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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 \378rQU  
    ~Ei$nV  
    `iAF3:  
    h-#6av :  
    然后添加了默认公差分析,基本没变 qo90t{|c  
    mPtZO*Fc  
    Q_Q''j(r6b  
    hk(ZM#Bh  
    然后运行分析的结果如下: Pmr5S4Ka  
    @uqd.Q  
    Analysis of Tolerances ? Wr+Q  
    ( iBl   
    File : E:\光学设计资料\zemax练习\f500.ZMX 1MP~dRZ$  
    Title: 1#V_Z^OL  
    Date : TUE JUN 21 2011 \:# L)   
    szZr4y<8|1  
    Units are Millimeters. ]YnD  
    All changes are computed using linear differences. =)H.c uc  
    hLd^ agX  
    Paraxial Focus compensation only. 7 S#J>*  
    *v jmy/3  
    WARNING: Solves should be removed prior to tolerancing. 55nlg>j  
    dh`K`b4I  
    Mnemonics: q1$N>;&  
    TFRN: Tolerance on curvature in fringes. ]_mb7X>  
    TTHI: Tolerance on thickness.  N_kMK  
    TSDX: Tolerance on surface decentering in x. ??-[eB.  
    TSDY: Tolerance on surface decentering in y. ld|5TN1  
    TSTX: Tolerance on surface tilt in x (degrees). G\/zkrxmv  
    TSTY: Tolerance on surface tilt in y (degrees). o]J{{M'E  
    TIRR: Tolerance on irregularity (fringes). <Dl*l{zba  
    TIND: Tolerance on Nd index of refraction. V%7WUq  
    TEDX: Tolerance on element decentering in x. ~9,,~db  
    TEDY: Tolerance on element decentering in y. 6"L cJ%o  
    TETX: Tolerance on element tilt in x (degrees). =1FRFZI!j  
    TETY: Tolerance on element tilt in y (degrees). b(eNmu  
    )0.kv2o.  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ajbA\/\G;  
    !=*g@mgF  
    WARNING: Boundary constraints on compensators will be ignored. r_)' Ps  
    xBThq?N?  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 0rQMLx  
    Mode                : Sensitivities :KSV4>X[%a  
    Sampling            : 2 APn|\  
    Nominal Criterion   : 0.54403234 !1jBC.G1  
    Test Wavelength     : 0.6328 Q 04al=  
    )al]*[lY  
    f O}pj:  
    Fields: XY Symmetric Angle in degrees =57>!)  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 2@n{yYwy  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 Dzpq_F!;V  
    lK?uXr7^  
    Sensitivity Analysis: :T ^a&)aL%  
    !fV+z%:  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 7X`g,b!  
    Type                      Value      Criterion        Change          Value      Criterion        Change <,3a3  
    Fringe tolerance on surface 1 vONasD9At  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 du $:jN\}  
    Change in Focus                :      -0.000000                            0.000000 CmP9Q2  
    Fringe tolerance on surface 2 L4@K~8j7  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 a=|K%ii+Y  
    Change in Focus                :       0.000000                            0.000000 1jmjg~W  
    Fringe tolerance on surface 3 -V*R\,>  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 DTX0  
    Change in Focus                :      -0.000000                            0.000000 WA<v9#m  
    Thickness tolerance on surface 1 a{L%7  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 <O(4TO  
    Change in Focus                :       0.000000                            0.000000 mxvp3t \  
    Thickness tolerance on surface 2 8 `v-<J  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 `[y^ :mj  
    Change in Focus                :       0.000000                           -0.000000 !4ocZmj\  
    Decenter X tolerance on surfaces 1 through 3 aj-Km`5r}  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 YU'k#\gi*  
    Change in Focus                :       0.000000                            0.000000 =}<IfNA  
    Decenter Y tolerance on surfaces 1 through 3 [$ubNk;!z  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 nQF(vTDN  
    Change in Focus                :       0.000000                            0.000000 J@/kIrx  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ")1:F>  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 juP7P[d$qW  
    Change in Focus                :       0.000000                            0.000000 rP'me2 B  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) `Y0%c Xi3  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 U"~>jZKk  
    Change in Focus                :       0.000000                            0.000000 'NbHa!  
    Decenter X tolerance on surface 1 '9%\;  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 `_6C {<O  
    Change in Focus                :       0.000000                            0.000000 [@_Jj3`4  
    Decenter Y tolerance on surface 1 ]"pVj6O  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 v1#otrf  
    Change in Focus                :       0.000000                            0.000000 \:P>le'1  
    Tilt X tolerance on surface (degrees) 1 s2a{>II6  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 j}#w )M  
    Change in Focus                :       0.000000                            0.000000 ,=uD^n:  
    Tilt Y tolerance on surface (degrees) 1 _kC-dEGf!y  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 h! ,v/7=  
    Change in Focus                :       0.000000                            0.000000 FBG4pb9=~  
    Decenter X tolerance on surface 2 b35fs]}u-6  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Qry@ s5  
    Change in Focus                :       0.000000                            0.000000  > ^O7  
    Decenter Y tolerance on surface 2 tb 5`cube  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 mwO6g~@ `  
    Change in Focus                :       0.000000                            0.000000 qRu~$K  
    Tilt X tolerance on surface (degrees) 2 qfX6TV5J}!  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 mupT<_Y  
    Change in Focus                :       0.000000                            0.000000 :S]\0;8]  
    Tilt Y tolerance on surface (degrees) 2 s `e{}\  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 }czrj%6  
    Change in Focus                :       0.000000                            0.000000 ~ \r*  
    Decenter X tolerance on surface 3 ,S\CC{!  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 &L3M]  
    Change in Focus                :       0.000000                            0.000000 O4 w(T  
    Decenter Y tolerance on surface 3 1l9 G[o *  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 &Hrj3E  
    Change in Focus                :       0.000000                            0.000000 r[e##M  
    Tilt X tolerance on surface (degrees) 3 2bz2KB5>  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 I2XU(pYU  
    Change in Focus                :       0.000000                            0.000000 pG_;$8Hc  
    Tilt Y tolerance on surface (degrees) 3 ]iVcog"T  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 }ZYd4h|g\z  
    Change in Focus                :       0.000000                            0.000000 ^ "E^zHM(  
    Irregularity of surface 1 in fringes -+-?w|}qV  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 @?ebuj5{e  
    Change in Focus                :       0.000000                            0.000000 rD tY[  
    Irregularity of surface 2 in fringes \Zk;ikEY  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 C-xr"]#]  
    Change in Focus                :       0.000000                            0.000000 c&6 I[ R  
    Irregularity of surface 3 in fringes b\f O8{k  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 &{5,:%PXw  
    Change in Focus                :       0.000000                            0.000000 >[f?vrz  
    Index tolerance on surface 1 4>YR{  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 G+9,,`2  
    Change in Focus                :       0.000000                            0.000000 XoK:N$\}t  
    Index tolerance on surface 2 *YI98  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 VD AaYDi  
    Change in Focus                :       0.000000                           -0.000000 TT%M' 5&  
    oE @a'*.\  
    Worst offenders: @ 6\I~s(  
    Type                      Value      Criterion        Change D'>_I.  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 x%=si[P  
    TSTY   2             0.20000000     0.35349910    -0.19053324 BX/8O<s0  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 #&+{mCjs  
    TSTX   2             0.20000000     0.35349910    -0.19053324 je\Ph5"  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 W<{h,j8  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ]Ee?6]bN  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 TJd)K$O>  
    TSTX   1             0.20000000     0.42678383    -0.11724851 k:i4=5^*GX  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ,O5NLg-  
    TSTY   3             0.20000000     0.42861670    -0.11541563 W_293["lS  
    ;7*[Bcj.  
    Estimated Performance Changes based upon Root-Sum-Square method: t3WiomNCc  
    Nominal MTF                 :     0.54403234  ,i NXK  
    Estimated change            :    -0.36299231 U)TUOwF  
    Estimated MTF               :     0.18104003 `%bypHeSp  
    5PCqYN(:B  
    Compensator Statistics: e)IzQ7Zex  
    Change in back focus: _oL?*ks  
    Minimum            :        -0.000000 j a[Et/r  
    Maximum            :         0.000000 b#c:u2  
    Mean               :        -0.000000 AOZP*\k  
    Standard Deviation :         0.000000 PN%zIkbo  
    , u=`uD  
    Monte Carlo Analysis: n)/z0n!\  
    Number of trials: 20 n6=By|jRh  
    W-f=]eWg  
    Initial Statistics: Normal Distribution .Z`R^2MU  
    ,]C;sN%~}  
      Trial       Criterion        Change "s-"<&>a(  
          1     0.42804416    -0.11598818 t^-d/yKt0w  
    Change in Focus                :      -0.400171 ;<Sd~M4f  
          2     0.54384387    -0.00018847 !.$I["/=  
    Change in Focus                :       1.018470 m,28u3@r  
          3     0.44510003    -0.09893230 1#g2A0U,  
    Change in Focus                :      -0.601922 X56q-|  
          4     0.18154684    -0.36248550 T.F!+  
    Change in Focus                :       0.920681 l9~e". ~'  
          5     0.28665820    -0.25737414 h f)?1z4  
    Change in Focus                :       1.253875 CT@ jZtg0  
          6     0.21263372    -0.33139862 yu {d! {6  
    Change in Focus                :      -0.903878 X #dmo/L8  
          7     0.40051424    -0.14351809 M7\szv\Zc=  
    Change in Focus                :      -1.354815 234p9A@  
          8     0.48754161    -0.05649072 tIi&;tw]  
    Change in Focus                :       0.215922 FZ QP%]FX  
          9     0.40357468    -0.14045766 iXkF1r]i  
    Change in Focus                :       0.281783 S\EyCi+  
         10     0.26315315    -0.28087919 GAzU?a{S  
    Change in Focus                :      -1.048393 ^0 )g/`H^>  
         11     0.26120585    -0.28282649 L+F@:H6/0  
    Change in Focus                :       1.017611  ~NgA  
         12     0.24033815    -0.30369419 y1D L,%j  
    Change in Focus                :      -0.109292 5ta `%R_  
         13     0.37164046    -0.17239188 pad*oPH,  
    Change in Focus                :      -0.692430 )m+W j  
         14     0.48597489    -0.05805744 ja'T+!k  
    Change in Focus                :      -0.662040 NYUL:Tp  
         15     0.21462327    -0.32940907 ;+_:,_  
    Change in Focus                :       1.611296 ~At7 +F[  
         16     0.43378226    -0.11025008 {W`%g^Z|H  
    Change in Focus                :      -0.640081 u#fM_>ML  
         17     0.39321881    -0.15081353 MKCsv+   
    Change in Focus                :       0.914906 Ny7S  
         18     0.20692530    -0.33710703 /HEw-M9z  
    Change in Focus                :       0.801607 c):/!Q  
         19     0.51374068    -0.03029165 0o4XUW   
    Change in Focus                :       0.947293 !,uE]gwLw  
         20     0.38013374    -0.16389860 2qNt,;DQ  
    Change in Focus                :       0.667010 ;d$rdFA_  
    EWt[z.`T1  
    Number of traceable Monte Carlo files generated: 20 rKc9b<Ir  
    bj^5yX;2  
    Nominal     0.54403234 \K{ z  
    Best        0.54384387    Trial     2 0auYG><=  
    Worst       0.18154684    Trial     4 =BeygT^  
    Mean        0.35770970 zk+9'r`-D  
    Std Dev     0.11156454 ,ng Cv;s  
    pF>i-i  
    gg/-k;@ Rf  
    Compensator Statistics: := V[7n])  
    Change in back focus: rXq.DvQ  
    Minimum            :        -1.354815 J{<X 7uB  
    Maximum            :         1.611296 3&4(ZH=  
    Mean               :         0.161872 7z,C}-q  
    Standard Deviation :         0.869664 Oszj$C(jF  
    Qljpx?E  
    90% >       0.20977951               kH1~k,|\&K  
    80% >       0.22748071               /s?`&1v|r  
    50% >       0.38667627               3M`M  
    20% >       0.46553746               Lb-OsKU  
    10% >       0.50064115                #%2rP'He  
    Uc>lGo1j  
    End of Run. $wa{~'  
    hZ,_ 6mNg  
    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 ]N]!o#q}L  
    G.B2('  
    $HzBD.CF|x  
    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 W@IQ^ }E  
    ?j.,Nw4FC  
    不吝赐教
     
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    离线sansummer
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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?
    离线sansummer
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 mJnIwdW*  
    80% >       0.22748071                 #!# l45p6  
    50% >       0.38667627                 J8(lIk:e  
    20% >       0.46553746                 '<<t]kK[N  
    10% >       0.50064115 {P./==^0  
    SfyQ$$Z  
    最后这个数值是MTF值呢,还是MTF的公差? G` A4|+W"  
    ?l )[7LR4  
    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???   P@B]  
    tNI^@xdim1  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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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  : B+`g> h  
    90% >       0.20977951                  ob]w;"  
    80% >       0.22748071                 R|(a@sL  
    50% >       0.38667627                 \FaP|28h  
    20% >       0.46553746                 ;xTpE2 -~  
    10% >       0.50064115 e0 ecD3  
    ....... >t+P(*u  
    p_4<6{KEt  
    h?U O&(  
    这些数值都是MTF值
    离线天地大同
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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   \;Weizq5  
    Mode                : Sensitivities lOp`m8_=  
    Sampling            : 2 |.dRily+  
    Nominal Criterion   : 0.54403234 6S #Cl>v  
    Test Wavelength     : 0.6328 l[J8!u2Xp  
    i6Gu@( 8Q  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
    离线sansummer
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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? ,!9zrYi}  
    l^ }c!  
    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?
    离线天地大同
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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
    离线sansummer
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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?
    离线天地大同
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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