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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 \|X 1  
    =4q5KI  
    ui8$F "I*  
    gm]q<~eMW  
    然后添加了默认公差分析，基本没变 k7:ISj J  
    bL<H$DB6  
    ShRMzU  
    XKp(31])  
    然后运行分析的结果如下： @I Y<i5(  
    9J%O$sF  
    Analysis of Tolerances UV%o&tv|<  
    zk70D_}L  
    File : E:\光学设计资料\zemax练习\f500.ZMX xz@*V>QT  
    Title: miBCq l@x  
    Date : TUE JUN 21 2011  `&a8Wv  
    M97+YMY)  
    Units are Millimeters. n"iaE  
    All changes are computed using linear differences. ;N!n06S3  
    hDJ+Rk@  
    Paraxial Focus compensation only. unYPvrd  
    x?6^EB|@  
    WARNING: Solves should be removed prior to tolerancing. lKQjG+YF  
    :;#^gv H  
    Mnemonics: k!qOE\%B  
    TFRN: Tolerance on curvature in fringes. tF*Sg{:bCa  
    TTHI: Tolerance on thickness. ( K-7z  
    TSDX: Tolerance on surface decentering in x. :'t"kS  
    TSDY: Tolerance on surface decentering in y. ~&0lWa  
    TSTX: Tolerance on surface tilt in x (degrees). mFpj@=^_G  
    TSTY: Tolerance on surface tilt in y (degrees). iw(`7(*  
    TIRR: Tolerance on irregularity (fringes). N+R{&v7=F%  
    TIND: Tolerance on Nd index of refraction. /jaO\t'q  
    TEDX: Tolerance on element decentering in x. `h'Ab63  
    TEDY: Tolerance on element decentering in y. /ORK9 g  
    TETX: Tolerance on element tilt in x (degrees). ][z!};  
    TETY: Tolerance on element tilt in y (degrees). mV7_O//  
    C>l (4*S  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. '6WZi|(a  
    ;(g"=9e  
    WARNING: Boundary constraints on compensators will be ignored. f:t5`c.  
    >&Ye(3w&  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Exi#@-  
    Mode                : Sensitivities T/L\|_:'  
    Sampling            : 2 @ bvWqMa  
    Nominal Criterion   : 0.54403234 Q Na*Y@i  
    Test Wavelength     : 0.6328 tr 8Q{  
    >Y3zO2Cr  
    W70BRXe04D  
    Fields: XY Symmetric Angle in degrees iee`Yg!EOH  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY -RThd"  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ,;= S\  
    H'2o84$  
    Sensitivity Analysis: sGMnm  
    )A;jBfr  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| FP6Jf I8  
    Type                      Value      Criterion        Change          Value      Criterion        Change 0"@p|nAa  
    Fringe tolerance on surface 1 z_&T>ME  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 G~lnX^46"  
    Change in Focus                :      -0.000000                            0.000000 %eu_Pr6X  
    Fringe tolerance on surface 2 Z!?T&:  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 2Q/V D,yU  
    Change in Focus                :       0.000000                            0.000000 toox`|  
    Fringe tolerance on surface 3 dfeN_0` -  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Bm^8"SSN  
    Change in Focus                :      -0.000000                            0.000000 Gm\jboef]  
    Thickness tolerance on surface 1 No/D"S#  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 6:TA8w|  
    Change in Focus                :       0.000000                            0.000000 4,6?sTuX  
    Thickness tolerance on surface 2 oW/H8q<wY  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 1UH_"Q03  
    Change in Focus                :       0.000000                           -0.000000 49#?I:l  
    Decenter X tolerance on surfaces 1 through 3 b@1";+(27  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 -uK@2} NZ  
    Change in Focus                :       0.000000                            0.000000 6;\Tps;A  
    Decenter Y tolerance on surfaces 1 through 3 +m6acu)N.  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 wMiRN2\^  
    Change in Focus                :       0.000000                            0.000000 "8yDqm  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 52Q~` t7F  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 s[/)v:  
    Change in Focus                :       0.000000                            0.000000 %aJ8wYj*  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) |fWR[\NU  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 m3b?f B  
    Change in Focus                :       0.000000                            0.000000 B\7 80p<  
    Decenter X tolerance on surface 1 h6gtO$A|p=  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 `XwKCI  
    Change in Focus                :       0.000000                            0.000000 fPsUIlI/A  
    Decenter Y tolerance on surface 1 [%7oq;^J  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 .`N&,&H  
    Change in Focus                :       0.000000                            0.000000 oth=#hfU^  
    Tilt X tolerance on surface (degrees) 1 Ru`7Xd.  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ez*O'U  
    Change in Focus                :       0.000000                            0.000000 kv3V|  
    Tilt Y tolerance on surface (degrees) 1 ~D Ta% J  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ;ZLfb n3\  
    Change in Focus                :       0.000000                            0.000000 "C%* 'k  
    Decenter X tolerance on surface 2 Q92hI"  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 NIOWjhi[Jn  
    Change in Focus                :       0.000000                            0.000000 A v%'#1w<"  
    Decenter Y tolerance on surface 2 Q\v^3u2;m`  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 GI*2*m!u  
    Change in Focus                :       0.000000                            0.000000 c:G0=5  
    Tilt X tolerance on surface (degrees) 2 {nmBIk2v  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 !xZ`()D#  
    Change in Focus                :       0.000000                            0.000000 N]@e7P'9F  
    Tilt Y tolerance on surface (degrees) 2 ig,v6lqhM  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 E@$HO_;&  
    Change in Focus                :       0.000000                            0.000000 s av  
    Decenter X tolerance on surface 3 )SFy Q  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 <)9E.h  
    Change in Focus                :       0.000000                            0.000000 R a?0jcSQ$  
    Decenter Y tolerance on surface 3 Q" an6ht|  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 HTUY|^^D  
    Change in Focus                :       0.000000                            0.000000 < {dV=  
    Tilt X tolerance on surface (degrees) 3 ;*EPAC+  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 &8wluOs/5  
    Change in Focus                :       0.000000                            0.000000 n*fsdo~  
    Tilt Y tolerance on surface (degrees) 3 Gj([S17\0:  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ;;l-E>X0  
    Change in Focus                :       0.000000                            0.000000 #AUz.WHD  
    Irregularity of surface 1 in fringes  ~/kx  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ['n;e:*  
    Change in Focus                :       0.000000                            0.000000 a7Rg!%r  
    Irregularity of surface 2 in fringes q!zsGf {  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 'xY@ I`x  
    Change in Focus                :       0.000000                            0.000000 WKPuIE:  
    Irregularity of surface 3 in fringes 5hbQUF ,Q  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 b}#ay2AR  
    Change in Focus                :       0.000000                            0.000000 (t)a u  
    Index tolerance on surface 1 DR6 OR B7  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Tb6c]?'U  
    Change in Focus                :       0.000000                            0.000000 ${%*O}$  
    Index tolerance on surface 2 UA}oOteG  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 F[S Ys/M  
    Change in Focus                :       0.000000                           -0.000000 & ]/Z~Vt  
    v(tr:[V  
    Worst offenders: Pa !r*(M)C  
    Type                      Value      Criterion        Change (GdL(H#IL  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 6- @n$5W0  
    TSTY   2             0.20000000     0.35349910    -0.19053324 C7[CfcPA  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 )FrXD3 p  
    TSTX   2             0.20000000     0.35349910    -0.19053324 %v(\;&@  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 "~lGSWcU  
    TSTY   1             0.20000000     0.42678383    -0.11724851 hVcV_  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 [!E8C9Q#!  
    TSTX   1             0.20000000     0.42678383    -0.11724851 -Fj:^q:@u  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 m mj6YQ0a  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ;tF7 GjEp  
    G6b\4}E  
    Estimated Performance Changes based upon Root-Sum-Square method: w oqP&8a  
    Nominal MTF                 :     0.54403234 c|'hs   
    Estimated change            :    -0.36299231 pPdOw K#  
    Estimated MTF               :     0.18104003 V0h  
    $fE$j {  
    Compensator Statistics: L@{5:#-  
    Change in back focus: -l!;PV S|  
    Minimum            :        -0.000000 z;_d?S <*m  
    Maximum            :         0.000000 *?`:=  
    Mean               :        -0.000000 X>#!s Lt  
    Standard Deviation :         0.000000 3wBc`vJ!  
    3'WS6B+  
    Monte Carlo Analysis: H[{ch t h  
    Number of trials: 20 @"m? #  
    Iz#h:O  
    Initial Statistics: Normal Distribution :hp=>^$Y  
    P2`!)teN  
      Trial       Criterion        Change VlVd"jW  
          1     0.42804416    -0.11598818 dB`YvKr#  
    Change in Focus                :      -0.400171 &zF1&J58z  
          2     0.54384387    -0.00018847 2EOt.4cP  
    Change in Focus                :       1.018470 K/y#hP  
          3     0.44510003    -0.09893230 'lU9*e9  
    Change in Focus                :      -0.601922 IdlW[h3`[  
          4     0.18154684    -0.36248550 Iky'x[p,D  
    Change in Focus                :       0.920681 $siiG|)C1  
          5     0.28665820    -0.25737414 g=;c*{  
    Change in Focus                :       1.253875 yS#LT3>l  
          6     0.21263372    -0.33139862 (l.`g@(L  
    Change in Focus                :      -0.903878 pt;kN&A^  
          7     0.40051424    -0.14351809 ) tGC&l+?/  
    Change in Focus                :      -1.354815 i>S /W!F  
          8     0.48754161    -0.05649072 P(W7,GD,k  
    Change in Focus                :       0.215922 =^P<D&%q  
          9     0.40357468    -0.14045766 a<[@p  
    Change in Focus                :       0.281783 Ywf.,V  
         10     0.26315315    -0.28087919 ;&|ja]r  
    Change in Focus                :      -1.048393 hIw<gb4J%  
         11     0.26120585    -0.28282649 ~<pGiW'w5  
    Change in Focus                :       1.017611 5M~\'\;  
         12     0.24033815    -0.30369419 <dzE5]%\  
    Change in Focus                :      -0.109292 >sP-)ZeuU[  
         13     0.37164046    -0.17239188 tLpDIA_8  
    Change in Focus                :      -0.692430 `?Wak =]g  
         14     0.48597489    -0.05805744 B_[^<2_  
    Change in Focus                :      -0.662040 H;<hmbN?d  
         15     0.21462327    -0.32940907 ' hL\xf{  
    Change in Focus                :       1.611296 6ZVJ2xs[%  
         16     0.43378226    -0.11025008 +gTnq")wnI  
    Change in Focus                :      -0.640081 aF$HF;-y  
         17     0.39321881    -0.15081353 Z^AACKME  
    Change in Focus                :       0.914906 Q^8C*ekfg!  
         18     0.20692530    -0.33710703 CCX\"-C  
    Change in Focus                :       0.801607 6tM CpSJ  
         19     0.51374068    -0.03029165 #5T+P8  
    Change in Focus                :       0.947293 )L`0VTw'M  
         20     0.38013374    -0.16389860 !h2ZrT9 _  
    Change in Focus                :       0.667010 A1p;Ye>o~  
    OFCOMM  
    Number of traceable Monte Carlo files generated: 20 kzGD *  
    Nl7"|()e  
    Nominal     0.54403234 >U9*  
    Best        0.54384387    Trial     2 pHY~_^B4&  
    Worst       0.18154684    Trial     4 O'" &9  
    Mean        0.35770970 l?B\TA^  
    Std Dev     0.11156454 '1=t{Rw  
    :a}hd^;[%8  
    GLL,  
    Compensator Statistics: *;O$=PE  
    Change in back focus: dapQ5JT/  
    Minimum            :        -1.354815 w1aa5-aF  
    Maximum            :         1.611296 J(S.iTD  
    Mean               :         0.161872 A[Juv]X  
    Standard Deviation :         0.869664 q?&vV`PG5  
    W z3y+I/&  
    90% >       0.20977951               ow ~(k5k:  
    80% >       0.22748071               F`U%xn,  
    50% >       0.38667627               ^l ~i>:V  
    20% >       0.46553746               R1X9  
    10% >       0.50064115                f>5{SoM  
    1Af~6jz  
    End of Run. j"/i+r{"E  
    sW#6B+5_k  
    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 '>Y"s|  
    ]~)FMWQz-  
    zO2Z\E'% .  
    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 I1 j-Q8  
    #Z}\;a{vZ  
    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                 Z[yQKy  
    80% >       0.22748071                 QSW62]=vV  
    50% >       0.38667627                 {%'(IJ|5z  
    20% >       0.46553746                 _0 USe  
    10% >       0.50064115 DHW;*A-  
    cV_nYcLkz  
    最后这个数值是MTF值呢，还是MTF的公差？ <K%qaf  
    3lqR(Hh3  
    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？？？   mZDrvTI'  
    > F&Wuf  
    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  : @Tmqw(n{  
    90% >       0.20977951                 2d+IROA  
    80% >       0.22748071                 ,lm.~%}P*  
    50% >       0.38667627                 :HhLc'1Jw  
    20% >       0.46553746                 p1t9s N,  
    10% >       0.50064115 0 6 1@N=p8  
    ....... *,1^{mb  
    ]D&$k P(  
    fx|$(D@9  
    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   m<00 5_Z0Q  
    Mode                : Sensitivities 4A0R07"  
    Sampling            : 2 w#k'RuOw5  
    Nominal Criterion   : 0.54403234 :av6*&+  
    Test Wavelength     : 0.6328 R^P~iAO  
    kV"';a  
    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？ x, a[ p\1  
    u*`acmS>N  
    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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