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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 7gC?<;\0  
    l\UjvG  
    j, 0`k  
    [HILK `@@  
    然后添加了默认公差分析，基本没变 0kE[=#'.'  
    j?K$w`  
    :G _  
    Nr4}x7  
    然后运行分析的结果如下： l2 .S^S  
    T\l`Y-vu  
    Analysis of Tolerances _uIS[%4g  
    eEZgG=s  
    File : E:\光学设计资料\zemax练习\f500.ZMX 0AB a&'h  
    Title: K\K& K~Z  
    Date : TUE JUN 21 2011 8b/$Qp4d  
    @DysM~I  
    Units are Millimeters. xC`!uPk/pL  
    All changes are computed using linear differences. 0 +=sBk (  
     +mocSx[  
    Paraxial Focus compensation only. `ASDUgx Mq  
    ',EI[ ]+  
    WARNING: Solves should be removed prior to tolerancing. }A3/(  
    Q#eMwM#~  
    Mnemonics: @c|=onx5  
    TFRN: Tolerance on curvature in fringes. @v)Z>xv  
    TTHI: Tolerance on thickness. <%)vl P#@  
    TSDX: Tolerance on surface decentering in x. yv,FzF}7  
    TSDY: Tolerance on surface decentering in y. '09|Y#F  
    TSTX: Tolerance on surface tilt in x (degrees). Qq,2V  
    TSTY: Tolerance on surface tilt in y (degrees). m{q'RAw  
    TIRR: Tolerance on irregularity (fringes). Q"&Mr+  
    TIND: Tolerance on Nd index of refraction. 3TwjC:Yhv2  
    TEDX: Tolerance on element decentering in x. _b&|0j:Ud  
    TEDY: Tolerance on element decentering in y. "^]gIQc  
    TETX: Tolerance on element tilt in x (degrees). h P6f   
    TETY: Tolerance on element tilt in y (degrees). J^7m?mA  
    ~]KdsT(=_  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 4"P9z}y=i  
    rq%]CsRY5  
    WARNING: Boundary constraints on compensators will be ignored. !Tnjha*  
    wps/{h,  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm }_+XN"}C  
    Mode                : Sensitivities 5 ^{~xOM5  
    Sampling            : 2 =$'>VPQ  
    Nominal Criterion   : 0.54403234 @O#!W]6NT6  
    Test Wavelength     : 0.6328 B!RfPk1B<*  
    e;.,x 5+  
    l(>6Yq  
    Fields: XY Symmetric Angle in degrees ](r}`u%}y  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ~5HkDtI)  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 JQQyl:=  
    6"-$WUlg  
    Sensitivity Analysis: 2 }xePX9?  
    ^Om}9rXw1  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| _}R$h=YD  
    Type                      Value      Criterion        Change          Value      Criterion        Change N3G9o`k  
    Fringe tolerance on surface 1 _U~R   
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 H{}&|;0  
    Change in Focus                :      -0.000000                            0.000000  Zmu  
    Fringe tolerance on surface 2 p $Tk;;wm  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 =R5W KX  
    Change in Focus                :       0.000000                            0.000000 XFhH+4#]  
    Fringe tolerance on surface 3 zhJeTctRz  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 T~UDD3  
    Change in Focus                :      -0.000000                            0.000000 NM. e4  
    Thickness tolerance on surface 1 j7!u;K^c  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ZKi&f,:  
    Change in Focus                :       0.000000                            0.000000 #BRIp(65-6  
    Thickness tolerance on surface 2 mE~ WE+lw9  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 5EtR>Pc  
    Change in Focus                :       0.000000                           -0.000000 ?N{\qF1Mz  
    Decenter X tolerance on surfaces 1 through 3 >2#<gp3  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 @gP*z6Z  
    Change in Focus                :       0.000000                            0.000000 %FjUtB  
    Decenter Y tolerance on surfaces 1 through 3 ,hzRqFg2  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 OX"Na2-el  
    Change in Focus                :       0.000000                            0.000000 m>uG{4<-  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 3Zp<#  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 _ZRmD\_t  
    Change in Focus                :       0.000000                            0.000000 vQ< ~-E  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) p3P8@M  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Fyvo;1a  
    Change in Focus                :       0.000000                            0.000000 D`XXR}8V  
    Decenter X tolerance on surface 1 P>_O :xD  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ;+75"=[YT  
    Change in Focus                :       0.000000                            0.000000 n@pwOHQn<|  
    Decenter Y tolerance on surface 1 _9BL7W $;  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 y [McdlH m  
    Change in Focus                :       0.000000                            0.000000 SK}jhm"y  
    Tilt X tolerance on surface (degrees) 1 Luao?;|U  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 A"*=K;u/|m  
    Change in Focus                :       0.000000                            0.000000 Z}O]pm>=G  
    Tilt Y tolerance on surface (degrees) 1 z83v J*.  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Jt$YSp=!!  
    Change in Focus                :       0.000000                            0.000000 5AT^puL]]  
    Decenter X tolerance on surface 2 }Y-V!z5z!  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ld(60?z>FH  
    Change in Focus                :       0.000000                            0.000000 }+j B5z'w  
    Decenter Y tolerance on surface 2 JE O$v|X  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 JpXv+V  
    Change in Focus                :       0.000000                            0.000000 D5"5`w=C  
    Tilt X tolerance on surface (degrees) 2 <0';2yP"  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 8L[+$g`  
    Change in Focus                :       0.000000                            0.000000 -'c qepC{T  
    Tilt Y tolerance on surface (degrees) 2 ;Am3eJa*-  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 QN8+Uj/zx  
    Change in Focus                :       0.000000                            0.000000 K+Him] b  
    Decenter X tolerance on surface 3 'bbw0aB4  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 45biy(qa  
    Change in Focus                :       0.000000                            0.000000 aQoB1 qd8  
    Decenter Y tolerance on surface 3 @Z/jaAjUC  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 +c8`N'~  
    Change in Focus                :       0.000000                            0.000000 '6zZ`Ll9  
    Tilt X tolerance on surface (degrees) 3 ,X/j6\VBO  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 _sy{rnaqvb  
    Change in Focus                :       0.000000                            0.000000 "e-z 2G@z  
    Tilt Y tolerance on surface (degrees) 3 LB@<Q.b,U  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 M[I=N  
    Change in Focus                :       0.000000                            0.000000 3?E7\\/R  
    Irregularity of surface 1 in fringes wai3g-`  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 pCkMm)2g!  
    Change in Focus                :       0.000000                            0.000000 KaEaJ  
    Irregularity of surface 2 in fringes <HnJD/g  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 {)Wf[2zJ  
    Change in Focus                :       0.000000                            0.000000 |2'WSAWG  
    Irregularity of surface 3 in fringes jA "}\^%3  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 KY&Lv^1_|  
    Change in Focus                :       0.000000                            0.000000 u""26k51  
    Index tolerance on surface 1 O#.YTTj  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 pwMA,X/{  
    Change in Focus                :       0.000000                            0.000000 +1#oVl!  
    Index tolerance on surface 2 7s^b@&Le  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ksq4t  
    Change in Focus                :       0.000000                           -0.000000 bF9.k  
    5_y w  
    Worst offenders: qBF|' .$^  
    Type                      Value      Criterion        Change 6!i`\>I]  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ((Av3{05H&  
    TSTY   2             0.20000000     0.35349910    -0.19053324 e oE)Mq  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 ,~7~ S"  
    TSTX   2             0.20000000     0.35349910    -0.19053324 r]6+&K  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ~AWn 1vFc  
    TSTY   1             0.20000000     0.42678383    -0.11724851 #i~P])%gNP  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 2RZa}  
    TSTX   1             0.20000000     0.42678383    -0.11724851 iUz?mt;k  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 h,y_ ^cf  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ,|O6<u9  
    `(j~b=PP  
    Estimated Performance Changes based upon Root-Sum-Square method: wYe;xk`>  
    Nominal MTF                 :     0.54403234 Yv=L'0K&  
    Estimated change            :    -0.36299231 >Ec;6V e  
    Estimated MTF               :     0.18104003 %V;* E]  
    4Kt0}W  
    Compensator Statistics: H6Zo|n  
    Change in back focus: "~ =O`5V  
    Minimum            :        -0.000000 $@s-OQ}  
    Maximum            :         0.000000 # Ey_.4S  
    Mean               :        -0.000000 KHP/Y {mH  
    Standard Deviation :         0.000000 Y*b$^C%2  
    LV ]10v6  
    Monte Carlo Analysis: q-^{2.ftcx  
    Number of trials: 20 @u$NB3  
    zvGncjMkC  
    Initial Statistics: Normal Distribution dB~A4pZa  
    K:e[#b8 :R  
      Trial       Criterion        Change L_ T+KaQCH  
          1     0.42804416    -0.11598818 ^PC;fn,I  
    Change in Focus                :      -0.400171 Vk`Uz1*  
          2     0.54384387    -0.00018847 TP| ogF?  
    Change in Focus                :       1.018470 ,2U  
          3     0.44510003    -0.09893230 t"9r`0>  
    Change in Focus                :      -0.601922 J>+\a1{  
          4     0.18154684    -0.36248550 '_Q';T_n99  
    Change in Focus                :       0.920681  R`o Xkj  
          5     0.28665820    -0.25737414 h:7\S\|8  
    Change in Focus                :       1.253875 Mk9J~'C_  
          6     0.21263372    -0.33139862 _9"ZMUZ{  
    Change in Focus                :      -0.903878 vH}VieU  
          7     0.40051424    -0.14351809 Vo[.^0  
    Change in Focus                :      -1.354815 4h?@D_{k  
          8     0.48754161    -0.05649072 uEhPO  
    Change in Focus                :       0.215922 o+{7"Na8[  
          9     0.40357468    -0.14045766 w('}QB`xad  
    Change in Focus                :       0.281783 'A3*[e|OS  
         10     0.26315315    -0.28087919 [xb'73  
    Change in Focus                :      -1.048393 UdcV<#  
         11     0.26120585    -0.28282649 yD$d^/:  
    Change in Focus                :       1.017611 S.>fB7'(?=  
         12     0.24033815    -0.30369419 E|oOd<z  
    Change in Focus                :      -0.109292 'ahz@+l O  
         13     0.37164046    -0.17239188 nm_taER  
    Change in Focus                :      -0.692430 YHY*dk*|C  
         14     0.48597489    -0.05805744 nxEC6Vh'  
    Change in Focus                :      -0.662040 g0QYBrp  
         15     0.21462327    -0.32940907 'xG{q+jj'  
    Change in Focus                :       1.611296 6*EIhIQ(  
         16     0.43378226    -0.11025008 *6][[)(  
    Change in Focus                :      -0.640081 2^=.f?_YR  
         17     0.39321881    -0.15081353 g/FT6+&T.  
    Change in Focus                :       0.914906 S&&Q U #  
         18     0.20692530    -0.33710703 E:B<_  
    Change in Focus                :       0.801607 Rxr?T-  
         19     0.51374068    -0.03029165 UCj<FN `  
    Change in Focus                :       0.947293 ru/{s3  
         20     0.38013374    -0.16389860 [_ uT+q3  
    Change in Focus                :       0.667010 v=dK2FaY  
    o:*$G~. k  
    Number of traceable Monte Carlo files generated: 20 RH7!3ye  
    4M0p:Ey '  
    Nominal     0.54403234 2B)1 tP  
    Best        0.54384387    Trial     2 <e S+3,  
    Worst       0.18154684    Trial     4 .=yv m  
    Mean        0.35770970 eNH9`Aa  
    Std Dev     0.11156454 S|KUh|=Q  
    2[1t )EW  
    uK#2vgT  
    Compensator Statistics: p Djt\R<f  
    Change in back focus: +~:OUR*>  
    Minimum            :        -1.354815 LOG>x!  
    Maximum            :         1.611296 5-H"{29  
    Mean               :         0.161872 h3GUFiZ.  
    Standard Deviation :         0.869664 M+j*5wNy  
    ] M#LB&Pe  
    90% >       0.20977951               +Y;hVc E9  
    80% >       0.22748071               MO| Dwuaf  
    50% >       0.38667627               "~zLG"  
    20% >       0.46553746               m;1/+qs0  
    10% >       0.50064115                M$!-B,1BX  
    tnBCO%uG  
    End of Run. 7hLh}  
    >Y\?v-^~;  
    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 ,h/l-#KS  
    ~>_UTI  
    ,_<|e\>~  
    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 +!:=Mm  
    +M#}(hK  
    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                 GDiyFTr  
    80% >       0.22748071                 IGly x'\_  
    50% >       0.38667627                 F ~7TE91C  
    20% >       0.46553746                 k{hNv|:,  
    10% >       0.50064115 3Z` wU  
    F!4V!VWA}  
    最后这个数值是MTF值呢，还是MTF的公差？ hd(TKFL^y  
    ?4aW^l6/  
    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？？？   tTub W=H  
    OQKc_z'"  
    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  : =PNkzFUo  
    90% >       0.20977951                 #b:YY^{g_  
    80% >       0.22748071                 =n_z`I  
    50% >       0.38667627                 AkdO:hVtG  
    20% >       0.46553746                 ~gOZ\jm}  
    10% >       0.50064115 UIg?3J}R  
    ....... VlSM/y5  
    |!7leL  
    `-R&4%t%  
    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   4GeN<9~YS  
    Mode                : Sensitivities :A:7^jrhi  
    Sampling            : 2 &)JoB  
    Nominal Criterion   : 0.54403234 Y6hV ;[\F  
    Test Wavelength     : 0.6328 wq!9wk9  
    f8=qnY2j  
    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？ F9r/ M"5  
    ad47 42  
    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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