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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 or}[h09qA  
    =]0&i]z[.  
    m^;f(IK5  
    )bscBj@  
    然后添加了默认公差分析，基本没变 fVpMx4&F   
    4~Q/"hMSkO  
    L) T (<  
    {&1/V  
    然后运行分析的结果如下： ~oY^;/ j  
    "@2-Zdrr1<  
    Analysis of Tolerances *u;Iw{.{  
    .U]-j\  
    File : E:\光学设计资料\zemax练习\f500.ZMX ^s"R$?;h  
    Title: v mk2{f,g  
    Date : TUE JUN 21 2011 nZYBE030  
    TAW/zpps$  
    Units are Millimeters. F0@gSurg)  
    All changes are computed using linear differences. &gx%b*;`L0  
    { 9q4)R}G  
    Paraxial Focus compensation only. |aq"#Ml)  
    YT(AUS5n  
    WARNING: Solves should be removed prior to tolerancing. -6B4sZpzD  
    8FY?!C  
    Mnemonics: vUM4S26"NT  
    TFRN: Tolerance on curvature in fringes. Wvf ^N(  
    TTHI: Tolerance on thickness.  Mb~F%_  
    TSDX: Tolerance on surface decentering in x. cSV aI  
    TSDY: Tolerance on surface decentering in y. Lw>N rY(Y  
    TSTX: Tolerance on surface tilt in x (degrees). 7hPY_W y  
    TSTY: Tolerance on surface tilt in y (degrees). 3)ywX&4"L  
    TIRR: Tolerance on irregularity (fringes). $-sHWYZ  
    TIND: Tolerance on Nd index of refraction. +QJ#2~pE  
    TEDX: Tolerance on element decentering in x. =B@2#W#  
    TEDY: Tolerance on element decentering in y. )\$|X}uny&  
    TETX: Tolerance on element tilt in x (degrees). B tcy)LRk  
    TETY: Tolerance on element tilt in y (degrees). 8bld3p"^  
    U # qK.  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. * 0=j?~&  
    -(H0>Ap  
    WARNING: Boundary constraints on compensators will be ignored. 1iF1GkLEq  
    KPUV@eQ,  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 4'=y:v2  
    Mode                : Sensitivities <wD-qTW  
    Sampling            : 2 }0Ed ]  
    Nominal Criterion   : 0.54403234 >~0Z& d  
    Test Wavelength     : 0.6328 (n_/`dP  
    7-fb.V9  
    &{t,'[ u  
    Fields: XY Symmetric Angle in degrees 13x p_j  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ncT&Gr   
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 NK H@+,+V  
    #o#H?Vo9b  
    Sensitivity Analysis: "3Y0`&:D  
    5`p.#  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| GnJt0{  
    Type                      Value      Criterion        Change          Value      Criterion        Change o?Oc7 $+u  
    Fringe tolerance on surface 1 AFwdJte9e  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 + mT_QsLEv  
    Change in Focus                :      -0.000000                            0.000000 { 2f-8Z&>  
    Fringe tolerance on surface 2 O?#7N[7  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Wmv#:U  
    Change in Focus                :       0.000000                            0.000000 \ @2R9,9E  
    Fringe tolerance on surface 3 7s^'d,P  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 U|R_OLWAg  
    Change in Focus                :      -0.000000                            0.000000 KF:78C  
    Thickness tolerance on surface 1 ~*];pV]A[  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 =[7Av>  
    Change in Focus                :       0.000000                            0.000000 4;2uW#dG"  
    Thickness tolerance on surface 2 JNnDts*w  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 l9Q- iJ  
    Change in Focus                :       0.000000                           -0.000000 mj7#&r,1l  
    Decenter X tolerance on surfaces 1 through 3 19%i mf  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Y(Hs#Kn{  
    Change in Focus                :       0.000000                            0.000000 8P\Zo8}v  
    Decenter Y tolerance on surfaces 1 through 3 ysnx3(+|  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 !0<,@v"  
    Change in Focus                :       0.000000                            0.000000 kvu)y`  
    Tilt X tolerance on surfaces 1 through 3 (degrees) >Y@H4LF;1x  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 h^P#{W!e\  
    Change in Focus                :       0.000000                            0.000000 @gK?\URoT  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) W: z;|FF  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 aV0"~5  
    Change in Focus                :       0.000000                            0.000000 Xne1gms  
    Decenter X tolerance on surface 1 =~LJ3sIX  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671  6(R<{{  
    Change in Focus                :       0.000000                            0.000000 +D*Z_Yh6  
    Decenter Y tolerance on surface 1 4Ftu  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 <<O$ G7c  
    Change in Focus                :       0.000000                            0.000000 R`-S/C  
    Tilt X tolerance on surface (degrees) 1 <qt|d&  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 C\hM =%  
    Change in Focus                :       0.000000                            0.000000 B&"Q\'c  
    Tilt Y tolerance on surface (degrees) 1 <(#ej4ar,  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ]A_`0"m.U  
    Change in Focus                :       0.000000                            0.000000 9H1rO8k  
    Decenter X tolerance on surface 2 goWuw}?  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 -m#)B~)  
    Change in Focus                :       0.000000                            0.000000 DzRFMYBR  
    Decenter Y tolerance on surface 2 VuZr:-K/  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 E2+`4g@{8<  
    Change in Focus                :       0.000000                            0.000000 9%obq/Lb  
    Tilt X tolerance on surface (degrees) 2 \o3gKoL%  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 +&H4m=D-#a  
    Change in Focus                :       0.000000                            0.000000 '$+ogBS  
    Tilt Y tolerance on surface (degrees) 2 hOK8(U0  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 4s oJ.j8  
    Change in Focus                :       0.000000                            0.000000 G=bCNn<  
    Decenter X tolerance on surface 3 :.`2^  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 % A0/1{(  
    Change in Focus                :       0.000000                            0.000000 ;-Aa|aT!  
    Decenter Y tolerance on surface 3  e]$s t?  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 >=w)x,0yX  
    Change in Focus                :       0.000000                            0.000000 fI|$K )K  
    Tilt X tolerance on surface (degrees) 3 {id4:^u&;  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 K)iF>y|{*q  
    Change in Focus                :       0.000000                            0.000000 _,*r_D61S  
    Tilt Y tolerance on surface (degrees) 3 <%mRSv  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ;qV>L=a  
    Change in Focus                :       0.000000                            0.000000 G^@5H/)  
    Irregularity of surface 1 in fringes | 6y  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 h;'~,xA  
    Change in Focus                :       0.000000                            0.000000 + >!;i6|  
    Irregularity of surface 2 in fringes Vi|#@tC'  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 U #0Cx-E  
    Change in Focus                :       0.000000                            0.000000 (**oRwr%  
    Irregularity of surface 3 in fringes -$g#I  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 %@Jsal'  
    Change in Focus                :       0.000000                            0.000000 1{.9uw"2S  
    Index tolerance on surface 1 DVeE1Q  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 .fs3>@T"#  
    Change in Focus                :       0.000000                            0.000000 e+=K d+:k  
    Index tolerance on surface 2 !bP@n  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 8RHUeRX  
    Change in Focus                :       0.000000                           -0.000000 !H\F2Vxs  
    z0 Z%m@  
    Worst offenders: >@Kx>cg+  
    Type                      Value      Criterion        Change 4mbBmQV$#  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 tT._VK]o&R  
    TSTY   2             0.20000000     0.35349910    -0.19053324 /zox$p$?h  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 1AFA=t:]p  
    TSTX   2             0.20000000     0.35349910    -0.19053324 qcRs$-J  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 :~SyL!  
    TSTY   1             0.20000000     0.42678383    -0.11724851 uEx-]F  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 UGatWj  
    TSTX   1             0.20000000     0.42678383    -0.11724851 3iU=c&P  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 U%/+B]6jP  
    TSTY   3             0.20000000     0.42861670    -0.11541563  f)<6  
    0IWf!Sk ]  
    Estimated Performance Changes based upon Root-Sum-Square method: bN=P*hdf  
    Nominal MTF                 :     0.54403234 onV>.7sG  
    Estimated change            :    -0.36299231 (QiAisE  
    Estimated MTF               :     0.18104003 51.%;aY~z  
    6E}qL8'5x  
    Compensator Statistics: o,wUc"CE  
    Change in back focus: q0 \6F^;M  
    Minimum            :        -0.000000 ,iwp,=h=  
    Maximum            :         0.000000 /<BI46B\  
    Mean               :        -0.000000 OB}Ib]  
    Standard Deviation :         0.000000 EEL,^3KR  
    wS3'?PRX  
    Monte Carlo Analysis: D3K8F@d  
    Number of trials: 20 V^~:F  
    HLi%%"'  
    Initial Statistics: Normal Distribution i{qgn%#}Y  
    FE;x8(;W8  
      Trial       Criterion        Change h FBe,'3M  
          1     0.42804416    -0.11598818 e8 b:)"R  
    Change in Focus                :      -0.400171 YA5g';$H*  
          2     0.54384387    -0.00018847 Yz93'HDB  
    Change in Focus                :       1.018470 @|T'0_'  
          3     0.44510003    -0.09893230 ??/ 'kmd  
    Change in Focus                :      -0.601922 v(%*b,^  
          4     0.18154684    -0.36248550 Jfl!#UAD|n  
    Change in Focus                :       0.920681 (C)p9-,  
          5     0.28665820    -0.25737414 S0W||#Pr  
    Change in Focus                :       1.253875 3irl (;v  
          6     0.21263372    -0.33139862 ;xn0;V'=  
    Change in Focus                :      -0.903878 mXs; b 2r^  
          7     0.40051424    -0.14351809 Qe(:|q _  
    Change in Focus                :      -1.354815 mB)bcuPv  
          8     0.48754161    -0.05649072 1yY0dOoLG)  
    Change in Focus                :       0.215922 @9|hMo  
          9     0.40357468    -0.14045766 _PR4`C*  
    Change in Focus                :       0.281783 8Xs8A.  
         10     0.26315315    -0.28087919 | VDV<g5h  
    Change in Focus                :      -1.048393 oe~b}:  
         11     0.26120585    -0.28282649 B#1;r-^P<  
    Change in Focus                :       1.017611 %e} Saf  
         12     0.24033815    -0.30369419 sW8dPw O  
    Change in Focus                :      -0.109292 Yu2Bkq+  
         13     0.37164046    -0.17239188 P{^6v=8)  
    Change in Focus                :      -0.692430 Z;)%%V%o  
         14     0.48597489    -0.05805744 &PtJ$0%q  
    Change in Focus                :      -0.662040 ~4cC/"q$X  
         15     0.21462327    -0.32940907 R0-j5&^jju  
    Change in Focus                :       1.611296 y1L,0 ]  
         16     0.43378226    -0.11025008 ENY+^7  
    Change in Focus                :      -0.640081 |]*/R^1>2  
         17     0.39321881    -0.15081353 ,~W|]/b<q  
    Change in Focus                :       0.914906  %D "I  
         18     0.20692530    -0.33710703 o2\8OxcA  
    Change in Focus                :       0.801607 \xoP)Ub>  
         19     0.51374068    -0.03029165 &b& ,  
    Change in Focus                :       0.947293 hP&B t  
         20     0.38013374    -0.16389860 }*"p?L^p{  
    Change in Focus                :       0.667010 0_t!T'jr7  
    '1/i"yoW  
    Number of traceable Monte Carlo files generated: 20 7. ;3e@s  
    D. XvG_  
    Nominal     0.54403234 |LKXOU c  
    Best        0.54384387    Trial     2 R*r#E{!V;  
    Worst       0.18154684    Trial     4 P7/X|M z  
    Mean        0.35770970 _zMW=nypdx  
    Std Dev     0.11156454 .#pU=v#/[  
    k|d+#u[Mj@  
    hY8reQp1  
    Compensator Statistics: =odFmF  
    Change in back focus: }RqK84K  
    Minimum            :        -1.354815 .kfI i^z  
    Maximum            :         1.611296 _:27]K:  
    Mean               :         0.161872 h9W^[6  
    Standard Deviation :         0.869664 7D5]G-}x.  
    P7~>mm+  
    90% >       0.20977951               #>+HlT  
    80% >       0.22748071               cYt!n5w~W  
    50% >       0.38667627               `PH{syz  
    20% >       0.46553746               S{m% H{A!  
    10% >       0.50064115                h'F=YF$o  
    Tnm.A?  
    End of Run. 83q6Sv  
    ~qOa\#x_  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 [cp+i^f  
    u.Dz~$T  
    92KRb;c  
    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 G'A R`"F  
    M/gGoE{  
    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                 SKsKPqz  
    80% >       0.22748071                 Z}Ft:7   
    50% >       0.38667627                 iqQD{SRt{  
    20% >       0.46553746                 b}TS0+TF  
    10% >       0.50064115 ?2Py_gkf  
    2a Q[zK  
    最后这个数值是MTF值呢，还是MTF的公差？ P\rg" 3  
    UrEs4R1#  
    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？？？   ZX./P0  
    338k?nHxv  
    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  : o&)8o5  
    90% >       0.20977951                 <7Or{:Sc90  
    80% >       0.22748071                 `V)8 QRN(  
    50% >       0.38667627                 VSI9U3t3w  
    20% >       0.46553746                 Ma']?Rb`  
    10% >       0.50064115 g63(E,;;J  
    ....... a;qryUyG  
    +RMSA^  
    SaAFz&WRl  
    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    Rn(ec  
    Mode                : Sensitivities rv^@,8vq  
    Sampling            : 2 ,,&* :<Q  
    Nominal Criterion   : 0.54403234 =_ ./~  
    Test Wavelength     : 0.6328 2Aazy'/  
    v6M6>&RR|  
    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？ ?qLFaFt/  
    * 8yAG]z  
    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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