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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 B?gFFU61  
    zg>)Lq|VsT  
    +Y! P VMF  
    Cm"7f !(#  
    然后添加了默认公差分析,基本没变 )q|a Sd  
    "p@EY|Zv%I  
    pNnZ-R|u  
    VV+gPC  
    然后运行分析的结果如下: p6c&vEsNj  
    q@=3`yQ  
    Analysis of Tolerances 3YO %$  
    /$'|`jKsB  
    File : E:\光学设计资料\zemax练习\f500.ZMX mMOjV_  
    Title: dJ(<zz+;b  
    Date : TUE JUN 21 2011 1=L5=uz1d:  
    p>=i'~lQ6  
    Units are Millimeters. dMw}4c3E  
    All changes are computed using linear differences. I83 _x|$FZ  
    `UD,ne  
    Paraxial Focus compensation only. aN?^vW<  
    H3 >49;`  
    WARNING: Solves should be removed prior to tolerancing.  NIh?2w"\  
    }bZb8hiG  
    Mnemonics: s+<`iH9Hm  
    TFRN: Tolerance on curvature in fringes. M.o H,Kd6  
    TTHI: Tolerance on thickness. "$#<+H>O  
    TSDX: Tolerance on surface decentering in x. y!M# #K*  
    TSDY: Tolerance on surface decentering in y. 1smKU9B2)  
    TSTX: Tolerance on surface tilt in x (degrees). .LI(2lP  
    TSTY: Tolerance on surface tilt in y (degrees). Wl0p-h  
    TIRR: Tolerance on irregularity (fringes). jB"IJ$cD  
    TIND: Tolerance on Nd index of refraction. hX)PdRk#  
    TEDX: Tolerance on element decentering in x. V\nj7Gr:sF  
    TEDY: Tolerance on element decentering in y. U ATF}x   
    TETX: Tolerance on element tilt in x (degrees). %?X6TAtH  
    TETY: Tolerance on element tilt in y (degrees). 83!{?EPE  
    LsxRK5   
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. QAzwNXE+  
    VOSq%hB  
    WARNING: Boundary constraints on compensators will be ignored. gvFs$X*^:  
    ]4onY >  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm -2B3 xIZJ  
    Mode                : Sensitivities S| |OSxZ  
    Sampling            : 2 /hSEm.<  
    Nominal Criterion   : 0.54403234 lOy1vw'  
    Test Wavelength     : 0.6328 Oy_%U*  
    hem>@Bp'V  
    @]YEOk-  
    Fields: XY Symmetric Angle in degrees }2hU7YWt  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY kx,3[qe'S  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 %n^ugm0B  
    0uu)0:  
    Sensitivity Analysis: 1*f*}M  
    jG`,k*eUrJ  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| a0&L,7mu<'  
    Type                      Value      Criterion        Change          Value      Criterion        Change kgHZaQnD  
    Fringe tolerance on surface 1 4Opf[3]  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ]E $bK  
    Change in Focus                :      -0.000000                            0.000000 *?pnTQs^  
    Fringe tolerance on surface 2 cD t|v~  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 9]vy#a#  
    Change in Focus                :       0.000000                            0.000000 g(C/J9J  
    Fringe tolerance on surface 3 ?c<uN~fC=  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 (#BOcx5J]  
    Change in Focus                :      -0.000000                            0.000000 w<u@L  
    Thickness tolerance on surface 1 V an=dz G  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 []G@l. ]W  
    Change in Focus                :       0.000000                            0.000000 K;ocs?rk/  
    Thickness tolerance on surface 2 G 2`hEX%  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 I7HGV(  
    Change in Focus                :       0.000000                           -0.000000 EXsVZg"#  
    Decenter X tolerance on surfaces 1 through 3 2cjbb kq  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 twhT6wz"  
    Change in Focus                :       0.000000                            0.000000 @JPz|  
    Decenter Y tolerance on surfaces 1 through 3 D*/fY=gK  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 S$=caZ?  
    Change in Focus                :       0.000000                            0.000000 .%+anVXS  
    Tilt X tolerance on surfaces 1 through 3 (degrees) h_Ssm{C\  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 \dbaY:(  
    Change in Focus                :       0.000000                            0.000000 i9|}-5ED  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) @KRia{  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 _*cKu>,O  
    Change in Focus                :       0.000000                            0.000000 rZ&li/Z  
    Decenter X tolerance on surface 1 p fR~?jYzm  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 `! xI!Y\  
    Change in Focus                :       0.000000                            0.000000 6rM{r>  
    Decenter Y tolerance on surface 1 nErr&{C  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 .kTOG'K\e  
    Change in Focus                :       0.000000                            0.000000 7x]q>Y8T  
    Tilt X tolerance on surface (degrees) 1 {v"Y!/ [z  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 }USOWsLSt  
    Change in Focus                :       0.000000                            0.000000 MDZPp;\)  
    Tilt Y tolerance on surface (degrees) 1 KGGnypx`  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Uz=o l.E  
    Change in Focus                :       0.000000                            0.000000 rk47 $36X  
    Decenter X tolerance on surface 2 'w=aLu5dY  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 N8DouDq  
    Change in Focus                :       0.000000                            0.000000 E#Ol{6  
    Decenter Y tolerance on surface 2 o;21|[z  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 qDcoccEf  
    Change in Focus                :       0.000000                            0.000000 ?zf3AZ9  
    Tilt X tolerance on surface (degrees) 2 Res4;C  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 BSL+Gjj~}  
    Change in Focus                :       0.000000                            0.000000 ??P %.  
    Tilt Y tolerance on surface (degrees) 2 IBUFXzl  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 >2F9Tz,3  
    Change in Focus                :       0.000000                            0.000000 #ro$$I;  
    Decenter X tolerance on surface 3 nvA7eTO6C  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 &Xc=PQ:I  
    Change in Focus                :       0.000000                            0.000000 hkRqtpYK  
    Decenter Y tolerance on surface 3 x=-(p}0o;<  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 96S$Y~G# &  
    Change in Focus                :       0.000000                            0.000000 ,g4T>7`&U%  
    Tilt X tolerance on surface (degrees) 3 v(6[z)A0  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 lbGPy'h<rt  
    Change in Focus                :       0.000000                            0.000000 &- !$qUli  
    Tilt Y tolerance on surface (degrees) 3 mM~&mAa+Z  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 E@6gTx*  
    Change in Focus                :       0.000000                            0.000000 b|*+!v:I>T  
    Irregularity of surface 1 in fringes F8#MI G   
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 1]Cd fj6@  
    Change in Focus                :       0.000000                            0.000000 D2J)qCK1)  
    Irregularity of surface 2 in fringes J*_^~t  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 \6bvk _  
    Change in Focus                :       0.000000                            0.000000  6@"E*-z$  
    Irregularity of surface 3 in fringes JDW/Mc1bh  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ^/cqE[V~,  
    Change in Focus                :       0.000000                            0.000000 M`7[hr  
    Index tolerance on surface 1 ?B@3A)a  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 pNZ3vTs6  
    Change in Focus                :       0.000000                            0.000000 !/ dH"h  
    Index tolerance on surface 2 s8'!1rHd  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ko|M2\  
    Change in Focus                :       0.000000                           -0.000000 IwOL1\'T4  
    k!G{#(++&6  
    Worst offenders: `GlOl-  
    Type                      Value      Criterion        Change 72/ bC  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 4"\x#  
    TSTY   2             0.20000000     0.35349910    -0.19053324 K7C!ZXw~  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 {NcJL< ;tS  
    TSTX   2             0.20000000     0.35349910    -0.19053324 :hcOceNz  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 w `+.F;}s  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Ups0Xg&{  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 F/,6Jh  
    TSTX   1             0.20000000     0.42678383    -0.11724851 $5\!ws<cZ  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 KS1udH^Zc  
    TSTY   3             0.20000000     0.42861670    -0.11541563 g-,lY|a  
    yMzy!b Ky  
    Estimated Performance Changes based upon Root-Sum-Square method: ;#+I"Ow  
    Nominal MTF                 :     0.54403234 )T?BO  
    Estimated change            :    -0.36299231 (D6ks5Uui  
    Estimated MTF               :     0.18104003 >DbG )0|  
    W7(5z  
    Compensator Statistics: $at\aJ  
    Change in back focus: & P%#  
    Minimum            :        -0.000000 }D`ZWTjDay  
    Maximum            :         0.000000 `Y+ R9bd  
    Mean               :        -0.000000 [z"oi'"fQ  
    Standard Deviation :         0.000000 r\}?HS06  
    (kyRx+gA  
    Monte Carlo Analysis: :4x6dYNU  
    Number of trials: 20 F_i"v5#  
    G$)tp^%]  
    Initial Statistics: Normal Distribution ZoYllk   
    1f 1D^|  
      Trial       Criterion        Change BHS@whj  
          1     0.42804416    -0.11598818 ,Z :2ba  
    Change in Focus                :      -0.400171 Q[%G`;e#  
          2     0.54384387    -0.00018847 S,ud pQ7  
    Change in Focus                :       1.018470 j^v<rCzc (  
          3     0.44510003    -0.09893230 /?0|hi<_$  
    Change in Focus                :      -0.601922 B.smQt  
          4     0.18154684    -0.36248550 ,_/\pX0  
    Change in Focus                :       0.920681 Nf2lw]-G4  
          5     0.28665820    -0.25737414 2yD ?f8P4  
    Change in Focus                :       1.253875 Z-pZyDz  
          6     0.21263372    -0.33139862 1|s` z  
    Change in Focus                :      -0.903878 +?*.Emzl@  
          7     0.40051424    -0.14351809 TKbfZw  
    Change in Focus                :      -1.354815 __1Hx?f  
          8     0.48754161    -0.05649072 T+t7/PwC;  
    Change in Focus                :       0.215922 90,UhNz9D  
          9     0.40357468    -0.14045766 UUM:*X  
    Change in Focus                :       0.281783 4~ &X]/_'  
         10     0.26315315    -0.28087919 p&0 G  
    Change in Focus                :      -1.048393 /J Y6S  
         11     0.26120585    -0.28282649 >WJQxL4  
    Change in Focus                :       1.017611 Sn 7 h$  
         12     0.24033815    -0.30369419 :oYSvK7>  
    Change in Focus                :      -0.109292 U#sv.r/L}3  
         13     0.37164046    -0.17239188 ( Rp5g}b  
    Change in Focus                :      -0.692430 p2fzbBt  
         14     0.48597489    -0.05805744 )7-mALyW  
    Change in Focus                :      -0.662040 1K)9fMr]  
         15     0.21462327    -0.32940907 .QA1'_9  
    Change in Focus                :       1.611296 =h?%<2t9<  
         16     0.43378226    -0.11025008 /UY'E<wBx  
    Change in Focus                :      -0.640081 Jk:ZO|'Z  
         17     0.39321881    -0.15081353 'PW/0k  
    Change in Focus                :       0.914906 cG3tn&AXi  
         18     0.20692530    -0.33710703 h/y0Q~|/d  
    Change in Focus                :       0.801607 M0e&GR8<z>  
         19     0.51374068    -0.03029165 s<:) ;-tL  
    Change in Focus                :       0.947293 (KfQ'B+  
         20     0.38013374    -0.16389860 x%T^:R  
    Change in Focus                :       0.667010 0R0_UvsXU  
    kp!(e0n  
    Number of traceable Monte Carlo files generated: 20 EFu$>Z4  
    u*oP:!s  
    Nominal     0.54403234 M?<iQxtyb}  
    Best        0.54384387    Trial     2 2#CN:b]+  
    Worst       0.18154684    Trial     4 7TU77  
    Mean        0.35770970 q1 BpE8  
    Std Dev     0.11156454 m(5LXH Jnv  
    %m/5! "  
    h Y *^rY'  
    Compensator Statistics: 1N { >00  
    Change in back focus: pN)>c,  
    Minimum            :        -1.354815 . S;o#Zw*R  
    Maximum            :         1.611296 ^)$T`  
    Mean               :         0.161872 R!\._m?\h  
    Standard Deviation :         0.869664 z,@R jaX  
    .lI.I  
    90% >       0.20977951               EpCNp FQT<  
    80% >       0.22748071               :9q|<[Y^  
    50% >       0.38667627               p_fsEY  
    20% >       0.46553746               mZ3Z8q}%P  
    10% >       0.50064115                !wKNYe  
    OMab!  
    End of Run. Fa </  
    JuRWR0@`  
    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 .Rb1%1bdc  
    ;7JyL|2  
    Q'j00/K  
    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 ~X'hRNFx~  
    3.=o}!  
    不吝赐教
     
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    离线sansummer
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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?
    离线sansummer
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 HLq2a vs\  
    80% >       0.22748071                 o'YK\L!p  
    50% >       0.38667627                 >[P`$XkXd4  
    20% >       0.46553746                 id1gK(F8H  
    10% >       0.50064115 =Zaw>p*H  
    T@r%~z  
    最后这个数值是MTF值呢,还是MTF的公差? 'W~6-c9y  
    @4]dv> Z  
    也就是说,这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951???   /86PqKU(P  
    9 tCF m.m  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : !sh>`AF  
    90% >       0.20977951                 hixG/%aO  
    80% >       0.22748071                 PsyXt5Dk  
    50% >       0.38667627                 m4'x>Z  
    20% >       0.46553746                 }x?2txuu  
    10% >       0.50064115 .=/TT|eMS  
    ....... pLsWy&G  
    [Qn$i/ ` J  
    Ydh+iLjhx  
    这些数值都是MTF值
    离线天地大同
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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   P] qL&_  
    Mode                : Sensitivities Q<fDtf}  
    Sampling            : 2 |)b:@q3k+n  
    Nominal Criterion   : 0.54403234 oO&R3zA1d  
    Test Wavelength     : 0.6328 9{XV=a v  
    ) 0|X];sD  
    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? &a?k1R>  
    KU*XRZu)  
    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?
    离线天地大同
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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