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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 J2uZmEt  
    %Uz(Vd#K  
    2^?:&1:  
    >X*Mio8P#  
    然后添加了默认公差分析，基本没变 4CGPO c  
    t&?i m<  
    JN7k2]{  
    6uKTGc4  
    然后运行分析的结果如下： K~ ;45Z2  
    +V&{*f)  
    Analysis of Tolerances `xrmT t X  
    T|tOTk  
    File : E:\光学设计资料\zemax练习\f500.ZMX \QmCeB  
    Title: \U@rg4  
    Date : TUE JUN 21 2011 fS^!ZPe1  
    Nj(" |`9"  
    Units are Millimeters. IIq1\khh  
    All changes are computed using linear differences. Ivb 4P`{  
    eb*#'\~'  
    Paraxial Focus compensation only. =y=cW1TG  
    P./VmY'  
    WARNING: Solves should be removed prior to tolerancing. p !s}=wI `  
    z0/} !  
    Mnemonics: 9cJH"  
    TFRN: Tolerance on curvature in fringes. 7Pa@1']  
    TTHI: Tolerance on thickness.   zxp`  
    TSDX: Tolerance on surface decentering in x. *OQG 4aWy  
    TSDY: Tolerance on surface decentering in y. LzYO$Ir:g  
    TSTX: Tolerance on surface tilt in x (degrees). ak:c rrkx  
    TSTY: Tolerance on surface tilt in y (degrees). ,^S@EDq  
    TIRR: Tolerance on irregularity (fringes). '= l[;Q^Q  
    TIND: Tolerance on Nd index of refraction. vf8\i-U=  
    TEDX: Tolerance on element decentering in x. *cyeO*  
    TEDY: Tolerance on element decentering in y. [e1S^pI  
    TETX: Tolerance on element tilt in x (degrees). cV`E>w=D0  
    TETY: Tolerance on element tilt in y (degrees). 6 PxW8pn  
    j;+?HbL  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. SXt{k<|  
    Z{H5oUk  
    WARNING: Boundary constraints on compensators will be ignored. A'nq}t 3  
    v!%5&: c3  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm F]9nB3:W  
    Mode                : Sensitivities _D|^.)=U|  
    Sampling            : 2 RxQh2<?  
    Nominal Criterion   : 0.54403234 c2K:FdB  
    Test Wavelength     : 0.6328 itzyCw2|#  
    !~h}8'a?  
    z)uuxNv[R  
    Fields: XY Symmetric Angle in degrees !Kv@\4  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY BATG FS&  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 \%p34K\  
    +}-@@,  
    Sensitivity Analysis: hS9;k9w  
    _sbp6ZO_  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ~@kU3ZGJZ  
    Type                      Value      Criterion        Change          Value      Criterion        Change ~xoF6 CF  
    Fringe tolerance on surface 1 wfjnA~1h  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 G}9=)  
    Change in Focus                :      -0.000000                            0.000000 c5mZG7-  
    Fringe tolerance on surface 2 xzx$TUL  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 w;l<[q?_  
    Change in Focus                :       0.000000                            0.000000 c*R/]Dn   
    Fringe tolerance on surface 3 ^gFqRbuS  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 $U/YR&vcw  
    Change in Focus                :      -0.000000                            0.000000 :\=CRaA  
    Thickness tolerance on surface 1 n6k9~"?  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 r 6Q Q  
    Change in Focus                :       0.000000                            0.000000 *& m#qEv  
    Thickness tolerance on surface 2 ]G2uk`  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 bb d.  
    Change in Focus                :       0.000000                           -0.000000 )*:`':_a  
    Decenter X tolerance on surfaces 1 through 3 GHmv} Z  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 K).n.:vYZ  
    Change in Focus                :       0.000000                            0.000000 ~ Uo)0  
    Decenter Y tolerance on surfaces 1 through 3 rSYi<ku  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 OaL\w D^  
    Change in Focus                :       0.000000                            0.000000 \.g\Zib )  
    Tilt X tolerance on surfaces 1 through 3 (degrees)  ;vb8G$  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 )TmHhNo  
    Change in Focus                :       0.000000                            0.000000 i.:. Y  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) Zo{$  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ce6__f 5?  
    Change in Focus                :       0.000000                            0.000000 \8uIER5)  
    Decenter X tolerance on surface 1 vip~'  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 D?Ux[Ozb  
    Change in Focus                :       0.000000                            0.000000 pNRk.m]  
    Decenter Y tolerance on surface 1 |{@FMxn|q  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 n k2om$nN  
    Change in Focus                :       0.000000                            0.000000 p7H3J?`w1+  
    Tilt X tolerance on surface (degrees) 1 ?^j^K-rx  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 TYA~#3G)  
    Change in Focus                :       0.000000                            0.000000 @ps1Dr4s  
    Tilt Y tolerance on surface (degrees) 1 <ioO,oS'  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ko^\ HSXl  
    Change in Focus                :       0.000000                            0.000000 R CkaJ3  
    Decenter X tolerance on surface 2 w4LScvBg  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 %2V-~.Ro6  
    Change in Focus                :       0.000000                            0.000000 hTbI -u7BF  
    Decenter Y tolerance on surface 2 Oq3A#6~  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 nQ GQWg`  
    Change in Focus                :       0.000000                            0.000000 sm$ (Y.N  
    Tilt X tolerance on surface (degrees) 2 )3h^Y=43  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 !!o8N<NU  
    Change in Focus                :       0.000000                            0.000000 v<fnB  
    Tilt Y tolerance on surface (degrees) 2 07Ed fe  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 a[2vjFf#C  
    Change in Focus                :       0.000000                            0.000000 W14 Vm(`N  
    Decenter X tolerance on surface 3 #Eb5:;  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 D13Rx 6b  
    Change in Focus                :       0.000000                            0.000000 ^V %rag  
    Decenter Y tolerance on surface 3 xTGxvGv8  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 @JW@-9/  
    Change in Focus                :       0.000000                            0.000000 *Y@nVi  
    Tilt X tolerance on surface (degrees) 3 o!~Jzd.=h  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ltFq/M  
    Change in Focus                :       0.000000                            0.000000 }y%oT P&  
    Tilt Y tolerance on surface (degrees) 3 !p1qJ [  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 U?!>Nd  
    Change in Focus                :       0.000000                            0.000000 0 u?{ \  
    Irregularity of surface 1 in fringes ,hVvve,j}  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 .I@CS>j  
    Change in Focus                :       0.000000                            0.000000 dik9 >*"|o  
    Irregularity of surface 2 in fringes * 9p |HX=  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 7n90f2"m  
    Change in Focus                :       0.000000                            0.000000 {-A^g!jT&  
    Irregularity of surface 3 in fringes X";@T.ZGut  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 _GKB6e%  
    Change in Focus                :       0.000000                            0.000000 %0Y=WYUH>  
    Index tolerance on surface 1 D3c2^r $Z  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 "6a8s;  
    Change in Focus                :       0.000000                            0.000000 .%zy`n  
    Index tolerance on surface 2 !`mZ0c+  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 [TCP-bU  
    Change in Focus                :       0.000000                           -0.000000 vS;1/->WD  
    r &Ca" dI  
    Worst offenders: .Gcy> Av  
    Type                      Value      Criterion        Change S!{t6'8K  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 _sy'.Fo  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ?GTU=gp Q  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 qT/Do?Y  
    TSTX   2             0.20000000     0.35349910    -0.19053324 _ %%Z6x(  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 $v8l0JA *  
    TSTY   1             0.20000000     0.42678383    -0.11724851 JH7Ad (:  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 8UkKU_Uso  
    TSTX   1             0.20000000     0.42678383    -0.11724851 StI1){Wf  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 C%~a`e|/Y  
    TSTY   3             0.20000000     0.42861670    -0.11541563 >E,U>@+  
    kcDyuM`  
    Estimated Performance Changes based upon Root-Sum-Square method: GTv#nnC  
    Nominal MTF                 :     0.54403234 I-agZag%  
    Estimated change            :    -0.36299231 3zT_^;:L  
    Estimated MTF               :     0.18104003 [j4v]PE  
    tDDy]==E  
    Compensator Statistics: hAj1{pA,  
    Change in back focus: c)&>$S8*  
    Minimum            :        -0.000000 4'p=p#o  
    Maximum            :         0.000000 R4Rb73o  
    Mean               :        -0.000000 _W3Y\cs,-  
    Standard Deviation :         0.000000 g=T/_  
    2 3KyCV5  
    Monte Carlo Analysis: V3mAvmx  
    Number of trials: 20 iBudmT8  
     Yav2q3  
    Initial Statistics: Normal Distribution d1joVUYE  
    8q)=  
      Trial       Criterion        Change 71C42=AU  
          1     0.42804416    -0.11598818 vB! |\eJ  
    Change in Focus                :      -0.400171 hO[3Z ^X  
          2     0.54384387    -0.00018847 N -w(e  
    Change in Focus                :       1.018470 3/JyUh?  
          3     0.44510003    -0.09893230 Iak0 [6Ey  
    Change in Focus                :      -0.601922 %PJhy2  
          4     0.18154684    -0.36248550 $<p8TtI=YQ  
    Change in Focus                :       0.920681 0J~Qq]g  
          5     0.28665820    -0.25737414 :c8n[+5  
    Change in Focus                :       1.253875 fa.0I~  
          6     0.21263372    -0.33139862 6b~28  
    Change in Focus                :      -0.903878 }1-I[q6  
          7     0.40051424    -0.14351809 3 ?&h^UX  
    Change in Focus                :      -1.354815 F~U!1)  
          8     0.48754161    -0.05649072 F^!mI7Z|(2  
    Change in Focus                :       0.215922 #=}$OFg  
          9     0.40357468    -0.14045766 woq)\;CK  
    Change in Focus                :       0.281783 YwH./)r=  
         10     0.26315315    -0.28087919 c<+;4z  
    Change in Focus                :      -1.048393 8&V_$+U  
         11     0.26120585    -0.28282649 H(Ms^8Vs~:  
    Change in Focus                :       1.017611 t5 a7DD  
         12     0.24033815    -0.30369419 djT5 X  
    Change in Focus                :      -0.109292 VhEMk\  
         13     0.37164046    -0.17239188 Mp\<cE  
    Change in Focus                :      -0.692430 T@^]i&  
         14     0.48597489    -0.05805744 P%X-@0)  
    Change in Focus                :      -0.662040 p$;I'  
         15     0.21462327    -0.32940907 8Z85D  
    Change in Focus                :       1.611296 A\te*G0:S  
         16     0.43378226    -0.11025008 7 gB{In0  
    Change in Focus                :      -0.640081 VSOz.g>  
         17     0.39321881    -0.15081353 ZkB3[$4C=5  
    Change in Focus                :       0.914906 ^+?|Qfi  
         18     0.20692530    -0.33710703 c#xP91.m  
    Change in Focus                :       0.801607 O_K_f+7  
         19     0.51374068    -0.03029165 #G3N(wV3  
    Change in Focus                :       0.947293 > 7`&0?  
         20     0.38013374    -0.16389860 p SN~DvR  
    Change in Focus                :       0.667010 jJwkuh8R  
    }1+%_|Y-E  
    Number of traceable Monte Carlo files generated: 20 ?TEK=mD#u  
    @kD8^,(oH  
    Nominal     0.54403234 9>,Qgp,w  
    Best        0.54384387    Trial     2 '~-IV0v9  
    Worst       0.18154684    Trial     4 %c^ m\ E  
    Mean        0.35770970 xk~Nmb}  
    Std Dev     0.11156454 n<V1|X  
    FquFRx  
    6&2LWaWMo$  
    Compensator Statistics: "PpjoM ~  
    Change in back focus: N b3$4(F  
    Minimum            :        -1.354815 7y*ZXT]f  
    Maximum            :         1.611296  [~Hg}-c  
    Mean               :         0.161872 gp|1?L 54  
    Standard Deviation :         0.869664 L*]E`Xxd9  
    SlT*C6f  
    90% >       0.20977951               1(`M~vFDK  
    80% >       0.22748071               [EHrIn  
    50% >       0.38667627               'zgvQMu  
    20% >       0.46553746               S-E++f9D~  
    10% >       0.50064115                OKwOugi0  
    XKLF8~y8A  
    End of Run. QV,E #(\5  
    &+nRIv S_`  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 'UDBV  
    )@:l^$x  
    $T dC/#7  
    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 4u:0n>nJ1  
    "zV']A>4H  
    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                 @P70W<<  
    80% >       0.22748071                 Dsb(CoWw  
    50% >       0.38667627                 ^]rxhpS  
    20% >       0.46553746                 !`C?nY  
    10% >       0.50064115 h;n\*[fDc  
    +L6" vkz  
    最后这个数值是MTF值呢，还是MTF的公差？ a @SUi~+3  
    ?Leyz  
    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？？？   rsSue_Q  
    RSH/l;ii  
    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  : v#Sj|47  
    90% >       0.20977951                 B MY>a  
    80% >       0.22748071                 uX98iJ  
    50% >       0.38667627                 |""=)-5N  
    20% >       0.46553746                 >kZ6f4  
    10% >       0.50064115  ?;+^  
    ....... H)`@2~Y  
    [Ek42%  
    hRRkFz/0&  
    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   pFEZDf}:  
    Mode                : Sensitivities yAAG2c4(  
    Sampling            : 2 i,([YsRuou  
    Nominal Criterion   : 0.54403234 &;E d*OJ  
    Test Wavelength     : 0.6328 @W#fui<<}Y  
    luibB&p1  
    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？ 8~.iuFp  
    ;]{{)dst  
    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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