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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 !RV}dhI  
    C]82Mt  
    uGOvZO^v  
    DJhi>!xJ  
    然后添加了默认公差分析，基本没变 aB.`'d)V  
    Ie4}F|#=  
    +h"RXwlBM  
    |:C=j/f   
    然后运行分析的结果如下： ,u/GA<'#M  
    ygh*oVHO  
    Analysis of Tolerances D{~I  
    WI ' ;e4  
    File : E:\光学设计资料\zemax练习\f500.ZMX r/SV.` k  
    Title: p3&w/K{L6w  
    Date : TUE JUN 21 2011 \f .ceh;!  
    ZdfIe~Oni  
    Units are Millimeters. mJl|dk_c  
    All changes are computed using linear differences. |d&a&6U:  
    ULj'DzlfH  
    Paraxial Focus compensation only. ex1bjM7  
    1 %K^(J;  
    WARNING: Solves should be removed prior to tolerancing. Qn_*(CSp  
    d H]'&&M  
    Mnemonics: "*a^_tsT?i  
    TFRN: Tolerance on curvature in fringes. <GT&q <4w  
    TTHI: Tolerance on thickness. ZBi|B D  
    TSDX: Tolerance on surface decentering in x. j'g':U  
    TSDY: Tolerance on surface decentering in y. N^H~VG&D(  
    TSTX: Tolerance on surface tilt in x (degrees). 4fgA3%  
    TSTY: Tolerance on surface tilt in y (degrees). BNL Q]  
    TIRR: Tolerance on irregularity (fringes). pbt/i+!  
    TIND: Tolerance on Nd index of refraction. va[@XGaC3  
    TEDX: Tolerance on element decentering in x. "CX&2Xfe  
    TEDY: Tolerance on element decentering in y. :A.dlesv6  
    TETX: Tolerance on element tilt in x (degrees). u?r=;:N|y  
    TETY: Tolerance on element tilt in y (degrees). ;b-Y$<  
    8SR~{  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 0P_qtS  
    3!ZndW SHV  
    WARNING: Boundary constraints on compensators will be ignored. l@Uo4b^4x  
    g)nsP  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm S jgjGJw  
    Mode                : Sensitivities CvS}U%   
    Sampling            : 2 BxVo>r  
    Nominal Criterion   : 0.54403234 ju~js  
    Test Wavelength     : 0.6328 \$LrL  
    WW\t<O;z  
    >,wm-4&E  
    Fields: XY Symmetric Angle in degrees 4Hc+F(  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY }}y~\TB~}  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 b ;A(6^V  
    . Lbu[  
    Sensitivity Analysis: 7#wdBB%  
    D',[M)  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| j+YA/54`  
    Type                      Value      Criterion        Change          Value      Criterion        Change =wE1j  
    Fringe tolerance on surface 1 X] cI ?  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 8$4@U;Vh;  
    Change in Focus                :      -0.000000                            0.000000 9O1#%  
    Fringe tolerance on surface 2 5'*v-l,[  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 #[=%+*Q  
    Change in Focus                :       0.000000                            0.000000 &iYy  
    Fringe tolerance on surface 3 \-i5b  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 tj<a , l  
    Change in Focus                :      -0.000000                            0.000000 m$6u K0  
    Thickness tolerance on surface 1 zI1-l9 o  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 !} ~K'1"  
    Change in Focus                :       0.000000                            0.000000 AT$eTZ]M  
    Thickness tolerance on surface 2 !A@Ft}FB  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 vG;)(.:  
    Change in Focus                :       0.000000                           -0.000000 C 0@tMB7  
    Decenter X tolerance on surfaces 1 through 3 gK7bP'S8H  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 w=Cq v~  
    Change in Focus                :       0.000000                            0.000000 /1OzX'5f  
    Decenter Y tolerance on surfaces 1 through 3 !5FZxmUup  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 +OM`c7M:  
    Change in Focus                :       0.000000                            0.000000 q3Tp /M.  
    Tilt X tolerance on surfaces 1 through 3 (degrees) % VZ QX_  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "eRf3Q7w:  
    Change in Focus                :       0.000000                            0.000000 vQK*:IRKK  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ii,/omn:  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 wX7|a/|@  
    Change in Focus                :       0.000000                            0.000000 yhwwF n\  
    Decenter X tolerance on surface 1 x.J% c[Q8  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 N i\*<:_  
    Change in Focus                :       0.000000                            0.000000 DSb/+8KT  
    Decenter Y tolerance on surface 1 UTT7a"  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 gpt98:w:  
    Change in Focus                :       0.000000                            0.000000 b3$aPwv  
    Tilt X tolerance on surface (degrees) 1 e[`u:  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 BC}+yS \  
    Change in Focus                :       0.000000                            0.000000 e(t,~(  
    Tilt Y tolerance on surface (degrees) 1 b d!|/Lk  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851  B6| g2Tt  
    Change in Focus                :       0.000000                            0.000000 {Ftz4y)6  
    Decenter X tolerance on surface 2 4^|;a0Qy]  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 YS7R8|  
    Change in Focus                :       0.000000                            0.000000 gt~hUwL  
    Decenter Y tolerance on surface 2 ~k}>CNTr  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 TttD}`\.  
    Change in Focus                :       0.000000                            0.000000 yDk|ad|  
    Tilt X tolerance on surface (degrees) 2 r&qF v)0!`  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 io8c[#"uU  
    Change in Focus                :       0.000000                            0.000000 7*D*nY4+  
    Tilt Y tolerance on surface (degrees) 2 DH@})TN*O  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 aVI%FycYo  
    Change in Focus                :       0.000000                            0.000000 #:C?:RMS  
    Decenter X tolerance on surface 3 R[ 'k&jyi  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 \Pv_5LAo  
    Change in Focus                :       0.000000                            0.000000 e7fA-,DV  
    Decenter Y tolerance on surface 3 C9?R*2L>  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 g(9\r  
    Change in Focus                :       0.000000                            0.000000 _ 9@D o6  
    Tilt X tolerance on surface (degrees) 3 HC'k81Q  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 u2p5* gzZ  
    Change in Focus                :       0.000000                            0.000000 M@LI(;  
    Tilt Y tolerance on surface (degrees) 3 Z33&FUU  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 f{]eb1  
    Change in Focus                :       0.000000                            0.000000 fevL u[,  
    Irregularity of surface 1 in fringes [8T  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 JjH#,@'.  
    Change in Focus                :       0.000000                            0.000000 >o\s'i[  
    Irregularity of surface 2 in fringes %FN3/iM  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 J|ni'Hb  
    Change in Focus                :       0.000000                            0.000000 0)c9X[sG  
    Irregularity of surface 3 in fringes CTqAhL 4}  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 >,ThIwRN  
    Change in Focus                :       0.000000                            0.000000 ]6PX4oK_t  
    Index tolerance on surface 1 W6kDQ& q  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ]}K\&ho2  
    Change in Focus                :       0.000000                            0.000000 m5m'ByX(*  
    Index tolerance on surface 2 u9d4zR  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 @PYCl  
    Change in Focus                :       0.000000                           -0.000000 m -{t%[Y  
    J2c.J/o  
    Worst offenders: }]8n3&*  
    Type                      Value      Criterion        Change pP1|/f5n`  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 7N@4c   
    TSTY   2             0.20000000     0.35349910    -0.19053324 dMcCSwYh  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 sn|q EH  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Y Mes314"  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ]Bp db'  
    TSTY   1             0.20000000     0.42678383    -0.11724851 (WW*yv.J  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 [# X:!xcl  
    TSTX   1             0.20000000     0.42678383    -0.11724851 $~#N1   
    TSTY   3            -0.20000000     0.42861670    -0.11541563 M7$ h  
    TSTY   3             0.20000000     0.42861670    -0.11541563 Pc= S^}+  
    A7{l60(5  
    Estimated Performance Changes based upon Root-Sum-Square method: GrwoV~  
    Nominal MTF                 :     0.54403234 R"j6 w[tn  
    Estimated change            :    -0.36299231 yMdAe>@  
    Estimated MTF               :     0.18104003 F4!,8)}  
    @B<B#  
    Compensator Statistics: 6$]p;}#  
    Change in back focus: [dszz7/L  
    Minimum            :        -0.000000 W{0gtT0  
    Maximum            :         0.000000 ?DN4j!/$  
    Mean               :        -0.000000 P)7_RE*gY  
    Standard Deviation :         0.000000 XM0;cF  
    "E? 8. `T  
    Monte Carlo Analysis: IEi E6z]L(  
    Number of trials: 20 ?q}XD c  
    %]>LnbM>4  
    Initial Statistics: Normal Distribution =Mg/m'QI  
    &4aY5y`8+f  
      Trial       Criterion        Change oD5VE  
          1     0.42804416    -0.11598818 s_(%1/{  
    Change in Focus                :      -0.400171 /+FZDRf!r  
          2     0.54384387    -0.00018847 ^bVY&iXNu  
    Change in Focus                :       1.018470 d+9T}? T:*  
          3     0.44510003    -0.09893230 <Pg]V:=g'  
    Change in Focus                :      -0.601922 un+U_|>c  
          4     0.18154684    -0.36248550 njz:7]>e  
    Change in Focus                :       0.920681 EYwDv4H,g  
          5     0.28665820    -0.25737414 \\j98(i  
    Change in Focus                :       1.253875 /}~; b#t  
          6     0.21263372    -0.33139862 T<p,KqH  
    Change in Focus                :      -0.903878 &hK5WP6whW  
          7     0.40051424    -0.14351809 Z;/"-.i  
    Change in Focus                :      -1.354815 S-FoyID\H  
          8     0.48754161    -0.05649072 \M ]w I  
    Change in Focus                :       0.215922 G4!$48  
          9     0.40357468    -0.14045766 kg2?IL  
    Change in Focus                :       0.281783 l:!4^>SC  
         10     0.26315315    -0.28087919 sFR'y.  
    Change in Focus                :      -1.048393 vt;<+"eps  
         11     0.26120585    -0.28282649 )~hsd+ 0t  
    Change in Focus                :       1.017611 uUAib<wdPL  
         12     0.24033815    -0.30369419 x;RjLI4h  
    Change in Focus                :      -0.109292 G\ twx ;  
         13     0.37164046    -0.17239188 ;pU#3e+P8  
    Change in Focus                :      -0.692430 fo"dX4%}  
         14     0.48597489    -0.05805744 5 =Os sAr  
    Change in Focus                :      -0.662040 #y~`nyg%|  
         15     0.21462327    -0.32940907 "s']@Qv  
    Change in Focus                :       1.611296 _8Si8+j  
         16     0.43378226    -0.11025008 D`r^2(WW  
    Change in Focus                :      -0.640081 oR.KtS$uh  
         17     0.39321881    -0.15081353 AHws5#;$6*  
    Change in Focus                :       0.914906 N=) E$h  
         18     0.20692530    -0.33710703 u~X]W3  
    Change in Focus                :       0.801607 ;SBM7fwRk  
         19     0.51374068    -0.03029165 =rj5 q  
    Change in Focus                :       0.947293 Ga\E`J$c  
         20     0.38013374    -0.16389860 wW4/]soM  
    Change in Focus                :       0.667010 MB<oWH[e)  
    _ ?f~UvK  
    Number of traceable Monte Carlo files generated: 20 \ H#zRSbZ  
    >@b7 0X!J]  
    Nominal     0.54403234 8-cB0F=j_  
    Best        0.54384387    Trial     2 q9- =>  
    Worst       0.18154684    Trial     4 P |c6V  
    Mean        0.35770970 axOdGv5  
    Std Dev     0.11156454 *Z7W'-  
    YaTJKgi"0  
    <Bc J;X/  
    Compensator Statistics: XVi?- /2  
    Change in back focus: @DT${,.49  
    Minimum            :        -1.354815 w < p  
    Maximum            :         1.611296 YQ>M&lnQ<  
    Mean               :         0.161872 Aa* UV6(v  
    Standard Deviation :         0.869664 GXC:~$N  
    Q!Rknj 2  
    90% >       0.20977951               kV7c\|N9  
    80% >       0.22748071               R1'bB"$  
    50% >       0.38667627               [`P+{ R  
    20% >       0.46553746               a;AvY O  
    10% >       0.50064115                ^ N]u  
    -#v1b>ScY  
    End of Run. }q-_|(b;  
    1F'j .1  
    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 [Q,E( s  
    <`EZ^S L;  
    }E$^!q{  
    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 VsOn j~@  
    u"-q"0  
    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                 h9c54Ux  
    80% >       0.22748071                 8D[P*?O  
    50% >       0.38667627                 1Qui.],c  
    20% >       0.46553746                 s%"3F<\  
    10% >       0.50064115 @#Jc!p7)  
    cP63q|[[  
    最后这个数值是MTF值呢，还是MTF的公差？ \;&9h1?Mn  
    &!#,p{}ccU  
    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？？？   TTpK8cC  
    O=8:K'  
    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  : nf?;h!_7  
    90% >       0.20977951                 Rdao  
    80% >       0.22748071                 } <; y,4f  
    50% >       0.38667627                 X+"8yZz3?  
    20% >       0.46553746                 8 &:  *<  
    10% >       0.50064115 ,!U 5;  
    ....... i~:FlW]  
    V4'G%!NY  
    pn?c6K vO  
    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   #|`/K[.xd%  
    Mode                : Sensitivities 6?OH"!b2-}  
    Sampling            : 2 KIO{6  
    Nominal Criterion   : 0.54403234 v&oE!s#  
    Test Wavelength     : 0.6328 C(7uvQ  
    |u,2A1  
    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？ e(E6 t_  
    ;i|V++$_  
    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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