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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 `R52{B#&/  
    ;s. 5\YZ"k  
    rnv7L^9^A  
    ;VlZd*M?  
    然后添加了默认公差分析，基本没变 iZ6C8HK&&  
    O| 6\g>ew  
    >VUQTg  
    7h#faOP  
    然后运行分析的结果如下： S*m`'  
    JBEgiQ/  
    Analysis of Tolerances AKC foJ  
    Etc?;Z[F#  
    File : E:\光学设计资料\zemax练习\f500.ZMX bZay/ Zkj  
    Title: 6`baQ!xc.  
    Date : TUE JUN 21 2011 hi D7tb=g~  
    2*q: ^  
    Units are Millimeters. V*7Z,nA  
    All changes are computed using linear differences. G1;'nwf}  
    Xm=^\K3  
    Paraxial Focus compensation only. cov#Z ux  
    Xtu`5p_Qv  
    WARNING: Solves should be removed prior to tolerancing. PUjoi@]  
    ~d7Wjn$@  
    Mnemonics: }#W`<,*rL.  
    TFRN: Tolerance on curvature in fringes. 'W?v.W &  
    TTHI: Tolerance on thickness. `\F%l?aY  
    TSDX: Tolerance on surface decentering in x. "^ 6lvZP(  
    TSDY: Tolerance on surface decentering in y. q]i(CaKh  
    TSTX: Tolerance on surface tilt in x (degrees). vMZ7uO  
    TSTY: Tolerance on surface tilt in y (degrees). ;?L!1wklA  
    TIRR: Tolerance on irregularity (fringes). "H="Ip!s  
    TIND: Tolerance on Nd index of refraction. |;.Pj 3)-  
    TEDX: Tolerance on element decentering in x. k Kp6  
    TEDY: Tolerance on element decentering in y. &<w[4z\  
    TETX: Tolerance on element tilt in x (degrees). [cQ<dVaTX  
    TETY: Tolerance on element tilt in y (degrees). ',H$zA?i  
    29iIG 'N  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. YD='M.n\  
    Y=:KM~2hv  
    WARNING: Boundary constraints on compensators will be ignored. TI[UX16Tz1  
    # NN"(I  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm xjK_zO*dLq  
    Mode                : Sensitivities si^4<$Nr%j  
    Sampling            : 2 ;N$0)2w  
    Nominal Criterion   : 0.54403234 1] %W\RHxo  
    Test Wavelength     : 0.6328 ?bt`fzX{l  
    q M_/  
    'Uko^R)(  
    Fields: XY Symmetric Angle in degrees %0NkIQ`C  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY XYb^C s;  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 'ybth  
    Ev+HWx~Y  
    Sensitivity Analysis: y^d[( c  
    =CjNtD2]  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| A{aw< P|+  
    Type                      Value      Criterion        Change          Value      Criterion        Change Xb=2/\}|f  
    Fringe tolerance on surface 1 &SjHrOG?  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 +^4BO`   
    Change in Focus                :      -0.000000                            0.000000 8R\>FNk;  
    Fringe tolerance on surface 2 tM^;?HL]  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Hbjb7Y?[  
    Change in Focus                :       0.000000                            0.000000 wc7mJxJxA  
    Fringe tolerance on surface 3 _(oP{w gB  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 L$29L:  
    Change in Focus                :      -0.000000                            0.000000 >~5lYD  
    Thickness tolerance on surface 1 kqKj7L  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 `dv}a-Q)c  
    Change in Focus                :       0.000000                            0.000000  (# 6<k  
    Thickness tolerance on surface 2 ceFsGdS  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 4d^ \l!  
    Change in Focus                :       0.000000                           -0.000000 'dIX=/RZ  
    Decenter X tolerance on surfaces 1 through 3 %XP_\lu]  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 + mfe*'AU  
    Change in Focus                :       0.000000                            0.000000 *L%6qxl`V  
    Decenter Y tolerance on surfaces 1 through 3 L$+d.=]  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 }W:*aU  
    Change in Focus                :       0.000000                            0.000000 jl.okWuiY  
    Tilt X tolerance on surfaces 1 through 3 (degrees) .D8~)ZWN  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 W.,% 0cZ  
    Change in Focus                :       0.000000                            0.000000 1R=)17'O  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) =tr1*s{  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 YgE]d?_h  
    Change in Focus                :       0.000000                            0.000000 M}Nb|V09  
    Decenter X tolerance on surface 1 <w0NPrS]  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 2;r]gT~  
    Change in Focus                :       0.000000                            0.000000 1Pk mg%+  
    Decenter Y tolerance on surface 1 @br@[RpB  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 _0'm4?"  
    Change in Focus                :       0.000000                            0.000000 }>MP{67Dm  
    Tilt X tolerance on surface (degrees) 1 hLb;5u&!kW  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 g .64Id  
    Change in Focus                :       0.000000                            0.000000 x9&-(kBU  
    Tilt Y tolerance on surface (degrees) 1 |@ikx{W  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 tg.|$n  
    Change in Focus                :       0.000000                            0.000000 [YC=d1F5  
    Decenter X tolerance on surface 2 zRwb"  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Yim{U:F  
    Change in Focus                :       0.000000                            0.000000 ]43alf F#  
    Decenter Y tolerance on surface 2 ^)&Ly_xrU  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 i 8l./Yt/  
    Change in Focus                :       0.000000                            0.000000 -Y*VgoK%  
    Tilt X tolerance on surface (degrees) 2 &qJPwO  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ;% 2wGT  
    Change in Focus                :       0.000000                            0.000000 s %eyW _  
    Tilt Y tolerance on surface (degrees) 2 iM:yX=>a  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 F-_%>KJS  
    Change in Focus                :       0.000000                            0.000000 =%!e(N'p  
    Decenter X tolerance on surface 3 MaZM%W8Z  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 <,\ `Psa)N  
    Change in Focus                :       0.000000                            0.000000 uxWFM $  
    Decenter Y tolerance on surface 3 OE_ QInb<  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 yJ%t^ X_  
    Change in Focus                :       0.000000                            0.000000 !C Vuw  
    Tilt X tolerance on surface (degrees) 3 "mP&8y 9F  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 _|N}4a  
    Change in Focus                :       0.000000                            0.000000 /:bKqAz;M  
    Tilt Y tolerance on surface (degrees) 3 ,zQo {.  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 _eGT2,D5r  
    Change in Focus                :       0.000000                            0.000000 v @:~mwy  
    Irregularity of surface 1 in fringes FY$fV"s  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 j5PL{6  
    Change in Focus                :       0.000000                            0.000000 m23+kj)+VY  
    Irregularity of surface 2 in fringes rJ'/\Hh5P  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Ng\/)^  
    Change in Focus                :       0.000000                            0.000000 Ck: 9gn  
    Irregularity of surface 3 in fringes ?a S%  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 A]7<'el=  
    Change in Focus                :       0.000000                            0.000000 {jjSJIV1  
    Index tolerance on surface 1 0axxQ!Ivx  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ^$!987"  
    Change in Focus                :       0.000000                            0.000000 x<)G( Xe*  
    Index tolerance on surface 2 !BDUv(  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 wu A^'T  
    Change in Focus                :       0.000000                           -0.000000 - a y5  
    @}WNKS&m  
    Worst offenders: MU'@2c  
    Type                      Value      Criterion        Change :p' VbQZ{  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ~3gru>qI&  
    TSTY   2             0.20000000     0.35349910    -0.19053324 0n.S,3|  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 9M_(He -  
    TSTX   2             0.20000000     0.35349910    -0.19053324 98fu>>*G{  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ` @8`qXg  
    TSTY   1             0.20000000     0.42678383    -0.11724851 EM@ ;3.IO  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 '0:i<`qv#g  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Ow3P-UzU3  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 #Z\ O}<  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ,vV ]"f  
    SVagT'BB  
    Estimated Performance Changes based upon Root-Sum-Square method: nU(DYHc+l  
    Nominal MTF                 :     0.54403234 V  }>n  
    Estimated change            :    -0.36299231 Bn?:w\%Ue  
    Estimated MTF               :     0.18104003 m 41t(i  
    XF|WCZUnY%  
    Compensator Statistics: G/vC~6x  
    Change in back focus: 9AHSs,.t  
    Minimum            :        -0.000000 t|V0x3X  
    Maximum            :         0.000000 . w H*sb  
    Mean               :        -0.000000 vfcb:x  
    Standard Deviation :         0.000000 ; dd Q/  
    JqCc;Cbd  
    Monte Carlo Analysis: Rrg8{DZhv  
    Number of trials: 20 [iS,#w` 5  
    w%dL 8k  
    Initial Statistics: Normal Distribution I;7nb4]AmF  
    w\w(U  
      Trial       Criterion        Change :m'+tGs  
          1     0.42804416    -0.11598818 A5fwAB  
    Change in Focus                :      -0.400171 "CQw/qZw  
          2     0.54384387    -0.00018847 MgJ36zM  
    Change in Focus                :       1.018470 Q6 ?z_0  
          3     0.44510003    -0.09893230 ,Q/Ac{C  
    Change in Focus                :      -0.601922 ~GJN@ka4%  
          4     0.18154684    -0.36248550 :?Y$bX}a  
    Change in Focus                :       0.920681 @ {#mpDX  
          5     0.28665820    -0.25737414 g> S*<  
    Change in Focus                :       1.253875 AW,OH SXh6  
          6     0.21263372    -0.33139862 DNkWOY#{  
    Change in Focus                :      -0.903878 ?":'O#E  
          7     0.40051424    -0.14351809 !:CJPM6j3  
    Change in Focus                :      -1.354815 ]XA4;7  
          8     0.48754161    -0.05649072 % UZVb V  
    Change in Focus                :       0.215922 ir16   
          9     0.40357468    -0.14045766 xd-XWXc  
    Change in Focus                :       0.281783 s%pfkoOY%  
         10     0.26315315    -0.28087919 k+^'?D--'P  
    Change in Focus                :      -1.048393 o.-C|IXG  
         11     0.26120585    -0.28282649 re &E{  
    Change in Focus                :       1.017611 ,xI%A, (,;  
         12     0.24033815    -0.30369419 is?2DcSl5  
    Change in Focus                :      -0.109292 [xb]Wf  
         13     0.37164046    -0.17239188 X|DO~{-au  
    Change in Focus                :      -0.692430 #~L h#  
         14     0.48597489    -0.05805744 J*fBZ.NO  
    Change in Focus                :      -0.662040 ?!VIS>C(  
         15     0.21462327    -0.32940907 Pw0Ci  
    Change in Focus                :       1.611296 <3okiV=ox  
         16     0.43378226    -0.11025008 =gh`JN6  
    Change in Focus                :      -0.640081 &~e$:8 +  
         17     0.39321881    -0.15081353 ? 1*m,;Z  
    Change in Focus                :       0.914906 1 " #*)MF  
         18     0.20692530    -0.33710703 " =] -%B  
    Change in Focus                :       0.801607 up '  
         19     0.51374068    -0.03029165 =PHIpFIuk  
    Change in Focus                :       0.947293 o4b~4 h{%  
         20     0.38013374    -0.16389860 !ZRs;UZ>o  
    Change in Focus                :       0.667010 TBrGA E  
    6t'l(E +  
    Number of traceable Monte Carlo files generated: 20 D4JLtB'=  
    f.B>&%JRZ  
    Nominal     0.54403234 ra N)8w}-  
    Best        0.54384387    Trial     2 A'&n5)tb  
    Worst       0.18154684    Trial     4 9Z5D\yv?H  
    Mean        0.35770970 mqff]m  
    Std Dev     0.11156454 @4$\ 5 %j  
    +>~?m*$  
    NS)}6OI3~"  
    Compensator Statistics: $_H`   
    Change in back focus: <#GB[kQa  
    Minimum            :        -1.354815 COzyG.R.  
    Maximum            :         1.611296 fF vF\  
    Mean               :         0.161872 '_k+WH&  
    Standard Deviation :         0.869664 `1OgYs  
    wCf~O'XLw  
    90% >       0.20977951               xM[Vc  
    80% >       0.22748071               P + "Y  
    50% >       0.38667627               /walu+]h  
    20% >       0.46553746               jOpcV|2  
    10% >       0.50064115                VQ5nq'{v  
    I\~ G|B  
    End of Run. ?Iyo9&1&  
    G 0O#/%%  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 NLPkh,T:  
    v[plT2"s  
    #GDe0 8rOw  
    是大于0.6左右的，难道我按照这个默认的公差来加工的话，只有10%的才可能大于0.5？那太低了啊，请问这该怎么进行进一步处理。或者之前哪有问题 + Q=1AXe  
    ]ul$*  
    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                 2z\zh[(w  
    80% >       0.22748071                 xss`Y,5?  
    50% >       0.38667627                 %IC73?  
    20% >       0.46553746                 +f*OliMD  
    10% >       0.50064115 f2,jh}4  
    K'K2X-E  
    最后这个数值是MTF值呢，还是MTF的公差？ +)2s-A f-  
    #2r}?hP/m  
    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？？？   >#,G}xf  
    Ag F,aZU  
    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  : 9;veuX#(  
    90% >       0.20977951                 cq$i  
    80% >       0.22748071                 rD*sl}  
    50% >       0.38667627                 >Jp:O 7  
    20% >       0.46553746                 x:nKfY5  
    10% >       0.50064115 =9j8cC5y  
    ....... J9=m]R8T  
    9]e V?yoA8  
    yrR1[aT  
    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   +=:#wzK@  
    Mode                : Sensitivities %DdJ ^qHI  
    Sampling            : 2 Op_RzZP`  
    Nominal Criterion   : 0.54403234 ezMI \r6  
    Test Wavelength     : 0.6328 IV)<5'v  
    P><o,s"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？ D#o}cC.  
    $5*WLG&AK  
    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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