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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 fzkCI  
    #2lvfR|  
    n ]6 0  
    Hl3XqR  
    然后添加了默认公差分析，基本没变 |=^#d\?]j  
    @ (u?=x;  
    HM$`z"p5jg  
    Qa7S'(  
    然后运行分析的结果如下： }n2-*{)x  
    /_VRO9R\V  
    Analysis of Tolerances #<tWYE  
    f,`}hFD  
    File : E:\光学设计资料\zemax练习\f500.ZMX pw<q?q%  
    Title: rjpafGCp  
    Date : TUE JUN 21 2011 a7v[l04  
    z:i X]df  
    Units are Millimeters. e??{&[  
    All changes are computed using linear differences. F~Z 0  
    Y)4Nydq  
    Paraxial Focus compensation only. c~L6fvS  
    49J+&G?)j  
    WARNING: Solves should be removed prior to tolerancing. ?CT^Zegmr  
    _iboTcUF  
    Mnemonics: Z1V'NJI+  
    TFRN: Tolerance on curvature in fringes. 5%Fn^u:  
    TTHI: Tolerance on thickness. |`(?<m  
    TSDX: Tolerance on surface decentering in x. Q~w G(0'8  
    TSDY: Tolerance on surface decentering in y. Lx:N!RDw  
    TSTX: Tolerance on surface tilt in x (degrees). q5\LdI2  
    TSTY: Tolerance on surface tilt in y (degrees). D 5r   
    TIRR: Tolerance on irregularity (fringes). wx"6",M  
    TIND: Tolerance on Nd index of refraction. hRy }G'0  
    TEDX: Tolerance on element decentering in x. ^/d^$  
    TEDY: Tolerance on element decentering in y. y~A7pzBZ=  
    TETX: Tolerance on element tilt in x (degrees). E_' n4@}Cx  
    TETY: Tolerance on element tilt in y (degrees). SAll9W4  
    X+gz+V/  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. o4[2`mT  
    +}-W.H%`0  
    WARNING: Boundary constraints on compensators will be ignored. +&N&D"9A  
    n8OdRv  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm b gc<)=  
    Mode                : Sensitivities ;&^"q{m  
    Sampling            : 2 _6-/S!7Y\  
    Nominal Criterion   : 0.54403234 :D+ SY  
    Test Wavelength     : 0.6328 eRx[&-c  
    vs0H^L  
    2E ; %=e  
    Fields: XY Symmetric Angle in degrees 7SY->-H8  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY k+R?JWC:  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 t`1]U4s&I  
    Lj Q1ar\  
    Sensitivity Analysis: x&fCe{5  
    SQKY;p  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 6 % y)  
    Type                      Value      Criterion        Change          Value      Criterion        Change NdSxWrD`m  
    Fringe tolerance on surface 1 uF3p1by  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 5B.??;xtaV  
    Change in Focus                :      -0.000000                            0.000000 ])wMUJWg2  
    Fringe tolerance on surface 2 y0&HXX#\  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 5 EuJ  
    Change in Focus                :       0.000000                            0.000000 3F'dT[;  
    Fringe tolerance on surface 3 &|{,4V0%A  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 n#4J]Z@  
    Change in Focus                :      -0.000000                            0.000000 ylxfh(  
    Thickness tolerance on surface 1 A-wxf91+:  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 hYZ:" x  
    Change in Focus                :       0.000000                            0.000000 vlN. OQ  
    Thickness tolerance on surface 2 *-!ndbf  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 U}wq~fD  
    Change in Focus                :       0.000000                           -0.000000 UlN|Oy,  
    Decenter X tolerance on surfaces 1 through 3 l`%} {3r9  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 =i5:*J  
    Change in Focus                :       0.000000                            0.000000 boOw K?  
    Decenter Y tolerance on surfaces 1 through 3 0(g MR  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 v8k ^=A:  
    Change in Focus                :       0.000000                            0.000000 SyVbCj  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 1&pP}v ?  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 / bu<,o  
    Change in Focus                :       0.000000                            0.000000 +\Mm (Nd  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) geN%rD  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 $)7f%II  
    Change in Focus                :       0.000000                            0.000000 rLVc<595  
    Decenter X tolerance on surface 1  ~0'l,  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ulSTR f  
    Change in Focus                :       0.000000                            0.000000 }0nB' 0|y  
    Decenter Y tolerance on surface 1 U?ic$J]N  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 RH4n0 =2  
    Change in Focus                :       0.000000                            0.000000 ,L:)ZZgN  
    Tilt X tolerance on surface (degrees) 1 +}0*_VW  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 :(p rx   
    Change in Focus                :       0.000000                            0.000000 r= | |sZs  
    Tilt Y tolerance on surface (degrees) 1 6Vzc:8o>  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 vhEs+ j  
    Change in Focus                :       0.000000                            0.000000 `LU,uz  
    Decenter X tolerance on surface 2 ; <@O^_+  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 %R"/`N9R,  
    Change in Focus                :       0.000000                            0.000000 #R PB;#{  
    Decenter Y tolerance on surface 2 zwrZ ^  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ;k%sKVP  
    Change in Focus                :       0.000000                            0.000000 a[cH@7W.#  
    Tilt X tolerance on surface (degrees) 2 ~JPzjE  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 +&zCmkVC7  
    Change in Focus                :       0.000000                            0.000000 *K.7Zf0  
    Tilt Y tolerance on surface (degrees) 2 n4&j<zAV{  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 j2qfEvU  
    Change in Focus                :       0.000000                            0.000000 :tG".z  
    Decenter X tolerance on surface 3 ;H r@0f  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 4H=sD t  
    Change in Focus                :       0.000000                            0.000000 CPeK0(7Zh  
    Decenter Y tolerance on surface 3 *dTf(J  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 wSyu^KDz  
    Change in Focus                :       0.000000                            0.000000 0i `Zy!  
    Tilt X tolerance on surface (degrees) 3 @N{Ht)1r  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 DmPsltpzQ  
    Change in Focus                :       0.000000                            0.000000 6i9I 4*'  
    Tilt Y tolerance on surface (degrees) 3 _-\{kJ  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 (4{9 QO  
    Change in Focus                :       0.000000                            0.000000 {$:13AnK   
    Irregularity of surface 1 in fringes esFL<T  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 &.4_4"l(  
    Change in Focus                :       0.000000                            0.000000 Zs|sPatV<  
    Irregularity of surface 2 in fringes 13kb~'+&r  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 X(z-?6N4  
    Change in Focus                :       0.000000                            0.000000 8J1.(Mwb?  
    Irregularity of surface 3 in fringes -y*+G&  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ,ToEK Id  
    Change in Focus                :       0.000000                            0.000000 =I}V PxhE7  
    Index tolerance on surface 1 :8wF0n-'  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 kP@OIhRe  
    Change in Focus                :       0.000000                            0.000000 g|_*(=Q  
    Index tolerance on surface 2  "<h#Z(  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ;<<IXXKU  
    Change in Focus                :       0.000000                           -0.000000 Li^!OHro.  
    oA@^N4PD  
    Worst offenders: X6 '&X  
    Type                      Value      Criterion        Change bLF0MVLM  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ADz|Y~V!  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ,!4_Uc  
    TSTX   2            -0.20000000     0.35349910    -0.19053324  Vp^sER  
    TSTX   2             0.20000000     0.35349910    -0.19053324 GTNTx5H  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 NmF2E+'  
    TSTY   1             0.20000000     0.42678383    -0.11724851 bM3e7olWS  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 dS=,. }  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Lpf=VyqC  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 q~_jF$9SX  
    TSTY   3             0.20000000     0.42861670    -0.11541563 rWqA)j*!  
    R7E"7"M10  
    Estimated Performance Changes based upon Root-Sum-Square method: Ec 7M'~1  
    Nominal MTF                 :     0.54403234 1dsxqN(:  
    Estimated change            :    -0.36299231 lM,:c.R  
    Estimated MTF               :     0.18104003 V%=t2+  
    4]KceE  
    Compensator Statistics: +]vl8, 4@  
    Change in back focus: x=N;>  
    Minimum            :        -0.000000 9V\`{(R  
    Maximum            :         0.000000 yqI|BF`  
    Mean               :        -0.000000 ':$a6f &T  
    Standard Deviation :         0.000000 7S Zs/wWh%  
    p~ItHwiT  
    Monte Carlo Analysis: _ 0E,@[  
    Number of trials: 20 ^%JWc 3jZ  
    #JucOWxjY  
    Initial Statistics: Normal Distribution rnE'gH(V'  
    V=~dgy ~@  
      Trial       Criterion        Change %b6wo?%*  
          1     0.42804416    -0.11598818 GXVGU-br  
    Change in Focus                :      -0.400171 mH .I!  
          2     0.54384387    -0.00018847 6si-IJ  
    Change in Focus                :       1.018470 E}2[P b)e  
          3     0.44510003    -0.09893230 0fU>L^P_?  
    Change in Focus                :      -0.601922 9~I WGj?  
          4     0.18154684    -0.36248550 LJ3UB  
    Change in Focus                :       0.920681 u*`GIRfWT  
          5     0.28665820    -0.25737414 d*HAKXd&:j  
    Change in Focus                :       1.253875 +Wc[ $,vk  
          6     0.21263372    -0.33139862 5{TF6  
    Change in Focus                :      -0.903878 W0k q>s4  
          7     0.40051424    -0.14351809 FG\?_G  
    Change in Focus                :      -1.354815 C:{'0m*jKs  
          8     0.48754161    -0.05649072 ,#l oVLy  
    Change in Focus                :       0.215922 iI0'z=J  
          9     0.40357468    -0.14045766 [4yQ-L)]e  
    Change in Focus                :       0.281783 =`H( `2  
         10     0.26315315    -0.28087919 ]du~V?N   
    Change in Focus                :      -1.048393 n0q(EQy1U  
         11     0.26120585    -0.28282649 b87o6"j  
    Change in Focus                :       1.017611 YeJdkt  
         12     0.24033815    -0.30369419 &YNhKm@"  
    Change in Focus                :      -0.109292 6:pN?|=6X  
         13     0.37164046    -0.17239188 qcF{Kex"  
    Change in Focus                :      -0.692430 [:qX3"B  
         14     0.48597489    -0.05805744 }.zn:e  
    Change in Focus                :      -0.662040 *TkABUL  
         15     0.21462327    -0.32940907 v( B4Bz2  
    Change in Focus                :       1.611296 ZxW V ,s&p  
         16     0.43378226    -0.11025008 }I]q$3 .  
    Change in Focus                :      -0.640081 XjbK!.  
         17     0.39321881    -0.15081353 ,e,{6Sg6gl  
    Change in Focus                :       0.914906 !k63 `(Ti  
         18     0.20692530    -0.33710703 #Uu"olX7  
    Change in Focus                :       0.801607 ZlzFmNe60  
         19     0.51374068    -0.03029165 cS"6%:hQ  
    Change in Focus                :       0.947293 [tN/}_]  
         20     0.38013374    -0.16389860 FCPbp!q6  
    Change in Focus                :       0.667010 9'M_tMm5  
    Zj;!7ZuT1  
    Number of traceable Monte Carlo files generated: 20 we9AB_y  
    {ex]_V>  
    Nominal     0.54403234 nDvWOt  
    Best        0.54384387    Trial     2 ; o\wSHc  
    Worst       0.18154684    Trial     4 W+E2({  
    Mean        0.35770970 AdNsY/Y(  
    Std Dev     0.11156454 8TZe=sD~cr  
    ` g~-5Z~J  
    ZSNg^)cN  
    Compensator Statistics: <#-ERQw  
    Change in back focus: I f(_$>  
    Minimum            :        -1.354815 By9/tB  
    Maximum            :         1.611296 Sy_M!`B  
    Mean               :         0.161872 *QX$Mo^E  
    Standard Deviation :         0.869664 7^F?key?  
    jX%Q  
    90% >       0.20977951               OsXQWSkj~  
    80% >       0.22748071               tdm /U  
    50% >       0.38667627               EA\~m*k  
    20% >       0.46553746               w'!gLta  
    10% >       0.50064115                fu/c)D6u*m  
    yT4|eHl  
    End of Run. 3A5" %  
    jv ";?*I6.  
    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 oaHBz_pg  
    "'Q:%_;  
    fOJyY[  
    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 z!%}0  
    n!p&.Mt  
    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                  >4Lb+]  
    80% >       0.22748071                 ?$ 3=m)s  
    50% >       0.38667627                 aU3&=aN+  
    20% >       0.46553746                 GXAcy OV  
    10% >       0.50064115 sJ,zB[e8  
    T:si?7CR  
    最后这个数值是MTF值呢，还是MTF的公差？ eaI&DP  
    Cc^t&Eg  
    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？？？   R\<^A~(Gl  
    "0 v]O~s  
    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  : * F&C`]  
    90% >       0.20977951                 6tP^_9njy  
    80% >       0.22748071                 7XdLZ4ub  
    50% >       0.38667627                 u+S*D\p<`  
    20% >       0.46553746                 ]` 3;8,  
    10% >       0.50064115 \p.ku%{  
    ....... `57ffQR9  
    GCc@ :*4[  
    QarA.Ne~  
    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   jiz"`,-},O  
    Mode                : Sensitivities Q;SMwCB0M  
    Sampling            : 2 |odl~juU  
    Nominal Criterion   : 0.54403234 ]M>mwnt+  
    Test Wavelength     : 0.6328 k_$w+Q  
    vxK}f*d  
    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#=o<  
    <e)3 j6F!  
    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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