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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 G6Nb{m  
    Rh<N);Sl7  
    )xt4Wk/  
    EnJ!mr  
    然后添加了默认公差分析，基本没变 CTp!di|  
    =cn~BnowY  
    +s~.A_7)  
    3D_"y Z  
    然后运行分析的结果如下： ah+j!e  
    LuS+_|]x  
    Analysis of Tolerances oH X$k{6  
    ,E}$[mHyjz  
    File : E:\光学设计资料\zemax练习\f500.ZMX J +q|$K6  
    Title: :YNp8!?T?  
    Date : TUE JUN 21 2011 V`bs&5#Sx  
    !re1EL  
    Units are Millimeters. * t!r@k  
    All changes are computed using linear differences. r~>,$[|n})  
    WYszk ,E  
    Paraxial Focus compensation only. u7].}60.'  
    !d8A  
    WARNING: Solves should be removed prior to tolerancing. Js{= i>D  
    mCdgKr|n  
    Mnemonics: " U8S81'  
    TFRN: Tolerance on curvature in fringes. ; )llt G  
    TTHI: Tolerance on thickness. &{z<kmc$6  
    TSDX: Tolerance on surface decentering in x.  zF: j  
    TSDY: Tolerance on surface decentering in y. H;S%Y`V  
    TSTX: Tolerance on surface tilt in x (degrees). *7RvHHf  
    TSTY: Tolerance on surface tilt in y (degrees). l r~gG3   
    TIRR: Tolerance on irregularity (fringes). @;Y~frT  
    TIND: Tolerance on Nd index of refraction. o`6|ba  
    TEDX: Tolerance on element decentering in x. 6ep>hS4A&  
    TEDY: Tolerance on element decentering in y. 62\&RRB i  
    TETX: Tolerance on element tilt in x (degrees). KDTDJ8  
    TETY: Tolerance on element tilt in y (degrees). o8ppMM8_R[  
    o@k84+tn(  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. R#eg^7HfX  
    > 0.W`j(s  
    WARNING: Boundary constraints on compensators will be ignored. X3B{8qx_>  
    Fn+ ?u  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm !w2gGy:I>  
    Mode                : Sensitivities ZnfNQl[  
    Sampling            : 2 euQ.ArF  
    Nominal Criterion   : 0.54403234 RiR:69xwR*  
    Test Wavelength     : 0.6328 *e/K:k  
    XvKFPr0~  
    YI@Fhr &NU  
    Fields: XY Symmetric Angle in degrees p]ivf  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ln<]-)&C  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 z$[C#5+2  
    Bs!4H2@{(]  
    Sensitivity Analysis: 1RqgMMJL  
    H%}IuHhN)  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ;t(f1rPyE  
    Type                      Value      Criterion        Change          Value      Criterion        Change L1 #Ij#  
    Fringe tolerance on surface 1 9[Qd)%MO  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 rU2iy"L  
    Change in Focus                :      -0.000000                            0.000000 nE|@IGH  
    Fringe tolerance on surface 2 ^gYD*K!*  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 a07=tD  
    Change in Focus                :       0.000000                            0.000000 ?c#$dc"  
    Fringe tolerance on surface 3 z`U Ukl}T  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 -iN.Iuc{b_  
    Change in Focus                :      -0.000000                            0.000000 _*6v|Ed?  
    Thickness tolerance on surface 1 :&w{\-0{  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 '&yeQ   
    Change in Focus                :       0.000000                            0.000000 =? :@  
    Thickness tolerance on surface 2 ga0'zo9K  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 I021p5h|  
    Change in Focus                :       0.000000                           -0.000000 n(vDytrj;  
    Decenter X tolerance on surfaces 1 through 3 !; v~^#M]~  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 B'weok  
    Change in Focus                :       0.000000                            0.000000 !GK$[9  
    Decenter Y tolerance on surfaces 1 through 3 r\M9_s8  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 .EP6oKA  
    Change in Focus                :       0.000000                            0.000000 >e&:`2%.  
    Tilt X tolerance on surfaces 1 through 3 (degrees) m~`>`4  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ,mFsM!|  
    Change in Focus                :       0.000000                            0.000000 ;4#D,zlO^  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 3,eIB(  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 [L~@uAMw:  
    Change in Focus                :       0.000000                            0.000000 0$P/jt  
    Decenter X tolerance on surface 1 #kmh:P  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 lU2c_4  
    Change in Focus                :       0.000000                            0.000000 d- E4~)Qy  
    Decenter Y tolerance on surface 1 oC |WBS  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 E]} n(  
    Change in Focus                :       0.000000                            0.000000 C>QIrZu  
    Tilt X tolerance on surface (degrees) 1 KEr\nKT1  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 nU z7|y  
    Change in Focus                :       0.000000                            0.000000 :@3Wg3N  
    Tilt Y tolerance on surface (degrees) 1 rOfK~g,X  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 5OP`c<  
    Change in Focus                :       0.000000                            0.000000 q6q1\YB  
    Decenter X tolerance on surface 2 Y}STF  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 f4('gl9  
    Change in Focus                :       0.000000                            0.000000 !|G(Yg7C  
    Decenter Y tolerance on surface 2 =Agg_h   
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 NAFsFngqH  
    Change in Focus                :       0.000000                            0.000000 SU%DW4 6  
    Tilt X tolerance on surface (degrees) 2 _|{aC1Y!V  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ]!{y a8  
    Change in Focus                :       0.000000                            0.000000 ^]c6RE_  
    Tilt Y tolerance on surface (degrees) 2 qr(`&hB-L  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 &%C4Ugo  
    Change in Focus                :       0.000000                            0.000000 !K0JV|-?t  
    Decenter X tolerance on surface 3 /Z%>ArAx  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 mY&ud>,U:  
    Change in Focus                :       0.000000                            0.000000 {G i h&N  
    Decenter Y tolerance on surface 3 $#NQ <3  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 \gO,hST   
    Change in Focus                :       0.000000                            0.000000 RMXzU  
    Tilt X tolerance on surface (degrees) 3 }IkQA#4$  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 *~VxC{  
    Change in Focus                :       0.000000                            0.000000 9IZu$-  
    Tilt Y tolerance on surface (degrees) 3 ,/Cq v   
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ]$iN#d|ZU  
    Change in Focus                :       0.000000                            0.000000 rR{,)fX;  
    Irregularity of surface 1 in fringes LXfCmc9|Z  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Qvoqx>2p5  
    Change in Focus                :       0.000000                            0.000000 /CX VLl8~  
    Irregularity of surface 2 in fringes )mN9(Ob!  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 \E4B&!m  
    Change in Focus                :       0.000000                            0.000000 9s$U%F6}  
    Irregularity of surface 3 in fringes XSRdqU>Aun  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 `S/wJ'c  
    Change in Focus                :       0.000000                            0.000000 `)>7)={  
    Index tolerance on surface 1 3.R#&Zxt  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 dE=Ue#1U@5  
    Change in Focus                :       0.000000                            0.000000 DPHQ,dkp  
    Index tolerance on surface 2 +V(5w`qx  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 lX!`zy{3k  
    Change in Focus                :       0.000000                           -0.000000 ~=n#}{/  
    O/Y)&VG7  
    Worst offenders: e 9$C#D> D  
    Type                      Value      Criterion        Change v90T{1+M|4  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 }=}>9DS M  
    TSTY   2             0.20000000     0.35349910    -0.19053324 m~l F`?  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 pxINw>\Qv  
    TSTX   2             0.20000000     0.35349910    -0.19053324 \x\ 5D^Vc  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 rjWLMbd.<  
    TSTY   1             0.20000000     0.42678383    -0.11724851 \c`oy=qY0  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 <9A@`_';Aq  
    TSTX   1             0.20000000     0.42678383    -0.11724851 wzWbB2Mb5  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 j6}R7 $JR  
    TSTY   3             0.20000000     0.42861670    -0.11541563 \+PIe7f_  
    1&)_(|p[C  
    Estimated Performance Changes based upon Root-Sum-Square method: akuJz  
    Nominal MTF                 :     0.54403234 Yxd X#3  
    Estimated change            :    -0.36299231 f|7u_f  
    Estimated MTF               :     0.18104003 GUB`|is^  
    5_o$<\I\  
    Compensator Statistics: U yqXMbw@  
    Change in back focus: 0lk;F  
    Minimum            :        -0.000000 b!>\2DlyJ  
    Maximum            :         0.000000 Hgc=M  
    Mean               :        -0.000000 jFG0`n}I  
    Standard Deviation :         0.000000 [bQj,PZ&  
    $a;]_Y  
    Monte Carlo Analysis: ^s/  
    Number of trials: 20 irBDGT~  
    7 6fIC  
    Initial Statistics: Normal Distribution 6vzk\n  
    /uqu32;o  
      Trial       Criterion        Change m>&HuHf  
          1     0.42804416    -0.11598818 xycH~ ?  
    Change in Focus                :      -0.400171 }OShT+xeX  
          2     0.54384387    -0.00018847 K`:=]Z8  
    Change in Focus                :       1.018470 Y;J*4k]  
          3     0.44510003    -0.09893230 P* #8 ZMA<  
    Change in Focus                :      -0.601922 /'DwfX  
          4     0.18154684    -0.36248550 ?>uew^$d[w  
    Change in Focus                :       0.920681 |01?w|  
          5     0.28665820    -0.25737414 dWRrG-'  
    Change in Focus                :       1.253875 5"Kx9n|  
          6     0.21263372    -0.33139862 =d;Vk  
    Change in Focus                :      -0.903878 N]/!mo?  
          7     0.40051424    -0.14351809 {==pZpyyh  
    Change in Focus                :      -1.354815 :K.4n  
          8     0.48754161    -0.05649072 Fw4*  
    Change in Focus                :       0.215922 vFmJ;J  
          9     0.40357468    -0.14045766 l0]d  
    Change in Focus                :       0.281783 }k$4/7ri  
         10     0.26315315    -0.28087919 FcbM7/  
    Change in Focus                :      -1.048393 m@xi0t  
         11     0.26120585    -0.28282649 e,1u  
    Change in Focus                :       1.017611 zzpZ19"`1  
         12     0.24033815    -0.30369419 **_&i!dtL  
    Change in Focus                :      -0.109292 h\[\\m O  
         13     0.37164046    -0.17239188 0au)g!ti  
    Change in Focus                :      -0.692430 }E <^gAh}  
         14     0.48597489    -0.05805744 "&YYO#YO  
    Change in Focus                :      -0.662040 ilLBCS}  
         15     0.21462327    -0.32940907 eH>#6R1-  
    Change in Focus                :       1.611296 jh ez  
         16     0.43378226    -0.11025008 y f1CXldi  
    Change in Focus                :      -0.640081 V-O(U*]  
         17     0.39321881    -0.15081353 VkmRh,T  
    Change in Focus                :       0.914906 g;p)n  
         18     0.20692530    -0.33710703 MEZ{j%-a  
    Change in Focus                :       0.801607 KlxN~/gyik  
         19     0.51374068    -0.03029165 `d]Z)*9  
    Change in Focus                :       0.947293 dXvt6kF  
         20     0.38013374    -0.16389860 nY-* i!H  
    Change in Focus                :       0.667010 C"<s/h  
    FY0%XW  
    Number of traceable Monte Carlo files generated: 20 l)8&Ip  
    Xh3;   
    Nominal     0.54403234 !F4;_A`X  
    Best        0.54384387    Trial     2 |cbd6e{!  
    Worst       0.18154684    Trial     4 oh8L`=>&a  
    Mean        0.35770970 O mMX$YID  
    Std Dev     0.11156454 hXL|22>w<  
    Ws[D{dS/  
    &]p}+{ (>  
    Compensator Statistics: X~U >LLr  
    Change in back focus: -e-e9uP  
    Minimum            :        -1.354815 cSD{$B:  
    Maximum            :         1.611296 I+?hG6NM  
    Mean               :         0.161872 _]>JB0IY  
    Standard Deviation :         0.869664 C*~aSl7  
    %IZ)3x3l  
    90% >       0.20977951               '?Bg;Z'L%  
    80% >       0.22748071               M].8HwC+  
    50% >       0.38667627               9(1rh9`=  
    20% >       0.46553746               OKue" p  
    10% >       0.50064115                !XE aF]8  
    iw]k5<qKj  
    End of Run. '&yg {n  
    ^QL 877  
    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  mw$Y  
    >9K//co"of  
    S'i;xL>  
    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 **;p (CI  
    j BS4vvX?  
    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                 %efGt6&  
    80% >       0.22748071                 Yv\!vW7I  
    50% >       0.38667627                 Gp2!xKgm  
    20% >       0.46553746                 }[=YU%[o:  
    10% >       0.50064115 HtBF=Boq  
    zQfkMa.  
    最后这个数值是MTF值呢，还是MTF的公差？ NB)t7/Us  
    O.\h'3C  
    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？？？   A" !n1P  
    Go8F5a@j  
    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  : }su6izx  
    90% >       0.20977951                 rw*M&qg!z  
    80% >       0.22748071                 hAAUecx  
    50% >       0.38667627                 G"Pj6QUva  
    20% >       0.46553746                 e6m1NH4,  
    10% >       0.50064115 lC{L6&T  
    ....... J|?[.h7tO  
    5"2@NL  
    LDX y}hm)  
    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   _UIgRkl.  
    Mode                : Sensitivities B[7A  
    Sampling            : 2 @?M; 'xMbB  
    Nominal Criterion   : 0.54403234 =W |vOfy  
    Test Wavelength     : 0.6328 "i(U  
    un&>  
    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？ ]%||KC!O  
    rNxG0^k(  
    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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