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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 3_ly"\I\  
    r3B}d*v  
    jF}-dfe  
    Y b=77(Q V  
    然后添加了默认公差分析,基本没变 iInWw"VbKe  
    `Gj(>z*  
    |M&4[ka}  
    ;1HzY\d%<  
    然后运行分析的结果如下: xg}Q~,:  
    oY4^CGk=  
    Analysis of Tolerances Fw S>V2R  
    3vs{*T"  
    File : E:\光学设计资料\zemax练习\f500.ZMX +Bf?35LP  
    Title: yQ)&u+r  
    Date : TUE JUN 21 2011 iF9d?9TWl  
    {h=gnR-9  
    Units are Millimeters. =EYWiK77a  
    All changes are computed using linear differences. L#",.x  
    q;}iW:r&Q  
    Paraxial Focus compensation only. ZTibF'\5N  
    .g3=L  
    WARNING: Solves should be removed prior to tolerancing. "[eH|z/  
    Sx[ eX,q  
    Mnemonics: 2Rt6)hgY  
    TFRN: Tolerance on curvature in fringes. P)kJ[Zv>f  
    TTHI: Tolerance on thickness. ^v `naA(  
    TSDX: Tolerance on surface decentering in x. CLTkyS)C  
    TSDY: Tolerance on surface decentering in y. hrm<!uKn  
    TSTX: Tolerance on surface tilt in x (degrees). /O5&)%N  
    TSTY: Tolerance on surface tilt in y (degrees). 9O -2  
    TIRR: Tolerance on irregularity (fringes). m):*>o55  
    TIND: Tolerance on Nd index of refraction. [~u&#!*W  
    TEDX: Tolerance on element decentering in x. L R\LC6kM  
    TEDY: Tolerance on element decentering in y. J#48c'  
    TETX: Tolerance on element tilt in x (degrees). `% QvCAR  
    TETY: Tolerance on element tilt in y (degrees). n1JtY75#,/  
    9b/Dswxjx  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. PcBD;[cn  
    fZezDm(Q  
    WARNING: Boundary constraints on compensators will be ignored. \ )=WA!  
    0$]iRE;O]  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm WR3,woo  
    Mode                : Sensitivities m`l9d4p w?  
    Sampling            : 2 *5 +GJWKN  
    Nominal Criterion   : 0.54403234 A#6zI NK#B  
    Test Wavelength     : 0.6328 {vGJ}q?Sd"  
    {9yf0n  
    ~_-]> SI  
    Fields: XY Symmetric Angle in degrees (c>g7d<>n  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY qa-FLUkIk!  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 NNF"si\FE  
    [lg!*  
    Sensitivity Analysis: *I)J%#  
    ~N/r;omVc  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| O5:bdt.  
    Type                      Value      Criterion        Change          Value      Criterion        Change kzjuW  
    Fringe tolerance on surface 1 0_eqO'"  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ICb!AsL  
    Change in Focus                :      -0.000000                            0.000000 odSPl{.>d  
    Fringe tolerance on surface 2  v&|65[<  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 QYMfxpiC  
    Change in Focus                :       0.000000                            0.000000 1vxRhS&FY  
    Fringe tolerance on surface 3 ~%8P0AP  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 >Jmla~A  
    Change in Focus                :      -0.000000                            0.000000 ly-(F2  
    Thickness tolerance on surface 1 N^dQX,j  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 !JDr58  
    Change in Focus                :       0.000000                            0.000000 iCPm7AU  
    Thickness tolerance on surface 2 pY`$k#5  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 CtXbAcN2B  
    Change in Focus                :       0.000000                           -0.000000 Td'Mc-/  
    Decenter X tolerance on surfaces 1 through 3 cv aG[NF  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Ln4]uqMG.  
    Change in Focus                :       0.000000                            0.000000 W!wof- 1  
    Decenter Y tolerance on surfaces 1 through 3 Xj 1Oxm 42  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 8i154#l+\  
    Change in Focus                :       0.000000                            0.000000 B S*79heY  
    Tilt X tolerance on surfaces 1 through 3 (degrees) UPI- j#yc  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 3)y1q>CQf  
    Change in Focus                :       0.000000                            0.000000 zak\%yY`  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 0+e=s0s.  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 s`jlE|jtN  
    Change in Focus                :       0.000000                            0.000000 o{G*7V@H  
    Decenter X tolerance on surface 1 .;]WcC<3  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ryVYY> *(K  
    Change in Focus                :       0.000000                            0.000000 (N}-]%#  
    Decenter Y tolerance on surface 1 J, -.5  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 [,;e ,ld  
    Change in Focus                :       0.000000                            0.000000 y#j7vO  
    Tilt X tolerance on surface (degrees) 1 #4JMb#q0E  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 . vb##D  
    Change in Focus                :       0.000000                            0.000000 5rows]EJJl  
    Tilt Y tolerance on surface (degrees) 1 )&@YRT\c?8  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Y"H`+UV  
    Change in Focus                :       0.000000                            0.000000 Q>,&@  
    Decenter X tolerance on surface 2 XM`GK>*aC(  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 hzsQK _;S  
    Change in Focus                :       0.000000                            0.000000 Byc;r-Q5V  
    Decenter Y tolerance on surface 2 8Yh'/,o=L#  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 bzFac5n)Q  
    Change in Focus                :       0.000000                            0.000000 L5bq\  
    Tilt X tolerance on surface (degrees) 2 lxyTh'  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 J8emz8J  
    Change in Focus                :       0.000000                            0.000000 8ttJ\m  
    Tilt Y tolerance on surface (degrees) 2 M-nRhso  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 EB}B75)x  
    Change in Focus                :       0.000000                            0.000000 Y~vk>ZC  
    Decenter X tolerance on surface 3 I=kqkuW  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ,)1C"'  
    Change in Focus                :       0.000000                            0.000000 Ddr.6`VJ  
    Decenter Y tolerance on surface 3 KnkmGy  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 .dU91> ~Ov  
    Change in Focus                :       0.000000                            0.000000 ~JT`q: l-q  
    Tilt X tolerance on surface (degrees) 3 gw)4P tb!  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Cw,a)XB  
    Change in Focus                :       0.000000                            0.000000 <D.E .^Y  
    Tilt Y tolerance on surface (degrees) 3 ^3dc#5]Xf  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 yMNJHiE/  
    Change in Focus                :       0.000000                            0.000000 8g0 #WV  
    Irregularity of surface 1 in fringes ] `$6=) _X  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 6\.g,>   
    Change in Focus                :       0.000000                            0.000000 ?{ )'O+s  
    Irregularity of surface 2 in fringes ';3>rv_  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 epsRv&LfC  
    Change in Focus                :       0.000000                            0.000000 @@D/&}#F  
    Irregularity of surface 3 in fringes |KhpF1/(  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 N/o?\q8  
    Change in Focus                :       0.000000                            0.000000 }ppApJT  
    Index tolerance on surface 1 \^(#b,k#  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 c,r6+oX  
    Change in Focus                :       0.000000                            0.000000 ~T@E")uR  
    Index tolerance on surface 2 0kUhz\"R:q  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 5S4Nx>  
    Change in Focus                :       0.000000                           -0.000000 +PYV-@q  
    %g7j7$c  
    Worst offenders: DNmC   
    Type                      Value      Criterion        Change ~aotV1"D  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 `lY-/Ty  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Ov(k:"N  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 \l=A2i7TQ  
    TSTX   2             0.20000000     0.35349910    -0.19053324 c^_+<C-F  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 D!* SA  
    TSTY   1             0.20000000     0.42678383    -0.11724851 mCnl@  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Oyb9 ql^  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Z84w9y7O<  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ):Fg {7b]n  
    TSTY   3             0.20000000     0.42861670    -0.11541563 w%wVB/(  
    CM~x1f*v  
    Estimated Performance Changes based upon Root-Sum-Square method: AIP0PJI3  
    Nominal MTF                 :     0.54403234 d1yLDj?  
    Estimated change            :    -0.36299231 E7$ aT^  
    Estimated MTF               :     0.18104003 GB+$ed5@<  
    =8vwaJ  
    Compensator Statistics: v#d3W| ~  
    Change in back focus: E.C=VfBW  
    Minimum            :        -0.000000 ke6,&s%{j  
    Maximum            :         0.000000 .D7Gog3^<  
    Mean               :        -0.000000 >uJu!+#  
    Standard Deviation :         0.000000 oVl:g:K40  
    ^!m%:r7Dr  
    Monte Carlo Analysis: 6ZjUC1  
    Number of trials: 20 J^WX^".E  
    VaonG]Ues  
    Initial Statistics: Normal Distribution ,jnaa(n  
    C\[:{d  
      Trial       Criterion        Change akj#.aYk  
          1     0.42804416    -0.11598818 /`qQWB5b  
    Change in Focus                :      -0.400171 s4Jy96<  
          2     0.54384387    -0.00018847 f4`Nws-dP  
    Change in Focus                :       1.018470 zl, Vj%d  
          3     0.44510003    -0.09893230 e[Z-&'  
    Change in Focus                :      -0.601922 *>GRU8_}  
          4     0.18154684    -0.36248550 )eX{a/Be  
    Change in Focus                :       0.920681 D7IhNWrgj  
          5     0.28665820    -0.25737414 Dl?:Mh  
    Change in Focus                :       1.253875 `OZiN;*|  
          6     0.21263372    -0.33139862 Lm^vS u  
    Change in Focus                :      -0.903878 yJw.z#bB#  
          7     0.40051424    -0.14351809 Cpn!}!Gnf  
    Change in Focus                :      -1.354815 H.Z<T{y;  
          8     0.48754161    -0.05649072 vgn,ZcX  
    Change in Focus                :       0.215922 9*s:Vff{  
          9     0.40357468    -0.14045766 {H=<5   
    Change in Focus                :       0.281783 H-% B<7  
         10     0.26315315    -0.28087919 n "I{aJ]K  
    Change in Focus                :      -1.048393 R<r,&X?m  
         11     0.26120585    -0.28282649 $}H,g}@0  
    Change in Focus                :       1.017611 FZ FPzH  
         12     0.24033815    -0.30369419 b. :2x4  
    Change in Focus                :      -0.109292 8y4t9V  
         13     0.37164046    -0.17239188 a3[,3  
    Change in Focus                :      -0.692430 F:Yp1Wrb<  
         14     0.48597489    -0.05805744 9 H>J S  
    Change in Focus                :      -0.662040 y+' ,jM  
         15     0.21462327    -0.32940907 @><8YN^)%  
    Change in Focus                :       1.611296 {P==6/<2o  
         16     0.43378226    -0.11025008 ] $F%  
    Change in Focus                :      -0.640081 `{ \)Wuw  
         17     0.39321881    -0.15081353 %y+v0.aWH+  
    Change in Focus                :       0.914906 #,SPV&  
         18     0.20692530    -0.33710703 \mFgjP z  
    Change in Focus                :       0.801607 Vzh\ 1cF  
         19     0.51374068    -0.03029165 /vLW{%  
    Change in Focus                :       0.947293 RV@mAw.T  
         20     0.38013374    -0.16389860 ^aqBL  
    Change in Focus                :       0.667010 o}L\b,])  
    2}9M7Z",2  
    Number of traceable Monte Carlo files generated: 20 1Uc/ r>u9  
    K*tomy  
    Nominal     0.54403234 PSU}fo  
    Best        0.54384387    Trial     2 ' $"RQ=  
    Worst       0.18154684    Trial     4 C!|Yz=e  
    Mean        0.35770970 S0lt _~  
    Std Dev     0.11156454 b%xG^jUXsX  
    q]Af I(  
    I(qFIV+H R  
    Compensator Statistics: CS;4ysNf  
    Change in back focus: 4 udW 6U  
    Minimum            :        -1.354815 eI/5foA  
    Maximum            :         1.611296 !{b4+!@p  
    Mean               :         0.161872 HDj260a  
    Standard Deviation :         0.869664 Am"&ApK  
     =tc!"{  
    90% >       0.20977951               C/q!!  
    80% >       0.22748071               D/Py?<n-B  
    50% >       0.38667627               /sdZf|Zl  
    20% >       0.46553746               9<5S!?JL  
    10% >       0.50064115                BR:Mcc  
    ^`bMFsP  
    End of Run. x !n8Wx  
    +.QJZo_  
    这就有了些疑问,为什么我选择的补偿器是近轴焦点,而分析结果近轴焦点都不变化??应该是变得。另外最后的蒙特卡洛分析,只有10%的大于0.5(我用的是MTF作为评价方式),可是我设计的MTF如图 %RzCJxT  
    ~re~Ys  
    r'MA$PiS'  
    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 TrBW0Bn>p  
    I5ZM U  
    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                 216$,4i  
    80% >       0.22748071                 YoBe!-E  
    50% >       0.38667627                 n2EPx(~  
    20% >       0.46553746                 ]qxl^Himq  
    10% >       0.50064115 5~j#Z (}u  
    ,~DV0#"  
    最后这个数值是MTF值呢,还是MTF的公差? |Wjpnz  
    ?)186dp  
    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???   c+ e~BN  
    imeE&  
    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  : id1cZig  
    90% >       0.20977951                 |NZi2Bu  
    80% >       0.22748071                 :@[\(:  
    50% >       0.38667627                 ~{/M_ =  
    20% >       0.46553746                 KUUA>'=  
    10% >       0.50064115 #y:D{%Wp  
    ....... I/Vw2  
    e.n(NW  
    2F:qaz  
    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   ~5N}P>4 *  
    Mode                : Sensitivities xqG<R5k>>  
    Sampling            : 2 ;o9h|LRs  
    Nominal Criterion   : 0.54403234 ,|]J aZq  
    Test Wavelength     : 0.6328 j7~FR{: j  
    cpQ5F;FI  
    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? Cr.YSW g)4  
    .xRdKt!p  
    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
    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