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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 3 oF45`3FV  
    vYwYQG  
    '\l"   
    hgYZOwQ  
    然后添加了默认公差分析，基本没变 dyz2.ZY~2  
    W#9BNKL  
    + [iQLM?zo  
    uw>Ba %5  
    然后运行分析的结果如下： SE@LYeC}dE  
    %aG5F}S2~  
    Analysis of Tolerances k^3>Y%^1  
    *'Sd/%8{  
    File : E:\光学设计资料\zemax练习\f500.ZMX }NHaCG[,  
    Title: -u6bAQ  
    Date : TUE JUN 21 2011 Qf~vZtJ+J  
    1OGx>J6  
    Units are Millimeters. cvn@/qBq*t  
    All changes are computed using linear differences. bn|I> e  
    :%l TU  
    Paraxial Focus compensation only. a@_4PWzF:  
    z`.<U{5  
    WARNING: Solves should be removed prior to tolerancing. 7Od -I*bt  
    !j9t*2m[  
    Mnemonics: NW~N}5T  
    TFRN: Tolerance on curvature in fringes. 7-bd9uVK  
    TTHI: Tolerance on thickness. |kyX3~  
    TSDX: Tolerance on surface decentering in x. v [wb~uw\  
    TSDY: Tolerance on surface decentering in y. >8~.wXyoC  
    TSTX: Tolerance on surface tilt in x (degrees). tqz3zIQ  
    TSTY: Tolerance on surface tilt in y (degrees). 8 }I$'x  
    TIRR: Tolerance on irregularity (fringes). qzYwt]GNS  
    TIND: Tolerance on Nd index of refraction. [;n9:Qxf  
    TEDX: Tolerance on element decentering in x. VACQ+  
    TEDY: Tolerance on element decentering in y. lp.ldajN  
    TETX: Tolerance on element tilt in x (degrees). nD_GL  
    TETY: Tolerance on element tilt in y (degrees). F%@A6'c  
    g#"zQvON  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. KoOz#,()  
    vLv@&lMW  
    WARNING: Boundary constraints on compensators will be ignored. Xpr?Kgz  
    4`4kfiS$  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm B{QBzx1L9c  
    Mode                : Sensitivities JA %J$d  
    Sampling            : 2 Y@;CF  
    Nominal Criterion   : 0.54403234 8H%;WU9-  
    Test Wavelength     : 0.6328 p)KheLiZ  
    D#_3^Kiawj  
    5#HW2"7  
    Fields: XY Symmetric Angle in degrees "IZa!eUW  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 0\X\izQ5  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 NxkGOAOE  
    QVv#fy1"6  
    Sensitivity Analysis: 1$xNUsD2  
    ,1y@Z 5wy  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ;@mS^ik")$  
    Type                      Value      Criterion        Change          Value      Criterion        Change QJZK|*  
    Fringe tolerance on surface 1 .iYJr;9`d  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 R4[N:~Z$|  
    Change in Focus                :      -0.000000                            0.000000 AiwOc+R  
    Fringe tolerance on surface 2 [@&m4 7  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 OC_+("N  
    Change in Focus                :       0.000000                            0.000000 `fA@hK   
    Fringe tolerance on surface 3 3OrczJ=[UF  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 h){0rX@:&  
    Change in Focus                :      -0.000000                            0.000000 /fKx} }g)  
    Thickness tolerance on surface 1 C/q'=:H;  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 &xU[E!2H%  
    Change in Focus                :       0.000000                            0.000000 &yct!YOB2  
    Thickness tolerance on surface 2 R   
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 +! ]zA4x  
    Change in Focus                :       0.000000                           -0.000000 J! AgBF N4  
    Decenter X tolerance on surfaces 1 through 3 :,3C 0T3r  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 3$jT*OyG#  
    Change in Focus                :       0.000000                            0.000000 Q0)#8Rcm  
    Decenter Y tolerance on surfaces 1 through 3 ~IY%  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 B~'vCuE  
    Change in Focus                :       0.000000                            0.000000 |hKDvH  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ?U%qPv:  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 |'e^QpU5  
    Change in Focus                :       0.000000                            0.000000 r7RIRg_  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) `Syl:rU~y@  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 #%pI(,o=  
    Change in Focus                :       0.000000                            0.000000 Q1T$k$n  
    Decenter X tolerance on surface 1 &9.Cl;I  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 MS nG3]{z  
    Change in Focus                :       0.000000                            0.000000 sSr&:BOsi  
    Decenter Y tolerance on surface 1 C1V|0h u  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 2+RUTOv/d  
    Change in Focus                :       0.000000                            0.000000 kYM~d07 V  
    Tilt X tolerance on surface (degrees) 1 `jDTzhO~  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 _jvxc'6  
    Change in Focus                :       0.000000                            0.000000 o5u3Fjz3  
    Tilt Y tolerance on surface (degrees) 1 3#W T.4k  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 DMAIM|h  
    Change in Focus                :       0.000000                            0.000000 Bm:98? [  
    Decenter X tolerance on surface 2 X1:V<,}"  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 0XOp3  
    Change in Focus                :       0.000000                            0.000000 nB_?ckj,  
    Decenter Y tolerance on surface 2 Hf%@3X  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 mbKZJ{|4s  
    Change in Focus                :       0.000000                            0.000000 ^8]NxV@l  
    Tilt X tolerance on surface (degrees) 2 5A,K6f@:g  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 el&0}`K  
    Change in Focus                :       0.000000                            0.000000 %gInje  
    Tilt Y tolerance on surface (degrees) 2 hE &xE;  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Ve8=b0&Y#j  
    Change in Focus                :       0.000000                            0.000000 aJSO4W)P  
    Decenter X tolerance on surface 3 zU,9T  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 n#cC+>*>+  
    Change in Focus                :       0.000000                            0.000000 $6qh| >z.  
    Decenter Y tolerance on surface 3 2ElJbN#  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 xn?a. 3b'  
    Change in Focus                :       0.000000                            0.000000 FW;m\vu  
    Tilt X tolerance on surface (degrees) 3 R$EW4]j  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 jxP;>K7O  
    Change in Focus                :       0.000000                            0.000000 zp6C3RG(  
    Tilt Y tolerance on surface (degrees) 3 0!D4pvlt  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 {k(g]#pP  
    Change in Focus                :       0.000000                            0.000000 &]Q@7Nl7:l  
    Irregularity of surface 1 in fringes <c*FCblv  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 {WJm  
    Change in Focus                :       0.000000                            0.000000 l\f*d6o  
    Irregularity of surface 2 in fringes 3t.l5m Rg5  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 *HU &4E\a  
    Change in Focus                :       0.000000                            0.000000 {5A2&  
    Irregularity of surface 3 in fringes x!hh"x  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 s'3 s^Dd  
    Change in Focus                :       0.000000                            0.000000 @MoKWfc  
    Index tolerance on surface 1 IWk4&yHUAu  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 (|F*vP'  
    Change in Focus                :       0.000000                            0.000000 e*sfPHt  
    Index tolerance on surface 2 f<GhkDPm>?  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Upx G@b  
    Change in Focus                :       0.000000                           -0.000000 C:GK,?!Jn'  
    V[mT<Lc  
    Worst offenders: C=-=_>Q,L<  
    Type                      Value      Criterion        Change N[?N5~jG  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 x-XD.qh7Hr  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ( B!uy`  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 c7?_46 J  
    TSTX   2             0.20000000     0.35349910    -0.19053324 #+JG(^%B  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 _,kj:R.  
    TSTY   1             0.20000000     0.42678383    -0.11724851 CZ8KEBl  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 CJtcn_.F  
    TSTX   1             0.20000000     0.42678383    -0.11724851 MlcR"gl*  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 Nv$ R\'3  
    TSTY   3             0.20000000     0.42861670    -0.11541563 hC:n5]K  
    r+'qd)  
    Estimated Performance Changes based upon Root-Sum-Square method: XFg 9P}"  
    Nominal MTF                 :     0.54403234 Ltv]pH}YN  
    Estimated change            :    -0.36299231 0*VWzH   
    Estimated MTF               :     0.18104003 # q~e^A b  
    T _r:4JS  
    Compensator Statistics: U] ~$g}!)  
    Change in back focus: JELT ou  
    Minimum            :        -0.000000 rUwZMli  
    Maximum            :         0.000000 t9nqu!);  
    Mean               :        -0.000000 :v0U|\j8/V  
    Standard Deviation :         0.000000 ,Z aRy$?  
    s:?SF.  
    Monte Carlo Analysis: H-WJp<_  
    Number of trials: 20 `-.%^eIp  
    ?U%QG5/>  
    Initial Statistics: Normal Distribution ^/)^7\@  
    ~Io7]  
      Trial       Criterion        Change 2$9odD<r  
          1     0.42804416    -0.11598818 9 eR-  
    Change in Focus                :      -0.400171 w2 ;eh]k  
          2     0.54384387    -0.00018847 bW$,?8(  
    Change in Focus                :       1.018470 iMAfJ-oN  
          3     0.44510003    -0.09893230 'g6\CZw(#  
    Change in Focus                :      -0.601922 \4&fxe  
          4     0.18154684    -0.36248550 kh!FR u h  
    Change in Focus                :       0.920681 }bs+-K  
          5     0.28665820    -0.25737414 Az9?Ra;U  
    Change in Focus                :       1.253875 63^O|y\W8  
          6     0.21263372    -0.33139862 1=r#d-\tR  
    Change in Focus                :      -0.903878 ?TM ,Q  
          7     0.40051424    -0.14351809 H[{F'c[e  
    Change in Focus                :      -1.354815 UXeN8  
          8     0.48754161    -0.05649072 f6EZ( v  
    Change in Focus                :       0.215922 B%" d~5Y  
          9     0.40357468    -0.14045766 Bu#E9hJFvA  
    Change in Focus                :       0.281783 2X.r%&!1M  
         10     0.26315315    -0.28087919 {^ qcx8  
    Change in Focus                :      -1.048393 +:8fC$vVfC  
         11     0.26120585    -0.28282649 *e<[SZzYZ  
    Change in Focus                :       1.017611 gGvz(R: y  
         12     0.24033815    -0.30369419 SlgN&{ Bk  
    Change in Focus                :      -0.109292 DD7h^-x  
         13     0.37164046    -0.17239188 T,7Y7c/3V  
    Change in Focus                :      -0.692430 1uG"f<TsR  
         14     0.48597489    -0.05805744 7zA'ri3w  
    Change in Focus                :      -0.662040 dOa+(fMe  
         15     0.21462327    -0.32940907 'ZT^PV \  
    Change in Focus                :       1.611296 46$._h P  
         16     0.43378226    -0.11025008 -jW.TT h]  
    Change in Focus                :      -0.640081 dpJ_r>NI  
         17     0.39321881    -0.15081353 2K< 8  
    Change in Focus                :       0.914906 :a^t3s  
         18     0.20692530    -0.33710703 ]|!OP  
    Change in Focus                :       0.801607 uvMy^_}L  
         19     0.51374068    -0.03029165 : imW\@u  
    Change in Focus                :       0.947293 N|1M1EBOu>  
         20     0.38013374    -0.16389860 e_#._Pi  
    Change in Focus                :       0.667010 9Kpa><  
    ,eOB(?Ku  
    Number of traceable Monte Carlo files generated: 20 ~{d$!`|a  
    Z&#('Z  
    Nominal     0.54403234 YHkn2]^#A  
    Best        0.54384387    Trial     2 $RYa6"`  
    Worst       0.18154684    Trial     4 ~kQA7;`j$  
    Mean        0.35770970 Vc_'hz]Z  
    Std Dev     0.11156454 ao%NK<Lt  
    5pj22 s  
    Hx#;Z  
    Compensator Statistics: 4\y/'`xm)6  
    Change in back focus: BZ:H`M`n  
    Minimum            :        -1.354815 +s(HOq)b  
    Maximum            :         1.611296 }0eF~>Df  
    Mean               :         0.161872 Lilr0|U+  
    Standard Deviation :         0.869664 LISM ngQ.  
    nKS7Q1+  
    90% >       0.20977951               Yb +yw_5  
    80% >       0.22748071               4~y(`\0?4  
    50% >       0.38667627               $AfM>+GQ`n  
    20% >       0.46553746               0C1pt5K  
    10% >       0.50064115                G]D+Sl4<7i  
    g>Y|9Y  
    End of Run. *194{ ep  
    6,)[+Bl  
    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 4^TG>j?M  
    aAJU`=uq  
    ?6Jx@Sh  
    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 [ p{#XwN  
    txW{7+,  
    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                 X*&[u7No  
    80% >       0.22748071                 ~;1l9^N|  
    50% >       0.38667627                 J/\V%~ 1F  
    20% >       0.46553746                 ;ado0-VQi'  
    10% >       0.50064115 4kG,*3 &2  
    vY%d   
    最后这个数值是MTF值呢，还是MTF的公差？ 5|l* `J)  
    "]z-: \ V  
    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？？？   3D` YZ#M  
    OlAs'TE^  
    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  : <^zHE=h"  
    90% >       0.20977951                 >B2:kY F  
    80% >       0.22748071                 P@,nA41,j  
    50% >       0.38667627                 hir4ZO%Zt  
    20% >       0.46553746                 2 !At2P2  
    10% >       0.50064115 pek%08VSEU  
    .......  ^}:#  
    +"8,Mh  
    'g$(QvGF 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   F0:A]`|  
    Mode                : Sensitivities I =1+h  
    Sampling            : 2 ]|sAK%/  
    Nominal Criterion   : 0.54403234 t`+'r}=d  
    Test Wavelength     : 0.6328 sgO'wXcoP  
    D5:{fWVsV/  
    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？ _>v<(7  
    {'AWZ(  
    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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