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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 +$#ytvDy  
    d?)Ic1][  
    rbI 7 3'  
    'k/:3?R  
    然后添加了默认公差分析，基本没变 X08[,P#I  
    co{i~['u  
    _Q7]Dw/w\  
    >)VWXv0  
    然后运行分析的结果如下： TbgIr  
    a|Wrc)UR  
    Analysis of Tolerances \6;b.&%w2  
    R/l/GNm  
    File : E:\光学设计资料\zemax练习\f500.ZMX ]fJ9.Js  
    Title: Ted!*HKlB  
    Date : TUE JUN 21 2011 wQojmmQ  
    *kt%.wPJ  
    Units are Millimeters. ! l"*DR  
    All changes are computed using linear differences. o_cAelI[!  
    Pa"[&{:  
    Paraxial Focus compensation only. iw I}  
    ek`6 Uf  
    WARNING: Solves should be removed prior to tolerancing. +{WZpP},v  
    :.SwO<j  
    Mnemonics: )Tw A?kj  
    TFRN: Tolerance on curvature in fringes. 2C#b-Y 1~N  
    TTHI: Tolerance on thickness. Xuj=V?5  
    TSDX: Tolerance on surface decentering in x.  !qTP  
    TSDY: Tolerance on surface decentering in y. Ie4X k  
    TSTX: Tolerance on surface tilt in x (degrees). pXK-,7-  
    TSTY: Tolerance on surface tilt in y (degrees). `$yi18F  
    TIRR: Tolerance on irregularity (fringes). >[4CQK`U  
    TIND: Tolerance on Nd index of refraction. NUX$)c  
    TEDX: Tolerance on element decentering in x. O[z-K K<  
    TEDY: Tolerance on element decentering in y. wSG!.Ejc7  
    TETX: Tolerance on element tilt in x (degrees). x{1S!A^  
    TETY: Tolerance on element tilt in y (degrees). /<CgSW}  
    pI}6AAs}Z  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. r(I&`kF<  
    o= &/ ;X  
    WARNING: Boundary constraints on compensators will be ignored. =qS\+  
    \6vr)1~N>  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm PF0AU T  
    Mode                : Sensitivities ||'A9  
    Sampling            : 2 h:4F?'W  
    Nominal Criterion   : 0.54403234 L^??*XEUJ  
    Test Wavelength     : 0.6328 jB3Rue:+g  
    sg4TX?I   
    Qp~3DUM  
    Fields: XY Symmetric Angle in degrees /v7o!D1G  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY C@rIyBj1g  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 b.QL\$a &  
    [cw>; \J  
    Sensitivity Analysis: Pk )H(,  
    %dq |)r  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| %B04|Q  
    Type                      Value      Criterion        Change          Value      Criterion        Change ; e)vk|  
    Fringe tolerance on surface 1 ^) 5*?8#  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 6kdcFcV-]  
    Change in Focus                :      -0.000000                            0.000000 \Z$MH`_nu  
    Fringe tolerance on surface 2 ~~{+?v6B]  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ""x>-j4  
    Change in Focus                :       0.000000                            0.000000 =90)=Pxd  
    Fringe tolerance on surface 3 .Tc?PmN  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ONm-zRx|  
    Change in Focus                :      -0.000000                            0.000000 lh*!f$2 ~  
    Thickness tolerance on surface 1 S=g E'"LT  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 @8U8>'zDE  
    Change in Focus                :       0.000000                            0.000000 (?#"S67  
    Thickness tolerance on surface 2 E\*M4n\!  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 UiH5iZ<r;  
    Change in Focus                :       0.000000                           -0.000000 j&"GE':Y  
    Decenter X tolerance on surfaces 1 through 3 PQ(/1v   
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 $(&+NJ$U$  
    Change in Focus                :       0.000000                            0.000000 30Udba+{]p  
    Decenter Y tolerance on surfaces 1 through 3 o3a%u(   
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ?xb2jZ/0X  
    Change in Focus                :       0.000000                            0.000000 #hh7fE'9  
    Tilt X tolerance on surfaces 1 through 3 (degrees) YL9Tsw  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 gv/yfiA?  
    Change in Focus                :       0.000000                            0.000000 i?|b:lcV  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) oE$zOS&2  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 *M+CA_I(  
    Change in Focus                :       0.000000                            0.000000 (zIF2qY  
    Decenter X tolerance on surface 1 BaOPtBYA:  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 \\$wg   
    Change in Focus                :       0.000000                            0.000000 >3)AO04=;  
    Decenter Y tolerance on surface 1 I0(nRu<  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 2[5z6oG  
    Change in Focus                :       0.000000                            0.000000 f^ 6da6Z  
    Tilt X tolerance on surface (degrees) 1 7hfa?Mcz  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 jn#Ok@tZ  
    Change in Focus                :       0.000000                            0.000000 vff`Xh>k(  
    Tilt Y tolerance on surface (degrees) 1 XMm (D!6  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 `(pe#Xxn  
    Change in Focus                :       0.000000                            0.000000 S")*~)N@  
    Decenter X tolerance on surface 2 X.JPM{]  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 x<h-F  
    Change in Focus                :       0.000000                            0.000000 0A.9<&Lod  
    Decenter Y tolerance on surface 2 fg~9{1B  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 t$5)6zG  
    Change in Focus                :       0.000000                            0.000000 1iIag}?p  
    Tilt X tolerance on surface (degrees) 2 IC@-`S#F  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 6%2\bI.#  
    Change in Focus                :       0.000000                            0.000000 _dynqF8*  
    Tilt Y tolerance on surface (degrees) 2 vm`\0VGSW  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 * AjJf)o  
    Change in Focus                :       0.000000                            0.000000 zqAp7:  
    Decenter X tolerance on surface 3 @-5V~itW  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 OQa;EBO  
    Change in Focus                :       0.000000                            0.000000 j#JE4(&  
    Decenter Y tolerance on surface 3 rc)vVv  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 3M<T}>  
    Change in Focus                :       0.000000                            0.000000 y/yg-\/XF  
    Tilt X tolerance on surface (degrees) 3 zHW}A `Rz  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 (S#nA:E  
    Change in Focus                :       0.000000                            0.000000 L$<(HQQ J8  
    Tilt Y tolerance on surface (degrees) 3 BSbi.@@tp  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 zoI0oA  
    Change in Focus                :       0.000000                            0.000000 u!K5jqP  
    Irregularity of surface 1 in fringes 0I \l_St@  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 8lcB.M  
    Change in Focus                :       0.000000                            0.000000 i>n)T  
    Irregularity of surface 2 in fringes SYmiDR  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 <zE~N~;  
    Change in Focus                :       0.000000                            0.000000 rytaC(  
    Irregularity of surface 3 in fringes d ,!sZ&v  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 'Xw> ?[BB  
    Change in Focus                :       0.000000                            0.000000 %44Z7  
    Index tolerance on surface 1 ;H:+w\?8f$  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 !K319 eE  
    Change in Focus                :       0.000000                            0.000000 3 h~U)mg  
    Index tolerance on surface 2 f))'8  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 qD/X%`>Q  
    Change in Focus                :       0.000000                           -0.000000 FeAMt  
    /6Vn WrN_  
    Worst offenders: G'qGsKf\  
    Type                      Value      Criterion        Change 8F*"z^vD=  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 )zoO#tX  
    TSTY   2             0.20000000     0.35349910    -0.19053324 k%S;N{Qh@  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 .qjdi`v  
    TSTX   2             0.20000000     0.35349910    -0.19053324 9?~K"+-SI  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 8rwXbYx x  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Ivue"_i;!  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 :P1/kYg  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ]fgYO+  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 d/4kF  
    TSTY   3             0.20000000     0.42861670    -0.11541563 +W-,74A  
    e//q`?ys  
    Estimated Performance Changes based upon Root-Sum-Square method: L% cr `<~  
    Nominal MTF                 :     0.54403234 bBC!fh!L"  
    Estimated change            :    -0.36299231 x\m?*5p  
    Estimated MTF               :     0.18104003 Hlg Q0qb  
    \X?GzQkr  
    Compensator Statistics: ;0!rq^JG  
    Change in back focus: (i*;V0  
    Minimum            :        -0.000000 gU^2;C  
    Maximum            :         0.000000 T)QT_ST.9  
    Mean               :        -0.000000 d^Jf(NE0Yo  
    Standard Deviation :         0.000000 TT0~41&l  
    oy) 'wb~  
    Monte Carlo Analysis: *7yu&a8  
    Number of trials: 20 1tNmiAu  
    ]1XJQW@gF  
    Initial Statistics: Normal Distribution =!RlU)w  
    zU7/P|Dw+  
      Trial       Criterion        Change bz=B&YR  
          1     0.42804416    -0.11598818 *A,h ^  
    Change in Focus                :      -0.400171 oq>8  
          2     0.54384387    -0.00018847 BP7&w d  
    Change in Focus                :       1.018470 EZ.|6oug\  
          3     0.44510003    -0.09893230 9Fkzt=(E~  
    Change in Focus                :      -0.601922 %z_PEqRj  
          4     0.18154684    -0.36248550 H#LlxD)q  
    Change in Focus                :       0.920681 hu G]kv3F:  
          5     0.28665820    -0.25737414 ^nS'3g^"  
    Change in Focus                :       1.253875 A{!D7kwTz~  
          6     0.21263372    -0.33139862 ftqi>^i  
    Change in Focus                :      -0.903878 f0^DsP  
          7     0.40051424    -0.14351809 &mM[q 'V  
    Change in Focus                :      -1.354815 "s6O|=^*  
          8     0.48754161    -0.05649072 !/6`< eQ `  
    Change in Focus                :       0.215922 w<3g1n7R  
          9     0.40357468    -0.14045766 rdFeDZo&Z)  
    Change in Focus                :       0.281783 Ier0F7]I  
         10     0.26315315    -0.28087919 l~/g^lN  
    Change in Focus                :      -1.048393 "uz}`G~O  
         11     0.26120585    -0.28282649 xlqh,?'>W  
    Change in Focus                :       1.017611 oWZbfR9R  
         12     0.24033815    -0.30369419 kO]],Vy`  
    Change in Focus                :      -0.109292 Sc<%$ Gd  
         13     0.37164046    -0.17239188 G|Du/XYh  
    Change in Focus                :      -0.692430 pN[G?A  
         14     0.48597489    -0.05805744 -N')LY  
    Change in Focus                :      -0.662040 8h&Ed=gi  
         15     0.21462327    -0.32940907 Kw%n;GFl'  
    Change in Focus                :       1.611296 Vp;^_,  
         16     0.43378226    -0.11025008 -!dL <  
    Change in Focus                :      -0.640081 (W7cQ>  
         17     0.39321881    -0.15081353 {%S>!RA  
    Change in Focus                :       0.914906 +%$'( t s  
         18     0.20692530    -0.33710703 dv+)U9at  
    Change in Focus                :       0.801607 k+au42:r  
         19     0.51374068    -0.03029165 L}bS"=B[&W  
    Change in Focus                :       0.947293 g4BEo'  
         20     0.38013374    -0.16389860 ,cR=W|6cQm  
    Change in Focus                :       0.667010 Mh04O@"  
    \X5>HPB  
    Number of traceable Monte Carlo files generated: 20 ;:JTb2xbb  
    Z:l.{3J$  
    Nominal     0.54403234 E6iUa'  
    Best        0.54384387    Trial     2 VO|2  
    Worst       0.18154684    Trial     4 QRs!B!Fn0  
    Mean        0.35770970 WXqrx*?*+  
    Std Dev     0.11156454 U"} ml  
    MLV_I4o  
    5*=a*nD11  
    Compensator Statistics: ,Db+c3  
    Change in back focus: c;w%R8z  
    Minimum            :        -1.354815 6~Y-bn"%D5  
    Maximum            :         1.611296 b?#k  
    Mean               :         0.161872  '&/"_  
    Standard Deviation :         0.869664 qRMH[F$`  
    S/j~1q_|G  
    90% >       0.20977951               Gld|w=qr  
    80% >       0.22748071               3lc'(ts %  
    50% >       0.38667627               B;A^5~b  
    20% >       0.46553746               2| u'J  
    10% >       0.50064115                ;H5H7ezV  
    5b9v`6Kq  
    End of Run. 41y}n{4n8  
    )Yvf9dl  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 C' C'@?]  
    " &B/v"nj  
    >Z k$q~'+  
    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 pqPhtWi%PJ  
    ~c7}eTJd"  
    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                 :N5R.@9  
    80% >       0.22748071                 L !:}  
    50% >       0.38667627                 D OiL3i"H  
    20% >       0.46553746                 xS]=WO*  
    10% >       0.50064115 hb7H- Z2  
    %{s<h6{R  
    最后这个数值是MTF值呢，还是MTF的公差？ " cx\P,<  
    +4EQ9-  
    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？？？   Kf D8S  
    I:[^><?E  
    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  : I29aja  
    90% >       0.20977951                 |Et8FR3[m  
    80% >       0.22748071                 CHxu%- g  
    50% >       0.38667627                 K)!yOa'fH  
    20% >       0.46553746                 a'3|EWS ?  
    10% >       0.50064115 oT9dMhx8  
    ....... :Y/>] tS4  
    T\Zf`.mt  
    @ Gxnrh6  
    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   VTM*=5|c   
    Mode                : Sensitivities }q8 |t3  
    Sampling            : 2 32#|BBY  
    Nominal Criterion   : 0.54403234 hDPZj#(c  
    Test Wavelength     : 0.6328 _SVIY@K|/  
    ~f:y^`+Q[  
    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？ s2IjZF{  
    lla?;^,  
    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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