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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 (>VX-Y/  
    --HF8_8;'  
    T(e!_VY|m  
    c}y [[EX  
    然后添加了默认公差分析，基本没变 FP;Ccl"s  
    P^w#S  
    }&n<uUDH  
    c8L~S/t  
    然后运行分析的结果如下： hg+X(0  
    }"=AG  
    Analysis of Tolerances *tgnYa[l  
    3~}uqaGt  
    File : E:\光学设计资料\zemax练习\f500.ZMX *Txl+zTY  
    Title: enp)-nS0  
    Date : TUE JUN 21 2011 TQx.KM>y  
    H2um|6>  
    Units are Millimeters. O)ME"@r@:  
    All changes are computed using linear differences. I9:Cb)hbU]  
    -TM 0]{  
    Paraxial Focus compensation only. +RnkJ* l  
    tZ^Ou89:rG  
    WARNING: Solves should be removed prior to tolerancing. 1E73i_L  
    jFA{+Yr1  
    Mnemonics: E}sO[wNPf  
    TFRN: Tolerance on curvature in fringes. F8;dKyT?q  
    TTHI: Tolerance on thickness. xER\ZpA :,  
    TSDX: Tolerance on surface decentering in x. EmODBTu+  
    TSDY: Tolerance on surface decentering in y. u86"Y ^d#  
    TSTX: Tolerance on surface tilt in x (degrees). \ C+(~9@|  
    TSTY: Tolerance on surface tilt in y (degrees). |lJX 3  
    TIRR: Tolerance on irregularity (fringes). n@U n  
    TIND: Tolerance on Nd index of refraction. 4?-.Z UT-1  
    TEDX: Tolerance on element decentering in x. [ { bV4  
    TEDY: Tolerance on element decentering in y. _~*,m#uxJ  
    TETX: Tolerance on element tilt in x (degrees). >B2:kY F  
    TETY: Tolerance on element tilt in y (degrees). H63,bNS s  
    }; f#^gz'  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 0&/b42W  
    Iz ;G*W18  
    WARNING: Boundary constraints on compensators will be ignored. );Z1a&K5k  
    M-[ $L XR  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm _cc#Qlw 7  
    Mode                : Sensitivities 7.Z@Wr?  
    Sampling            : 2 Y=?yhAw  
    Nominal Criterion   : 0.54403234 {K9/H qH  
    Test Wavelength     : 0.6328 n84GZ5O>7  
    sO.`x*  
    G.( mp<-  
    Fields: XY Symmetric Angle in degrees ~ug= {b  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Hd,p!_  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 e_/b2"{  
    LxpuhvIO  
    Sensitivity Analysis: ]79:yMD~ba  
    %K>.lh@  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| #{=;NuP  
    Type                      Value      Criterion        Change          Value      Criterion        Change :PtF+{N>  
    Fringe tolerance on surface 1 Clh!gpB c  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 Sr%;fq  
    Change in Focus                :      -0.000000                            0.000000 NMww>80  
    Fringe tolerance on surface 2 7c~u=U"  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 FIbp"~  
    Change in Focus                :       0.000000                            0.000000 3"G>>nC&  
    Fringe tolerance on surface 3 de>v  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 (s{RnD  
    Change in Focus                :      -0.000000                            0.000000 LrAT Sq@  
    Thickness tolerance on surface 1 S-YM%8A[  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 XK: 9r{r{  
    Change in Focus                :       0.000000                            0.000000 HO[wTB|D]  
    Thickness tolerance on surface 2 +3&z N(  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ^|TG$`M(w  
    Change in Focus                :       0.000000                           -0.000000 SF5@Vg  
    Decenter X tolerance on surfaces 1 through 3 T}4/0yR2  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 A0fFv+RN3  
    Change in Focus                :       0.000000                            0.000000 JqMDqPIQ  
    Decenter Y tolerance on surfaces 1 through 3 ak:ibV  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 {'AWZ(  
    Change in Focus                :       0.000000                            0.000000 Dgx8\~(E'  
    Tilt X tolerance on surfaces 1 through 3 (degrees) xY$iz)^0&  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 \TF!S"V  
    Change in Focus                :       0.000000                            0.000000 #?XQ7Im  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 3q`)*  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 RKPD4e>%  
    Change in Focus                :       0.000000                            0.000000 |QMhMGjV  
    Decenter X tolerance on surface 1 1y lk4@`  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 a\%xB >LX  
    Change in Focus                :       0.000000                            0.000000 IXb}AxB f  
    Decenter Y tolerance on surface 1 )x]3Zq  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 8Th` ]tI  
    Change in Focus                :       0.000000                            0.000000 tqy@iEz+  
    Tilt X tolerance on surface (degrees) 1 in(U:04  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 EZYBeqv  
    Change in Focus                :       0.000000                            0.000000 Q6XRsFc  
    Tilt Y tolerance on surface (degrees) 1 bcAvM;  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 NuYkz"O]  
    Change in Focus                :       0.000000                            0.000000 V~ TWKuR  
    Decenter X tolerance on surface 2 efD)S92  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 YFTjPBV  
    Change in Focus                :       0.000000                            0.000000 e#B#B  
    Decenter Y tolerance on surface 2 ]q6;#EUr?  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Vp<seO;7o  
    Change in Focus                :       0.000000                            0.000000 )LdyC`S\c  
    Tilt X tolerance on surface (degrees) 2 W,K%c=  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 VOr1  
    Change in Focus                :       0.000000                            0.000000 E7Ulnvd  
    Tilt Y tolerance on surface (degrees) 2 !=y]Sv~h  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 *A~ G_0B  
    Change in Focus                :       0.000000                            0.000000 0x9x@gF  
    Decenter X tolerance on surface 3 4pln5v=  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 i@][rdhT  
    Change in Focus                :       0.000000                            0.000000 u-1;'a  
    Decenter Y tolerance on surface 3 jM&r{^(  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 .)+h H y  
    Change in Focus                :       0.000000                            0.000000 5o/&T"]@  
    Tilt X tolerance on surface (degrees) 3 ~h"/Tce  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 !bC+TYsU  
    Change in Focus                :       0.000000                            0.000000 kvh&d|  
    Tilt Y tolerance on surface (degrees) 3 $46{<4.  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ]7Fs$y.  
    Change in Focus                :       0.000000                            0.000000 ~Aq5X I%i  
    Irregularity of surface 1 in fringes k6kM'e3V  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 cv(PP-'\  
    Change in Focus                :       0.000000                            0.000000 i_kE^SSgm  
    Irregularity of surface 2 in fringes =E&OuX-R  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 [|~2X>  
    Change in Focus                :       0.000000                            0.000000 }@+NN ?P  
    Irregularity of surface 3 in fringes kqb0>rYa   
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 $HG}[XD?  
    Change in Focus                :       0.000000                            0.000000 ?go:e#  
    Index tolerance on surface 1 zd_HxYrN  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 KIeT!kmDl  
    Change in Focus                :       0.000000                            0.000000 DOz\n|8S  
    Index tolerance on surface 2 m>}8'N)  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 {}o>{&X  
    Change in Focus                :       0.000000                           -0.000000 'u4ezwF;  
    ZvGgmLN  
    Worst offenders: `]v[5E  
    Type                      Value      Criterion        Change +x]9+D&  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 `p'Q7m2y/b  
    TSTY   2             0.20000000     0.35349910    -0.19053324 1shBY@mlq  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 Uu7dSU  
    TSTX   2             0.20000000     0.35349910    -0.19053324 1G7b%yPA  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 fZKt%m  
    TSTY   1             0.20000000     0.42678383    -0.11724851 |+U<S~  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 y{9~&r  
    TSTX   1             0.20000000     0.42678383    -0.11724851 a{[+<8=@1  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 iU+nqY'  
    TSTY   3             0.20000000     0.42861670    -0.11541563 AOp/d(vx5i  
    UwY-7Mmo  
    Estimated Performance Changes based upon Root-Sum-Square method: Cv)/7vyB8  
    Nominal MTF                 :     0.54403234 ^Cv^yTj;&  
    Estimated change            :    -0.36299231 *[eL~oN.c  
    Estimated MTF               :     0.18104003 `Y40w#?uW  
    $3X-r jQtW  
    Compensator Statistics: L5IbExjV  
    Change in back focus: U Q@7n1  
    Minimum            :        -0.000000 Zc"B0_&?:7  
    Maximum            :         0.000000 /$"[k2 N  
    Mean               :        -0.000000 ._z 'g_c(  
    Standard Deviation :         0.000000 CnN9!~]"  
    Z.i{i^/#(  
    Monte Carlo Analysis: ~Cc.cce5  
    Number of trials: 20 ?hYqcT[%  
    (x;g/!:  
    Initial Statistics: Normal Distribution 6O2=Ns;J6  
    i v(5&'[p  
      Trial       Criterion        Change 2eQdQwX  
          1     0.42804416    -0.11598818 .7ayQp  
    Change in Focus                :      -0.400171 Lh$dzHq  
          2     0.54384387    -0.00018847 rSP_:}  
    Change in Focus                :       1.018470 9^F2$+T[:  
          3     0.44510003    -0.09893230 $!A:5jech  
    Change in Focus                :      -0.601922 DZ ^1s~  
          4     0.18154684    -0.36248550 rAQF9O[  
    Change in Focus                :       0.920681 I-NN29Sk  
          5     0.28665820    -0.25737414 "()sb?&  
    Change in Focus                :       1.253875 bVr*h2 p  
          6     0.21263372    -0.33139862 !SHj$Jwa'  
    Change in Focus                :      -0.903878 ']o od!  
          7     0.40051424    -0.14351809 qu6DQ@ ~YC  
    Change in Focus                :      -1.354815 vOI[Z0Lq9h  
          8     0.48754161    -0.05649072 %qsvtc`  
    Change in Focus                :       0.215922 !wLg67X$ -  
          9     0.40357468    -0.14045766 [LM^), J?  
    Change in Focus                :       0.281783 smAC,-6 ]~  
         10     0.26315315    -0.28087919 qBk``!|s]  
    Change in Focus                :      -1.048393 fvo<(c#Y#  
         11     0.26120585    -0.28282649 2 4\g bv<  
    Change in Focus                :       1.017611 J#3{S]* v_  
         12     0.24033815    -0.30369419 7q9gngT1LA  
    Change in Focus                :      -0.109292 u3tZ[Y2 c  
         13     0.37164046    -0.17239188 ET^|z  
    Change in Focus                :      -0.692430 mjnUs-`W|  
         14     0.48597489    -0.05805744 Y\/gU8w/  
    Change in Focus                :      -0.662040 ?T: jk4+  
         15     0.21462327    -0.32940907 nw'-`*'rj  
    Change in Focus                :       1.611296 "u' )g&   
         16     0.43378226    -0.11025008 +zOOdSFk.  
    Change in Focus                :      -0.640081 w5~i^x  
         17     0.39321881    -0.15081353 ? S=W&  
    Change in Focus                :       0.914906 {6vEEU  
         18     0.20692530    -0.33710703 ,35&G"JK5  
    Change in Focus                :       0.801607 5a8>g [2U  
         19     0.51374068    -0.03029165 vrl[BPI  
    Change in Focus                :       0.947293 ,WTTJN  
         20     0.38013374    -0.16389860 KAA3iA@>+  
    Change in Focus                :       0.667010 q{4|Kpx@  
    t)1phg4H)  
    Number of traceable Monte Carlo files generated: 20 ~0tdfK0c  
    F#q&(  
    Nominal     0.54403234 f5dR 5G  
    Best        0.54384387    Trial     2 uVU`tDzd:  
    Worst       0.18154684    Trial     4 - HOnB=  
    Mean        0.35770970 Bmr<O !  
    Std Dev     0.11156454 (RF>s.B<  
    Zy]s`aa  
    ij)Cm]4(2  
    Compensator Statistics: +$beo2x6  
    Change in back focus: r:.uBc&_  
    Minimum            :        -1.354815 ?s{C//  
    Maximum            :         1.611296 B1T5f1;uY  
    Mean               :         0.161872 whkJpK(  
    Standard Deviation :         0.869664 w{7 ji}  
    JAb$M{t  
    90% >       0.20977951               nX x=1*X  
    80% >       0.22748071               ;lfWu U%R  
    50% >       0.38667627               *=nO  
    20% >       0.46553746               NtZ6$o<Y  
    10% >       0.50064115                K r3];(w{  
    LdTIR]  
    End of Run. 71iRG*O  
    ua& @GXvZ  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 LDX*<(  
    !]DuZ=  
    ~Yl$I,  
    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 E[S':Q  
    }$)&{d G  
    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                 W?PWJkIw  
    80% >       0.22748071                  ~^7  
    50% >       0.38667627                 @U7Dunu*f  
    20% >       0.46553746                 syMm`/*/G-  
    10% >       0.50064115 }bgo )<i  
    9RcM$[~  
    最后这个数值是MTF值呢，还是MTF的公差？ >Fh#DmQ  
    <,-,?   
    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？？？   ^je528%H  
    >W~=]&7{s4  
    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  : 2>ys2:z  
    90% >       0.20977951                 4u7Cm  
    80% >       0.22748071                 m_(E(_  
    50% >       0.38667627                 OoE9W  
    20% >       0.46553746                 F],TG&>5  
    10% >       0.50064115 kO jEY  
    ....... 1"M"h_4  
    gfx oJihE  
    i>WOYI9  
    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   >'ie!VW@  
    Mode                : Sensitivities D\n>*x  
    Sampling            : 2 <\+Po<)3j  
    Nominal Criterion   : 0.54403234 3e#x)H/dr  
    Test Wavelength     : 0.6328 zI1(F67d`  
    /7.wQeL9  
    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？ D WsCYo  
    I|GV :D  
    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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