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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 !nykq}kPN\  
    Jbs:}]2  
    0&EX -DbV  
    t,MK#Ko  
    然后添加了默认公差分析，基本没变 7N'F]x  
    V <k_Q@K  
    z<@$$Z=0UF  
    *TMg.  
    然后运行分析的结果如下： $ar:5kif  
    sW=@G'}3  
    Analysis of Tolerances R HF;AX n  
    +ES.O]?>  
    File : E:\光学设计资料\zemax练习\f500.ZMX >A1Yn]k  
    Title: s"a*S\a;b  
    Date : TUE JUN 21 2011 WqTW@-}ID  
    6`+DBr  
    Units are Millimeters. -'YX2!IU,  
    All changes are computed using linear differences. ~2"|4  
    J-X5n 3I&  
    Paraxial Focus compensation only. 5B98}N  
    _&BnET  
    WARNING: Solves should be removed prior to tolerancing. ([$F5 q1TR  
    DJ<e=F!  
    Mnemonics: h` n>6I  
    TFRN: Tolerance on curvature in fringes. -Fl3m  
    TTHI: Tolerance on thickness. 8q0f#/`v  
    TSDX: Tolerance on surface decentering in x. :0srFg?X  
    TSDY: Tolerance on surface decentering in y. 0@xuxm/i  
    TSTX: Tolerance on surface tilt in x (degrees). t_j.@|/FZ  
    TSTY: Tolerance on surface tilt in y (degrees). BkO"{  
    TIRR: Tolerance on irregularity (fringes). V-X n&s  
    TIND: Tolerance on Nd index of refraction. Pu*st=KGB  
    TEDX: Tolerance on element decentering in x. TyK; q{  
    TEDY: Tolerance on element decentering in y. ~I'Z=Wo  
    TETX: Tolerance on element tilt in x (degrees). {0QA+[Yd&!  
    TETY: Tolerance on element tilt in y (degrees). ,e>ugI_;*  
    $G=\i>R.  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. s:fnOMv "  
    FyY;F;4P  
    WARNING: Boundary constraints on compensators will be ignored. $9b||L  
    _Juhl^LM;  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm ? th+~dE  
    Mode                : Sensitivities |\}f)Xp-  
    Sampling            : 2 `Cb$8;)z  
    Nominal Criterion   : 0.54403234 .b]oB_  
    Test Wavelength     : 0.6328 525xm"Bs  
    X^@d@xU4v  
    i!Ne<Q  
    Fields: XY Symmetric Angle in degrees bUqO.FZ[  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY {'vvE3iZ  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 TbX ZU$[c  
    3@}_ F<"*  
    Sensitivity Analysis: _wX'u,HrC  
    mKn[>M1  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| tL IE^  
    Type                      Value      Criterion        Change          Value      Criterion        Change Q!|71{5U  
    Fringe tolerance on surface 1 RF6|zCWuI  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 c=Z#7?k=Uz  
    Change in Focus                :      -0.000000                            0.000000 95(VY)_6#A  
    Fringe tolerance on surface 2 &7<~Q\XZbI  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 XRNL;X%}7  
    Change in Focus                :       0.000000                            0.000000 _ !Ph1  
    Fringe tolerance on surface 3 (m,O!935f  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 $MsM$]~  
    Change in Focus                :      -0.000000                            0.000000 s%/0WW0y^  
    Thickness tolerance on surface 1 z&- `<uV~  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 NuXU2w~  
    Change in Focus                :       0.000000                            0.000000 RP(FV<ot  
    Thickness tolerance on surface 2 |Z "h q  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 [S9nF  
    Change in Focus                :       0.000000                           -0.000000 #u2PAZ@qd  
    Decenter X tolerance on surfaces 1 through 3 ?Ts Z_  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 =+"XV8Fi,  
    Change in Focus                :       0.000000                            0.000000 [hiOFmMJZ-  
    Decenter Y tolerance on surfaces 1 through 3 ___+5r21\  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 hpw;w}m  
    Change in Focus                :       0.000000                            0.000000 dkVVvK  
    Tilt X tolerance on surfaces 1 through 3 (degrees) xbmOch}j6  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 R'80{  
    Change in Focus                :       0.000000                            0.000000 nF//y}  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) @lBH@HR=C  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 .}0Cg2W  
    Change in Focus                :       0.000000                            0.000000 y24 0 +;a  
    Decenter X tolerance on surface 1 3yZ@i<rfH  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 dA_s7),  
    Change in Focus                :       0.000000                            0.000000 /evh.S  
    Decenter Y tolerance on surface 1 oF3#]6`;/  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 %Ajf|Go0/G  
    Change in Focus                :       0.000000                            0.000000 I4") ;T3  
    Tilt X tolerance on surface (degrees) 1 {uhw ^)v  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Nls|R  
    Change in Focus                :       0.000000                            0.000000 "%Rx;xw|  
    Tilt Y tolerance on surface (degrees) 1 @cXY"hP`  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 T$q]iSgu  
    Change in Focus                :       0.000000                            0.000000 D)!k  
    Decenter X tolerance on surface 2 '~a!~F~>  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 xAoozDj  
    Change in Focus                :       0.000000                            0.000000 ] #J ]f  
    Decenter Y tolerance on surface 2 *.K}`89T  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 c(eu[vj:  
    Change in Focus                :       0.000000                            0.000000 5\a5^FK~  
    Tilt X tolerance on surface (degrees) 2 2[:`w),.  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 _mn4z+  
    Change in Focus                :       0.000000                            0.000000 LAvAjvRc  
    Tilt Y tolerance on surface (degrees) 2 PSy=O\  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 [PU.lRq  
    Change in Focus                :       0.000000                            0.000000 3*'!,gK~[  
    Decenter X tolerance on surface 3  k/t4  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 "OWq]q#  
    Change in Focus                :       0.000000                            0.000000 )qxL@w.  
    Decenter Y tolerance on surface 3 gmM79^CEF  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 *D9QwQ _|  
    Change in Focus                :       0.000000                            0.000000 uS&bfx2  
    Tilt X tolerance on surface (degrees) 3 zz$*upxK  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 V1Fdt+#  
    Change in Focus                :       0.000000                            0.000000 7zNyH(.  
    Tilt Y tolerance on surface (degrees) 3 g,q&A$Wi  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 N(IUNL  
    Change in Focus                :       0.000000                            0.000000 _ Fer-nQ2R  
    Irregularity of surface 1 in fringes ?=fJu\;  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 PmTA3aH  
    Change in Focus                :       0.000000                            0.000000 "? R$9i  
    Irregularity of surface 2 in fringes R!-RSkB  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 E>7[ti_p5  
    Change in Focus                :       0.000000                            0.000000 MbJV)*Q  
    Irregularity of surface 3 in fringes muY4:F.C(  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 b0 5h,  
    Change in Focus                :       0.000000                            0.000000 J M`uIVnNA  
    Index tolerance on surface 1 XCk \#(VSE  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 @F=4B0=  
    Change in Focus                :       0.000000                            0.000000 u'iOa  
    Index tolerance on surface 2 8ayB<b>+]"  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 kgA')]  
    Change in Focus                :       0.000000                           -0.000000 gjwp' GN  
    `4$" mO>+  
    Worst offenders: 6 .*=1P*?  
    Type                      Value      Criterion        Change x0 j$]$  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 V%3K")  
    TSTY   2             0.20000000     0.35349910    -0.19053324 K.1#cf ^'  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 |}#Rn`*2y  
    TSTX   2             0.20000000     0.35349910    -0.19053324 |KkVt]ZQe9  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 d F),  
    TSTY   1             0.20000000     0.42678383    -0.11724851 "Z,'NL>&  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Hm*n ,8_  
    TSTX   1             0.20000000     0.42678383    -0.11724851 F+}MW/ra@  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 92S<TAdPP  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ?}O\'Fa8  
    [P"#?7 N  
    Estimated Performance Changes based upon Root-Sum-Square method: ;Qw>&24h[  
    Nominal MTF                 :     0.54403234 7kj#3(e  
    Estimated change            :    -0.36299231 wG -X833\(  
    Estimated MTF               :     0.18104003 " Z#&A  
    obY5taOw  
    Compensator Statistics: sg2T)^*V  
    Change in back focus: ;K`qSX;;c(  
    Minimum            :        -0.000000 "tm2YUG},s  
    Maximum            :         0.000000 8+lM6O ~!  
    Mean               :        -0.000000 TTBl5X  
    Standard Deviation :         0.000000 # Z8<H  
    A5 /Q:8b  
    Monte Carlo Analysis: 6 Rg{^ERf  
    Number of trials: 20 e6,/ i  
    k;q|pQ[  
    Initial Statistics: Normal Distribution yn`H}@`k  
    MdCEp1Z  
      Trial       Criterion        Change \z0"  
          1     0.42804416    -0.11598818 `@-H ;  
    Change in Focus                :      -0.400171 PT|t6V"wd  
          2     0.54384387    -0.00018847 \_0nH`  
    Change in Focus                :       1.018470 `WX @1]m  
          3     0.44510003    -0.09893230 LzP+l>m  
    Change in Focus                :      -0.601922 CH!Lf,G  
          4     0.18154684    -0.36248550 Nx,.4CI  
    Change in Focus                :       0.920681 n:'Mpux  
          5     0.28665820    -0.25737414 ..;}EFw5  
    Change in Focus                :       1.253875 \M<C6m5  
          6     0.21263372    -0.33139862 F0])g  
    Change in Focus                :      -0.903878 ?%#3p[  
          7     0.40051424    -0.14351809 <mi*AY  
    Change in Focus                :      -1.354815 'IKV%$k  
          8     0.48754161    -0.05649072 |3QKxS0  
    Change in Focus                :       0.215922 x^xlH!Sc  
          9     0.40357468    -0.14045766 %h(J+_"L6  
    Change in Focus                :       0.281783 'z>|N{-xG  
         10     0.26315315    -0.28087919 e@w-4G(;  
    Change in Focus                :      -1.048393 !S$LRm\ '  
         11     0.26120585    -0.28282649 Jvgx+{Xu  
    Change in Focus                :       1.017611 aF]4%E  
         12     0.24033815    -0.30369419 .\".}4qQ  
    Change in Focus                :      -0.109292 *FmY4w  
         13     0.37164046    -0.17239188 ?45bvkCT  
    Change in Focus                :      -0.692430 H0LEK(K  
         14     0.48597489    -0.05805744 .T#h5[S2x  
    Change in Focus                :      -0.662040 ko2?q  
         15     0.21462327    -0.32940907 zU}Ru&T9  
    Change in Focus                :       1.611296 |@!4BA  
         16     0.43378226    -0.11025008 Lzm9Kh;  
    Change in Focus                :      -0.640081 F^fL  
         17     0.39321881    -0.15081353 $oDc  
    Change in Focus                :       0.914906 Hyh$-iCa  
         18     0.20692530    -0.33710703 x2%xrlv<J/  
    Change in Focus                :       0.801607 Py_yIwQqg  
         19     0.51374068    -0.03029165 nc4KeEl  
    Change in Focus                :       0.947293 >cpT_M&C,  
         20     0.38013374    -0.16389860 Y HSdaocp  
    Change in Focus                :       0.667010 mu@He&w"  
    Utd`T+AF*  
    Number of traceable Monte Carlo files generated: 20 ~ HN  
    $F2 A  
    Nominal     0.54403234 4L)#ku$jW  
    Best        0.54384387    Trial     2 n W:P"L  
    Worst       0.18154684    Trial     4 KW`^uoY$  
    Mean        0.35770970 @komb IK  
    Std Dev     0.11156454 w#0/&\ b=  
    m~c6b{F3Z-  
    v'=$K[_  
    Compensator Statistics: vLCyT=OB`  
    Change in back focus: {8p<iY- %  
    Minimum            :        -1.354815 )09>#!*  
    Maximum            :         1.611296 \USl 9*E  
    Mean               :         0.161872 2 8>  
    Standard Deviation :         0.869664 2 zE gAc  
    .=G ?Zd  
    90% >       0.20977951               _Fe%Ek1Yy  
    80% >       0.22748071               =^ZDP1h/}  
    50% >       0.38667627               BLaF++Fop  
    20% >       0.46553746               94.|l  
    10% >       0.50064115                pz4lC=H%o  
    E>_N|j)9  
    End of Run. '< =77yDg  
    <DR$WsDG  
    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 BcXPgM!Xqz  
    p ; ]Qxh  
    }vK8P r%  
    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 zy'e|92aO  
    a=_:`S]}  
    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                 a! 3eZ,  
    80% >       0.22748071                 qTz5P  
    50% >       0.38667627                 S&F[\4w5]  
    20% >       0.46553746                 BU<Qp$ &  
    10% >       0.50064115 : #OaE,  
    tISb' ^T  
    最后这个数值是MTF值呢，还是MTF的公差？ uquY z_2  
    p`Ok(C_  
    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？？？   >r>pM(h  
    l0PXU)>C  
    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  : T9AFL;1  
    90% >       0.20977951                 mpzm6I eu  
    80% >       0.22748071                 5r^u7k  
    50% >       0.38667627                 mW#p&{  
    20% >       0.46553746                 5Y5N   
    10% >       0.50064115 K>Tv M&  
    ....... lmx'w  
    ,Z(J;~  
    (o8?j^ -v  
    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   =)2!qoE  
    Mode                : Sensitivities )%9 P ;/  
    Sampling            : 2 Zc*gRC  
    Nominal Criterion   : 0.54403234 {pEbi)CF,}  
    Test Wavelength     : 0.6328 oBzjEv  
    E#,n.U>#)  
    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*ZIBTb 9  
    .{LJ  
    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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