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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 2&:z[d}~H  
    8 NNh8k#6  
    Y9#dAI[Gce  
    !0zcS7&P  
    然后添加了默认公差分析，基本没变 3)=ix. wW  
    O_2o/  
    v ))`U,Gm  
    Z D"*fr  
    然后运行分析的结果如下： lbovwj  
    UJL'4 t/  
    Analysis of Tolerances _ti^i\8~  
    lj&\F|-i  
    File : E:\光学设计资料\zemax练习\f500.ZMX |;Jt * _  
    Title: kkHK~(>G  
    Date : TUE JUN 21 2011 6 A]a@,PC  
    Z7y%  
    Units are Millimeters. 6j {ynt  
    All changes are computed using linear differences. h2mHbe43  
    /K!f3o+  
    Paraxial Focus compensation only. R1Rk00Ow:  
    {GCp5  
    WARNING: Solves should be removed prior to tolerancing. I'{Ctc  
    Oz(=%oS  
    Mnemonics: A~>B?Wijqg  
    TFRN: Tolerance on curvature in fringes. 4PS|  
    TTHI: Tolerance on thickness. Wy6a4oY  
    TSDX: Tolerance on surface decentering in x. q$v0sTk0Y  
    TSDY: Tolerance on surface decentering in y. j&S.k  
    TSTX: Tolerance on surface tilt in x (degrees).  1 <T|  
    TSTY: Tolerance on surface tilt in y (degrees). c%b|+4 }x  
    TIRR: Tolerance on irregularity (fringes). J#@+1 Nt  
    TIND: Tolerance on Nd index of refraction. G2!<C-T{2  
    TEDX: Tolerance on element decentering in x. RJDk7{(  
    TEDY: Tolerance on element decentering in y. qu $FpOJ  
    TETX: Tolerance on element tilt in x (degrees). zD8$DG8  
    TETY: Tolerance on element tilt in y (degrees). N,9~J"z  
    #;8VBbc\^  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. B!)9 >  
    17l?li  
    WARNING: Boundary constraints on compensators will be ignored. ESIJ QM-[+  
    @Bkg<  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm @0H0!9'  
    Mode                : Sensitivities K9ih(fh)  
    Sampling            : 2 e9:pS WA-n  
    Nominal Criterion   : 0.54403234 GYJ j$'  
    Test Wavelength     : 0.6328 YT[=o}jS  
    M54czo=l  
    `]19}GK~xo  
    Fields: XY Symmetric Angle in degrees "#8^":,4  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 8?<J,zu@AV  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ]1GyEr:  
    69ycP(  
    Sensitivity Analysis: ^a3 (QKS  
    {uZ|Oog(p  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| Ax@7RJ||  
    Type                      Value      Criterion        Change          Value      Criterion        Change 4C:dkaDq]  
    Fringe tolerance on surface 1  v1?G  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ;&?ITV  
    Change in Focus                :      -0.000000                            0.000000 # E8?2]  
    Fringe tolerance on surface 2 !_c6 `oW  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ?0z/i^I  
    Change in Focus                :       0.000000                            0.000000 TOP,]N/F H  
    Fringe tolerance on surface 3 -g 9CW[  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 _Y6Ezh.  
    Change in Focus                :      -0.000000                            0.000000 6oq^n s-  
    Thickness tolerance on surface 1 1UrkDz?X  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 w}07u5  
    Change in Focus                :       0.000000                            0.000000 _q@lP|  
    Thickness tolerance on surface 2 7:$dl #  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Bv*VNfUm  
    Change in Focus                :       0.000000                           -0.000000 F$:mGyl5_  
    Decenter X tolerance on surfaces 1 through 3 w+\RSqz/  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 9/&1lFKJ  
    Change in Focus                :       0.000000                            0.000000 Y<@_d  
    Decenter Y tolerance on surfaces 1 through 3 _m#TL60m  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 *z~J ]  
    Change in Focus                :       0.000000                            0.000000 <A\g*ld  
    Tilt X tolerance on surfaces 1 through 3 (degrees) n*|8 (fD  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 0U.Ld:  
    Change in Focus                :       0.000000                            0.000000 [P)](8nR[  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) eIP k$j{e  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 |VM=:}s&  
    Change in Focus                :       0.000000                            0.000000 C<^S$  
    Decenter X tolerance on surface 1 &Dp&  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 [a^<2V!vMn  
    Change in Focus                :       0.000000                            0.000000 3],(oQq^  
    Decenter Y tolerance on surface 1 4h}\Kl  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 F*:H&,  
    Change in Focus                :       0.000000                            0.000000 DuQ:82 3b  
    Tilt X tolerance on surface (degrees) 1 6,R<8a;Wn  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 fv>Jn`  
    Change in Focus                :       0.000000                            0.000000 ^ilgd  
    Tilt Y tolerance on surface (degrees) 1 LzB*d  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 dW^#}kN7V  
    Change in Focus                :       0.000000                            0.000000 eo"XHP7ja  
    Decenter X tolerance on surface 2 T Q {8 ee{  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 lrMkp@ f.  
    Change in Focus                :       0.000000                            0.000000 yN#]Q}4  
    Decenter Y tolerance on surface 2 1_n5:  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 4tapQgj24  
    Change in Focus                :       0.000000                            0.000000 `E>o:tff  
    Tilt X tolerance on surface (degrees) 2  GL&rT&  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 7tY~8gQel  
    Change in Focus                :       0.000000                            0.000000 )B5U0iIi  
    Tilt Y tolerance on surface (degrees) 2 TjctK [db@  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 `-rtU  
    Change in Focus                :       0.000000                            0.000000 Tl^)O^/  
    Decenter X tolerance on surface 3 Zk gj_  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ]b^bc2:  
    Change in Focus                :       0.000000                            0.000000 t{ridA}  
    Decenter Y tolerance on surface 3 vZSwX@0  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 kf)s3I/`(  
    Change in Focus                :       0.000000                            0.000000 rV I-Yb  
    Tilt X tolerance on surface (degrees) 3 B8V85R  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 fvDcE]_%H  
    Change in Focus                :       0.000000                            0.000000 -dUXd<=ue  
    Tilt Y tolerance on surface (degrees) 3 u,@x7a,z  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 6lxZo_  
    Change in Focus                :       0.000000                            0.000000 kr]_?B(r  
    Irregularity of surface 1 in fringes D4+OWbf6  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 LkXF~  
    Change in Focus                :       0.000000                            0.000000 @hOY&  
    Irregularity of surface 2 in fringes -n$hm+S  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 @v}M\$N?  
    Change in Focus                :       0.000000                            0.000000 xkz`is77Y@  
    Irregularity of surface 3 in fringes X*:)]p(R  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ?kc,}/4  
    Change in Focus                :       0.000000                            0.000000 4wwRNu*  
    Index tolerance on surface 1 n yd'79~>G  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 W4AFa>h  
    Change in Focus                :       0.000000                            0.000000 'p'nAB''!  
    Index tolerance on surface 2 9kU|?JE  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 55x.Q  
    Change in Focus                :       0.000000                           -0.000000 p:|p?  
    <ZeZq  
    Worst offenders: `q1K%id  
    Type                      Value      Criterion        Change 5CM]-qbf@  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 Ml,87fo  
    TSTY   2             0.20000000     0.35349910    -0.19053324 bd.t|A  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 3ry0.  
    TSTX   2             0.20000000     0.35349910    -0.19053324 zeHs5P8}r  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 |Iq\ZX%q  
    TSTY   1             0.20000000     0.42678383    -0.11724851 zDA;FKZPp  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 WAh{*$Rpl  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ljj}X JQ  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 locf6%2g~  
    TSTY   3             0.20000000     0.42861670    -0.11541563 p4wXsOQ}  
     0GiL(e|  
    Estimated Performance Changes based upon Root-Sum-Square method: @X0$X+]E*8  
    Nominal MTF                 :     0.54403234 <UO'&?G  
    Estimated change            :    -0.36299231 E.rfS$<1  
    Estimated MTF               :     0.18104003 >1d`G%KfG  
    c ]&|.~2&  
    Compensator Statistics: z4c{W~}`  
    Change in back focus: 25`6V>\  
    Minimum            :        -0.000000 09rbu\h  
    Maximum            :         0.000000 &r !*Y&  
    Mean               :        -0.000000 u+vUv~4A6  
    Standard Deviation :         0.000000 l8ZzKb-  
    S4(lC%$|  
    Monte Carlo Analysis: {3=]cLtt  
    Number of trials: 20 _n_|skG  
    v`pIovn  
    Initial Statistics: Normal Distribution @Vac!A??:  
    PaYsn *{})  
      Trial       Criterion        Change $[8GFv  
          1     0.42804416    -0.11598818 c4n]#((%a  
    Change in Focus                :      -0.400171 |Orp:e!  
          2     0.54384387    -0.00018847 2AI~Jm#  
    Change in Focus                :       1.018470 bIahjxd:  
          3     0.44510003    -0.09893230 p_2-(n@  
    Change in Focus                :      -0.601922 V,)bw  
          4     0.18154684    -0.36248550 D>Dch0{H,:  
    Change in Focus                :       0.920681 ey>V^Fj  
          5     0.28665820    -0.25737414 (Y%pk76d  
    Change in Focus                :       1.253875 8DP] C9  
          6     0.21263372    -0.33139862 elf2!  
    Change in Focus                :      -0.903878 rXlJW]i  
          7     0.40051424    -0.14351809 =h9&`iwiu  
    Change in Focus                :      -1.354815 ht%:e?@i  
          8     0.48754161    -0.05649072 zDO`w0N  
    Change in Focus                :       0.215922 [1{uK&$e  
          9     0.40357468    -0.14045766 vEIDf{  
    Change in Focus                :       0.281783 ;y"q uJ'O  
         10     0.26315315    -0.28087919 Ov=^}T4zl  
    Change in Focus                :      -1.048393 9My |G)M6  
         11     0.26120585    -0.28282649 !4B($]t  
    Change in Focus                :       1.017611 t1)Qa(#]  
         12     0.24033815    -0.30369419 *^q%b /f  
    Change in Focus                :      -0.109292 P Yp<eo\  
         13     0.37164046    -0.17239188 4=E9$.3a  
    Change in Focus                :      -0.692430 (\<#fkeH  
         14     0.48597489    -0.05805744 0R%R2p'wG  
    Change in Focus                :      -0.662040  Lx:O Dd  
         15     0.21462327    -0.32940907 WS?"OTH.^\  
    Change in Focus                :       1.611296 y QxzFy  
         16     0.43378226    -0.11025008 Gn_rf"  
    Change in Focus                :      -0.640081 ,KHebv!  
         17     0.39321881    -0.15081353 b-rgiR$cg  
    Change in Focus                :       0.914906 ?|t9@r  
         18     0.20692530    -0.33710703 t  Tky  
    Change in Focus                :       0.801607 ({}JvSn1  
         19     0.51374068    -0.03029165 pO.+hy  
    Change in Focus                :       0.947293 fYuz39#*  
         20     0.38013374    -0.16389860 #PpmR _IX  
    Change in Focus                :       0.667010 xu _:  
    Z2,[-8,Kx  
    Number of traceable Monte Carlo files generated: 20 MwN.Ll  
    ny:4L{)  
    Nominal     0.54403234 O%.c%)4Xo  
    Best        0.54384387    Trial     2 ~a^"VQ5]ac  
    Worst       0.18154684    Trial     4 JC6Bs`=s~  
    Mean        0.35770970 Qyr^\a;k'  
    Std Dev     0.11156454 W9ZfD~(3-  
    i+)9ItZr  
    CnT]u U  
    Compensator Statistics: K(+ ~#$|-~  
    Change in back focus: Ne)H*DT  
    Minimum            :        -1.354815 u"*@k^}(  
    Maximum            :         1.611296 ep- ~;?  
    Mean               :         0.161872 9b8ZOk'9_  
    Standard Deviation :         0.869664 ppjS|l*`  
    0Y8Si^T  
    90% >       0.20977951               Vnu*+  
    80% >       0.22748071               J1Ay^*qRU  
    50% >       0.38667627               DRC2U%[  
    20% >       0.46553746               ([y2x.kd  
    10% >       0.50064115                $y\\ ?  
    Dl2`b">u  
    End of Run. 9 -\.|5;:  
    GS %ACk  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 l cHqg  
    )zzK\I6/EQ  
    u dhj$:t  
    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 N<lO!x1[H*  
    dy^Zlu` f  
    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                 >}& :y{z~  
    80% >       0.22748071                 vkFq/+'U  
    50% >       0.38667627                 'G6g yO/K  
    20% >       0.46553746                 gLyXe,Jp  
    10% >       0.50064115 D%CKkQ<u2  
    ;7jszs.6%  
    最后这个数值是MTF值呢，还是MTF的公差？ yfq Vx$YL  
    zGDLF`  
    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？？？   Q{s9{  
    |\PI"rW  
    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  : yi29+T7j4S  
    90% >       0.20977951                 ]!um}8!}  
    80% >       0.22748071                  z(Y zK  
    50% >       0.38667627                 S)?V;@p6  
    20% >       0.46553746                 f/?uo sS  
    10% >       0.50064115 Y8%bk2  
    ....... 51sn+h<w  
    l;~b:[r  
    S6<z2-y  
    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   at )m*  
    Mode                : Sensitivities >WcOY7  
    Sampling            : 2 6?BV J  
    Nominal Criterion   : 0.54403234 T4JG5  
    Test Wavelength     : 0.6328 +lhjz*0  
    Ib&]1ger#=  
    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？ hU~up a<dD  
    4}r.g0L  
    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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