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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  .mPg0  
    &qRJceT(  
    6fwY$K\X  
    iV hJH4  
    然后添加了默认公差分析，基本没变 h^M^7S  
    7& 6Y  
    f=I:DkR  
    2c:f<>r0y  
    然后运行分析的结果如下： ]}LGbv"`A  
    Ze ? g  
    Analysis of Tolerances ~ FUa: KYD  
    K t `  
    File : E:\光学设计资料\zemax练习\f500.ZMX !k<:k "7  
    Title: n`L,]dco  
    Date : TUE JUN 21 2011 i2`0|8mw'  
    ^M|K;jt>  
    Units are Millimeters. 3s(Ia^  
    All changes are computed using linear differences. }*kJ-q&0  
    X~RH^VYv  
    Paraxial Focus compensation only. _Bk U+=|J  
    b3U6;]|x  
    WARNING: Solves should be removed prior to tolerancing. *gu8-7'  
    'IQsve7cI  
    Mnemonics: HDS"F.l5  
    TFRN: Tolerance on curvature in fringes. o&-L0]i|  
    TTHI: Tolerance on thickness. R^P_{_I*"  
    TSDX: Tolerance on surface decentering in x. ?~F. /  
    TSDY: Tolerance on surface decentering in y. /EFq#+6  
    TSTX: Tolerance on surface tilt in x (degrees). ^7u#30,}3~  
    TSTY: Tolerance on surface tilt in y (degrees). Lko`F$5X  
    TIRR: Tolerance on irregularity (fringes). 8tQ|-l *  
    TIND: Tolerance on Nd index of refraction. .3wY\W8Dr-  
    TEDX: Tolerance on element decentering in x. Iql5T#K+  
    TEDY: Tolerance on element decentering in y. 0BTLcEqgZ  
    TETX: Tolerance on element tilt in x (degrees). ^M Ey,  
    TETY: Tolerance on element tilt in y (degrees). |}S1o0v{(a  
    8wIK:   
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 0Nr\2|  
    6Rz[?-mkLO  
    WARNING: Boundary constraints on compensators will be ignored. r nBOj#N  
    R&So4},B  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm DO^y;y>  
    Mode                : Sensitivities aRwnRii  
    Sampling            : 2 Ew4 g'A:H  
    Nominal Criterion   : 0.54403234 C\Ayv)S #2  
    Test Wavelength     : 0.6328 Hj~O49%j&  
    Lq0 4T0  
    u O'/|[`8  
    Fields: XY Symmetric Angle in degrees \P?A7vuhLs  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY A1_ J sS  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 Y @}FL;3  
    -p8e  
    Sensitivity Analysis: nem@sB;v#  
    #IX&9 aFB}  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| :p-Y7CSSu  
    Type                      Value      Criterion        Change          Value      Criterion        Change xo~g78jm7,  
    Fringe tolerance on surface 1 u!1/B4!'O  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 /`+7_=-  
    Change in Focus                :      -0.000000                            0.000000 pFIecca w  
    Fringe tolerance on surface 2 M#M?1(O/NE  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 \A(5;ZnuD  
    Change in Focus                :       0.000000                            0.000000 pP\h6b+B  
    Fringe tolerance on surface 3 M+aEma  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 v2J0u:#,  
    Change in Focus                :      -0.000000                            0.000000 RvW.@#EH0  
    Thickness tolerance on surface 1 4vqNule  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 {L9yhYw  
    Change in Focus                :       0.000000                            0.000000 4}-#mBV]/  
    Thickness tolerance on surface 2 AMT slo  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 sv=H~wce  
    Change in Focus                :       0.000000                           -0.000000 o#e7,O  
    Decenter X tolerance on surfaces 1 through 3 r~oSP^e'  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 'h}7YP, w  
    Change in Focus                :       0.000000                            0.000000 OCW+?B;  
    Decenter Y tolerance on surfaces 1 through 3 B||c(ue  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 x!?Z *v@I  
    Change in Focus                :       0.000000                            0.000000 t!jwY/T  
    Tilt X tolerance on surfaces 1 through 3 (degrees) I:t^S.,  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ;r!\-]5$  
    Change in Focus                :       0.000000                            0.000000 w3bIb$12  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) <SQ(~xYi  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 6V;:+"BkJ  
    Change in Focus                :       0.000000                            0.000000 },PBqWe  
    Decenter X tolerance on surface 1 PU+1=%'V  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 AZ wa4n}"  
    Change in Focus                :       0.000000                            0.000000 s.y}U5Ty?P  
    Decenter Y tolerance on surface 1 Dl\d_:+  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 sqG`"O4W  
    Change in Focus                :       0.000000                            0.000000 D5` (}  
    Tilt X tolerance on surface (degrees) 1 BKA]G)G7u!  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 q\H7& w  
    Change in Focus                :       0.000000                            0.000000 k7Oy5$##  
    Tilt Y tolerance on surface (degrees) 1 3bts7<K=  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 k4R4YI"jV  
    Change in Focus                :       0.000000                            0.000000 }17bV, t  
    Decenter X tolerance on surface 2 fuyl/bx}  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 -eL'KO5'  
    Change in Focus                :       0.000000                            0.000000 QUp?i  
    Decenter Y tolerance on surface 2 GP]TnQ<*;  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 }ecs Gw  
    Change in Focus                :       0.000000                            0.000000 )ddsyFGW  
    Tilt X tolerance on surface (degrees) 2 UUm |@  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 xjrlc9  
    Change in Focus                :       0.000000                            0.000000 <gcmsiB|  
    Tilt Y tolerance on surface (degrees) 2 la702)N{  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 b~as64  
    Change in Focus                :       0.000000                            0.000000 \`gEu{  
    Decenter X tolerance on surface 3 +H}e)1^ I  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 sVoR?peQ  
    Change in Focus                :       0.000000                            0.000000 %EoH4LzT  
    Decenter Y tolerance on surface 3 } J(1V!EA  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ~ B]jV$=  
    Change in Focus                :       0.000000                            0.000000 ?9S+Cj`  
    Tilt X tolerance on surface (degrees) 3 8uA<G/Q;  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 N 8}lt  
    Change in Focus                :       0.000000                            0.000000 VN+\>j-  
    Tilt Y tolerance on surface (degrees) 3 f".q9{+p,  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 %M6 c0d[9-  
    Change in Focus                :       0.000000                            0.000000 +-P<CCvWz  
    Irregularity of surface 1 in fringes -<d(  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ?cxr%`E  
    Change in Focus                :       0.000000                            0.000000 D1ZC&B_}-  
    Irregularity of surface 2 in fringes k_O-5{  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 m&cvU>lC  
    Change in Focus                :       0.000000                            0.000000 %,;gP.dh7  
    Irregularity of surface 3 in fringes 97]4 :Zv  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 nNs .,J)  
    Change in Focus                :       0.000000                            0.000000 os_WYQ4>j  
    Index tolerance on surface 1 yM|g|;U  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 9A<0zt  
    Change in Focus                :       0.000000                            0.000000 {? 2;0}3?;  
    Index tolerance on surface 2 |h D~6a  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 @T/qd>T o  
    Change in Focus                :       0.000000                           -0.000000 HTN$ >QTI  
    ?\M)WDO  
    Worst offenders: ifHU|0_=  
    Type                      Value      Criterion        Change _XWnS9  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 idz9YpW  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Ge1duRGa  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 {\Ys@FF  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Z>h{` X\2  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 \-d '9b?  
    TSTY   1             0.20000000     0.42678383    -0.11724851 m2ox8(sd  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 gi 5XP]z  
    TSTX   1             0.20000000     0.42678383    -0.11724851 oX*b<d{\N  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ,P~QS  
    TSTY   3             0.20000000     0.42861670    -0.11541563 22'vm~2E  
    r},lu=em  
    Estimated Performance Changes based upon Root-Sum-Square method: b?>VPuyBb  
    Nominal MTF                 :     0.54403234 j"0rkN3$J  
    Estimated change            :    -0.36299231 H\d;QN9Q;  
    Estimated MTF               :     0.18104003 5f{wJb2  
    !^-OfqIHfV  
    Compensator Statistics: sy=dY@W^  
    Change in back focus: S%{lJYwXt  
    Minimum            :        -0.000000 zQt1;bo  
    Maximum            :         0.000000 z g)|rm  
    Mean               :        -0.000000 qZP:@r"  
    Standard Deviation :         0.000000 D=JlA~tS>  
    `xGT_0&ck  
    Monte Carlo Analysis: UtPwWB_YV  
    Number of trials: 20 MU*It"@}2  
    ovSH}h!  
    Initial Statistics: Normal Distribution @x*.5:[  
    p$XnOh  
      Trial       Criterion        Change DEcGFRgN~  
          1     0.42804416    -0.11598818 S,VyUe4P4  
    Change in Focus                :      -0.400171 <irpmRQr  
          2     0.54384387    -0.00018847 RB *P0  
    Change in Focus                :       1.018470 e]Puv)S>{8  
          3     0.44510003    -0.09893230 ]y}Zi/zh  
    Change in Focus                :      -0.601922 k3#wLJ  
          4     0.18154684    -0.36248550 y%FYXwR{  
    Change in Focus                :       0.920681 }\ EL;sT  
          5     0.28665820    -0.25737414 lj Y  
    Change in Focus                :       1.253875 ,k\/]9  
          6     0.21263372    -0.33139862 Zq^^|[)bA  
    Change in Focus                :      -0.903878 vv!Bo~L1,  
          7     0.40051424    -0.14351809 A^t"MYX@  
    Change in Focus                :      -1.354815 B9AbKK$`  
          8     0.48754161    -0.05649072 $8=(I2&TW  
    Change in Focus                :       0.215922 Pm~,Ky&Hl  
          9     0.40357468    -0.14045766 l -XnB   
    Change in Focus                :       0.281783 wzg i @i  
         10     0.26315315    -0.28087919 <347 C{q  
    Change in Focus                :      -1.048393 m+p4Mc%u  
         11     0.26120585    -0.28282649 y&h~Oa?,;  
    Change in Focus                :       1.017611 +hZ] B<$  
         12     0.24033815    -0.30369419 o;E (Kj  
    Change in Focus                :      -0.109292 DVbYShB  
         13     0.37164046    -0.17239188 &hO$4qtN  
    Change in Focus                :      -0.692430 *XHj)DC;  
         14     0.48597489    -0.05805744 $@68=  
    Change in Focus                :      -0.662040 RZ<.\N (M  
         15     0.21462327    -0.32940907 \_?yzgf  
    Change in Focus                :       1.611296 @ }ZGY^  
         16     0.43378226    -0.11025008 t6j-?c('  
    Change in Focus                :      -0.640081 3mybG%39  
         17     0.39321881    -0.15081353 vu44!c@  
    Change in Focus                :       0.914906 ?~{r f:Y  
         18     0.20692530    -0.33710703 tD865gi  
    Change in Focus                :       0.801607 1]HHe*'Z  
         19     0.51374068    -0.03029165 y)IGTW o  
    Change in Focus                :       0.947293 % /~os2R  
         20     0.38013374    -0.16389860 bKTqX[=  
    Change in Focus                :       0.667010 2lF WW(  
    C"k2<IE  
    Number of traceable Monte Carlo files generated: 20 GpScc'a7  
    SCqu,  
    Nominal     0.54403234 HhzkMJR8  
    Best        0.54384387    Trial     2 6V+V zDo  
    Worst       0.18154684    Trial     4 2m|Eoc&M_  
    Mean        0.35770970 \MF3CK@/  
    Std Dev     0.11156454 6^WiZ^~  
    6Q?BwD+>  
    9fCiLlI  
    Compensator Statistics: dvC0 <*V  
    Change in back focus: H^ESA s6  
    Minimum            :        -1.354815 7? +5%7-  
    Maximum            :         1.611296 er#8D6*  
    Mean               :         0.161872 KsZ@kTs  
    Standard Deviation :         0.869664 /5&3WG&<u  
    O 0Vn";Q 4  
    90% >       0.20977951               8.:B=A  
    80% >       0.22748071               +Kxe ymwr2  
    50% >       0.38667627               Z3OZPxm  
    20% >       0.46553746               y?[5jL|Ue  
    10% >       0.50064115                MX"A@p~H  
    u}Lc|_ea`  
    End of Run. b0!*mrF]6  
    +oE7~64LL  
    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 Iq^~  
    wgC??Be;ut  
    xhw8#  
    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 f+Pg1Q0zI  
    (xI)"{   
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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                 9,Crmbw8  
    80% >       0.22748071                 .FfwY 'V  
    50% >       0.38667627                 d/ 'A\"o+  
    20% >       0.46553746                 |r)>bY7  
    10% >       0.50064115 3{N p 9y.  
    6xDl=*&%  
    最后这个数值是MTF值呢，还是MTF的公差？ sRo<4U0M;l  
    rw}5nv  
    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？？？   v*C+U$_3\1  
    *:fw6mnJ#  
    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  : uz#eO|z@o  
    90% >       0.20977951                 xj00eL  
    80% >       0.22748071                 [-:<z?(n4  
    50% >       0.38667627                 iuU3*yyn  
    20% >       0.46553746                 QE{;M  
    10% >       0.50064115 ffoo^1}1  
    ....... W:+2We@  
    gQk#l\w _  
    jN'fm  
    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   [nPzh Xs  
    Mode                : Sensitivities Y5A~iGp8E  
    Sampling            : 2 B,m$ur#$  
    Nominal Criterion   : 0.54403234 3EW f|6RI  
    Test Wavelength     : 0.6328 I ;11j  
    Zxxy1Fl#.[  
    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？ t ]I(98pY  
    pv?17(w(\  
    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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