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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 nv(6NV  
    @$CPTv3e  
    [w-# !X2y  
    r[^O 7  
    然后添加了默认公差分析，基本没变 D><^7nr%  
    82V;J 8T?  
    E(z|LS*3  
    "HwlN_PA  
    然后运行分析的结果如下： KU Mk:5 c  
    i5_l//]  
    Analysis of Tolerances n<@C'\j@  
    f+.sm  
    File : E:\光学设计资料\zemax练习\f500.ZMX c/=\YeR  
    Title: sk_xQo#Y 3  
    Date : TUE JUN 21 2011 ,1.Td=lY$  
    IFZw54  
    Units are Millimeters. ~ 588md :  
    All changes are computed using linear differences. mVN\  
    (]VY==t~  
    Paraxial Focus compensation only. G)f!AuN=  
    5/T#>l<  
    WARNING: Solves should be removed prior to tolerancing. uJ fXe  
    \IEuu^  
    Mnemonics: C[l5[DpH  
    TFRN: Tolerance on curvature in fringes. |N3#of(  
    TTHI: Tolerance on thickness. )cL`$h4DD  
    TSDX: Tolerance on surface decentering in x. ><. *5q  
    TSDY: Tolerance on surface decentering in y. KdzV^6K<c  
    TSTX: Tolerance on surface tilt in x (degrees). H(O|y2   
    TSTY: Tolerance on surface tilt in y (degrees). 'Q=(1a11  
    TIRR: Tolerance on irregularity (fringes). L s3r( Tf  
    TIND: Tolerance on Nd index of refraction. yMmUOIxk\  
    TEDX: Tolerance on element decentering in x. q0['!G%["  
    TEDY: Tolerance on element decentering in y. >z% WW&Z'  
    TETX: Tolerance on element tilt in x (degrees). 0zsmZ]b5E  
    TETY: Tolerance on element tilt in y (degrees). [r9HYju =  
    5{IbKj|  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ]US!3R^  
    -6X+:r`>u  
    WARNING: Boundary constraints on compensators will be ignored. M"msLz  
    SL\15`[{  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm r^ '  
    Mode                : Sensitivities w4&\-S#  
    Sampling            : 2 SLH;iqPT  
    Nominal Criterion   : 0.54403234 1zCgPiAem  
    Test Wavelength     : 0.6328 ~zvZK]JoX  
    {Q`Q2'@  
    )jjaY1E  
    Fields: XY Symmetric Angle in degrees o{l]n*  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Df]*S  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 cFq2 6(e  
    Qw"%Xk  
    Sensitivity Analysis: _fHj8- s/  
    & IsPqO  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| gO@LJ  
    Type                      Value      Criterion        Change          Value      Criterion        Change Id>I.e4  
    Fringe tolerance on surface 1 *D`$oK,U  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ; 3sjTqD  
    Change in Focus                :      -0.000000                            0.000000 C}pQFL{B5  
    Fringe tolerance on surface 2 a1QW0d  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 [9F  
    Change in Focus                :       0.000000                            0.000000 T&:~=  
    Fringe tolerance on surface 3 rd=+[:7L  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 0xaK"\Q   
    Change in Focus                :      -0.000000                            0.000000 PIoBKCJ  
    Thickness tolerance on surface 1 |eJR3o  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 vfc,{F=Q  
    Change in Focus                :       0.000000                            0.000000 TZ}y%iU:mB  
    Thickness tolerance on surface 2 EN8xn9M?  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 41Ab,  
    Change in Focus                :       0.000000                           -0.000000 6!;D],,"#.  
    Decenter X tolerance on surfaces 1 through 3 k 6i&NG6  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 >LPIvmT4D?  
    Change in Focus                :       0.000000                            0.000000 `}FZ;q3DP  
    Decenter Y tolerance on surfaces 1 through 3 [81q 0@  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 J: I@kM  
    Change in Focus                :       0.000000                            0.000000 dVn_+1\L  
    Tilt X tolerance on surfaces 1 through 3 (degrees) UA*Kuad  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 SDk^fTV8x  
    Change in Focus                :       0.000000                            0.000000 "{2niBx  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) Blj<|\ igc  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 %J9+`uSl  
    Change in Focus                :       0.000000                            0.000000 9;L8%T (  
    Decenter X tolerance on surface 1  7mtg  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ][YC.J  
    Change in Focus                :       0.000000                            0.000000 k[@/N+;")`  
    Decenter Y tolerance on surface 1 eF' l_*  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 JBLh4c3  
    Change in Focus                :       0.000000                            0.000000 1 (e64w@  
    Tilt X tolerance on surface (degrees) 1 (CJx Y(1K  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 C\^,+)Y\~  
    Change in Focus                :       0.000000                            0.000000 IlB*JJnl  
    Tilt Y tolerance on surface (degrees) 1 X!@ Y ,  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 7" )~JBH  
    Change in Focus                :       0.000000                            0.000000 \: B))y?}d  
    Decenter X tolerance on surface 2 |=V~CQ]  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ToD_9i }6  
    Change in Focus                :       0.000000                            0.000000 %'S[f  
    Decenter Y tolerance on surface 2 upZf&4 I8  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ,/!^ZS*  
    Change in Focus                :       0.000000                            0.000000 p\.IP2+c  
    Tilt X tolerance on surface (degrees) 2 *9EW &Ek  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 \m:('^\6o  
    Change in Focus                :       0.000000                            0.000000 "^Y zHq6  
    Tilt Y tolerance on surface (degrees) 2 k~fH:X~x  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 0]^gT'  
    Change in Focus                :       0.000000                            0.000000 J@#rOOu  
    Decenter X tolerance on surface 3 gP |>gy#e  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 i)$<j!L  
    Change in Focus                :       0.000000                            0.000000 ?I\,RiZkz^  
    Decenter Y tolerance on surface 3 n9R0f9:*  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ,ne3uPRu7~  
    Change in Focus                :       0.000000                            0.000000 9n"MNedqH  
    Tilt X tolerance on surface (degrees) 3 QbY@{"" `  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ;82?ACCP  
    Change in Focus                :       0.000000                            0.000000 yM,Y8^  
    Tilt Y tolerance on surface (degrees) 3 jdx T662q  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 62K#rR S  
    Change in Focus                :       0.000000                            0.000000 oArJ%Y>  
    Irregularity of surface 1 in fringes x0)WrDb  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 >2X-98,  
    Change in Focus                :       0.000000                            0.000000 : LT'#Q8  
    Irregularity of surface 2 in fringes 9}H]4"f7  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 cH+ ~|3  
    Change in Focus                :       0.000000                            0.000000 *d PbV.HCl  
    Irregularity of surface 3 in fringes {faIyKtW  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Fh|{ib  
    Change in Focus                :       0.000000                            0.000000 usC$NVdm  
    Index tolerance on surface 1 z%\&n0  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 $dA]GWW5A  
    Change in Focus                :       0.000000                            0.000000 *kEzGgTzoS  
    Index tolerance on surface 2 *%E\mu,,c  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 \NKQ:F1  
    Change in Focus                :       0.000000                           -0.000000 )V&hS5P=S  
    (L(n%  
    Worst offenders: ''3I0X*!  
    Type                      Value      Criterion        Change `3@?)xa  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 %Y>E  
    TSTY   2             0.20000000     0.35349910    -0.19053324 8)ng> l  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 NB+/S;`  
    TSTX   2             0.20000000     0.35349910    -0.19053324 5G$5d:[(  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 6Rmdf>a  
    TSTY   1             0.20000000     0.42678383    -0.11724851 G\B+bBz  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 5}c8v2R:B  
    TSTX   1             0.20000000     0.42678383    -0.11724851 0N$FIw2  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 Lj3Pp$h  
    TSTY   3             0.20000000     0.42861670    -0.11541563 II!~"-WH  
    l@ (:Q!Sk  
    Estimated Performance Changes based upon Root-Sum-Square method: Y*S:/b~y  
    Nominal MTF                 :     0.54403234 1Kd6tnX  
    Estimated change            :    -0.36299231 =itQ@ ``r  
    Estimated MTF               :     0.18104003 P+wpX  
    0m"Ni:KEf  
    Compensator Statistics: `csZ*$7  
    Change in back focus: gga}mqMv=  
    Minimum            :        -0.000000 AWKJ@&pA9m  
    Maximum            :         0.000000 q6<P\CSHy<  
    Mean               :        -0.000000 SvrUXf  
    Standard Deviation :         0.000000 O;|Cu7WU  
    KHgn  
    Monte Carlo Analysis: F\|4zM  
    Number of trials: 20 9%1J..c  
    k%Vprc  
    Initial Statistics: Normal Distribution lW|v_oP9  
    T[#q0bv  
      Trial       Criterion        Change -4zV yW S<  
          1     0.42804416    -0.11598818 e<[ ] W4"A  
    Change in Focus                :      -0.400171 1<5Ug8q  
          2     0.54384387    -0.00018847 K1Uq` TJ  
    Change in Focus                :       1.018470 VCJOWU EO1  
          3     0.44510003    -0.09893230 $mh\`  
    Change in Focus                :      -0.601922 ~QDM .5  
          4     0.18154684    -0.36248550 P;mp)1C  
    Change in Focus                :       0.920681 i^V(LGQF  
          5     0.28665820    -0.25737414 #sDb611}#  
    Change in Focus                :       1.253875 py+\e" s  
          6     0.21263372    -0.33139862 x~wS/y  
    Change in Focus                :      -0.903878 B?- poB&  
          7     0.40051424    -0.14351809 9 <{C9  
    Change in Focus                :      -1.354815 C4P<GtR9  
          8     0.48754161    -0.05649072 mt`CQz"_  
    Change in Focus                :       0.215922 >#k- ~|w  
          9     0.40357468    -0.14045766 [uLs M<C  
    Change in Focus                :       0.281783 q=V'pML  
         10     0.26315315    -0.28087919 [.1ME lM  
    Change in Focus                :      -1.048393 l`i97P?/W  
         11     0.26120585    -0.28282649 e}S+1G6r)  
    Change in Focus                :       1.017611 LO>42o?/i  
         12     0.24033815    -0.30369419 /of K7/  
    Change in Focus                :      -0.109292 /XEW]/4  
         13     0.37164046    -0.17239188 }v4dOGc?  
    Change in Focus                :      -0.692430 q!?*M?Oz  
         14     0.48597489    -0.05805744 b*M?\ aA  
    Change in Focus                :      -0.662040 O#^H.B  
         15     0.21462327    -0.32940907 \7"|'fz  
    Change in Focus                :       1.611296 I "~.p='  
         16     0.43378226    -0.11025008  J}:.I>  
    Change in Focus                :      -0.640081 ^B% =P  
         17     0.39321881    -0.15081353 +a 1iZ bh  
    Change in Focus                :       0.914906 ~rJG4U  
         18     0.20692530    -0.33710703 #mA(x@:*  
    Change in Focus                :       0.801607 =R|XFZ,  
         19     0.51374068    -0.03029165 [!-gb+L  
    Change in Focus                :       0.947293 y,3ZdY"  
         20     0.38013374    -0.16389860 -p.\fvip  
    Change in Focus                :       0.667010 cgSN:$p(R  
    kMMgY?  
    Number of traceable Monte Carlo files generated: 20 n=vDEX:'  
    T?t/[iuHrj  
    Nominal     0.54403234 (r kg0  
    Best        0.54384387    Trial     2 ]MosiMJF  
    Worst       0.18154684    Trial     4 Jt@lH  
    Mean        0.35770970 eY5mwJ0K  
    Std Dev     0.11156454 2_+>a"8Y  
    PD-&(ka.  
    }|Mwv $`  
    Compensator Statistics: -` U |5  
    Change in back focus: '=n?^EPE3  
    Minimum            :        -1.354815 v#d\YV{I  
    Maximum            :         1.611296  pUb1#=  
    Mean               :         0.161872 Y}N\|*ye-  
    Standard Deviation :         0.869664 ~<m^  
    0f.j W O  
    90% >       0.20977951               0)332}Oh  
    80% >       0.22748071               YAOfuas]j  
    50% >       0.38667627               a3tcLd|7J  
    20% >       0.46553746               d*0 RBgn  
    10% >       0.50064115                )ffaOS!\  
    _9 ]:0bDUo  
    End of Run. |JxVfX8^  
    ehr-o7](  
    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 1 _?8OU  
    D=TS IJ@  
    VAz4@r7hkq  
    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 LV^^Bd8Ct  
    q[,p#uJ]  
    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                 Qr$'Q7  
    80% >       0.22748071                 vB8$Qx\J  
    50% >       0.38667627                 &Hb%Q! ^Kb  
    20% >       0.46553746                 1=R$ RI  
    10% >       0.50064115 _z@/~M(  
    jIubJQR~  
    最后这个数值是MTF值呢，还是MTF的公差？ n/_q  
    g,Ob/g8uc  
    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？？？   *7xcwj eP  
    z9aR/:W}  
    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  : "@G[:(BoB<  
    90% >       0.20977951                 m*y&z'e\  
    80% >       0.22748071                 :E")Zw&sW3  
    50% >       0.38667627                 @aS)=|Ls\  
    20% >       0.46553746                 }g+kU1y  
    10% >       0.50064115 .YF1H<gwa  
    ....... w9|x{B  
    Biv)s@"f-Q  
    [c B^6v  
    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   B{/og*xd*1  
    Mode                : Sensitivities #da{3>z:  
    Sampling            : 2 _$UJ'W})/  
    Nominal Criterion   : 0.54403234 kZ5#a)U<  
    Test Wavelength     : 0.6328 $#rkvG_w  
    q(n"r0)=  
    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？ RG'iWA,9m`  
    r|l?2 eO~  
    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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