`:@7+Yp  
     }^3CG9%  
    Monte Carlo Analysis: Y=0D[o8  
    Number of trials: 20 [[ {L#  
    OynQlQD/Eu  
    Initial Statistics: Normal Distribution ul@G{N{L   
    mcO/V-\5'  
      Trial       Criterion        Change dA4DW  
          1     0.42804416    -0.11598818 R2K{vs  
    Change in Focus                :      -0.400171 QAN :  
          2     0.54384387    -0.00018847 +h*-9  
    Change in Focus                :       1.018470 F%|F-6  
          3     0.44510003    -0.09893230 AIN Fv;  
    Change in Focus                :      -0.601922 [9N>*dKB  
          4     0.18154684    -0.36248550 A<$~Q;r2a  
    Change in Focus                :       0.920681 [ {@0/5i  
          5     0.28665820    -0.25737414 jgpSFb<9F  
    Change in Focus                :       1.253875 "wqN,}bj\  
          6     0.21263372    -0.33139862 ^/c v8M=  
    Change in Focus                :      -0.903878 <yNu/B.M  
          7     0.40051424    -0.14351809 ' 5tk0A  
    Change in Focus                :      -1.354815 ZH<: g6  
          8     0.48754161    -0.05649072 zH)M,+P  
    Change in Focus                :       0.215922 =Pj+^+UM  
          9     0.40357468    -0.14045766 $F&m('aB8  
    Change in Focus                :       0.281783 V7~tIhuJH  
         10     0.26315315    -0.28087919 IZ2(F,{o  
    Change in Focus                :      -1.048393 kz30! L  
         11     0.26120585    -0.28282649 ^\"@r%|  
    Change in Focus                :       1.017611 41^=z[k  
         12     0.24033815    -0.30369419 z:gp\  
    Change in Focus                :      -0.109292 HgY [Q}7s  
         13     0.37164046    -0.17239188 VA D9mS^~  
    Change in Focus                :      -0.692430 yq7gBkS  
         14     0.48597489    -0.05805744 Q3h_4{w  
    Change in Focus                :      -0.662040 |J:|56kVZq  
         15     0.21462327    -0.32940907 }.DE521u  
    Change in Focus                :       1.611296  Q{K '#  
         16     0.43378226    -0.11025008 h;C/} s  
    Change in Focus                :      -0.640081 -w'_Q"o2  
         17     0.39321881    -0.15081353 pHNo1-k\  
    Change in Focus                :       0.914906 v~.nP} E^  
         18     0.20692530    -0.33710703 uE'O}Y95  
    Change in Focus                :       0.801607 Nv[MU@Tv  
         19     0.51374068    -0.03029165 sV']p#HK0  
    Change in Focus                :       0.947293 GBg~NkC7.  
         20     0.38013374    -0.16389860 Vf*Z}'  
    Change in Focus                :       0.667010 F9}jiCom  
    `AcUxnO  
    Number of traceable Monte Carlo files generated: 20 WgTD O3  
    MJ?fMR@  
    Nominal     0.54403234 Z~S%|{&Br  
    Best        0.54384387    Trial     2 j:>_1P/  
    Worst       0.18154684    Trial     4 7$ze RYD+  
    Mean        0.35770970 {wL30D^  
    Std Dev     0.11156454 Ea,L04K  
    mxPzB#t4  
    ]Y.GU7`  
    Compensator Statistics: z?3t^UPW  
    Change in back focus: L ^E#"f  
    Minimum            :        -1.354815 R\T1R"1  
    Maximum            :         1.611296 u5Tu~  
    Mean               :         0.161872 KkJrh@lk  
    Standard Deviation :         0.869664 hj4mbL  
    _TbQjE&6  
    90% >       0.20977951               UE\Z] t!  
    80% >       0.22748071               w\}@+w3b~  
    50% >       0.38667627               m%s&$  
    20% >       0.46553746               WeiDg,]e$b  
    10% >       0.50064115                &# < M o  
    '_~qAx@F#c  
    End of Run. A||,|He~  
    b/soU2?^  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 Y n7z#bu  
    YZdV0 -S  
    x>!bvZ2  
    是大于0.6左右的，难道我按照这个默认的公差来加工的话，只有10%的才可能大于0.5？那太低了啊，请问这该怎么进行进一步处理。或者之前哪有问题 uB1>.Pvxb  
    CK=TD`$w  
    不吝赐教
     
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    只看该作者 1楼 发表于: 2011-06-21
    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？
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 y!M# #K*  
    80% >       0.22748071                 N?s`a;Q[=  
    50% >       0.38667627                 <~teD[1k"  
    20% >       0.46553746                 Ib(G!oO:E-  
    10% >       0.50064115 /T<))@$  
    w| eVl{~p  
    最后这个数值是MTF值呢，还是MTF的公差？ N;` jz(r  
    >&YUV.mLY  
    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？？？   [x{Ai( /T^  
    @%"r69\  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : \]0#jI/:  
    90% >       0.20977951                 WmOu#5*;  
    80% >       0.22748071                 i9|}-5ED  
    50% >       0.38667627                 @KRia{  
    20% >       0.46553746                 _*cKu>,O  
    10% >       0.50064115 rZ&li/Z  
    ....... WfHa  
    LYr9a(  
    RivhEc1h%  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   .7M.bpmqE  
    Mode                : Sensitivities dA^{}zZu  
    Sampling            : 2 R8 LHwRQ  
    Nominal Criterion   : 0.54403234 ?Yx2q_KZk  
    Test Wavelength     : 0.6328 6E2#VT>@/  
    ^Rtxef  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
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    只看该作者 6楼 发表于: 2011-06-24
    回 5楼(天地大同) 的帖子
    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？ h/2@4XKj  
    "$P/ek  
    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？
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    只看该作者 7楼 发表于: 2011-06-24
    回 6楼(sansummer) 的帖子
    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
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    只看该作者 8楼 发表于: 2011-06-24
    回 7楼(天地大同) 的帖子
    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？
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    只看该作者 9楼 发表于: 2011-06-28
    回 8楼(sansummer) 的帖子
    恩，多多尝试
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