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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 r-!Qw1  
    .K(9=yh  
    1n&%L8]  
    "u^vBd[}  
    然后添加了默认公差分析，基本没变 cuumQQ  
    5p}j{f  
    m%[/w wL  
    4vN:Kj  
    然后运行分析的结果如下： U9^1 A*  
    Iy4%,8C]g  
    Analysis of Tolerances IzUpkwN  
    {47l1wV]  
    File : E:\光学设计资料\zemax练习\f500.ZMX hDSf>X_*_G  
    Title: L[ D+=  
    Date : TUE JUN 21 2011 P7,g^:$  
    "M-';;  
    Units are Millimeters. Jq(;BJ90R  
    All changes are computed using linear differences. XMkRYI1~  
    {5{VGAD&]>  
    Paraxial Focus compensation only. X0^@E   
    y9/nkF1p  
    WARNING: Solves should be removed prior to tolerancing. hLuv  
    NQ[X=a8N  
    Mnemonics: ~&RrlFh  
    TFRN: Tolerance on curvature in fringes. G'}N?8s1  
    TTHI: Tolerance on thickness. 5psJv|Zo]  
    TSDX: Tolerance on surface decentering in x. F7*)u-4Yn  
    TSDY: Tolerance on surface decentering in y. X"q[rsB  
    TSTX: Tolerance on surface tilt in x (degrees). nh@JGy*L  
    TSTY: Tolerance on surface tilt in y (degrees). %Gyn.9\  
    TIRR: Tolerance on irregularity (fringes). Q8h0.(#-  
    TIND: Tolerance on Nd index of refraction. 5VOw}{Pt  
    TEDX: Tolerance on element decentering in x. K x) PK  
    TEDY: Tolerance on element decentering in y. 8UgogNR\  
    TETX: Tolerance on element tilt in x (degrees). i.Y2]1  
    TETY: Tolerance on element tilt in y (degrees). uo2k  
    ilJ`_QN  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. n YUFRV$  
    ~@l4T_,k  
    WARNING: Boundary constraints on compensators will be ignored. 5XHejHn>  
    + jwk4BU  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 82EvlmD  
    Mode                : Sensitivities Jh&DL8`  
    Sampling            : 2 ]4[%Sv6]G  
    Nominal Criterion   : 0.54403234 i\/'w]  
    Test Wavelength     : 0.6328 =JfwHFHd#  
    )~R[aXkvY  
    V?G%-+^  
    Fields: XY Symmetric Angle in degrees T"za|Fo  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY fi*b]a\'  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 9d/- +j'  
    2P8wvNDG  
    Sensitivity Analysis: kw2yb   
    B?-w<":!  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| g&F$hm  
    Type                      Value      Criterion        Change          Value      Criterion        Change a$Ud"  
    Fringe tolerance on surface 1 <W8 %eRfU  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 =d ;#Nu-  
    Change in Focus                :      -0.000000                            0.000000 *aM7d>nG5  
    Fringe tolerance on surface 2 GeY!f/yQ<  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 |J:r]);@K  
    Change in Focus                :       0.000000                            0.000000 t'At9<ib  
    Fringe tolerance on surface 3 Wj|W B*B  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 $3p48`.\  
    Change in Focus                :      -0.000000                            0.000000 LkzA_|8:D  
    Thickness tolerance on surface 1 8+gp"!E  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 w8Z#]kRv  
    Change in Focus                :       0.000000                            0.000000 XPMUhozV  
    Thickness tolerance on surface 2 zw+wq+2"  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ]nRf%Vi8g  
    Change in Focus                :       0.000000                           -0.000000 G[ #R1'  
    Decenter X tolerance on surfaces 1 through 3 7~Inxk;  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 H3R{+7  
    Change in Focus                :       0.000000                            0.000000 NI,>$@{  
    Decenter Y tolerance on surfaces 1 through 3 `|AH3v1  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 N]/cBGy  
    Change in Focus                :       0.000000                            0.000000 rL"]m_FK  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ^ /G ;  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ^8 ,prxaok  
    Change in Focus                :       0.000000                            0.000000 Nb ~J'"  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) xsRkO9x  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 5;/q[oXI  
    Change in Focus                :       0.000000                            0.000000 Os>&:{D4!  
    Decenter X tolerance on surface 1 Ty{ SZU J  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 @#W4?L*D  
    Change in Focus                :       0.000000                            0.000000 J>T98y/))  
    Decenter Y tolerance on surface 1 ub>:dNBN  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 UTu~"uCR  
    Change in Focus                :       0.000000                            0.000000 P nE7}  
    Tilt X tolerance on surface (degrees) 1 0F- +)S?M[  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 FT6CKsM"  
    Change in Focus                :       0.000000                            0.000000 vO9=CCxvq  
    Tilt Y tolerance on surface (degrees) 1 wt9f2  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 NV/paoyx:*  
    Change in Focus                :       0.000000                            0.000000 Pb T2- F_  
    Decenter X tolerance on surface 2 mUP!jTF  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 RiR],Sj  
    Change in Focus                :       0.000000                            0.000000 s Y1@~v  
    Decenter Y tolerance on surface 2 "y7\F9  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 %2I>-0]B  
    Change in Focus                :       0.000000                            0.000000 w$iPFZC'  
    Tilt X tolerance on surface (degrees) 2 f!YlYk5  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ~PyS;L}  
    Change in Focus                :       0.000000                            0.000000 'Y ,2CN  
    Tilt Y tolerance on surface (degrees) 2 T`]%$$1s  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 k.54lNl  
    Change in Focus                :       0.000000                            0.000000 =d"5k DK-m  
    Decenter X tolerance on surface 3 RaSuzy^`*]  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 5p~5-_JX  
    Change in Focus                :       0.000000                            0.000000 (:E@kpK  
    Decenter Y tolerance on surface 3 a)r["*bTx  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 9@"pR;X@  
    Change in Focus                :       0.000000                            0.000000 BH}Cx[n?~  
    Tilt X tolerance on surface (degrees) 3 J^#g?RHN>m  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ,!^c`_Q\>@  
    Change in Focus                :       0.000000                            0.000000 DS%]7,g]  
    Tilt Y tolerance on surface (degrees) 3 t D 8l0  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 _\k?uUo&,^  
    Change in Focus                :       0.000000                            0.000000  H6nH  
    Irregularity of surface 1 in fringes PeiRe  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 s1[.L~;J  
    Change in Focus                :       0.000000                            0.000000 pV8tn!  
    Irregularity of surface 2 in fringes Io IhQ  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ZZHQ?p-  
    Change in Focus                :       0.000000                            0.000000 kUGFg{"  
    Irregularity of surface 3 in fringes *rxYal4ad  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 )n9,?F#l  
    Change in Focus                :       0.000000                            0.000000 E6xdPjoWy  
    Index tolerance on surface 1 ;q%z\gA  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 havmhS)O  
    Change in Focus                :       0.000000                            0.000000 Xe: ^<$z  
    Index tolerance on surface 2 &D-z|ZjgHi  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 7y30TU  
    Change in Focus                :       0.000000                           -0.000000 2x|F Vp  
    St!0MdCH  
    Worst offenders: KCZ<#ca^  
    Type                      Value      Criterion        Change q4!\^HwQ  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 V,& OO  
    TSTY   2             0.20000000     0.35349910    -0.19053324 9vDOSwU*  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 qo \9,<  
    TSTX   2             0.20000000     0.35349910    -0.19053324 rrgOp5aV"  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 $A,YQH+  
    TSTY   1             0.20000000     0.42678383    -0.11724851 [h B$%i]\<  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 3jW&S  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Au)~"N~p?  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 vAop#V  
    TSTY   3             0.20000000     0.42861670    -0.11541563 YE*|KL^  
    /!>OWh*~  
    Estimated Performance Changes based upon Root-Sum-Square method: cotySio$  
    Nominal MTF                 :     0.54403234 Bnwq!i!M  
    Estimated change            :    -0.36299231 $f+I#uJ  
    Estimated MTF               :     0.18104003 ^@=4HtA  
    RiQg]3oY  
    Compensator Statistics: nW\W<[O9  
    Change in back focus: GJS(  
    Minimum            :        -0.000000 1Lje.%(E.  
    Maximum            :         0.000000 }|8^+V&  
    Mean               :        -0.000000 Y%TY%"<  
    Standard Deviation :         0.000000 :6(@P1vA 6  
    Cq<Lj  
    Monte Carlo Analysis: 2(\PsN w!  
    Number of trials: 20 {gu3KV  
    (w"(RM~  
    Initial Statistics: Normal Distribution sEfT#$ a^8  
    !or_CJ8%  
      Trial       Criterion        Change %c]N-  
          1     0.42804416    -0.11598818 PC255  
    Change in Focus                :      -0.400171 e9Gu`$K  
          2     0.54384387    -0.00018847 _e8v12s  
    Change in Focus                :       1.018470 >hG*=4oh  
          3     0.44510003    -0.09893230 3gJZlH5IR  
    Change in Focus                :      -0.601922 T <k;^iqR  
          4     0.18154684    -0.36248550 >e.KD) qA  
    Change in Focus                :       0.920681 w03Ur4>T  
          5     0.28665820    -0.25737414 X+u1p?  
    Change in Focus                :       1.253875 /f oI.S  
          6     0.21263372    -0.33139862 Q;q{1M>  
    Change in Focus                :      -0.903878 /d"@$+  
          7     0.40051424    -0.14351809 Ie _{P&J  
    Change in Focus                :      -1.354815 b-@9Xjv  
          8     0.48754161    -0.05649072 Q*'OY~  
    Change in Focus                :       0.215922 C}jrx^u>  
          9     0.40357468    -0.14045766 #^aa&*<D_  
    Change in Focus                :       0.281783 @6R6.i5d  
         10     0.26315315    -0.28087919 - 3PLP$P  
    Change in Focus                :      -1.048393 )~"0d;6_  
         11     0.26120585    -0.28282649 E vY^]M_U  
    Change in Focus                :       1.017611 !v%>W< 3Q  
         12     0.24033815    -0.30369419 t"J{qfNs  
    Change in Focus                :      -0.109292 c`S+>:  
         13     0.37164046    -0.17239188 # &5.   
    Change in Focus                :      -0.692430 q;sZwp<  
         14     0.48597489    -0.05805744 \4<|QE  
    Change in Focus                :      -0.662040 Ets6tM`  
         15     0.21462327    -0.32940907 EX, {1^h  
    Change in Focus                :       1.611296 &IRM<A!8  
         16     0.43378226    -0.11025008 ku}`PS0UGd  
    Change in Focus                :      -0.640081 MwQt/Qv=  
         17     0.39321881    -0.15081353 glROT@  
    Change in Focus                :       0.914906 }F9#3W&`c  
         18     0.20692530    -0.33710703 cCx{ ")  
    Change in Focus                :       0.801607 _.]mES|  
         19     0.51374068    -0.03029165 {wz_ngQ  
    Change in Focus                :       0.947293 :.a184ax  
         20     0.38013374    -0.16389860 f4d-eXGwx`  
    Change in Focus                :       0.667010 (@^ySiU  
    XUUP#<,s  
    Number of traceable Monte Carlo files generated: 20 fshG ~L7S9  
    '<ZHzDW@  
    Nominal     0.54403234 +`V<& Y-5l  
    Best        0.54384387    Trial     2 X+,0;% p  
    Worst       0.18154684    Trial     4 =_@) KWeX$  
    Mean        0.35770970 cuy9QBB :  
    Std Dev     0.11156454 8)"lCIf  
    8uW%jG3/  
    <_=O0 t| 6  
    Compensator Statistics: MujEjD "|  
    Change in back focus: {t|#>UCK  
    Minimum            :        -1.354815 Ar?ZUASJ  
    Maximum            :         1.611296 ! jDopE0L  
    Mean               :         0.161872 w?N>3`Jnf  
    Standard Deviation :         0.869664 nr}Ols  
    @k'V`ZQF  
    90% >       0.20977951               Ix@B*Xz:`  
    80% >       0.22748071               ,D<U PtPQ  
    50% >       0.38667627               0mmHN`<  
    20% >       0.46553746               NNE(jJ`/  
    10% >       0.50064115                ?(Plb&kR  
    :kwDa a  
    End of Run. cyabqx  
    A+4Kj~`!  
    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 Nvh& =%{g  
    f:~$x  
    Y}Y~?kE>M|  
    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 CW/L(RQ  
    L8 NZU*"  
    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                 `R.Pz _oe  
    80% >       0.22748071                 pFwJ:  
    50% >       0.38667627                 |90X_6(  
    20% >       0.46553746                 ji.?bKqHE  
    10% >       0.50064115 ]?oJxW.  
    owVks-/  
    最后这个数值是MTF值呢，还是MTF的公差？ zfg+gd)Z  
    c813NHW  
    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？？？   X-TGrdoX  
    y c 8 h}`  
    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  : 3;> z %{  
    90% >       0.20977951                 l}/&6hI+d  
    80% >       0.22748071                 BnGoB`n  
    50% >       0.38667627                 '<uM\v^k  
    20% >       0.46553746                 O"\_%=X9  
    10% >       0.50064115 | B*B>P#  
    ....... [[6" qq  
    U=69q]  
    : D-D+x  
    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   vcp{Gf|^  
    Mode                : Sensitivities fHEIys,{  
    Sampling            : 2 xRhGBb{@s  
    Nominal Criterion   : 0.54403234 D6&P9e_5  
    Test Wavelength     : 0.6328 GA[D@Wy  
    .KC V|x;QW  
    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？ eF.nNu  
    i7r)9^y  
    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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