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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 t Q.%f:|  
    JM53sx4&  
    Ql,WKoj*  
    jY ;Hdb''  
    然后添加了默认公差分析，基本没变 n 8FIxl&u  
    iT+t  
    (^]3l%Ed  
    ucJ8l(?Qc  
    然后运行分析的结果如下： l-SVI9|<0  
    di<g"8  
    Analysis of Tolerances gb}ov* *  
    A[^k4 >  
    File : E:\光学设计资料\zemax练习\f500.ZMX Ty*+?#`  
    Title: wBEBj7(y  
    Date : TUE JUN 21 2011 a;&0u>  
    Vw`%|x"Xz  
    Units are Millimeters. !P6?nS  
    All changes are computed using linear differences. zXx A"  
    Ix0#eoj  
    Paraxial Focus compensation only. IU"8.(;o  
    PH?<)Wj9i  
    WARNING: Solves should be removed prior to tolerancing. C\0,D9  
    0QEcJ]Qb8  
    Mnemonics: v7@ *dg  
    TFRN: Tolerance on curvature in fringes. <Rz[G+0S=  
    TTHI: Tolerance on thickness. .73sY5hdTN  
    TSDX: Tolerance on surface decentering in x. sBNqg~HwB?  
    TSDY: Tolerance on surface decentering in y. u=0161g  
    TSTX: Tolerance on surface tilt in x (degrees). "po;[ Ia2  
    TSTY: Tolerance on surface tilt in y (degrees). msOE#QL6a  
    TIRR: Tolerance on irregularity (fringes). )[=C@U  
    TIND: Tolerance on Nd index of refraction. m`4N1egCt  
    TEDX: Tolerance on element decentering in x. gmOP8.g  
    TEDY: Tolerance on element decentering in y. V Y@`)  
    TETX: Tolerance on element tilt in x (degrees). iZ( Jw Y  
    TETY: Tolerance on element tilt in y (degrees). m,F4N$  
    d-I=xpB  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 1b@]^Ue  
    V! .I>  
    WARNING: Boundary constraints on compensators will be ignored. WGUd@lC~  
    <co:z<^lqu  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm UAC"jy1D  
    Mode                : Sensitivities v}@Uc-(  
    Sampling            : 2 ^vI`#}?  
    Nominal Criterion   : 0.54403234 CH6;jo]  
    Test Wavelength     : 0.6328 Z[kVVE9b?  
    w(Q{;RNM;  
    "~"=e  
    Fields: XY Symmetric Angle in degrees -r[O_[g w  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY V7k!;0u v  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 `a@YbuLd  
    ; Ji3|=4u  
    Sensitivity Analysis: 9CZ EP0i7  
    ] B>.}  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 880T'5}S :  
    Type                      Value      Criterion        Change          Value      Criterion        Change i,l$1g-i  
    Fringe tolerance on surface 1 \{o<-S;h  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 2HDWlUTNVO  
    Change in Focus                :      -0.000000                            0.000000 hh-sm8  
    Fringe tolerance on surface 2 =r~ExW}+  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 pc;`Fz/`7  
    Change in Focus                :       0.000000                            0.000000 y!~ }7=  
    Fringe tolerance on surface 3 !@FzP@  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 0 l+Jq  
    Change in Focus                :      -0.000000                            0.000000 =@d->d  
    Thickness tolerance on surface 1 4^ZbT  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Ag;Ybk[  
    Change in Focus                :       0.000000                            0.000000 *~zB{  
    Thickness tolerance on surface 2 n_6#Df*  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 -E.fo._L5  
    Change in Focus                :       0.000000                           -0.000000 4?c0rC<  
    Decenter X tolerance on surfaces 1 through 3 N <M6~  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 O*>`md?MH  
    Change in Focus                :       0.000000                            0.000000 4!-/m7%eF  
    Decenter Y tolerance on surfaces 1 through 3 u/J1Z>0  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 R 3*{"!O  
    Change in Focus                :       0.000000                            0.000000 .cr<.Ov  
    Tilt X tolerance on surfaces 1 through 3 (degrees) j 5bHzcv  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 :,.HJ[Vg&  
    Change in Focus                :       0.000000                            0.000000 HcGbe37Xq  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) D=M'g}l  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 _CizU0S  
    Change in Focus                :       0.000000                            0.000000 _lfS"ae  
    Decenter X tolerance on surface 1 qCm8R@  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ^$y`Q@-9  
    Change in Focus                :       0.000000                            0.000000 D&D-E~b^  
    Decenter Y tolerance on surface 1 }-p-(  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 UryHte  
    Change in Focus                :       0.000000                            0.000000 +^[SXI^JaJ  
    Tilt X tolerance on surface (degrees) 1 CJ6vS  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 :DFtH13qO  
    Change in Focus                :       0.000000                            0.000000 0hq\{pw_y*  
    Tilt Y tolerance on surface (degrees) 1 D 75;Y;E  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 w=[ITQ|W%  
    Change in Focus                :       0.000000                            0.000000 ESuP ZB  
    Decenter X tolerance on surface 2 Sre:l'.  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 jOL=vG  
    Change in Focus                :       0.000000                            0.000000 _Bhd@S!  
    Decenter Y tolerance on surface 2 nQG<OVRClS  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 jV#1d8qm  
    Change in Focus                :       0.000000                            0.000000 ONLhQJCb  
    Tilt X tolerance on surface (degrees) 2 )ZpMB  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 BfQ#5  
    Change in Focus                :       0.000000                            0.000000 v 1 f^gde  
    Tilt Y tolerance on surface (degrees) 2 srH.$Y;~  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 X @X`,/{X  
    Change in Focus                :       0.000000                            0.000000 #,OiZQJC  
    Decenter X tolerance on surface 3 8x9;3{R   
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Rd|^C$6  
    Change in Focus                :       0.000000                            0.000000 VA%4ssy  
    Decenter Y tolerance on surface 3 1:4u]$@E  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 avUdv V-  
    Change in Focus                :       0.000000                            0.000000 #2%8@?_-M  
    Tilt X tolerance on surface (degrees) 3 ^vTp.7o~5  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563  xC2y/ ?  
    Change in Focus                :       0.000000                            0.000000 N'?#g`*KW  
    Tilt Y tolerance on surface (degrees) 3 Q1x=@lXR  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 vh^?M#\  
    Change in Focus                :       0.000000                            0.000000 y>ePCDR3  
    Irregularity of surface 1 in fringes %\!@$]3q  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 KnUVR!H|  
    Change in Focus                :       0.000000                            0.000000 c`7dNx  
    Irregularity of surface 2 in fringes H2CpZK'  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 aQ0pYk~(  
    Change in Focus                :       0.000000                            0.000000 *Q;?p hr  
    Irregularity of surface 3 in fringes =an 0PN  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 v+'*.Iv:  
    Change in Focus                :       0.000000                            0.000000 G1wJ]ar  
    Index tolerance on surface 1 ;t4YI7E*  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 I~,bZA  
    Change in Focus                :       0.000000                            0.000000 )%HIC@MM6  
    Index tolerance on surface 2 eqqnR.0  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 -6# _t  
    Change in Focus                :       0.000000                           -0.000000 Nu+DVIM  
    mnU8i=v0 A  
    Worst offenders: t_\&LMD  
    Type                      Value      Criterion        Change RJdijj  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 -a7BVEFts  
    TSTY   2             0.20000000     0.35349910    -0.19053324 {N@Pk[!  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 cuL/y$+EY  
    TSTX   2             0.20000000     0.35349910    -0.19053324 @su!9]o  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 S]Aaf-X_  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Fm+V_.H/;  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 $5>m\wrl  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Qki? >j"  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ,Uy;jk  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ?h,.1Tb  
    qpq(<  
    Estimated Performance Changes based upon Root-Sum-Square method: |Gr@Mi5  
    Nominal MTF                 :     0.54403234 aTs9lr:  
    Estimated change            :    -0.36299231 6Ia[`x uL  
    Estimated MTF               :     0.18104003 Q<(aU{  
    Jv!f6*&<  
    Compensator Statistics: :c(#03w*C  
    Change in back focus: j_S3<wEJ  
    Minimum            :        -0.000000 8tzL.P^  
    Maximum            :         0.000000 bb$1zSA  
    Mean               :        -0.000000 $_gv(&ZT  
    Standard Deviation :         0.000000 B)rBM  
    D!i|KI/  
    Monte Carlo Analysis: qos/pm$&i  
    Number of trials: 20 /bmkt@$-0  
    S`vw<u4t  
    Initial Statistics: Normal Distribution ] ~ }~d(  
    hPUZ{#;n  
      Trial       Criterion        Change 845\u&  
          1     0.42804416    -0.11598818 KVoM\ttP  
    Change in Focus                :      -0.400171 {vur9L  
          2     0.54384387    -0.00018847 2~h Q   
    Change in Focus                :       1.018470 GE\({V.W  
          3     0.44510003    -0.09893230 [5Zi\'~UH)  
    Change in Focus                :      -0.601922 u3sr"w&  
          4     0.18154684    -0.36248550 )4H0Bz2G  
    Change in Focus                :       0.920681 nFwdW@E9  
          5     0.28665820    -0.25737414 }{v0}-~@  
    Change in Focus                :       1.253875 E&Sr+D aPD  
          6     0.21263372    -0.33139862 w<Iq:3  
    Change in Focus                :      -0.903878 },#AlShZu  
          7     0.40051424    -0.14351809 b)T6%2  
    Change in Focus                :      -1.354815 {7Kl #b  
          8     0.48754161    -0.05649072 1h`#H:  
    Change in Focus                :       0.215922 |xpOU*k  
          9     0.40357468    -0.14045766 /}s#   
    Change in Focus                :       0.281783 yaAg!mW  
         10     0.26315315    -0.28087919 ,Uy~O(F t  
    Change in Focus                :      -1.048393 YW"nPZNPy~  
         11     0.26120585    -0.28282649 kZ!&3G9>-  
    Change in Focus                :       1.017611 ictOC F  
         12     0.24033815    -0.30369419 VGOdJ|2]Wr  
    Change in Focus                :      -0.109292 iF1zLI<A  
         13     0.37164046    -0.17239188 y <P1VES  
    Change in Focus                :      -0.692430 b+$-f:mj  
         14     0.48597489    -0.05805744 +sXnC\  
    Change in Focus                :      -0.662040 %3q7i`AZ  
         15     0.21462327    -0.32940907 Z FIgKWZ'  
    Change in Focus                :       1.611296 dkZ[~hEQG-  
         16     0.43378226    -0.11025008 Ev&aD  
    Change in Focus                :      -0.640081 :Z]\2(x  
         17     0.39321881    -0.15081353 'WwD$e0=  
    Change in Focus                :       0.914906 I5g!c|#y  
         18     0.20692530    -0.33710703 D+*_iM6[-  
    Change in Focus                :       0.801607 5ma~Pjt8}  
         19     0.51374068    -0.03029165 (@xr/9:i  
    Change in Focus                :       0.947293 B|rf[EI>  
         20     0.38013374    -0.16389860 iRL|u~bj  
    Change in Focus                :       0.667010 AaJz3oncJ  
    ~-NlTx  
    Number of traceable Monte Carlo files generated: 20 M532>+A]Za  
    lUHpGr|U%  
    Nominal     0.54403234 5Veybchy "  
    Best        0.54384387    Trial     2 /x&52~X5-  
    Worst       0.18154684    Trial     4 +Z/aG k;  
    Mean        0.35770970 7XiR)jYo*  
    Std Dev     0.11156454 QBTjiaYGa'  
    |z.Ov&d4)(  
    wTVd){q`.  
    Compensator Statistics: 3d>xg%?  
    Change in back focus: *iujJ i  
    Minimum            :        -1.354815 YXTd^M~@D  
    Maximum            :         1.611296 QCvst*  
    Mean               :         0.161872 O%busM$P)/  
    Standard Deviation :         0.869664 SWMi+)  
    [214b=  
    90% >       0.20977951               WJw %[_W  
    80% >       0.22748071               PH]ui=  
    50% >       0.38667627               j*@EJ"Gm>  
    20% >       0.46553746               +L<x0-&  
    10% >       0.50064115                e{`DvfY21  
    #6qLu  
    End of Run. 8nHFNOv6  
    N+0`Jm  
    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 jR o4+8  
    *6 1G<I  
    Rac4a@hZ  
    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 BJ7m3[lz  
    =;@?bTmqD  
    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                 Lw!Q*3c  
    80% >       0.22748071                 ai,Nx:r   
    50% >       0.38667627                 f~NGIlgR  
    20% >       0.46553746                 8hx 3pvmk  
    10% >       0.50064115 J(JqusQd !  
    "dO>P*k,  
    最后这个数值是MTF值呢，还是MTF的公差？ n!K<g.tjW  
    hRvj iK\  
    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？？？   atA:v3"  
    x.OCE`  
    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  : .Y8z3O  
    90% >       0.20977951                 HMQi:s7%  
    80% >       0.22748071                 ;TAf[[P  
    50% >       0.38667627                 CH6^;.  
    20% >       0.46553746                 |fx*F}1  
    10% >       0.50064115 K5O#BBX=  
    ....... <+1d'VQ2  
    [xF(t @p  
    6!|-,t><  
    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   D<=:9  
    Mode                : Sensitivities |K(j}^1k  
    Sampling            : 2 y^vB_[6l  
    Nominal Criterion   : 0.54403234 {5tb.{  
    Test Wavelength     : 0.6328 -!OFt}  
    (^fiw%#  
    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？ '~2S BX?J  
    dd+[FU  
    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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