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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 'RhS%l  
    GlTpK^.  
    9(O eH7  
    'S9o!hb'@  
    然后添加了默认公差分析，基本没变 X7AxI\h  
    bmK  
    y`L.#5T  
    P+ CdqOL  
    然后运行分析的结果如下： |JF,n~n  
    U._fb=  
    Analysis of Tolerances `e~i<Pi  
    Du65>O  
    File : E:\光学设计资料\zemax练习\f500.ZMX 24k]X`/n  
    Title: A%?c1`ZxF  
    Date : TUE JUN 21 2011 7<*0fy5nn  
    t&Eiz H$  
    Units are Millimeters. {:*G/*1[.  
    All changes are computed using linear differences. /*{'p!?  
    `B4Ilh"d  
    Paraxial Focus compensation only. yn$1nt4  
    2>o^@4PnZ  
    WARNING: Solves should be removed prior to tolerancing. O ylUuYy~j  
    )^AZmUYZ  
    Mnemonics: C?>d$G8  
    TFRN: Tolerance on curvature in fringes. d'ZB{'[8p  
    TTHI: Tolerance on thickness. 1.k=ji$D0  
    TSDX: Tolerance on surface decentering in x. JVkuSIR>  
    TSDY: Tolerance on surface decentering in y. |;xEK nF  
    TSTX: Tolerance on surface tilt in x (degrees). =}Zl E  
    TSTY: Tolerance on surface tilt in y (degrees). ?d%{-  
    TIRR: Tolerance on irregularity (fringes). 5,s@K>9l;  
    TIND: Tolerance on Nd index of refraction. ymqv@Byi8A  
    TEDX: Tolerance on element decentering in x. vs[!B-  
    TEDY: Tolerance on element decentering in y. /g!ZU2&l  
    TETX: Tolerance on element tilt in x (degrees). 6H: fg  
    TETY: Tolerance on element tilt in y (degrees). *]NfT}}  
    W_E^+Wl@  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Khi;2{`  
    B>>_t2IU  
    WARNING: Boundary constraints on compensators will be ignored. &V$cwB  
    q4w]9b/  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm ]xMZo){[|  
    Mode                : Sensitivities ;`LG WT-<F  
    Sampling            : 2 jT$J~M pHh  
    Nominal Criterion   : 0.54403234 |8~)3P k  
    Test Wavelength     : 0.6328 K$,<<hl  
    _b&26!gl  
    0$c(<+D  
    Fields: XY Symmetric Angle in degrees A03io8D6  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY <!FcQVH+L  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 LEP TL#WT1  
    F"k`PF*b  
    Sensitivity Analysis: 9v`sSTlSd  
    tt2 S.j  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 7F0J*M  
    Type                      Value      Criterion        Change          Value      Criterion        Change 0Zwx3[bq6K  
    Fringe tolerance on surface 1 /eH37H  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 HM0&%  
    Change in Focus                :      -0.000000                            0.000000 ,(Zxd4?y  
    Fringe tolerance on surface 2 BXU0f%"8U  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Vdx o  
    Change in Focus                :       0.000000                            0.000000 Z;a)P.l.>  
    Fringe tolerance on surface 3 EC8Z. Uu  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 -O?HfQ  
    Change in Focus                :      -0.000000                            0.000000 Qx,#Hj  
    Thickness tolerance on surface 1 |[iO./ zP  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 aY? VP?BL  
    Change in Focus                :       0.000000                            0.000000 ;@ixrj0u  
    Thickness tolerance on surface 2 #GlFm?/6K/  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 }=R0AKz!Cv  
    Change in Focus                :       0.000000                           -0.000000 R/"-r^j  
    Decenter X tolerance on surfaces 1 through 3 S-o )d  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 "1^tVw|  
    Change in Focus                :       0.000000                            0.000000 y[.lfW?)  
    Decenter Y tolerance on surfaces 1 through 3 .rO~a.kG  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 "Hz%0zP&  
    Change in Focus                :       0.000000                            0.000000 )#i"hnYpQ  
    Tilt X tolerance on surfaces 1 through 3 (degrees) //|B?4kk  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 2;"vF9WMm  
    Change in Focus                :       0.000000                            0.000000 +`gU{e,p  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) Z T*}KJm  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 }JST(d&  
    Change in Focus                :       0.000000                            0.000000 :Bt,.uN C  
    Decenter X tolerance on surface 1 4(P<'FK $  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 \^9n&MonM  
    Change in Focus                :       0.000000                            0.000000 WgR%mm^  
    Decenter Y tolerance on surface 1 C^,b aCX  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 #tHYCSr]  
    Change in Focus                :       0.000000                            0.000000 /cx'(AT  
    Tilt X tolerance on surface (degrees) 1 a@jM%VZ  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 IFew3!{\  
    Change in Focus                :       0.000000                            0.000000 ]5QXiF8`  
    Tilt Y tolerance on surface (degrees) 1 d9S?dx  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 v&;JVai  
    Change in Focus                :       0.000000                            0.000000 E"p _!!1  
    Decenter X tolerance on surface 2 <)a$5"AP  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 dF 6od  
    Change in Focus                :       0.000000                            0.000000 -f ~1Id  
    Decenter Y tolerance on surface 2 s?m_zJh  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 BaI-ve  
    Change in Focus                :       0.000000                            0.000000 ob/<;SrU<  
    Tilt X tolerance on surface (degrees) 2 3=oxT6"k  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 |pBFmm*  
    Change in Focus                :       0.000000                            0.000000 r vq{Dfo=  
    Tilt Y tolerance on surface (degrees) 2 m%})H"5  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 m?yztm~u  
    Change in Focus                :       0.000000                            0.000000 r`sKe &  
    Decenter X tolerance on surface 3 ~Azj Y8  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 YI*H]V%w  
    Change in Focus                :       0.000000                            0.000000 @<$m`^H  
    Decenter Y tolerance on surface 3 G)NqIur*Z  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 >6&Rytcc]  
    Change in Focus                :       0.000000                            0.000000 k)D5>T  
    Tilt X tolerance on surface (degrees) 3 V*O[8s%5v  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 .YvIVQ  
    Change in Focus                :       0.000000                            0.000000 ewn\'RLZ"@  
    Tilt Y tolerance on surface (degrees) 3 OhN2FkxL  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 4@\$k+v  
    Change in Focus                :       0.000000                            0.000000 LqI&1$#  
    Irregularity of surface 1 in fringes Z?qLn6y1W  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 hP WP6;Z  
    Change in Focus                :       0.000000                            0.000000 JBHPI@Qt%  
    Irregularity of surface 2 in fringes >)NS U  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 E>-I |X"L1  
    Change in Focus                :       0.000000                            0.000000 )i.pE ]!+  
    Irregularity of surface 3 in fringes ;AVIt!(L~V  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 vJi<PQ6  
    Change in Focus                :       0.000000                            0.000000 `_1fa7,z  
    Index tolerance on surface 1 .Ow8C  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 *v(Q-FW  
    Change in Focus                :       0.000000                            0.000000 l44QB8 9  
    Index tolerance on surface 2 rrEf<A}  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 7D>_<)%d=  
    Change in Focus                :       0.000000                           -0.000000 HbPn<x^7  
    ADOA&r[  
    Worst offenders: F?FfRzZ[  
    Type                      Value      Criterion        Change z#`Qfvu6Hi  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 |N6.:K[`  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ;<T,W[3J  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 GNuIcy  
    TSTX   2             0.20000000     0.35349910    -0.19053324 ' e!WZvr  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 h$9ut@I  
    TSTY   1             0.20000000     0.42678383    -0.11724851 =a+  } 6  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 {0+WVZ4u  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Q;z!]hjBM  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 pZ*%zt]-a  
    TSTY   3             0.20000000     0.42861670    -0.11541563 -@]b7J?`k  
    C,mfA%63  
    Estimated Performance Changes based upon Root-Sum-Square method: T+RC#&>  
    Nominal MTF                 :     0.54403234 *]R5bj.!o  
    Estimated change            :    -0.36299231 Fkpaou  
    Estimated MTF               :     0.18104003 H0])>1sWB  
    IaO R%B g  
    Compensator Statistics: m:0[as=  
    Change in back focus: s~>1TxJe  
    Minimum            :        -0.000000 0k5uqGLXe  
    Maximum            :         0.000000 ]n"RPktx  
    Mean               :        -0.000000 ;-"q;&1e  
    Standard Deviation :         0.000000  tKh  
    2v@B7r4}  
    Monte Carlo Analysis: L[nDjQn"  
    Number of trials: 20 1k)pJzsc  
    Gl|n}wo$  
    Initial Statistics: Normal Distribution H n]( )/  
    {SXSQ'=  
      Trial       Criterion        Change nnT#S  
          1     0.42804416    -0.11598818 c1a$J`  
    Change in Focus                :      -0.400171 Tjv'S <  
          2     0.54384387    -0.00018847 E>5p7=Or;"  
    Change in Focus                :       1.018470 :O&jm.2m  
          3     0.44510003    -0.09893230 BAvz @H  
    Change in Focus                :      -0.601922 1/;E8{  
          4     0.18154684    -0.36248550 i0+e3!QU  
    Change in Focus                :       0.920681 [kxOv7a  
          5     0.28665820    -0.25737414 R6;#+ 1D  
    Change in Focus                :       1.253875 z'1%%.r;FM  
          6     0.21263372    -0.33139862 0m> 8  
    Change in Focus                :      -0.903878 E6O!e<ze^  
          7     0.40051424    -0.14351809 xqY'-Hom  
    Change in Focus                :      -1.354815 t18j2P>`  
          8     0.48754161    -0.05649072 ^"=G=* /  
    Change in Focus                :       0.215922 (jyufHm  
          9     0.40357468    -0.14045766 .GNyA DQp  
    Change in Focus                :       0.281783 b$*2bSdv0<  
         10     0.26315315    -0.28087919 FAM:; F30  
    Change in Focus                :      -1.048393 E11C@%  
         11     0.26120585    -0.28282649 rMjb,2*rC7  
    Change in Focus                :       1.017611 HYT~AO-!  
         12     0.24033815    -0.30369419 6`7bk35B  
    Change in Focus                :      -0.109292 /#@tv~Z^  
         13     0.37164046    -0.17239188 {5c?_U  
    Change in Focus                :      -0.692430 Ck %if  
         14     0.48597489    -0.05805744 ew dTsgt'  
    Change in Focus                :      -0.662040 x6!Q''f7  
         15     0.21462327    -0.32940907 BaIuOZ@,  
    Change in Focus                :       1.611296 LA 2/<:  
         16     0.43378226    -0.11025008 #l: 1R&F  
    Change in Focus                :      -0.640081 6P>}7R}  
         17     0.39321881    -0.15081353 ,!%E\`  
    Change in Focus                :       0.914906 W1)<!nwA  
         18     0.20692530    -0.33710703 p-EU"O  
    Change in Focus                :       0.801607 %+|sbRBb  
         19     0.51374068    -0.03029165 mDbTOtD  
    Change in Focus                :       0.947293 Z^4+ 88  
         20     0.38013374    -0.16389860 j} ^3v #  
    Change in Focus                :       0.667010 CP%^)LX *  
    &^HVuYa.0  
    Number of traceable Monte Carlo files generated: 20 f$-n %7  
    @b^$h:H  
    Nominal     0.54403234 7(tsmP  
    Best        0.54384387    Trial     2 kMnG1K  
    Worst       0.18154684    Trial     4 r[;d.3jtP  
    Mean        0.35770970 xJ. kd Tr  
    Std Dev     0.11156454 1>L'F8"  
    ~UO}PI`C  
    } }~a4p>%  
    Compensator Statistics: y6[le*T  
    Change in back focus: +5Dc5Bl  
    Minimum            :        -1.354815 VzHrKI  
    Maximum            :         1.611296 qs bo"29  
    Mean               :         0.161872 m}RZ )c  
    Standard Deviation :         0.869664 ,>kVVpu  
    SvvNk  
    90% >       0.20977951               ?{`7W>G  
    80% >       0.22748071               a`f@&A`z  
    50% >       0.38667627               dlCYdwP  
    20% >       0.46553746               v;;3 K*c>  
    10% >       0.50064115                5n}<V-yJ*m  
    BQg3+w:>  
    End of Run. 6XU p$Pd(  
    o}/|"(K  
    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 DQXcf*R  
    Xz)F-C27h  
    Ny/eYF#  
    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 g.hYhg'KUh  
    UdnRsp9S  
    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                 2 Kjd!~Z$  
    80% >       0.22748071                 +#BOWz  
    50% >       0.38667627                 ] T]{VB  
    20% >       0.46553746                 C7NSmZ  
    10% >       0.50064115  ]gcOMC  
    b-  t  
    最后这个数值是MTF值呢，还是MTF的公差？ ~:T@SrVI  
    _Wg}#r  
    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？？？   0g|5s  
    4FRi=d;mP  
    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  : "73y}'  
    90% >       0.20977951                 lUEbxN  
    80% >       0.22748071                 ?(=|!`IoO  
    50% >       0.38667627                 a pa&'%7  
    20% >       0.46553746                 q\o#<'F1J  
    10% >       0.50064115 z U[pn)pe  
    ....... Zwc&4:5%  
    tz;o6,eb  
    u5}:[4N%I  
    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   g.9C>>tj  
    Mode                : Sensitivities ?{TWsuP7  
    Sampling            : 2 I20~bW  
    Nominal Criterion   : 0.54403234 ivo><"Y(r  
    Test Wavelength     : 0.6328 X2A k  
    Gxe)5,G  
    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？ $||WI}k3V  
    ?+hEs =Xs  
    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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