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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 0honHP  
    uFa-QG^Y{  
    HJ(=?TU  
    ;vZ*,q6  
    然后添加了默认公差分析，基本没变 Zr~"\llk  
    \>_eEZ5  
    R7y-#?  
    e1Dj0s?i~K  
    然后运行分析的结果如下： + >Fv*lux  
    m}sh I8S  
    Analysis of Tolerances g!z8oPT  
    <:H  
    File : E:\光学设计资料\zemax练习\f500.ZMX -1dIZy  
    Title: [)B@  
    Date : TUE JUN 21 2011 _p?I{1O  
    !k ;[^>  
    Units are Millimeters. &7JEb]1C  
    All changes are computed using linear differences. %Gnd"SGs  
    1"N/ZKF-x  
    Paraxial Focus compensation only. hlt9x.e.A  
    4h[2C6 \+`  
    WARNING: Solves should be removed prior to tolerancing. F\I5fNs@  
    i] V F'tG  
    Mnemonics: pyGFDB5_P  
    TFRN: Tolerance on curvature in fringes. 75' Ua$  
    TTHI: Tolerance on thickness. 8Fyc#Xo8  
    TSDX: Tolerance on surface decentering in x. #p;4:IT  
    TSDY: Tolerance on surface decentering in y. wK/}E h\^  
    TSTX: Tolerance on surface tilt in x (degrees). GA}hp%  
    TSTY: Tolerance on surface tilt in y (degrees). )[F46?$vrk  
    TIRR: Tolerance on irregularity (fringes). \r)_-  
    TIND: Tolerance on Nd index of refraction. 2*b# +b  
    TEDX: Tolerance on element decentering in x. lU >)n  
    TEDY: Tolerance on element decentering in y. =Td#2V;0  
    TETX: Tolerance on element tilt in x (degrees). 10a=YG  
    TETY: Tolerance on element tilt in y (degrees). e\+~  
    |>m# m*{S  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. \ZmFH8=|f  
    Q7OnhGA  
    WARNING: Boundary constraints on compensators will be ignored. rZwf%}  
    tOp:e KN  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm H-PW(  
    Mode                : Sensitivities kM}ic(K  
    Sampling            : 2 _AsHw  
    Nominal Criterion   : 0.54403234 3<Pyr-z h  
    Test Wavelength     : 0.6328 !nqm ;96  
    ;8 /+wBnm  
    K%.YNVHHC  
    Fields: XY Symmetric Angle in degrees -X6\[I:+A  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY E: LQ!  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ;NN(CKZ9A  
    T5X'D(\|  
    Sensitivity Analysis: 0|*UeM  
    6>P  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ._F 6-pl  
    Type                      Value      Criterion        Change          Value      Criterion        Change 9cx!N,R t  
    Fringe tolerance on surface 1 W6!4Qyn  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 zN8&M<mTl  
    Change in Focus                :      -0.000000                            0.000000 \M1M2(@pDJ  
    Fringe tolerance on surface 2 {O3oUE+  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 d"e%tsj  
    Change in Focus                :       0.000000                            0.000000 _g/T H-;^  
    Fringe tolerance on surface 3 (Mire%$h  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 !<UEq`2  
    Change in Focus                :      -0.000000                            0.000000 Ke;X3j ]`  
    Thickness tolerance on surface 1 MSm`4lw  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 S &lTKYP  
    Change in Focus                :       0.000000                            0.000000 3T.M?UG>  
    Thickness tolerance on surface 2 3Wtv+L7Br  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ]I.& .?^i0  
    Change in Focus                :       0.000000                           -0.000000 OKLggim{  
    Decenter X tolerance on surfaces 1 through 3 ky lrf4=  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 [?K\%]  
    Change in Focus                :       0.000000                            0.000000 \Z7([Gh  
    Decenter Y tolerance on surfaces 1 through 3 u^4"96aXJ  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Y|qixpP  
    Change in Focus                :       0.000000                            0.000000 TG%hy"k  
    Tilt X tolerance on surfaces 1 through 3 (degrees) U!-+v:SF  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 2 vJ[vsrFv  
    Change in Focus                :       0.000000                            0.000000 +e3WwUx  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) [C~)&2wh>  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 O|7{%5h  
    Change in Focus                :       0.000000                            0.000000 (8eNZ*+mO  
    Decenter X tolerance on surface 1 ws=9u-  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 i[BR(D&l_p  
    Change in Focus                :       0.000000                            0.000000 j*Wh;I+h  
    Decenter Y tolerance on surface 1 l!2Z`D_MD  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 6/WK((Fd  
    Change in Focus                :       0.000000                            0.000000 Pk?%PB ?Z  
    Tilt X tolerance on surface (degrees) 1 SYW= L  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 $rQFM[  
    Change in Focus                :       0.000000                            0.000000 qer'V  
    Tilt Y tolerance on surface (degrees) 1 ~RLx;  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 oJ;O>J@c  
    Change in Focus                :       0.000000                            0.000000 H6 f; BS  
    Decenter X tolerance on surface 2 "6o}qeB l  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 R_*D7|v  
    Change in Focus                :       0.000000                            0.000000 pN f9  
    Decenter Y tolerance on surface 2 &)f++(i  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 R&|)y:bg|  
    Change in Focus                :       0.000000                            0.000000 g!) LhE  
    Tilt X tolerance on surface (degrees) 2 V<7K!<g)b  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Y1ilH-8  
    Change in Focus                :       0.000000                            0.000000 MfpWow-#{  
    Tilt Y tolerance on surface (degrees) 2 zam0(^=  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 byj mH  
    Change in Focus                :       0.000000                            0.000000 VOK$;s'9}  
    Decenter X tolerance on surface 3 4l!Yop0h  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 a:%5.!Vd  
    Change in Focus                :       0.000000                            0.000000  |ukdn2Q  
    Decenter Y tolerance on surface 3 EKS<s82hF&  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 {F9Qy0.*u  
    Change in Focus                :       0.000000                            0.000000 A%8`zR  
    Tilt X tolerance on surface (degrees) 3 OVo  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 wj5s5dH  
    Change in Focus                :       0.000000                            0.000000 ].T;x|  
    Tilt Y tolerance on surface (degrees) 3 .dLX'84fY  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 |ij5c@~&  
    Change in Focus                :       0.000000                            0.000000 =|&"/$+s  
    Irregularity of surface 1 in fringes W me1w\0  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 #LyjJmQ  
    Change in Focus                :       0.000000                            0.000000 k@)m-K  
    Irregularity of surface 2 in fringes \V- Y,!~5  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ue:P#] tx  
    Change in Focus                :       0.000000                            0.000000 OZ0%;Y0  
    Irregularity of surface 3 in fringes vc{]c }  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 e`2R{H  
    Change in Focus                :       0.000000                            0.000000 0]w[wc <  
    Index tolerance on surface 1 #cF8)GC  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Py0 i%pZ  
    Change in Focus                :       0.000000                            0.000000 x4A~MuGU  
    Index tolerance on surface 2 ./*,Thc  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ^F0jI5j).  
    Change in Focus                :       0.000000                           -0.000000 ITqigGan%  
    tsC|R~wW  
    Worst offenders: QM=436fq  
    Type                      Value      Criterion        Change y\|\9Q%D  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 im[gbac  
    TSTY   2             0.20000000     0.35349910    -0.19053324 5*za]   
    TSTX   2            -0.20000000     0.35349910    -0.19053324 VRP.tD  
    TSTX   2             0.20000000     0.35349910    -0.19053324 ef ;="N  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 >#n-4NZ;p9  
    TSTY   1             0.20000000     0.42678383    -0.11724851 N$\5%  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 5)NfZN# &  
    TSTX   1             0.20000000     0.42678383    -0.11724851 1% %Tm"  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 R$m?&1K  
    TSTY   3             0.20000000     0.42861670    -0.11541563 +~.Jw#HqS  
    !e"m*S.(6{  
    Estimated Performance Changes based upon Root-Sum-Square method: 'eY[?LJ]U  
    Nominal MTF                 :     0.54403234 zV Li  
    Estimated change            :    -0.36299231 DJjDKVO5t  
    Estimated MTF               :     0.18104003 ouZ9oy(}a  
    VOOThdR  
    Compensator Statistics: KCT"a :\  
    Change in back focus: 3o/ a8  
    Minimum            :        -0.000000 9TS=>  
    Maximum            :         0.000000 rX}==`#\  
    Mean               :        -0.000000 \eN/fTPm  
    Standard Deviation :         0.000000 CnA)>4E*'  
    6T_c#G5  
    Monte Carlo Analysis: FdHWF|D  
    Number of trials: 20 "jMnYEG  
    _JO @O^Ndd  
    Initial Statistics: Normal Distribution /`@>v$oo  
    bdhgHjz  
      Trial       Criterion        Change %4K#<b"W  
          1     0.42804416    -0.11598818 T=Q{K|JE  
    Change in Focus                :      -0.400171 yvwcXNXR@  
          2     0.54384387    -0.00018847 [kkcV5I-  
    Change in Focus                :       1.018470 5R G5uH/-<  
          3     0.44510003    -0.09893230 Fa^]\:  
    Change in Focus                :      -0.601922 DTVnQC  
          4     0.18154684    -0.36248550 ) hB*Hjh  
    Change in Focus                :       0.920681 %=eD)p7l-  
          5     0.28665820    -0.25737414 S6Pb V}  
    Change in Focus                :       1.253875 rrRC5h  
          6     0.21263372    -0.33139862 bZfJG^3  
    Change in Focus                :      -0.903878 .1lc'gu5y  
          7     0.40051424    -0.14351809 # TF  
    Change in Focus                :      -1.354815 !PbFo%)  
          8     0.48754161    -0.05649072 $>m<+nai'  
    Change in Focus                :       0.215922 X/749"23  
          9     0.40357468    -0.14045766 Rx2|VD  
    Change in Focus                :       0.281783 {Vu:yh\<  
         10     0.26315315    -0.28087919 niBpbsO  
    Change in Focus                :      -1.048393 &>t1A5  
         11     0.26120585    -0.28282649 /omVM u  
    Change in Focus                :       1.017611 IDZn ,^  
         12     0.24033815    -0.30369419 _ RT}Ee}Y  
    Change in Focus                :      -0.109292 M/;g|J jM  
         13     0.37164046    -0.17239188 Z`M Q+  
    Change in Focus                :      -0.692430 NebZGD2K  
         14     0.48597489    -0.05805744  t/(j8w  
    Change in Focus                :      -0.662040 Pw.+DA  
         15     0.21462327    -0.32940907 z8MYgn 7  
    Change in Focus                :       1.611296 -&tiM v  
         16     0.43378226    -0.11025008 Vd~k4  
    Change in Focus                :      -0.640081 <{uIB;P  
         17     0.39321881    -0.15081353 Jq)k?WS  
    Change in Focus                :       0.914906 Y [S^&pF  
         18     0.20692530    -0.33710703 &ayoTE^0,  
    Change in Focus                :       0.801607 z"`?<A&u  
         19     0.51374068    -0.03029165 +[+ Jd)Z  
    Change in Focus                :       0.947293 K.Z{4x=0  
         20     0.38013374    -0.16389860 U5=J;[w}N  
    Change in Focus                :       0.667010 a}\JA`5;)Z  
    (FHh,y~v  
    Number of traceable Monte Carlo files generated: 20 XzsK^E0R  
    XwMC/]lK<  
    Nominal     0.54403234 |{Q,,<C  
    Best        0.54384387    Trial     2 ^;bkU|(`6  
    Worst       0.18154684    Trial     4 24fWj?A|^  
    Mean        0.35770970 +a;j>hh  
    Std Dev     0.11156454 :8g \B{  
    Fjb[Ev  
    IK);BN2<L  
    Compensator Statistics: ) |a5Qxz  
    Change in back focus: @hPbD?)M  
    Minimum            :        -1.354815 9mZ1 a6,x  
    Maximum            :         1.611296 HL]?CWtGP  
    Mean               :         0.161872 $'Z!Y;Ue  
    Standard Deviation :         0.869664 i`;I"oY4  
    lvlH5Fc  
    90% >       0.20977951               nFSa~M  
    80% >       0.22748071               G <q@K-  
    50% >       0.38667627               sM K/l @7  
    20% >       0.46553746               3ssio-X  
    10% >       0.50064115                j? A +qk  
    }{"\"Bn_  
    End of Run. hAdEq$  
    IcZ'KV  
    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 ~S9nLb:O{  
    Jo ^ o`9  
    8}"j#tDc  
    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 I$&/?ns@O  
    -~g3?!+Hb  
    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                 V6L_aee}CK  
    80% >       0.22748071                 >dM'UpN@  
    50% >       0.38667627                 Pzqgg43Xf  
    20% >       0.46553746                 h\5 7t@A  
    10% >       0.50064115 ;# {x_>M  
    kBT uM"  
    最后这个数值是MTF值呢，还是MTF的公差？ 3"".kf,O5e  
    {*2A% }S  
    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？？？   JsC0^A;fM  
    H\^^p!^)  
    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  : Vls*fY:W  
    90% >       0.20977951                 cnI!}Bu  
    80% >       0.22748071                 G66vzwO   
    50% >       0.38667627                 k8w8I$QEM  
    20% >       0.46553746                 &ts!D!Hj  
    10% >       0.50064115 }bHd U]$}  
    ....... ;N i+TS  
    qG~O] ($  
    |JrG?:n  
    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   HHT K{X+  
    Mode                : Sensitivities +|\dVe.  
    Sampling            : 2 $UKV2c  
    Nominal Criterion   : 0.54403234 HZ ]'?&0  
    Test Wavelength     : 0.6328 Av7bp[OD  
    #j'O rD  
    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？ GIt; Y  
    J?u",a]|H"  
    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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