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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 Pfm_@'8  
    0TmR/uUT  
    Yr w$  
    zfwS  
    然后添加了默认公差分析,基本没变 M/q E2L[y  
    o$[z],RO  
    ?Q-h n:F)  
    @FC"nM  
    然后运行分析的结果如下: n @?4b8"  
    PH*\AZJCl  
    Analysis of Tolerances k6Uc3O  
    'Fs)Rx}\0  
    File : E:\光学设计资料\zemax练习\f500.ZMX cZ(elZ0~  
    Title: {@<J_ A  
    Date : TUE JUN 21 2011 u$D*tqxG  
    N gLU$/y;  
    Units are Millimeters. Iw<jT|y)  
    All changes are computed using linear differences. iSFuT7; %  
    8a_[B~  
    Paraxial Focus compensation only. M.nvB)  
    i~3u>CT  
    WARNING: Solves should be removed prior to tolerancing. Gcb|W&  
    HLBkR>e  
    Mnemonics: 2_ :n  
    TFRN: Tolerance on curvature in fringes. eeHP&1= 7  
    TTHI: Tolerance on thickness. R-Z~V  
    TSDX: Tolerance on surface decentering in x. [! 'op0  
    TSDY: Tolerance on surface decentering in y. UG'bOF4  
    TSTX: Tolerance on surface tilt in x (degrees). qim 'dp:  
    TSTY: Tolerance on surface tilt in y (degrees). =1P6Vk  
    TIRR: Tolerance on irregularity (fringes). dB+N\HBY  
    TIND: Tolerance on Nd index of refraction. >7roe []-|  
    TEDX: Tolerance on element decentering in x.  Ug:\  
    TEDY: Tolerance on element decentering in y. dgDy5{_  
    TETX: Tolerance on element tilt in x (degrees). (YY~{W$w(  
    TETY: Tolerance on element tilt in y (degrees). 0W3i()  
    i 9g>9  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. RJy=pNztm  
    8scc%t7  
    WARNING: Boundary constraints on compensators will be ignored. 'kYwz;gp  
    `+t.!tv!  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Yk42(!  
    Mode                : Sensitivities U`o^mtW.  
    Sampling            : 2 (;%|-{7e-  
    Nominal Criterion   : 0.54403234 :K ~  
    Test Wavelength     : 0.6328  PlYm&  
    -!0_:m3  
    0<PR+Iv*i  
    Fields: XY Symmetric Angle in degrees >|6iR%"f#  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY f30Pi1/h=c  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 BC,.^"fA6  
    +dBz`W D  
    Sensitivity Analysis: Z4){ 7|~a  
    DI`%zLDcY  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| =?h~.lo  
    Type                      Value      Criterion        Change          Value      Criterion        Change QZX~T|Ckv  
    Fringe tolerance on surface 1 tTN?r 8  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 GabYfUkO  
    Change in Focus                :      -0.000000                            0.000000 PyA&ZkX>  
    Fringe tolerance on surface 2 8?*RIA.a  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 k8,?hX:  
    Change in Focus                :       0.000000                            0.000000 l88A=iLgv  
    Fringe tolerance on surface 3 _/S?#   
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 #wc \T  
    Change in Focus                :      -0.000000                            0.000000 9S[XTU  
    Thickness tolerance on surface 1 eZr&x~] -w  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 4t/&.  
    Change in Focus                :       0.000000                            0.000000 }tPk@$  
    Thickness tolerance on surface 2 AF43$6KZP$  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ^E6d`2w-  
    Change in Focus                :       0.000000                           -0.000000 .)|a2d ~F  
    Decenter X tolerance on surfaces 1 through 3 N~g :Wf!  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 |3+m%;X  
    Change in Focus                :       0.000000                            0.000000 Y F:2>w<  
    Decenter Y tolerance on surfaces 1 through 3 [+w3J#K  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 8F)G7 H ,  
    Change in Focus                :       0.000000                            0.000000 tRw@U4=y  
    Tilt X tolerance on surfaces 1 through 3 (degrees) `.#@@5e  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 qzFQEepso  
    Change in Focus                :       0.000000                            0.000000 Omi^>c4G  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) aS|wpm)K>8  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 7Z UiY  
    Change in Focus                :       0.000000                            0.000000 m,')&{Rd  
    Decenter X tolerance on surface 1 CzV(cSS9-  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 [!^-J}^g~\  
    Change in Focus                :       0.000000                            0.000000 >)_ojDO  
    Decenter Y tolerance on surface 1 0)Rw|(Fpo]  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 l7JY]?p  
    Change in Focus                :       0.000000                            0.000000 s7r9,8$  
    Tilt X tolerance on surface (degrees) 1 xt4)Ya  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 $jd<v1"o  
    Change in Focus                :       0.000000                            0.000000 XT,#g-oi  
    Tilt Y tolerance on surface (degrees) 1 fqs]<qi  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 wFlvi=n/  
    Change in Focus                :       0.000000                            0.000000 @c'|Iqy`  
    Decenter X tolerance on surface 2 ?zq+jLyo  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ,}xbAA#  
    Change in Focus                :       0.000000                            0.000000 zH=!*[d8  
    Decenter Y tolerance on surface 2 Fv?=Z-wk  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 (#q<\`  
    Change in Focus                :       0.000000                            0.000000 /,5Z-Z*wq  
    Tilt X tolerance on surface (degrees) 2 NHw x:-RH  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 +*&cz  
    Change in Focus                :       0.000000                            0.000000 i.iio-  
    Tilt Y tolerance on surface (degrees) 2 . BO<  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 +VEU:1Gt  
    Change in Focus                :       0.000000                            0.000000 ">dq0gD  
    Decenter X tolerance on surface 3 ,J mbqOV?!  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 #$\fh;!W  
    Change in Focus                :       0.000000                            0.000000 r^HA aGpC  
    Decenter Y tolerance on surface 3 o@lWBfB*%e  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 /T0nLp`gi  
    Change in Focus                :       0.000000                            0.000000 ;]CVb`d  
    Tilt X tolerance on surface (degrees) 3 >+cVs:  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 %'L;FPxB  
    Change in Focus                :       0.000000                            0.000000 'ul\Q `N3  
    Tilt Y tolerance on surface (degrees) 3 l{P\No  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 DE{h5-g  
    Change in Focus                :       0.000000                            0.000000 0MIUI<;j  
    Irregularity of surface 1 in fringes lS{r=y_0.  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 YpdNX.P,  
    Change in Focus                :       0.000000                            0.000000 ,7|;k2  
    Irregularity of surface 2 in fringes `PI(%N  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 P\~{3U  
    Change in Focus                :       0.000000                            0.000000 W( *V2<$o  
    Irregularity of surface 3 in fringes F.q|x|9j  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 =lr)gj  
    Change in Focus                :       0.000000                            0.000000 \tJFAc  
    Index tolerance on surface 1 6R}j-1 <n  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 yno('1B@  
    Change in Focus                :       0.000000                            0.000000 <o:@dS  
    Index tolerance on surface 2 v.Ogf 5  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872  W^g[L:s  
    Change in Focus                :       0.000000                           -0.000000 4cCF \&yU  
    ^9"KTZc-*  
    Worst offenders: ),@f6](  
    Type                      Value      Criterion        Change US?Rr  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 H*e'Cs/  
    TSTY   2             0.20000000     0.35349910    -0.19053324 "c`xH@D  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 +1{fzb>9_  
    TSTX   2             0.20000000     0.35349910    -0.19053324 (!K+P[g  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 Edt}",s7  
    TSTY   1             0.20000000     0.42678383    -0.11724851 j033%p+Xc  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 )JgC$ <  
    TSTX   1             0.20000000     0.42678383    -0.11724851 yOHXY&  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 oJ;rc{n-  
    TSTY   3             0.20000000     0.42861670    -0.11541563 1]4^V7y  
    ;q#]-^  
    Estimated Performance Changes based upon Root-Sum-Square method: T|'&K:[TJ  
    Nominal MTF                 :     0.54403234 gb-{2p>}  
    Estimated change            :    -0.36299231 gp< =Gmd  
    Estimated MTF               :     0.18104003 *:_~Nn9_R;  
     7 Yv!N  
    Compensator Statistics: ):6 -  
    Change in back focus: ?F$6;N6x  
    Minimum            :        -0.000000 H/cTJ9zz  
    Maximum            :         0.000000 8:g!w:$x  
    Mean               :        -0.000000 V 7<eQ0;m  
    Standard Deviation :         0.000000 oh}^?p  
    r4k nN 2:  
    Monte Carlo Analysis: *{/@uO  
    Number of trials: 20 ,ECAan/@  
    f~\Xg7<  
    Initial Statistics: Normal Distribution e6P[c=m #  
    INNAYQ  
      Trial       Criterion        Change &IQ%\W#aY  
          1     0.42804416    -0.11598818 IcoowZZ   
    Change in Focus                :      -0.400171 Q-('5a19J  
          2     0.54384387    -0.00018847 79ZxqvB\  
    Change in Focus                :       1.018470 h`?k.{})M  
          3     0.44510003    -0.09893230 T_ ^C#>  
    Change in Focus                :      -0.601922 uW[3G  
          4     0.18154684    -0.36248550 , {<Fz%  
    Change in Focus                :       0.920681 Di.;<v#FL  
          5     0.28665820    -0.25737414 qZ\ L  
    Change in Focus                :       1.253875 yq*JdTF  
          6     0.21263372    -0.33139862 5#uO'<2$  
    Change in Focus                :      -0.903878 T\3[F%?  
          7     0.40051424    -0.14351809 k=uZ=tUft*  
    Change in Focus                :      -1.354815 ZgF/;8!~V-  
          8     0.48754161    -0.05649072 BlaJl[Piv  
    Change in Focus                :       0.215922 k^*$^;z  
          9     0.40357468    -0.14045766 YBylyVZ  
    Change in Focus                :       0.281783 {%7<"  
         10     0.26315315    -0.28087919 l{EU_|q  
    Change in Focus                :      -1.048393 VD;j[~/Z  
         11     0.26120585    -0.28282649 ~gt3Omh  
    Change in Focus                :       1.017611 nLd~2qBuv  
         12     0.24033815    -0.30369419 qY}Cg0[@g  
    Change in Focus                :      -0.109292 5c;En6W  
         13     0.37164046    -0.17239188 JD&U}dJ  
    Change in Focus                :      -0.692430 5; f\0<-  
         14     0.48597489    -0.05805744 Yw^ Gti'<  
    Change in Focus                :      -0.662040 0M\NS$u(Y  
         15     0.21462327    -0.32940907 qy9i9$8  
    Change in Focus                :       1.611296 -A;w$j6*  
         16     0.43378226    -0.11025008 gb_X?j%p7  
    Change in Focus                :      -0.640081 JN^bo(kb  
         17     0.39321881    -0.15081353 cHEz{'1m  
    Change in Focus                :       0.914906 Z3`2-r_=  
         18     0.20692530    -0.33710703 \3j)>u,r  
    Change in Focus                :       0.801607 #~e9h9  
         19     0.51374068    -0.03029165 \^s2W:c  
    Change in Focus                :       0.947293 0x#E4v (UA  
         20     0.38013374    -0.16389860 'z](xG<  
    Change in Focus                :       0.667010 1 PIzV:L\  
    7vNtv9  
    Number of traceable Monte Carlo files generated: 20 J0qXtr%h\  
    85C#ja1&  
    Nominal     0.54403234 %yhI;M^  
    Best        0.54384387    Trial     2 u\w2S4c  
    Worst       0.18154684    Trial     4 Lupy:4AD  
    Mean        0.35770970 ||fvKyKW>  
    Std Dev     0.11156454 tQf!|]#J  
    V0T<eH<  
    j!CU  
    Compensator Statistics: Z"N(=B  
    Change in back focus: C2 .W[T  
    Minimum            :        -1.354815 2:~cJk{  
    Maximum            :         1.611296 oVEAlBm^v  
    Mean               :         0.161872 -$m@*L  
    Standard Deviation :         0.869664 %09*l%,;  
    tx)OJY  
    90% >       0.20977951               ,5kvn   
    80% >       0.22748071               PC0HH  
    50% >       0.38667627               N*':U^/t4J  
    20% >       0.46553746               Un\Ubqi0  
    10% >       0.50064115                D{W SKn  
    ?"u'#f_  
    End of Run. T NIst  
    sSy$(%  
    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 uDI}R]8~  
    #AvEH=:  
    'tut4SwC  
    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 gE1|lY$NL  
    &|NZ8:*+#  
    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?
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 nrI"k2oA@  
    80% >       0.22748071                 Y' 2-yB  
    50% >       0.38667627                  !,Qm  
    20% >       0.46553746                 KUlB2Fqi  
    10% >       0.50064115 =obt"K%n  
    5 d>nIKW  
    最后这个数值是MTF值呢,还是MTF的公差? ;,mBT[_ZO  
    H]VsOr  
    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???   8?A@/  
    i[o&z$JO  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : ^G ]KE8  
    90% >       0.20977951                 DR.3 J`?K  
    80% >       0.22748071                 g_3rEvf"4  
    50% >       0.38667627                 )_Z]=5Ds  
    20% >       0.46553746                 BZ]&uD|f  
    10% >       0.50064115 !Ei Ze.K  
    ....... m]+X }|  
    `XQx$I  
    Vvxc8v:  
    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   7v4-hfN  
    Mode                : Sensitivities oT9XJwqnv  
    Sampling            : 2 ^*$WZMMJ1  
    Nominal Criterion   : 0.54403234 1Ud t9$~T  
    Test Wavelength     : 0.6328 jk WBw.(  
    ~|$) 1  
    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? 9I^H)~S  
    (<5'ceF )X  
    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
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    恩,多多尝试