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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 beikzuC  
    *,CJ 3< >  
    B*O/>=_  
    +g7]ga  
    然后添加了默认公差分析，基本没变 N atC}k  
    0Yq_B+IC  
    F*#!hWtb  
    } %?or_f/  
    然后运行分析的结果如下： @fmp2!?6  
    z(Uz<*h8  
    Analysis of Tolerances &x\)] i2f  
    u9v,B$ S  
    File : E:\光学设计资料\zemax练习\f500.ZMX 0lniu=xmQ-  
    Title: zF^H*H  
    Date : TUE JUN 21 2011 BC_<1 c  
    oqh@ (<%  
    Units are Millimeters. qzvht4  
    All changes are computed using linear differences. QnBWZUI  
    ob/<;SrU<  
    Paraxial Focus compensation only. J`0dF<<{[y  
    =J)-#|eZG  
    WARNING: Solves should be removed prior to tolerancing. +{=U!}3|  
    >f Hu  
    Mnemonics: z7XI`MZN^  
    TFRN: Tolerance on curvature in fringes. w@R"g%k-  
    TTHI: Tolerance on thickness. RAu(FJ  
    TSDX: Tolerance on surface decentering in x. Zy9IRZe4U  
    TSDY: Tolerance on surface decentering in y. ~a2|W|?  
    TSTX: Tolerance on surface tilt in x (degrees). b49h @G  
    TSTY: Tolerance on surface tilt in y (degrees). 6p&2 A  
    TIRR: Tolerance on irregularity (fringes). q {   
    TIND: Tolerance on Nd index of refraction. ;Dp*.YJ  
    TEDX: Tolerance on element decentering in x. eQ)*jeD  
    TEDY: Tolerance on element decentering in y. x 2&5zp  
    TETX: Tolerance on element tilt in x (degrees). }jC^&%|  
    TETY: Tolerance on element tilt in y (degrees). jf1GYwuW*  
    mDp8JNJNE  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Ws2?sn#x  
    =&k[qqxg  
    WARNING: Boundary constraints on compensators will be ignored. f,6V#,  
    ^Tj{}<yT  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm $Lbamg->E  
    Mode                : Sensitivities `?[,1   
    Sampling            : 2 %wru)  
    Nominal Criterion   : 0.54403234 6 F39'  
    Test Wavelength     : 0.6328 _]ZlGq!L  
    Oh10X.)i  
    5`e;l$ M`  
    Fields: XY Symmetric Angle in degrees p>J@"?%^  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY bM?29cs  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000  _}JMBIq$  
    gzvgXZ1q"  
    Sensitivity Analysis: x;:jF_  
    ep},~tPZn  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| B0Z>di:  
    Type                      Value      Criterion        Change          Value      Criterion        Change M~`^deU1  
    Fringe tolerance on surface 1  `5(F'o  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 N}#"o  
    Change in Focus                :      -0.000000                            0.000000 sqV~ Dw  
    Fringe tolerance on surface 2 vN_ 8qzWk  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 /%jX=S.5h<  
    Change in Focus                :       0.000000                            0.000000 {0+WVZ4u  
    Fringe tolerance on surface 3 Q;z!]hjBM  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 pZ*%zt]-a  
    Change in Focus                :      -0.000000                            0.000000 -@]b7J?`k  
    Thickness tolerance on surface 1 *CQZ6&^  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 :EYUBtTj  
    Change in Focus                :       0.000000                            0.000000 &M3KJ I0L  
    Thickness tolerance on surface 2 \5j}6Wj  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 4bw4!z9G  
    Change in Focus                :       0.000000                           -0.000000 W?wt$'  
    Decenter X tolerance on surfaces 1 through 3 | X#!5u  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 (xTGt",_Jo  
    Change in Focus                :       0.000000                            0.000000 ^[bFGKE  
    Decenter Y tolerance on surfaces 1 through 3 -w"lW7  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 t\YM Hq<Y  
    Change in Focus                :       0.000000                            0.000000 Nr*X1lJ6  
    Tilt X tolerance on surfaces 1 through 3 (degrees) O x`K7$)  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314  W{Z 7=  
    Change in Focus                :       0.000000                            0.000000 =w`uZ;l$Q  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 7p!ROl^  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 F1-C8V2H  
    Change in Focus                :       0.000000                            0.000000 q o^mp  
    Decenter X tolerance on surface 1 v ?,@e5GZ  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 [.Fq l+  
    Change in Focus                :       0.000000                            0.000000 Np$&8v+en  
    Decenter Y tolerance on surface 1 gzKMGL?%?  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Bv jsl  
    Change in Focus                :       0.000000                            0.000000 *[b>]GXd49  
    Tilt X tolerance on surface (degrees) 1 [\h?mlG?  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 }f}?|&q  
    Change in Focus                :       0.000000                            0.000000 P{QHG 3  
    Tilt Y tolerance on surface (degrees) 1 zAklS 7L  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 PXtF#,roP  
    Change in Focus                :       0.000000                            0.000000 UA~ 4O Q]  
    Decenter X tolerance on surface 2 xz.M'az\  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 6=,zkU*i ^  
    Change in Focus                :       0.000000                            0.000000 ~a_X 7  
    Decenter Y tolerance on surface 2 @b.,pwZF  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ),Yk53G6c  
    Change in Focus                :       0.000000                            0.000000 yVGf[ ~X  
    Tilt X tolerance on surface (degrees) 2 nsVLgTbx  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 H-u SdT  
    Change in Focus                :       0.000000                            0.000000 -Edy ~;_  
    Tilt Y tolerance on surface (degrees) 2 { m{nCl)y  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 MXEI/mDYK  
    Change in Focus                :       0.000000                            0.000000 jpZq]E9`P  
    Decenter X tolerance on surface 3 wWf_d jd  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 =v<A&4  
    Change in Focus                :       0.000000                            0.000000 f##/-NG  
    Decenter Y tolerance on surface 3 oyk&]'>  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 7j=KiiI  
    Change in Focus                :       0.000000                            0.000000 ^=5y;  
    Tilt X tolerance on surface (degrees) 3 )wD/<7;  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 %3t;[$n#  
    Change in Focus                :       0.000000                            0.000000 gCG #?f  
    Tilt Y tolerance on surface (degrees) 3 Kj3Gm>B<y  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 QT%vrXzz  
    Change in Focus                :       0.000000                            0.000000 6H  U*,  
    Irregularity of surface 1 in fringes TKGaGMx6@  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ]' Ho)Q  
    Change in Focus                :       0.000000                            0.000000 ?)k ]Vg.  
    Irregularity of surface 2 in fringes q^zG+FN  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 +O9x8OPHW  
    Change in Focus                :       0.000000                            0.000000 {~Jk(c~I  
    Irregularity of surface 3 in fringes CP%^)LX *  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 &^HVuYa.0  
    Change in Focus                :       0.000000                            0.000000 f$-n %7  
    Index tolerance on surface 1 Lq;iR  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 F |5Au>t  
    Change in Focus                :       0.000000                            0.000000 MY c&  
    Index tolerance on surface 2 ^_P?EJ,)`  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 r`EjD}2d  
    Change in Focus                :       0.000000                           -0.000000 39P55B/o%  
    `0M6<e]C  
    Worst offenders: h:?qd  
    Type                      Value      Criterion        Change :p]e4|R  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 CX\XaM)l  
    TSTY   2             0.20000000     0.35349910    -0.19053324 c@}t@k  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 GQA\JYw|oY  
    TSTX   2             0.20000000     0.35349910    -0.19053324 x lqP%  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ;A7JX:*?y=  
    TSTY   1             0.20000000     0.42678383    -0.11724851 t[X^4bZd  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 cYC^;,C &|  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ?vAhDD5  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ]Z6? m  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ."B{U_P&  
    dc1Zh W4  
    Estimated Performance Changes based upon Root-Sum-Square method: hf2bM `d  
    Nominal MTF                 :     0.54403234 )mBYW}} T  
    Estimated change            :    -0.36299231 =4SXntU!e  
    Estimated MTF               :     0.18104003 =*lBJ-L  
    .f-=gZ* *  
    Compensator Statistics: #Mk: 4  
    Change in back focus: v3M$UiN,:  
    Minimum            :        -0.000000 {GnZ@Q:F  
    Maximum            :         0.000000 g9VY{[ V  
    Mean               :        -0.000000 =MJB:  
    Standard Deviation :         0.000000 'plUs<A  
    `<>QKpAn  
    Monte Carlo Analysis: Khc^q*|C)  
    Number of trials: 20 GxG~J4  
    '#LzQ6Pn  
    Initial Statistics: Normal Distribution ZBY2,%nAo  
    nC%qdzT  
      Trial       Criterion        Change Z/?{{}H+  
          1     0.42804416    -0.11598818 {xov8 M  
    Change in Focus                :      -0.400171 (Y7zaAG]  
          2     0.54384387    -0.00018847 S-gO  
    Change in Focus                :       1.018470 J9]cs?`)  
          3     0.44510003    -0.09893230 Rky]F+J  
    Change in Focus                :      -0.601922 a4 N f\7  
          4     0.18154684    -0.36248550 HNBmq>XDc  
    Change in Focus                :       0.920681 >J S^yVk  
          5     0.28665820    -0.25737414 ZnI15bsDx  
    Change in Focus                :       1.253875 u|Mx}  
          6     0.21263372    -0.33139862 1eshuL  
    Change in Focus                :      -0.903878 (,QWK08  
          7     0.40051424    -0.14351809 v]F4o1ckk  
    Change in Focus                :      -1.354815 1Pw1TO"Z  
          8     0.48754161    -0.05649072 zEW+1-=)+7  
    Change in Focus                :       0.215922 H~Vf;k>  
          9     0.40357468    -0.14045766 9.M'FCd~M  
    Change in Focus                :       0.281783 ~).D\Q\  
         10     0.26315315    -0.28087919 U-fxlg|-C  
    Change in Focus                :      -1.048393 ] T]{VB  
         11     0.26120585    -0.28282649 C7NSmZ  
    Change in Focus                :       1.017611  ]gcOMC  
         12     0.24033815    -0.30369419 &*+$38XE^  
    Change in Focus                :      -0.109292 GK'p$`oJm  
         13     0.37164046    -0.17239188 ?%Nh4+3N>  
    Change in Focus                :      -0.692430 sV%DX5@  
         14     0.48597489    -0.05805744 (M$>*O3SR  
    Change in Focus                :      -0.662040 &Q?@VN i  
         15     0.21462327    -0.32940907 ([< HFc`  
    Change in Focus                :       1.611296 ;]=w6'dP!  
         16     0.43378226    -0.11025008 Wmcd{MOS  
    Change in Focus                :      -0.640081 ]&Y^  
         17     0.39321881    -0.15081353 Z8xB a0  
    Change in Focus                :       0.914906 1r$-Uh  
         18     0.20692530    -0.33710703 G)}[!'<rR  
    Change in Focus                :       0.801607 Ri"hU/H{  
         19     0.51374068    -0.03029165 X=]utn  
    Change in Focus                :       0.947293 Kh$"5dy  
         20     0.38013374    -0.16389860 d8jH?P-"  
    Change in Focus                :       0.667010 #c@&mus  
    s)qrlv5H  
    Number of traceable Monte Carlo files generated: 20 ;Hk3y+&]a  
    _(h=@cv  
    Nominal     0.54403234 04|ZwX$>+  
    Best        0.54384387    Trial     2 8ex;g^e  
    Worst       0.18154684    Trial     4 N?vb^?  
    Mean        0.35770970 7<WS@-2I#  
    Std Dev     0.11156454 oxc;DfJ_  
    ?c RF;!o"  
    g3NUw/]#  
    Compensator Statistics: (=7"zE Cq#  
    Change in back focus: o(jLirnk  
    Minimum            :        -1.354815 ANu>*  
    Maximum            :         1.611296 m- <y|3  
    Mean               :         0.161872 xE?KJ  
    Standard Deviation :         0.869664 +X^GS^mz  
    96V8R<   
    90% >       0.20977951               <>\|hno}  
    80% >       0.22748071               { %X2K  
    50% >       0.38667627               +M I{B="7.  
    20% >       0.46553746               >t cEx(  
    10% >       0.50064115                z f SE7i0  
    BVb^xL  
    End of Run. \]Ah=`  
    ekyCZ8iai  
    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 {\1bWr8!U  
    VR>!Ch  
    uKk#V6t#  
    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 n~yKq"^  
    %(eQ1ir+  
    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                 uZn_*_J!  
    80% >       0.22748071                 ZzE(S  
    50% >       0.38667627                 (}X5*BB&  
    20% >       0.46553746                 a8T9=KY^  
    10% >       0.50064115 _)5E=  
     <Y"RsW9  
    最后这个数值是MTF值呢，还是MTF的公差？ A_@..hX(  
    t!rrYBSCr  
    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？？？   |"LHo  H  
    =_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  : 0#TL$?=|  
    90% >       0.20977951                 L~/,;PHN  
    80% >       0.22748071                 O#;sY`fy_M  
    50% >       0.38667627                 q n-f&R  
    20% >       0.46553746                 G8vDy1`q6  
    10% >       0.50064115 sDNWB_~  
    ....... mmJnE  
    j|pTbOgk%  
    Qqg.z-G%.  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   kiJ=C2'&  
    Mode                : Sensitivities T1$p%yQH  
    Sampling            : 2 rM.Pc?Z  
    Nominal Criterion   : 0.54403234 xz0t8`N oN  
    Test Wavelength     : 0.6328 2iM}YCV  
    kCD] &  
    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？ 'gor*-o:wu  
    !%M,x~H  
    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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