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    [讨论]公差分析结果的疑问 [复制链接]

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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 $3ZQ|X[|+  
    'Ce?!U O  
    2S[:mnK  
    >){}nlQf  
    然后添加了默认公差分析，基本没变 z-"P raP  
    9asA-'fZ  
    Al *yx_j  
    g1y@z8Z{  
    然后运行分析的结果如下： Yb[)ETf^  
    10r!p: D  
    Analysis of Tolerances @(N} {om  
    LL+_zBP.   
    File : E:\光学设计资料\zemax练习\f500.ZMX \)aFYDq#\  
    Title: *&h]PhY  
    Date : TUE JUN 21 2011 ,qV7$u  
    j!;E>`g  
    Units are Millimeters. Kg /,  
    All changes are computed using linear differences. BV/ ^S.~  
     _PwPLSg  
    Paraxial Focus compensation only. KZ65# UVX  
    Gb"kl.j  
    WARNING: Solves should be removed prior to tolerancing. S?D]P'<  
    V!TGFo}  
    Mnemonics: "^ dMCS@  
    TFRN: Tolerance on curvature in fringes. #\_FSr fX  
    TTHI: Tolerance on thickness. =0;njL(7;  
    TSDX: Tolerance on surface decentering in x. gd7! +6  
    TSDY: Tolerance on surface decentering in y. E\9HZ;}G  
    TSTX: Tolerance on surface tilt in x (degrees). U!BZs Vx  
    TSTY: Tolerance on surface tilt in y (degrees). +J A\by  
    TIRR: Tolerance on irregularity (fringes). Y q|OX<i`K  
    TIND: Tolerance on Nd index of refraction. + I*a=qjq  
    TEDX: Tolerance on element decentering in x. !g|[A7<|  
    TEDY: Tolerance on element decentering in y. BPOT!-  
    TETX: Tolerance on element tilt in x (degrees). Y$|KY/)H)  
    TETY: Tolerance on element tilt in y (degrees).  3(*vZ  
    m|]"e@SF2  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. dV*9bDkM/  
    h*Mi/\  
    WARNING: Boundary constraints on compensators will be ignored. (58r9WhS  
    3fYfj  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm }h3[QUVf%  
    Mode                : Sensitivities or7l} X  
    Sampling            : 2 c@j3L23B  
    Nominal Criterion   : 0.54403234 LJ z6)kz  
    Test Wavelength     : 0.6328 :Z83*SPc  
     91fZ r  
    tv]9n8v  
    Fields: XY Symmetric Angle in degrees  7(o:J  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY *N6sxFs  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 (Bpn9}F-V.  
    DwTVoCC  
    Sensitivity Analysis: g]?>6 %#rA  
    k@>(sXs  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| l Yj$ 3  
    Type                      Value      Criterion        Change          Value      Criterion        Change XN3'k[  
    Fringe tolerance on surface 1 &*Kk> 4  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 oXVx9dZ  
    Change in Focus                :      -0.000000                            0.000000 |gT8QP  
    Fringe tolerance on surface 2 9El{>&Fs4  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 AJ#YjkO>]  
    Change in Focus                :       0.000000                            0.000000 E429<LQI/  
    Fringe tolerance on surface 3 eG.s|0`  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ;1r|Bx<5  
    Change in Focus                :      -0.000000                            0.000000 Cw5 B p9  
    Thickness tolerance on surface 1 4:s,e<Tc4v  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ZlcEeG  
    Change in Focus                :       0.000000                            0.000000 a:1$idj  
    Thickness tolerance on surface 2 lXVh`+X/l  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 2';{o=TXV  
    Change in Focus                :       0.000000                           -0.000000 wRX#^;O9?>  
    Decenter X tolerance on surfaces 1 through 3 h`p=~u +  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 @v\8+0  
    Change in Focus                :       0.000000                            0.000000 =66'33l2  
    Decenter Y tolerance on surfaces 1 through 3 4#B 56f8  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 _@_EQ!=  
    Change in Focus                :       0.000000                            0.000000 e%=SgXl2t  
    Tilt X tolerance on surfaces 1 through 3 (degrees) LGYg@DR  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 G//hZwf0  
    Change in Focus                :       0.000000                            0.000000 %w/vKB"nO  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) og4mLoLA  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 |2jA4C2L}  
    Change in Focus                :       0.000000                            0.000000 ,"?8  
    Decenter X tolerance on surface 1 @$~;vS  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 emT/H 95|,  
    Change in Focus                :       0.000000                            0.000000 Zb<D%9  
    Decenter Y tolerance on surface 1 h5v=h>c  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 "_+8z_  
    Change in Focus                :       0.000000                            0.000000 J7kqyo"  
    Tilt X tolerance on surface (degrees) 1 ]#'& x%m  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ; 2aPhA  
    Change in Focus                :       0.000000                            0.000000 "z*?#&?,  
    Tilt Y tolerance on surface (degrees) 1 !&{"tL@.  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 wF*9%K'E  
    Change in Focus                :       0.000000                            0.000000 }:]CXrdg>  
    Decenter X tolerance on surface 2 X#fjIrn  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 /:C<{m.[}  
    Change in Focus                :       0.000000                            0.000000 NBw{  
    Decenter Y tolerance on surface 2 gzDfx&.0  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 8RcLs1n/  
    Change in Focus                :       0.000000                            0.000000 @E"lN  
    Tilt X tolerance on surface (degrees) 2 K[Vj+qdyl  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ZT<VDcP{  
    Change in Focus                :       0.000000                            0.000000 Wo5%@C#M  
    Tilt Y tolerance on surface (degrees) 2 \9R=fA18  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 _C,9c7K4  
    Change in Focus                :       0.000000                            0.000000 l,UOP[j  
    Decenter X tolerance on surface 3 E<@N4%K_Q  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 R}D[ z7  
    Change in Focus                :       0.000000                            0.000000 ]\/"-Y#4Q  
    Decenter Y tolerance on surface 3 /^WOrMR  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 oE,TA2  
    Change in Focus                :       0.000000                            0.000000 tF.N  
    Tilt X tolerance on surface (degrees) 3 _Ec"[xW  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 nZEew .T:6  
    Change in Focus                :       0.000000                            0.000000 j-| !QlB  
    Tilt Y tolerance on surface (degrees) 3 D"IxQ2}k  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 uF[~YJ>  
    Change in Focus                :       0.000000                            0.000000 R%`fd *g  
    Irregularity of surface 1 in fringes AN)r(86L  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 f @Vd'k<  
    Change in Focus                :       0.000000                            0.000000 ~ ^fb`f+%  
    Irregularity of surface 2 in fringes tY#Zl 54~{  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 yqP=6   
    Change in Focus                :       0.000000                            0.000000 G\~?.s|^  
    Irregularity of surface 3 in fringes 6lUC$B Y  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 "@t bm[  
    Change in Focus                :       0.000000                            0.000000 XQ8q)B=  
    Index tolerance on surface 1 p ^9o*k`u  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Yaz/L)Y;R  
    Change in Focus                :       0.000000                            0.000000 28 zZ3|Z3  
    Index tolerance on surface 2 ~JP3C5q  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ~Q}!4LH  
    Change in Focus                :       0.000000                           -0.000000 g@Rs.Zq  
    CV2#G*  
    Worst offenders: Ve<f}  
    Type                      Value      Criterion        Change :`uu[^  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 Emw]`  
    TSTY   2             0.20000000     0.35349910    -0.19053324 2#s8Dxt  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 LXTtV0F  
    TSTX   2             0.20000000     0.35349910    -0.19053324 n3$u9!|P  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ;s8\F]K  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ?A-f_0<0  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 "6v_<t`q"  
    TSTX   1             0.20000000     0.42678383    -0.11724851 w}e_ 17A  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 D$E#:[  
    TSTY   3             0.20000000     0.42861670    -0.11541563 l8e)|MSh  
    \ rKUPI\  
    Estimated Performance Changes based upon Root-Sum-Square method: hBhbcWD,ka  
    Nominal MTF                 :     0.54403234 $9u:Ox 2  
    Estimated change            :    -0.36299231 -z%->OUu  
    Estimated MTF               :     0.18104003 *w/N>:V0p  
    !/X>k{  
    Compensator Statistics: at1 oxmy  
    Change in back focus: U~dqxR"Q  
    Minimum            :        -0.000000 ZvK.X*~s  
    Maximum            :         0.000000 z 0F55<i  
    Mean               :        -0.000000 c{qTVi5e  
    Standard Deviation :         0.000000 O9N+<sU=X  
    2-@t,T  
    Monte Carlo Analysis: $x#qv1  
    Number of trials: 20 XEN-V-Z%*  
    6o*'Q8h  
    Initial Statistics: Normal Distribution 'ITZz n*  
    YdUcO.V  
      Trial       Criterion        Change VFm)!'=I  
          1     0.42804416    -0.11598818 !(3[z>  
    Change in Focus                :      -0.400171  '{cFr  
          2     0.54384387    -0.00018847 $4og{  
    Change in Focus                :       1.018470 GH&5m44   
          3     0.44510003    -0.09893230 12Fnv/[n'K  
    Change in Focus                :      -0.601922 k L4#  
          4     0.18154684    -0.36248550 ngk:q5Tp  
    Change in Focus                :       0.920681 @g*[}`8]y  
          5     0.28665820    -0.25737414 Y@qugQM>  
    Change in Focus                :       1.253875 IoV"t,  
          6     0.21263372    -0.33139862 5glEV`.je  
    Change in Focus                :      -0.903878 a.ijc>K  
          7     0.40051424    -0.14351809 G;U SVF-'K  
    Change in Focus                :      -1.354815 dP#7ev]'  
          8     0.48754161    -0.05649072 ZT`" {#L  
    Change in Focus                :       0.215922 p0}Yo8?OW  
          9     0.40357468    -0.14045766 ,'sDauFn  
    Change in Focus                :       0.281783 e-.(O8  
         10     0.26315315    -0.28087919 h]IoH0/  
    Change in Focus                :      -1.048393 kV3LFPf>0  
         11     0.26120585    -0.28282649 A;f)`i0l,  
    Change in Focus                :       1.017611 S&;)F|-q  
         12     0.24033815    -0.30369419 $#wi2Ve=6b  
    Change in Focus                :      -0.109292 = \K/ulZo  
         13     0.37164046    -0.17239188 Z&h:3;  
    Change in Focus                :      -0.692430 ::3[H$  
         14     0.48597489    -0.05805744 4`7~~:W!M5  
    Change in Focus                :      -0.662040 ?zVcP=p@  
         15     0.21462327    -0.32940907 wzZ]| C(vp  
    Change in Focus                :       1.611296 C;9P6^Oz  
         16     0.43378226    -0.11025008 > :0N)Pj  
    Change in Focus                :      -0.640081 IWwOP{ <ZQ  
         17     0.39321881    -0.15081353 mM_gOd  
    Change in Focus                :       0.914906 nhd.c2t\  
         18     0.20692530    -0.33710703 =c]We:I  
    Change in Focus                :       0.801607 TPY&O{ q  
         19     0.51374068    -0.03029165 -W: @3\{  
    Change in Focus                :       0.947293 6.a>7-K}%  
         20     0.38013374    -0.16389860 kHQn' r6  
    Change in Focus                :       0.667010 5bol)Z9BO  
    .dvs&+I  
    Number of traceable Monte Carlo files generated: 20 ZT,au SX  
    0t*PQ%  
    Nominal     0.54403234 R/2L9Lcv  
    Best        0.54384387    Trial     2 $lJ!f  
    Worst       0.18154684    Trial     4 7JY9#+?p>  
    Mean        0.35770970 |@?='E?h  
    Std Dev     0.11156454 "'>fTk_  
    :73T9/  
    dLf ;g}W  
    Compensator Statistics: r 2{7h>  
    Change in back focus: <YWu/\{KT  
    Minimum            :        -1.354815 ")fgQ3XZ  
    Maximum            :         1.611296 a &`^M  
    Mean               :         0.161872 SO~pe$c-  
    Standard Deviation :         0.869664 m 7+=w>o  
    9mpQusM  
    90% >       0.20977951               37V$Qb_  
    80% >       0.22748071               ](IOn:MuDE  
    50% >       0.38667627               |6`7kb;p  
    20% >       0.46553746               kC'm |Y@T  
    10% >       0.50064115                "{jVsih0  
    9  I&[6}  
    End of Run. = @FT$GQ  
    T8j<\0WW  
    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 +ERuZc$3,  
    f1d<xGx  
    BpF}H^V-  
    是大于0.6左右的，难道我按照这个默认的公差来加工的话，只有10%的才可能大于0.5？那太低了啊，请问这该怎么进行进一步处理。或者之前哪有问题 EE qlsH  
    9 Lqz:4}  
    不吝赐教
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    只看该作者 1楼 发表于: 2011-06-21
    我又试了试，原来是得根据上面的结果不断修改公差，放松或者变紧，然后在做公差分析，不断提高蒙特卡罗的结果。但是比如就拿我这个来说，理想是达到30lp处>0.6，那么实际做蒙特卡罗公差分析时，百分之多少以上的MTF是合格的呢？
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 6V1 Z(K  
    80% >       0.22748071                 <Oj'0NK-  
    50% >       0.38667627                 )/{~&L U  
    20% >       0.46553746                 ?gXdi<2Qn  
    10% >       0.50064115 X-%91z:o58  
    o^BX:\}  
    最后这个数值是MTF值呢，还是MTF的公差？ PC)V".W 1  
    3d_g@x#9  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   ab<7jfFIa  
    lq27^K  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : J(x42Q}*S  
    90% >       0.20977951                 pkEqd"G  
    80% >       0.22748071                 gA:N>w&<X  
    50% >       0.38667627                 %!Ak]|[7  
    20% >       0.46553746                 lnRbvulH  
    10% >       0.50064115 ik|iAWy  
    ....... n$(_(&  
    [ncOtDE  
    KdkZ-.  
    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   or1D 6 *'  
    Mode                : Sensitivities Z2u5n`K  
    Sampling            : 2 y%x2  
    Nominal Criterion   : 0.54403234 3xGk@ 333  
    Test Wavelength     : 0.6328 N_"mC^Vx  
    C@L8,Kj ~.  
    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？ F&om^G'U  
    K)C9)J<  
    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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