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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 '{7A1yJnY%  
    ,eZ'pxt  
    {/ty{  
    wx57dm+  
    然后添加了默认公差分析，基本没变 /&kTVuN"(  
    A\SbuRty  
    j l7e6#zu  
    [{Y$]3?}  
    然后运行分析的结果如下： *b7v)d#  
    Qh{=Z^r  
    Analysis of Tolerances | C2k(  
    g5T~%t5lo  
    File : E:\光学设计资料\zemax练习\f500.ZMX w$& 10  
    Title: wI`uAZ="  
    Date : TUE JUN 21 2011 Ebq5P$  
    }4bwLO  
    Units are Millimeters. S++}kR);  
    All changes are computed using linear differences. (:hPT-1  
    q.g!WLiI  
    Paraxial Focus compensation only. 9Y/c<gbY  
    f'#7i@Je  
    WARNING: Solves should be removed prior to tolerancing. bAW;2 NB  
    z?yADYr9  
    Mnemonics: !(o)*S  
    TFRN: Tolerance on curvature in fringes. Ay2|@1e  
    TTHI: Tolerance on thickness. B!8]\D  
    TSDX: Tolerance on surface decentering in x. &Nec(q<  
    TSDY: Tolerance on surface decentering in y. 2+Fq'!  
    TSTX: Tolerance on surface tilt in x (degrees). mFo6f\DHr`  
    TSTY: Tolerance on surface tilt in y (degrees). Q2tGe~H  
    TIRR: Tolerance on irregularity (fringes). WOg_Pn9HI  
    TIND: Tolerance on Nd index of refraction. AS8T!  
    TEDX: Tolerance on element decentering in x. Mr`u!T&sc  
    TEDY: Tolerance on element decentering in y. #}B~V3UD  
    TETX: Tolerance on element tilt in x (degrees). {&2$1p/9'  
    TETY: Tolerance on element tilt in y (degrees). Ii4 Byyfx  
    ;APg!5X  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. {yfG_J  
    }7&;YAt  
    WARNING: Boundary constraints on compensators will be ignored. ^ S%4R'  
    /,B"H@ J  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm bu$5gGWVf  
    Mode                : Sensitivities -gC=%0sp\  
    Sampling            : 2 a?D\H5TF-  
    Nominal Criterion   : 0.54403234 1`h`-dqr#  
    Test Wavelength     : 0.6328 X}? cAo2N  
    xorFz{  
    <xc"y|7X  
    Fields: XY Symmetric Angle in degrees O81})r*Y  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Nzr zLK  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 w0 "h,{  
    >~ne(n4qy  
    Sensitivity Analysis: (]iw#m{  
    l "d&Sgnj  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| P= S)V   
    Type                      Value      Criterion        Change          Value      Criterion        Change 5M*ZZ+YX  
    Fringe tolerance on surface 1 w0Us8JNGz  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 SIbQs8h]  
    Change in Focus                :      -0.000000                            0.000000 * y`^Fc  
    Fringe tolerance on surface 2 X1A;MA@0Ro  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 -;Hd_ ~O>j  
    Change in Focus                :       0.000000                            0.000000 9K)OQDv%6D  
    Fringe tolerance on surface 3 W_kJb  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 BT`6v+,h7k  
    Change in Focus                :      -0.000000                            0.000000 (}Gl'.>\M  
    Thickness tolerance on surface 1 8n2* z  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 "-I>  
    Change in Focus                :       0.000000                            0.000000 8U=M.FFp  
    Thickness tolerance on surface 2 2{{M{#}S.  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 mu:Q2t^  
    Change in Focus                :       0.000000                           -0.000000 ( XE`,#  
    Decenter X tolerance on surfaces 1 through 3 hgsE"H<V  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 }*? e w  
    Change in Focus                :       0.000000                            0.000000 5*4P_q(AxD  
    Decenter Y tolerance on surfaces 1 through 3 m ;[z)-&"  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ~L4"t_-  
    Change in Focus                :       0.000000                            0.000000 bt~-=\  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 3>?ip;  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 }3N8EmS  
    Change in Focus                :       0.000000                            0.000000 &A%#LVjf  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) )u[ 2TI1  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 &_!BMzp4  
    Change in Focus                :       0.000000                            0.000000 LfF<wDvXf  
    Decenter X tolerance on surface 1 a eP4%h  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 #7'ww*+  
    Change in Focus                :       0.000000                            0.000000 @ZT25CD  
    Decenter Y tolerance on surface 1 YBg\L$| n  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 :X@;XEol~  
    Change in Focus                :       0.000000                            0.000000 Tk+\Biq   
    Tilt X tolerance on surface (degrees) 1 EStHl(DUPq  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 A$|> Jt  
    Change in Focus                :       0.000000                            0.000000 -4X,x  
    Tilt Y tolerance on surface (degrees) 1 6G1Z"9<2*  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 YS~\Gls%  
    Change in Focus                :       0.000000                            0.000000 +F 5Dc  
    Decenter X tolerance on surface 2 6 *Q5.g  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 {J|P2a[  
    Change in Focus                :       0.000000                            0.000000 1 w\Y ._jK  
    Decenter Y tolerance on surface 2 kv)LH{  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 WhK?>u  
    Change in Focus                :       0.000000                            0.000000 93YD\R+q  
    Tilt X tolerance on surface (degrees) 2 =Jem.Ph  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ZZlR:D  
    Change in Focus                :       0.000000                            0.000000 '8%aq8  
    Tilt Y tolerance on surface (degrees) 2 (U-p&q>z  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 hW/*]7AM^  
    Change in Focus                :       0.000000                            0.000000 m<OxO\Mpf  
    Decenter X tolerance on surface 3 wX|]8f2Z  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 +Cau/sPXL  
    Change in Focus                :       0.000000                            0.000000 Kji}2j'a  
    Decenter Y tolerance on surface 3 l:faI&o.@  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ")Bf^DV  
    Change in Focus                :       0.000000                            0.000000 b6]M}ixK  
    Tilt X tolerance on surface (degrees) 3 *TMg.  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 u,oxUySeG  
    Change in Focus                :       0.000000                            0.000000 21cIWvy  
    Tilt Y tolerance on surface (degrees) 3 tkJ/ h<  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 v~@Y_ `l  
    Change in Focus                :       0.000000                            0.000000 _NZ) n)  
    Irregularity of surface 1 in fringes EB\z:n5  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 KAUYE^  
    Change in Focus                :       0.000000                            0.000000 6`+DBr  
    Irregularity of surface 2 in fringes -=g`7^qa>  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Jl5<9x  
    Change in Focus                :       0.000000                            0.000000 ;tKL/eI  
    Irregularity of surface 3 in fringes c#G(7.0MU  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 l~f +h?cF  
    Change in Focus                :       0.000000                            0.000000 vTB*J,6.  
    Index tolerance on surface 1 9|#h )*  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 EBebyQcon  
    Change in Focus                :       0.000000                            0.000000 S - 7JDE>  
    Index tolerance on surface 2 #XmN&83_  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 8YYY *>  
    Change in Focus                :       0.000000                           -0.000000 a(}jn|  
    Xe+Hez,  
    Worst offenders: V7^?jy&&  
    Type                      Value      Criterion        Change ^5GS !u"  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 %:oGyV7a  
    TSTY   2             0.20000000     0.35349910    -0.19053324 r#{lpF,3Ib  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 /CZOO)n  
    TSTX   2             0.20000000     0.35349910    -0.19053324 U&B~GJT+  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 B,gQeW&  
    TSTY   1             0.20000000     0.42678383    -0.11724851 @MN>ye'T  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 j*6!7u.,K  
    TSTX   1             0.20000000     0.42678383    -0.11724851 qi/%&)GZ  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 yp :yS  
    TSTY   3             0.20000000     0.42861670    -0.11541563 B8IfE`  
    4wNxn lP  
    Estimated Performance Changes based upon Root-Sum-Square method: Wx XVL"  
    Nominal MTF                 :     0.54403234 mCq*@1Lp9  
    Estimated change            :    -0.36299231 6 a$%  
    Estimated MTF               :     0.18104003 +_`F@^R_   
    2QBtwlQ?[  
    Compensator Statistics: tG#F7%+E  
    Change in back focus: tv;3~Y0i  
    Minimum            :        -0.000000 Mz"kaO  
    Maximum            :         0.000000 J4co@=AJ  
    Mean               :        -0.000000 Z:n33xh=<  
    Standard Deviation :         0.000000 t@4vEKw?.X  
    n_c0=YH  
    Monte Carlo Analysis: bxyU[`  
    Number of trials: 20 ^Xb!dnT.*a  
    huR<+ =!  
    Initial Statistics: Normal Distribution >#8`Zy:/Y  
    j+Tk|GRab  
      Trial       Criterion        Change {O"dj;RU  
          1     0.42804416    -0.11598818 IGI2).$[  
    Change in Focus                :      -0.400171 .y'OoDe  
          2     0.54384387    -0.00018847 K:9.fTCs*  
    Change in Focus                :       1.018470 cu""vtK   
          3     0.44510003    -0.09893230 S[ 2`7'XV  
    Change in Focus                :      -0.601922 j#~4JGZt  
          4     0.18154684    -0.36248550 pF8'S{y  
    Change in Focus                :       0.920681 $iF7hyZ  
          5     0.28665820    -0.25737414 1w5p*U0 ;  
    Change in Focus                :       1.253875 PH=wP ft  
          6     0.21263372    -0.33139862 k}<mmKB  
    Change in Focus                :      -0.903878 0\ gE^=o[  
          7     0.40051424    -0.14351809 C3memimN  
    Change in Focus                :      -1.354815 9PR&/Q F5  
          8     0.48754161    -0.05649072 RhDa`kV%t  
    Change in Focus                :       0.215922 ?px x,o6l  
          9     0.40357468    -0.14045766 as\V, {<  
    Change in Focus                :       0.281783 ll5Kd=3  
         10     0.26315315    -0.28087919 \zoJr)  
    Change in Focus                :      -1.048393 o-(jSaH :;  
         11     0.26120585    -0.28282649 o@>5[2b4  
    Change in Focus                :       1.017611 %R_8`4IQ  
         12     0.24033815    -0.30369419 <LLSUk/  
    Change in Focus                :      -0.109292 JE?XZp@V  
         13     0.37164046    -0.17239188 %ZZ}TUI W  
    Change in Focus                :      -0.692430 .}0Cg2W  
         14     0.48597489    -0.05805744 h7Ma`w\-  
    Change in Focus                :      -0.662040 DSIa3! 0  
         15     0.21462327    -0.32940907 Lv5AtZl}  
    Change in Focus                :       1.611296 v=L^jw  
         16     0.43378226    -0.11025008 , n EeI&  
    Change in Focus                :      -0.640081 g xLA1]>{  
         17     0.39321881    -0.15081353 f{b"=hQ  
    Change in Focus                :       0.914906 J}.p6E~j  
         18     0.20692530    -0.33710703 @%jzVF7  
    Change in Focus                :       0.801607 qI'a|p4fn?  
         19     0.51374068    -0.03029165 -'I)2/%g  
    Change in Focus                :       0.947293 'uPqe.#?  
         20     0.38013374    -0.16389860 j5RM S V  
    Change in Focus                :       0.667010 *vj5J"Y(;t  
    :{Y,Nsa  
    Number of traceable Monte Carlo files generated: 20 nGuF, 0j  
    `bxgg'V  
    Nominal     0.54403234 ^y h  
    Best        0.54384387    Trial     2 +6TKk~0e^  
    Worst       0.18154684    Trial     4 I015)vFc  
    Mean        0.35770970 W*_ifZ0s.  
    Std Dev     0.11156454 E@N_~1  
    Db3tI#  
    EoY570PN  
    Compensator Statistics: HAU8H'h  
    Change in back focus: fNlUc  
    Minimum            :        -1.354815 u4Xrvfb,  
    Maximum            :         1.611296 k r/[|.bq  
    Mean               :         0.161872 F4:ssy^  
    Standard Deviation :         0.869664 +-{H T+W  
    DLz~$TF^  
    90% >       0.20977951               0_j!t  
    80% >       0.22748071               D)mqe-%1  
    50% >       0.38667627               Eu0 _/{:  
    20% >       0.46553746               f"PApV9[  
    10% >       0.50064115                pQqZ4L6v  
    t<`BaU  
    End of Run. UV:_5"-  
    .+8w\>w6g  
    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 v0HFW%YJ^J  
    :oZ30}  
    S[%86(,*gP  
    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 <4VUzgX2  
    C f<,\Aav  
    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                 QQ pe.oF  
    80% >       0.22748071                 3F<My+J  
    50% >       0.38667627                 W4X=.vr  
    20% >       0.46553746                 rq+E"Uj?  
    10% >       0.50064115 e)GFJ3sW_  
    [NyR$yD{  
    最后这个数值是MTF值呢，还是MTF的公差？ X}_kLfP/9  
    qd(`~a  
    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？？？   vJK0>":G  
    Xul<,U~w6  
    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  :  vtk0 j  
    90% >       0.20977951                 =ss(~[  
    80% >       0.22748071                 leR-oeSO  
    50% >       0.38667627                 :qy< G!o  
    20% >       0.46553746                 THEpW{.E  
    10% >       0.50064115 /Ps/m!  
    ....... (_1(<Jw  
    HQGn[7JW  
    .FYxVF.  
    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   DL<b)# h#  
    Mode                : Sensitivities %'o'Kh''=  
    Sampling            : 2 y Ny,$1  
    Nominal Criterion   : 0.54403234 &;3iHY;  
    Test Wavelength     : 0.6328 \*yH33B9  
    ERTjY%A  
    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？ 1L;3e@G  
    unvS`>)Np  
    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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