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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 0~(K@U>#  
    [f^:V:) {  
    <Be:fnPX7  
    @2Lp I*]C  
    然后添加了默认公差分析，基本没变 R|jt mI?  
    V!Px975P  
    "G^Z>Z-`  
    00?_10x)  
    然后运行分析的结果如下： 3KyIBrdi?  
    ps DY}y\"  
    Analysis of Tolerances x:7"/H|  
    jf`QoK  
    File : E:\光学设计资料\zemax练习\f500.ZMX H%LoI)w  
    Title: "~1{|lj|)  
    Date : TUE JUN 21 2011 @B@`V F  
    xnuu#@f  
    Units are Millimeters. (;9-8Y&_d  
    All changes are computed using linear differences. LFzL{rny!U  
    Yq6e=?-  
    Paraxial Focus compensation only. ^V1.Y  
    gQ < >S  
    WARNING: Solves should be removed prior to tolerancing. |6cz r  
    ;qA(!`h+  
    Mnemonics: E%[2NsOM]  
    TFRN: Tolerance on curvature in fringes. 3Kx&+  
    TTHI: Tolerance on thickness. Y$vobi$  
    TSDX: Tolerance on surface decentering in x. V<:)bG4;d  
    TSDY: Tolerance on surface decentering in y. 9BZyCz  
    TSTX: Tolerance on surface tilt in x (degrees). K1th>!JW'  
    TSTY: Tolerance on surface tilt in y (degrees). V0rS^SAF  
    TIRR: Tolerance on irregularity (fringes). I@$cw3  
    TIND: Tolerance on Nd index of refraction. b"DV8fdX  
    TEDX: Tolerance on element decentering in x. {Wi)/B}  
    TEDY: Tolerance on element decentering in y. $s2Y,0>I6  
    TETX: Tolerance on element tilt in x (degrees). I"=a:q  
    TETY: Tolerance on element tilt in y (degrees). XF6ed  
    wM-I*<L>  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ?M}W ;Z  
    '`)r<lYN,  
    WARNING: Boundary constraints on compensators will be ignored. qZV.~F+  
    g< F7UA  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm \>DMN #  
    Mode                : Sensitivities (bX77 Xr  
    Sampling            : 2 K P1;u#v  
    Nominal Criterion   : 0.54403234 L@|xpq  
    Test Wavelength     : 0.6328 /8Sr(  
    7f$ hg8  
    |7pi9  
    Fields: XY Symmetric Angle in degrees \y7kb  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY  dcd9AW=  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 }akF=/M  
    F[ '<;}  
    Sensitivity Analysis: ?o D]J  
    CDT%/9+-  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| g'%^-S ]  
    Type                      Value      Criterion        Change          Value      Criterion        Change i$z).S?1  
    Fringe tolerance on surface 1 (}4]U=/nV  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 pX/42W  
    Change in Focus                :      -0.000000                            0.000000 Ft[)m#Dj`  
    Fringe tolerance on surface 2 \#hp,XV>  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Xi:y35q  
    Change in Focus                :       0.000000                            0.000000 ru#CywK{{;  
    Fringe tolerance on surface 3 ndXUR4  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Z ? F*Z0y  
    Change in Focus                :      -0.000000                            0.000000 =SUCcdy&  
    Thickness tolerance on surface 1 z'!sc"]W6  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 <hv {,1p-r  
    Change in Focus                :       0.000000                            0.000000 smJ#.I6/L  
    Thickness tolerance on surface 2 < %t$0'  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 NbyXi3@v  
    Change in Focus                :       0.000000                           -0.000000 Lj,!0 25  
    Decenter X tolerance on surfaces 1 through 3 s?,\aSsU@  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Qp5YS  
    Change in Focus                :       0.000000                            0.000000 9i?Q=Vuc~<  
    Decenter Y tolerance on surfaces 1 through 3 6p}dl>T_y  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 rIhe}1  
    Change in Focus                :       0.000000                            0.000000 /7o{%~O  
    Tilt X tolerance on surfaces 1 through 3 (degrees) Jg2*$gL;_  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 mC,:.d  
    Change in Focus                :       0.000000                            0.000000 "%?$BoJR0  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) S#|dmg;p  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 P'Gf7sQt7  
    Change in Focus                :       0.000000                            0.000000 fJdTVs@  
    Decenter X tolerance on surface 1 |/M^q{h&7s  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 5i eF8F%  
    Change in Focus                :       0.000000                            0.000000 ,QZNH?Cp/  
    Decenter Y tolerance on surface 1 AB0>|.  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 \Q~HL_fy|Y  
    Change in Focus                :       0.000000                            0.000000 z7PmyU >  
    Tilt X tolerance on surface (degrees) 1 3yXSv1  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 DQ{"6-  
    Change in Focus                :       0.000000                            0.000000 i\yp(tE%^  
    Tilt Y tolerance on surface (degrees) 1 Q\qI+F2?  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 tDQo1,(oY  
    Change in Focus                :       0.000000                            0.000000 6$ \69   
    Decenter X tolerance on surface 2 b&_u+g  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 $psPNJG  
    Change in Focus                :       0.000000                            0.000000 UVlXDebl  
    Decenter Y tolerance on surface 2 S4!}7NOh  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 vk K8D#K  
    Change in Focus                :       0.000000                            0.000000 -SeHz.` N  
    Tilt X tolerance on surface (degrees) 2 7+c}D>/`:  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 P6 ~& ,a  
    Change in Focus                :       0.000000                            0.000000 ~ ~U,  
    Tilt Y tolerance on surface (degrees) 2 E8Y(C_:s  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 zAA3bgaa  
    Change in Focus                :       0.000000                            0.000000 #BOLq`9 f  
    Decenter X tolerance on surface 3 y=k!>Y|E  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 |-zefzD|  
    Change in Focus                :       0.000000                            0.000000 }Lc8tj<  
    Decenter Y tolerance on surface 3 8HxtmFqG  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ^a #  
    Change in Focus                :       0.000000                            0.000000 BqG7E t  
    Tilt X tolerance on surface (degrees) 3 ^3 6oqe{  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ;>jLRx<KC  
    Change in Focus                :       0.000000                            0.000000 ll#_v^  
    Tilt Y tolerance on surface (degrees) 3 )>+J`NFa  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 hG!|ts  
    Change in Focus                :       0.000000                            0.000000 (! "+\KY  
    Irregularity of surface 1 in fringes u7G9 eN  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 FXO{i:Zo  
    Change in Focus                :       0.000000                            0.000000 nR#'BBlI  
    Irregularity of surface 2 in fringes >DkRl  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 &l;wb.%ijW  
    Change in Focus                :       0.000000                            0.000000 b 8~7C4  
    Irregularity of surface 3 in fringes <HMmsw  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 M?I^Od'8  
    Change in Focus                :       0.000000                            0.000000 I>n2# -8  
    Index tolerance on surface 1 Fb^f`UI  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 |*te69RX  
    Change in Focus                :       0.000000                            0.000000 ov%.+5P  
    Index tolerance on surface 2 US2Tdmy@05  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 =c Krp'  
    Change in Focus                :       0.000000                           -0.000000 em, j>qp  
    0?/vcsO  
    Worst offenders: m>8tA+K)+)  
    Type                      Value      Criterion        Change S<=|i  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 wpS $ -  
    TSTY   2             0.20000000     0.35349910    -0.19053324 0{Bhr12V  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 jB-wJNP/  
    TSTX   2             0.20000000     0.35349910    -0.19053324 ^,,lo<d_L  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 %LZ-i?DL4Q  
    TSTY   1             0.20000000     0.42678383    -0.11724851 (rB?@:zN  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 YM4njkI7  
    TSTX   1             0.20000000     0.42678383    -0.11724851 IKVS7m  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 w829 8Kl  
    TSTY   3             0.20000000     0.42861670    -0.11541563 u .R   
    /aX#j`PrH  
    Estimated Performance Changes based upon Root-Sum-Square method: e}bY 9  
    Nominal MTF                 :     0.54403234 o:nh3K/YJ  
    Estimated change            :    -0.36299231 ]~J.YX9ST  
    Estimated MTF               :     0.18104003 ^eHf'^Cvvu  
    ,W:Bh$%  
    Compensator Statistics: 3oE3bBj  
    Change in back focus: 6j5?&)xJ  
    Minimum            :        -0.000000 QCVwslj,K  
    Maximum            :         0.000000 Qe;j_ BH  
    Mean               :        -0.000000 zbyJ5~  
    Standard Deviation :         0.000000 9!UFLZR  
    /'WVRa  
    Monte Carlo Analysis: QJKVNOo  
    Number of trials: 20 t]PO4GA  
    I$vM )+v=  
    Initial Statistics: Normal Distribution Mg^.~8\d e  
    vddh 2G  
      Trial       Criterion        Change XJ9bY\>)q1  
          1     0.42804416    -0.11598818 Sh2;^6d  
    Change in Focus                :      -0.400171 .p d_SQ~  
          2     0.54384387    -0.00018847 b{i7FRR>o4  
    Change in Focus                :       1.018470 3|g]2|~w@h  
          3     0.44510003    -0.09893230 u>I;Cir4  
    Change in Focus                :      -0.601922 5p5S_%R$e  
          4     0.18154684    -0.36248550 pGhA  
    Change in Focus                :       0.920681 Bp:i[9w  
          5     0.28665820    -0.25737414 n]]!:jFC  
    Change in Focus                :       1.253875 J^]Y`Q`  
          6     0.21263372    -0.33139862 0"O22<K3a  
    Change in Focus                :      -0.903878 {8a s _  
          7     0.40051424    -0.14351809 KtY_m`DY4R  
    Change in Focus                :      -1.354815 8 ?+t+m[  
          8     0.48754161    -0.05649072 +w'{I`QIL0  
    Change in Focus                :       0.215922 DGllJ_/Z  
          9     0.40357468    -0.14045766 #w<:H1,4  
    Change in Focus                :       0.281783 q9`!T4,  
         10     0.26315315    -0.28087919 \JX.)&> -  
    Change in Focus                :      -1.048393 ob3Z I  
         11     0.26120585    -0.28282649 //\UthOT  
    Change in Focus                :       1.017611 ;q6FdS  
         12     0.24033815    -0.30369419 %}%vey  
    Change in Focus                :      -0.109292 ;}=[( eqA  
         13     0.37164046    -0.17239188 8LouCv(>  
    Change in Focus                :      -0.692430 eE'2B."F  
         14     0.48597489    -0.05805744 ?[K \X  
    Change in Focus                :      -0.662040 q>X%MN y  
         15     0.21462327    -0.32940907 }\oy?_8~  
    Change in Focus                :       1.611296 0W1=9+c|X  
         16     0.43378226    -0.11025008 {}TR'Y4  
    Change in Focus                :      -0.640081 jSyF]$"  
         17     0.39321881    -0.15081353 &%/kPF~<  
    Change in Focus                :       0.914906 9G'Q3? z  
         18     0.20692530    -0.33710703 o]vU(j_Ju  
    Change in Focus                :       0.801607 8}0O @ wq  
         19     0.51374068    -0.03029165 R;*3";+v|:  
    Change in Focus                :       0.947293 T;u>]"S  
         20     0.38013374    -0.16389860 c%+9uu3  
    Change in Focus                :       0.667010 B3V=;zn3  
    [|\JIr=of5  
    Number of traceable Monte Carlo files generated: 20 %kg%ttu7  
    XNU[\I  
    Nominal     0.54403234 Yy"05V.  
    Best        0.54384387    Trial     2 9rn[46s`  
    Worst       0.18154684    Trial     4 8R6!SB  
    Mean        0.35770970 D%0GXUp  
    Std Dev     0.11156454 5r:SBt|/  
    aiKZ$KLC  
    n>Rt9   
    Compensator Statistics: coxMsDs  
    Change in back focus: 54Baz  
    Minimum            :        -1.354815 o!3-=<^  
    Maximum            :         1.611296 5$e|@/(0  
    Mean               :         0.161872 Bk~lE]Q3c7  
    Standard Deviation :         0.869664 T`;>Kq:s  
    ">G|\_ZF  
    90% >       0.20977951               <[H1S@{W  
    80% >       0.22748071               <Cvlz^K[  
    50% >       0.38667627               L{)e1p]q  
    20% >       0.46553746               >HUU`= SC  
    10% >       0.50064115                GB(o)I#h  
    62&(+'$n  
    End of Run. DFz,>DM;  
    0wLu*K5$4E  
    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 (=H%VXQH  
    ['MG/FKuv  
    _M/ckv1q@  
    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 +oZq~2?*S6  
    _91g=pM   
    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                 M-3kF"  
    80% >       0.22748071                 2r2qZ#I}  
    50% >       0.38667627                 ab!,)^  
    20% >       0.46553746                 G[1:<Vg8  
    10% >       0.50064115 nc#}-}`5  
    O(8Px  
    最后这个数值是MTF值呢，还是MTF的公差？ cv(9v =](  
    F_o5(`>^  
    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？？？   )UA};Fus  
    e`%U}_[d  
    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  : xN lxi  
    90% >       0.20977951                 WWf#in  
    80% >       0.22748071                 O# n<`;W  
    50% >       0.38667627                 /Kcp9Qx  
    20% >       0.46553746                 E,u/^V9x  
    10% >       0.50064115 cAFYEx/(  
    ....... gR7in!8  
    $gZC"~BR  
    AA=zDB<N  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   tqo k.h  
    Mode                : Sensitivities d\eTyN'rA  
    Sampling            : 2 M N-j$-y}  
    Nominal Criterion   : 0.54403234 l!S}gbM  
    Test Wavelength     : 0.6328 \%],pZsA~  
    =:neGqd\_E  
    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？ 8PRKSJ[@K  
    5~ip N/)E  
    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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