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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 dj,lbUL  
    ex|)3|J  
    {c1wJ  
    L^s?EqLXS  
    然后添加了默认公差分析,基本没变 4Im}!q5;:<  
    )i-`AJK-'v  
    '/ueY#eG  
    %74f6\  
    然后运行分析的结果如下: Ex}TDmTu  
    FNl^ lj`Y  
    Analysis of Tolerances "tK3h3/Xv  
    u7p:6W  
    File : E:\光学设计资料\zemax练习\f500.ZMX bx".<q(  
    Title: Jju?v2y`  
    Date : TUE JUN 21 2011 X5tV Xd  
    s, #$o3  
    Units are Millimeters. Oh}@c~7;  
    All changes are computed using linear differences. M9yqJPS}B  
    Z\?!& &  
    Paraxial Focus compensation only. dt>!=<|k  
    wDh&S{N  
    WARNING: Solves should be removed prior to tolerancing. 3fop.%(  
    pAEJ=Te  
    Mnemonics: lnxA/[`a  
    TFRN: Tolerance on curvature in fringes. ~vR<UQz  
    TTHI: Tolerance on thickness. 4x/u$Ixzh=  
    TSDX: Tolerance on surface decentering in x. PO2]x:  
    TSDY: Tolerance on surface decentering in y. 6~k qU4lL  
    TSTX: Tolerance on surface tilt in x (degrees). ."q8 YaW  
    TSTY: Tolerance on surface tilt in y (degrees). 0wETv  
    TIRR: Tolerance on irregularity (fringes). %#]/ ]B/4  
    TIND: Tolerance on Nd index of refraction. /hyCR___  
    TEDX: Tolerance on element decentering in x. =4x-x nA  
    TEDY: Tolerance on element decentering in y. OL&VisJ{75  
    TETX: Tolerance on element tilt in x (degrees). twTRw:.!f  
    TETY: Tolerance on element tilt in y (degrees). jm |zn  
    0`WZ  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. nm,Tng oj  
    ;Y &2G'  
    WARNING: Boundary constraints on compensators will be ignored. AWmJm)   
    TF,a `?c`  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm k .F(*kh  
    Mode                : Sensitivities 495(V(+5  
    Sampling            : 2 lU3Xd_v O  
    Nominal Criterion   : 0.54403234 VqB9^qJ]!  
    Test Wavelength     : 0.6328 gE!`9#..  
    ?Vr~~v"fg8  
    Fg^zz*e  
    Fields: XY Symmetric Angle in degrees "\1V^2kMr  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ~U4;YlQP  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 OoAZ t  
    l_=kW!l  
    Sensitivity Analysis: SYK?5_804  
    RQ51xTOL4]  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| rg+3pX\{  
    Type                      Value      Criterion        Change          Value      Criterion        Change YpbJoHiSH  
    Fringe tolerance on surface 1 tgm(tDL  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 :&D$Q 4  
    Change in Focus                :      -0.000000                            0.000000 i0&] Ig|;  
    Fringe tolerance on surface 2 }Qvoms<k  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 CQ%yki  
    Change in Focus                :       0.000000                            0.000000 SVyJUd_  
    Fringe tolerance on surface 3 v]KI=!Gs  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 @Cd}1OT)  
    Change in Focus                :      -0.000000                            0.000000 :!gzx n  
    Thickness tolerance on surface 1 s}Sxl0  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 GEf[k OQ  
    Change in Focus                :       0.000000                            0.000000 d`Em) 3v  
    Thickness tolerance on surface 2 vro5G')  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 s=|&NlO$  
    Change in Focus                :       0.000000                           -0.000000 \~q cYp  
    Decenter X tolerance on surfaces 1 through 3 i(>v~T,(  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 qS+Ilg  
    Change in Focus                :       0.000000                            0.000000 3H47 vm(`  
    Decenter Y tolerance on surfaces 1 through 3 =R\-mov$  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 /T2f~1R  
    Change in Focus                :       0.000000                            0.000000 pDx}~IB  
    Tilt X tolerance on surfaces 1 through 3 (degrees) [Z?vC  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 A&fh0E (t  
    Change in Focus                :       0.000000                            0.000000 Th//uI+  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) Pi|oO-M  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 6Bm2_B  
    Change in Focus                :       0.000000                            0.000000 6hm6h7$F1  
    Decenter X tolerance on surface 1 KbV%8nx!!  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 6ypqnOTr  
    Change in Focus                :       0.000000                            0.000000 X{riI^(  
    Decenter Y tolerance on surface 1 cM'5m  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 }tT*Ch?u  
    Change in Focus                :       0.000000                            0.000000 *:A )j?(  
    Tilt X tolerance on surface (degrees) 1 QWGFXy,=1  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 "ae55ft//  
    Change in Focus                :       0.000000                            0.000000 %z0@4G q  
    Tilt Y tolerance on surface (degrees) 1 +nslS:(  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 aw:0R=S,>  
    Change in Focus                :       0.000000                            0.000000 $ /(H%f&  
    Decenter X tolerance on surface 2 Qmh*Gh? v  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 KPA5 X]  
    Change in Focus                :       0.000000                            0.000000 YB}_zuZ4&  
    Decenter Y tolerance on surface 2 S.OGLLprp  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 way-Q7  
    Change in Focus                :       0.000000                            0.000000 1P\_3.V{  
    Tilt X tolerance on surface (degrees) 2 DD hc^(  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 {#y HL  
    Change in Focus                :       0.000000                            0.000000 !f\6=Z?>3  
    Tilt Y tolerance on surface (degrees) 2 3,B[%!3d  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 i=<(fq  
    Change in Focus                :       0.000000                            0.000000 T't^pO-`  
    Decenter X tolerance on surface 3 :PaFC{O)*  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 P5P<-T{-c  
    Change in Focus                :       0.000000                            0.000000 jWW2&cBm\  
    Decenter Y tolerance on surface 3 0,;FiOp  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 HnqZ7%jeN  
    Change in Focus                :       0.000000                            0.000000 kB]|4CG{  
    Tilt X tolerance on surface (degrees) 3 afc?a-~Z  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 n{Mj<\kL  
    Change in Focus                :       0.000000                            0.000000 )V}u1C-N  
    Tilt Y tolerance on surface (degrees) 3 vP'R7r2Yx  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 E%-&!%_>D@  
    Change in Focus                :       0.000000                            0.000000 z[ ;{p.W  
    Irregularity of surface 1 in fringes {ersXQ:  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ZdH WSfO)O  
    Change in Focus                :       0.000000                            0.000000 {_/6,22j(V  
    Irregularity of surface 2 in fringes cY>;(x@  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 O'-lBf+<  
    Change in Focus                :       0.000000                            0.000000 <STjB,_s  
    Irregularity of surface 3 in fringes  m|"MJP  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 knBT(x'+  
    Change in Focus                :       0.000000                            0.000000 Z9aDE@A  
    Index tolerance on surface 1 >)pwmIn<  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 6]gs{zG  
    Change in Focus                :       0.000000                            0.000000 a4: PufS  
    Index tolerance on surface 2 ESASsRzk  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 -RH ?FJ  
    Change in Focus                :       0.000000                           -0.000000 a3lo;Cfp  
    |$b4 {  
    Worst offenders: 3nK'yC  
    Type                      Value      Criterion        Change >uJrq""+  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 "3j0)  
    TSTY   2             0.20000000     0.35349910    -0.19053324 up2%QbN(  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 iKS9Xss8  
    TSTX   2             0.20000000     0.35349910    -0.19053324 U0N[~yW(t1  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 %r!#  
    TSTY   1             0.20000000     0.42678383    -0.11724851 H_8@J  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 "| Q&  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ln=zGX.e  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 *,- YWx4  
    TSTY   3             0.20000000     0.42861670    -0.11541563 w pCS]2  
    mc$c!Ax*  
    Estimated Performance Changes based upon Root-Sum-Square method: 329xo03-[  
    Nominal MTF                 :     0.54403234 m#;:%.Rm  
    Estimated change            :    -0.36299231 @e0 Q+t  
    Estimated MTF               :     0.18104003 *,n7&  
    &gEu%s^wR  
    Compensator Statistics: CWN=6(y  
    Change in back focus: w\2[dd  
    Minimum            :        -0.000000 Om1z  
    Maximum            :         0.000000 7e=a D~f  
    Mean               :        -0.000000 wFd*6%  
    Standard Deviation :         0.000000 W>Rv  
     vo(?[[  
    Monte Carlo Analysis: <m6I)}K  
    Number of trials: 20 <?J7Z|  
    G#*!)#M <  
    Initial Statistics: Normal Distribution ntkinbbD  
    ``E;!r="v  
      Trial       Criterion        Change YJ6vyG>%C  
          1     0.42804416    -0.11598818 p.}[!!m P  
    Change in Focus                :      -0.400171 X%F9.<4  
          2     0.54384387    -0.00018847 n[WeN NU  
    Change in Focus                :       1.018470 q,(&2./  
          3     0.44510003    -0.09893230 0,A?*CO  
    Change in Focus                :      -0.601922 bn(Scl#@K  
          4     0.18154684    -0.36248550 Sd\@Q% }o\  
    Change in Focus                :       0.920681 0$_imjZ  
          5     0.28665820    -0.25737414 Q:Ms D.  
    Change in Focus                :       1.253875 }-Ma ~/  
          6     0.21263372    -0.33139862 aKUr":z  
    Change in Focus                :      -0.903878 /&|pXBY$;  
          7     0.40051424    -0.14351809 -*Pt781  
    Change in Focus                :      -1.354815 1*jL2P]D  
          8     0.48754161    -0.05649072 ?^!dLW  
    Change in Focus                :       0.215922 i|O7nB@  
          9     0.40357468    -0.14045766 B*AMo5  
    Change in Focus                :       0.281783 w:LCm `d  
         10     0.26315315    -0.28087919 .5ycO  
    Change in Focus                :      -1.048393 [ O)Zof  
         11     0.26120585    -0.28282649 2Ee1mbZVw8  
    Change in Focus                :       1.017611 $P@cS1sB  
         12     0.24033815    -0.30369419 xq)/QR  
    Change in Focus                :      -0.109292 ,Ex\\p-  
         13     0.37164046    -0.17239188 ^MW%&&,BL  
    Change in Focus                :      -0.692430 Jqj6L993e  
         14     0.48597489    -0.05805744 ? 7EVmF  
    Change in Focus                :      -0.662040 B<&_lG0sS  
         15     0.21462327    -0.32940907 3,5wWT] )  
    Change in Focus                :       1.611296 .:raeDrd  
         16     0.43378226    -0.11025008 -:>#w`H  
    Change in Focus                :      -0.640081 vWovR`  
         17     0.39321881    -0.15081353 Os!22 O  
    Change in Focus                :       0.914906 [Z+,)-ke  
         18     0.20692530    -0.33710703 n6Zx0ad?  
    Change in Focus                :       0.801607 4~Pto f@  
         19     0.51374068    -0.03029165 A(p  
    Change in Focus                :       0.947293 1c"m$)a4  
         20     0.38013374    -0.16389860 (R<4"QbE  
    Change in Focus                :       0.667010 eM"mP&TTL  
    pi}H.iF  
    Number of traceable Monte Carlo files generated: 20 1Qu,]i`  
    UhTr<(@  
    Nominal     0.54403234 `6$b1qv,  
    Best        0.54384387    Trial     2 7qz-RF#s8  
    Worst       0.18154684    Trial     4 P0(~~z&%[  
    Mean        0.35770970 xi\RUAW  
    Std Dev     0.11156454 }gi' %e  
    hNo>)$v!s  
    EI.Pk>ZIm  
    Compensator Statistics: ^ks^9*'|j  
    Change in back focus: an`(?6d  
    Minimum            :        -1.354815 1n( }Q1fa  
    Maximum            :         1.611296 #jx?uS  
    Mean               :         0.161872 DOIWhd5:  
    Standard Deviation :         0.869664 Lp)8SmN  
    y;Ln ao7i  
    90% >       0.20977951               XL=R]IC<.  
    80% >       0.22748071               ;Hb[gvl   
    50% >       0.38667627               U3K<@r  
    20% >       0.46553746               L)'rM-nkFh  
    10% >       0.50064115                mVAm^JK  
    3a}`xCO5  
    End of Run. 3F}KrG  
    z 2VCK@0  
    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 "4hpU]4j  
    gA1in  
    5a!e%jj  
    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 ~+ wamX3  
    6CmFmc,  
    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                 0yC`9g)(  
    80% >       0.22748071                 *Z]WaDw  
    50% >       0.38667627                 #H6g&)Z_  
    20% >       0.46553746                 {ogZT7w}  
    10% >       0.50064115 %L13Jsw  
    CTkN8{2S  
    最后这个数值是MTF值呢,还是MTF的公差? {rvbo1t  
    s9rtXBJP  
    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???   -yAnn  
    CFJjh^ ~=  
    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  : J%\- 1  
    90% >       0.20977951                 3I"NI.>*  
    80% >       0.22748071                 zJ;>.0  
    50% >       0.38667627                 1yBt/U2  
    20% >       0.46553746                 SOp=~z  
    10% >       0.50064115 ~H^'al2PK  
    ....... *;hY.EuoFz  
    8K0X[-hs8  
    D<U 9m3  
    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   [o2w1R\H+x  
    Mode                : Sensitivities d2rL 8jW  
    Sampling            : 2 TUh&d5a9H  
    Nominal Criterion   : 0.54403234 DY9fF4[9a  
    Test Wavelength     : 0.6328 d0(Cn}m"c  
     fb\DiKsW  
    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? |6E .M1  
    CRFCqmevR  
    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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    恩,多多尝试