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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 \L"0Pmt[  
    Q|7;Zsd:  
    zKFiCP K  
    &W%fsy<  
    然后添加了默认公差分析，基本没变 !RwMUnp  
    Q+p9^_r  
     h 3V; J  
    I @ D<rjR  
    然后运行分析的结果如下： -# /'^O +%  
    o$Z]qhq  
    Analysis of Tolerances wUH:l  
    ;-VXp80J  
    File : E:\光学设计资料\zemax练习\f500.ZMX 6 - IThC  
    Title: 6c*QBzNL  
    Date : TUE JUN 21 2011 /J!~0~F  
    L RPdA "Z  
    Units are Millimeters. ?3do-tTp  
    All changes are computed using linear differences. s:J QV  
    8*EqG5OP  
    Paraxial Focus compensation only. m0]Lc{  
    Lv@'v4.({  
    WARNING: Solves should be removed prior to tolerancing. p{;FO?  
    ?:Rw[T@ l  
    Mnemonics: K}QZdN']  
    TFRN: Tolerance on curvature in fringes. })C}'!+]  
    TTHI: Tolerance on thickness. xpWY4Q  
    TSDX: Tolerance on surface decentering in x. 95*=& d  
    TSDY: Tolerance on surface decentering in y. .2SD)<}(9  
    TSTX: Tolerance on surface tilt in x (degrees). nBtKSNT#Q  
    TSTY: Tolerance on surface tilt in y (degrees). g3c,x kaO  
    TIRR: Tolerance on irregularity (fringes). Oe&gTXo  
    TIND: Tolerance on Nd index of refraction. p5#UH  
    TEDX: Tolerance on element decentering in x. &,'CHBM  
    TEDY: Tolerance on element decentering in y. ?-=<7 ~$  
    TETX: Tolerance on element tilt in x (degrees). 4K$_d,4`U  
    TETY: Tolerance on element tilt in y (degrees). w%~Mg3|  
    m">2XGCn  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. j5m]zh5\J=  
    <1E5[9 q  
    WARNING: Boundary constraints on compensators will be ignored. O[ug7\cl+  
    CUx [LZR7m  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm U?j[ 8z  
    Mode                : Sensitivities )@6iQ  
    Sampling            : 2 ,R=)^Gh{  
    Nominal Criterion   : 0.54403234 bE b+oRI  
    Test Wavelength     : 0.6328 {=,+;/0  
    p*~b5'+ C+  
    T_oL/x_;  
    Fields: XY Symmetric Angle in degrees ( \7Yo^  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY M8|kmF\B  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 J"Nn.iVq  
    {$'oKJy*  
    Sensitivity Analysis: % {A%SDh  
    d>Ky(wS  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| trlZ  
    Type                      Value      Criterion        Change          Value      Criterion        Change 2Jqr"|sw  
    Fringe tolerance on surface 1 9C: V i  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 4GexYDk'#  
    Change in Focus                :      -0.000000                            0.000000 PF:'dv  
    Fringe tolerance on surface 2 TTo5"r9I 8  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 1  Lz  
    Change in Focus                :       0.000000                            0.000000 g4GU28l  
    Fringe tolerance on surface 3 %] !xr6d  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 a t%qowt  
    Change in Focus                :      -0.000000                            0.000000 8\m[Nuq5  
    Thickness tolerance on surface 1 =HHb ]JE  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 <'vtnz  
    Change in Focus                :       0.000000                            0.000000 I~25}(IDZ"  
    Thickness tolerance on surface 2 6bUcrw/# p  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 NQ,2pM<*-  
    Change in Focus                :       0.000000                           -0.000000 sLW e \o  
    Decenter X tolerance on surfaces 1 through 3 ,<fs+oi  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 bqRO-\vO  
    Change in Focus                :       0.000000                            0.000000 e4 -7&8N+  
    Decenter Y tolerance on surfaces 1 through 3 yOyuMZo6  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 fi'\{!!3m^  
    Change in Focus                :       0.000000                            0.000000 |L~RC  
    Tilt X tolerance on surfaces 1 through 3 (degrees) eI+p  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 v.Xmrry  
    Change in Focus                :       0.000000                            0.000000 cTL W}4m%g  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) Env_??xq  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 /y- 8dgv0a  
    Change in Focus                :       0.000000                            0.000000 w s7LDY&(  
    Decenter X tolerance on surface 1 X,`e1nsR  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 lfte   
    Change in Focus                :       0.000000                            0.000000 e# KP3Lp  
    Decenter Y tolerance on surface 1 sF1j4 NC  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 VevDW }4q*  
    Change in Focus                :       0.000000                            0.000000 P;ovPyoO  
    Tilt X tolerance on surface (degrees) 1 xN44>3#  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 2UEjn>2  
    Change in Focus                :       0.000000                            0.000000  o*xft6U  
    Tilt Y tolerance on surface (degrees) 1 @T~~aQFk  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 G/&Wc2k  
    Change in Focus                :       0.000000                            0.000000 YBQ{/"v%|  
    Decenter X tolerance on surface 2 z_L><}H  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 z=K hbh  
    Change in Focus                :       0.000000                            0.000000 ;a`I8Fj  
    Decenter Y tolerance on surface 2 Mgg m~|9)  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 \(ju0qFqH  
    Change in Focus                :       0.000000                            0.000000 vp`s< ;CA  
    Tilt X tolerance on surface (degrees) 2 h2vD*W  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 `D0H u!;  
    Change in Focus                :       0.000000                            0.000000 K7]QgfpSZ  
    Tilt Y tolerance on surface (degrees) 2 }&LLo  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Kl w9  
    Change in Focus                :       0.000000                            0.000000  +D|E8sz8  
    Decenter X tolerance on surface 3 N@\`DO  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 1IWP~G  
    Change in Focus                :       0.000000                            0.000000 "ac$S9@~  
    Decenter Y tolerance on surface 3 r $&WwH2^  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 B-[qS;PY%  
    Change in Focus                :       0.000000                            0.000000 cGS7s 8U  
    Tilt X tolerance on surface (degrees) 3 2g%p9-MO]I  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 w>6 cc#>q  
    Change in Focus                :       0.000000                            0.000000 ;g_<i_ *x#  
    Tilt Y tolerance on surface (degrees) 3 9v(k<('_  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 X>ck.}F  
    Change in Focus                :       0.000000                            0.000000 ]McDN[h:  
    Irregularity of surface 1 in fringes 6|]e}I@<2  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 <{1=4PA  
    Change in Focus                :       0.000000                            0.000000 \mDBOC0eK  
    Irregularity of surface 2 in fringes G*rlU  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 M]A!jWtE  
    Change in Focus                :       0.000000                            0.000000 9NausE40  
    Irregularity of surface 3 in fringes ZG Qz@H5  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 H]Vo XJ\*  
    Change in Focus                :       0.000000                            0.000000 GaLQ/V2R  
    Index tolerance on surface 1 E>k!d'+tb  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Un\ T} c  
    Change in Focus                :       0.000000                            0.000000 hbE~.[Y2r  
    Index tolerance on surface 2 :U/x(  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 YH'j"|{  
    Change in Focus                :       0.000000                           -0.000000 aui3Mq#f  
    &HJ'//bv  
    Worst offenders: KU (g Zy  
    Type                      Value      Criterion        Change _W gpk 0  
    TSTY   2            -0.20000000     0.35349910    -0.19053324  El |Y]f  
    TSTY   2             0.20000000     0.35349910    -0.19053324 -)p| i~j^A  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 lH%-#2]  
    TSTX   2             0.20000000     0.35349910    -0.19053324 |TCg`ZS`cZ  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 GbJVw\5Z*  
    TSTY   1             0.20000000     0.42678383    -0.11724851 v_NL2eQ~  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 ,w0Io   
    TSTX   1             0.20000000     0.42678383    -0.11724851 8 J;\Z  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 &T\,kq >)  
    TSTY   3             0.20000000     0.42861670    -0.11541563 :x36Z4:  
    C}(9SASs%  
    Estimated Performance Changes based upon Root-Sum-Square method: R6-Z]H u  
    Nominal MTF                 :     0.54403234 QLOcgU^  
    Estimated change            :    -0.36299231 jt6,id)&  
    Estimated MTF               :     0.18104003 _A,mY6 *  
    btWvoKO*  
    Compensator Statistics: C^nTLw;K  
    Change in back focus: s!WI:E7  
    Minimum            :        -0.000000 esK0H<]  
    Maximum            :         0.000000 B%/N{i*Z  
    Mean               :        -0.000000 ]%Z7wF</  
    Standard Deviation :         0.000000 %S]g8O[}nl  
    GKa_6X_  
    Monte Carlo Analysis: 6'qu[ ~ }Q  
    Number of trials: 20 2*}qQ0J  
    >PoVK{&y  
    Initial Statistics: Normal Distribution 1$1P9x@H  
    ^ 9FRI9?  
      Trial       Criterion        Change tW} At  
          1     0.42804416    -0.11598818 )m.U"giG++  
    Change in Focus                :      -0.400171 ioJr2wq6  
          2     0.54384387    -0.00018847 zE1=*zO`  
    Change in Focus                :       1.018470 gkL{]*9&%  
          3     0.44510003    -0.09893230 ##|]el%Y  
    Change in Focus                :      -0.601922 #Iwxt3K  
          4     0.18154684    -0.36248550 *W$bhC'w  
    Change in Focus                :       0.920681 dI) 9@UL  
          5     0.28665820    -0.25737414 ,'>O#kD  
    Change in Focus                :       1.253875 p@jwHlX  
          6     0.21263372    -0.33139862 ysFp`  
    Change in Focus                :      -0.903878 p5JRG2zt  
          7     0.40051424    -0.14351809 q o tWWe#  
    Change in Focus                :      -1.354815 jC_m0Iwc  
          8     0.48754161    -0.05649072 klSAY  
    Change in Focus                :       0.215922 ?"L ^ 0%  
          9     0.40357468    -0.14045766 *g!7PzJ'  
    Change in Focus                :       0.281783 )l[bu6bM  
         10     0.26315315    -0.28087919 #0'%51Jcl  
    Change in Focus                :      -1.048393 V3q[#.o  
         11     0.26120585    -0.28282649 l{4rKqtX  
    Change in Focus                :       1.017611 F7IZ;4cp  
         12     0.24033815    -0.30369419 a/dq+  
    Change in Focus                :      -0.109292 m\e?'-(s  
         13     0.37164046    -0.17239188 t(:w):zE  
    Change in Focus                :      -0.692430 ^F:Bj&0v[  
         14     0.48597489    -0.05805744 @t4OpU<'*b  
    Change in Focus                :      -0.662040 -SN6&-#c_  
         15     0.21462327    -0.32940907 5Sz}gP('  
    Change in Focus                :       1.611296 =U,mzY (  
         16     0.43378226    -0.11025008 v]X*(e  
    Change in Focus                :      -0.640081 ]1&} L^a  
         17     0.39321881    -0.15081353 #gSLFM{p  
    Change in Focus                :       0.914906 }B@44HdY  
         18     0.20692530    -0.33710703 $c}-/U 8  
    Change in Focus                :       0.801607 /[+%<5s  
         19     0.51374068    -0.03029165 LGT?/ gup  
    Change in Focus                :       0.947293 R/Z zmb{  
         20     0.38013374    -0.16389860 ,WtJ&S7?  
    Change in Focus                :       0.667010 Z,7VOf6g  
    }0~X)Vgm(  
    Number of traceable Monte Carlo files generated: 20 |ZtNCB5{^j  
    'mO>hD`V  
    Nominal     0.54403234 Er@OmNT  
    Best        0.54384387    Trial     2 17F<vo>l%  
    Worst       0.18154684    Trial     4 "WZ|   
    Mean        0.35770970 7mtX/w9  
    Std Dev     0.11156454 ! q5qA*  
    p,7, tx  
    tQ(4UHqa~  
    Compensator Statistics: Nx=rw h  
    Change in back focus: ]8CgHT[^7  
    Minimum            :        -1.354815 ppzQh1  
    Maximum            :         1.611296 6os{q`/Q])  
    Mean               :         0.161872 20cEE>  
    Standard Deviation :         0.869664  D`3`5.b  
    +0g L!r  
    90% >       0.20977951               ^]MLEr!S  
    80% >       0.22748071               p> g[: ~  
    50% >       0.38667627               bk:mk[  
    20% >       0.46553746               vX|5*T`(  
    10% >       0.50064115                "NtY[sT{V  
    ,-[z?dvO  
    End of Run. 0t7vg#v|  
    t^~Qv  
    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 V G|FjD  
    _ o.j({S  
    |dhKeg_  
    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 v n4z C  
    2]=`^rC*  
    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                 -e"A)Bpl(  
    80% >       0.22748071                 +lxjuEiae  
    50% >       0.38667627                 tAsap}(  
    20% >       0.46553746                 SDB \6[D  
    10% >       0.50064115 Zz"8  
    2M=h:::W  
    最后这个数值是MTF值呢，还是MTF的公差？ ~r~YR=  
    b!bg sd  
    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？？？   -Aojk8tc  
    No`*->R  
    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  : xT]t3'y|-  
    90% >       0.20977951                 /]^Y\U^  
    80% >       0.22748071                 /,\U*'-  
    50% >       0.38667627                 "w%:5~u 9  
    20% >       0.46553746                 kmX9)TMVO  
    10% >       0.50064115 v/9DD%An  
    ....... ]WYV  
    tsL ; wT_  
    oKsArZG  
    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   \fUX_0k9,  
    Mode                : Sensitivities [#mk TY  
    Sampling            : 2 ;b*qunJ3L  
    Nominal Criterion   : 0.54403234 w~)tEN>  
    Test Wavelength     : 0.6328 $BMXjXd}  
    'E9{qPLk(  
    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？ OQ hQ!6  
    ;W|NG3_y  
    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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