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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 ^+?|Qfi  
    5, b]V)4  
    9h(IUD{8  
    cy~oPj]j  
    然后添加了默认公差分析,基本没变 pw'wWZE'  
    :6;e\UE  
    ?TEK=mD#u  
    @kD8^,(oH  
    然后运行分析的结果如下: 9>,Qgp,w  
    '~-IV0v9  
    Analysis of Tolerances %c^ m\ E  
    |kiJ}oy  
    File : E:\光学设计资料\zemax练习\f500.ZMX o4=Yu7L  
    Title: hv)7H)|l~]  
    Date : TUE JUN 21 2011 Qu{c B^Ga*  
    Uedvc5><t  
    Units are Millimeters. N b3$4(F  
    All changes are computed using linear differences. 7y*ZXT]f  
     [~Hg}-c  
    Paraxial Focus compensation only. gp|1?L 54  
    B94 &elu  
    WARNING: Solves should be removed prior to tolerancing. qg,Nb  
    @Z\2*1y6  
    Mnemonics: X`20f1c6q>  
    TFRN: Tolerance on curvature in fringes. rPq<Xb\  
    TTHI: Tolerance on thickness. g{pQ4jKF  
    TSDX: Tolerance on surface decentering in x. r>qA $zD^  
    TSDY: Tolerance on surface decentering in y. ipKG!  
    TSTX: Tolerance on surface tilt in x (degrees). ,&a`d}g&G  
    TSTY: Tolerance on surface tilt in y (degrees). )wf\F6jN  
    TIRR: Tolerance on irregularity (fringes). 7S2C/f  
    TIND: Tolerance on Nd index of refraction. |9NIGg'n  
    TEDX: Tolerance on element decentering in x. DOL%'k?B  
    TEDY: Tolerance on element decentering in y. -4L!k'uR  
    TETX: Tolerance on element tilt in x (degrees). )@:l^$x  
    TETY: Tolerance on element tilt in y (degrees). $T dC/#7  
    9F_6}.O  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ~-Oa8ww  
    ? J|4l[x  
    WARNING: Boundary constraints on compensators will be ignored. 1 ycc5=.  
    (M% ;~y\  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm c>Z*/>~  
    Mode                : Sensitivities q=Xg*PM,  
    Sampling            : 2 rpU/s@%L  
    Nominal Criterion   : 0.54403234 , Fytk34  
    Test Wavelength     : 0.6328 Sr y,@p)  
    dl/X."iv!  
    3;BvnD7  
    Fields: XY Symmetric Angle in degrees ?ei%RWo  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY I5pp "*u  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ]O@"\_}  
    _p4}<pG  
    Sensitivity Analysis: mCb 9*|  
    tjb/[RQ  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| lIDl1Z@Z  
    Type                      Value      Criterion        Change          Value      Criterion        Change 6/y* 2z;  
    Fringe tolerance on surface 1 ?6:cNdN  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 8gpBz'/,  
    Change in Focus                :      -0.000000                            0.000000 FP;": iRL  
    Fringe tolerance on surface 2 {,V$*  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 q,,j',8kq/  
    Change in Focus                :       0.000000                            0.000000 ;6<zjV7}  
    Fringe tolerance on surface 3 +sn2Lw!^  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 T7GQ^WnA  
    Change in Focus                :      -0.000000                            0.000000 eti9nPjG  
    Thickness tolerance on surface 1 jyjQzt >\  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 UA0tFeH  
    Change in Focus                :       0.000000                            0.000000 ?Y!U*& 7  
    Thickness tolerance on surface 2 RSH/l;ii  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 !1-&Y'+  
    Change in Focus                :       0.000000                           -0.000000 i ^S2%qz  
    Decenter X tolerance on surfaces 1 through 3 |4xo4%BQ>  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 W8.j /K:  
    Change in Focus                :       0.000000                            0.000000 6e:P.HqjA  
    Decenter Y tolerance on surfaces 1 through 3 H0tF  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 83?1<v0%  
    Change in Focus                :       0.000000                            0.000000 l4 `^!  
    Tilt X tolerance on surfaces 1 through 3 (degrees) "w^Nu6  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 " ~n3iNkP  
    Change in Focus                :       0.000000                            0.000000 lu3.KOD/  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) E(/ sXji!  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 rys<-i(  
    Change in Focus                :       0.000000                            0.000000 ruHrv"29  
    Decenter X tolerance on surface 1 iwkJ~(5z  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 GXEcpc08  
    Change in Focus                :       0.000000                            0.000000 5\?3$<1 I  
    Decenter Y tolerance on surface 1 d q pgf@  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 @{bb'q['@  
    Change in Focus                :       0.000000                            0.000000 9i[4"&K  
    Tilt X tolerance on surface (degrees) 1 uri*lC  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ^cb)f_90  
    Change in Focus                :       0.000000                            0.000000 u !.DnKu  
    Tilt Y tolerance on surface (degrees) 1 cI3KB-lM#  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 M4H"].Zm  
    Change in Focus                :       0.000000                            0.000000 eRVY.E<  
    Decenter X tolerance on surface 2 uA^hCh-js  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 9RB`$5F ;  
    Change in Focus                :       0.000000                            0.000000 z1}1*F"  
    Decenter Y tolerance on surface 2 9C?cm:  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 4n4j=x]@  
    Change in Focus                :       0.000000                            0.000000 NJ>,'s  
    Tilt X tolerance on surface (degrees) 2 Zr9d&|$  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 $*i7?S@~-  
    Change in Focus                :       0.000000                            0.000000 cLHF9B5  
    Tilt Y tolerance on surface (degrees) 2 )8bFGX7|  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 /o\U/I  
    Change in Focus                :       0.000000                            0.000000 T(&kXMaB  
    Decenter X tolerance on surface 3 A~XOK;sB  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 C;%Y\S  
    Change in Focus                :       0.000000                            0.000000 1h{>[ 'L  
    Decenter Y tolerance on surface 3 >.n;mk  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 5<^'Cy  
    Change in Focus                :       0.000000                            0.000000 EM=xd~H  
    Tilt X tolerance on surface (degrees) 3 44Q9* ."  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 )]tvwEo  
    Change in Focus                :       0.000000                            0.000000 p}&Md-$1  
    Tilt Y tolerance on surface (degrees) 3 {GK(fBE  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 quY "  
    Change in Focus                :       0.000000                            0.000000 u8^Y,LN  
    Irregularity of surface 1 in fringes OH0S2?,{>  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 [jy0@Q9  
    Change in Focus                :       0.000000                            0.000000 =g >.X9lr  
    Irregularity of surface 2 in fringes ]79~:m[C  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 x'zihDOI  
    Change in Focus                :       0.000000                            0.000000 CJm.K  
    Irregularity of surface 3 in fringes / =-6:L  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 &0JK38(  
    Change in Focus                :       0.000000                            0.000000 v7L"`  
    Index tolerance on surface 1 ?Q;kZmQl  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 g;l'VA3v  
    Change in Focus                :       0.000000                            0.000000 MSK'2+1T@g  
    Index tolerance on surface 2 Q:pzL "bT  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 .#sz|0  
    Change in Focus                :       0.000000                           -0.000000 ,TEuM|  
    TR~|c|B  
    Worst offenders: epn#qeX  
    Type                      Value      Criterion        Change {s,^b|I2#U  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 amMjuyW  
    TSTY   2             0.20000000     0.35349910    -0.19053324 C1KfXC*|L  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 qw5&Y$((  
    TSTX   2             0.20000000     0.35349910    -0.19053324 "Wo.8  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 Y~:}l9Qs  
    TSTY   1             0.20000000     0.42678383    -0.11724851 OI*ZVD)J  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 KS b(R/T  
    TSTX   1             0.20000000     0.42678383    -0.11724851 <D~6v2$  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 gxI&f  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ;]{{)dst  
    | O57N'/  
    Estimated Performance Changes based upon Root-Sum-Square method: ;CA ?eI  
    Nominal MTF                 :     0.54403234 pF|8OB%  
    Estimated change            :    -0.36299231 qZXyi'(d  
    Estimated MTF               :     0.18104003 v#iFQVBq  
    $p jf#P8U  
    Compensator Statistics: {,i=>%X*  
    Change in back focus: K2*1T+?X  
    Minimum            :        -0.000000 Y 5Qb4Sa  
    Maximum            :         0.000000 a#^_"GX  
    Mean               :        -0.000000 D*CIE\+  
    Standard Deviation :         0.000000 o>0O@NE  
    >~h>#{&  
    Monte Carlo Analysis: 4pLQ"&>}80  
    Number of trials: 20 8n;kK?  
    ok%EqO  
    Initial Statistics: Normal Distribution Tku /OG'  
    anK[P'Y  
      Trial       Criterion        Change ]vRVo6@ k  
          1     0.42804416    -0.11598818 Lwp-2`%  
    Change in Focus                :      -0.400171 XI]OA7Zis  
          2     0.54384387    -0.00018847 v>rqOI  
    Change in Focus                :       1.018470 lr`?yn1D(  
          3     0.44510003    -0.09893230 be&6kG  
    Change in Focus                :      -0.601922 MhHr*!N"}  
          4     0.18154684    -0.36248550 CFD*g\g<*  
    Change in Focus                :       0.920681 iP2U]d~M  
          5     0.28665820    -0.25737414 |VTWw<{LX  
    Change in Focus                :       1.253875 I%pCm||p  
          6     0.21263372    -0.33139862 {`+bW"9  
    Change in Focus                :      -0.903878 W8Ke1( ws&  
          7     0.40051424    -0.14351809  yQ<6p3  
    Change in Focus                :      -1.354815 Bh\ [ CY  
          8     0.48754161    -0.05649072 d|>9rX+f  
    Change in Focus                :       0.215922 zA2UFax=  
          9     0.40357468    -0.14045766 #x, ]D  
    Change in Focus                :       0.281783 5OPS&:  
         10     0.26315315    -0.28087919 sXSj OUI  
    Change in Focus                :      -1.048393 pZc9q8j3  
         11     0.26120585    -0.28282649 2dv|6p  
    Change in Focus                :       1.017611 yonJd  
         12     0.24033815    -0.30369419  qJsQb  
    Change in Focus                :      -0.109292 bs:C1j\&  
         13     0.37164046    -0.17239188 <FXQxM5"  
    Change in Focus                :      -0.692430 FI3sLA  
         14     0.48597489    -0.05805744 }W- K  
    Change in Focus                :      -0.662040 \%w7D6dEZ  
         15     0.21462327    -0.32940907 j'G"ZPw1  
    Change in Focus                :       1.611296 db{NK wpj'  
         16     0.43378226    -0.11025008 cFRSd }p=  
    Change in Focus                :      -0.640081 6$W-?  
         17     0.39321881    -0.15081353 2Som0T<2  
    Change in Focus                :       0.914906 zb@L)%  
         18     0.20692530    -0.33710703 sqm%iyC=q  
    Change in Focus                :       0.801607 ^?H\*N4  
         19     0.51374068    -0.03029165 ] +}:VaeA  
    Change in Focus                :       0.947293 ],BJ}~v,X  
         20     0.38013374    -0.16389860 L~^e\^sP  
    Change in Focus                :       0.667010 o%kSR ]V|  
    C\;;9  
    Number of traceable Monte Carlo files generated: 20 _DNkdS [[  
    W)6U6  
    Nominal     0.54403234 [{6&.v  
    Best        0.54384387    Trial     2 PiIp<fJd$  
    Worst       0.18154684    Trial     4 NTv#{7q  
    Mean        0.35770970 d_4n0Kh0  
    Std Dev     0.11156454 t:?<0yfp&  
    9`LU=Xv/  
    8r7/IGFg  
    Compensator Statistics: f9h:"Dnzin  
    Change in back focus: )a4E&D  
    Minimum            :        -1.354815 G:E+s(x  
    Maximum            :         1.611296 ]=$-B  
    Mean               :         0.161872 9b{g+lMZo  
    Standard Deviation :         0.869664 #J%h!#3g  
    dg!1wD   
    90% >       0.20977951               X+(aQ >y  
    80% >       0.22748071               HB/ _O22  
    50% >       0.38667627               /u" cl2|  
    20% >       0.46553746               `^s]?  
    10% >       0.50064115                2:smt)f  
    !Szgph"ul  
    End of Run. x9XGCr  
    ~Mg8C9B?%3  
    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 @B>%B EC  
    Y\\3g_YBF  
    @O  @|M'  
    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 [)b/uR  
    "K4X:|Om"  
    不吝赐教
     
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    离线sansummer
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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?
    离线sansummer
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 i,U-H\p&  
    80% >       0.22748071                 !513rNO  
    50% >       0.38667627                 XQ|j5]  
    20% >       0.46553746                 4*ty&s=5OJ  
    10% >       0.50064115 w~FO:/  
    A%sxMA!K,  
    最后这个数值是MTF值呢,还是MTF的公差? &55uT;7] a  
    P[|B WNei  
    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???   BYA=M*f  
    A~~| X  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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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  : 0~I) /T  
    90% >       0.20977951                 !7Q.w/|=  
    80% >       0.22748071                 E52:c]<'m  
    50% >       0.38667627                 {>qrf:  
    20% >       0.46553746                 Q0cf]  
    10% >       0.50064115 6Yi,%#  
    ....... _rWXcK3cjr  
    =:T:9Y_i  
    ToCfLJ?{  
    这些数值都是MTF值
    离线天地大同
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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   ~wV98u-N  
    Mode                : Sensitivities D.JVEKLkU  
    Sampling            : 2 '<j p.sZQ  
    Nominal Criterion   : 0.54403234 B,qZwc|  
    Test Wavelength     : 0.6328 7 @Qlp$[F  
    }C1}T}U  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
    离线sansummer
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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? DxG'/5jQ[  
    xL#oP0d<e  
    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?
    离线天地大同
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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
    离线sansummer
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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?
    离线天地大同
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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