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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 @"@a70WHk  
    LPk@t^[  
    D3pz69W  
    G\.~/<Mg+  
    然后添加了默认公差分析，基本没变 SZykG[  
    H4/wO  
    SI(f&T(  
    &2'-v@kK  
    然后运行分析的结果如下： 7Ai?}%b-  
    e#Tv5O  
    Analysis of Tolerances .*O*@)}Ud  
    @d75X YKu  
    File : E:\光学设计资料\zemax练习\f500.ZMX ;>6< u.N  
    Title: NOb`)qb  
    Date : TUE JUN 21 2011 J<) qw  
    }@DCcf$<  
    Units are Millimeters. +WX/4_STV  
    All changes are computed using linear differences. "c^!LV  
    N0`9/lr|  
    Paraxial Focus compensation only. J-W9Bamx  
    1.hWgWDP  
    WARNING: Solves should be removed prior to tolerancing. #-{<d% qk  
    xtV+Le%  
    Mnemonics: FX:`7c]:9  
    TFRN: Tolerance on curvature in fringes. w.qtSW6M+  
    TTHI: Tolerance on thickness. Y&|Z*s+ +}  
    TSDX: Tolerance on surface decentering in x. b R\7j+*&  
    TSDY: Tolerance on surface decentering in y. [%W'd9`>  
    TSTX: Tolerance on surface tilt in x (degrees). 7 qKz_O  
    TSTY: Tolerance on surface tilt in y (degrees). 2e48L677-  
    TIRR: Tolerance on irregularity (fringes). QcegT/vO  
    TIND: Tolerance on Nd index of refraction. %? ~'A59  
    TEDX: Tolerance on element decentering in x. s%[F,hQRk  
    TEDY: Tolerance on element decentering in y. %6K7uvTq  
    TETX: Tolerance on element tilt in x (degrees). ,'L>:pF3  
    TETY: Tolerance on element tilt in y (degrees). q0sf\|'<}  
    8}/DD^M  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Vk5Z[w a  
     hfB$4s9  
    WARNING: Boundary constraints on compensators will be ignored. >.:+|Br`  
    MK< y$B{}  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm (;NJ<x  
    Mode                : Sensitivities jNZ .Fb  
    Sampling            : 2 :e1h!G  
    Nominal Criterion   : 0.54403234 dQ:,pe7A  
    Test Wavelength     : 0.6328 dSI"yz  
    YAi-eL67l  
    Mz+I YP`L  
    Fields: XY Symmetric Angle in degrees "be\%W+<  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY g[xoS\d  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 kk4 |4  
    ucCf%T\:  
    Sensitivity Analysis: t}t(fJHY`  
    ! j~wAdHk  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 4&)sROjV=  
    Type                      Value      Criterion        Change          Value      Criterion        Change '|yxB')  
    Fringe tolerance on surface 1 Bfb~<rs[  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 }D1x%L  
    Change in Focus                :      -0.000000                            0.000000 ,05PYBc3  
    Fringe tolerance on surface 2 c r=Q39{  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 =vThtl/azD  
    Change in Focus                :       0.000000                            0.000000 MGdzrcF  
    Fringe tolerance on surface 3 K)SWM3r  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 I| TNo-!$  
    Change in Focus                :      -0.000000                            0.000000 +IZ=E >a  
    Thickness tolerance on surface 1 nnlj#  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 !$)reaS  
    Change in Focus                :       0.000000                            0.000000 .ARYCTyG  
    Thickness tolerance on surface 2 bW yimr&B  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 d<c29Y  
    Change in Focus                :       0.000000                           -0.000000 U1\EwBK8*T  
    Decenter X tolerance on surfaces 1 through 3 m:BzIcW<\  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 k@xinK%O{  
    Change in Focus                :       0.000000                            0.000000 c!w[)>v  
    Decenter Y tolerance on surfaces 1 through 3 rzY)vC+ZT  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 'h$:~C  
    Change in Focus                :       0.000000                            0.000000 VH7t^fb  
    Tilt X tolerance on surfaces 1 through 3 (degrees) &YFe"C  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 S2X@t>u-  
    Change in Focus                :       0.000000                            0.000000 xd?=#d  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) !Uiq3s`1T  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Va!G4_OT  
    Change in Focus                :       0.000000                            0.000000 (l5p_x  
    Decenter X tolerance on surface 1 (Jp~=6&lKf  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 FDo PW~+[  
    Change in Focus                :       0.000000                            0.000000 {lK2yi  
    Decenter Y tolerance on surface 1 gUiO66#x  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 C-pR$WM:HN  
    Change in Focus                :       0.000000                            0.000000  9q X$  
    Tilt X tolerance on surface (degrees) 1 [^!SkQ  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ?NE/ }?a  
    Change in Focus                :       0.000000                            0.000000 4U2{1aN`  
    Tilt Y tolerance on surface (degrees) 1 FNGa4  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Om.%K>V  
    Change in Focus                :       0.000000                            0.000000 5OM #_.p  
    Decenter X tolerance on surface 2 P9!awLM-  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 9nY`rF8@  
    Change in Focus                :       0.000000                            0.000000 LhG\)>Y%  
    Decenter Y tolerance on surface 2 $(}rTm  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 w4fKh  
    Change in Focus                :       0.000000                            0.000000 S1|5+PPs  
    Tilt X tolerance on surface (degrees) 2 |JkfAnrN$I  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 zw#n85=  
    Change in Focus                :       0.000000                            0.000000 qV=:2m10x  
    Tilt Y tolerance on surface (degrees) 2 Na@bXcz)  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ,ye}p 1M  
    Change in Focus                :       0.000000                            0.000000 c b-IRGF  
    Decenter X tolerance on surface 3 <NZPLo F  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 j$ T12  
    Change in Focus                :       0.000000                            0.000000 fz=8"cDR  
    Decenter Y tolerance on surface 3 MKbcJZe  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 i]n2\v AG  
    Change in Focus                :       0.000000                            0.000000 R_!'=0}V  
    Tilt X tolerance on surface (degrees) 3 stG +4w  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 %P}H3;2  
    Change in Focus                :       0.000000                            0.000000 ~q`f@I  
    Tilt Y tolerance on surface (degrees) 3 ^cZ< .d2  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 HMVP71  
    Change in Focus                :       0.000000                            0.000000 ,h=a+ja8  
    Irregularity of surface 1 in fringes P'wo+Tn*  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 20I`F>-*  
    Change in Focus                :       0.000000                            0.000000 ge`GQ>  
    Irregularity of surface 2 in fringes )4rt-_t<  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 /<_!Gz.@uG  
    Change in Focus                :       0.000000                            0.000000 K/9Jx(I,qL  
    Irregularity of surface 3 in fringes :]:)c8!6  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 x[mz`0  
    Change in Focus                :       0.000000                            0.000000 ;PaU"z+Je~  
    Index tolerance on surface 1 qu^g~"s  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 @QTw9,pS  
    Change in Focus                :       0.000000                            0.000000 +iQ@J+k  
    Index tolerance on surface 2 pPa]@ z~O  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 YPx+9^)  
    Change in Focus                :       0.000000                           -0.000000 kqX=3Zo  
    {|>'(iqH"w  
    Worst offenders: '( I0VJJ   
    Type                      Value      Criterion        Change mr7Oi `dE  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 # fqrZ9:@  
    TSTY   2             0.20000000     0.35349910    -0.19053324 (:8a6=xQ  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 _-BP?'lN  
    TSTX   2             0.20000000     0.35349910    -0.19053324 ^EiU>   
    TSTY   1            -0.20000000     0.42678383    -0.11724851 'v^Vg  
    TSTY   1             0.20000000     0.42678383    -0.11724851 $'KQP8M+  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 7;+G)44  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ^g4Gw6q 6  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 (Y'cxwj%  
    TSTY   3             0.20000000     0.42861670    -0.11541563 z&QfZs  
    HW]?%9a  
    Estimated Performance Changes based upon Root-Sum-Square method: Yuw:W:wY  
    Nominal MTF                 :     0.54403234 NWh1u`  
    Estimated change            :    -0.36299231 T1q27I  
    Estimated MTF               :     0.18104003 ~~Bks{"BS  
    N!c FUZ5]  
    Compensator Statistics: R*vQvO%)h  
    Change in back focus: @%fTdneH  
    Minimum            :        -0.000000 ^?RH<z  
    Maximum            :         0.000000 1UK= t  
    Mean               :        -0.000000 G_?U?:!AC  
    Standard Deviation :         0.000000 W`PJ flr|  
    i.'"`pn_  
    Monte Carlo Analysis: 4Q0ZY(2 EO  
    Number of trials: 20 ^R:&c;&,  
    Nl[&rZ-&  
    Initial Statistics: Normal Distribution Lfn$Q3}O`$  
    c#TY3Z|  
      Trial       Criterion        Change 7f+@6jqD\)  
          1     0.42804416    -0.11598818 sJKr%2nVV  
    Change in Focus                :      -0.400171 "a].v 8l!  
          2     0.54384387    -0.00018847 tx7 zG.,  
    Change in Focus                :       1.018470 M?YNK]   
          3     0.44510003    -0.09893230 @\nQ{\^;  
    Change in Focus                :      -0.601922 cW>=/  
          4     0.18154684    -0.36248550 Eu' ;f_s  
    Change in Focus                :       0.920681 u `/V1  
          5     0.28665820    -0.25737414 EF!J#N2  
    Change in Focus                :       1.253875 9;Z{++z  
          6     0.21263372    -0.33139862 MlYm\x8{M  
    Change in Focus                :      -0.903878 F(n<:TvlK  
          7     0.40051424    -0.14351809 Hrpz4E%\Aw  
    Change in Focus                :      -1.354815 Y Iwa =^  
          8     0.48754161    -0.05649072 . .5~ x~O  
    Change in Focus                :       0.215922 &(,\~  
          9     0.40357468    -0.14045766 }Q4Vy  
    Change in Focus                :       0.281783 G+N1#0,q  
         10     0.26315315    -0.28087919 ^85Eveu  
    Change in Focus                :      -1.048393 Hmr f\(x  
         11     0.26120585    -0.28282649 )M dddz4  
    Change in Focus                :       1.017611 l,lqhq\  
         12     0.24033815    -0.30369419 a%.W9=h=M(  
    Change in Focus                :      -0.109292 }| MX=:@*  
         13     0.37164046    -0.17239188 %IBT85{  
    Change in Focus                :      -0.692430 8<"g&+T  
         14     0.48597489    -0.05805744 rl 7up  
    Change in Focus                :      -0.662040 Vm<_e  
         15     0.21462327    -0.32940907 ;*Vnwt A  
    Change in Focus                :       1.611296 p#jAEY p  
         16     0.43378226    -0.11025008 P}~MO)*1  
    Change in Focus                :      -0.640081 &u[{VR:  
         17     0.39321881    -0.15081353 peu9B gs  
    Change in Focus                :       0.914906 *V hEl7  
         18     0.20692530    -0.33710703 jz_Y|"{`v  
    Change in Focus                :       0.801607 eMnK@J  
         19     0.51374068    -0.03029165 HhQ0>  
    Change in Focus                :       0.947293 ;+XrCy!.)L  
         20     0.38013374    -0.16389860 `2]0 X#R  
    Change in Focus                :       0.667010 zEU[u7%  
    9[zxq`qT}+  
    Number of traceable Monte Carlo files generated: 20 Hc'Pp{| X  
    +ZNOvcsV  
    Nominal     0.54403234 z*h:Nt%.  
    Best        0.54384387    Trial     2 iGSJ\  
    Worst       0.18154684    Trial     4 AC1RP`c  
    Mean        0.35770970 BJwuN  
    Std Dev     0.11156454 %Zk6K!MY#  
    <~5O-.G]  
    I+H~ 5zq.  
    Compensator Statistics: pp"#pl  
    Change in back focus: is8i_FoD,n  
    Minimum            :        -1.354815 z(LR!hr  
    Maximum            :         1.611296 ,i6E L  
    Mean               :         0.161872 Op-z"inw  
    Standard Deviation :         0.869664 ^%,{R},s  
    Oe;#q  
    90% >       0.20977951               I;NW!"pU  
    80% >       0.22748071               U\Vg&"P  
    50% >       0.38667627               ywJ [WfCY  
    20% >       0.46553746               SM8N*WdiU  
    10% >       0.50064115                v|(]u3=1_  
    :41Y  
    End of Run. w@^J.7h^  
    xH\\#4/  
    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 73rme,   
    pgES)  
    $x'jf?zs!  
    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 Y M:9m)  
    t9U6\ru  
    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                 ^5]9B<i[Y  
    80% >       0.22748071                 ;>Z+b#C[  
    50% >       0.38667627                 )8oyo~4?  
    20% >       0.46553746                 0bh 6ay4  
    10% >       0.50064115 u;$qJjS N  
    ks. p)F>]  
    最后这个数值是MTF值呢，还是MTF的公差？ 3iw3:1RZUZ  
    CbM~\6 R  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   U>*@VOgB  
    e">&B]#}  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : MjQ>& fUK  
    90% >       0.20977951                 :KC]1_zqR  
    80% >       0.22748071                 k {{eyC  
    50% >       0.38667627                 N:64Gko"K  
    20% >       0.46553746                 +(Hp ".gU  
    10% >       0.50064115 %ho?KU2j  
    ....... _t]Q*i0p  
    rgXX,+cO  
    1h`F*:nva  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   c'?EI EP  
    Mode                : Sensitivities #Q_Scxf  
    Sampling            : 2 Z8h;3Ek  
    Nominal Criterion   : 0.54403234 =v|$dDz  
    Test Wavelength     : 0.6328 DI-&P3iGx  
    n|.eL8lX.<  
    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？  S{XO3  
    LCIe1P2  
    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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