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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 n%RaEL  
    P*>?/I`G  
    ;@Z1y  
    @Q{:m)\  
    然后添加了默认公差分析，基本没变 m8x?`Gw~jw  
    Nu3IYS5&  
    [{#T N  
    f%1\1_^g  
    然后运行分析的结果如下： Anpp`>}N  
    .@EzHe ^W  
    Analysis of Tolerances |+JO]J#bc  
    J7oj@Or9  
    File : E:\光学设计资料\zemax练习\f500.ZMX Zn40NKYc  
    Title: F7w\ctUP  
    Date : TUE JUN 21 2011 Z+EZ</'(a  
    w S?Kc^2O  
    Units are Millimeters. ;;rx)|\<R  
    All changes are computed using linear differences. {~R?f$}""j  
    z.\\m;s  
    Paraxial Focus compensation only. VPuo!H  
    >Di`zw~  
    WARNING: Solves should be removed prior to tolerancing. N+5f.c+S-  
    yw%E S  
    Mnemonics: pFiE2V_aS  
    TFRN: Tolerance on curvature in fringes. #lSGH 5Fp?  
    TTHI: Tolerance on thickness. ]5:[6;wS  
    TSDX: Tolerance on surface decentering in x. 7h!nt=8Y  
    TSDY: Tolerance on surface decentering in y.  lX/7  
    TSTX: Tolerance on surface tilt in x (degrees). 59:kL<;S-  
    TSTY: Tolerance on surface tilt in y (degrees). oa5L5Zr,A  
    TIRR: Tolerance on irregularity (fringes). =w8 0y'  
    TIND: Tolerance on Nd index of refraction. wv\"(e7(  
    TEDX: Tolerance on element decentering in x. Yt:%)&50}-  
    TEDY: Tolerance on element decentering in y. "?<`]WG\  
    TETX: Tolerance on element tilt in x (degrees). EG &me  
    TETY: Tolerance on element tilt in y (degrees). Xs"d+dc  
    U UtS me  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 4AvIU!0w  
    0R+p\Nc&1  
    WARNING: Boundary constraints on compensators will be ignored. E5|GP  
    qh&KNJ>1  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm !Q%r4Nr  
    Mode                : Sensitivities CN-4FI)1D9  
    Sampling            : 2 ~R=p[h)  
    Nominal Criterion   : 0.54403234 @n9iOf~<  
    Test Wavelength     : 0.6328 Bd;EI)JT  
    5 ^l-3s?M  
    .{bT9Sc5  
    Fields: XY Symmetric Angle in degrees ?;(!(<{  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY i!JSEQ_8  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 @Xh8kvc81  
    Dk")/ ib  
    Sensitivity Analysis: Oq3t-omXS  
    V1G5Kph  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| w)YTHY (k;  
    Type                      Value      Criterion        Change          Value      Criterion        Change YY7dw:>e/  
    Fringe tolerance on surface 1 K&dc< 4DC  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 K7(GdKZe  
    Change in Focus                :      -0.000000                            0.000000 eCg|@d%D  
    Fringe tolerance on surface 2 eUgKwu;  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 m{lS-DlRg  
    Change in Focus                :       0.000000                            0.000000 -W})<{End  
    Fringe tolerance on surface 3 AI9=?X<kh  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662  Spo[JQ%6  
    Change in Focus                :      -0.000000                            0.000000 ~+RrL,t#  
    Thickness tolerance on surface 1 (\%+id|/q@  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 %F;uW[4r  
    Change in Focus                :       0.000000                            0.000000 eD^(*a>(  
    Thickness tolerance on surface 2 '=(yh{W  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 `sRys oW  
    Change in Focus                :       0.000000                           -0.000000 OQyZ'  
    Decenter X tolerance on surfaces 1 through 3 iq 8Hq)I]  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 #X5Tt  ;  
    Change in Focus                :       0.000000                            0.000000 ,p..h+l  
    Decenter Y tolerance on surfaces 1 through 3 Dl}va  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 j{/wG::  
    Change in Focus                :       0.000000                            0.000000 W%9"E??c  
    Tilt X tolerance on surfaces 1 through 3 (degrees) L>57eF)7  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 V0F1X s`  
    Change in Focus                :       0.000000                            0.000000 1py >[II@  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ty9(mtH+  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 n0^3F1Z  
    Change in Focus                :       0.000000                            0.000000 ^c sOXP=Yp  
    Decenter X tolerance on surface 1 C$v !emu  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Mt12 1Q&"  
    Change in Focus                :       0.000000                            0.000000 C\ cZ  
    Decenter Y tolerance on surface 1 )L,Nh~  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 K*j1Fy:  
    Change in Focus                :       0.000000                            0.000000 /"1[qT\F  
    Tilt X tolerance on surface (degrees) 1 e#tWQM3  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 w /CD-  
    Change in Focus                :       0.000000                            0.000000 g8Zf("  
    Tilt Y tolerance on surface (degrees) 1 %BRll  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 !/e8x;_  
    Change in Focus                :       0.000000                            0.000000 k~$}&O  
    Decenter X tolerance on surface 2 u$x'P <b  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 1 |3vwgRhs  
    Change in Focus                :       0.000000                            0.000000 TiI3<.a!  
    Decenter Y tolerance on surface 2 ]#$r TWMl'  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 #}'sknvM}  
    Change in Focus                :       0.000000                            0.000000 ~$ 4!C'0  
    Tilt X tolerance on surface (degrees) 2 n(Ry~Xu_  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 byj7c(  
    Change in Focus                :       0.000000                            0.000000 :HN\A4=kc(  
    Tilt Y tolerance on surface (degrees) 2 ~T'$gl  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 uF-Rl## >  
    Change in Focus                :       0.000000                            0.000000 ~NO'8 Mr  
    Decenter X tolerance on surface 3 %TQ5#{Y  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 V"sm+0J  
    Change in Focus                :       0.000000                            0.000000 7!8R)m^1[  
    Decenter Y tolerance on surface 3 mC`U"rlK~  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 _We4%  
    Change in Focus                :       0.000000                            0.000000 B+=Xb;p8  
    Tilt X tolerance on surface (degrees) 3  OV$|!n  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 5' 3H$%dC  
    Change in Focus                :       0.000000                            0.000000 4= hz4(5a  
    Tilt Y tolerance on surface (degrees) 3 3#c0p790  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 :}fIu?hCA  
    Change in Focus                :       0.000000                            0.000000 ot,e?lF  
    Irregularity of surface 1 in fringes A)o%\j  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 bRc~e@  
    Change in Focus                :       0.000000                            0.000000 p/&s-G F  
    Irregularity of surface 2 in fringes K>`*JJ,  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 1|#j/  
    Change in Focus                :       0.000000                            0.000000 1`EkN0iZ  
    Irregularity of surface 3 in fringes !tv+,l&L  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 7.1FRxS  
    Change in Focus                :       0.000000                            0.000000 UL\gcZ Zkl  
    Index tolerance on surface 1 Y>'t)PK  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 r1Cq8vD*m  
    Change in Focus                :       0.000000                            0.000000 se]QEd7]7  
    Index tolerance on surface 2 ;!/g`*?  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ndB*^nT  
    Change in Focus                :       0.000000                           -0.000000 ^o6&|q  
    [%BWCd8Q~P  
    Worst offenders: i@spd5.  
    Type                      Value      Criterion        Change wE09%  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 Ng<oz*>U  
    TSTY   2             0.20000000     0.35349910    -0.19053324 H=7Nh6v  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 -Mufo.Jz1o  
    TSTX   2             0.20000000     0.35349910    -0.19053324 }h_= n>  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 -#"7F:N1  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Z"g6z#L&  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 bmGtYv  
    TSTX   1             0.20000000     0.42678383    -0.11724851 AoN |&o  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 7W\aX*]  
    TSTY   3             0.20000000     0.42861670    -0.11541563 E,:E u<  
    u}IQ)Ma  
    Estimated Performance Changes based upon Root-Sum-Square method: sBm/9vu  
    Nominal MTF                 :     0.54403234 WCZeY?_^c  
    Estimated change            :    -0.36299231 RkXW(T`  
    Estimated MTF               :     0.18104003 N"o+;yR  
    Q?TXM1Bp  
    Compensator Statistics: ]u@`XVEJ  
    Change in back focus: D<XRu4^;  
    Minimum            :        -0.000000 )Aa  h  
    Maximum            :         0.000000 5!^DKyw:  
    Mean               :        -0.000000 *%`jcF  
    Standard Deviation :         0.000000 kv'gs+,e  
    Y!L<& sl   
    Monte Carlo Analysis: p*S;4+>#  
    Number of trials: 20 :yC|Q)  
    07tSXl5!  
    Initial Statistics: Normal Distribution 0}y-DCuQ  
    H g;;>  
      Trial       Criterion        Change /A~+32 B  
          1     0.42804416    -0.11598818 h|t\rV^  
    Change in Focus                :      -0.400171 /N82h`\n  
          2     0.54384387    -0.00018847 AT]Ty  
    Change in Focus                :       1.018470 iKN800^u  
          3     0.44510003    -0.09893230 BY^5z<^.  
    Change in Focus                :      -0.601922 GLIP;)h1  
          4     0.18154684    -0.36248550 G@;I^_gN  
    Change in Focus                :       0.920681 o@g/,V $  
          5     0.28665820    -0.25737414 Kw ^tvRt'*  
    Change in Focus                :       1.253875 9,zM.g9Qv  
          6     0.21263372    -0.33139862 9 ]W4o"  
    Change in Focus                :      -0.903878 KdB9Q ;  
          7     0.40051424    -0.14351809 z@n779i  
    Change in Focus                :      -1.354815 `OmYz{*r  
          8     0.48754161    -0.05649072 @:"GgkyDl#  
    Change in Focus                :       0.215922 Kp_^ 2V?  
          9     0.40357468    -0.14045766 ``4lomz>  
    Change in Focus                :       0.281783 J=qPc}+  
         10     0.26315315    -0.28087919 y()Si\9v  
    Change in Focus                :      -1.048393 3?R QPP  
         11     0.26120585    -0.28282649 <"XDIvpc%L  
    Change in Focus                :       1.017611 \4e6\6 +  
         12     0.24033815    -0.30369419 -P3;7_}]:h  
    Change in Focus                :      -0.109292 Tx'ctd#Y  
         13     0.37164046    -0.17239188 hPHrq{YZ  
    Change in Focus                :      -0.692430 `2Oh0{x0*O  
         14     0.48597489    -0.05805744 oPA [vY  
    Change in Focus                :      -0.662040 X@n\~[.B  
         15     0.21462327    -0.32940907 qW6}^aa  
    Change in Focus                :       1.611296 d(-$ { c  
         16     0.43378226    -0.11025008 ?nAKB5=  
    Change in Focus                :      -0.640081 T>;Kq;(9  
         17     0.39321881    -0.15081353 t846:Z%[  
    Change in Focus                :       0.914906 @0>3))  
         18     0.20692530    -0.33710703 +2+wNFU  
    Change in Focus                :       0.801607 NJglONO  
         19     0.51374068    -0.03029165 5{&<X.jv  
    Change in Focus                :       0.947293 M%NapK  
         20     0.38013374    -0.16389860 X519} l3  
    Change in Focus                :       0.667010 sR1 &2hB  
    eL+L {Ac  
    Number of traceable Monte Carlo files generated: 20 $q6'VLPo  
    $ (gR^L  
    Nominal     0.54403234 G$D6#/rR  
    Best        0.54384387    Trial     2 U 0M>A  
    Worst       0.18154684    Trial     4 !F|iL  
    Mean        0.35770970 CF`fn6  
    Std Dev     0.11156454 wCb%{iowH  
    fii\&p7z  
    d^w*!<8  
    Compensator Statistics: |e@Bi#M[  
    Change in back focus: Nh[{B{k  
    Minimum            :        -1.354815 (Q$]X5L  
    Maximum            :         1.611296 .ZxH#l _  
    Mean               :         0.161872 H?=D,  
    Standard Deviation :         0.869664 oEWx9c{~$  
    ?Ze3t5Ll  
    90% >       0.20977951               !I? J^0T  
    80% >       0.22748071               ;')T}wuq  
    50% >       0.38667627               \JLiA>@@  
    20% >       0.46553746               -e{H8ro  
    10% >       0.50064115                d.7Xvx0Yww  
    995^[c1o6  
    End of Run. 2rw<]Ce  
    swDSV1alMB  
    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 R<!WW9IM  
    e XU;UO^  
    TLL.Ch|#Y  
    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 \?} {wh8  
    a91Q*X%  
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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                 ,`|KN w5  
    80% >       0.22748071                 CSU>nIE0  
    50% >       0.38667627                 vfhip"1  
    20% >       0.46553746                 RpLm'~N'  
    10% >       0.50064115 >[xQUf,p  
    TF^]^XS'  
    最后这个数值是MTF值呢，还是MTF的公差？ m$J'nA  
    73xI8  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   Zt` ,DM  
    4 qW)R{%  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : hmi15VW  
    90% >       0.20977951                 (nzzX?`nY  
    80% >       0.22748071                 5s|gKM  
    50% >       0.38667627                 P~*fZ)\}F@  
    20% >       0.46553746                 < <xJ-N  
    10% >       0.50064115 w5nRgdboy!  
    ....... 1h"B-x  
    Ar$LA"vu4  
    lwB!ti  
    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   YUH/ tl  
    Mode                : Sensitivities ?\yo~=N^  
    Sampling            : 2 $OO[C={v[  
    Nominal Criterion   : 0.54403234 nk{1z\D{  
    Test Wavelength     : 0.6328 l%IOdco#  
    (/Mc$V  
    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？ @K/I a!Lw  
    40<&0nn  
    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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