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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 (s.0P O`  
    |bTPtrT8  
    NW]Lj >0Y  
    KN<S}3MN  
    然后添加了默认公差分析，基本没变 w>pq+og&  
    %zG;Q@  
    h2Ld[xvCu%  
    >AVVEv18  
    然后运行分析的结果如下： tSc Pa,(  
    #M9~L[nF S  
    Analysis of Tolerances 39:bzUIF  
    ',9V|jvK  
    File : E:\光学设计资料\zemax练习\f500.ZMX -ws? "_w  
    Title: ^E;kgED5  
    Date : TUE JUN 21 2011 K"|l@Q[  
    ^q{9  
    Units are Millimeters. NjVYLn<.r  
    All changes are computed using linear differences. aI P  
    .~~nUu+M  
    Paraxial Focus compensation only. 4ezEW|S  
    6 Q%jA7  
    WARNING: Solves should be removed prior to tolerancing. g;pcZ9o  
    bo2H]PL*  
    Mnemonics: e>6y%v;  
    TFRN: Tolerance on curvature in fringes. ns9U/ :L  
    TTHI: Tolerance on thickness. |XQIfW]A  
    TSDX: Tolerance on surface decentering in x. L-ET<'u  
    TSDY: Tolerance on surface decentering in y. ck: T,F{}  
    TSTX: Tolerance on surface tilt in x (degrees). 6a[}'/  
    TSTY: Tolerance on surface tilt in y (degrees). 6HT ;#Znn  
    TIRR: Tolerance on irregularity (fringes). {m4b(t`xw  
    TIND: Tolerance on Nd index of refraction. s^Y"'`+  
    TEDX: Tolerance on element decentering in x. :ci5r;^  
    TEDY: Tolerance on element decentering in y. NCiW^#b  
    TETX: Tolerance on element tilt in x (degrees). KI)M JG:t  
    TETY: Tolerance on element tilt in y (degrees). C[ NS kr  
    [4YTDEv%  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. }tRm]w  
    NP0\i1P>.?  
    WARNING: Boundary constraints on compensators will be ignored. J[l7di5  
    r(:5kC8K  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 3 }duG/  
    Mode                : Sensitivities GZEc l'h*  
    Sampling            : 2 ,f~J`3(&  
    Nominal Criterion   : 0.54403234 ] ] !VK  
    Test Wavelength     : 0.6328 ,|3MG",@@h  
    F^WP<0C  
    p2#)A"  
    Fields: XY Symmetric Angle in degrees n`#tKwWHYx  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY {x|[p_?  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 3k\#CiB{  
    RiDJ> 6S  
    Sensitivity Analysis: C^O VB-  
    $mu^G t  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| t>L;kRujVJ  
    Type                      Value      Criterion        Change          Value      Criterion        Change i`(XLi}k  
    Fringe tolerance on surface 1 Z?6%;n^ 54  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 = i$Fl{vH  
    Change in Focus                :      -0.000000                            0.000000 ^NRl//  
    Fringe tolerance on surface 2 1a?!@g )  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 C].iCxn  
    Change in Focus                :       0.000000                            0.000000 )B T   
    Fringe tolerance on surface 3 m}C>ti`VD  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 (jnQ -  
    Change in Focus                :      -0.000000                            0.000000 3-[q4R  
    Thickness tolerance on surface 1 {>}!+k -`  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 B}n,b#,*  
    Change in Focus                :       0.000000                            0.000000 ;ic3).H  
    Thickness tolerance on surface 2 g,Lq)'N;O  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 .I7pA5V{#  
    Change in Focus                :       0.000000                           -0.000000 2a-w% (K  
    Decenter X tolerance on surfaces 1 through 3 EMh7z7}Rr  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 :G [|CPm-  
    Change in Focus                :       0.000000                            0.000000 /$ w%Q-p  
    Decenter Y tolerance on surfaces 1 through 3 ,`|3KE9  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 &:;:"{t}Do  
    Change in Focus                :       0.000000                            0.000000 hB "fhX  
    Tilt X tolerance on surfaces 1 through 3 (degrees) AS!?q  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 &b.=M>\9Q  
    Change in Focus                :       0.000000                            0.000000 v:f}XK<  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) -C;^ 3R[ O  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ?8I?'\F;  
    Change in Focus                :       0.000000                            0.000000 fFMlDg[];  
    Decenter X tolerance on surface 1 r(6Y*<  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 "~#3&3HVS  
    Change in Focus                :       0.000000                            0.000000 Tre]"2l  
    Decenter Y tolerance on surface 1 EOIN^4V"  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 :WjpzgPuN  
    Change in Focus                :       0.000000                            0.000000 wu7Lk3  
    Tilt X tolerance on surface (degrees) 1 {'N Z.  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 US+Q~GTA  
    Change in Focus                :       0.000000                            0.000000 aEFJ;n7m  
    Tilt Y tolerance on surface (degrees) 1 X@'u y<tI-  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Ye\rB\-  
    Change in Focus                :       0.000000                            0.000000 rxVanDb=W  
    Decenter X tolerance on surface 2 cpe+XvBuK  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 &SIq2>QA  
    Change in Focus                :       0.000000                            0.000000 tGD6AI1"I  
    Decenter Y tolerance on surface 2 tnV/xk#!  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 8Ry3`ct  
    Change in Focus                :       0.000000                            0.000000 + @A  
    Tilt X tolerance on surface (degrees) 2 j5QuAU8  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ls?~+\Jb  
    Change in Focus                :       0.000000                            0.000000 AhCW'.  
    Tilt Y tolerance on surface (degrees) 2 N"pc,Q\xU  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 *!4Z#Y  
    Change in Focus                :       0.000000                            0.000000 /vY(o1o x  
    Decenter X tolerance on surface 3 5Iy|BRU(%  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 &)YQvTzs  
    Change in Focus                :       0.000000                            0.000000 }HL]yDO  
    Decenter Y tolerance on surface 3 m-%E-nr  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 <>n0arAn  
    Change in Focus                :       0.000000                            0.000000 aFc1|.Nm  
    Tilt X tolerance on surface (degrees) 3 6 +Sxr  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 }^4Xv^dW>g  
    Change in Focus                :       0.000000                            0.000000 sWQfr$^A  
    Tilt Y tolerance on surface (degrees) 3 Eav[/cU  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 d)B@x`  
    Change in Focus                :       0.000000                            0.000000 bADnW4N`6;  
    Irregularity of surface 1 in fringes aC^\(wp[  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 b IH;  
    Change in Focus                :       0.000000                            0.000000 ~< P 0]ju  
    Irregularity of surface 2 in fringes 5uGqX"  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 kJWn<5%ayg  
    Change in Focus                :       0.000000                            0.000000 x[4`fM.m*  
    Irregularity of surface 3 in fringes NWP5If|'X  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 hMzs*gK  
    Change in Focus                :       0.000000                            0.000000 OGBHos  
    Index tolerance on surface 1 zqd@EF6/bz  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 <i<J^-W  
    Change in Focus                :       0.000000                            0.000000 rjl`&POqc  
    Index tolerance on surface 2 5 VRYO"D:  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 pEw"8U  
    Change in Focus                :       0.000000                           -0.000000 f'8kish  
    7t3X)Ah  
    Worst offenders: []x#iOnC&  
    Type                      Value      Criterion        Change '#! gh?  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 +U:$(UV'A  
    TSTY   2             0.20000000     0.35349910    -0.19053324 s|@6S8E  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 )W|w C#  
    TSTX   2             0.20000000     0.35349910    -0.19053324 *RT>`,t/  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 gep;{G}  
    TSTY   1             0.20000000     0.42678383    -0.11724851 < |e,05aM  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 }L &^xe  
    TSTX   1             0.20000000     0.42678383    -0.11724851 W"724fwu&  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 .R`5 Qds*l  
    TSTY   3             0.20000000     0.42861670    -0.11541563 yH7F''O7  
    (VS5V31"  
    Estimated Performance Changes based upon Root-Sum-Square method: L%">iQOG#  
    Nominal MTF                 :     0.54403234 b>_o xK  
    Estimated change            :    -0.36299231 fz;iOjr>  
    Estimated MTF               :     0.18104003 | H!28h  
    B! rTD5a  
    Compensator Statistics: mrTlXXz  
    Change in back focus: |\w=u6jX  
    Minimum            :        -0.000000 <m:m &I 8@  
    Maximum            :         0.000000 $GYm6x\4  
    Mean               :        -0.000000 :d3bt~b'  
    Standard Deviation :         0.000000 7ByTnYe~S  
    PiYY6i0  
    Monte Carlo Analysis: l|xZk4@_uE  
    Number of trials: 20 F8hw #!Aq  
    {-ZFp  
    Initial Statistics: Normal Distribution hhb?6]Z/  
    _AYXc] 4%  
      Trial       Criterion        Change b6W2^tr-  
          1     0.42804416    -0.11598818 hp8%.V$f  
    Change in Focus                :      -0.400171  rL/H2[d  
          2     0.54384387    -0.00018847 r/& sub"X  
    Change in Focus                :       1.018470 uC.K<jD%  
          3     0.44510003    -0.09893230 2#o>Z4 r{  
    Change in Focus                :      -0.601922 D@G\7 KH@  
          4     0.18154684    -0.36248550 `J]fcE%T0R  
    Change in Focus                :       0.920681 S2n39 3  
          5     0.28665820    -0.25737414 &lR 6sb\  
    Change in Focus                :       1.253875 ;V^ 112|C  
          6     0.21263372    -0.33139862 ~SQ?BoCI[  
    Change in Focus                :      -0.903878 f5F@^QXQ  
          7     0.40051424    -0.14351809 l6(-I Tb  
    Change in Focus                :      -1.354815 '[J<=2&  
          8     0.48754161    -0.05649072 ##KBifU"  
    Change in Focus                :       0.215922 0- ><q  
          9     0.40357468    -0.14045766 Q=BZ N]g2  
    Change in Focus                :       0.281783 (E/lIou  
         10     0.26315315    -0.28087919 u7bLZU 0  
    Change in Focus                :      -1.048393 [qdRUV'  
         11     0.26120585    -0.28282649 Q#^Qv.s?K  
    Change in Focus                :       1.017611 Mmj;'iYOwF  
         12     0.24033815    -0.30369419 x??pBhJH  
    Change in Focus                :      -0.109292 jxiC Kx,G  
         13     0.37164046    -0.17239188 np%\&CVhN  
    Change in Focus                :      -0.692430 <Gav5R c  
         14     0.48597489    -0.05805744 J%V-Q>L  
    Change in Focus                :      -0.662040 gWrgnlq  
         15     0.21462327    -0.32940907 Ys -T0  
    Change in Focus                :       1.611296 :]rJGgK#  
         16     0.43378226    -0.11025008 bB }$'  
    Change in Focus                :      -0.640081 A; 5n:Sd  
         17     0.39321881    -0.15081353 zR `EU,  
    Change in Focus                :       0.914906 f} Np/  
         18     0.20692530    -0.33710703 76>7=#m0u'  
    Change in Focus                :       0.801607 1J6,]M  
         19     0.51374068    -0.03029165 xO1[>W  
    Change in Focus                :       0.947293 J~B<7O<?!1  
         20     0.38013374    -0.16389860 {*[\'!d--.  
    Change in Focus                :       0.667010 R-NS,i={  
    ]V-W~r=  
    Number of traceable Monte Carlo files generated: 20 p`nPhk,:b  
    !1n8vzs"c  
    Nominal     0.54403234 HODz*pI  
    Best        0.54384387    Trial     2 V?Z.\~  
    Worst       0.18154684    Trial     4 >RPd$('T  
    Mean        0.35770970 IGS1|  
    Std Dev     0.11156454 )foq),2  
    T|6jGZS^|W  
    Au{<hQ =  
    Compensator Statistics: {n/uh0>f*  
    Change in back focus: z^_*&  
    Minimum            :        -1.354815 5~Cakd ]>  
    Maximum            :         1.611296 61/.K_%I.  
    Mean               :         0.161872 xfy1pS.[:  
    Standard Deviation :         0.869664 fLDg~;3  
    CSGz3uC2D  
    90% >       0.20977951               pAb.c  
    80% >       0.22748071               8~90 30>Q  
    50% >       0.38667627               af#pR&4}   
    20% >       0.46553746               (T>nPbv)  
    10% >       0.50064115                -od!J\ KCy  
    AtU v71D:  
    End of Run. u$*56y   
    E Q4KV  
    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 cCo`~7rE  
    UbEb&9}  
    bV edFm  
    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 =8r 0 (c  
    AjJURn0`,!  
    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                 qw7@(R'"  
    80% >       0.22748071                 P y>{t4;S  
    50% >       0.38667627                 ~go fQ  
    20% >       0.46553746                 /0W9g  
    10% >       0.50064115 =/u% c!  
    )J_\tv  
    最后这个数值是MTF值呢，还是MTF的公差？ 21ppSN >  
    t~e<z81p  
    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？？？   ,bM-I2BR  
    ' zEI;v  
    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  : Z~6[ Z  
    90% >       0.20977951                 3Db3xN  
    80% >       0.22748071                 LF?P> 1%-  
    50% >       0.38667627                 ?-OPX_i_  
    20% >       0.46553746                 T#!lPH :&h  
    10% >       0.50064115 >Z Ke  
    ....... m ,>  
    /u`3VOn  
    BHj\G7,S  
    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   LS.r%:$mb  
    Mode                : Sensitivities !OcENV  
    Sampling            : 2 .G>t72DpU  
    Nominal Criterion   : 0.54403234 ~VTs:h  
    Test Wavelength     : 0.6328 Qbeeq6  
    5IqQ|/m<6  
    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？ 0y %L-:/c|  
    tkuc/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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