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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 0`L>t  
    5QoU&Hv  
    C@8WY  
    UPI'O %  
    然后添加了默认公差分析，基本没变 |Q _]+[  
    yA#-}Y|]b  
    QTNE.n<?  
    eGJ}';O,g  
    然后运行分析的结果如下： t:h~p-&QB  
    yF#:*Vz>  
    Analysis of Tolerances lx!9KQAM*  
    `p. O  
    File : E:\光学设计资料\zemax练习\f500.ZMX c 8 xZT  
    Title: e%O]U:Z  
    Date : TUE JUN 21 2011 )]?"H  
    vid(^2+  
    Units are Millimeters. ~dO&e=6Hk  
    All changes are computed using linear differences. *`HE$k!  
     @aC2]  
    Paraxial Focus compensation only. H!+T2<F9R  
    tLzX L *  
    WARNING: Solves should be removed prior to tolerancing. o/U"'FP  
    ~!Q\\_  
    Mnemonics: JZS#Q\JN  
    TFRN: Tolerance on curvature in fringes. 1tNmiAu  
    TTHI: Tolerance on thickness. YdI&OzaroE  
    TSDX: Tolerance on surface decentering in x. w u  
    TSDY: Tolerance on surface decentering in y. F/qx2E$*wo  
    TSTX: Tolerance on surface tilt in x (degrees). u9 yXHf  
    TSTY: Tolerance on surface tilt in y (degrees). 34$qV{Y%y  
    TIRR: Tolerance on irregularity (fringes). N){/#3  
    TIND: Tolerance on Nd index of refraction. du:%{4  
    TEDX: Tolerance on element decentering in x. 3;h%mk KQ+  
    TEDY: Tolerance on element decentering in y. [7:(e/&  
    TETX: Tolerance on element tilt in x (degrees). q["T6  
    TETY: Tolerance on element tilt in y (degrees). e{dYLQd  
    'Wn2+pd  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ?_+h+{/@B  
    #CaT0#v  
    WARNING: Boundary constraints on compensators will be ignored. > $#v\8  
    k7\h- yn{  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm qrj:H4#VB  
    Mode                : Sensitivities >**7ck  
    Sampling            : 2 '{t&!M`  
    Nominal Criterion   : 0.54403234 j(;o   
    Test Wavelength     : 0.6328 7Qc 4Oz:t  
    X8Xw'  
    B-<H8[GkG1  
    Fields: XY Symmetric Angle in degrees Y`x54_32  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY @AgV7#  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 A{!D7kwTz~  
    ft"B,  
    Sensitivity Analysis: XA$Z 7_gu3  
    2 P=c1;  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| *)2& gQ&%+  
    Type                      Value      Criterion        Change          Value      Criterion        Change Of*z9 YI  
    Fringe tolerance on surface 1 BpGK`0H  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 \*C}[D  
    Change in Focus                :      -0.000000                            0.000000 ^h:%%\2  
    Fringe tolerance on surface 2 t&r-;sH^[  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 W+'|zhn  
    Change in Focus                :       0.000000                            0.000000 Z|z+[V}[  
    Fringe tolerance on surface 3 $Y mD;  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 L0Fhjbc  
    Change in Focus                :      -0.000000                            0.000000 q0oNRAvn"  
    Thickness tolerance on surface 1 rdFeDZo&Z)  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 d +]Gw  
    Change in Focus                :       0.000000                            0.000000 vB:_|B  
    Thickness tolerance on surface 2 d0`5zd@S  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 RSNukg  
    Change in Focus                :       0.000000                           -0.000000 bOi`JJ^   
    Decenter X tolerance on surfaces 1 through 3 `xO9xo#  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 jH1!'1s|  
    Change in Focus                :       0.000000                            0.000000 N* C"+2  
    Decenter Y tolerance on surfaces 1 through 3 gX}(6RP_!  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ~olta\|  
    Change in Focus                :       0.000000                            0.000000 kO]],Vy`  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ,~!rn}MI<  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 FE)L?  
    Change in Focus                :       0.000000                            0.000000 +=5Dt7/|  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) gCMwmanX  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 eQ}o;vJN  
    Change in Focus                :       0.000000                            0.000000 A&$oiLc  
    Decenter X tolerance on surface 1 f2sv$#'  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 l>i<J1  
    Change in Focus                :       0.000000                            0.000000 {jOCz1J  
    Decenter Y tolerance on surface 1 _VeZ lk7 k  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Y6|8;2E  
    Change in Focus                :       0.000000                            0.000000 l%aiG+z%6}  
    Tilt X tolerance on surface (degrees) 1 ^_5Nh^  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 .@Z-<P"  
    Change in Focus                :       0.000000                            0.000000 ;xnJ+$//U  
    Tilt Y tolerance on surface (degrees) 1 -NG`mfu  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Lh%>> Ht{  
    Change in Focus                :       0.000000                            0.000000 Z2yZz:.'  
    Decenter X tolerance on surface 2 0 ttM_]#q  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 PXZ ZPW/  
    Change in Focus                :       0.000000                            0.000000  1k5o?'3&  
    Decenter Y tolerance on surface 2 *Ge2P3  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 W2F %E  
    Change in Focus                :       0.000000                            0.000000 6#/Riu%  
    Tilt X tolerance on surface (degrees) 2 Ip/_uDi+!Z  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 cG|ihG5)  
    Change in Focus                :       0.000000                            0.000000 9Bl c  
    Tilt Y tolerance on surface (degrees) 2 k{/2vV[`]  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 'V reO52  
    Change in Focus                :       0.000000                            0.000000 H0Q.; !^  
    Decenter X tolerance on surface 3 Rw$>()}H8  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 \X5>HPB  
    Change in Focus                :       0.000000                            0.000000 j5*W[M9W  
    Decenter Y tolerance on surface 3 .=WsB@+   
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 }c>[m,lz  
    Change in Focus                :       0.000000                            0.000000 vHY."$|H  
    Tilt X tolerance on surface (degrees) 3 Yg5m=Lis  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 c=U1/=R5  
    Change in Focus                :       0.000000                            0.000000 sLE@Cm]k  
    Tilt Y tolerance on surface (degrees) 3 =?U"#a  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 sv<U$M~)X  
    Change in Focus                :       0.000000                            0.000000 x[Xj[O  
    Irregularity of surface 1 in fringes C:77~f-+rQ  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 \vBpH'hR,'  
    Change in Focus                :       0.000000                            0.000000 $z-zscco  
    Irregularity of surface 2 in fringes Hq.ys>_  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 %&L]k>n^  
    Change in Focus                :       0.000000                            0.000000 ^^[MDjNy@  
    Irregularity of surface 3 in fringes >&K1+FSmyJ  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 2k,!P6fgl  
    Change in Focus                :       0.000000                            0.000000 fmDU  
    Index tolerance on surface 1 n3, ?klK  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ~ {sRK  
    Change in Focus                :       0.000000                            0.000000 3YyB0BMW  
    Index tolerance on surface 2 #P,mZ}G\  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 IfHB+H   
    Change in Focus                :       0.000000                           -0.000000 :T5p6:  
    _y Q*  
    Worst offenders: <Z^t^ O  
    Type                      Value      Criterion        Change qRMH[F$`  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 @D!KFJ  
    TSTY   2             0.20000000     0.35349910    -0.19053324 &8R%W"<K  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 gkdd#Nrk  
    TSTX   2             0.20000000     0.35349910    -0.19053324 >;S/$  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 a}3sG_(Y  
    TSTY   1             0.20000000     0.42678383    -0.11724851 "Jw6.q+  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 ]| oh1q  
    TSTX   1             0.20000000     0.42678383    -0.11724851 JO:40V?op  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 OO.. Y  
    TSTY   3             0.20000000     0.42861670    -0.11541563 a9 =,P  
    ;H5H7ezV  
    Estimated Performance Changes based upon Root-Sum-Square method: [gZd$9a  
    Nominal MTF                 :     0.54403234 ?MevPy`H  
    Estimated change            :    -0.36299231 FL 5u68  
    Estimated MTF               :     0.18104003 H R$\jJ  
    "j5b$T0P>  
    Compensator Statistics: vmI]N  
    Change in back focus: . W{\wk n  
    Minimum            :        -0.000000 SRq0y,d  
    Maximum            :         0.000000 |r"1 &ow5  
    Mean               :        -0.000000 @,i_ KN6C  
    Standard Deviation :         0.000000 /esSM~*H  
    jIx5_lFe  
    Monte Carlo Analysis: pqPhtWi%PJ  
    Number of trials: 20 l^x5m]Kt  
    f $MVgX  
    Initial Statistics: Normal Distribution zR2'xE*  
    5?),6o);  
      Trial       Criterion        Change )>q.!"B  
          1     0.42804416    -0.11598818 6 flc  
    Change in Focus                :      -0.400171 (KaP=t}  
          2     0.54384387    -0.00018847 * ";A~XNx  
    Change in Focus                :       1.018470 f/G YDat  
          3     0.44510003    -0.09893230 *9}2Bmojv  
    Change in Focus                :      -0.601922 ;L.@4b[lP  
          4     0.18154684    -0.36248550 T69'ta32V  
    Change in Focus                :       0.920681 hPt(7E2ke~  
          5     0.28665820    -0.25737414 wXf_2qB9  
    Change in Focus                :       1.253875 K1O0/2O  
          6     0.21263372    -0.33139862 d_BO&k<+I  
    Change in Focus                :      -0.903878 2ul!f7#E  
          7     0.40051424    -0.14351809 Wd'wL"6De  
    Change in Focus                :      -1.354815 HqXaT6#/  
          8     0.48754161    -0.05649072 ckRWVw   
    Change in Focus                :       0.215922 >IO}}USm  
          9     0.40357468    -0.14045766 9,y*kC  
    Change in Focus                :       0.281783 F,^Q'$ !  
         10     0.26315315    -0.28087919 H XF5fs  
    Change in Focus                :      -1.048393 ) 'x4#5]  
         11     0.26120585    -0.28282649 ^+cf  
    Change in Focus                :       1.017611 ETe,RY  
         12     0.24033815    -0.30369419 /7X:=~m  
    Change in Focus                :      -0.109292 'M2Jw8i  
         13     0.37164046    -0.17239188 g9OO#C>  
    Change in Focus                :      -0.692430 9|O#+_=+v  
         14     0.48597489    -0.05805744 O G#By6O  
    Change in Focus                :      -0.662040 5!,`LM9  
         15     0.21462327    -0.32940907 :|xV}  
    Change in Focus                :       1.611296 'Syq!=,  
         16     0.43378226    -0.11025008 5% C-eB  
    Change in Focus                :      -0.640081 :M(%sv</  
         17     0.39321881    -0.15081353 }./__gJ  
    Change in Focus                :       0.914906 Dt\F]\6sd  
         18     0.20692530    -0.33710703 I0oM\~#  
    Change in Focus                :       0.801607 FQSepUl  
         19     0.51374068    -0.03029165 Kr`Cr5v  
    Change in Focus                :       0.947293 B@dA?w.x  
         20     0.38013374    -0.16389860 cMxTv4|wui  
    Change in Focus                :       0.667010 *b9=&:pU(  
    :N5R.@9  
    Number of traceable Monte Carlo files generated: 20 -xtj:UO  
    zZDa7 1>  
    Nominal     0.54403234 lil1$K: i  
    Best        0.54384387    Trial     2 g83]/s+  
    Worst       0.18154684    Trial     4 tn201TDZ]=  
    Mean        0.35770970 N8;/Zd;^  
    Std Dev     0.11156454 aLTC#c%U  
    [9NzvC 9I  
    -sl] funRy  
    Compensator Statistics: "#^11o8  
    Change in back focus: ) 2C`;\/:  
    Minimum            :        -1.354815 k,O("T[  
    Maximum            :         1.611296 io^^f|  
    Mean               :         0.161872 <m"Zk k  
    Standard Deviation :         0.869664 S !cc%  
    ;_)&#X,?(  
    90% >       0.20977951               ]Ow A>fb  
    80% >       0.22748071               n%? bMDS  
    50% >       0.38667627               %g}ri8  
    20% >       0.46553746               J< BBM.^]  
    10% >       0.50064115                hrPm$`  
    !\.x7N<)0  
    End of Run. lpLjfHr  
    7HzO_u%H1  
    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?M&x  
    0dA'f0Uy\X  
    OF'y]W&  
    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 Hzh?w!Ow  
    lO>w|=<  
    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                 3:1 h:Yc<  
    80% >       0.22748071                 -E_lwK  
    50% >       0.38667627                 q_K8vGm4e  
    20% >       0.46553746                 -:]_DbF  
    10% >       0.50064115 x TEDC,B  
    |9c J O@  
    最后这个数值是MTF值呢，还是MTF的公差？ ]G m"U!h*  
     >sk vg  
    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？？？   6'+;5M!  
    D0NSzCHx  
    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  : #m %ZW3  
    90% >       0.20977951                 _Z9HOl@  
    80% >       0.22748071                 t]dtBt].:  
    50% >       0.38667627                 ([vyY}43h  
    20% >       0.46553746                 ~cC =DeX  
    10% >       0.50064115 Ph{7S43  
    ....... 2VB|a;Mo  
    |a||oyrN  
    nd~cpHQR^  
    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   HhZlHL  
    Mode                : Sensitivities pK_n}QW  
    Sampling            : 2 i -kj6N5  
    Nominal Criterion   : 0.54403234 d'bAM{R>  
    Test Wavelength     : 0.6328 2kG(\+\  
    | DB7o+4  
    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？ QYS 1.k  
    @ OSSqH  
    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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