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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 Qi=pP/Y  
    B>;`$-  
    im-XP@<  
    ykS-5E`  
    然后添加了默认公差分析，基本没变 ,q K'!  
    B*@0l:  
    0Yk$f1g  
    ^KF%Z2:$  
    然后运行分析的结果如下： uFUVcWt  
    <WiyM[ ep  
    Analysis of Tolerances >2s31 {  
    : GdLr  
    File : E:\光学设计资料\zemax练习\f500.ZMX Ja7yq{j  
    Title: Q{o]^tN  
    Date : TUE JUN 21 2011 ?mp}_x#=  
    FyhLMW3  
    Units are Millimeters. jtv<{7a  
    All changes are computed using linear differences. ;%Zu[G`C  
    iw{rns  
    Paraxial Focus compensation only. yog(  
    pwg\b  
    WARNING: Solves should be removed prior to tolerancing. V r7L9%/wg  
    )i^ S:2  
    Mnemonics: [9C{\t  
    TFRN: Tolerance on curvature in fringes. YXLZ2-%ohZ  
    TTHI: Tolerance on thickness. ;S?ei>Q  
    TSDX: Tolerance on surface decentering in x. e9;5.m  
    TSDY: Tolerance on surface decentering in y. zq'KX/o  
    TSTX: Tolerance on surface tilt in x (degrees). vn x+1T  
    TSTY: Tolerance on surface tilt in y (degrees). M,vCAZ  
    TIRR: Tolerance on irregularity (fringes). nu `R(2/  
    TIND: Tolerance on Nd index of refraction. 2 {xf{)hO?  
    TEDX: Tolerance on element decentering in x. 4*&2D-8<K  
    TEDY: Tolerance on element decentering in y. Y`*h#{|  
    TETX: Tolerance on element tilt in x (degrees). |/X+2K}3  
    TETY: Tolerance on element tilt in y (degrees). "=Cjm`9~j  
    NtG^t}V  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. AIG5a$}&  
    no,b_0@N  
    WARNING: Boundary constraints on compensators will be ignored. 2dCD.9s9~  
    FL[,?RU?2  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm YS bS.tq  
    Mode                : Sensitivities XI>HC'.0  
    Sampling            : 2 bo-lT-I  
    Nominal Criterion   : 0.54403234 `PtfPt<{  
    Test Wavelength     : 0.6328 r]deVd G  
    cKB1o0JsYJ  
    ?/fC"MJq?  
    Fields: XY Symmetric Angle in degrees V X.9mt  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY GGU>={D)  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 }2''}-Nc  
    KjK-#F,@  
    Sensitivity Analysis: $#-O^0D  
    y[';@t7CC  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| /pWKV>tjj  
    Type                      Value      Criterion        Change          Value      Criterion        Change 7 &iav2q  
    Fringe tolerance on surface 1 CsJ&,(s(  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 M%bD7naBq  
    Change in Focus                :      -0.000000                            0.000000 +W"DN5UV  
    Fringe tolerance on surface 2 :{ Lihe~\  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 S|O#KE  
    Change in Focus                :       0.000000                            0.000000 'F^1)Ga$  
    Fringe tolerance on surface 3 skF}_  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 s]pNT1,  
    Change in Focus                :      -0.000000                            0.000000 [JEf P/n|.  
    Thickness tolerance on surface 1 ?&D.b$  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 u =lsH  
    Change in Focus                :       0.000000                            0.000000 +t8#rT ^B  
    Thickness tolerance on surface 2 C$d b) 5-  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 9vBW CCf  
    Change in Focus                :       0.000000                           -0.000000 H`4KhdqR  
    Decenter X tolerance on surfaces 1 through 3 };g<|v*o  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 _Mi*Fvj  
    Change in Focus                :       0.000000                            0.000000 5nXmaj  
    Decenter Y tolerance on surfaces 1 through 3 ?>NX}~2cf  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 GC[Ot~*_  
    Change in Focus                :       0.000000                            0.000000 L0qL\>#ejr  
    Tilt X tolerance on surfaces 1 through 3 (degrees) -Np}<O`./  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314  = Atyy  
    Change in Focus                :       0.000000                            0.000000 eMtQa;Lc9o  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) x$z>.4  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 _adW>-wQ!d  
    Change in Focus                :       0.000000                            0.000000 |Es,$  
    Decenter X tolerance on surface 1 y;f nC5Q  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ~En]sj  
    Change in Focus                :       0.000000                            0.000000 WO*dO9O  
    Decenter Y tolerance on surface 1 -0+h&CO  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 !`dMTW  
    Change in Focus                :       0.000000                            0.000000 aWY#gI{  
    Tilt X tolerance on surface (degrees) 1 $XcuU sG  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Y+gNi_dE  
    Change in Focus                :       0.000000                            0.000000 A#gy[.Bb  
    Tilt Y tolerance on surface (degrees) 1 6('CB|ga  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 /k KVIlO  
    Change in Focus                :       0.000000                            0.000000 GQYB2{e>  
    Decenter X tolerance on surface 2 @xr}(.  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 @[#)zO  
    Change in Focus                :       0.000000                            0.000000 mOJ-M@ME  
    Decenter Y tolerance on surface 2 tlgg~MViS  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 #Eqx E o;  
    Change in Focus                :       0.000000                            0.000000 _sQhDi  
    Tilt X tolerance on surface (degrees) 2 ;Q<2Y#  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 P&Wf.qr{:  
    Change in Focus                :       0.000000                            0.000000 2]Ei4%jo  
    Tilt Y tolerance on surface (degrees) 2 |`d-;pk!%  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 xu@+b~C\  
    Change in Focus                :       0.000000                            0.000000 %?J-0  
    Decenter X tolerance on surface 3 2+yti,s+/  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 j2oU1' b  
    Change in Focus                :       0.000000                            0.000000 (Ft#6oK"  
    Decenter Y tolerance on surface 3 NYeL1h)l  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 e"ClG/M_XS  
    Change in Focus                :       0.000000                            0.000000 > 0c g  
    Tilt X tolerance on surface (degrees) 3 ^xq)Q?[{  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 L$?YbQo7  
    Change in Focus                :       0.000000                            0.000000 S~B{G T\M  
    Tilt Y tolerance on surface (degrees) 3 zANsv9R~  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 OG^#e+  
    Change in Focus                :       0.000000                            0.000000 Kc`#~-`,(  
    Irregularity of surface 1 in fringes a``Q}.ST  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ;".]W;I*O  
    Change in Focus                :       0.000000                            0.000000 B-wF1! Jv  
    Irregularity of surface 2 in fringes vb$i00?  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 GD4+f|1.*  
    Change in Focus                :       0.000000                            0.000000 V=E5pB`Pr  
    Irregularity of surface 3 in fringes @eP(j@(^  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 !!6g<S7)  
    Change in Focus                :       0.000000                            0.000000 OKnpG*)u=g  
    Index tolerance on surface 1 0NXaAf:2Z  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 `~1#X  
    Change in Focus                :       0.000000                            0.000000 !3\( d{  
    Index tolerance on surface 2 EV_u8?va  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Bpv"qU7  
    Change in Focus                :       0.000000                           -0.000000 :JK+V2B$H  
    Dk}txw}#  
    Worst offenders: )H{OqZZYD  
    Type                      Value      Criterion        Change nX<yB9bXDg  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 S^r[%l<'n  
    TSTY   2             0.20000000     0.35349910    -0.19053324 hmI> 7@&  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 NZ- 57Ji  
    TSTX   2             0.20000000     0.35349910    -0.19053324 y 27MG  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 wvH*<,8V q  
    TSTY   1             0.20000000     0.42678383    -0.11724851 fwSI"cfM  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 9Yji34eDZ  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Lt {&v ^y  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 MpJ]1  
    TSTY   3             0.20000000     0.42861670    -0.11541563 JQSczE3  
    Hqb-)8 ~  
    Estimated Performance Changes based upon Root-Sum-Square method: tY60~@YO&  
    Nominal MTF                 :     0.54403234 I9YMxf>nI  
    Estimated change            :    -0.36299231 d V3R)  
    Estimated MTF               :     0.18104003 o:@A%*jg  
    ]E1|^[y  
    Compensator Statistics: J74kK#uF=  
    Change in back focus: T/q*k)IoR  
    Minimum            :        -0.000000 C+0BV~7J<<  
    Maximum            :         0.000000 #^w8Y'{?  
    Mean               :        -0.000000 JiGS[tR  
    Standard Deviation :         0.000000 Pk:b:(4  
    =9A!5  
    Monte Carlo Analysis: qR^+K@ *|  
    Number of trials: 20 u9{Z*w3L7  
    (n2=.9k!  
    Initial Statistics: Normal Distribution 1(/rg  
    I}\`l+  
      Trial       Criterion        Change u4Z Accj  
          1     0.42804416    -0.11598818 YGZa##i  
    Change in Focus                :      -0.400171 C{YTHN n  
          2     0.54384387    -0.00018847 S>R40T=e  
    Change in Focus                :       1.018470 \ZC0bHsA  
          3     0.44510003    -0.09893230 F#|mN0op  
    Change in Focus                :      -0.601922 8[IR;gZf  
          4     0.18154684    -0.36248550 xfA@GYCfT  
    Change in Focus                :       0.920681 ?d)FYB  
          5     0.28665820    -0.25737414 PBAQ KQ  
    Change in Focus                :       1.253875 `W u.wx  
          6     0.21263372    -0.33139862 8%;]]{(B  
    Change in Focus                :      -0.903878 NZuylQ)0  
          7     0.40051424    -0.14351809 wArzMt}[  
    Change in Focus                :      -1.354815 /[|A(,N}{  
          8     0.48754161    -0.05649072 /%P,y+<}iG  
    Change in Focus                :       0.215922 Oma G|2u  
          9     0.40357468    -0.14045766 J!iK W  
    Change in Focus                :       0.281783 }QJ6"s  
         10     0.26315315    -0.28087919 "SV/'0  
    Change in Focus                :      -1.048393 !D 9V9p  
         11     0.26120585    -0.28282649 78E<_UgcB  
    Change in Focus                :       1.017611 U.J/ "}5`T  
         12     0.24033815    -0.30369419 8[u$CTl7a  
    Change in Focus                :      -0.109292 P,7beHjf  
         13     0.37164046    -0.17239188 q`@8  
    Change in Focus                :      -0.692430 ExSy/^4f  
         14     0.48597489    -0.05805744 -7m7.>/M  
    Change in Focus                :      -0.662040 2bTM0-  
         15     0.21462327    -0.32940907 7/FF}d  
    Change in Focus                :       1.611296 &DWSu`z  
         16     0.43378226    -0.11025008 z_87 ;y;=  
    Change in Focus                :      -0.640081 ksQw|>K  
         17     0.39321881    -0.15081353 XI5q>cd\Sz  
    Change in Focus                :       0.914906 yu=(m~KX   
         18     0.20692530    -0.33710703 I(+%`{Wv  
    Change in Focus                :       0.801607 Ml+O - 3T  
         19     0.51374068    -0.03029165 bYy7Ul6]  
    Change in Focus                :       0.947293 Pol c.  
         20     0.38013374    -0.16389860 Wp//SV  
    Change in Focus                :       0.667010 $!:xjb  
    n<MreKixE  
    Number of traceable Monte Carlo files generated: 20 &=l aZxe  
    vFsl]|<;8  
    Nominal     0.54403234 Ai5D[ykX  
    Best        0.54384387    Trial     2 ]]|vQA^  
    Worst       0.18154684    Trial     4 {(^%2dk83C  
    Mean        0.35770970 ?yAjxoE~?  
    Std Dev     0.11156454 3!u:*ibt  
    >2K:O\&  
    \yY2 mr  
    Compensator Statistics: .q9i10C  
    Change in back focus: 8#15*'Y  
    Minimum            :        -1.354815 /@]@Tz@'  
    Maximum            :         1.611296 E7|P\^}m(f  
    Mean               :         0.161872 gv9z`[erS  
    Standard Deviation :         0.869664 YMn_9s7<  
    \rmge4`4  
    90% >       0.20977951               yUu+68Z6  
    80% >       0.22748071               jLreN#:9  
    50% >       0.38667627               %o#|zaK  
    20% >       0.46553746               Y>PC>  
    10% >       0.50064115                oCuKmK8  
    mf)E%qo  
    End of Run. BY??X=  
    9d&}CZr  
    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 NU!B|l  
    ,98`tB0  
    4GqE%n+ta~  
    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 LArfX,x3i  
     ~b LhI  
    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                 [49Ae2W`  
    80% >       0.22748071                 \P7y&`|  
    50% >       0.38667627                 +~1~f'4J  
    20% >       0.46553746                 ?<-ins  
    10% >       0.50064115 +K03yphZr  
    g\foBK:GE  
    最后这个数值是MTF值呢，还是MTF的公差？ Yq0=4#_  
    d3K-|  
    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？？？   n 0CS =  
    ]~-vU{  
    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  : gYy9N=f+  
    90% >       0.20977951                 Ud8*yB  
    80% >       0.22748071                 x6c#[:R&  
    50% >       0.38667627                 9?_ybO~Oq  
    20% >       0.46553746                 8 K/o/  
    10% >       0.50064115 w(xRL#%  
    ....... =!cI@TI  
    w>W`8P_b@  
    %g<J"/  
    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   l< y9ue=  
    Mode                : Sensitivities d$G<g78D  
    Sampling            : 2 (3=(g  
    Nominal Criterion   : 0.54403234 o,sw[  
    Test Wavelength     : 0.6328 s;0eD5b>x  
    g}-Ch#  
    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？ Rro{A+[,X  
    Jb~-)n2  
    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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