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    [讨论]公差分析结果的疑问 [复制链接]

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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 )q'dX+4=eL  
    ruagJS)+  
    ?5">50  
    ~*EipxhstJ  
    然后添加了默认公差分析，基本没变 bP$e1I3`  
    1W*Qc_5 v1  
    fAStM:  
    a'` i#U  
    然后运行分析的结果如下： }%w;@[@L  
    \KJTR0EB:>  
    Analysis of Tolerances !m\By%(  
    *><j(uz!  
    File : E:\光学设计资料\zemax练习\f500.ZMX / w dvm4  
    Title: Z=-#{{bv  
    Date : TUE JUN 21 2011 N''xdz3Z  
    1<x5{/CZ  
    Units are Millimeters. kN 2mPD/  
    All changes are computed using linear differences. {C`M<2W]  
    }k AE  
    Paraxial Focus compensation only. ?z)2\D  
    ,?U(PEO\f  
    WARNING: Solves should be removed prior to tolerancing. r|Uz?  
    @ ~{TL  
    Mnemonics: 7y&=YCkc7  
    TFRN: Tolerance on curvature in fringes. KX x+J}n  
    TTHI: Tolerance on thickness. ST#)Fl  
    TSDX: Tolerance on surface decentering in x. :6C R~p  
    TSDY: Tolerance on surface decentering in y. :F5(]g 7  
    TSTX: Tolerance on surface tilt in x (degrees). d<?Zaehe\  
    TSTY: Tolerance on surface tilt in y (degrees). *W2] Kxx*  
    TIRR: Tolerance on irregularity (fringes). e{2Za   
    TIND: Tolerance on Nd index of refraction. \zVp8MMf  
    TEDX: Tolerance on element decentering in x. aEQrBs  
    TEDY: Tolerance on element decentering in y. SN[yC  
    TETX: Tolerance on element tilt in x (degrees). ~mH'8K|l  
    TETY: Tolerance on element tilt in y (degrees). 56."&0  
    5Mxl({oI]  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. RU.j[8N$  
    tvJl-&'N  
    WARNING: Boundary constraints on compensators will be ignored. M2:3 k  
    d?U,}tv  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm kdA]gpdw  
    Mode                : Sensitivities .}R'(gN\6  
    Sampling            : 2 S% ptG$Z  
    Nominal Criterion   : 0.54403234 [PrJf"Z "  
    Test Wavelength     : 0.6328 \8Ewl|"N:u  
    +CEt:KQ   
    |L;Hd.l7^*  
    Fields: XY Symmetric Angle in degrees !`U #Pjp.  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Qc9[/4R>  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 P'5Lu  
    4wS!g10}  
    Sensitivity Analysis: |Qpo[E }a  
    w0>5#j q#r  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| $43CNnf3N  
    Type                      Value      Criterion        Change          Value      Criterion        Change ciH TnC  
    Fringe tolerance on surface 1 K/(Z\lL  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 B 4e}%  
    Change in Focus                :      -0.000000                            0.000000 5*"WS $  
    Fringe tolerance on surface 2 u8~5e  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 s0Y7`uD^  
    Change in Focus                :       0.000000                            0.000000 Sr6iQxE  
    Fringe tolerance on surface 3 W.7u6F`  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 |<YF.7r;  
    Change in Focus                :      -0.000000                            0.000000 @$ )C pg  
    Thickness tolerance on surface 1 5',b~Pp  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 H'2o84$  
    Change in Focus                :       0.000000                            0.000000 sGMnm  
    Thickness tolerance on surface 2 )A;jBfr  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 FP6Jf I8  
    Change in Focus                :       0.000000                           -0.000000 0"@p|nAa  
    Decenter X tolerance on surfaces 1 through 3 |Pse=_i  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 d D^?%,a  
    Change in Focus                :       0.000000                            0.000000 ,(yaWd6  
    Decenter Y tolerance on surfaces 1 through 3 e $5s],,n  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 xUs1-O1i  
    Change in Focus                :       0.000000                            0.000000 'xOH~RlE  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ,+_gx.H2j  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 U%2{PbL  
    Change in Focus                :       0.000000                            0.000000 kdm@1x  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 0pe*DbYP5  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 i\L7z)u  
    Change in Focus                :       0.000000                            0.000000 0?g&<q  
    Decenter X tolerance on surface 1 y*sqnzgF  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 'Ya-;5Y]  
    Change in Focus                :       0.000000                            0.000000 41XXL$  
    Decenter Y tolerance on surface 1 o, qBMo^.  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 WoMMAo~  
    Change in Focus                :       0.000000                            0.000000 6}mSA@4&  
    Tilt X tolerance on surface (degrees) 1 sr.!EQ]  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 2f0_Xw_V_  
    Change in Focus                :       0.000000                            0.000000 6[1lK8o  
    Tilt Y tolerance on surface (degrees) 1 Bv=:F5hLG  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 8g 2'[ci$q  
    Change in Focus                :       0.000000                            0.000000 kh*td(pfP9  
    Decenter X tolerance on surface 2 ]O68~+6  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807  ~\+m o  
    Change in Focus                :       0.000000                            0.000000 NEMC  
    Decenter Y tolerance on surface 2 \o!B:Vb<  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 $-]PD`wmY  
    Change in Focus                :       0.000000                            0.000000 M#]URS2h<O  
    Tilt X tolerance on surface (degrees) 2 E'_$?wWn5  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 )RwO2H  
    Change in Focus                :       0.000000                            0.000000 P?U}@U~9  
    Tilt Y tolerance on surface (degrees) 2 fL R.2vJ  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ^F$iD (f  
    Change in Focus                :       0.000000                            0.000000 & MfnH  
    Decenter X tolerance on surface 3 |G>Lud  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 6?jSe<4x  
    Change in Focus                :       0.000000                            0.000000 y +c 3#  
    Decenter Y tolerance on surface 3 ,Z]4`9c  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 xXc3#n  
    Change in Focus                :       0.000000                            0.000000 "/U~j4O  
    Tilt X tolerance on surface (degrees) 3 ;!N_8{ 7r  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 xHdv?69,  
    Change in Focus                :       0.000000                            0.000000 qgLj^{  
    Tilt Y tolerance on surface (degrees) 3 TYr"yZ([  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 0\^K\J ,.  
    Change in Focus                :       0.000000                            0.000000 &l1CE1 9<  
    Irregularity of surface 1 in fringes sr,8Qd 0M  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 W(UrG]J*l  
    Change in Focus                :       0.000000                            0.000000 DC%H(2  
    Irregularity of surface 2 in fringes 2JRX ;s~  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 i/WiSwh:  
    Change in Focus                :       0.000000                            0.000000 P&]PJt5  
    Irregularity of surface 3 in fringes f<~S0[H  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 < {dV=  
    Change in Focus                :       0.000000                            0.000000 ;*EPAC+  
    Index tolerance on surface 1 &8wluOs/5  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 n*fsdo~  
    Change in Focus                :       0.000000                            0.000000 Gj([S17\0:  
    Index tolerance on surface 2 ;;l-E>X0  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 E#cZM>  
    Change in Focus                :       0.000000                           -0.000000 dy*CDRU4  
    |#!P!p}  
    Worst offenders: !;^TW$ G  
    Type                      Value      Criterion        Change QZ51}i  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 6*H F`@(  
    TSTY   2             0.20000000     0.35349910    -0.19053324 -( ,iwF b  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 ]):kMRv  
    TSTX   2             0.20000000     0.35349910    -0.19053324 G_a//[p  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 14v,z;HXj  
    TSTY   1             0.20000000     0.42678383    -0.11724851 uEKa  FRm  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 @z)_m!yV1  
    TSTX   1             0.20000000     0.42678383    -0.11724851 *z A1NH5  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 SLG3u;Ab  
    TSTY   3             0.20000000     0.42861670    -0.11541563 }PDNW  
    5 5T c  
    Estimated Performance Changes based upon Root-Sum-Square method: p94 w0_m@|  
    Nominal MTF                 :     0.54403234 p#95Q  
    Estimated change            :    -0.36299231 "ewB4F[  
    Estimated MTF               :     0.18104003 #e8NF,H5  
    ~?)ST?&  
    Compensator Statistics: h0fbc;l  
    Change in back focus: W=T}hA#`  
    Minimum            :        -0.000000 " Q~-C|x  
    Maximum            :         0.000000 aGz <Yip  
    Mean               :        -0.000000 *Q8d &$ ^  
    Standard Deviation :         0.000000 ?0VLx,kp  
    a_0G4@=T  
    Monte Carlo Analysis: 3;J)&(j0  
    Number of trials: 20 sy|{}NkA!  
    D'823,-).  
    Initial Statistics: Normal Distribution { +%S{=j  
    ?g$dz?^CK&  
      Trial       Criterion        Change :8~*NSEFd  
          1     0.42804416    -0.11598818 $fE$j {  
    Change in Focus                :      -0.400171 L@{5:#-  
          2     0.54384387    -0.00018847 -l!;PV S|  
    Change in Focus                :       1.018470 z;_d?S <*m  
          3     0.44510003    -0.09893230 *?`:=  
    Change in Focus                :      -0.601922 X>#!s Lt  
          4     0.18154684    -0.36248550 3wBc`vJ!  
    Change in Focus                :       0.920681 3'WS6B+  
          5     0.28665820    -0.25737414 H[{ch t h  
    Change in Focus                :       1.253875 @"m? #  
          6     0.21263372    -0.33139862 v?7.)2XcX  
    Change in Focus                :      -0.903878 c!BiGw,;  
          7     0.40051424    -0.14351809 hD>O LoO  
    Change in Focus                :      -1.354815 N*Owfr1 N  
          8     0.48754161    -0.05649072 In)#`E` g.  
    Change in Focus                :       0.215922 "yI)F~A  
          9     0.40357468    -0.14045766 .TURS  
    Change in Focus                :       0.281783 @])qw_  
         10     0.26315315    -0.28087919 oh5fNx  
    Change in Focus                :      -1.048393 {qm(Z+wcmb  
         11     0.26120585    -0.28282649 ^L;`F  
    Change in Focus                :       1.017611 uSs~P%@6|  
         12     0.24033815    -0.30369419 he/UvMu  
    Change in Focus                :      -0.109292 S) [`Bm  
         13     0.37164046    -0.17239188 SZCF db  
    Change in Focus                :      -0.692430 sY t8NsQ  
         14     0.48597489    -0.05805744 @^vVou_  
    Change in Focus                :      -0.662040 JeJc(e  
         15     0.21462327    -0.32940907 mb*L'y2r  
    Change in Focus                :       1.611296 rBP!RSl1  
         16     0.43378226    -0.11025008 ]OoqU-q  
    Change in Focus                :      -0.640081 1e;^Mz B"  
         17     0.39321881    -0.15081353 Zjt3U;Y  
    Change in Focus                :       0.914906 j"E_nV:Qc  
         18     0.20692530    -0.33710703 j0k"iv  
    Change in Focus                :       0.801607 e/WR\B'1  
         19     0.51374068    -0.03029165 "YGs<)S  
    Change in Focus                :       0.947293 &Q^M[X  
         20     0.38013374    -0.16389860 IN!m  
    Change in Focus                :       0.667010 bgd1j,PWbW  
    d;ElqRC&  
    Number of traceable Monte Carlo files generated: 20 G Cx]VN3 &  
    oSt-w{ !  
    Nominal     0.54403234 8KD7t&H  
    Best        0.54384387    Trial     2 74%,v|  
    Worst       0.18154684    Trial     4 3_IuK 6K2  
    Mean        0.35770970 ] w FFGy  
    Std Dev     0.11156454 ;h3uMUCml  
    }abM:O "Y  
    lhx6+w  
    Compensator Statistics: _.Y?BAQ  
    Change in back focus: +GWeu0b(~  
    Minimum            :        -1.354815 "j9,3yJT  
    Maximum            :         1.611296 ocy fU=}X  
    Mean               :         0.161872 kzGD *  
    Standard Deviation :         0.869664 Nl7"|()e  
    >U9*  
    90% >       0.20977951               UGEC_  
    80% >       0.22748071               7vV3"uns  
    50% >       0.38667627               .8CR \-  
    20% >       0.46553746               JPgV7+{b[  
    10% >       0.50064115                4)iSz>  
    g^1M]1.f  
    End of Run.  x9 <cT'  
    )k3zOKZ;  
    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 u9e A"\s  
    H;}V`}c<`  
    zHr1FxD  
    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 l.lXto.6)  
    u Y/Q]N T  
    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                 \Zqgr/.w/  
    80% >       0.22748071                 G#8HY VF  
    50% >       0.38667627                 SPe Se/  
    20% >       0.46553746                 NHUx-IqOX  
    10% >       0.50064115 ^/2n[orl5  
    ~9p*zC3M  
    最后这个数值是MTF值呢，还是MTF的公差？ r~z-l,  
    a [iC!F2  
    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？？？   iQZgs@  
    &|IY=$-  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : d_BECx <\  
    90% >       0.20977951                 +N: K V}K  
    80% >       0.22748071                 hW$B;  
    50% >       0.38667627                 ` /#f8R1g  
    20% >       0.46553746                 tI|?k(D  
    10% >       0.50064115 ,o& &d.  
    ....... \Y_2Z /  
    r j#K5/df  
    %Wkvo-rOq  
    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   l)m\i_r:  
    Mode                : Sensitivities (= } cc  
    Sampling            : 2 I *YO  
    Nominal Criterion   : 0.54403234 Fq>=0 )  
    Test Wavelength     : 0.6328 HpSmB[WF  
    [,Q(~Qb  
    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？ R("g ]  
    T+ey>[  
    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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