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    [讨论]公差分析结果的疑问 [复制链接]

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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 y"Pd>61h  
    cij8'( "+!  
    T, +=ka$  
    ,1g_{dMx  
    然后添加了默认公差分析，基本没变 >=d 5Scix  
    0x,**6  
    52 *ii  
    ^9`|QF  
    然后运行分析的结果如下： gAh#H ?MM  
    &"?99E>  
    Analysis of Tolerances }$'XV.  
    #K`0b$  
    File : E:\光学设计资料\zemax练习\f500.ZMX NiFe#SLA  
    Title: +J85Re `  
    Date : TUE JUN 21 2011 0~EGrEt  
    LzJ`@0RrX  
    Units are Millimeters. #1C]ZV] B  
    All changes are computed using linear differences. w=CzPNRHH!  
    U{KnjoS  
    Paraxial Focus compensation only. Y]=k"]:%  
    HYmUD74FR  
    WARNING: Solves should be removed prior to tolerancing. Yg?BcY\  
    c3Gy1#f:#2  
    Mnemonics: %Oo f/q  
    TFRN: Tolerance on curvature in fringes. @ze2'56F}  
    TTHI: Tolerance on thickness. _-sFJi8B  
    TSDX: Tolerance on surface decentering in x. )Fp$ *]|  
    TSDY: Tolerance on surface decentering in y. ^Zp  
    TSTX: Tolerance on surface tilt in x (degrees). -Bl^TT  
    TSTY: Tolerance on surface tilt in y (degrees). ,2 rfN"o  
    TIRR: Tolerance on irregularity (fringes). u;]xAr1  
    TIND: Tolerance on Nd index of refraction. :\I*_00!  
    TEDX: Tolerance on element decentering in x. yf;TIh%)=  
    TEDY: Tolerance on element decentering in y. $M j\ 3  
    TETX: Tolerance on element tilt in x (degrees). qo$ls\[X  
    TETY: Tolerance on element tilt in y (degrees). S*>T%#F6Uo  
    R8:5N3Fx  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately.  VM:|I~gJ  
    kMK0|+  
    WARNING: Boundary constraints on compensators will be ignored. *`|xa@1v`  
    $_,-ES I  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm P;@j  
    Mode                : Sensitivities Z:<an+v|5  
    Sampling            : 2 Xtfs)"  
    Nominal Criterion   : 0.54403234 DRR)mQBb  
    Test Wavelength     : 0.6328 Qclq^|O0  
    /M::x+/T  
    Cl9rJ oT  
    Fields: XY Symmetric Angle in degrees n1b:Bv4"]#  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY A)4XQF  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ?pfr^ !@$  
    <YtjE!2  
    Sensitivity Analysis: 5 2 Qr  
    "/RMIS K[;  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| AD^I1 ]2f  
    Type                      Value      Criterion        Change          Value      Criterion        Change 'e' p`*  
    Fringe tolerance on surface 1 *Ow2,{Nn  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 b- e  
    Change in Focus                :      -0.000000                            0.000000 Ncsh{.  
    Fringe tolerance on surface 2 0M roHFh9`  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 T)OR HJ&,  
    Change in Focus                :       0.000000                            0.000000 rX /'  
    Fringe tolerance on surface 3 m2"e ]I  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 V2`Ud[  
    Change in Focus                :      -0.000000                            0.000000 j)Ak:l%a  
    Thickness tolerance on surface 1 b=1E87i@W  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 0IdA!.|  
    Change in Focus                :       0.000000                            0.000000 q^sZP\i,*;  
    Thickness tolerance on surface 2 )qw;KG0F  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ,OubKcNg  
    Change in Focus                :       0.000000                           -0.000000 1AN$s  
    Decenter X tolerance on surfaces 1 through 3 Osm))Ua(  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ZAU#^bEQB  
    Change in Focus                :       0.000000                            0.000000 KK3iui  
    Decenter Y tolerance on surfaces 1 through 3 NU?<bIQ  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 c AO:fb7  
    Change in Focus                :       0.000000                            0.000000 aA52Li  
    Tilt X tolerance on surfaces 1 through 3 (degrees) (AtyM?*  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 2nC,1%kxhq  
    Change in Focus                :       0.000000                            0.000000 A9 g%>  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ;Su-Y!&%  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 YS){ N=g&'  
    Change in Focus                :       0.000000                            0.000000 .?Y"o3  
    Decenter X tolerance on surface 1 _fu <`|kc  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 &Q;sbI}  
    Change in Focus                :       0.000000                            0.000000 d?J&mLQ6  
    Decenter Y tolerance on surface 1 Dqii60  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 =t)qy5  
    Change in Focus                :       0.000000                            0.000000 TUC)S&bC  
    Tilt X tolerance on surface (degrees) 1 [8IO0lul+  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 1n!:L!,`  
    Change in Focus                :       0.000000                            0.000000 (@5`beEd  
    Tilt Y tolerance on surface (degrees) 1 SU4i'o  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 T9w=k)  
    Change in Focus                :       0.000000                            0.000000 K&`1{,  
    Decenter X tolerance on surface 2 ;J TY#)Bh  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 |r Aot2  
    Change in Focus                :       0.000000                            0.000000 o}114X4q;  
    Decenter Y tolerance on surface 2 p? o[+L<  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 `3i>e<m~  
    Change in Focus                :       0.000000                            0.000000 kl.;E{PL  
    Tilt X tolerance on surface (degrees) 2 0>7Ij7\[8  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 }URdoTOvb  
    Change in Focus                :       0.000000                            0.000000 gAdqZJR%]  
    Tilt Y tolerance on surface (degrees) 2 "W%YsN0  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 r4X}U|s!0  
    Change in Focus                :       0.000000                            0.000000 =FhP$r*  
    Decenter X tolerance on surface 3 aMhVO(+FW  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 s. A}ydtt  
    Change in Focus                :       0.000000                            0.000000 I ]ZZN6"  
    Decenter Y tolerance on surface 3 G/Sp/I<d  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 M=uT8JB  
    Change in Focus                :       0.000000                            0.000000 eN,9N]K  
    Tilt X tolerance on surface (degrees) 3 }8Y! -qX  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ,GYQ,9:  
    Change in Focus                :       0.000000                            0.000000 .waw=C  
    Tilt Y tolerance on surface (degrees) 3 s__xBY  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 mXp#6'a  
    Change in Focus                :       0.000000                            0.000000 zG6l8%q'UE  
    Irregularity of surface 1 in fringes * &:_Vgu  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634  'Y)aGH(  
    Change in Focus                :       0.000000                            0.000000 mW%8`$rVEO  
    Irregularity of surface 2 in fringes GT<oYrjU  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 XlU\D}zS  
    Change in Focus                :       0.000000                            0.000000 dz([GP'-*  
    Irregularity of surface 3 in fringes vnvpb! @Q  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 } jJKE  
    Change in Focus                :       0.000000                            0.000000 l EFd^@t  
    Index tolerance on surface 1 %}9tU>?F#  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 p  lnH  
    Change in Focus                :       0.000000                            0.000000 1$vGQ  
    Index tolerance on surface 2 6[A\cs  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 PO"lY'W.U  
    Change in Focus                :       0.000000                           -0.000000 nTr%S&<+"  
    W"vLCHTh  
    Worst offenders: zx}+Q B0  
    Type                      Value      Criterion        Change 5U47 5&  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 C LaQE{  
    TSTY   2             0.20000000     0.35349910    -0.19053324 <3B^5p\/  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 hYkk r&  
    TSTX   2             0.20000000     0.35349910    -0.19053324 JFm@jc  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 a(A~S u97  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Jh E C  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 [Xu8~c X  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ,w#lUg p  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 I </P_:4G  
    TSTY   3             0.20000000     0.42861670    -0.11541563 3E|||3rf  
    H<_Tn$<zH.  
    Estimated Performance Changes based upon Root-Sum-Square method: c]|vg=W  
    Nominal MTF                 :     0.54403234 j;-Wf6h{  
    Estimated change            :    -0.36299231 2 L4[~>  
    Estimated MTF               :     0.18104003 _:m70%i  
    rc8HZ  
    Compensator Statistics: Ea@0>_U|  
    Change in back focus: AfTm#-R  
    Minimum            :        -0.000000 et 1HbX  
    Maximum            :         0.000000 o7!A(Eu  
    Mean               :        -0.000000 IEy$2f>Ns  
    Standard Deviation :         0.000000 _h-agn4[i  
    jV sH  
    Monte Carlo Analysis: A`3KE9ED  
    Number of trials: 20 HqWWWCWal  
    );.$  `0  
    Initial Statistics: Normal Distribution ! *sXLlS  
    4P3RRS  
      Trial       Criterion        Change PuP"( M  
          1     0.42804416    -0.11598818 71nZi`AR  
    Change in Focus                :      -0.400171 0(y*EJA$  
          2     0.54384387    -0.00018847 r*`e%`HU  
    Change in Focus                :       1.018470 #H~55))F  
          3     0.44510003    -0.09893230 }U_^zQfaj  
    Change in Focus                :      -0.601922 aze#Cn,P}  
          4     0.18154684    -0.36248550 $vXY"-k  
    Change in Focus                :       0.920681 n>v1<^  
          5     0.28665820    -0.25737414  ImhkU%  
    Change in Focus                :       1.253875 ?C2(q6X+s  
          6     0.21263372    -0.33139862 }h;Z_XF&  
    Change in Focus                :      -0.903878 s=jmvvs_V}  
          7     0.40051424    -0.14351809 o!BCR:  
    Change in Focus                :      -1.354815 fxcE1=a  
          8     0.48754161    -0.05649072 X <xM '  
    Change in Focus                :       0.215922 8`*5[ L~~/  
          9     0.40357468    -0.14045766 1-p#}VX  
    Change in Focus                :       0.281783 #a}w&O";  
         10     0.26315315    -0.28087919 lu{ *]!  
    Change in Focus                :      -1.048393 :5~Dca_iU4  
         11     0.26120585    -0.28282649 ,9ueHE  
    Change in Focus                :       1.017611 0OHXg=  
         12     0.24033815    -0.30369419 D=a*Xu2zq  
    Change in Focus                :      -0.109292 \;0pjxq=  
         13     0.37164046    -0.17239188 g&g:H H :  
    Change in Focus                :      -0.692430 QwhO /  
         14     0.48597489    -0.05805744 0e8  
    Change in Focus                :      -0.662040 _K9PA[m5 ~  
         15     0.21462327    -0.32940907 Hi[lN7ma8  
    Change in Focus                :       1.611296 6Mc&=}bV  
         16     0.43378226    -0.11025008 IMD^(k 2  
    Change in Focus                :      -0.640081 6h/!,j0:t_  
         17     0.39321881    -0.15081353 D/=05E%[81  
    Change in Focus                :       0.914906 P[ o"%NZ'  
         18     0.20692530    -0.33710703 C,W@C  
    Change in Focus                :       0.801607 e2=}qE7  
         19     0.51374068    -0.03029165 {O _X/y~  
    Change in Focus                :       0.947293 k H65k (  
         20     0.38013374    -0.16389860 -"xAeI1+  
    Change in Focus                :       0.667010 *x8~}/[T(F  
    q,fp DNo  
    Number of traceable Monte Carlo files generated: 20 2tK~]0x  
    <. Tllk@r)  
    Nominal     0.54403234 my sXgS&S  
    Best        0.54384387    Trial     2 bsu?Q'q  
    Worst       0.18154684    Trial     4 @] .s^ss9_  
    Mean        0.35770970 E4Q`)6]0  
    Std Dev     0.11156454 mdL T7  
    ,$Fh^KNo]  
    yam'LF  
    Compensator Statistics: TSFrv8L  
    Change in back focus: aN"YEL>w  
    Minimum            :        -1.354815 Z6gwAvf<  
    Maximum            :         1.611296 LF.i0^#J  
    Mean               :         0.161872 A(&\wd  
    Standard Deviation :         0.869664 yzfiH4  
    ;VCV%=W<  
    90% >       0.20977951               ?:vg`m!*  
    80% >       0.22748071               9Y2u/|!.3  
    50% >       0.38667627               *}:P  
    20% >       0.46553746               z]g#2xD2  
    10% >       0.50064115                .n IGs'P  
    *><j(uz!  
    End of Run. ,eebO~7vB  
    Nkb%4ofKqu  
    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 N''xdz3Z  
    * g+v*q X  
    ;woK96"{t  
    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 ui8$F "I*  
    EM<W+YU  
    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                 ?fU{?nI}>p  
    80% >       0.22748071                 $ ga,$G  
    50% >       0.38667627                 w0>5#j q#r  
    20% >       0.46553746                 I`{=[.c  
    10% >       0.50064115 ciH TnC  
    i+-=I+L3  
    最后这个数值是MTF值呢，还是MTF的公差？ MmfshnTN  
    qqYQ/4Ajw  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   u8~5e  
    s0Y7`uD^  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : Ds%~J  
    90% >       0.20977951                 H Ff9^  
    80% >       0.22748071                 cX-) ]D  
    50% >       0.38667627                 `lq[6[n  
    20% >       0.46553746                 K"ytE2:3  
    10% >       0.50064115 c:z<8#A}  
    .......  *}`D2_uP  
    [ U?a %$G>  
    Ja6PX P]'  
    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   q\6ZmKGnT  
    Mode                : Sensitivities q'awV5y  
    Sampling            : 2 #AUz.WHD  
    Nominal Criterion   : 0.54403234 (|<.7K N  
    Test Wavelength     : 0.6328 #>\+6W17U  
    ,t_Fo-i7vI  
    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？ *aF<#m v  
    6- @n$5W0  
    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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