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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 PF/K&&9}  
    ugTsI~aE  
    Vu.=,G  
    YT+b{   
    然后添加了默认公差分析，基本没变 */IiL%g4u  
    XjL3Ar*  
    /.7RWy`  
    R`<2DC>h9  
    然后运行分析的结果如下： YdO*5Gb6  
    e7"T37  
    Analysis of Tolerances [G$#jUt/O  
    G1jj:]1  
    File : E:\光学设计资料\zemax练习\f500.ZMX Wx]Xa]-  
    Title: g?"QahH G  
    Date : TUE JUN 21 2011 2mzn{S)nV  
    W=^.s>7G  
    Units are Millimeters. K\9CW%W  
    All changes are computed using linear differences. m_0y]RfG  
    ``jNj1t{}  
    Paraxial Focus compensation only. [k%hl`}  
    YOLzCnI4  
    WARNING: Solves should be removed prior to tolerancing. +U<YM94?  
    $|g1 _;(G  
    Mnemonics: 9F[3B`w  
    TFRN: Tolerance on curvature in fringes. ^wBlQmW7J  
    TTHI: Tolerance on thickness. _-({MX[3k<  
    TSDX: Tolerance on surface decentering in x. Ph""[0n%o  
    TSDY: Tolerance on surface decentering in y. ULz<P  
    TSTX: Tolerance on surface tilt in x (degrees). { DP9^hg  
    TSTY: Tolerance on surface tilt in y (degrees). Ga02Zk  
    TIRR: Tolerance on irregularity (fringes). k)7i^ 1U  
    TIND: Tolerance on Nd index of refraction. 1Z c=QJw@  
    TEDX: Tolerance on element decentering in x. 7P3pjgh  
    TEDY: Tolerance on element decentering in y. l,h`YIy  
    TETX: Tolerance on element tilt in x (degrees). ![K\)7iKo  
    TETY: Tolerance on element tilt in y (degrees). yC1OeO8{  
    "dIWHfQB  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. N,qo/At}R[  
    9#U]?^DJ@  
    WARNING: Boundary constraints on compensators will be ignored. nu+K N,3R"  
    `.pEI q^  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm WeRDaG  
    Mode                : Sensitivities %pq.fZ I   
    Sampling            : 2 &v .S_Ym  
    Nominal Criterion   : 0.54403234 Z(|$[GZP[  
    Test Wavelength     : 0.6328 YSGE@  
    BH {z]a  
    0,RYO :`  
    Fields: XY Symmetric Angle in degrees <e BmCrJ  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY zs]ubJC@  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 h+B7BjA>G  
    69r%b7#  
    Sensitivity Analysis: ~*1>)P8]#  
     CA igV$  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| UAXp;W`  
    Type                      Value      Criterion        Change          Value      Criterion        Change 95#]6*#[4!  
    Fringe tolerance on surface 1 K_L7a>Fr  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 lfM vNv  
    Change in Focus                :      -0.000000                            0.000000 1 jB0gNe  
    Fringe tolerance on surface 2 u|}\Af  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 0'*{BAWx  
    Change in Focus                :       0.000000                            0.000000 4dFr~ {  
    Fringe tolerance on surface 3 HcIJ&".~  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 z{OL+-OY  
    Change in Focus                :      -0.000000                            0.000000 Mu`_^gG  
    Thickness tolerance on surface 1 (LTu=1  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 m]U  
    Change in Focus                :       0.000000                            0.000000 LAk .f  
    Thickness tolerance on surface 2 I= :yfW  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 j%` C  
    Change in Focus                :       0.000000                           -0.000000 _Kaqx"D  
    Decenter X tolerance on surfaces 1 through 3 d)uuA;n  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Vn5%%?]J  
    Change in Focus                :       0.000000                            0.000000 xSN;vrLHR  
    Decenter Y tolerance on surfaces 1 through 3 DI8I'c-P  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 0o$RvxJ  
    Change in Focus                :       0.000000                            0.000000 ?@@$)2_*u  
    Tilt X tolerance on surfaces 1 through 3 (degrees) &M@ .d$<C  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ,X_3#!y  
    Change in Focus                :       0.000000                            0.000000 i695P}J2  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) bTeuOpp  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 geK;r0(f  
    Change in Focus                :       0.000000                            0.000000 .?NfV%vv  
    Decenter X tolerance on surface 1 b&`~%f-  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 19GF%+L ,  
    Change in Focus                :       0.000000                            0.000000 hb*Y-$Zp  
    Decenter Y tolerance on surface 1 :a&M]+!  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 >b\|%=(x!*  
    Change in Focus                :       0.000000                            0.000000 E7h@Y~bNhW  
    Tilt X tolerance on surface (degrees) 1 ' u<IS/w  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 o0No"8DnjH  
    Change in Focus                :       0.000000                            0.000000 *%jXjTA0D  
    Tilt Y tolerance on surface (degrees) 1 BKTTta1mY  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Cw:|(`9  
    Change in Focus                :       0.000000                            0.000000 3"Oipt+  
    Decenter X tolerance on surface 2 e^q^ AP+*  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 _hV34:1F  
    Change in Focus                :       0.000000                            0.000000 L>/$l(  
    Decenter Y tolerance on surface 2 &#C&0f8PnD  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 _`=qc/-0  
    Change in Focus                :       0.000000                            0.000000 y'>9' /&  
    Tilt X tolerance on surface (degrees) 2 }!fIY7gv  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 HHw&BNQG  
    Change in Focus                :       0.000000                            0.000000 j^#\km B  
    Tilt Y tolerance on surface (degrees) 2 ~ a 2A"#f  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 nWCJY:q;5  
    Change in Focus                :       0.000000                            0.000000 rV"3oM]Lo  
    Decenter X tolerance on surface 3 0aR.ct%  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Yqh-U%"'  
    Change in Focus                :       0.000000                            0.000000 :I?lT2+ea  
    Decenter Y tolerance on surface 3 +~F>:v?Rh  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 1^NC=IS9z  
    Change in Focus                :       0.000000                            0.000000 ? XVE {N  
    Tilt X tolerance on surface (degrees) 3 ,O.iOT0=;  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 + rB3\R"d  
    Change in Focus                :       0.000000                            0.000000 nO6UlY  
    Tilt Y tolerance on surface (degrees) 3 kygj" @EX  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 E5S(1Z}]p{  
    Change in Focus                :       0.000000                            0.000000 .DwiIr'  
    Irregularity of surface 1 in fringes i88 5T '  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 `@\FpV[|P  
    Change in Focus                :       0.000000                            0.000000 ![{/V,V]~  
    Irregularity of surface 2 in fringes )ty>{t  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 0?FJ ~pu  
    Change in Focus                :       0.000000                            0.000000 7C2Xy>d~  
    Irregularity of surface 3 in fringes #('R`~  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ok,O/|E}?  
    Change in Focus                :       0.000000                            0.000000 ByoI+n* U  
    Index tolerance on surface 1 -|#/KKF  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 \s8h.xjU  
    Change in Focus                :       0.000000                            0.000000 kQ\l7xd  
    Index tolerance on surface 2 cJm},  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 B;Z _'.i,d  
    Change in Focus                :       0.000000                           -0.000000  !N\_D  
    l8M}82_  
    Worst offenders: 3k_\ xQ  
    Type                      Value      Criterion        Change N>L)2WKFT  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 QN#Lbsd  
    TSTY   2             0.20000000     0.35349910    -0.19053324  ]E :L  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 &>.QDO  
    TSTX   2             0.20000000     0.35349910    -0.19053324 @ajdO/?(Y  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 FLsJ<C~/~  
    TSTY   1             0.20000000     0.42678383    -0.11724851 H,;ZFg/v8  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 KIuj;|!q  
    TSTX   1             0.20000000     0.42678383    -0.11724851 k<fR)o  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 hms Aim9i  
    TSTY   3             0.20000000     0.42861670    -0.11541563 PCDvEbpG  
    !: vQg+S  
    Estimated Performance Changes based upon Root-Sum-Square method: \l[AD-CZPh  
    Nominal MTF                 :     0.54403234 ~P!=fU)  
    Estimated change            :    -0.36299231 e=jtF"&  
    Estimated MTF               :     0.18104003 b<r*EY  
    U b\&k[F  
    Compensator Statistics: ?<0'h{zNy  
    Change in back focus: m=pH G  
    Minimum            :        -0.000000 tg%<@U`7=  
    Maximum            :         0.000000 +N~{6*@uz,  
    Mean               :        -0.000000 DB jUHirK  
    Standard Deviation :         0.000000 i)'u!V  
    b5|l8<\  
    Monte Carlo Analysis: X2~KNw  
    Number of trials: 20 ex|)3|J  
    rw@N=`4P  
    Initial Statistics: Normal Distribution )=N.z6?  
    e \kR/<L  
      Trial       Criterion        Change oe9S$C;$'  
          1     0.42804416    -0.11598818 z&qOu8Jh  
    Change in Focus                :      -0.400171 H?ue!5R#L  
          2     0.54384387    -0.00018847 )5<dmK@  
    Change in Focus                :       1.018470 f .h$jyp(  
          3     0.44510003    -0.09893230 ]/R>nT  
    Change in Focus                :      -0.601922 >NpW$P{'  
          4     0.18154684    -0.36248550 `Sj8IxO  
    Change in Focus                :       0.920681 2<2a3'pG  
          5     0.28665820    -0.25737414 4g.S!-H@R  
    Change in Focus                :       1.253875 5(\[Gke  
          6     0.21263372    -0.33139862 Df1eHa5-7  
    Change in Focus                :      -0.903878 k'[\r>T  
          7     0.40051424    -0.14351809 <(qdxdUp  
    Change in Focus                :      -1.354815 ov>`MCS,v  
          8     0.48754161    -0.05649072 )pey7-P7g5  
    Change in Focus                :       0.215922 =Y3d~~  
          9     0.40357468    -0.14045766 noT}NX%  
    Change in Focus                :       0.281783 wz:w6q  
         10     0.26315315    -0.28087919 b DF_  
    Change in Focus                :      -1.048393 wp/x|AV  
         11     0.26120585    -0.28282649 !\&4,l(  
    Change in Focus                :       1.017611 +hT9V1'-D  
         12     0.24033815    -0.30369419 xJvalb   
    Change in Focus                :      -0.109292 J2`OJsMwWe  
         13     0.37164046    -0.17239188 \>eFs} Y/  
    Change in Focus                :      -0.692430 hn/SS  
         14     0.48597489    -0.05805744 *EtC4sP  
    Change in Focus                :      -0.662040 WN#dR~>  
         15     0.21462327    -0.32940907 Pb :6nH=  
    Change in Focus                :       1.611296 *41WZE  
         16     0.43378226    -0.11025008 jm |zn  
    Change in Focus                :      -0.640081 0`WZ  
         17     0.39321881    -0.15081353 nm,Tng oj  
    Change in Focus                :       0.914906 YGq-AB  
         18     0.20692530    -0.33710703 AWmJm)   
    Change in Focus                :       0.801607 0*u X2*  
         19     0.51374068    -0.03029165 u-dF ~.x  
    Change in Focus                :       0.947293 K*MI8')  
         20     0.38013374    -0.16389860 Y9(BxDP_+Y  
    Change in Focus                :       0.667010 A5dH*< }  
    5g4c1K  
    Number of traceable Monte Carlo files generated: 20 (b1rd  
    [  **F  
    Nominal     0.54403234 yj`xOncE}  
    Best        0.54384387    Trial     2 0k|/]zfb  
    Worst       0.18154684    Trial     4 gkv,Om  
    Mean        0.35770970 <gr2k8m6$  
    Std Dev     0.11156454 uFi[50  
    ~_SVQ7P  
    n~&e>_;(.  
    Compensator Statistics: &[}5yos r  
    Change in back focus: ngaQa-8w  
    Minimum            :        -1.354815 =~QC)y_  
    Maximum            :         1.611296 [6Nzz]yy  
    Mean               :         0.161872 }(if|skau  
    Standard Deviation :         0.869664 ok9G9|HA  
    mZ t:  
    90% >       0.20977951               SVyJUd_  
    80% >       0.22748071               AwGDy +  
    50% >       0.38667627               u]Y NF[]  
    20% >       0.46553746               `?Xt ,  
    10% >       0.50064115                4=n%<U`Z/  
    t~]oJ5%  
    End of Run. x1*@PiO,.  
    04<T2)QgK  
    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 "LH*T  
    _^0)T@  
    W.U|mNJ$  
    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 !HHbd |B_  
    JYWc3o6  
    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                 NeyGIEP  
    80% >       0.22748071                 YB}_zuZ4&  
    50% >       0.38667627                 62LQUl]<  
    20% >       0.46553746                 0IM#T=V  
    10% >       0.50064115 Vkb&' rXw+  
    K\ \U F  
    最后这个数值是MTF值呢，还是MTF的公差？ /_554q  
    BPd]L=,/  
    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？？？   )FqE8oN-  
    2'r8#,)  
    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  : a* IJ)'S  
    90% >       0.20977951                 ld@f:Zali  
    80% >       0.22748071                 dadMwe_l0  
    50% >       0.38667627                 Iwn@%?7  
    20% >       0.46553746                 _1R`xbV  
    10% >       0.50064115 wc,y+C#V  
    ....... q-8  GD7  
    5^d%+*l;q  
    iGU 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   Uq+ _#{2(  
    Mode                : Sensitivities P`%ppkzV6  
    Sampling            : 2 R{rV1j#@!a  
    Nominal Criterion   : 0.54403234 lb6s3b  
    Test Wavelength     : 0.6328 G[^G~U\+!  
    m X1oRhf  
    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？ #&:nkzd  
    E0h p%:  
    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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