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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 U\_-GS;1  
    QasUgZ  
    _N.N?>  
    i2PPVT  
    然后添加了默认公差分析,基本没变 S\qYw(G  
    H*l2,0&W  
    oZ)\Ya=  
    U~,~GU=X  
    然后运行分析的结果如下: B&tU~  
    0a#2 Lo  
    Analysis of Tolerances t-xw=&!w  
    hkS K;  
    File : E:\光学设计资料\zemax练习\f500.ZMX WVP^C71  
    Title: ^,Paih 2  
    Date : TUE JUN 21 2011 ?A[q/n:K  
    t+R8{9L-  
    Units are Millimeters. Ol}^'7H  
    All changes are computed using linear differences. uP'x{Pr)  
    zi^T?<t  
    Paraxial Focus compensation only. t)y WQV  
    L_>j SP  
    WARNING: Solves should be removed prior to tolerancing. sknta 0^=2  
    ^|z  
    Mnemonics: XJ3 5Z+M  
    TFRN: Tolerance on curvature in fringes. rtl|zCst  
    TTHI: Tolerance on thickness. YS}uJ&WoF  
    TSDX: Tolerance on surface decentering in x. 4t(V)1+  
    TSDY: Tolerance on surface decentering in y. ls(lL\  
    TSTX: Tolerance on surface tilt in x (degrees). NH?q/4=I0W  
    TSTY: Tolerance on surface tilt in y (degrees). DPrFBy  
    TIRR: Tolerance on irregularity (fringes). cU,]^/0Y  
    TIND: Tolerance on Nd index of refraction. 3NEbCILF  
    TEDX: Tolerance on element decentering in x. vgfLI}|5  
    TEDY: Tolerance on element decentering in y. tgu}^TfKkg  
    TETX: Tolerance on element tilt in x (degrees). kIHfLwh9N  
    TETY: Tolerance on element tilt in y (degrees). qO yg&]7  
    {x3"/sF  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. DEGEr-  
    67Z.aaXD1  
    WARNING: Boundary constraints on compensators will be ignored. QLq^[ >n  
    Et\z^y  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Ig&=(Kmr  
    Mode                : Sensitivities Q4gsOx P  
    Sampling            : 2 hOI| #(-  
    Nominal Criterion   : 0.54403234 &ukYTDM  
    Test Wavelength     : 0.6328 H /E.R[\+x  
    L-7?:  
    =.@{ uu;  
    Fields: XY Symmetric Angle in degrees ogt<vng  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY eOZ0L1JM!  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 /cPe zX  
    xWY%-CWY.  
    Sensitivity Analysis: ;\N{z6  
    \t LfB[S.5  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| YT)jBS~&  
    Type                      Value      Criterion        Change          Value      Criterion        Change 5*.JXx E;U  
    Fringe tolerance on surface 1 DKd:tL24&  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 (Rqn)<<2  
    Change in Focus                :      -0.000000                            0.000000 ar-N4+!@  
    Fringe tolerance on surface 2 ?Y:>Ouv*z'  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 d ] J5c  
    Change in Focus                :       0.000000                            0.000000 ZK =`Y@  
    Fringe tolerance on surface 3 k"*A@  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ac8+?FpK #  
    Change in Focus                :      -0.000000                            0.000000 d!+8  
    Thickness tolerance on surface 1 OH2Xxr[bQ  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 3$fzqFo  
    Change in Focus                :       0.000000                            0.000000 ?0%yDq1_  
    Thickness tolerance on surface 2 FLT4:B7  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 o!q3+Pp;}  
    Change in Focus                :       0.000000                           -0.000000 Pr |u_^  
    Decenter X tolerance on surfaces 1 through 3 -;/;dz;  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ),9^hJ1+@  
    Change in Focus                :       0.000000                            0.000000 7Y`/w$  
    Decenter Y tolerance on surfaces 1 through 3 2!Bjs?K<bv  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 fi5x0El  
    Change in Focus                :       0.000000                            0.000000 D%L}vugxK  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ('H[[YODh  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 7 &y'\  
    Change in Focus                :       0.000000                            0.000000 B d#D*"gx  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) vrr&Ve  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "bI'XaSv  
    Change in Focus                :       0.000000                            0.000000 > /,7j:X  
    Decenter X tolerance on surface 1 z8HOig?  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 zGtWyXP  
    Change in Focus                :       0.000000                            0.000000 dso6ZRx  
    Decenter Y tolerance on surface 1 .M3]\I u  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 c&!EsMsU  
    Change in Focus                :       0.000000                            0.000000 8Z YF%  
    Tilt X tolerance on surface (degrees) 1 2=P.$Kx  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 tOn 6  
    Change in Focus                :       0.000000                            0.000000 o:`>r/SlL  
    Tilt Y tolerance on surface (degrees) 1 }.j<kmd  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 TqzL]'NS+  
    Change in Focus                :       0.000000                            0.000000 S8 +GM  
    Decenter X tolerance on surface 2 <g/Z(<{wor  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 yV;_]_EO  
    Change in Focus                :       0.000000                            0.000000 IM""s]  
    Decenter Y tolerance on surface 2 *G'R+_tdE  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ={HYwP;  
    Change in Focus                :       0.000000                            0.000000 ZbmBwW_ 7  
    Tilt X tolerance on surface (degrees) 2 >ZAb9=/M)F  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 : ,0F_["3  
    Change in Focus                :       0.000000                            0.000000 *fz]Q>2ga  
    Tilt Y tolerance on surface (degrees) 2 z?ck*9SZX  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 AoL2Wrk]\B  
    Change in Focus                :       0.000000                            0.000000 dj>ZHdTn  
    Decenter X tolerance on surface 3 /Y NV  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ="~yD[S  
    Change in Focus                :       0.000000                            0.000000 p6UPP|-S  
    Decenter Y tolerance on surface 3 %}T' 3  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 "x;|li3;  
    Change in Focus                :       0.000000                            0.000000 BU3VXnqT[  
    Tilt X tolerance on surface (degrees) 3 :Z(w,  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ^0 zWiX  
    Change in Focus                :       0.000000                            0.000000 c34s(>AC  
    Tilt Y tolerance on surface (degrees) 3 {KH!PAh  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 dfo_R  
    Change in Focus                :       0.000000                            0.000000 Me*woCos'  
    Irregularity of surface 1 in fringes jv8diQ.  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 /UwB6s(  
    Change in Focus                :       0.000000                            0.000000 l1<]pdLTR  
    Irregularity of surface 2 in fringes \FE  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 # Uc0 W  
    Change in Focus                :       0.000000                            0.000000 #3fS_;G  
    Irregularity of surface 3 in fringes w6b\l1Z  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 #*J+4a w3  
    Change in Focus                :       0.000000                            0.000000 `5J`<BPs  
    Index tolerance on surface 1 u 2)#Ml  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 OI@;ffHSW  
    Change in Focus                :       0.000000                            0.000000 `>kHJI4  
    Index tolerance on surface 2 #2dd`F8  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Ptj,9bf<\  
    Change in Focus                :       0.000000                           -0.000000 Ub>Pl,~'  
    zO@7V>2  
    Worst offenders: Cf~H9  
    Type                      Value      Criterion        Change cJIA/HQe  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 d9@Pze">e  
    TSTY   2             0.20000000     0.35349910    -0.19053324 >~+'V.CNW  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 G7|CwzMg  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Mk:k0,z  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 >q+q];=(  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ")gd)_FOS  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 n]K`ofjl^  
    TSTX   1             0.20000000     0.42678383    -0.11724851 tTX@Bb8  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 JPs R7f  
    TSTY   3             0.20000000     0.42861670    -0.11541563 D%WgE&wtM  
    F9N/_H*+  
    Estimated Performance Changes based upon Root-Sum-Square method: l(o;O.dLt  
    Nominal MTF                 :     0.54403234 GnCO{"n  
    Estimated change            :    -0.36299231 8!{;yz  
    Estimated MTF               :     0.18104003 kdr?I9kwW  
    != @U~X|cu  
    Compensator Statistics: |I0O|Zdv  
    Change in back focus: :o2^?k8k&#  
    Minimum            :        -0.000000  4E"OD+  
    Maximum            :         0.000000 o?9k{  
    Mean               :        -0.000000 *5Mg^}ZC5  
    Standard Deviation :         0.000000 6Cdc?#&  
    E~b Yk6  
    Monte Carlo Analysis: Q')0 T>F-  
    Number of trials: 20 $ts%SDM  
    v/1&V+"^kd  
    Initial Statistics: Normal Distribution K #f*LV5  
    J2va Kl  
      Trial       Criterion        Change BAJEn6f?  
          1     0.42804416    -0.11598818 }mhD2'E  
    Change in Focus                :      -0.400171 BGe&c,feIc  
          2     0.54384387    -0.00018847 `S&$y4|Vs  
    Change in Focus                :       1.018470 Za5bx,^  
          3     0.44510003    -0.09893230 CH`_4UAX%  
    Change in Focus                :      -0.601922 xs'vd:l.Pp  
          4     0.18154684    -0.36248550 ^")SU(`  
    Change in Focus                :       0.920681 j/C.='?%  
          5     0.28665820    -0.25737414 >$%rsc}^  
    Change in Focus                :       1.253875 Msk^H7  
          6     0.21263372    -0.33139862 FHoY=fCI  
    Change in Focus                :      -0.903878 Gtyy^tz[  
          7     0.40051424    -0.14351809 t%B ,ATW  
    Change in Focus                :      -1.354815 c~bTK" u  
          8     0.48754161    -0.05649072 ec$kcD!  
    Change in Focus                :       0.215922 8/tvS8I#y  
          9     0.40357468    -0.14045766 ,j'>}'wG)  
    Change in Focus                :       0.281783 6)@Y41H]C  
         10     0.26315315    -0.28087919 G#|`Bjv"aP  
    Change in Focus                :      -1.048393 I_h8)W  
         11     0.26120585    -0.28282649 Zy<gA >  
    Change in Focus                :       1.017611 oD@~wcMIT0  
         12     0.24033815    -0.30369419 bPe|/wp  
    Change in Focus                :      -0.109292 ^hMJNy&R  
         13     0.37164046    -0.17239188 pOe"S  
    Change in Focus                :      -0.692430 mvCH$}w8&  
         14     0.48597489    -0.05805744 RKt#2%FFO  
    Change in Focus                :      -0.662040  hxedQvW  
         15     0.21462327    -0.32940907 aYmC LLj  
    Change in Focus                :       1.611296 pyf/%9R:d  
         16     0.43378226    -0.11025008 NI1jJfH|l  
    Change in Focus                :      -0.640081 _a?(JzLw5  
         17     0.39321881    -0.15081353 7I_1Lnnf  
    Change in Focus                :       0.914906 BS6UXAf{|Z  
         18     0.20692530    -0.33710703 @77%15_Jz  
    Change in Focus                :       0.801607 Z0(}doh  
         19     0.51374068    -0.03029165 (B0tgg^jj,  
    Change in Focus                :       0.947293 jMH=lQ+8  
         20     0.38013374    -0.16389860 E|Q|Nx!6[  
    Change in Focus                :       0.667010 IwR/4LYI  
    Zeeixg-1<  
    Number of traceable Monte Carlo files generated: 20 -=+@/@nV  
    Kc%GxD`  
    Nominal     0.54403234 t3w:!' Ato  
    Best        0.54384387    Trial     2 ~0^d-,ZD5  
    Worst       0.18154684    Trial     4 v&8%t 7|  
    Mean        0.35770970 5 wT e?  
    Std Dev     0.11156454 Oh|KbM*vS  
    TsvF~Gdp  
    _>k&,p]y  
    Compensator Statistics: g aq"+@fH  
    Change in back focus: ^J[r<Dm8F  
    Minimum            :        -1.354815 HZ+l){u  
    Maximum            :         1.611296 Y[8GoqE|  
    Mean               :         0.161872 6UXDIg=  
    Standard Deviation :         0.869664 qkg`4'rLg  
    @gn}J'  
    90% >       0.20977951               _tJm0z!  
    80% >       0.22748071               I|SQhbi  
    50% >       0.38667627               _UqE -+&  
    20% >       0.46553746               E76#xsyhF  
    10% >       0.50064115                S 6|#9C&  
    IGtpL[.;/  
    End of Run. &`9p.  
    DC5^k[m  
    这就有了些疑问,为什么我选择的补偿器是近轴焦点,而分析结果近轴焦点都不变化??应该是变得。另外最后的蒙特卡洛分析,只有10%的大于0.5(我用的是MTF作为评价方式),可是我设计的MTF如图 %+{[%?xh  
    *Bse3%-v  
    "s!|8F6$  
    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 t.ci!#/d  
    uE]kv  
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    离线sansummer
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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?
    离线sansummer
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 #j?SdQ  
    80% >       0.22748071                 B'kV.3t  
    50% >       0.38667627                 D J:N  
    20% >       0.46553746                 %!vgAH4  
    10% >       0.50064115 eM1=r:jgE  
    F70_N($i  
    最后这个数值是MTF值呢,还是MTF的公差? z5k9|.hgw  
    !VXs yH3r5  
    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???   2l YA% n  
    (=/%_jj  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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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  : u40k9vh  
    90% >       0.20977951                 x,3oa_'E  
    80% >       0.22748071                 hny):59f  
    50% >       0.38667627                 G3.MS7 J  
    20% >       0.46553746                 ` s}v6  
    10% >       0.50064115 -A\J:2a|  
    ....... T&5dF9a  
    @Qa)@'u  
    YnCWmlC  
    这些数值都是MTF值
    离线天地大同
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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   wF`9}9q  
    Mode                : Sensitivities l*l(QvN_  
    Sampling            : 2 f17pwJ~=  
    Nominal Criterion   : 0.54403234 tvC7LLNP<  
    Test Wavelength     : 0.6328 4eOQP  
     mB:I8g7  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
    离线sansummer
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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? U[S#axak  
    ?1I0VA']  
    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?
    离线天地大同
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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
    离线sansummer
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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?
    离线天地大同
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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