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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 h<>yzr3fN  
     h 7l>(3  
    S-3hLw&?  
    D*PEIsV  
    然后添加了默认公差分析，基本没变 h~CLJoK<  
    > KdV]!H  
    F&7|`o3  
    Px*<-t|R-  
    然后运行分析的结果如下： rev*G:  
    |#SZd Xg  
    Analysis of Tolerances Y.tT#J^=  
    uPYH3<  
    File : E:\光学设计资料\zemax练习\f500.ZMX T*=*$%  
    Title: vp*+C kd  
    Date : TUE JUN 21 2011 R?9x!@BV  
    79d(UG'O  
    Units are Millimeters. 4*E5@{D  
    All changes are computed using linear differences. kQlwl9  
    g3{UP]Z71  
    Paraxial Focus compensation only. H|wP8uQC  
    H=f| X<8  
    WARNING: Solves should be removed prior to tolerancing. IPYwUix  
    YOrq)_ l  
    Mnemonics: '6>*J  
    TFRN: Tolerance on curvature in fringes. G-RDQ  
    TTHI: Tolerance on thickness. -MTYtw(  
    TSDX: Tolerance on surface decentering in x. U-m MKRV  
    TSDY: Tolerance on surface decentering in y. _!, J iOI  
    TSTX: Tolerance on surface tilt in x (degrees). LGZa l&9AY  
    TSTY: Tolerance on surface tilt in y (degrees). r;[=y<Yf  
    TIRR: Tolerance on irregularity (fringes). g|$;jQ\_  
    TIND: Tolerance on Nd index of refraction. ey4.Hj#T  
    TEDX: Tolerance on element decentering in x. Vr( Z;YO  
    TEDY: Tolerance on element decentering in y. {]dtA&8(  
    TETX: Tolerance on element tilt in x (degrees). PR$;*|@  
    TETY: Tolerance on element tilt in y (degrees). w=rD8 @  
    rvd%z7Z1o  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. cgQ6b.  
    VHl1f7%@H  
    WARNING: Boundary constraints on compensators will be ignored. iQ2j ejd3(  
    oo7}Hg>  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Dat',5  
    Mode                : Sensitivities ^w.]1x  
    Sampling            : 2 ]Zc|<f;  
    Nominal Criterion   : 0.54403234 6X m'^T  
    Test Wavelength     : 0.6328 !8cV."~  
    PRTjXq6)5  
    l$EN7^%w  
    Fields: XY Symmetric Angle in degrees <.gDg?'3  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY [?KGLUmTAI  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 "UNFB3  
    pb)8?1O|s  
    Sensitivity Analysis: SZHgXl3:  
    b"N!#&O]  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| MsP6C)dz  
    Type                      Value      Criterion        Change          Value      Criterion        Change 7>F{.\Z  
    Fringe tolerance on surface 1 q^EY?;Y  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 !%('8-x%  
    Change in Focus                :      -0.000000                            0.000000 6:Z8d%Z  
    Fringe tolerance on surface 2 A!x&,<  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 W [K.|8ho  
    Change in Focus                :       0.000000                            0.000000 +?m.uY(  
    Fringe tolerance on surface 3 OVe0{} j  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 u YT$$'S  
    Change in Focus                :      -0.000000                            0.000000 T+$H[ &j  
    Thickness tolerance on surface 1 TSsZzsdr2  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Em@:Qm EN  
    Change in Focus                :       0.000000                            0.000000 I_u/  
    Thickness tolerance on surface 2 Y6 sX|~Zy  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 #m{*]mY@  
    Change in Focus                :       0.000000                           -0.000000 HRDpFMA/~  
    Decenter X tolerance on surfaces 1 through 3 y3s+.5;  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 o1$u;}^|  
    Change in Focus                :       0.000000                            0.000000 &gY) x{  
    Decenter Y tolerance on surfaces 1 through 3 <c pck  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 e:9EP,  
    Change in Focus                :       0.000000                            0.000000 ~!r;?38V`  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ~RuX2u-2&u  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "Nj/{BU  
    Change in Focus                :       0.000000                            0.000000 Nq6'7'x  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) i!?gga  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 >{IPt]PCn  
    Change in Focus                :       0.000000                            0.000000 7 D#y  
    Decenter X tolerance on surface 1 !V37ePFje  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ?s^3 o{!<W  
    Change in Focus                :       0.000000                            0.000000 ][MtG  
    Decenter Y tolerance on surface 1 ?";SUku  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 4F~^RR"  
    Change in Focus                :       0.000000                            0.000000 ob{'Z]-V  
    Tilt X tolerance on surface (degrees) 1 D'#Q`H  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 #lLUBJ#:  
    Change in Focus                :       0.000000                            0.000000 UPfO;Z`hJ  
    Tilt Y tolerance on surface (degrees) 1 vv @m{,7#Y  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 -o6rY9\_!  
    Change in Focus                :       0.000000                            0.000000 8I#ir4z#<  
    Decenter X tolerance on surface 2 %7)=k}4  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 +&`W\?.~  
    Change in Focus                :       0.000000                            0.000000 &oS$<  
    Decenter Y tolerance on surface 2 NFs5XpZ~  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 +JU , ^A#X  
    Change in Focus                :       0.000000                            0.000000 '3(^Zv  
    Tilt X tolerance on surface (degrees) 2 ,JV0ib,  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 9RaO[j`  
    Change in Focus                :       0.000000                            0.000000 ^QRg9s,T<  
    Tilt Y tolerance on surface (degrees) 2 }6c>BU}DF  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 @dDeOnF  
    Change in Focus                :       0.000000                            0.000000 p?:5 U[KM  
    Decenter X tolerance on surface 3 YZBh}l6t  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 37/n"\4  
    Change in Focus                :       0.000000                            0.000000 WKEb '^  
    Decenter Y tolerance on surface 3 my.EvN  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ]yU"J:/  
    Change in Focus                :       0.000000                            0.000000 !LI<%P)  
    Tilt X tolerance on surface (degrees) 3 n~*".ZC'Y  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 8-#%l~dr  
    Change in Focus                :       0.000000                            0.000000 G21o @38e  
    Tilt Y tolerance on surface (degrees) 3  .w9LJ  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 HgF;[rq3Q  
    Change in Focus                :       0.000000                            0.000000 K T}  
    Irregularity of surface 1 in fringes JQ&t"`\k  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 #.bW9j/  
    Change in Focus                :       0.000000                            0.000000 9Yx(u 2PQ  
    Irregularity of surface 2 in fringes 7^q~a(j  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 L_8zZ8 o  
    Change in Focus                :       0.000000                            0.000000 _IDZ.\'>$  
    Irregularity of surface 3 in fringes 6Xlzdt  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 9t"Rw ns  
    Change in Focus                :       0.000000                            0.000000 V8?}I)#(7  
    Index tolerance on surface 1 NI >%v  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 RdTM5ANT  
    Change in Focus                :       0.000000                            0.000000 a:h<M^n049  
    Index tolerance on surface 2 S(Yd.Sp  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 _!\d?]Ya  
    Change in Focus                :       0.000000                           -0.000000 }rTH<! j  
    l90mM'[  
    Worst offenders: X W)TI  
    Type                      Value      Criterion        Change !~@GIr  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 qLN^9PdEE  
    TSTY   2             0.20000000     0.35349910    -0.19053324 %@/^UE:  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 m~ tvuz I  
    TSTX   2             0.20000000     0.35349910    -0.19053324 sHP -@  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ]A#lV$  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Sqo+cZ  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 -4a9BE".  
    TSTX   1             0.20000000     0.42678383    -0.11724851 BM%wZ: s  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 WNjwv/  
    TSTY   3             0.20000000     0.42861670    -0.11541563 157_0  
    ~GaGDS\V  
    Estimated Performance Changes based upon Root-Sum-Square method: ly[LF1t   
    Nominal MTF                 :     0.54403234 XpIiJry!6  
    Estimated change            :    -0.36299231 /Rp]"S vt  
    Estimated MTF               :     0.18104003 l>?c AB[  
    |?`5~f  
    Compensator Statistics: [4Z 31v>  
    Change in back focus: "/#JC} ]  
    Minimum            :        -0.000000 lfGyK4:  
    Maximum            :         0.000000 u2V-V#jS  
    Mean               :        -0.000000 mP(3[a_Q  
    Standard Deviation :         0.000000 w2 )Ro:G  
    qS!r<'F3dP  
    Monte Carlo Analysis: n/H OP  
    Number of trials: 20 5gszAvOO  
    :$5A3i  
    Initial Statistics: Normal Distribution GP|=4T}Bf  
    h~MV=7 lE  
      Trial       Criterion        Change ${+u-Wfau  
          1     0.42804416    -0.11598818 .1x04Np!  
    Change in Focus                :      -0.400171 ])x1MmRg\  
          2     0.54384387    -0.00018847 n\#YGL<n  
    Change in Focus                :       1.018470 THA9OXP  
          3     0.44510003    -0.09893230 !QUY (  
    Change in Focus                :      -0.601922 v0^9 "V:y  
          4     0.18154684    -0.36248550 &J[a.:..  
    Change in Focus                :       0.920681 #Ondhy%h[  
          5     0.28665820    -0.25737414 E_HB[ 9  
    Change in Focus                :       1.253875 E*_^+ %  
          6     0.21263372    -0.33139862 DT1gy:?L  
    Change in Focus                :      -0.903878 "cH RGJG#  
          7     0.40051424    -0.14351809 ]|;+2@kDR  
    Change in Focus                :      -1.354815 ) "#'   
          8     0.48754161    -0.05649072 "}]`64?  
    Change in Focus                :       0.215922 2EY"[xK|  
          9     0.40357468    -0.14045766 o9?@jjqH  
    Change in Focus                :       0.281783 ntiS7g e1  
         10     0.26315315    -0.28087919 $ |4C]Me (  
    Change in Focus                :      -1.048393  )vr@:PE  
         11     0.26120585    -0.28282649 <t%gl5}|  
    Change in Focus                :       1.017611 bm588UQ  
         12     0.24033815    -0.30369419 ;`9f<d#\  
    Change in Focus                :      -0.109292 ,!ZuH?Z  
         13     0.37164046    -0.17239188 R+sT &d  
    Change in Focus                :      -0.692430 ajbe7#}  
         14     0.48597489    -0.05805744 OfsP5*d  
    Change in Focus                :      -0.662040 ]m]`J|%i  
         15     0.21462327    -0.32940907 :fRXLe1=  
    Change in Focus                :       1.611296 fSh5u/F!  
         16     0.43378226    -0.11025008 JFq wC=-  
    Change in Focus                :      -0.640081 `h}eP[jA  
         17     0.39321881    -0.15081353 ? @V R%z  
    Change in Focus                :       0.914906 $o6/dEKQ  
         18     0.20692530    -0.33710703 Iw1Y?Qia  
    Change in Focus                :       0.801607 @WJ;T= L  
         19     0.51374068    -0.03029165 I8F+Z  
    Change in Focus                :       0.947293 NGra/s,9 |  
         20     0.38013374    -0.16389860 A'qe2]  
    Change in Focus                :       0.667010 yr]ja-Y  
    WxdQ^#AE  
    Number of traceable Monte Carlo files generated: 20 wak26W>I3  
    f *ZU a  
    Nominal     0.54403234 Pms@!yce  
    Best        0.54384387    Trial     2 SpH|<L3  
    Worst       0.18154684    Trial     4 tz1@s nes  
    Mean        0.35770970 fBO/0uW  
    Std Dev     0.11156454 P{L=u74b{x  
    L aTcBcI  
    c0Ug5Vr  
    Compensator Statistics: owVvbC2<b(  
    Change in back focus: \j)Evjw  
    Minimum            :        -1.354815 J )1   
    Maximum            :         1.611296 :,BAw ,  
    Mean               :         0.161872 D6SUzI1+H  
    Standard Deviation :         0.869664  CB7dr&>  
    3WV(Ok  
    90% >       0.20977951               5Z=4%P*I  
    80% >       0.22748071               nx9PNl@?V  
    50% >       0.38667627               :\T Mm>%q  
    20% >       0.46553746               Xj?Wvt  
    10% >       0.50064115                3)OZf{D[  
    3F9V,zWtTi  
    End of Run. D?|D)"?qb  
    ~G@NWF?7  
    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 pP\Cwo #,  
    jzvK;*N  
    ;i{B,!#  
    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 H7O~So*N5  
    P jQl(v&O  
    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                 o)Q4+njT@  
    80% >       0.22748071                 ]#~J[uk  
    50% >       0.38667627                 /Qgb t  
    20% >       0.46553746                 q 4BXrEOw  
    10% >       0.50064115 \F _1 C=  
    m:_#kfC&K"  
    最后这个数值是MTF值呢，还是MTF的公差？ s/1r{;q  
    3}L3n*Ft#.  
    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？？？   UMcM&yu-  
    a%q,P @8  
    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  : |@d(2f8  
    90% >       0.20977951                 [,bJKz)a  
    80% >       0.22748071                 a,rXG  
    50% >       0.38667627                 h`Jc%6o  
    20% >       0.46553746                 ' !huU   
    10% >       0.50064115 n6[shXH  
    ....... _Q:ot'(~0-  
    b$w66q8  
    )t~ad]oM  
    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   TaF*ZT2  
    Mode                : Sensitivities tL&_@PD)3  
    Sampling            : 2 -/3h&g  
    Nominal Criterion   : 0.54403234 nUY)Ln I  
    Test Wavelength     : 0.6328 E; yr46  
    ZyDf@(z`  
    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
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    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？ %jUZc:06  
    6o#J  
    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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