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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 <[GYLN[0Q  
    '$ef+@y  
    \Ofw8=N-2  
    s`Cy a`  
    然后添加了默认公差分析，基本没变 L^^4=ao0  
    OTZ_c1"K  
    O@iu aeEW  
    >\w&6 i~  
    然后运行分析的结果如下： y&_m 4Zw"  
    i!~'M;S  
    Analysis of Tolerances OUP?p@%]<  
    s s 3t  
    File : E:\光学设计资料\zemax练习\f500.ZMX Qo =Kqv  
    Title: $W;b{H=F  
    Date : TUE JUN 21 2011 *1@:'rJ  
    umLb+GbI4  
    Units are Millimeters. %c)[ kAU!  
    All changes are computed using linear differences.  Yav2q3  
    d1joVUYE  
    Paraxial Focus compensation only. 8q)=  
    71C42=AU  
    WARNING: Solves should be removed prior to tolerancing. [ $fJRR  
    U1_&gy @y  
    Mnemonics: T#Z%y!6  
    TFRN: Tolerance on curvature in fringes. YK{a  
    TTHI: Tolerance on thickness. xLZd!>C  
    TSDX: Tolerance on surface decentering in x. q8ImrC.'^  
    TSDY: Tolerance on surface decentering in y. ftBq^tC  
    TSTX: Tolerance on surface tilt in x (degrees). V,EF'-F  
    TSTY: Tolerance on surface tilt in y (degrees). wve=.n  
    TIRR: Tolerance on irregularity (fringes). o/o:2p.  
    TIND: Tolerance on Nd index of refraction. H6aM&r9}  
    TEDX: Tolerance on element decentering in x. n-QJ;37\  
    TEDY: Tolerance on element decentering in y. 8[ry |J  
    TETX: Tolerance on element tilt in x (degrees). D@X+{  
    TETY: Tolerance on element tilt in y (degrees). -RJE6~>'\  
    r.0oxH']  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. sCl$f7"  
    M2@^bB\J  
    WARNING: Boundary constraints on compensators will be ignored. 69#8Z+dw7  
    mDFlz1J,e  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 8&V_$+U  
    Mode                : Sensitivities H(Ms^8Vs~:  
    Sampling            : 2 t5 a7DD  
    Nominal Criterion   : 0.54403234 Lv1{k\aw  
    Test Wavelength     : 0.6328 Eaad,VBtU  
    Fl>]&x*~  
    T@^]i&  
    Fields: XY Symmetric Angle in degrees P%X-@0)  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY p$;I'  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 8Z85D  
    #ZiT-  
    Sensitivity Analysis: y|_Eu:  
    ix Z)tNz  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 0"[`>K~7a8  
    Type                      Value      Criterion        Change          Value      Criterion        Change TJ6#P<M  
    Fringe tolerance on surface 1 oN(-rWdhZ  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ED} 31L  
    Change in Focus                :      -0.000000                            0.000000 u~Tg&0V30  
    Fringe tolerance on surface 2 [;O^[Iybf:  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ZEbLL4n  
    Change in Focus                :       0.000000                            0.000000 `0#H]=$2h  
    Fringe tolerance on surface 3 Ul Mi.;/^  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 3}&ZOO   
    Change in Focus                :      -0.000000                            0.000000 &~5=K  
    Thickness tolerance on surface 1 >CgO<\  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 K^%-NyV  
    Change in Focus                :       0.000000                            0.000000 h[XGC =%  
    Thickness tolerance on surface 2 yZ}d+7T}  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 <M[U#Q~?~e  
    Change in Focus                :       0.000000                           -0.000000 Uz8hANN0_  
    Decenter X tolerance on surfaces 1 through 3 Tvf~P w  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ;)!"Ty|  
    Change in Focus                :       0.000000                            0.000000 \Mi#{0f+q  
    Decenter Y tolerance on surfaces 1 through 3 & 7QH^  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 aw}+'(?8]  
    Change in Focus                :       0.000000                            0.000000 kRIB<@{  
    Tilt X tolerance on surfaces 1 through 3 (degrees) #\If]w*j  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 >HkhAJhW  
    Change in Focus                :       0.000000                            0.000000 =;c_} VY  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) hhR aJ  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 F'J [y"~_  
    Change in Focus                :       0.000000                            0.000000 ]@xL=%   
    Decenter X tolerance on surface 1 :_d3//|  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ]jM^Z.mI+  
    Change in Focus                :       0.000000                            0.000000 9]_GNk-D  
    Decenter Y tolerance on surface 1 nbvkP  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 QV,E #(\5  
    Change in Focus                :       0.000000                            0.000000 zJ& b|L  
    Tilt X tolerance on surface (degrees) 1 ^>r^3C)_-  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 r25Z`X Z  
    Change in Focus                :       0.000000                            0.000000 jv}=&d  
    Tilt Y tolerance on surface (degrees) 1 T'rjh"C&|  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Q2~5"  
    Change in Focus                :       0.000000                            0.000000 ?=|kC*$/G  
    Decenter X tolerance on surface 2 <lFY7' aY  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 S6 }QFx  
    Change in Focus                :       0.000000                            0.000000 f?0s &Xo  
    Decenter Y tolerance on surface 2 O<,r>b,  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ,# "(Z  
    Change in Focus                :       0.000000                            0.000000 aMCO"66b  
    Tilt X tolerance on surface (degrees) 2 LR$z0rDEM  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 t;Wotfc[#0  
    Change in Focus                :       0.000000                            0.000000 - 0~IY  
    Tilt Y tolerance on surface (degrees) 2 ;A^K_w'  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 :Z2tig nL  
    Change in Focus                :       0.000000                            0.000000 >riq98Us/  
    Decenter X tolerance on surface 3 V;[p438o  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 +0#JnqH"  
    Change in Focus                :       0.000000                            0.000000 -l.pA(O  
    Decenter Y tolerance on surface 3 \C\gn]Z  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 E#h~V5Tf  
    Change in Focus                :       0.000000                            0.000000 52<~K  
    Tilt X tolerance on surface (degrees) 3 `Wf5  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 q`loOm=y  
    Change in Focus                :       0.000000                            0.000000 2lz {_9  
    Tilt Y tolerance on surface (degrees) 3 1~qm+nET\  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 k46gY7y,9  
    Change in Focus                :       0.000000                            0.000000 iK x+6v  
    Irregularity of surface 1 in fringes ;6<zjV7}  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Gc5VQ^]  
    Change in Focus                :       0.000000                            0.000000 u_'nOle K  
    Irregularity of surface 2 in fringes dIK{MA  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 H'Iq~Ft1  
    Change in Focus                :       0.000000                            0.000000 91;HiILgT  
    Irregularity of surface 3 in fringes ^-L{/'[8M  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ]GS ~i+=M  
    Change in Focus                :       0.000000                            0.000000 <$C<Ba?;?  
    Index tolerance on surface 1 OWV/kz5'H  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Qk7J[4  
    Change in Focus                :       0.000000                            0.000000 QeK{MF  
    Index tolerance on surface 2 97x%2.\:  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ]piM/v\  
    Change in Focus                :       0.000000                           -0.000000 9[f%;WaS  
    :1BM=_WwI  
    Worst offenders: l4 `^!  
    Type                      Value      Criterion        Change "w^Nu6  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 " ~n3iNkP  
    TSTY   2             0.20000000     0.35349910    -0.19053324 lu3.KOD/  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 E(/ sXji!  
    TSTX   2             0.20000000     0.35349910    -0.19053324 rys<-i(  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 C*j9Iaj  
    TSTY   1             0.20000000     0.42678383    -0.11724851 iwkJ~(5z  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 GXEcpc08  
    TSTX   1             0.20000000     0.42678383    -0.11724851 5\?3$<1 I  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 d q pgf@  
    TSTY   3             0.20000000     0.42861670    -0.11541563 Z%;)@0~f  
    \Jf9npz3  
    Estimated Performance Changes based upon Root-Sum-Square method: ;r@!a!NLB  
    Nominal MTF                 :     0.54403234 GRQ_+K  
    Estimated change            :    -0.36299231 4a 4N C  
    Estimated MTF               :     0.18104003 ~1d!hq?/q  
    THr8o V5  
    Compensator Statistics: YME[%c2x  
    Change in back focus: %6Rp,M9=  
    Minimum            :        -0.000000 iRouLd  
    Maximum            :         0.000000 aYBTrOdz  
    Mean               :        -0.000000 skK*OO 2-  
    Standard Deviation :         0.000000 /THNP 8.  
    wVQdUtmk  
    Monte Carlo Analysis: Rj&qh`  
    Number of trials: 20  9^p32G  
    W7W3DBKtSm  
    Initial Statistics: Normal Distribution uwId  
    a.CF9m5]c  
      Trial       Criterion        Change $ {@q?iol  
          1     0.42804416    -0.11598818 7 {nl..`  
    Change in Focus                :      -0.400171 CX.SYr&!R  
          2     0.54384387    -0.00018847 RCQAtBd  
    Change in Focus                :       1.018470 'Y ,1OK  
          3     0.44510003    -0.09893230 (`F|nG=X  
    Change in Focus                :      -0.601922 +>u>`|  
          4     0.18154684    -0.36248550 Y}K!`~n1S  
    Change in Focus                :       0.920681 '6+Edu~Ho)  
          5     0.28665820    -0.25737414 ki`8(u6l  
    Change in Focus                :       1.253875 Z/n3aYM  
          6     0.21263372    -0.33139862 Wge ho  
    Change in Focus                :      -0.903878 }D Z)W0RDe  
          7     0.40051424    -0.14351809 lD-V9   
    Change in Focus                :      -1.354815 7|K3WuLL  
          8     0.48754161    -0.05649072 \w3%[+c  
    Change in Focus                :       0.215922 >eRZ+|k?N  
          9     0.40357468    -0.14045766 fqN75['n  
    Change in Focus                :       0.281783 PqVW'FYe  
         10     0.26315315    -0.28087919 h)^dB,~  
    Change in Focus                :      -1.048393 uFC?_q?4\  
         11     0.26120585    -0.28282649 CJv> /#$/F  
    Change in Focus                :       1.017611 IO*l vy  
         12     0.24033815    -0.30369419 Ma>:_0I5  
    Change in Focus                :      -0.109292 T!1SMo^  
         13     0.37164046    -0.17239188 "bPCOJ[v9  
    Change in Focus                :      -0.692430 yAAG2c4(  
         14     0.48597489    -0.05805744 di--:h/  
    Change in Focus                :      -0.662040 {:,_A  
         15     0.21462327    -0.32940907 =w?M_[&K)  
    Change in Focus                :       1.611296 b~jIv:9T  
         16     0.43378226    -0.11025008 :Jjw"}SfK#  
    Change in Focus                :      -0.640081 FOc|*>aKP  
         17     0.39321881    -0.15081353 %3rTQ:X  
    Change in Focus                :       0.914906 GKiq0*/M  
         18     0.20692530    -0.33710703 Q js2hj-$  
    Change in Focus                :       0.801607 W=UqX{-j)  
         19     0.51374068    -0.03029165  oHOW5  
    Change in Focus                :       0.947293 B;SzuCW  
         20     0.38013374    -0.16389860 DCt\E/  
    Change in Focus                :       0.667010 T<f2\q8Uo=  
    8~.iuFp  
    Number of traceable Monte Carlo files generated: 20 ]7v81G5E  
    PEfE'lGj  
    Nominal     0.54403234 R$Zv0a&  
    Best        0.54384387    Trial     2 5/ tj  
    Worst       0.18154684    Trial     4 >_-!zjO8u  
    Mean        0.35770970 ]/LWrQD  
    Std Dev     0.11156454 0{-`Th+h  
    : #3OcD4  
    -xw 98  
    Compensator Statistics: C/CN '  
    Change in back focus: ax<g0=^R  
    Minimum            :        -1.354815 }iD$4\ L  
    Maximum            :         1.611296 M8\G>0Hc6  
    Mean               :         0.161872 HmhUc,EC  
    Standard Deviation :         0.869664 c/b%T  
    5.O-(eSa0&  
    90% >       0.20977951               mPckf  
    80% >       0.22748071               MJ1W*'9</W  
    50% >       0.38667627               wTHK=n\i  
    20% >       0.46553746               {EOn r1  
    10% >       0.50064115                qo6 1O\qm  
    5woIGO3X  
    End of Run. -Uzc"Lx B  
    F='Xj@&O  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 B{;11 u  
    P)Z/JHB  
    v$[ @]`  
    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 `oB'(  
    Uy(vELB  
    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                 d [\>'>  
    80% >       0.22748071                 6&i[g  
    50% >       0.38667627                 2A dX)iF@  
    20% >       0.46553746                 @#bBs9@gv  
    10% >       0.50064115 1h#w"4  
    7yY1dR<Y  
    最后这个数值是MTF值呢，还是MTF的公差？ L~^e\^sP  
    {%]NpFg#b  
    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？？？   Wwn5LlJ^  
    G/x3wR  
    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  : I'6 ed`|  
    90% >       0.20977951                 hg86#jq%  
    80% >       0.22748071                 3'gd'`Hn/  
    50% >       0.38667627                 o/i5e=9[y  
    20% >       0.46553746                 ^q4:zZZ  
    10% >       0.50064115 4n.i<K8K[  
    ....... I5|S8d<  
    %_i0go,^  
    |)>GeE  
    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   [/2@=Uh-  
    Mode                : Sensitivities !Z9ikn4A  
    Sampling            : 2 ^PCL^]W  
    Nominal Criterion   : 0.54403234 @_ tA"E  
    Test Wavelength     : 0.6328 5kL#V  
    J4R  
    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？ SUQ}^gn]  
    \2VZkVO9  
    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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