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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 y=GDuU%  
    M7DoAS{6e  
    1\jj3Y'i'  
    Lxa<zy~b  
    然后添加了默认公差分析，基本没变 Q{hK+z`D  
    j%!xb><  
    V2Z^W^  
    787i4h:71  
    然后运行分析的结果如下： `=TJw,q  
    @M*5q# s  
    Analysis of Tolerances Lz- (1~o  
    i .?l\  
    File : E:\光学设计资料\zemax练习\f500.ZMX ]xJ2;{JWsO  
    Title: yX\~ {%  
    Date : TUE JUN 21 2011 o`jVd,aj  
    &53LJlL Co  
    Units are Millimeters. #1>c)_H  
    All changes are computed using linear differences. $+ \JT/eG9  
    r-}C !aF]  
    Paraxial Focus compensation only. k1^&;}/f:  
    %tz foiJ%P  
    WARNING: Solves should be removed prior to tolerancing. %?`$#*f\%  
    d _Y7/_i  
    Mnemonics: r^"pLzAx  
    TFRN: Tolerance on curvature in fringes. DTV"~>@  
    TTHI: Tolerance on thickness. E7Pz~6  
    TSDX: Tolerance on surface decentering in x. = :\o/)+  
    TSDY: Tolerance on surface decentering in y. Pu]Pp`SP  
    TSTX: Tolerance on surface tilt in x (degrees). f,Dj@?3+  
    TSTY: Tolerance on surface tilt in y (degrees). GA)t!Xg^  
    TIRR: Tolerance on irregularity (fringes). ON3~!Q)  
    TIND: Tolerance on Nd index of refraction. xcl8q:  
    TEDX: Tolerance on element decentering in x. Oc?]L&ap  
    TEDY: Tolerance on element decentering in y. z)y{(gR  
    TETX: Tolerance on element tilt in x (degrees). 7%^ /Jm  
    TETY: Tolerance on element tilt in y (degrees). LZ*ZXFIg  
    U> 1voc  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. KP]{=~(  
    w57D qG>  
    WARNING: Boundary constraints on compensators will be ignored. f+W %X  
    5"9!kZ(<  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm iyf vcKO  
    Mode                : Sensitivities -eoXaP{[  
    Sampling            : 2 S6Fn(%T+9  
    Nominal Criterion   : 0.54403234 \B~}s}  
    Test Wavelength     : 0.6328 BO)Q$*G~JD  
    rOd~sa-H  
     - }9a%  
    Fields: XY Symmetric Angle in degrees [oh0 )wzB  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY #)N}F/Od^  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 jou741  
    (7_}UT@w-  
    Sensitivity Analysis: )4BLm  
    B)}.%G*  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 1iTI8h&[@  
    Type                      Value      Criterion        Change          Value      Criterion        Change %qqX-SF0C  
    Fringe tolerance on surface 1 RO+N>Wkt  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 X1PXX!]lo[  
    Change in Focus                :      -0.000000                            0.000000 I c 2R\}q  
    Fringe tolerance on surface 2 R+y 9JE  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 txp^3dZ`^  
    Change in Focus                :       0.000000                            0.000000 7 I`8r2H  
    Fringe tolerance on surface 3 Ri mz~}+  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 hiQ #<  
    Change in Focus                :      -0.000000                            0.000000 T>2_r6;  
    Thickness tolerance on surface 1 EAPjQA-B?  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 }5qpiS"V9  
    Change in Focus                :       0.000000                            0.000000 1rLK1X  
    Thickness tolerance on surface 2 -.=:@H}r  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 he\ pW5p  
    Change in Focus                :       0.000000                           -0.000000 cA8A^Iv:0  
    Decenter X tolerance on surfaces 1 through 3 8.m9 =+)8  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 P")1_!  
    Change in Focus                :       0.000000                            0.000000 -b`O"Ck*  
    Decenter Y tolerance on surfaces 1 through 3 =)mA.j}E2  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 *'ffMnSZ  
    Change in Focus                :       0.000000                            0.000000 :'0.  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ?)V?6"fFP  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 r&_bk Y%  
    Change in Focus                :       0.000000                            0.000000 J,Rp&tavt:  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) nc/F@HCB  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 FX,kmre3  
    Change in Focus                :       0.000000                            0.000000 AREpZ2GiU  
    Decenter X tolerance on surface 1 3 =-XA2zJ  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 %  db  
    Change in Focus                :       0.000000                            0.000000 >%1mx\y^  
    Decenter Y tolerance on surface 1 uP NZ^lM  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 *aaK_=w  
    Change in Focus                :       0.000000                            0.000000 Bb9/nsbE  
    Tilt X tolerance on surface (degrees) 1 4IGn,D^  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 +b_o2''  
    Change in Focus                :       0.000000                            0.000000 &Fy})/F3v  
    Tilt Y tolerance on surface (degrees) 1 O f.%rpgy  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 |kK_B :K  
    Change in Focus                :       0.000000                            0.000000  SodYb  
    Decenter X tolerance on surface 2 UR<a7j"@2  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ZZ2vdy38  
    Change in Focus                :       0.000000                            0.000000 =";G&)H-  
    Decenter Y tolerance on surface 2 ni~1)"U.  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 nXM[#~  
    Change in Focus                :       0.000000                            0.000000 B x-"<^<  
    Tilt X tolerance on surface (degrees) 2 HIsB)W&%@  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 %Fp 1c K  
    Change in Focus                :       0.000000                            0.000000 /ei(Q'pc[  
    Tilt Y tolerance on surface (degrees) 2 D*}_L   
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 [Ufx=BPx3  
    Change in Focus                :       0.000000                            0.000000 MHPh!  
    Decenter X tolerance on surface 3 wn/Y 5   
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 t~_bquGk  
    Change in Focus                :       0.000000                            0.000000 yt[*4gF4  
    Decenter Y tolerance on surface 3 L['g')g.  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 p-f"4vH  
    Change in Focus                :       0.000000                            0.000000 lQKq{WLFx.  
    Tilt X tolerance on surface (degrees) 3 w^E$R  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 'mYUAVmSC#  
    Change in Focus                :       0.000000                            0.000000 s`I]>e  
    Tilt Y tolerance on surface (degrees) 3 (-%1z_@Y  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 }NY! z^  
    Change in Focus                :       0.000000                            0.000000 ;D|g5$OE&  
    Irregularity of surface 1 in fringes f^|r*@o  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 '7JM/AcC#K  
    Change in Focus                :       0.000000                            0.000000 Wa<SYJ  
    Irregularity of surface 2 in fringes @&f~#Xe  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 `=P=i>,  
    Change in Focus                :       0.000000                            0.000000 "5@\"L  
    Irregularity of surface 3 in fringes EI8KKo *  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 IiM=Z=2  
    Change in Focus                :       0.000000                            0.000000 Qb#iT}!p%  
    Index tolerance on surface 1 tvcM< e20  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 _g%,/y 9y  
    Change in Focus                :       0.000000                            0.000000 j2s{rQQ  
    Index tolerance on surface 2  ?)2;W  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 +wGFJLHJ  
    Change in Focus                :       0.000000                           -0.000000 Y*0j/91  
    J[al4e^  
    Worst offenders: r1[#_A`Yn  
    Type                      Value      Criterion        Change k-I U}|Xz  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 hH_\C.bL  
    TSTY   2             0.20000000     0.35349910    -0.19053324 7Cx-yv  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 C&f{LpB`  
    TSTX   2             0.20000000     0.35349910    -0.19053324 2#X>^LH  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 B8>3GZi  
    TSTY   1             0.20000000     0.42678383    -0.11724851 V|)nU sU  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 VJS1{n=;k  
    TSTX   1             0.20000000     0.42678383    -0.11724851 8=-#LVo~c  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 l4AXjq2  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ]%Lk#BA@A  
    R'$1,ie  
    Estimated Performance Changes based upon Root-Sum-Square method: MCTTm^8O  
    Nominal MTF                 :     0.54403234 m%U$37A 1  
    Estimated change            :    -0.36299231 Erm]uI9`  
    Estimated MTF               :     0.18104003 q OV$4[r  
    q3ebps9^  
    Compensator Statistics: $fwj8S7$  
    Change in back focus: D<lVWP  
    Minimum            :        -0.000000 P.3kcZ   
    Maximum            :         0.000000 pt%Y1<9Eh?  
    Mean               :        -0.000000 OySn[4`(i  
    Standard Deviation :         0.000000 L RPdA "Z  
    (t"e#b(:  
    Monte Carlo Analysis: +oiuulA  
    Number of trials: 20 -;o0) DwZ  
    KP CZiu7  
    Initial Statistics: Normal Distribution i([|@Y=  
    7@Xi*Azd  
      Trial       Criterion        Change @!B% ynrG  
          1     0.42804416    -0.11598818 'h>CgR^NM1  
    Change in Focus                :      -0.400171 P]H4!}M  
          2     0.54384387    -0.00018847 jBJ|%K M  
    Change in Focus                :       1.018470 35Fs/Gf-n  
          3     0.44510003    -0.09893230 +m1*ou'K  
    Change in Focus                :      -0.601922 a>#]d  
          4     0.18154684    -0.36248550 G`z=qaj  
    Change in Focus                :       0.920681 &'c&B0j  
          5     0.28665820    -0.25737414 ),Igu  
    Change in Focus                :       1.253875 [N0"mE<  
          6     0.21263372    -0.33139862 moE!~IroG  
    Change in Focus                :      -0.903878 K5 Z'kkOk  
          7     0.40051424    -0.14351809 l:j>d^V*&x  
    Change in Focus                :      -1.354815 /;`-[   
          8     0.48754161    -0.05649072 ,Ofou8C6  
    Change in Focus                :       0.215922 34t[]v|LD  
          9     0.40357468    -0.14045766 =/bC0bb{i  
    Change in Focus                :       0.281783 @O HsM?nW  
         10     0.26315315    -0.28087919 s:^Xtox /  
    Change in Focus                :      -1.048393 J+YoAf`hi  
         11     0.26120585    -0.28282649 wcW}Sv[r  
    Change in Focus                :       1.017611 6IKi*}  
         12     0.24033815    -0.30369419 .}3K9.hkr  
    Change in Focus                :      -0.109292 V(OD^GU  
         13     0.37164046    -0.17239188 >H,PST  
    Change in Focus                :      -0.692430 TlJ'pG 4^  
         14     0.48597489    -0.05805744 r_3=+  
    Change in Focus                :      -0.662040 :@J.!dokF  
         15     0.21462327    -0.32940907 o_PQ]1  
    Change in Focus                :       1.611296 qIk( ei  
         16     0.43378226    -0.11025008 w s7LDY&(  
    Change in Focus                :      -0.640081 )<_:%oB  
         17     0.39321881    -0.15081353 g>-u9%aa  
    Change in Focus                :       0.914906 s^GE>rf  
         18     0.20692530    -0.33710703 xN44>3#  
    Change in Focus                :       0.801607 94L>%{59  
         19     0.51374068    -0.03029165 d? 4-"9Y  
    Change in Focus                :       0.947293 t#=FFQOt  
         20     0.38013374    -0.16389860 N|asr,  
    Change in Focus                :       0.667010 7DIFJJE'  
    \(ju0qFqH  
    Number of traceable Monte Carlo files generated: 20 AHn Yfxv_  
    }RZN3U=  
    Nominal     0.54403234 "sUmke-#  
    Best        0.54384387    Trial     2 6G<gA>V  
    Worst       0.18154684    Trial     4 |:5[`  
    Mean        0.35770970 Y$ '6p."=  
    Std Dev     0.11156454 >npFg@A  
    $WG<  
    _r vO#h  
    Compensator Statistics: KNqs=:i  
    Change in back focus: ]McDN[h:  
    Minimum            :        -1.354815 WXCZ }l  
    Maximum            :         1.611296 _:VIlg U  
    Mean               :         0.161872 7kh(WtUz  
    Standard Deviation :         0.869664 }Z8DVTpX}  
    ZUaqv  
    90% >       0.20977951               %lSjC%Z'd  
    80% >       0.22748071               rjL4t^rT  
    50% >       0.38667627               zfm#yDf  
    20% >       0.46553746               T#-U\C~o  
    10% >       0.50064115                %q_b\K  
    (sx,Ol  
    End of Run. K1m'20U  
    TV*@h2C"i  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 287)\FU;3  
    KN"<f:u  
    vlh$NK+F  
    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 Vv3:x1S  
    v}BXH4&Y  
    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                 ^]ig*oS\`  
    80% >       0.22748071                 t(:w):zE  
    50% >       0.38667627                 k`h#.B J  
    20% >       0.46553746                 !i5~>p|4@  
    10% >       0.50064115 ,WQg.neOA  
    oJe`]_XZ  
    最后这个数值是MTF值呢，还是MTF的公差？ p d(W(-`8!  
    QZv}\C-c  
    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？？？   y87oW_"h  
    P9jPdls  
    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  : `x_}mdR  
    90% >       0.20977951                 h'?v(k!  
    80% >       0.22748071                 xkv%4H>  
    50% >       0.38667627                 83 <CDjD  
    20% >       0.46553746                 HLOr Dlj7  
    10% >       0.50064115 U.X` z3q  
    ....... 7Mk>`4D'c  
    sO}CXItC+j  
    "YaT1` Kr  
    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   ;i\N!T{>  
    Mode                : Sensitivities L9N }lH  
    Sampling            : 2 $}{[_2  
    Nominal Criterion   : 0.54403234 y*ZA{  
    Test Wavelength     : 0.6328 AH:uG#  
    pS |K[:5  
    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？ ,|s*g'u  
    in/~' u  
    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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