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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 qJjXN+/D  
    ~}uv4;0l]  
    \Wdl1 =`  
    7Hghn"ol  
    然后添加了默认公差分析,基本没变 $;kFuJF  
    ^?pf.E!F`  
    (HNxo{t  
    )?5027^  
    然后运行分析的结果如下: +iS'$2)@  
    T:v.]0l~  
    Analysis of Tolerances bYPkqitqz  
    eWKFs)C]  
    File : E:\光学设计资料\zemax练习\f500.ZMX 7_OC&hhL  
    Title: Gv ';  
    Date : TUE JUN 21 2011 6`K R  
    UL9]LEGG  
    Units are Millimeters. Rm@#GP`  
    All changes are computed using linear differences. [v@3|@  
    ]><K8N3Z  
    Paraxial Focus compensation only. 06ndW9>wD)  
    N>R\,n|I  
    WARNING: Solves should be removed prior to tolerancing. k|C~qe3E  
    Xk9mJ]31LC  
    Mnemonics: fQW1&lFT  
    TFRN: Tolerance on curvature in fringes. F$L2bgQR?'  
    TTHI: Tolerance on thickness. " ^v/Y  
    TSDX: Tolerance on surface decentering in x. $|kq{@<  
    TSDY: Tolerance on surface decentering in y. jL9g.q4^  
    TSTX: Tolerance on surface tilt in x (degrees). -cgLEl1J  
    TSTY: Tolerance on surface tilt in y (degrees). i-.]onR  
    TIRR: Tolerance on irregularity (fringes). TLcev*  
    TIND: Tolerance on Nd index of refraction. \,UpFuU\  
    TEDX: Tolerance on element decentering in x. <z'Pj7c[  
    TEDY: Tolerance on element decentering in y. Vd+qi~kA  
    TETX: Tolerance on element tilt in x (degrees). ;jgk53lo  
    TETY: Tolerance on element tilt in y (degrees). 4>x$I9^Y!  
    A-n@:` n~  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 1c5+X Cr  
    NO)Hi)$X6Y  
    WARNING: Boundary constraints on compensators will be ignored. jHPkfwfAF  
    BlLK6"gJT  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm \ltbiDP2  
    Mode                : Sensitivities ^sF/-/ {?U  
    Sampling            : 2 B$=oU   
    Nominal Criterion   : 0.54403234 DOaTp f  
    Test Wavelength     : 0.6328  :EGvI  
    (:(Im k;9  
    (Q]Ww_r~  
    Fields: XY Symmetric Angle in degrees dd+hX$,  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY lfJvN  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 aru;yR  
    `49: !M$i  
    Sensitivity Analysis: qjBF]3%t%  
    WyA`V C  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| <E2n M,  
    Type                      Value      Criterion        Change          Value      Criterion        Change !_?K(X~/  
    Fringe tolerance on surface 1 GhJ<L3  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 vpg*J/1[  
    Change in Focus                :      -0.000000                            0.000000 0hN gr'  
    Fringe tolerance on surface 2 x/S:)z%X  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ]|xfKDu  
    Change in Focus                :       0.000000                            0.000000 ]>9[}'u  
    Fringe tolerance on surface 3 .](~dVp%~  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 &Z3u(Eb  
    Change in Focus                :      -0.000000                            0.000000 Z|#G+$"QV  
    Thickness tolerance on surface 1 wsKOafrV  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 .OM^@V~T  
    Change in Focus                :       0.000000                            0.000000 r"_U-w  
    Thickness tolerance on surface 2 C8Oh]JF4d  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 5cF7w  
    Change in Focus                :       0.000000                           -0.000000 YHp]O+c  
    Decenter X tolerance on surfaces 1 through 3 $~ >/_<~  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 .A Dik}o  
    Change in Focus                :       0.000000                            0.000000 g`Kh&|GU  
    Decenter Y tolerance on surfaces 1 through 3 qg06*$%  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ,I2x&Ys&.  
    Change in Focus                :       0.000000                            0.000000 I^GZ9@UE  
    Tilt X tolerance on surfaces 1 through 3 (degrees) L^FQ|?*  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 r`\6+Ntb.  
    Change in Focus                :       0.000000                            0.000000 #?h-<KQQ  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) l!*!)qCB(S  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 H5eGl|Z5]^  
    Change in Focus                :       0.000000                            0.000000 u2E}DhV  
    Decenter X tolerance on surface 1 ?mp}_x#=  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 \S_o{0ZY}  
    Change in Focus                :       0.000000                            0.000000 4[lym,8C  
    Decenter Y tolerance on surface 1 ;%Zu[G`C  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 iw{rns  
    Change in Focus                :       0.000000                            0.000000 yog(  
    Tilt X tolerance on surface (degrees) 1 6n?0MMtR  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ["H2H rI2  
    Change in Focus                :       0.000000                            0.000000 xFScj0Y  
    Tilt Y tolerance on surface (degrees) 1 Aa`R40yl  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 +zg3/C4 S  
    Change in Focus                :       0.000000                            0.000000 0: Nw8J  
    Decenter X tolerance on surface 2 gSk0#Jt  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Kgw, ]E&7  
    Change in Focus                :       0.000000                            0.000000 %BwvA_T'Q  
    Decenter Y tolerance on surface 2 <{cf'"O7)  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 M^&^g  
    Change in Focus                :       0.000000                            0.000000 o_sb+Vn|  
    Tilt X tolerance on surface (degrees) 2 5h l!zA?  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 v ;nnr0;  
    Change in Focus                :       0.000000                            0.000000 cz41<SFL  
    Tilt Y tolerance on surface (degrees) 2 3kavzB[  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 tiPZ.a~k  
    Change in Focus                :       0.000000                            0.000000 T0X+\&W  
    Decenter X tolerance on surface 3 <xlyk/  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Y#zHw< <E  
    Change in Focus                :       0.000000                            0.000000 f;%=S:3  
    Decenter Y tolerance on surface 3 tx$`1KA  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 c=f;3N  
    Change in Focus                :       0.000000                            0.000000 Y~B-dx'V  
    Tilt X tolerance on surface (degrees) 3 =eQ'^3a  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 v[4-?7-  
    Change in Focus                :       0.000000                            0.000000 LO;6g~(1  
    Tilt Y tolerance on surface (degrees) 3 ID~}pEQ  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ncpNesB  
    Change in Focus                :       0.000000                            0.000000 GGU>={D)  
    Irregularity of surface 1 in fringes P>hR${KE  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 2f5YkmGc";  
    Change in Focus                :       0.000000                            0.000000 Y^QG\6q  
    Irregularity of surface 2 in fringes }_oQg_-7e  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 VQI[ J  
    Change in Focus                :       0.000000                            0.000000 .wPI%5D  
    Irregularity of surface 3 in fringes ! JauMR  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 O$7r)B6Cs  
    Change in Focus                :       0.000000                            0.000000 Z4dl'v)9  
    Index tolerance on surface 1 X`A+/{ H  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 hz+c]K  
    Change in Focus                :       0.000000                            0.000000 I&f!>y?,Z  
    Index tolerance on surface 2 >W6?!ue_  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 bR<XQHl  
    Change in Focus                :       0.000000                           -0.000000 g~XR#vl$  
    zym6b@+jN  
    Worst offenders: MDoV84Fh  
    Type                      Value      Criterion        Change :pLaxWus!  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 7.tIf <^$P  
    TSTY   2             0.20000000     0.35349910    -0.19053324 oml^f~pm  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 >J_(~{-sNG  
    TSTX   2             0.20000000     0.35349910    -0.19053324 K}vYE7n:  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 _2WW0  
    TSTY   1             0.20000000     0.42678383    -0.11724851 i,mZg+;w  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 ! u9LZ  
    TSTX   1             0.20000000     0.42678383    -0.11724851 y\=^pla  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 W)AfXy  
    TSTY   3             0.20000000     0.42861670    -0.11541563 %?BygG  
    "%w E>E  
    Estimated Performance Changes based upon Root-Sum-Square method: ]4B&8n!  
    Nominal MTF                 :     0.54403234 T~ P<Gq} ,  
    Estimated change            :    -0.36299231 O f]/tdPp  
    Estimated MTF               :     0.18104003 'u9y\vUy  
    6$t+Q~2G!  
    Compensator Statistics: XrJLlH>R4  
    Change in back focus: C[CNJ66  
    Minimum            :        -0.000000 )O8w'4P5  
    Maximum            :         0.000000 QTU$mC]  
    Mean               :        -0.000000 hX:yn:P~  
    Standard Deviation :         0.000000 p: u@? k  
    Oo/@A_JO@  
    Monte Carlo Analysis: [*g'Y;W  
    Number of trials: 20 }[y_Fr0  
    AG|:mQO  
    Initial Statistics: Normal Distribution v?l*jr1-2  
    |=[. _VH1  
      Trial       Criterion        Change cvC 7#i[G  
          1     0.42804416    -0.11598818 4MoxP  
    Change in Focus                :      -0.400171 <CWOx&hr  
          2     0.54384387    -0.00018847 \"9ysePI  
    Change in Focus                :       1.018470 4$+/7I \  
          3     0.44510003    -0.09893230 _ Gkb[H&RZ  
    Change in Focus                :      -0.601922 SP4(yJy&  
          4     0.18154684    -0.36248550 Y?%=6S  
    Change in Focus                :       0.920681 bp'\nso/  
          5     0.28665820    -0.25737414 k/i&e~! \  
    Change in Focus                :       1.253875 >6|Xvtf  
          6     0.21263372    -0.33139862 FAq9G-\B  
    Change in Focus                :      -0.903878 >gDKkeLD  
          7     0.40051424    -0.14351809 l4y>uZ>a  
    Change in Focus                :      -1.354815 5k;}I|rg%  
          8     0.48754161    -0.05649072 91UC>]}H  
    Change in Focus                :       0.215922 TVK*l*  
          9     0.40357468    -0.14045766 -kb;h F}.  
    Change in Focus                :       0.281783 cHJ4[x=  
         10     0.26315315    -0.28087919 Wf =hFc1_@  
    Change in Focus                :      -1.048393 d~y]7h|  
         11     0.26120585    -0.28282649 Zbf~E {  
    Change in Focus                :       1.017611 zANsv9R~  
         12     0.24033815    -0.30369419 s qO$ka{  
    Change in Focus                :      -0.109292 K<v:RbU|[1  
         13     0.37164046    -0.17239188 k)agbx  
    Change in Focus                :      -0.692430 pwl7aC+6d  
         14     0.48597489    -0.05805744 WL;2&S/{@  
    Change in Focus                :      -0.662040 L(}/W~En  
         15     0.21462327    -0.32940907 {w ]L'0ES[  
    Change in Focus                :       1.611296 LAuaowE\v  
         16     0.43378226    -0.11025008 j3fq}>=  
    Change in Focus                :      -0.640081 8aVj@x$'  
         17     0.39321881    -0.15081353 H<   
    Change in Focus                :       0.914906 2 ;Q|h$ n  
         18     0.20692530    -0.33710703 '\P+Bu]6&  
    Change in Focus                :       0.801607 *LQt=~  
         19     0.51374068    -0.03029165 ySH io;g9  
    Change in Focus                :       0.947293 /a\]Dwj5  
         20     0.38013374    -0.16389860 gH0Rd WX  
    Change in Focus                :       0.667010 Q@rlqWgU ~  
    5KW n>n  
    Number of traceable Monte Carlo files generated: 20 ;pG5zRe  
    {?X9juc/#  
    Nominal     0.54403234 bLO^5`6  
    Best        0.54384387    Trial     2 R.rE+gxO1  
    Worst       0.18154684    Trial     4 W7w*VD|  
    Mean        0.35770970 .8XkB<[wb  
    Std Dev     0.11156454 @1V?94T1  
    n M `pnR_  
    oP:/%  
    Compensator Statistics: *enT2Q  
    Change in back focus: F ZN}T{<  
    Minimum            :        -1.354815 B~%SB/eu  
    Maximum            :         1.611296 $HAwd6NI  
    Mean               :         0.161872 NYPjN9L  
    Standard Deviation :         0.869664 d V3R)  
    $Q`\-  
    90% >       0.20977951               G4"n`89LK  
    80% >       0.22748071               l>pnY%(A  
    50% >       0.38667627               Rc}#4pM8  
    20% >       0.46553746               %Z yt;p2  
    10% >       0.50064115                p+Fh9N<F9  
    T8Ye+eP}  
    End of Run. o 'Z W  
    D\  P-|}  
    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 -_f-j  
    N._^\FRyn  
    {%z5^o1)  
    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 avd`7eH2  
    /Mw0<#  
    不吝赐教
     
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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                 U.J/ "}5`T  
    80% >       0.22748071                 #a!qJeWm0  
    50% >       0.38667627                 BSg 3  
    20% >       0.46553746                 IR"=8w#MP  
    10% >       0.50064115 f:h<tlob  
    27UnH: =  
    最后这个数值是MTF值呢,还是MTF的公差? O2Tna<cR&  
    oTf^-29d  
    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???   +  $/mh  
    =Ka :i>  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : S&;D  
    90% >       0.20977951                 .l~g`._  
    80% >       0.22748071                 zNJ-JIo%  
    50% >       0.38667627                 =idZvD  
    20% >       0.46553746                 2f.4P]s`T  
    10% >       0.50064115 F[==vte|  
    ....... "QCViR  
    \UBQ:+3  
    = j S  
    这些数值都是MTF值
    离线天地大同
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   wT-@v,$  
    Mode                : Sensitivities (Y$48@x  
    Sampling            : 2 q. NvwJ  
    Nominal Criterion   : 0.54403234 ouR(l;  
    Test Wavelength     : 0.6328 rty&\u@}  
    odC}RdN  
    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? Bwg\_:vq  
    Ba /^CS  
    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
    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