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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 W;?e@}  
    $LVzhQlD  
    xnHB <xrE}  
    Ygc|9}  
    然后添加了默认公差分析，基本没变 [I}z\3Z %  
    QD-`jV3  
    tX6_n%/L  
    b[J0+l\!"  
    然后运行分析的结果如下： 2"c5<  
     U4qk<!  
    Analysis of Tolerances 8nwps(3  
    Zv(6VVj  
    File : E:\光学设计资料\zemax练习\f500.ZMX c Qe3  
    Title:  ozKS<<  
    Date : TUE JUN 21 2011 >+DM TV[O  
    "]|7%]  
    Units are Millimeters. S gssNv  
    All changes are computed using linear differences. ^7yaM B!  
    x_CY`Y  
    Paraxial Focus compensation only. *5{1.7  
    eAStpG"*  
    WARNING: Solves should be removed prior to tolerancing. Tv6y +l  
    Yr>0Qg],  
    Mnemonics: DF UTQ:N  
    TFRN: Tolerance on curvature in fringes. \01 kK)  
    TTHI: Tolerance on thickness. bGkLa/?S  
    TSDX: Tolerance on surface decentering in x. `z$P,^g`  
    TSDY: Tolerance on surface decentering in y. .PV(MV  
    TSTX: Tolerance on surface tilt in x (degrees). qOIVuzi*  
    TSTY: Tolerance on surface tilt in y (degrees). 7!wc'~;  
    TIRR: Tolerance on irregularity (fringes). 8nWPt!U:  
    TIND: Tolerance on Nd index of refraction. Fv$A%6;W  
    TEDX: Tolerance on element decentering in x. qoZ)"M  
    TEDY: Tolerance on element decentering in y. 97~>gFU77#  
    TETX: Tolerance on element tilt in x (degrees). O<#8R\v  
    TETY: Tolerance on element tilt in y (degrees). |6;-P&_n  
    jGT|Xo>t  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. u-tD_UIck  
    5=I"bnIU  
    WARNING: Boundary constraints on compensators will be ignored. y0-UO+ ;  
    H_Xk;fM  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm eoXbZ  
    Mode                : Sensitivities 1z0|uc  
    Sampling            : 2 ><S(n#EB  
    Nominal Criterion   : 0.54403234 g*`xEb= '  
    Test Wavelength     : 0.6328 hn\d{HP  
    .Z#/%y3S  
    qHtIjtt[q  
    Fields: XY Symmetric Angle in degrees R$66F>Jz^  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY wX_~H*m?  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 t&NpC;>v  
    ,7k-LAA  
    Sensitivity Analysis: [^7P ]olW  
    QPh3(K1w^  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| cx ("F /Jm  
    Type                      Value      Criterion        Change          Value      Criterion        Change 3o0ZS^#eB  
    Fringe tolerance on surface 1 LAY:R{vI  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 n>7aZ1Qa  
    Change in Focus                :      -0.000000                            0.000000 cD=IFOB*GD  
    Fringe tolerance on surface 2 sOiM/} O]  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 z+{+Q9j  
    Change in Focus                :       0.000000                            0.000000 u~2]$ /U  
    Fringe tolerance on surface 3 5pC}ZgEa<  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 }}ic{931  
    Change in Focus                :      -0.000000                            0.000000 13w(Tf  
    Thickness tolerance on surface 1 BFg&@7.X  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 HTz`$9  
    Change in Focus                :       0.000000                            0.000000 bM5o-U#^ C  
    Thickness tolerance on surface 2 ( Cg vI*O  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 W amOg0  
    Change in Focus                :       0.000000                           -0.000000 X/90S2=P  
    Decenter X tolerance on surfaces 1 through 3 F#M(#!)Y"  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Lq1?Y  
    Change in Focus                :       0.000000                            0.000000 eB=&(ZT  
    Decenter Y tolerance on surfaces 1 through 3 gu%i|-}  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ;ISe@ yR;  
    Change in Focus                :       0.000000                            0.000000 So8 Dwz?  
    Tilt X tolerance on surfaces 1 through 3 (degrees) !c{F{ t-a  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ^6R(K'E}  
    Change in Focus                :       0.000000                            0.000000 m(}}%VeR"z  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) SD{)Sq  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 $COjC!M  
    Change in Focus                :       0.000000                            0.000000 7S&$M-k  
    Decenter X tolerance on surface 1 &"I csxG  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ;,e16^\' &  
    Change in Focus                :       0.000000                            0.000000 ?FjnG_Uz`D  
    Decenter Y tolerance on surface 1 y22DBB8  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 bk;uKV+<  
    Change in Focus                :       0.000000                            0.000000 #.[eZ[  
    Tilt X tolerance on surface (degrees) 1 ?@;)2B|q  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 g>;@(:e^/  
    Change in Focus                :       0.000000                            0.000000 ZTz07Jt  
    Tilt Y tolerance on surface (degrees) 1 ciiI{T[Z  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 -W<1BJE  
    Change in Focus                :       0.000000                            0.000000 %=Z/Frd  
    Decenter X tolerance on surface 2 DcdEt=\)h  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 hV0fkQ.|  
    Change in Focus                :       0.000000                            0.000000 3+s$K(%I  
    Decenter Y tolerance on surface 2 D>@NYqMF  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 'L-DMNxBr  
    Change in Focus                :       0.000000                            0.000000 QkW'tU\^  
    Tilt X tolerance on surface (degrees) 2 Y&8,f|{R  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 3 V>$H\H  
    Change in Focus                :       0.000000                            0.000000 rF"p7  
    Tilt Y tolerance on surface (degrees) 2 qP<D9k>  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 4oueLT(zc  
    Change in Focus                :       0.000000                            0.000000 gGUKB2)  
    Decenter X tolerance on surface 3 >5:O%zQ@  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 $7c,<=  
    Change in Focus                :       0.000000                            0.000000 !|i #g$  
    Decenter Y tolerance on surface 3 +kQ=2dva  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 uf9&o#  
    Change in Focus                :       0.000000                            0.000000 5Gy#$'kdf  
    Tilt X tolerance on surface (degrees) 3 LybaE~=  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 %K-8DL8|(  
    Change in Focus                :       0.000000                            0.000000 h_S>Q  
    Tilt Y tolerance on surface (degrees) 3 la_c:#ho  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 &JqaIJh   
    Change in Focus                :       0.000000                            0.000000 ,xVAJ6_#  
    Irregularity of surface 1 in fringes megTp  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 i2  c|_B  
    Change in Focus                :       0.000000                            0.000000 0 }od Q#  
    Irregularity of surface 2 in fringes ],S {?!'1  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 I 4?oBq  
    Change in Focus                :       0.000000                            0.000000 0V(}Zj>  
    Irregularity of surface 3 in fringes ?z&%VU"  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 S7Ty}?E@  
    Change in Focus                :       0.000000                            0.000000 =3w;<1 ?'  
    Index tolerance on surface 1 Cp"7R&s  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ,&WwADZ-s  
    Change in Focus                :       0.000000                            0.000000 Cd"{7<OyM4  
    Index tolerance on surface 2 Y.]$T8  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 7g(Z @  
    Change in Focus                :       0.000000                           -0.000000 0FI |7  
    J:glJ'4E  
    Worst offenders: BDWbWA 6  
    Type                      Value      Criterion        Change >>$`]]7  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 X(*O$B{ R  
    TSTY   2             0.20000000     0.35349910    -0.19053324 adX"Yg!`{c  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 9yC22C:  
    TSTX   2             0.20000000     0.35349910    -0.19053324 |&rCXfC  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 I*3}erT  
    TSTY   1             0.20000000     0.42678383    -0.11724851 QR'#]k;>%  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 ;VAyH('~  
    TSTX   1             0.20000000     0.42678383    -0.11724851 SnmUh~`L~  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 o25rKC=o  
    TSTY   3             0.20000000     0.42861670    -0.11541563 !h7.xl OpN  
    Gw$5<%sB  
    Estimated Performance Changes based upon Root-Sum-Square method: aYb97}kI  
    Nominal MTF                 :     0.54403234 ;ISnI  
    Estimated change            :    -0.36299231 3yKmuu!  
    Estimated MTF               :     0.18104003 Tgr,1) T  
    2icQ (H;  
    Compensator Statistics: U\tx{CsSz  
    Change in back focus: yW= +6@A4  
    Minimum            :        -0.000000 O.(2  
    Maximum            :         0.000000 tj[E!  
    Mean               :        -0.000000 r.\L@Y<  
    Standard Deviation :         0.000000 V)>?[  
    ngl +`|u  
    Monte Carlo Analysis: @i;)`k5b  
    Number of trials: 20 qGV_oa74  
    <SI|)M,, 3  
    Initial Statistics: Normal Distribution ~EPVu  
    yQ N{)rv  
      Trial       Criterion        Change UE.kR+1  
          1     0.42804416    -0.11598818 _o$jk8jOjW  
    Change in Focus                :      -0.400171 aY>v  
          2     0.54384387    -0.00018847 2.Qz"YDh =  
    Change in Focus                :       1.018470 I1U2wD  
          3     0.44510003    -0.09893230 =x\`yxsG  
    Change in Focus                :      -0.601922 LD}~]  
          4     0.18154684    -0.36248550 bHe' U>  
    Change in Focus                :       0.920681 njaMI8|Pa  
          5     0.28665820    -0.25737414 hDW!pnj1  
    Change in Focus                :       1.253875 V^5d5Ao  
          6     0.21263372    -0.33139862 K8sRan[4}  
    Change in Focus                :      -0.903878 #;j:;LRU  
          7     0.40051424    -0.14351809  Qw}1q!89  
    Change in Focus                :      -1.354815 T"_'sSI>tF  
          8     0.48754161    -0.05649072 , ,{UGe 3  
    Change in Focus                :       0.215922 _xp8*2~-  
          9     0.40357468    -0.14045766 MVsFi]-  
    Change in Focus                :       0.281783 9_?xAJ  
         10     0.26315315    -0.28087919 Z,.Hz\y1D  
    Change in Focus                :      -1.048393 ^!&6 =rb  
         11     0.26120585    -0.28282649 Gs,:$Im  
    Change in Focus                :       1.017611 ]$@D=g,r  
         12     0.24033815    -0.30369419 Kf[d@ L  
    Change in Focus                :      -0.109292 &xQM!f  
         13     0.37164046    -0.17239188 + O.-o/  
    Change in Focus                :      -0.692430 KkA)p/  
         14     0.48597489    -0.05805744 &3[oM)-V  
    Change in Focus                :      -0.662040 -Lh7!d  
         15     0.21462327    -0.32940907 4VwF \  
    Change in Focus                :       1.611296 %M@K(Qu  
         16     0.43378226    -0.11025008 `GCoi ?n7  
    Change in Focus                :      -0.640081 ~P1~:AT  
         17     0.39321881    -0.15081353 6:7[>|okQ  
    Change in Focus                :       0.914906 Cku"vVw,  
         18     0.20692530    -0.33710703 "d_wu#fO)  
    Change in Focus                :       0.801607 >%j%Mj@8q|  
         19     0.51374068    -0.03029165 v _MQ]X  
    Change in Focus                :       0.947293 :CyHo6o9  
         20     0.38013374    -0.16389860 \!-BR0+y;  
    Change in Focus                :       0.667010 hw^&{x  
    y2G Us&09  
    Number of traceable Monte Carlo files generated: 20 ?l0Qi  
    +(3_V$|Dv  
    Nominal     0.54403234 Rm} ym9  
    Best        0.54384387    Trial     2 6}"c4 ^k6  
    Worst       0.18154684    Trial     4 }X&rJV  
    Mean        0.35770970 U#` e~d t<  
    Std Dev     0.11156454 'dLw8&T+W  
    0@ Y#P|QF  
    @%]A,\  
    Compensator Statistics: HeRi67  
    Change in back focus: BNu >/zGpB  
    Minimum            :        -1.354815 %=`JWLLG  
    Maximum            :         1.611296 ysW})#7X  
    Mean               :         0.161872 dZU#lg  
    Standard Deviation :         0.869664  )(G9[DG  
    z%82Vt!a5  
    90% >       0.20977951               P0m3IH)  
    80% >       0.22748071               HEF e?  
    50% >       0.38667627               L8VOiK=,  
    20% >       0.46553746               ZSC*{dD$E  
    10% >       0.50064115                Ax;[Em?I  
    ju"z  
    End of Run. m9 h '!X<  
    UlYFloZ  
    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 g4IF~\QRVi  
    h.jJAVPi  
    UerbNz|  
    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 4b8G 1fm  
    l|P"^;*zq  
    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                 smP4KC"I(d  
    80% >       0.22748071                 |7qt/z  
    50% >       0.38667627                 )l3Uf&v^f  
    20% >       0.46553746                 >>U>'}@Q  
    10% >       0.50064115 c4Ebre-Oa  
    7EJ2 On  
    最后这个数值是MTF值呢，还是MTF的公差？ HBlk~eZ  
    hFrMOc&  
    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？？？   LP2~UVq  
    #@R0$x  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : 2]!@)fio`  
    90% >       0.20977951                 u]p21)m$x  
    80% >       0.22748071                 9&+]YY CS-  
    50% >       0.38667627                 Jf YgZ\#  
    20% >       0.46553746                 <BR^Dv07U  
    10% >       0.50064115 a4Q@sn;]  
    ....... 9"~ FKMN  
    VotC YJ  
    C}huU  
    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   (7 I|lf e  
    Mode                : Sensitivities $xO8?  
    Sampling            : 2 t"=5MaQk-  
    Nominal Criterion   : 0.54403234 b:==:d:0s  
    Test Wavelength     : 0.6328 5`h$^l/  
    `Ba]i)!  
    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？ _ *f>UW*,  
    cBxGGggB  
    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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