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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 9)n3f^,Oj*  
    %6&c3,?U\n  
    &#9HV  
    61sEeM  
    然后添加了默认公差分析，基本没变 =(bTS n  
    !G<gp4Js+N  
    ;g?o~ev 8  
    j*~z.Q|  
    然后运行分析的结果如下： O7J V{'?  
    w;kiH+&  
    Analysis of Tolerances "y ;0}9]n1  
    ,o0[^-b<  
    File : E:\光学设计资料\zemax练习\f500.ZMX sqj8I"<`  
    Title: ']H*f2y  
    Date : TUE JUN 21 2011 d7Z$/ $  
    A>)W6|m|  
    Units are Millimeters. dO9bxHMnM  
    All changes are computed using linear differences. 51;Bc[)%  
    3g0v,7,Zv  
    Paraxial Focus compensation only. nFefDdP  
    LRdV_O1e6M  
    WARNING: Solves should be removed prior to tolerancing. Ng*O/g`%L  
    cA{,2CYc  
    Mnemonics: n0uL^{B  
    TFRN: Tolerance on curvature in fringes. @y|JIBBRc  
    TTHI: Tolerance on thickness. " "CNw-^t  
    TSDX: Tolerance on surface decentering in x. >/.Ae8I)  
    TSDY: Tolerance on surface decentering in y. N`vPt?@  
    TSTX: Tolerance on surface tilt in x (degrees). Pb7-pu5 X  
    TSTY: Tolerance on surface tilt in y (degrees). )>pIAYCVP  
    TIRR: Tolerance on irregularity (fringes). o KY0e&5  
    TIND: Tolerance on Nd index of refraction. J|8 u  
    TEDX: Tolerance on element decentering in x. V|4k=_-  
    TEDY: Tolerance on element decentering in y. FX~pjM  
    TETX: Tolerance on element tilt in x (degrees). xoQqku"vn  
    TETY: Tolerance on element tilt in y (degrees). ZCDXy  
    %.:]4jhk  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. |jKFk.M  
    ~-A"M_n ?  
    WARNING: Boundary constraints on compensators will be ignored. T1RICIf 1F  
    hgdr\ F  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm )r XUJ29.  
    Mode                : Sensitivities Wf&i{3z[  
    Sampling            : 2 C1-Jj_XQ.  
    Nominal Criterion   : 0.54403234 `CG% Y>+  
    Test Wavelength     : 0.6328 hM8FN  
    z~jk_|?|?  
    TezwcFqH  
    Fields: XY Symmetric Angle in degrees F&OcI.OTXF  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY WwLV^m]  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 I$f'BAw  
    ?cD_\~  
    Sensitivity Analysis: $-n_$jLY  
    #aadnbf  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| bhCAx W  
    Type                      Value      Criterion        Change          Value      Criterion        Change ?1H>k<Jp  
    Fringe tolerance on surface 1 ASr3P5/  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 a*o k*r  
    Change in Focus                :      -0.000000                            0.000000 *C(q{|f  
    Fringe tolerance on surface 2 XE;aJ'kt  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 l, -q:8  
    Change in Focus                :       0.000000                            0.000000 ::Pf\Lb>  
    Fringe tolerance on surface 3 Bs<LJzS{V  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 f/i[? gw  
    Change in Focus                :      -0.000000                            0.000000 FNXVd/{M3  
    Thickness tolerance on surface 1 uJJP<mDgA  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 i]0$ 7s9!  
    Change in Focus                :       0.000000                            0.000000 .U,>Qn4/  
    Thickness tolerance on surface 2 7zu3o  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 )GJlQ1x  
    Change in Focus                :       0.000000                           -0.000000 -raZ6?Zjc  
    Decenter X tolerance on surfaces 1 through 3 $# b  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 XQj+]-m  
    Change in Focus                :       0.000000                            0.000000 X+//$J  
    Decenter Y tolerance on surfaces 1 through 3 <}AmzeHr+  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 w M#q [m;  
    Change in Focus                :       0.000000                            0.000000 vpu   
    Tilt X tolerance on surfaces 1 through 3 (degrees) L$}'6y/@  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 C,5Erb/  
    Change in Focus                :       0.000000                            0.000000 Cta!"=\  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) pEiq;2{~Yn  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 -V}ZbXJD  
    Change in Focus                :       0.000000                            0.000000 4,ewp coC%  
    Decenter X tolerance on surface 1 &0J/V>k  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 P)hawH=  
    Change in Focus                :       0.000000                            0.000000 Jl89}Sf  
    Decenter Y tolerance on surface 1 lziC.Dpa  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 i$4lBy_2  
    Change in Focus                :       0.000000                            0.000000 Wr.~Ns <  
    Tilt X tolerance on surface (degrees) 1 *q(HW  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 2$oGy  
    Change in Focus                :       0.000000                            0.000000 ^4>Icz^ F  
    Tilt Y tolerance on surface (degrees) 1 )auuk<  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 |1Ko5z  
    Change in Focus                :       0.000000                            0.000000 jp-]];:aPJ  
    Decenter X tolerance on surface 2 i<{/r-w=E  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Redxg.P  
    Change in Focus                :       0.000000                            0.000000 Q9 RCN<!  
    Decenter Y tolerance on surface 2 LP}YH W/  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Rj,M|9Y)o  
    Change in Focus                :       0.000000                            0.000000 CV6W)B%Se  
    Tilt X tolerance on surface (degrees) 2 -!ERe@k(  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 /M~rmIks  
    Change in Focus                :       0.000000                            0.000000 8\8%FSrc  
    Tilt Y tolerance on surface (degrees) 2 ?[ vC?P  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 | b)N;t  
    Change in Focus                :       0.000000                            0.000000 c#(&\g2H  
    Decenter X tolerance on surface 3 `H\NJ,  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 gPWl#5P:  
    Change in Focus                :       0.000000                            0.000000 1V1T1  
    Decenter Y tolerance on surface 3 8_ _C T  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 7)a u#K6  
    Change in Focus                :       0.000000                            0.000000 *wfkjG  
    Tilt X tolerance on surface (degrees) 3 ?C9>bKo*2H  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 c9;oB|8|  
    Change in Focus                :       0.000000                            0.000000 ]ch=D  
    Tilt Y tolerance on surface (degrees) 3 Q mn'G4#@E  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 BcD%`vGJ  
    Change in Focus                :       0.000000                            0.000000 K?aUIkVs  
    Irregularity of surface 1 in fringes t8FgQ)tk  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 @5(HRd  
    Change in Focus                :       0.000000                            0.000000 bLyG3~P;0  
    Irregularity of surface 2 in fringes Zu%oIk  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 eE;")t,  
    Change in Focus                :       0.000000                            0.000000 ;={Z Bx  
    Irregularity of surface 3 in fringes Q Ph6 p3bg  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 L\UM12  
    Change in Focus                :       0.000000                            0.000000 ;^:$O6J7T~  
    Index tolerance on surface 1 9 8eS f  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 J'y*>dW  
    Change in Focus                :       0.000000                            0.000000 quw:4W>  
    Index tolerance on surface 2 EM.rO/qcW  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 )?PRG=  
    Change in Focus                :       0.000000                           -0.000000 R|H_F#eVn}  
    oJTsrc_ -  
    Worst offenders: 4Vi&Y')f  
    Type                      Value      Criterion        Change 7 }sj&  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ss>?fyA  
    TSTY   2             0.20000000     0.35349910    -0.19053324 !4G<&hvb  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 LlG~aGhel  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Jv=G3=.  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 mF !=H%  
    TSTY   1             0.20000000     0.42678383    -0.11724851 +bK.{1  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 }~28UXb23  
    TSTX   1             0.20000000     0.42678383    -0.11724851 DY%#E9   
    TSTY   3            -0.20000000     0.42861670    -0.11541563 in6iJ*E@'  
    TSTY   3             0.20000000     0.42861670    -0.11541563 MhpR^VM'.  
    $R<eXDW6:  
    Estimated Performance Changes based upon Root-Sum-Square method: 3M&75OE  
    Nominal MTF                 :     0.54403234 lCyp&b#(L  
    Estimated change            :    -0.36299231 &Wup 7  
    Estimated MTF               :     0.18104003 RycO8z*p  
    ".SQ*'Oc  
    Compensator Statistics: AFSFXPl "  
    Change in back focus: /aB9pD+%  
    Minimum            :        -0.000000 5&r2a}K  
    Maximum            :         0.000000 lEC58`Ws  
    Mean               :        -0.000000 ~L'}!' &.  
    Standard Deviation :         0.000000 XJ;JDch  
    ico(4KSk  
    Monte Carlo Analysis: V-w[\u  
    Number of trials: 20 2v<[XNX  
    ,uP1U@Cas  
    Initial Statistics: Normal Distribution N7xkkAS{  
    ^MWfFpJV!]  
      Trial       Criterion        Change 7>m#Y'ppl@  
          1     0.42804416    -0.11598818 qEpP%p  
    Change in Focus                :      -0.400171 P( W8XC  
          2     0.54384387    -0.00018847 G#! j`  
    Change in Focus                :       1.018470 `v)-v<  
          3     0.44510003    -0.09893230 E 2DTE  
    Change in Focus                :      -0.601922 \(LHcvbb  
          4     0.18154684    -0.36248550 6X:- Z 3  
    Change in Focus                :       0.920681 VMW ?[j  
          5     0.28665820    -0.25737414 f:TC;K  
    Change in Focus                :       1.253875 L$x/T3@  
          6     0.21263372    -0.33139862 AsM""x1Ix  
    Change in Focus                :      -0.903878 gGU3e(!Uc  
          7     0.40051424    -0.14351809 F77[fp  
    Change in Focus                :      -1.354815 x9HA^Rj4-  
          8     0.48754161    -0.05649072 !+H=e>Y6  
    Change in Focus                :       0.215922 [zR raG\  
          9     0.40357468    -0.14045766 [M2,bc8SJV  
    Change in Focus                :       0.281783 9=I(AYG{m  
         10     0.26315315    -0.28087919 /BVNJNhz  
    Change in Focus                :      -1.048393 /7h%sCX  
         11     0.26120585    -0.28282649 s/Wg^(&M  
    Change in Focus                :       1.017611 D@Fa~O$75  
         12     0.24033815    -0.30369419 "O|fX\}5  
    Change in Focus                :      -0.109292 _ #l b\  
         13     0.37164046    -0.17239188 (vjQF$Hp  
    Change in Focus                :      -0.692430 9#6ilF:F  
         14     0.48597489    -0.05805744 | _~BV&g,N  
    Change in Focus                :      -0.662040 M)EUR0>8  
         15     0.21462327    -0.32940907 ~%Yh`c EP  
    Change in Focus                :       1.611296 AJ:@c7:eS  
         16     0.43378226    -0.11025008 YKl!M/  
    Change in Focus                :      -0.640081 uW[s?  
         17     0.39321881    -0.15081353 V|HSIJ#J  
    Change in Focus                :       0.914906 ^O\tN\g;c  
         18     0.20692530    -0.33710703 foE2rV/Y  
    Change in Focus                :       0.801607 L*h X_8J  
         19     0.51374068    -0.03029165 :N)7SYQT  
    Change in Focus                :       0.947293 3g2t{ %  
         20     0.38013374    -0.16389860 qm]ljut  
    Change in Focus                :       0.667010 `Xmpm4 ]  
    _I|wp<R  
    Number of traceable Monte Carlo files generated: 20 p|Rxy"}  
    dGh<R|U3  
    Nominal     0.54403234 WM=kr$/3  
    Best        0.54384387    Trial     2 q}BQu@'H  
    Worst       0.18154684    Trial     4 on&N=TN  
    Mean        0.35770970 TJsT .DWW~  
    Std Dev     0.11156454 p dnL~sv  
    ^#^u90I  
    ^ad> (W  
    Compensator Statistics: gYzKUX@  
    Change in back focus: [EGE|   
    Minimum            :        -1.354815 x5`q)!<&  
    Maximum            :         1.611296 x|<|eRYK  
    Mean               :         0.161872 F/EHU?_EI  
    Standard Deviation :         0.869664 "l +Jx|h\  
    6u:5]e8  
    90% >       0.20977951               _9 Gy`  
    80% >       0.22748071               ~Nc] `95  
    50% >       0.38667627               nVyb B~.=  
    20% >       0.46553746               ^2^ptQj  
    10% >       0.50064115                c@nl;u)n  
    )If[pw@j  
    End of Run. s:]rL&|  
    s.GhquFCrU  
    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 Q}fAAZ&7h  
    +Qc^A  
    ^*{ xTB57  
    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 U5Ho? `<  
    ":-)mfgGU  
    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                 _E30t( _.  
    80% >       0.22748071                 l.34h  
    50% >       0.38667627                 =6W:O  
    20% >       0.46553746                 zPw R1>gL  
    10% >       0.50064115 {!/y@/NK2  
    O\D({>  
    最后这个数值是MTF值呢，还是MTF的公差？ eLC&f}  
    G1nW{vce  
    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？？？   E%;'3Qykva  
    MV/~Rmd.  
    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  : Vf?#W,5>=  
    90% >       0.20977951                 Lm wh`oOl  
    80% >       0.22748071                 +hg\DqO^M  
    50% >       0.38667627                 j>o +}p?3I  
    20% >       0.46553746                 *!'&:  
    10% >       0.50064115 z/YMl3$l~  
    ....... N4To#Q1w  
    nF'xV44"  
    hf<$vRti>  
    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/=q_.1F>  
    Mode                : Sensitivities QWHy=(!  
    Sampling            : 2 /Tj"Fl\h  
    Nominal Criterion   : 0.54403234 RW 7oL:$dt  
    Test Wavelength     : 0.6328 =$8@JF'  
    B#aH\$_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？ V+qJrZ ,i  
    yvz?4m"_yB  
    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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