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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 %#4;'\'5  
    :-+][ [  
    E{-pkqx  
    NI:OL  
    然后添加了默认公差分析，基本没变 bg9_$laDi  
    &{WEtaXaa  
    }Dcpe M?  
    /^{Q(R(X<  
    然后运行分析的结果如下： GRL42xp'*D  
    / L$q8+  
    Analysis of Tolerances ZA_~o#0%  
    w U]8hkl?  
    File : E:\光学设计资料\zemax练习\f500.ZMX nf _(_O=  
    Title: +LWgby4q  
    Date : TUE JUN 21 2011 4u|6^ wu.I  
    gQ '=mU  
    Units are Millimeters. |%X_<Cpk  
    All changes are computed using linear differences. vcy+p]6KE-  
    eon(C|S7eK  
    Paraxial Focus compensation only. DVs$3RL  
    hI<$lEB  
    WARNING: Solves should be removed prior to tolerancing. r!>=G%  
    W^:g_  
    Mnemonics: w+%p4VkA<r  
    TFRN: Tolerance on curvature in fringes. `i!-@WN"  
    TTHI: Tolerance on thickness. s5d[sx  
    TSDX: Tolerance on surface decentering in x. Bt\V1)  
    TSDY: Tolerance on surface decentering in y. ;rCCkA6  
    TSTX: Tolerance on surface tilt in x (degrees). blbzh';0}  
    TSTY: Tolerance on surface tilt in y (degrees). /xA`VyHO  
    TIRR: Tolerance on irregularity (fringes). 6NFLk+kqN  
    TIND: Tolerance on Nd index of refraction. u*Y!=IT  
    TEDX: Tolerance on element decentering in x. wE <PXBl\b  
    TEDY: Tolerance on element decentering in y. c3Ig4n0Y>  
    TETX: Tolerance on element tilt in x (degrees). ok&v+A  
    TETY: Tolerance on element tilt in y (degrees). H:1F=$0I9  
    : SD3  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 99q$>nx,w  
    p_3VFKq>0  
    WARNING: Boundary constraints on compensators will be ignored. K,HR=5  
    kA4kQ}q  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm ?0E-Lac=  
    Mode                : Sensitivities =)6|lz^  
    Sampling            : 2 97 !VH> MX  
    Nominal Criterion   : 0.54403234 uUG&At  
    Test Wavelength     : 0.6328 pHDPj,lu  
    | -AR)Smt  
    q*>|EJR^Rw  
    Fields: XY Symmetric Angle in degrees a)L=+Z  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 8\Z/mU*4  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 %} Ob~m>P  
    dI8y}EbE~  
    Sensitivity Analysis: !3at(+4  
    KI<Vvc m  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| xF9PjnWF=  
    Type                      Value      Criterion        Change          Value      Criterion        Change +@oo8io  
    Fringe tolerance on surface 1 m4T` Tg#P  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 pe@/tO&I  
    Change in Focus                :      -0.000000                            0.000000 9o5_QnGE  
    Fringe tolerance on surface 2 i_;]UvP  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 2KmPZ&r  
    Change in Focus                :       0.000000                            0.000000 ) /<\|mR  
    Fringe tolerance on surface 3 I:#Es.  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 bPdbKi{j@  
    Change in Focus                :      -0.000000                            0.000000 qg@Wzs7c~  
    Thickness tolerance on surface 1 al\ R(\p|  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 e_pyjaY!s  
    Change in Focus                :       0.000000                            0.000000 # OQ(oyT  
    Thickness tolerance on surface 2 HPR*:t  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 =i)k@w_(x  
    Change in Focus                :       0.000000                           -0.000000 FmRa]31W  
    Decenter X tolerance on surfaces 1 through 3 AU +2'  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 \=/^H  
    Change in Focus                :       0.000000                            0.000000 s*j0uAq)up  
    Decenter Y tolerance on surfaces 1 through 3 m)9qO7P  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 (Sg52zv  
    Change in Focus                :       0.000000                            0.000000 APksY!  
    Tilt X tolerance on surfaces 1 through 3 (degrees) I806I@ix  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 $.@)4Nu!_  
    Change in Focus                :       0.000000                            0.000000 pb5'5X+  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) k/#& ]8(  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 i;>Hy|  
    Change in Focus                :       0.000000                            0.000000 P}QuGy[  
    Decenter X tolerance on surface 1 ='cr@[~i  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 cx8H.L  
    Change in Focus                :       0.000000                            0.000000 u{ .UZTn  
    Decenter Y tolerance on surface 1 NN W*  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 )#dP:  
    Change in Focus                :       0.000000                            0.000000 )rs);Pl  
    Tilt X tolerance on surface (degrees) 1 )xQA+$H#4  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 [sY>ac  
    Change in Focus                :       0.000000                            0.000000 Gx GZxf*(  
    Tilt Y tolerance on surface (degrees) 1 7Jm9,4]  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 )LwB  
    Change in Focus                :       0.000000                            0.000000 xCV3HnZ  
    Decenter X tolerance on surface 2 f13%[RA9N  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 i=<N4Vx  
    Change in Focus                :       0.000000                            0.000000 h&vq}  
    Decenter Y tolerance on surface 2 l~M86 h  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ,wlh0;,  
    Change in Focus                :       0.000000                            0.000000 r=+r5k"`  
    Tilt X tolerance on surface (degrees) 2 Gu:aSb  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 F3b[L^Km]  
    Change in Focus                :       0.000000                            0.000000 )*iSN*T8q  
    Tilt Y tolerance on surface (degrees) 2 NTVdSK7z~H  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 V< @]Iv  
    Change in Focus                :       0.000000                            0.000000 b&!7(Q[ sT  
    Decenter X tolerance on surface 3 }IGr%C(3%  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 +S:(cz80V  
    Change in Focus                :       0.000000                            0.000000 Z;W`deA  
    Decenter Y tolerance on surface 3 xxm1Nog6  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 H0s,tTK8  
    Change in Focus                :       0.000000                            0.000000 mIZ#uW  
    Tilt X tolerance on surface (degrees) 3 9\i,3:Qc  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 d]k >7.  
    Change in Focus                :       0.000000                            0.000000 *IGgbg[0  
    Tilt Y tolerance on surface (degrees) 3 - iS\3P.  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 )=X8kuB~  
    Change in Focus                :       0.000000                            0.000000 Y2w 9]:J  
    Irregularity of surface 1 in fringes W]n%$a  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 atFj Vk^  
    Change in Focus                :       0.000000                            0.000000 ue$\ i=jw  
    Irregularity of surface 2 in fringes c`y[V6q9  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Sj}@5 X6 C  
    Change in Focus                :       0.000000                            0.000000 <vA^%D<\~  
    Irregularity of surface 3 in fringes Ne.W-,X^cL  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840  OXzJ%&h  
    Change in Focus                :       0.000000                            0.000000 \sF}NBNT@  
    Index tolerance on surface 1 z1F[okLA  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 h]c-x(+  
    Change in Focus                :       0.000000                            0.000000 yU*j{>%RsK  
    Index tolerance on surface 2 HlY4%M5q/  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 7+j@0v\  
    Change in Focus                :       0.000000                           -0.000000 ^owEB%  
    d"nE+pgE  
    Worst offenders: C 9,p-  
    Type                      Value      Criterion        Change r%$-F2.p  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 |jaUVE_2[  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Zcz)FP#  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 Ps.O.2Z5ZB  
    TSTX   2             0.20000000     0.35349910    -0.19053324 ZsUxO%jP  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ^`\c;!)F<  
    TSTY   1             0.20000000     0.42678383    -0.11724851 lbgnO s,  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 ~c :e0}  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ?U2ed)zzw  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ?Gj$$IAe  
    TSTY   3             0.20000000     0.42861670    -0.11541563 gV!Eotq  
    co<){5zOT  
    Estimated Performance Changes based upon Root-Sum-Square method: aM3%Mx?w  
    Nominal MTF                 :     0.54403234 E[6JHBE*r  
    Estimated change            :    -0.36299231 )-[ 2vhXz  
    Estimated MTF               :     0.18104003 yK0Q,   
    .F?yt5{5No  
    Compensator Statistics: )"jG)c^1*  
    Change in back focus: 3. Qf^p  
    Minimum            :        -0.000000 _jK\+Zf  
    Maximum            :         0.000000 HPCgv?E3  
    Mean               :        -0.000000 o~gduNG#  
    Standard Deviation :         0.000000 ]<4Yor}t{;  
    E[t\LTt*n  
    Monte Carlo Analysis: N*lq)@smq  
    Number of trials: 20 av gGz8  
    RV^2[Gdi  
    Initial Statistics: Normal Distribution Q{H88g^=J  
    R/b)hP ~  
      Trial       Criterion        Change ?;|$R   
          1     0.42804416    -0.11598818 zScV 9,H1  
    Change in Focus                :      -0.400171 %6L!JN  
          2     0.54384387    -0.00018847 ;#3!ZB:}  
    Change in Focus                :       1.018470 \?GUGs  
          3     0.44510003    -0.09893230 .-`7Av+7  
    Change in Focus                :      -0.601922 b\][ x6zJp  
          4     0.18154684    -0.36248550 .+ai dWd  
    Change in Focus                :       0.920681 w^p 'D{{  
          5     0.28665820    -0.25737414 i{T0[\4  
    Change in Focus                :       1.253875 kdQ=%  
          6     0.21263372    -0.33139862 QCa$<~c  
    Change in Focus                :      -0.903878 6O$OM  
          7     0.40051424    -0.14351809 }N2T/U  
    Change in Focus                :      -1.354815 Kdx?s;i  
          8     0.48754161    -0.05649072 ECg/ge2  
    Change in Focus                :       0.215922 6peO9]Zy  
          9     0.40357468    -0.14045766 5^GUuFt5m  
    Change in Focus                :       0.281783 z:RwCd1\  
         10     0.26315315    -0.28087919 g}$]K! F  
    Change in Focus                :      -1.048393 ?*4&Z.~J  
         11     0.26120585    -0.28282649 k2<VUeW5  
    Change in Focus                :       1.017611 *FK!^Y  
         12     0.24033815    -0.30369419 o*f7/ZP1o  
    Change in Focus                :      -0.109292 lx U}HM  
         13     0.37164046    -0.17239188 Cg}cD.  
    Change in Focus                :      -0.692430 0RYh4'=F  
         14     0.48597489    -0.05805744 [*vk&  
    Change in Focus                :      -0.662040 _ 97F  
         15     0.21462327    -0.32940907 /ta-jOcRH&  
    Change in Focus                :       1.611296 H:,rNaz7D^  
         16     0.43378226    -0.11025008 T"in   
    Change in Focus                :      -0.640081 V2i*PK X  
         17     0.39321881    -0.15081353 lY.FmF}k  
    Change in Focus                :       0.914906 G0CmY43  
         18     0.20692530    -0.33710703 B\KvKT|\  
    Change in Focus                :       0.801607 WkXa%OZ  
         19     0.51374068    -0.03029165 -AD3Pd|Y[  
    Change in Focus                :       0.947293 Xy_+L_h^  
         20     0.38013374    -0.16389860 NLoJmOi;L7  
    Change in Focus                :       0.667010 B6MMn.  
    ,hT t]w  
    Number of traceable Monte Carlo files generated: 20 r$=iM:kERC  
    8g(%6 ET  
    Nominal     0.54403234 oSx]wZZ  
    Best        0.54384387    Trial     2 5z5#_*)O  
    Worst       0.18154684    Trial     4 |M)'@s:  
    Mean        0.35770970 :f 1*-y  
    Std Dev     0.11156454 tP"C >#LO  
    rVt6tx  
    'F5&f9 A  
    Compensator Statistics: 2e/ JFhA  
    Change in back focus: c[3sg  
    Minimum            :        -1.354815 +sQ=Uw#e  
    Maximum            :         1.611296 $ze%! C  
    Mean               :         0.161872 dF5EIPl;J  
    Standard Deviation :         0.869664 qg'RD]a>R  
    jC@$D*"J  
    90% >       0.20977951               eqZ V/a  
    80% >       0.22748071               (O\5gAx  
    50% >       0.38667627               2?z3s|+[  
    20% >       0.46553746               ] RN&s  
    10% >       0.50064115                sn@gchO9s  
    PUuxKW}  
    End of Run. k9~NIvnB`  
    _o'ii VDuD  
    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 d2Z5HFtY  
    /v U$62KA  
    UP58Cln*  
    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 =;l .<{<VH  
    E2Q;1Re@  
    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                 5^<X:1J$  
    80% >       0.22748071                 B 7zyMh   
    50% >       0.38667627                 V(I!HT5.W  
    20% >       0.46553746                 Ebw1 %W KC  
    10% >       0.50064115 IFcxyp  
    ROlef;/A  
    最后这个数值是MTF值呢，还是MTF的公差？  J -tOO  
    %X7R_>.   
    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？？？   |5oK04<  
    Yz(k4K L  
    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  : v C23  
    90% >       0.20977951                 LZ#=Ks  
    80% >       0.22748071                 B":9C'tip  
    50% >       0.38667627                 _V2^0CZ  
    20% >       0.46553746                 ^bM\:z"M  
    10% >       0.50064115 6=cfr; BH2  
    ....... m}UcF oaO  
    zH"a>+st=  
    ./ ]xn  
    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   N#``(a  
    Mode                : Sensitivities Ln'y 3~@  
    Sampling            : 2 8Y]% S9.  
    Nominal Criterion   : 0.54403234 i:a*6b.U@N  
    Test Wavelength     : 0.6328 a8WWFAC[  
    a}e GB +  
    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？ <{+U- ^rzR  
    Z%Pv,h'Q  
    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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