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    [讨论]公差分析结果的疑问 [复制链接]

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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 {^v50d  
    e_e|t>nQ  
    ax$0J|}7  
    iJAW| dw}  
    然后添加了默认公差分析,基本没变 U i;o/Z3  
    DvGtO)5._  
    {=kA8U  
    =+u$ZZ0+]o  
    然后运行分析的结果如下: 6YN4]  
    CUoMB r  
    Analysis of Tolerances w% M0Mu  
    ^#%[  
    File : E:\光学设计资料\zemax练习\f500.ZMX )pJzw-m"  
    Title: SU:Cm: $  
    Date : TUE JUN 21 2011 |h;MA,qva  
    ='f>p+*c%  
    Units are Millimeters. G[jCmkK  
    All changes are computed using linear differences. 6@ + >UZr\  
    tcs Z! #  
    Paraxial Focus compensation only. }=++Lr4*  
    q\ ?6-?Mr  
    WARNING: Solves should be removed prior to tolerancing. jtA Yp3M-$  
    15870xS  
    Mnemonics: Z)HQlm  
    TFRN: Tolerance on curvature in fringes. aJ2-BRn  
    TTHI: Tolerance on thickness. #3.\}d)  
    TSDX: Tolerance on surface decentering in x. tTY(I1  
    TSDY: Tolerance on surface decentering in y. dJ$}]   
    TSTX: Tolerance on surface tilt in x (degrees). UOq$88sr  
    TSTY: Tolerance on surface tilt in y (degrees). g{&ux k);  
    TIRR: Tolerance on irregularity (fringes). 5dhRuc  
    TIND: Tolerance on Nd index of refraction. ^<< Wqmx  
    TEDX: Tolerance on element decentering in x. ";Lpf]<  
    TEDY: Tolerance on element decentering in y. Qv8Z64#  
    TETX: Tolerance on element tilt in x (degrees). K@h v[4  
    TETY: Tolerance on element tilt in y (degrees). upWq=_  
    =U?"#   
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. FG'1;x!  
    yNO5h]o  
    WARNING: Boundary constraints on compensators will be ignored. Yx,  
    e-Eoe_k  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm @o8\`G  
    Mode                : Sensitivities D:f0W v  
    Sampling            : 2 a7ZPV1k  
    Nominal Criterion   : 0.54403234 :.@gd7T  
    Test Wavelength     : 0.6328 W8\K_M}  
    {BgGG@e  
    R# gip  
    Fields: XY Symmetric Angle in degrees #[2]B8NZ  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY o-R;EbL  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 -\LB>\;qn  
    CfAX,f"ZP  
    Sensitivity Analysis: 2@=JIMtc  
    WJ=^r@Sf  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ZNzye1JSm  
    Type                      Value      Criterion        Change          Value      Criterion        Change \4mw>8wA  
    Fringe tolerance on surface 1 <s  $~h  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 c 8#A^q}  
    Change in Focus                :      -0.000000                            0.000000 " GgK,d}%  
    Fringe tolerance on surface 2 }9jy)gF*e  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Ig]Gg/1G  
    Change in Focus                :       0.000000                            0.000000 nx=Zl:Q}  
    Fringe tolerance on surface 3 w$pBACX  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 1S<V,9(  
    Change in Focus                :      -0.000000                            0.000000 T0v;8E e  
    Thickness tolerance on surface 1 JhIgq W2  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 oC"c%e8  
    Change in Focus                :       0.000000                            0.000000 (`xhh  
    Thickness tolerance on surface 2 Ly lw('zZ  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 kpcIU7|e  
    Change in Focus                :       0.000000                           -0.000000 5|";L&`  
    Decenter X tolerance on surfaces 1 through 3 2?#IwT'  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 90&ld:97  
    Change in Focus                :       0.000000                            0.000000 g6+}'MN:5  
    Decenter Y tolerance on surfaces 1 through 3 8I3"68c_a  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 36e !je  
    Change in Focus                :       0.000000                            0.000000 B$sB1M0q  
    Tilt X tolerance on surfaces 1 through 3 (degrees) d0eMDIm3R\  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ?u"MsnCXYn  
    Change in Focus                :       0.000000                            0.000000 k~h'`(  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) iZ yhj%#  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Tj$D:xKf)  
    Change in Focus                :       0.000000                            0.000000 ayTEQS  
    Decenter X tolerance on surface 1 9K-=2hvv  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 @.6l^"L  
    Change in Focus                :       0.000000                            0.000000 B0T[[%~3M  
    Decenter Y tolerance on surface 1 [/.o>R#J(  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 -Xb]=Yf-  
    Change in Focus                :       0.000000                            0.000000 89?$xm_m  
    Tilt X tolerance on surface (degrees) 1 u|z B\zd  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 p(fYpD  
    Change in Focus                :       0.000000                            0.000000 Y<0 [_+(  
    Tilt Y tolerance on surface (degrees) 1 CXwDG_e  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 sluR @[l  
    Change in Focus                :       0.000000                            0.000000 3iMh)YH5b  
    Decenter X tolerance on surface 2 fH-V!QYGF  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 n.Iu|,?q  
    Change in Focus                :       0.000000                            0.000000 J39,x=8LL  
    Decenter Y tolerance on surface 2 *_ {w0U)  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 VC,wQb1J/  
    Change in Focus                :       0.000000                            0.000000 C(qqGK{  
    Tilt X tolerance on surface (degrees) 2 ~_OtbNj#  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 &_n~#Mex  
    Change in Focus                :       0.000000                            0.000000 <iDqt5)N  
    Tilt Y tolerance on surface (degrees) 2 4RTuy+ M  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 $$_aHkI j  
    Change in Focus                :       0.000000                            0.000000 gh>'O/9  
    Decenter X tolerance on surface 3 A6v<+`?  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 794V(;sW,  
    Change in Focus                :       0.000000                            0.000000 r PWn  
    Decenter Y tolerance on surface 3 {L^b['h@  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 fS+Ga1CsH  
    Change in Focus                :       0.000000                            0.000000 Op%}.9ed  
    Tilt X tolerance on surface (degrees) 3 {fW(e?8)  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 "$#X[ .  
    Change in Focus                :       0.000000                            0.000000 !l-^JPb  
    Tilt Y tolerance on surface (degrees) 3 W=fs"<  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 JFf*v6:,  
    Change in Focus                :       0.000000                            0.000000 ;dgxeP;mp  
    Irregularity of surface 1 in fringes c~bi ~ f  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 sJu^deX  
    Change in Focus                :       0.000000                            0.000000 / V}>v  
    Irregularity of surface 2 in fringes ^o^[p %  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 O CIWQ/ P  
    Change in Focus                :       0.000000                            0.000000  JsAl;w  
    Irregularity of surface 3 in fringes huVw+vAA  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 frV *+  
    Change in Focus                :       0.000000                            0.000000 $J}d6%   
    Index tolerance on surface 1 HF>Gf2- C  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 "e4;xU-  
    Change in Focus                :       0.000000                            0.000000 (T+fO}0  
    Index tolerance on surface 2 ~H"Q5Hr   
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 e%. Xya#\  
    Change in Focus                :       0.000000                           -0.000000 ?\[2Po]n  
    ti$d.Kc(  
    Worst offenders: 0Yk@O) x  
    Type                      Value      Criterion        Change aD)XxXwozm  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 -ZwQL="t  
    TSTY   2             0.20000000     0.35349910    -0.19053324 {!h|(xqN+  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 evOy Tvc  
    TSTX   2             0.20000000     0.35349910    -0.19053324 P6q`i<  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 CFdR4vuEI  
    TSTY   1             0.20000000     0.42678383    -0.11724851 G=?2{c}U  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 {v{qPYNyh  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ]XX9.Xh=-  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 =[{YI2S  
    TSTY   3             0.20000000     0.42861670    -0.11541563 /Xa_Xg7  
    e`gOc*  
    Estimated Performance Changes based upon Root-Sum-Square method: S ykblP37  
    Nominal MTF                 :     0.54403234 )c~1s  
    Estimated change            :    -0.36299231 rz/^_dV  
    Estimated MTF               :     0.18104003 a|aRUxa0"  
    R1$O)A}k  
    Compensator Statistics: F-K=Ot j  
    Change in back focus: :6R0=oz  
    Minimum            :        -0.000000 2ZHeOKJ-  
    Maximum            :         0.000000 Bc1[^{`bq^  
    Mean               :        -0.000000 %g1{nGah  
    Standard Deviation :         0.000000 P=v 0|Y*q|  
    I{>U7i 5  
    Monte Carlo Analysis: (Ic{C5'  
    Number of trials: 20 =~;SUO  
    $@]tTz;b  
    Initial Statistics: Normal Distribution  cTpmklq  
    'nH/Z 84  
      Trial       Criterion        Change +bC-_xGuh  
          1     0.42804416    -0.11598818 xRu m q  
    Change in Focus                :      -0.400171 =apcMW(zn  
          2     0.54384387    -0.00018847 g-B~" tp  
    Change in Focus                :       1.018470 % H"A%  
          3     0.44510003    -0.09893230 !YUMAp/  
    Change in Focus                :      -0.601922 ERSo&8  
          4     0.18154684    -0.36248550 :W]IJ mI\  
    Change in Focus                :       0.920681 )na 8a!  
          5     0.28665820    -0.25737414 0XwDk$l<  
    Change in Focus                :       1.253875 'C=8.P?  
          6     0.21263372    -0.33139862 `<R;^qCt  
    Change in Focus                :      -0.903878 jET$wKw%  
          7     0.40051424    -0.14351809 "r@f&Ssxb  
    Change in Focus                :      -1.354815 ];@"-H  
          8     0.48754161    -0.05649072 ~pM\]OC  
    Change in Focus                :       0.215922 f n]rMH4>  
          9     0.40357468    -0.14045766 Z.9 ?u;  
    Change in Focus                :       0.281783 t{)Z$ )'  
         10     0.26315315    -0.28087919 w7n6@"q  
    Change in Focus                :      -1.048393 j9)WInYc:  
         11     0.26120585    -0.28282649 %3v:c|r  
    Change in Focus                :       1.017611 $|0_[~0-n  
         12     0.24033815    -0.30369419 G01J1Ll}  
    Change in Focus                :      -0.109292 3&*_5<t\X  
         13     0.37164046    -0.17239188 OC)~psQK  
    Change in Focus                :      -0.692430 OGmOk>_  
         14     0.48597489    -0.05805744 <hG=0Zcr  
    Change in Focus                :      -0.662040 2^-Z17Z}  
         15     0.21462327    -0.32940907 7D5;lM[_  
    Change in Focus                :       1.611296 +(>!nsf  
         16     0.43378226    -0.11025008 j@OGl&'^-  
    Change in Focus                :      -0.640081 hD OEJ  
         17     0.39321881    -0.15081353 k+*DPo@)  
    Change in Focus                :       0.914906 &zVF!xNy&  
         18     0.20692530    -0.33710703 ( e> .hfrs  
    Change in Focus                :       0.801607 Dx<">4   
         19     0.51374068    -0.03029165 UzLe#3MU  
    Change in Focus                :       0.947293 We^! (G  
         20     0.38013374    -0.16389860 Y yI4T/0s_  
    Change in Focus                :       0.667010 ^1d"Rqtv  
    D9OI ",h  
    Number of traceable Monte Carlo files generated: 20 T<!&6,N A  
    I]S8:w![  
    Nominal     0.54403234 Q/e$Ttt4J  
    Best        0.54384387    Trial     2 Z1V%pg>]*  
    Worst       0.18154684    Trial     4 ^:JZ.r  
    Mean        0.35770970 ~N</;{}fL4  
    Std Dev     0.11156454 )ESF)aKMiz  
    YXD6GJWo  
    m%8idjnG  
    Compensator Statistics: k M/cD`  
    Change in back focus: _)4YxmK%  
    Minimum            :        -1.354815 *0 y|0J+ 0  
    Maximum            :         1.611296 @S3G>i  
    Mean               :         0.161872 x50,4J%J'r  
    Standard Deviation :         0.869664 d1=kHU4_9  
    E1,Sr?'  
    90% >       0.20977951               f< A@D"m/  
    80% >       0.22748071               ?sb Ob  
    50% >       0.38667627               idL6*%M  
    20% >       0.46553746               >eHSbQu/Bu  
    10% >       0.50064115                D;@*  
    }*+?1kv  
    End of Run. (h8M  
    5w:   
    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 oH/6  
    a<CN2e_Z  
    E;l|I A/7  
    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 -7_`6U2"  
    x"kc:F  
    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                 5IeF |#g  
    80% >       0.22748071                 Tjo K]]  
    50% >       0.38667627                 }V.Wp6"S   
    20% >       0.46553746                 4&r+K`C0  
    10% >       0.50064115 Kg0Vbzvb  
    V|.3Z\(  
    最后这个数值是MTF值呢,还是MTF的公差? H\A!oB,sw  
    HC,YmO:df"  
    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???   ODn6%fp%  
    y7#$:+jQv  
    怎么没人啊,大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : 2UY0:y  e  
    90% >       0.20977951                 |M|'S~z  
    80% >       0.22748071                 b u%p,u!  
    50% >       0.38667627                 CBx1.xL  
    20% >       0.46553746                 ]Po9a4w#  
    10% >       0.50064115 SeAokz>  
    ....... 5)4*J.  
    \UFno$;mA  
    wVk2Fr(  
    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   & Sy0Of  
    Mode                : Sensitivities ?KpHvf'  
    Sampling            : 2  X>OO4SV  
    Nominal Criterion   : 0.54403234 AbUPJF"F  
    Test Wavelength     : 0.6328 9F)v=  
    K^tM$l\  
    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? &W fs6g  
    T+NEw8C?/  
    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?
    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