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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 !q=Q~ea  
    g'}`FvADi  
    )bIK0h  
    7&RJDa:a7T  
    然后添加了默认公差分析，基本没变 9(N)MT5F  
    XTi0,e]5{u  
    `%mBu`A  
    ) v[Knp'  
    然后运行分析的结果如下： >jrz;r  
    :m)Rmwn_  
    Analysis of Tolerances V'.eesN  
    qV,$bw  
    File : E:\光学设计资料\zemax练习\f500.ZMX D|Ihe%w-  
    Title: R.2KYhp ,  
    Date : TUE JUN 21 2011  +,F= -  
    \MFWK#W  
    Units are Millimeters. 0oi5]f6g?8  
    All changes are computed using linear differences. :#W>SO  
    }eDX8b8emA  
    Paraxial Focus compensation only. wzQdKlV  
    g]@R'2:1  
    WARNING: Solves should be removed prior to tolerancing. 2=/g~rp*  
    Kz3h]/A.  
    Mnemonics: S] K6qY  
    TFRN: Tolerance on curvature in fringes. ;qVEI/  
    TTHI: Tolerance on thickness. vVAZSR#  
    TSDX: Tolerance on surface decentering in x. wJeqa  
    TSDY: Tolerance on surface decentering in y. {HRxyAI!  
    TSTX: Tolerance on surface tilt in x (degrees). G5QgnxwP2  
    TSTY: Tolerance on surface tilt in y (degrees). C_^R_  
    TIRR: Tolerance on irregularity (fringes). ".Deu|>  
    TIND: Tolerance on Nd index of refraction. eFXi )tl  
    TEDX: Tolerance on element decentering in x. |H+k?C-w  
    TEDY: Tolerance on element decentering in y. k+Ma_H`  
    TETX: Tolerance on element tilt in x (degrees). C1P t3  
    TETY: Tolerance on element tilt in y (degrees). s!o<Pd yJK  
    Dpp52UnT E  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. |Qt`p@W  
    "za*$DU  
    WARNING: Boundary constraints on compensators will be ignored. _"w!KNX>(~  
    >gi{x|/  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm C#?d=x  
    Mode                : Sensitivities _KkVI7a  
    Sampling            : 2 h'YcNkM 2>  
    Nominal Criterion   : 0.54403234 9 K /  
    Test Wavelength     : 0.6328 %`T^qh_dE  
    J*lYH]s  
    c"sw@<HG  
    Fields: XY Symmetric Angle in degrees Ff#N|L'9_  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY n%ArA])_&  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 7jg(j~tQ  
    p2NB~t7Z  
    Sensitivity Analysis: Y)j,(9  
    8s5ru)  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| yY g&'3  
    Type                      Value      Criterion        Change          Value      Criterion        Change ]MA)=' ~  
    Fringe tolerance on surface 1 TcKKI  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 g`8 mh&u%  
    Change in Focus                :      -0.000000                            0.000000 x]J-q5  
    Fringe tolerance on surface 2 ohtn^o;C}  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 1yRd10  
    Change in Focus                :       0.000000                            0.000000 ^nm!NL{z^  
    Fringe tolerance on surface 3 Z%n.:I<%ZV  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 LYq2A,wm$  
    Change in Focus                :      -0.000000                            0.000000 "KT nX#<0  
    Thickness tolerance on surface 1 3]]6z K^i  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 UCj#t!Mw  
    Change in Focus                :       0.000000                            0.000000 \utH*;J|x  
    Thickness tolerance on surface 2 k#r7&Y  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 p*&LEjaVM4  
    Change in Focus                :       0.000000                           -0.000000 3{L vKe  
    Decenter X tolerance on surfaces 1 through 3 /G{3p&9  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 [Z G j7  
    Change in Focus                :       0.000000                            0.000000 x2&! PpM  
    Decenter Y tolerance on surfaces 1 through 3 [c!vsh]^  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ZG[0rvW  
    Change in Focus                :       0.000000                            0.000000 fu "z%h]   
    Tilt X tolerance on surfaces 1 through 3 (degrees) @k #y-/~?  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ]<_!@J6k  
    Change in Focus                :       0.000000                            0.000000  p|8Fl  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) Z!i'Tbfn  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ?'#;Y"RT  
    Change in Focus                :       0.000000                            0.000000 J&Qy$itqg  
    Decenter X tolerance on surface 1 d\Z4?@T<5  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ?# c@Ag %  
    Change in Focus                :       0.000000                            0.000000 ~t3?er& R  
    Decenter Y tolerance on surface 1 3Co>3d_  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ]~M {@h!<  
    Change in Focus                :       0.000000                            0.000000 _,?HrL9  
    Tilt X tolerance on surface (degrees) 1 0m!ZJHe  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 b2f2WY |z>  
    Change in Focus                :       0.000000                            0.000000 n$0)gKN7  
    Tilt Y tolerance on surface (degrees) 1 U"kK]Stk<  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 qq%_ksQ  
    Change in Focus                :       0.000000                            0.000000 xs`gN  
    Decenter X tolerance on surface 2 %t|2GIu  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 XBt0Ez  
    Change in Focus                :       0.000000                            0.000000 vCo}-b-j  
    Decenter Y tolerance on surface 2 juYt =  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ] "vdC}  
    Change in Focus                :       0.000000                            0.000000 0 S8{VZpy  
    Tilt X tolerance on surface (degrees) 2 |wn LxI  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 (y4Eq*n%!  
    Change in Focus                :       0.000000                            0.000000 &'2l_b  
    Tilt Y tolerance on surface (degrees) 2 , ZW.P`  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 pG=zGx4  
    Change in Focus                :       0.000000                            0.000000 2m}]z.w#  
    Decenter X tolerance on surface 3 ! m5\w>  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 *YOnX7*Km  
    Change in Focus                :       0.000000                            0.000000 ^n5QK HD  
    Decenter Y tolerance on surface 3 /!8:/7r+W  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 evk <<zi  
    Change in Focus                :       0.000000                            0.000000 WW@"75t  
    Tilt X tolerance on surface (degrees) 3 s_?* R  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 xx#Ef@bS  
    Change in Focus                :       0.000000                            0.000000 V"p*Jd"w  
    Tilt Y tolerance on surface (degrees) 3 ]>!_OCe&  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 b|'LtL$Y  
    Change in Focus                :       0.000000                            0.000000 52Ffle8  
    Irregularity of surface 1 in fringes OU=IV;V{  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 n!orM5=:O  
    Change in Focus                :       0.000000                            0.000000 >%A=b}VS  
    Irregularity of surface 2 in fringes C>-"*Lt  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Ps,w(k{d  
    Change in Focus                :       0.000000                            0.000000 ViONG]F  
    Irregularity of surface 3 in fringes P9~kN|  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ` u)V 9{  
    Change in Focus                :       0.000000                            0.000000 Ok"wec+,  
    Index tolerance on surface 1 cl8Mv  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 X,Q(W0-6$u  
    Change in Focus                :       0.000000                            0.000000 2!`Z3>Oa  
    Index tolerance on surface 2 sA j$U^Gp  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 (VR nv  
    Change in Focus                :       0.000000                           -0.000000 v3]M;Y\  
    E_*T0&P.P  
    Worst offenders: y!Eh /KD  
    Type                      Value      Criterion        Change 9$t@Gmn  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 A#\X-8/  
    TSTY   2             0.20000000     0.35349910    -0.19053324 @XJv9aq  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 of<OOh%3  
    TSTX   2             0.20000000     0.35349910    -0.19053324 `Q[$R&\  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 4K,&Q/Vdd7  
    TSTY   1             0.20000000     0.42678383    -0.11724851 8 F 1ga15  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 V6o,}o&-  
    TSTX   1             0.20000000     0.42678383    -0.11724851 {<Zqw]  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 oOw"k*,h:S  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ttxOP  
    WV5R$IqY  
    Estimated Performance Changes based upon Root-Sum-Square method: |MGw$  
    Nominal MTF                 :     0.54403234 [:Y^0[2  
    Estimated change            :    -0.36299231 Yi,um-%  
    Estimated MTF               :     0.18104003 DenCD9 f  
    FL}8h/  
    Compensator Statistics: 06r cW `  
    Change in back focus: @ZWKs  
    Minimum            :        -0.000000 Z!6G (zz:>  
    Maximum            :         0.000000 NIGFu{S  
    Mean               :        -0.000000 l$NEx0Dffz  
    Standard Deviation :         0.000000 Z H*?~ #  
    jk?(W2c#{  
    Monte Carlo Analysis: n$K_KU v  
    Number of trials: 20 Ro69woU  
    PI?[  
    Initial Statistics: Normal Distribution -. G0k*[d  
    gqamGLK  
      Trial       Criterion        Change ?z.`rD$}(n  
          1     0.42804416    -0.11598818 }s9J+m  
    Change in Focus                :      -0.400171 LNW p$"  
          2     0.54384387    -0.00018847 (nG  
    Change in Focus                :       1.018470 \wP$"Z}j  
          3     0.44510003    -0.09893230 -8: @xG2  
    Change in Focus                :      -0.601922 jLU)S)  
          4     0.18154684    -0.36248550 3Hr%G4  
    Change in Focus                :       0.920681 t `oP;  
          5     0.28665820    -0.25737414 auU{I y   
    Change in Focus                :       1.253875 nfEk,(:  
          6     0.21263372    -0.33139862 s4\2lBU?  
    Change in Focus                :      -0.903878 bL<cg tz7)  
          7     0.40051424    -0.14351809 W\.(~-(So  
    Change in Focus                :      -1.354815 /6fsh7 \  
          8     0.48754161    -0.05649072 2TO1i0  
    Change in Focus                :       0.215922 scmb DaOn  
          9     0.40357468    -0.14045766 ?M);wBe(  
    Change in Focus                :       0.281783 *%.*vPJ  
         10     0.26315315    -0.28087919 _;9)^})$  
    Change in Focus                :      -1.048393 +Y+kx"8  
         11     0.26120585    -0.28282649 >jm9x1+C  
    Change in Focus                :       1.017611 F$v G=3  
         12     0.24033815    -0.30369419 7Udr~ 0_)  
    Change in Focus                :      -0.109292 >ZT3gp?E  
         13     0.37164046    -0.17239188 TOs|f8ay  
    Change in Focus                :      -0.692430 ~EymD *  
         14     0.48597489    -0.05805744 Cq=c'(cX  
    Change in Focus                :      -0.662040 #=2~MXa@z7  
         15     0.21462327    -0.32940907 d4U_Wu&  
    Change in Focus                :       1.611296 4?cg6WJ'6  
         16     0.43378226    -0.11025008 @,hvXl-G*  
    Change in Focus                :      -0.640081 \_oHuw  
         17     0.39321881    -0.15081353 -ydT%x  
    Change in Focus                :       0.914906 V3S`8VI  
         18     0.20692530    -0.33710703 Gvwel!6  
    Change in Focus                :       0.801607 -3C~}~$>`  
         19     0.51374068    -0.03029165 k K(,FB  
    Change in Focus                :       0.947293 @W8RAS~  
         20     0.38013374    -0.16389860 kE1u-EA  
    Change in Focus                :       0.667010  _~r>C  
    q0o6%c:gW  
    Number of traceable Monte Carlo files generated: 20 *@< jJP4  
    (Qnn  
    Nominal     0.54403234 V*)gJg  
    Best        0.54384387    Trial     2 _?8T'?-1  
    Worst       0.18154684    Trial     4 UaB!,vs3st  
    Mean        0.35770970 U-(d~]$  
    Std Dev     0.11156454 on~rrSK  
    d] {^  
    3:r;(IaX  
    Compensator Statistics: %~@}wHMB  
    Change in back focus: 3Dy.mtP  
    Minimum            :        -1.354815 `R\0g\  
    Maximum            :         1.611296 5_PD ?lg  
    Mean               :         0.161872 z`W$/tw"  
    Standard Deviation :         0.869664 z;LntQZp-  
    !.!Ervi!N  
    90% >       0.20977951               P+JYs  
    80% >       0.22748071               ]Kd:ZmJ  
    50% >       0.38667627               #qzozQ4  
    20% >       0.46553746               !,]_tw>R  
    10% >       0.50064115                {Q0"uE)-.  
    crUXpD  
    End of Run. Tg[+K+b  
    %NKf@If)  
    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 N:0mjHG  
    z5?xmffB  
    N. uw2Y%  
    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 {?82>q5F  
    J::dY~@  
    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                  ,_HVPE  
    80% >       0.22748071                 .:E%cL +h  
    50% >       0.38667627                 S'q (Qo  
    20% >       0.46553746                 ? 3Td>x  
    10% >       0.50064115 d(<[$ 3.  
    sRqFsj}3e  
    最后这个数值是MTF值呢，还是MTF的公差？ JS} iNS'X  
    !CUrpr/*  
    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？？？   G7 b>r  
    YFeF(k!!n  
    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  : c{4Y?SSx  
    90% >       0.20977951                 HFlMx  
    80% >       0.22748071                 `?P)RS30  
    50% >       0.38667627                 4}&$s  
    20% >       0.46553746                 /fh[_!qN  
    10% >       0.50064115 {_[\k^98>  
    ....... 5=@q!8a*  
    ,Kl6vw8Htg  
    ;fi H=_{us  
    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   4C]>{osv  
    Mode                : Sensitivities crvq]J5  
    Sampling            : 2 Cr&,*lUo  
    Nominal Criterion   : 0.54403234 /u&{=nU  
    Test Wavelength     : 0.6328 K."%PdC  
    25R6>CXsi  
    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？ <h"07.y  
    Yt3 +o<  
    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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