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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 N"zl7.E  
    ?8q4texf[  
    va!fJ  
    v3cLU7bi?2  
    然后添加了默认公差分析，基本没变 +; =XiB5R  
    fBKN?]BdN  
    yjM!M|  
    f 2k~(@!h  
    然后运行分析的结果如下： ,t39~w  
    ONLhQJCb  
    Analysis of Tolerances >P-'C^:V=  
    0<nW nD,z  
    File : E:\光学设计资料\zemax练习\f500.ZMX c&"1Z/tR  
    Title: g ~%IA.$c  
    Date : TUE JUN 21 2011 WmE4TL^8?  
    \ (U|&  
    Units are Millimeters. <@;bxSUx  
    All changes are computed using linear differences. Bd[H@oKru  
    X @X`,/{X  
    Paraxial Focus compensation only. \<\147&)r  
    '<AE%i,  
    WARNING: Solves should be removed prior to tolerancing. 5?TX.h9B4  
    fF. +{-.  
    Mnemonics: Xet} J@C  
    TFRN: Tolerance on curvature in fringes. VgMuX3=  
    TTHI: Tolerance on thickness. Cf@N>N#t)  
    TSDX: Tolerance on surface decentering in x. 6. vwK3\>~  
    TSDY: Tolerance on surface decentering in y. 1:4u]$@E  
    TSTX: Tolerance on surface tilt in x (degrees). L tK,_j  
    TSTY: Tolerance on surface tilt in y (degrees). Hh%|}*f_,  
    TIRR: Tolerance on irregularity (fringes). MF +F8h>/  
    TIND: Tolerance on Nd index of refraction. @ZtvpL}e  
    TEDX: Tolerance on element decentering in x. |j4;XaG)  
    TEDY: Tolerance on element decentering in y. 0I*{CVTQj  
    TETX: Tolerance on element tilt in x (degrees). 'N/u< `)  
    TETY: Tolerance on element tilt in y (degrees). ;p:CrFv  
    th+LScOX  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. c\rP"y|S};  
    EH]qYF.  
    WARNING: Boundary constraints on compensators will be ignored. && WEBQ  
    b>nwX9Y/U  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm {-yw@Kq  
    Mode                : Sensitivities P} Y .  
    Sampling            : 2 ZJHaY09N  
    Nominal Criterion   : 0.54403234 K%;=i2:  
    Test Wavelength     : 0.6328 LKst QP!I  
    [\=1|t5n~  
    \Lm`jU(:l  
    Fields: XY Symmetric Angle in degrees 8/-hODoT_  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY YH&0Vy#c$  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 H2CpZK'  
    (_fovV=  
    Sensitivity Analysis: P@U2Q%\  
    l^rQo_alk  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| Y5<W"[B!  
    Type                      Value      Criterion        Change          Value      Criterion        Change ]x6r P  
    Fringe tolerance on surface 1 ] m #*4  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 `|4k>5k  
    Change in Focus                :      -0.000000                            0.000000 6e"Lod_ L  
    Fringe tolerance on surface 2 (ZQ?1Qxo  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 iO}KERfU  
    Change in Focus                :       0.000000                            0.000000 (.kzJ\x  
    Fringe tolerance on surface 3 ccy q~  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 )&ucX  
    Change in Focus                :      -0.000000                            0.000000 L!~ap  
    Thickness tolerance on surface 1 iXqRX';F'}  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 S4 s#EDs  
    Change in Focus                :       0.000000                            0.000000 ~g*5."-i  
    Thickness tolerance on surface 2 Nu+DVIM  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 eCG{KCM~_Z  
    Change in Focus                :       0.000000                           -0.000000 igF<].'V  
    Decenter X tolerance on surfaces 1 through 3 |]b,% ?,U  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 5`q#~fJ2  
    Change in Focus                :       0.000000                            0.000000  Rp6q)  
    Decenter Y tolerance on surfaces 1 through 3 '-P+|bZW4  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 MaZS|Zei[  
    Change in Focus                :       0.000000                            0.000000 [x -<O:r=P  
    Tilt X tolerance on surfaces 1 through 3 (degrees) W4)bEWO+q  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 5JS*6|IbD{  
    Change in Focus                :       0.000000                            0.000000 ."ytBF  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) l6.&<0pLT  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 l$m}aQ%h  
    Change in Focus                :       0.000000                            0.000000 S]Aaf-X_  
    Decenter X tolerance on surface 1 }|l7SFst  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 AL|3_+G  
    Change in Focus                :       0.000000                            0.000000 ]2MX7  
    Decenter Y tolerance on surface 1 n'!x"O7  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 =:\5*  
    Change in Focus                :       0.000000                            0.000000 I 1Yr{(ho  
    Tilt X tolerance on surface (degrees) 1 ,Uy;jk  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 N\Ab0mDOV.  
    Change in Focus                :       0.000000                            0.000000 Y /l~R7  
    Tilt Y tolerance on surface (degrees) 1 C{,Vk/D-0  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Nop61zj  
    Change in Focus                :       0.000000                            0.000000 DkW^gt  
    Decenter X tolerance on surface 2 C2 yJ Xi`$  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 T NF  
    Change in Focus                :       0.000000                            0.000000 `tl-] ^Y2  
    Decenter Y tolerance on surface 2 6Ia[`x uL  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 {8,_[?H  
    Change in Focus                :       0.000000                            0.000000 zO0K*s.yK  
    Tilt X tolerance on surface (degrees) 2 #p-\Y7f  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ){KrBaGa4  
    Change in Focus                :       0.000000                            0.000000 @?& i   
    Tilt Y tolerance on surface (degrees) 2 BJ{?S{"6%G  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 l)V646-O,~  
    Change in Focus                :       0.000000                            0.000000 *E-MJCv  
    Decenter X tolerance on surface 3 u/FC\xJc  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 w{GEWD{&  
    Change in Focus                :       0.000000                            0.000000 V OT9cP^6  
    Decenter Y tolerance on surface 3 l`a_0  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 8#HQ05q>  
    Change in Focus                :       0.000000                            0.000000 M%s!qC+  
    Tilt X tolerance on surface (degrees) 3 ovaX_d)cU  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ,Bj]j -\Y  
    Change in Focus                :       0.000000                            0.000000 =nlj|S ~3  
    Tilt Y tolerance on surface (degrees) 3 $paE6X^  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 qos/pm$&i  
    Change in Focus                :       0.000000                            0.000000 Fzz9BEw(i  
    Irregularity of surface 1 in fringes V(Oi!(H;v  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 O mph(  
    Change in Focus                :       0.000000                            0.000000 #z}0]GJKj  
    Irregularity of surface 2 in fringes ScRK1  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 !04 ^E  
    Change in Focus                :       0.000000                            0.000000 S(lqj6aa}  
    Irregularity of surface 3 in fringes -?Cu-'  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 R S] N%`]  
    Change in Focus                :       0.000000                            0.000000 kRH D{6mol  
    Index tolerance on surface 1 U\>k>|Jr{  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ]-l4  
    Change in Focus                :       0.000000                            0.000000 C}\kp0mz  
    Index tolerance on surface 2 JC}T*h>Ee  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 eQIS`T  
    Change in Focus                :       0.000000                           -0.000000 [5Zi\'~UH)  
    kqGydGh*"  
    Worst offenders: |RDE/  
    Type                      Value      Criterion        Change A@reIt  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 _,w*Rv5=  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ozA%u,\7k  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 !k#N] 9D3  
    TSTX   2             0.20000000     0.35349910    -0.19053324 5xa!L@)`wF  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 x[$ :^5V  
    TSTY   1             0.20000000     0.42678383    -0.11724851 @9\E  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 B0^:nYko  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ~O 4@b/!4  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 TBgiA}|\D  
    TSTY   3             0.20000000     0.42861670    -0.11541563 S}K-\[i?  
    2t7=GA+j  
    Estimated Performance Changes based upon Root-Sum-Square method: T%**:@}+  
    Nominal MTF                 :     0.54403234 $BOpjDV8  
    Estimated change            :    -0.36299231 NC|VZwQtm  
    Estimated MTF               :     0.18104003 w7~&Xxa/  
    A64c,Uv  
    Compensator Statistics: EpENhC0  
    Change in back focus: z0T6a15f!P  
    Minimum            :        -0.000000 +\J+?jOC4S  
    Maximum            :         0.000000 ryTtGx%a  
    Mean               :        -0.000000 {3 >`k.w  
    Standard Deviation :         0.000000 ~)5k%?.  
    %@%~<U)W  
    Monte Carlo Analysis: 0p'g+ 2  
    Number of trials: 20 |2I p*  
    !ce,^z&5  
    Initial Statistics: Normal Distribution 4n%|h-!8  
    )7WLbj!M  
      Trial       Criterion        Change SnoEi~Da  
          1     0.42804416    -0.11598818 UO-,A j*wW  
    Change in Focus                :      -0.400171 iF1zLI<A  
          2     0.54384387    -0.00018847 ##U/Wa3  
    Change in Focus                :       1.018470 pH0MVu(W  
          3     0.44510003    -0.09893230 :{?Pq8jP  
    Change in Focus                :      -0.601922 a(x#6  
          4     0.18154684    -0.36248550 TH+TcYqO  
    Change in Focus                :       0.920681 ~Yg+bwh  
          5     0.28665820    -0.25737414 _F jax  
    Change in Focus                :       1.253875 GGFrV8  
          6     0.21263372    -0.33139862 kb'l@d#E  
    Change in Focus                :      -0.903878 = Ru q  
          7     0.40051424    -0.14351809 lsVg'k/Z!  
    Change in Focus                :      -1.354815 PH!rWR  
          8     0.48754161    -0.05649072 x8&~  
    Change in Focus                :       0.215922 W}k)5<C4v  
          9     0.40357468    -0.14045766 [8[`V)b  
    Change in Focus                :       0.281783 &y~GTEP  
         10     0.26315315    -0.28087919 'WwD$e0=  
    Change in Focus                :      -1.048393 [V;Q#r&+  
         11     0.26120585    -0.28282649 7gt%[r M  
    Change in Focus                :       1.017611 &I/C^/F&  
         12     0.24033815    -0.30369419 N ^H H&~V  
    Change in Focus                :      -0.109292 YTfMYH=}  
         13     0.37164046    -0.17239188 {!"lHM%  
    Change in Focus                :      -0.692430 Na`vw  
         14     0.48597489    -0.05805744 q_:B=w+bC  
    Change in Focus                :      -0.662040 wr2F]1bh@  
         15     0.21462327    -0.32940907 kk aS&r>  
    Change in Focus                :       1.611296 u~27\oj,  
         16     0.43378226    -0.11025008 QC+BEN$  
    Change in Focus                :      -0.640081 5R O_)G<  
         17     0.39321881    -0.15081353 6Ou[t6  
    Change in Focus                :       0.914906 G3t\2E9S  
         18     0.20692530    -0.33710703 J8h H#7WMS  
    Change in Focus                :       0.801607 #:nds,   
         19     0.51374068    -0.03029165 Q_A?p$%;L  
    Change in Focus                :       0.947293 >8DZj&j  
         20     0.38013374    -0.16389860 M\=/i\-  
    Change in Focus                :       0.667010 xx,|n  
    1$uO%  
    Number of traceable Monte Carlo files generated: 20 7XiR)jYo*  
    wU5= '  
    Nominal     0.54403234 u]t#Vf-$u  
    Best        0.54384387    Trial     2 g=kuM  
    Worst       0.18154684    Trial     4 tR-rW)0K3Q  
    Mean        0.35770970 efm#:>H  
    Std Dev     0.11156454 +p &$`(  
    t%30B^Ii%K  
    Vxim$'x!  
    Compensator Statistics: *iujJ i  
    Change in back focus: fngk<$lvg  
    Minimum            :        -1.354815 U9yR~pw  
    Maximum            :         1.611296 (k>I!Z/&2  
    Mean               :         0.161872 fvw&y+|y!  
    Standard Deviation :         0.869664 |FZIUS{]  
    !T26#>mV  
    90% >       0.20977951               SWMi+)  
    80% >       0.22748071               sTF Ru  
    50% >       0.38667627               \oAxmvt  
    20% >       0.46553746               RQd5Q.  
    10% >       0.50064115                <@H=XEn  
    ?L6ACi`9  
    End of Run. #Pq.^ ^  
    c"CF&vTp  
    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 7a'@NgiGg  
    x '`L( C  
    HiDL:14  
    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 iCZ1ARi  
    1$rrfg  
    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                 &nEQ `3~F  
    80% >       0.22748071                 \Z%V)ZRi=  
    50% >       0.38667627                 ImVHX~ qHJ  
    20% >       0.46553746                 ^N_?&pgy  
    10% >       0.50064115 !]z6?kUK  
    EkEU}2  
    最后这个数值是MTF值呢，还是MTF的公差？ - Ado-'aaS  
    -R-|[xN  
    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？？？   u4p){|x7s  
    U:o(%dk  
    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  : 17nONhh  
    90% >       0.20977951                 ,ruL7|T&  
    80% >       0.22748071                 Jm l4EW7  
    50% >       0.38667627                 tL!R^Tf  
    20% >       0.46553746                 gADEjr*H  
    10% >       0.50064115 2 Xt$KF,?  
    ....... '[nH] N  
    `zJTVi4  
    [N-t6Z*  
    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   ?1z." &  
    Mode                : Sensitivities <opBOZ d  
    Sampling            : 2 W\tSXM-Hg  
    Nominal Criterion   : 0.54403234 5+gSpg]i  
    Test Wavelength     : 0.6328 JY|f zL  
    _Co*"hl>2  
    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？ se)vi;J7K  
    )PRyDC-  
    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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