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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 d:=5y)  
    WRFzb0;01  
    iu&'v  
    <tgJ-rnL  
    然后添加了默认公差分析，基本没变 0xC{Lf&  
    U4O F{  
    A*~zdZ p  
    /_w oCLwQ#  
    然后运行分析的结果如下： |7UR_(}KC  
    ]X4A)%i  
    Analysis of Tolerances Scs \nF2  
    aeE9dV~  
    File : E:\光学设计资料\zemax练习\f500.ZMX 0rA&_K[#-<  
    Title: w]F(o  
    Date : TUE JUN 21 2011 g;eMsoJG  
    )MW.Y  
    Units are Millimeters. :)?w 2'O  
    All changes are computed using linear differences. 0j4bu}@  
    >,A:zbs&  
    Paraxial Focus compensation only. 3@s|tm1  
    Q6kkMLh  
    WARNING: Solves should be removed prior to tolerancing. +:wOzTUN  
    j$A~3O<e"  
    Mnemonics: AXz'=T}{  
    TFRN: Tolerance on curvature in fringes. t#}/VnSQ  
    TTHI: Tolerance on thickness. K )1K ]  
    TSDX: Tolerance on surface decentering in x. z)yxz:E  
    TSDY: Tolerance on surface decentering in y. ix$?/GlL  
    TSTX: Tolerance on surface tilt in x (degrees). "F}a nPY  
    TSTY: Tolerance on surface tilt in y (degrees). 0b~5i-zM/  
    TIRR: Tolerance on irregularity (fringes). 8GV$L~i  
    TIND: Tolerance on Nd index of refraction. 70a7}C\/o  
    TEDX: Tolerance on element decentering in x. ?7/n s>}  
    TEDY: Tolerance on element decentering in y. >Ex\j?  
    TETX: Tolerance on element tilt in x (degrees). 2\lUaC#E  
    TETY: Tolerance on element tilt in y (degrees). X]tjT   
    hf8 =r5j=  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. k P>G4$e_v  
    GmPNzHDb  
    WARNING: Boundary constraints on compensators will be ignored. 'X"@C;q  
    9]Uvy|  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm w,;CrW T2t  
    Mode                : Sensitivities *pyi;  
    Sampling            : 2 ) #9/vIQ  
    Nominal Criterion   : 0.54403234 mz3!HksZ "  
    Test Wavelength     : 0.6328 S3`zB?7,  
    <<@$0RW  
    5L"{J5R}  
    Fields: XY Symmetric Angle in degrees Bk?3lwCT  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY a(NN%'fDD  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 Pj8s;#~u  
    q[ ] "`?  
    Sensitivity Analysis: }rxFX  
    /4<eI 3Z  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| smF#'"{  
    Type                      Value      Criterion        Change          Value      Criterion        Change J}hi)k  
    Fringe tolerance on surface 1 mBhG"0:  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ABSA le  
    Change in Focus                :      -0.000000                            0.000000 2N9 BI-a  
    Fringe tolerance on surface 2 Gyw@+(l  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 H"tS33  
    Change in Focus                :       0.000000                            0.000000 ,[D,G  
    Fringe tolerance on surface 3 6K5KZZG  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 5Q^ L"&0  
    Change in Focus                :      -0.000000                            0.000000 c_)vWU  
    Thickness tolerance on surface 1 Y]0oF_ :7  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 S92'\2  
    Change in Focus                :       0.000000                            0.000000 Jb#*QJ=  
    Thickness tolerance on surface 2 MP-A^QT  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 M6jP>fbV*  
    Change in Focus                :       0.000000                           -0.000000 cH.T6u_%  
    Decenter X tolerance on surfaces 1 through 3 _~d C>`K  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 P)XkqOGpT9  
    Change in Focus                :       0.000000                            0.000000 G0^WQQ4  
    Decenter Y tolerance on surfaces 1 through 3 4~53%=+  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 VTa?y  
    Change in Focus                :       0.000000                            0.000000 xO`w| k  
    Tilt X tolerance on surfaces 1 through 3 (degrees) \( LKLlam  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 [9u/x%f(  
    Change in Focus                :       0.000000                            0.000000 d7g/s'ZHt6  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) xC9^x7%3O  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 8*;G\$+  
    Change in Focus                :       0.000000                            0.000000 aEW Z*y  
    Decenter X tolerance on surface 1 (9CB&LZ(+E  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 !:,d^L!bh  
    Change in Focus                :       0.000000                            0.000000 S)p{4`p%  
    Decenter Y tolerance on surface 1 hY7Q$B<  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Wct +T,8  
    Change in Focus                :       0.000000                            0.000000 Sd2R $r  
    Tilt X tolerance on surface (degrees) 1 a.v$+}+.[,  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 a\$PqOB!  
    Change in Focus                :       0.000000                            0.000000 JUok@6  
    Tilt Y tolerance on surface (degrees) 1 su<_?'uH  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 L[)+J2_<  
    Change in Focus                :       0.000000                            0.000000 6]Q ~c"+5  
    Decenter X tolerance on surface 2 )NGBA."t  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 :c"J$wT/  
    Change in Focus                :       0.000000                            0.000000 c=<d99Cu!  
    Decenter Y tolerance on surface 2 J*F-tRuEw  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 6A7UW7/  
    Change in Focus                :       0.000000                            0.000000 #IDDKUE  
    Tilt X tolerance on surface (degrees) 2 [Qa0uM#SU  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 KW+ps16~  
    Change in Focus                :       0.000000                            0.000000 MeW8aL r  
    Tilt Y tolerance on surface (degrees) 2 j wlmWO6  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 JAj<*TB.%  
    Change in Focus                :       0.000000                            0.000000 + V4BJ/H  
    Decenter X tolerance on surface 3 41>Bm*if  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 1!/cd;{B  
    Change in Focus                :       0.000000                            0.000000 (k"|k  
    Decenter Y tolerance on surface 3 ELeR5xT  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 pMM-LY7%{  
    Change in Focus                :       0.000000                            0.000000 WM}:%T-  
    Tilt X tolerance on surface (degrees) 3 $74ZC M  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 @Ytsb!!  
    Change in Focus                :       0.000000                            0.000000 j 9XY%4.  
    Tilt Y tolerance on surface (degrees) 3 g-U'{I5F  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 W%hdS<b  
    Change in Focus                :       0.000000                            0.000000 E,JDO d}  
    Irregularity of surface 1 in fringes a"&@G=M@d  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 zh2$U dZ|M  
    Change in Focus                :       0.000000                            0.000000 aD8cqVhM3&  
    Irregularity of surface 2 in fringes Z7"8dlb  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 2w)0>Y(_  
    Change in Focus                :       0.000000                            0.000000 "\Jq2vM  
    Irregularity of surface 3 in fringes .!RBh LH_g  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Wxkk^J9F3  
    Change in Focus                :       0.000000                            0.000000 s<5q%5ix3  
    Index tolerance on surface 1 ?/9]"HFHN  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 eft-]c+*0  
    Change in Focus                :       0.000000                            0.000000 38b%km#  
    Index tolerance on surface 2 D Km`  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 cveTrY}g  
    Change in Focus                :       0.000000                           -0.000000 [Tby+pC  
    `sQ\j Nu  
    Worst offenders: .%+'Ts#ie  
    Type                      Value      Criterion        Change [bUM x  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 "zc@(OA[z  
    TSTY   2             0.20000000     0.35349910    -0.19053324 >Bq;Z}EV  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 e]!Vxn3  
    TSTX   2             0.20000000     0.35349910    -0.19053324 L7_(KCh  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 q<o*rcwf ^  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Z^`&Z3s  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 H"WkZX  
    TSTX   1             0.20000000     0.42678383    -0.11724851 H[@uE*W  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 F8Z<JcOI  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ~mOGNf?f  
    6%H8Q v  
    Estimated Performance Changes based upon Root-Sum-Square method: 10_eUQN  
    Nominal MTF                 :     0.54403234 25BW/23}e  
    Estimated change            :    -0.36299231 TC?kuQI  
    Estimated MTF               :     0.18104003 h>sz@\{  
    I.r &;   
    Compensator Statistics: w(8q qU+\  
    Change in back focus: D QP#h5O  
    Minimum            :        -0.000000 vD D !.i  
    Maximum            :         0.000000 xr&wV0O '  
    Mean               :        -0.000000 L!V`Sb  
    Standard Deviation :         0.000000 $SSE\+|3  
    V.)y7B  
    Monte Carlo Analysis: *yKsgH  
    Number of trials: 20 ~"\sL;B  
    il<D e]G  
    Initial Statistics: Normal Distribution kFgN^v^t  
    [q cT?h  
      Trial       Criterion        Change Ev0GAc1  
          1     0.42804416    -0.11598818 $_k'!/5  
    Change in Focus                :      -0.400171 Wa #,>  
          2     0.54384387    -0.00018847 gGw6c" FRQ  
    Change in Focus                :       1.018470 Re5m  
          3     0.44510003    -0.09893230 R"6Gm67t  
    Change in Focus                :      -0.601922 ih.UzPg  
          4     0.18154684    -0.36248550 Q\z3YUk  
    Change in Focus                :       0.920681 bv;&oc:r  
          5     0.28665820    -0.25737414 N?Mmv|  
    Change in Focus                :       1.253875 <89@k(\ /  
          6     0.21263372    -0.33139862 1)/B V{n  
    Change in Focus                :      -0.903878 F+*>q  
          7     0.40051424    -0.14351809 %56pP"w  
    Change in Focus                :      -1.354815 ^%~ztn 51  
          8     0.48754161    -0.05649072 H1| -f]!  
    Change in Focus                :       0.215922 ->n<9  
          9     0.40357468    -0.14045766  twz  
    Change in Focus                :       0.281783 cCFSPT2fq[  
         10     0.26315315    -0.28087919 r=n|MT^O  
    Change in Focus                :      -1.048393 %2^C  
         11     0.26120585    -0.28282649 K_{x y#H  
    Change in Focus                :       1.017611 6R%c+ok8i  
         12     0.24033815    -0.30369419 &YO5N4X~o  
    Change in Focus                :      -0.109292 HQ7-,!XO  
         13     0.37164046    -0.17239188 j$T2ff6  
    Change in Focus                :      -0.692430 MVjc.^  
         14     0.48597489    -0.05805744 LnZ*,>1 Z  
    Change in Focus                :      -0.662040 -Hh$3U v  
         15     0.21462327    -0.32940907 }1TfKS]m>  
    Change in Focus                :       1.611296 D4s*J21)D  
         16     0.43378226    -0.11025008 (sS[F-2R7  
    Change in Focus                :      -0.640081 [A|W0  
         17     0.39321881    -0.15081353 -kES]P?2  
    Change in Focus                :       0.914906 |4-c/@D.~  
         18     0.20692530    -0.33710703 eG|e1tK+  
    Change in Focus                :       0.801607 LoOyqJ,  
         19     0.51374068    -0.03029165 6Kh: m-E9  
    Change in Focus                :       0.947293 K).X=2gjY  
         20     0.38013374    -0.16389860 R" 5/  
    Change in Focus                :       0.667010 si=/=h  
    :|<D(YA  
    Number of traceable Monte Carlo files generated: 20 wC!(STu  
    ]SBv3Q0D7  
    Nominal     0.54403234 sa#=#0yg  
    Best        0.54384387    Trial     2 9Vzk:zOT  
    Worst       0.18154684    Trial     4 :KgLjhj|)  
    Mean        0.35770970 q]<Xx{_  
    Std Dev     0.11156454 XT{1!I(  
    9Lk.\.  
    eQcy'GA06  
    Compensator Statistics: >G' NI?$  
    Change in back focus: k :7UU4M 5  
    Minimum            :        -1.354815 3, ,Z  
    Maximum            :         1.611296 IL3,dad'^  
    Mean               :         0.161872 .{7?Y;_(  
    Standard Deviation :         0.869664 }w8h^(+B  
    j0 =`Jf  
    90% >       0.20977951               +SPC@E_v  
    80% >       0.22748071               %!(6vm>8  
    50% >       0.38667627               #$jAGt3^BT  
    20% >       0.46553746               gD=s~DgN)  
    10% >       0.50064115                "uGJ\  
    /,Ln)?eD  
    End of Run. Zdh4CNEeFP  
    wIx Lr{  
    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 x9Gm)~  
    .Yha(5(  
    |YZ`CN<  
    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 x18ei@c  
    T]Tz<w 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                 wfo}TGhC  
    80% >       0.22748071                 DKK200j  
    50% >       0.38667627                 ANT^&NjJ7  
    20% >       0.46553746                 NNe'5q9  
    10% >       0.50064115 Ij=hmTl{P  
    z w5EaY  
    最后这个数值是MTF值呢，还是MTF的公差？ ).v;~yE   
    4`Fbl]Q   
    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？？？   9oc[}k-M  
    Bct>EWQ  
    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  : oq0G@  
    90% >       0.20977951                 \ u5%+GA-:  
    80% >       0.22748071                 -ud!j  
    50% >       0.38667627                 Dk[[f<H_{  
    20% >       0.46553746                 OF DPtJwV  
    10% >       0.50064115 Y|1kE;  
    ....... ZEApE+m  
    s6KZV@1  
    \idg[&}l}  
    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   !xa,[$w(^  
    Mode                : Sensitivities h^[K= J  
    Sampling            : 2 Vl'|l)b4W  
    Nominal Criterion   : 0.54403234 n]_8!NU  
    Test Wavelength     : 0.6328 lf Wxdi  
    #x "pG  
    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？ w9z((\5  
    V&NOp  
    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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