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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 f5AjJYq1  
    JF&$t}  
    H,fZ!8(A_)  
    i<kD  
    然后添加了默认公差分析，基本没变 4fk8*{Y  
    58\&/lYW  
    [qUN4x5b  
    klg25#t  
    然后运行分析的结果如下： 6tHO!`}1  
    fZ04!R  
    Analysis of Tolerances v\16RD  
    LEMfG~Czq  
    File : E:\光学设计资料\zemax练习\f500.ZMX F:@70(<w%  
    Title: 9{k97D/  
    Date : TUE JUN 21 2011 ]^':Bmq  
    *_a@z1  
    Units are Millimeters. C2LL|jp*  
    All changes are computed using linear differences. gb ^?l~SS  
    IW 21T   
    Paraxial Focus compensation only. m(RXJORI  
    @1.QEyXG  
    WARNING: Solves should be removed prior to tolerancing. B~o\+n  
    {!6/x9>  
    Mnemonics: ,@1p$n  
    TFRN: Tolerance on curvature in fringes. jK \T|vGJa  
    TTHI: Tolerance on thickness. d \x7Zw>  
    TSDX: Tolerance on surface decentering in x. @1*ohdHH  
    TSDY: Tolerance on surface decentering in y. 4wC+S9I#E^  
    TSTX: Tolerance on surface tilt in x (degrees). ?]D"k4  
    TSTY: Tolerance on surface tilt in y (degrees). yjfat&$  
    TIRR: Tolerance on irregularity (fringes). ~P~  
    TIND: Tolerance on Nd index of refraction. 'RRmIx2X  
    TEDX: Tolerance on element decentering in x. 5N%93{L  
    TEDY: Tolerance on element decentering in y. :RoBl3X=  
    TETX: Tolerance on element tilt in x (degrees). }cT_qqw(f%  
    TETY: Tolerance on element tilt in y (degrees). % K(<$!  
    nKW*Y}VO  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. >:D j\"o  
    !x!07`+^u  
    WARNING: Boundary constraints on compensators will be ignored. t]7&\ihZi~  
    tOfg?)h{dc  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm O@p]KSfk  
    Mode                : Sensitivities )Ke*JJaq  
    Sampling            : 2 $O9^SB  
    Nominal Criterion   : 0.54403234 (`y*V;o4  
    Test Wavelength     : 0.6328 O'Js}  
    sB;@>NY  
    CPNL 94x  
    Fields: XY Symmetric Angle in degrees KII *az  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY V(Ub!n:j  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 '1M7M(va  
    3p0LN'q]A  
    Sensitivity Analysis: ]\7]%(  
    }CeCc0M  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| cA%%IL$R  
    Type                      Value      Criterion        Change          Value      Criterion        Change e{m2l2Tx:  
    Fringe tolerance on surface 1 ]X I*Wsn  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 r*Yi1j/  
    Change in Focus                :      -0.000000                            0.000000 a4irokJv#  
    Fringe tolerance on surface 2 @}u9Rn*d;  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ]('D^Ro  
    Change in Focus                :       0.000000                            0.000000 `FoxP  
    Fringe tolerance on surface 3 H^YSJ 6  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 `w]s;G[  
    Change in Focus                :      -0.000000                            0.000000 6R=W}q4  
    Thickness tolerance on surface 1 mdRU^n  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 *zr(Zv  
    Change in Focus                :       0.000000                            0.000000 N^3N[lD{  
    Thickness tolerance on surface 2 ;qrB\j"  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 E9~Ghx.   
    Change in Focus                :       0.000000                           -0.000000 9W(dmde>  
    Decenter X tolerance on surfaces 1 through 3 _cXqAo  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 -wjN"g<  
    Change in Focus                :       0.000000                            0.000000 *4V=z#  
    Decenter Y tolerance on surfaces 1 through 3 &L^+BQ`O?  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ]\!?qsT3}  
    Change in Focus                :       0.000000                            0.000000 Q[nEsYP  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 3-&QRR#p  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ?Wz8[u  
    Change in Focus                :       0.000000                            0.000000 R~Ne|V2  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ztw@Y|<2  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ,T2G~^0  
    Change in Focus                :       0.000000                            0.000000 `QXErw  
    Decenter X tolerance on surface 1 JU4q zi  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Rz.?i+  
    Change in Focus                :       0.000000                            0.000000 1Z9qjV%^  
    Decenter Y tolerance on surface 1 %Ah^E$&n2  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 >uSy  
    Change in Focus                :       0.000000                            0.000000 KQ~i<1&j  
    Tilt X tolerance on surface (degrees) 1 ELj\[&U  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 uvrB5=u  
    Change in Focus                :       0.000000                            0.000000 /kfgx{jZ  
    Tilt Y tolerance on surface (degrees) 1 C+TI]{t  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 gSh+}r<7  
    Change in Focus                :       0.000000                            0.000000 d+'p@!W_  
    Decenter X tolerance on surface 2 cJrmm2.0kD  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 l(02W  
    Change in Focus                :       0.000000                            0.000000 +(h\fm7*-  
    Decenter Y tolerance on surface 2 5F~'gLH/F-  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 7x@A%2J  
    Change in Focus                :       0.000000                            0.000000 o#skR4lwe  
    Tilt X tolerance on surface (degrees) 2 7k rUKYVo  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 62Z#Y Q}x  
    Change in Focus                :       0.000000                            0.000000 _ A=$oVe  
    Tilt Y tolerance on surface (degrees) 2 R=|{n'n$0|  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Xwhui4'w  
    Change in Focus                :       0.000000                            0.000000 RRI"d~~F6  
    Decenter X tolerance on surface 3 C_7+a@?B  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 hC\6- 0u  
    Change in Focus                :       0.000000                            0.000000 '#&os`mQ  
    Decenter Y tolerance on surface 3 f\jLqZY  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 kOed ]>H  
    Change in Focus                :       0.000000                            0.000000 *FMMjz  
    Tilt X tolerance on surface (degrees) 3 }b-g*dn]5  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 (_"*NY0  
    Change in Focus                :       0.000000                            0.000000 lR(+tj)9uO  
    Tilt Y tolerance on surface (degrees) 3 D ^x-^6^  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 VSSu &Q  
    Change in Focus                :       0.000000                            0.000000 FAj)OTI2S  
    Irregularity of surface 1 in fringes RS^lKJ1 U  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 iB498t  
    Change in Focus                :       0.000000                            0.000000 i(NdGL#P  
    Irregularity of surface 2 in fringes ;S>])5<  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 >Vwc3d  
    Change in Focus                :       0.000000                            0.000000 jJ5W>Q1mK$  
    Irregularity of surface 3 in fringes %;rHrDP(>  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 F 9@h|#an  
    Change in Focus                :       0.000000                            0.000000 u4/kR  
    Index tolerance on surface 1 h"/< ?3{  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 D`$hPYK|_  
    Change in Focus                :       0.000000                            0.000000 W`u[h0\c  
    Index tolerance on surface 2 P9vA7[  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ]VD|xm:kj  
    Change in Focus                :       0.000000                           -0.000000 0DJ+I  
    fP(d8xTx2y  
    Worst offenders: Y$?9Zkp>  
    Type                      Value      Criterion        Change iy%ZQ[Un  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ;oc&Hb  
    TSTY   2             0.20000000     0.35349910    -0.19053324 hBBUw0"  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 o*o/q],C9-  
    TSTX   2             0.20000000     0.35349910    -0.19053324 HxIIO[h  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 !y@6Mm  
    TSTY   1             0.20000000     0.42678383    -0.11724851 H kQ) n3  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 rv|)n>m  
    TSTX   1             0.20000000     0.42678383    -0.11724851 s;6CExH  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 <OIIoB?t  
    TSTY   3             0.20000000     0.42861670    -0.11541563 orjj' +;X  
    U15H@h  
    Estimated Performance Changes based upon Root-Sum-Square method: :>Ay^{vf=  
    Nominal MTF                 :     0.54403234 njWL U!  
    Estimated change            :    -0.36299231 &FF"nE*  
    Estimated MTF               :     0.18104003 `.i!NBA'6  
    #g]vc_V  
    Compensator Statistics: ;N 0~;I  
    Change in back focus: "CI=`=  
    Minimum            :        -0.000000 .8by"?**  
    Maximum            :         0.000000 6I4oi@hZz  
    Mean               :        -0.000000 'LO^<  
    Standard Deviation :         0.000000 s]f6/x/~  
    Y\$ySvZ0  
    Monte Carlo Analysis: $7rq3y  
    Number of trials: 20 >kW@~WDMu  
    HBu[gh;b  
    Initial Statistics: Normal Distribution @n{JM7ctJ  
    k\NMy#]Zt  
      Trial       Criterion        Change i:OK8Q{VI  
          1     0.42804416    -0.11598818 \uaJ @{Vug  
    Change in Focus                :      -0.400171 CnG+Mc^  
          2     0.54384387    -0.00018847 Y07ZB'K  
    Change in Focus                :       1.018470 GJoS #s  
          3     0.44510003    -0.09893230 ! q M=a3  
    Change in Focus                :      -0.601922 kNobl  
          4     0.18154684    -0.36248550 IVA mV!.z  
    Change in Focus                :       0.920681 @NNq z  
          5     0.28665820    -0.25737414 i;_tI#:A  
    Change in Focus                :       1.253875 G}ob<`o|"  
          6     0.21263372    -0.33139862 VB, ?Mo}R  
    Change in Focus                :      -0.903878 `s8{C b=}1  
          7     0.40051424    -0.14351809 mjKS{  
    Change in Focus                :      -1.354815 3%%o?8ES  
          8     0.48754161    -0.05649072 Y]B)'[=h  
    Change in Focus                :       0.215922 7Z-O_h3;)@  
          9     0.40357468    -0.14045766 aPm`^ q  
    Change in Focus                :       0.281783 x6e}( &p*  
         10     0.26315315    -0.28087919 ,Q HU_jt  
    Change in Focus                :      -1.048393 d ysC4DS  
         11     0.26120585    -0.28282649 &I (#Wy3  
    Change in Focus                :       1.017611 6 1F(<!  
         12     0.24033815    -0.30369419 !3*(N8_|#  
    Change in Focus                :      -0.109292 tavpq.0O  
         13     0.37164046    -0.17239188 \ywXi~+kUv  
    Change in Focus                :      -0.692430 n8".XS  
         14     0.48597489    -0.05805744 DUC#NZgw  
    Change in Focus                :      -0.662040 C'o64+W^  
         15     0.21462327    -0.32940907 'gPzm|f|t@  
    Change in Focus                :       1.611296 L>SjllY  
         16     0.43378226    -0.11025008 \<y#R~7s  
    Change in Focus                :      -0.640081 ,Qe?8En[  
         17     0.39321881    -0.15081353 ecCr6)  
    Change in Focus                :       0.914906 YW60q0:  
         18     0.20692530    -0.33710703 X0haj~o[  
    Change in Focus                :       0.801607 `m!j$,c.  
         19     0.51374068    -0.03029165 Ns7(j-  
    Change in Focus                :       0.947293 t\%HX.8[;%  
         20     0.38013374    -0.16389860 PGLplXb#[S  
    Change in Focus                :       0.667010 2IKnhBSV3  
    DW_1,:,?7l  
    Number of traceable Monte Carlo files generated: 20 dVi!Q@y+  
    "6us#T  
    Nominal     0.54403234 nysUZB  
    Best        0.54384387    Trial     2 5 ({t4dm  
    Worst       0.18154684    Trial     4 EB2!HpuQ3  
    Mean        0.35770970 a6WI170^1  
    Std Dev     0.11156454 /q5v"iX]T  
    RkBb$q9F]  
    JQ6zVS2SSS  
    Compensator Statistics: 9&` 2V  
    Change in back focus: 7,lq}a8z  
    Minimum            :        -1.354815 d [V;&U  
    Maximum            :         1.611296 [5+}rwm&W  
    Mean               :         0.161872 j+["JXy  
    Standard Deviation :         0.869664 Ux}(?Z  
    pnbIiyV  
    90% >       0.20977951               sSi6wO$  
    80% >       0.22748071               Z3& _  
    50% >       0.38667627               L&%s[  
    20% >       0.46553746               +E.GLn2 /  
    10% >       0.50064115                Q^e}?v%=%3  
    tjluk  
    End of Run. BC&9fr  
    D~$r\ ]av  
    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 }#Qc \eud  
    kT'u1q$3Vo  
    Gq }U|Z  
    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 ;o 0&`b?  
    s#tZg  
    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                 .%Ta]!0  
    80% >       0.22748071                 -!N&OZ+R   
    50% >       0.38667627                 nx^]>w  
    20% >       0.46553746                 3rcKzS7  
    10% >       0.50064115 .G)(0z("s  
    <B6&I$Wc+  
    最后这个数值是MTF值呢，还是MTF的公差？ kLn i{IYN7  
    .72S oT  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   P3nb2.  
    X '`~s}vGO  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : n[]tXrhU  
    90% >       0.20977951                 p8\zG|b5  
    80% >       0.22748071                 K,w"_T  
    50% >       0.38667627                 y-j\zK  
    20% >       0.46553746                 @~#Ym1{W  
    10% >       0.50064115 B7]C]=${m  
    ....... t\ 7~S&z  
    aS pWsT  
    w^#L9i'v'  
    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   ^RP)>d9Xp{  
    Mode                : Sensitivities gCN$}  
    Sampling            : 2 |<Gl91  
    Nominal Criterion   : 0.54403234 g"L|n7_b  
    Test Wavelength     : 0.6328 Q\WC+,_%  
    ^kgBa27  
    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？ t(+) #  
    yY&3p1AxW]  
    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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