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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 C):d9OI?  
    1[l>D1F?  
    n6 G&^Oj  
    ? ~Zrd  
    然后添加了默认公差分析，基本没变 ?Q)Z..7  
    udGGDH  
    Z]TVH8%|k  
    l _ O~v?  
    然后运行分析的结果如下： rhTk}2@h  
    +&,\ J9'B  
    Analysis of Tolerances 6wB>-/'Y  
    xD# I&.  
    File : E:\光学设计资料\zemax练习\f500.ZMX f*vk1dS:*3  
    Title: X-$td~r  
    Date : TUE JUN 21 2011 9yo[T(8  
     #>jH[Q  
    Units are Millimeters. :EwA$`/  
    All changes are computed using linear differences. iFG5%>5F  
    X&s\_jQ  
    Paraxial Focus compensation only. htYrv5q=M  
    FRt/{(jro  
    WARNING: Solves should be removed prior to tolerancing. ^3|$wB=  
    4sBoD=e  
    Mnemonics: Kw0V4UF  
    TFRN: Tolerance on curvature in fringes. ]8>UII,US  
    TTHI: Tolerance on thickness. MD4 j~q\ g  
    TSDX: Tolerance on surface decentering in x. DG*o w^  
    TSDY: Tolerance on surface decentering in y. +N$7=oGC  
    TSTX: Tolerance on surface tilt in x (degrees). Jf<yTAm  
    TSTY: Tolerance on surface tilt in y (degrees). $lAb6e$n  
    TIRR: Tolerance on irregularity (fringes). \G=R hx f  
    TIND: Tolerance on Nd index of refraction. jfPJ5]Z  
    TEDX: Tolerance on element decentering in x. ICbdKgLz  
    TEDY: Tolerance on element decentering in y. /B@% pq  
    TETX: Tolerance on element tilt in x (degrees). qb> r\bc  
    TETY: Tolerance on element tilt in y (degrees). mUyv+n,  
    jnp6qpY{  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. >?W;>EUH  
    d)1sP0Z_@  
    WARNING: Boundary constraints on compensators will be ignored. z!C4>,  
    H.8CwsfP  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm |vDoqlW  
    Mode                : Sensitivities "8iiRzt#  
    Sampling            : 2 R^M (fC  
    Nominal Criterion   : 0.54403234 zg Y*|{4Sl  
    Test Wavelength     : 0.6328 0/P-> n~  
    bC4* w O  
    f93rY<  
    Fields: XY Symmetric Angle in degrees ,cy/fW  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY AzO3(1:  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ]7S7CVDk4  
    $ l sRg:J  
    Sensitivity Analysis: ok%a|Zz+]  
    #D LT-G0  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| v8[ek@  
    Type                      Value      Criterion        Change          Value      Criterion        Change D0y,TF  
    Fringe tolerance on surface 1 },EUcVXk  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 _h=< _Z  
    Change in Focus                :      -0.000000                            0.000000 @7l=+`.i  
    Fringe tolerance on surface 2 lmtQr5U  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 oF b mz*  
    Change in Focus                :       0.000000                            0.000000 $:u7Dv}\  
    Fringe tolerance on surface 3 aEFe!_QY  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 $Y 4ch ko  
    Change in Focus                :      -0.000000                            0.000000 @t; O"q'|  
    Thickness tolerance on surface 1 vgQhdtt  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 %<J(lC9,C  
    Change in Focus                :       0.000000                            0.000000 j&[3Be'pQ  
    Thickness tolerance on surface 2 oY2?W  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 FM"GK '  
    Change in Focus                :       0.000000                           -0.000000 Pvg  
    Decenter X tolerance on surfaces 1 through 3 *4hOCQ[  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 M,_^hm7  
    Change in Focus                :       0.000000                            0.000000 1f@U :<:  
    Decenter Y tolerance on surfaces 1 through 3 o.A} ``  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 iZ.&q 6  
    Change in Focus                :       0.000000                            0.000000 $;)noYo  
    Tilt X tolerance on surfaces 1 through 3 (degrees) k$0|^GL8  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 4-d99|mv  
    Change in Focus                :       0.000000                            0.000000 Y6f+__O  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) q(&^9"  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 q0b`HD  
    Change in Focus                :       0.000000                            0.000000 (J^Lqh_  
    Decenter X tolerance on surface 1 ?`T6CRZhr  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 71 L\t3fG  
    Change in Focus                :       0.000000                            0.000000 rq'##`H  
    Decenter Y tolerance on surface 1 ^aD/ .  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 J]|6l/i  
    Change in Focus                :       0.000000                            0.000000 $ gr6  
    Tilt X tolerance on surface (degrees) 1 `hK>bHj  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ek(kY6x:  
    Change in Focus                :       0.000000                            0.000000 D,GPn%Wqi  
    Tilt Y tolerance on surface (degrees) 1 h$aew63  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 7>t$<J  
    Change in Focus                :       0.000000                            0.000000 i^yH?bH @~  
    Decenter X tolerance on surface 2 gf3u0' $  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 +9 16ZPk  
    Change in Focus                :       0.000000                            0.000000 liugaRO8J  
    Decenter Y tolerance on surface 2 "9U+h2#]  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 eHR&N.2  
    Change in Focus                :       0.000000                            0.000000 BYr_Lz|T  
    Tilt X tolerance on surface (degrees) 2 L.IoGUxD  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 $/<"Si&(  
    Change in Focus                :       0.000000                            0.000000 ;9p#xW6  
    Tilt Y tolerance on surface (degrees) 2 f74%YY  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 _#J_$CE#  
    Change in Focus                :       0.000000                            0.000000 As6)_8w  
    Decenter X tolerance on surface 3 !!-}ttFA  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 QLF,/"  
    Change in Focus                :       0.000000                            0.000000 Wk\mgGn+  
    Decenter Y tolerance on surface 3 |c 06ix;).  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 { .aK{ V  
    Change in Focus                :       0.000000                            0.000000 &AQg'|  
    Tilt X tolerance on surface (degrees) 3 'B:Z=0{>N  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 y"|K |QT  
    Change in Focus                :       0.000000                            0.000000 #uD)0zdw  
    Tilt Y tolerance on surface (degrees) 3 ]HJ{dcF  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ;1*m} uNz  
    Change in Focus                :       0.000000                            0.000000 r6F{  
    Irregularity of surface 1 in fringes Xb(CH#*{z  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 HQ|o%9~  
    Change in Focus                :       0.000000                            0.000000 F.~n  
    Irregularity of surface 2 in fringes _S9rF-9G]  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 5';/@M  
    Change in Focus                :       0.000000                            0.000000 1AV1d%F  
    Irregularity of surface 3 in fringes jy\W_CT  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ?Kx6Sf<i  
    Change in Focus                :       0.000000                            0.000000 A6?qIy  
    Index tolerance on surface 1 AkYupP2]v  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 xQNw&'|UU  
    Change in Focus                :       0.000000                            0.000000 *<`7|BH3  
    Index tolerance on surface 2 vHs>ba$"  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ? -v  
    Change in Focus                :       0.000000                           -0.000000 VZT6;1TD$8  
    m%e^&N#%6r  
    Worst offenders: 3o+KP[A  
    Type                      Value      Criterion        Change qy7hkq.uX  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 bc3|;O  
    TSTY   2             0.20000000     0.35349910    -0.19053324 fs2m N1  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 H$NP1^5!  
    TSTX   2             0.20000000     0.35349910    -0.19053324 HpB!a,R6B  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 88Fb1!a5Z  
    TSTY   1             0.20000000     0.42678383    -0.11724851 2gQY8h8  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 8Zcol$XS'  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ! 6p>P4TT  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 4o1Q7  
    TSTY   3             0.20000000     0.42861670    -0.11541563 Ez06:]Jd  
    +G*"jI8W  
    Estimated Performance Changes based upon Root-Sum-Square method: tyc8{t#Z  
    Nominal MTF                 :     0.54403234 );Tx5Z}  
    Estimated change            :    -0.36299231 3+CSQb8  
    Estimated MTF               :     0.18104003 ?8Hn {3X  
    QRsqPh&-  
    Compensator Statistics: r+imn&FK8  
    Change in back focus: -vyIOH,  
    Minimum            :        -0.000000 !7A"vTs  
    Maximum            :         0.000000 =]=B}L `  
    Mean               :        -0.000000 "-G&=(  
    Standard Deviation :         0.000000 U>/<6 Wd  
    @rPI$ia1~  
    Monte Carlo Analysis: > ]>0KQfO  
    Number of trials: 20 T{_1c oL  
    J|n(dVen/  
    Initial Statistics: Normal Distribution .yZK.[x4  
    [:AB$l*  
      Trial       Criterion        Change 6!4';2Q  
          1     0.42804416    -0.11598818 >}-~rZ  
    Change in Focus                :      -0.400171 j`>?"1e@x  
          2     0.54384387    -0.00018847  5Waw?1GL  
    Change in Focus                :       1.018470 >pgQb9 T+_  
          3     0.44510003    -0.09893230 ?"()>PJx  
    Change in Focus                :      -0.601922 ?F!EB4E\y}  
          4     0.18154684    -0.36248550 P#AAOSlLV  
    Change in Focus                :       0.920681 \BN|?r$a  
          5     0.28665820    -0.25737414 ~Y\QGuT  
    Change in Focus                :       1.253875 4st~3,lR$  
          6     0.21263372    -0.33139862 9uuta4&uI  
    Change in Focus                :      -0.903878 p@#]mVJ>9  
          7     0.40051424    -0.14351809 99J+$A1  
    Change in Focus                :      -1.354815 CkRyzF  
          8     0.48754161    -0.05649072 %GM>u2baw  
    Change in Focus                :       0.215922 n"(7dl?  
          9     0.40357468    -0.14045766 A;odVaH7  
    Change in Focus                :       0.281783 q!ee g  
         10     0.26315315    -0.28087919 l*$WX=h6n  
    Change in Focus                :      -1.048393 bBA$}bv  
         11     0.26120585    -0.28282649 =Nw2;TkB[  
    Change in Focus                :       1.017611 `2>XH:+7F  
         12     0.24033815    -0.30369419 uZ@-e|qto  
    Change in Focus                :      -0.109292 >NJjS8f5  
         13     0.37164046    -0.17239188 \s,Iz[0Vfz  
    Change in Focus                :      -0.692430 E|Q{]&$;Z"  
         14     0.48597489    -0.05805744 AnRlH  
    Change in Focus                :      -0.662040 -oU@D  
         15     0.21462327    -0.32940907 E^7C _JP  
    Change in Focus                :       1.611296 7 n\mj\  
         16     0.43378226    -0.11025008 Y [4vRzc  
    Change in Focus                :      -0.640081 : aHcPc:  
         17     0.39321881    -0.15081353 -UJ?L  
    Change in Focus                :       0.914906 b2G2c L-(  
         18     0.20692530    -0.33710703 Ud$Q0m&  
    Change in Focus                :       0.801607 ~D*b3K 8X  
         19     0.51374068    -0.03029165 X2i*iW<  
    Change in Focus                :       0.947293 |pBMrN+is  
         20     0.38013374    -0.16389860 &j3` )N  
    Change in Focus                :       0.667010 nlaG<L#  
    I=U+GY:  
    Number of traceable Monte Carlo files generated: 20 8B j4 _!g  
    kzMa+(fu  
    Nominal     0.54403234 4 ^4d9?c  
    Best        0.54384387    Trial     2 7LG+$LEz  
    Worst       0.18154684    Trial     4 b9`iZ  
    Mean        0.35770970 vuXS/ d  
    Std Dev     0.11156454 3u*82s\8T  
    aQga3;S!  
    4ffU;6~l'  
    Compensator Statistics:  -H`\? R  
    Change in back focus: `n6/ A)  
    Minimum            :        -1.354815 9WOu8Ia  
    Maximum            :         1.611296 Np$z%ewK.  
    Mean               :         0.161872 +yCTH  
    Standard Deviation :         0.869664 #$FY+`  
    AfN&n= d K  
    90% >       0.20977951               p+RAtRf  
    80% >       0.22748071               N ,+(>?yE  
    50% >       0.38667627               B "*`R!y  
    20% >       0.46553746               V>B'+b+<  
    10% >       0.50064115                TiQ^}5~M  
    7^Na9]PY  
    End of Run. WK*S4c  
    ]dq5hkjpU  
    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 ^xt9pa$f  
    aV<^IxE;  
    MA$Xv`6I\  
    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 Nl { 7  
    6%E~p0)i%  
    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                 ?Wa<AFXQ  
    80% >       0.22748071                 2d8=h6  
    50% >       0.38667627                 q$T8bh,2  
    20% >       0.46553746                 3$_*N(e  
    10% >       0.50064115 Xu6K%]i^  
    `|EH[W&y  
    最后这个数值是MTF值呢，还是MTF的公差？ s"coQ!e1.  
    3;l"=#5  
    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？？？   I+",b4  
    |1Hc&  
    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  : PJ q yvbD  
    90% >       0.20977951                 ^E,1V5  
    80% >       0.22748071                 wa:0X)KC?  
    50% >       0.38667627                 1*UN sEr  
    20% >       0.46553746                 4!%F\c46  
    10% >       0.50064115 op@i GC+  
    ....... 'jjb[{g^}}  
    +iA=y=;blH  
    z-,VnhLx  
    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   AK-}V4C/A  
    Mode                : Sensitivities 0X9Y~TM%  
    Sampling            : 2 F L=,YP  
    Nominal Criterion   : 0.54403234 ;>"nn VW  
    Test Wavelength     : 0.6328 W?XizTW  
    8;"*6vHZ  
    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？ )qU7`0'8  
    L%cVykWY"  
    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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