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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 imCl{vt(kj  
    cU5"c)$'  
    mx(%tz^t  
    = EChH@3  
    然后添加了默认公差分析，基本没变 d7tD|[(J  
    Q @OC=  
    !0csNg!  
    } .H Fm'p  
    然后运行分析的结果如下： $X=D9h  
    t6g)3F7T  
    Analysis of Tolerances CBnouKc:  
    :n>ccZeMv  
    File : E:\光学设计资料\zemax练习\f500.ZMX ,dj* p ,J  
    Title: xAd>",=~  
    Date : TUE JUN 21 2011 ~UJu @M  
    1s}NQ3  
    Units are Millimeters. azDC'.3{p  
    All changes are computed using linear differences. *v nxP9<  
    @FdCbPl$  
    Paraxial Focus compensation only. HMS9y%zl/  
    _`X#c-J  
    WARNING: Solves should be removed prior to tolerancing. q'Pz3/mk  
    3 +8"  
    Mnemonics: Xlqz8cI  
    TFRN: Tolerance on curvature in fringes. HLoQ}oK|K  
    TTHI: Tolerance on thickness. m!#)JFe67  
    TSDX: Tolerance on surface decentering in x. Ij6Wz. *  
    TSDY: Tolerance on surface decentering in y. 'K@{vB  
    TSTX: Tolerance on surface tilt in x (degrees). ,7fc41O3V  
    TSTY: Tolerance on surface tilt in y (degrees). e9Ul A  
    TIRR: Tolerance on irregularity (fringes). q ~Q)'*m  
    TIND: Tolerance on Nd index of refraction. qv0 DrL,3  
    TEDX: Tolerance on element decentering in x. ~ S?-{X+  
    TEDY: Tolerance on element decentering in y. *e-ptgO  
    TETX: Tolerance on element tilt in x (degrees). 3gI[]4lRH  
    TETY: Tolerance on element tilt in y (degrees). ]zvVY:v  
    9"HmHy&:E  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. #[U 9(44,  
    |:e|~sism  
    WARNING: Boundary constraints on compensators will be ignored. ^0s\/qyqm  
    4$?w D <  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm :B*vkwT  
    Mode                : Sensitivities a:-)+sgHw  
    Sampling            : 2 r}y[r}vk  
    Nominal Criterion   : 0.54403234 b,rH&+2H  
    Test Wavelength     : 0.6328 $['7vcB^  
    &G pA1  
    FV^4   
    Fields: XY Symmetric Angle in degrees 1(%>`=R8  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY vhYMWfbY  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 |YE,) kiF  
    kh<pLI>$h  
    Sensitivity Analysis: 4#@W;'  
    )H;pGM:  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| XJ:>UNf5;  
    Type                      Value      Criterion        Change          Value      Criterion        Change Y3P.|  
    Fringe tolerance on surface 1 t":W.q<  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 Gq0]m  
    Change in Focus                :      -0.000000                            0.000000 zmB31' _  
    Fringe tolerance on surface 2 r)6uX  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 %qS]NC  
    Change in Focus                :       0.000000                            0.000000 ^zaKO'KcV  
    Fringe tolerance on surface 3 y^mWG1"O  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 N>A{)_k3  
    Change in Focus                :      -0.000000                            0.000000 aJ5H3X}Y  
    Thickness tolerance on surface 1 2/yXY_L  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 q:Y6fbt<7  
    Change in Focus                :       0.000000                            0.000000 VDByj "%  
    Thickness tolerance on surface 2 d)04;[=  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ? o~:'Z  
    Change in Focus                :       0.000000                           -0.000000 VX^o"9Ntl  
    Decenter X tolerance on surfaces 1 through 3 Gh]_L+  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 $=PWT-GIR  
    Change in Focus                :       0.000000                            0.000000 G}!7tU  
    Decenter Y tolerance on surfaces 1 through 3 4AY _#f5u  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Y{k>*: Ax_  
    Change in Focus                :       0.000000                            0.000000 Z0 [)u_<  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ^w:OS5%R  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 uFwU-LCe  
    Change in Focus                :       0.000000                            0.000000 yaH Trh%  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) .7 (DxN  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "t[M'[ `C  
    Change in Focus                :       0.000000                            0.000000 Fw_ (q!  
    Decenter X tolerance on surface 1  ?YqJ.F;  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 QU^/[75Ea0  
    Change in Focus                :       0.000000                            0.000000 ] vC=.&]  
    Decenter Y tolerance on surface 1 NXzU0  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ?xtt7*'D  
    Change in Focus                :       0.000000                            0.000000 a'@-"qk  
    Tilt X tolerance on surface (degrees) 1 lpl8h4d  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851  }Vvsh3  
    Change in Focus                :       0.000000                            0.000000 ^ckj3Y#;  
    Tilt Y tolerance on surface (degrees) 1 u.Mqj"o\  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ,M\j%3  
    Change in Focus                :       0.000000                            0.000000 SU?wFCGT%  
    Decenter X tolerance on surface 2 UI!6aVL.  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 \*f;!{P{  
    Change in Focus                :       0.000000                            0.000000 aB6Ye/Io  
    Decenter Y tolerance on surface 2 #/ OUGeJ  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 z 0~j  
    Change in Focus                :       0.000000                            0.000000 ,f} h}  
    Tilt X tolerance on surface (degrees) 2 =2^Vgc  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 I"Q#IvNw  
    Change in Focus                :       0.000000                            0.000000 <=q*N;=T,  
    Tilt Y tolerance on surface (degrees) 2 SHMl%mw  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 \Ut6;  
    Change in Focus                :       0.000000                            0.000000 )-=2w-ZX  
    Decenter X tolerance on surface 3  X ?tj$  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ]EB6+x!G  
    Change in Focus                :       0.000000                            0.000000 {IJ-4>  
    Decenter Y tolerance on surface 3 H76E+AY  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 n vm^k  
    Change in Focus                :       0.000000                            0.000000 xTW3UY  
    Tilt X tolerance on surface (degrees) 3 >&bv\R/  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 l`SK*Bm~<  
    Change in Focus                :       0.000000                            0.000000 9160L qY  
    Tilt Y tolerance on surface (degrees) 3 @u,+F0Yd  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 [}z?1Gj;W(  
    Change in Focus                :       0.000000                            0.000000 ,{?wKXJ}L!  
    Irregularity of surface 1 in fringes )))2f skZ  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 XJe/tR  
    Change in Focus                :       0.000000                            0.000000 :Df)"~/mO+  
    Irregularity of surface 2 in fringes YU&4yk lE  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 :]'q#$!  
    Change in Focus                :       0.000000                            0.000000 o6*/o ]]  
    Irregularity of surface 3 in fringes z1F9$ ^  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 g;8M<`qvf  
    Change in Focus                :       0.000000                            0.000000 D/Rv&>Jh  
    Index tolerance on surface 1 MFv Si  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 C1 W>/?XC  
    Change in Focus                :       0.000000                            0.000000 g[M]i6h2  
    Index tolerance on surface 2 qYx!jA]O  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 h%' N hV  
    Change in Focus                :       0.000000                           -0.000000 */nuv k  
    cST\~SUm  
    Worst offenders: ,s0 9B  
    Type                      Value      Criterion        Change qmEoqU  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 W+8^P( K  
    TSTY   2             0.20000000     0.35349910    -0.19053324 %*6RzJO6  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 ' PELf P8  
    TSTX   2             0.20000000     0.35349910    -0.19053324 *|oPxQCtK  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 `qE4U4  
    TSTY   1             0.20000000     0.42678383    -0.11724851 zhX;6= X2  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 =c&62;O  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ?1CJf>B>  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 V~85oUc\-  
    TSTY   3             0.20000000     0.42861670    -0.11541563 )!A 2>  
    D i+4Eb  
    Estimated Performance Changes based upon Root-Sum-Square method: @l{I[pp  
    Nominal MTF                 :     0.54403234 }wfI4?}j}  
    Estimated change            :    -0.36299231 5C B%=iL{  
    Estimated MTF               :     0.18104003 I]jX7.fx  
    y1iX!m~)  
    Compensator Statistics: *<r%aeG$em  
    Change in back focus: usy,V"{  
    Minimum            :        -0.000000 bo1I&I  
    Maximum            :         0.000000 6GzzG P^  
    Mean               :        -0.000000 -,^WaB7u\  
    Standard Deviation :         0.000000 45) D+  
    \#++s&06  
    Monte Carlo Analysis: "qS!B.rt:  
    Number of trials: 20 VG)="g[%)  
    +#~O'r]%GG  
    Initial Statistics: Normal Distribution q[P~L`h S  
    80}4/8  
      Trial       Criterion        Change eQ<xp A  
          1     0.42804416    -0.11598818 +`| mJa  
    Change in Focus                :      -0.400171 !R74J=#(  
          2     0.54384387    -0.00018847 T%kKVr  
    Change in Focus                :       1.018470 Ihg~Q4t  
          3     0.44510003    -0.09893230 V\AK6U@r^  
    Change in Focus                :      -0.601922 :G}DAUFN  
          4     0.18154684    -0.36248550 &hI>L  
    Change in Focus                :       0.920681 f*<ps o  
          5     0.28665820    -0.25737414 B'p5M.6d#:  
    Change in Focus                :       1.253875 9#Y2`p T  
          6     0.21263372    -0.33139862 b+Vi3V  
    Change in Focus                :      -0.903878 5mavcle{4r  
          7     0.40051424    -0.14351809 :_Fxy5}  
    Change in Focus                :      -1.354815 Sph*1c(R  
          8     0.48754161    -0.05649072 VhvTBo<cw  
    Change in Focus                :       0.215922 H* /&A9("  
          9     0.40357468    -0.14045766 4gOgWBv  
    Change in Focus                :       0.281783 :G 5C ]'t  
         10     0.26315315    -0.28087919 JpK[&/Ct  
    Change in Focus                :      -1.048393 Fg=v6j4W  
         11     0.26120585    -0.28282649 O&V[g>x"U  
    Change in Focus                :       1.017611 =Z`0>R`  
         12     0.24033815    -0.30369419 )b92yP{  
    Change in Focus                :      -0.109292 6e# wR/  
         13     0.37164046    -0.17239188 r?^"6 5 =  
    Change in Focus                :      -0.692430 y9!:^kDI  
         14     0.48597489    -0.05805744 f=m/ -mAA  
    Change in Focus                :      -0.662040 6V2j*J  
         15     0.21462327    -0.32940907 _2OuskL  
    Change in Focus                :       1.611296 ~^7r?<aKc  
         16     0.43378226    -0.11025008 Pq?*C;D  
    Change in Focus                :      -0.640081 tpo>1|  
         17     0.39321881    -0.15081353 @.ZL7$|d  
    Change in Focus                :       0.914906 QKccrAo  
         18     0.20692530    -0.33710703 l.oBcg[  
    Change in Focus                :       0.801607 Dtt-|_EMS  
         19     0.51374068    -0.03029165 (6R4 \8z2  
    Change in Focus                :       0.947293 ([KN*OF  
         20     0.38013374    -0.16389860 -:S IS`0s  
    Change in Focus                :       0.667010 TQJF+;%  
    hnzNP\$U]  
    Number of traceable Monte Carlo files generated: 20 $XGtS$  
    3dG4pl~  
    Nominal     0.54403234 jdM=SBy7q  
    Best        0.54384387    Trial     2 Dm%%e o  
    Worst       0.18154684    Trial     4 GNU;jSh5  
    Mean        0.35770970 m7m \`;  
    Std Dev     0.11156454 E[?kGR[  
    CH;;V3  
    XLb0 9;  
    Compensator Statistics: <%KUdkzEP  
    Change in back focus: _z8;lt   
    Minimum            :        -1.354815 ~`R1sSr"  
    Maximum            :         1.611296 7'OPjt M  
    Mean               :         0.161872 Rd%0\ B  
    Standard Deviation :         0.869664 (Es{la G  
    Ttv'k*$cP  
    90% >       0.20977951               WZ?!!   
    80% >       0.22748071               *jF#^=  
    50% >       0.38667627               +< KNY  
    20% >       0.46553746               ?9e]   
    10% >       0.50064115                T//S,   
    LgHJo-+>  
    End of Run. TyOH`5 D  
    ^>m^\MuZ  
    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 ({M?Q>s  
    K@r*;T  
    wiE]z  
    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 Of`c`-<j  
    D1Yh,P<CF\  
    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                 1r 571B*O  
    80% >       0.22748071                 @GG ccF  
    50% >       0.38667627                 l`gTU?<xd  
    20% >       0.46553746                 D;js.ZF  
    10% >       0.50064115 /cY^]VLe  
    _e'Y3:  
    最后这个数值是MTF值呢，还是MTF的公差？ ^l!L)iw  
    \0AiCMX[  
    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？？？   aqr!oxn?t  
    ;V.vfar  
    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  : Lt>7hBe"  
    90% >       0.20977951                 fIyPFqf7w)  
    80% >       0.22748071                 #x~_`>mDN  
    50% >       0.38667627                 knSuzq%*  
    20% >       0.46553746                 ~B_ D@gV|  
    10% >       0.50064115 Q!$IQJ]|Y  
    ....... ~`Sle xK|}  
    &O tAAE  
    AMT slo  
    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   ,!>fmU`E4  
    Mode                : Sensitivities btQet.  
    Sampling            : 2 kF-TG3  
    Nominal Criterion   : 0.54403234 O71BM@2<  
    Test Wavelength     : 0.6328 %fpsc _  
    F= i!d,S  
    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？ GP]TnQ<*;  
    N84qcc  
    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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