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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 HI"!n$p  
    4 |:Q1  
    T+AlcOP  
    9#Aipu\  
    然后添加了默认公差分析，基本没变 ,<uiitOo  
    !1a|5 xrn  
    w8m8r`h  
    >gX0Ij#G  
    然后运行分析的结果如下： F:*[  
    RE`J"&  
    Analysis of Tolerances j61BP8E  
    }5o~R~H  
    File : E:\光学设计资料\zemax练习\f500.ZMX j=xtnIq  
    Title: lRF_ k  
    Date : TUE JUN 21 2011 -!C Y,'3  
    GvZac  
    Units are Millimeters. a'_MhJzs  
    All changes are computed using linear differences. 5`{|[J_[  
    9Sx<tj_4P{  
    Paraxial Focus compensation only. rj2r#{[  
    #q~3c;ec  
    WARNING: Solves should be removed prior to tolerancing. *O(/UVuD\  
    66^1&D"  
    Mnemonics: 1^x2WlUm4  
    TFRN: Tolerance on curvature in fringes. DJ mQZ+{2  
    TTHI: Tolerance on thickness. 5oT2)yz  
    TSDX: Tolerance on surface decentering in x. =E{{/%u{{S  
    TSDY: Tolerance on surface decentering in y. BDRYip[Sa  
    TSTX: Tolerance on surface tilt in x (degrees). |g?/~%7  
    TSTY: Tolerance on surface tilt in y (degrees). n3l"L|W^(<  
    TIRR: Tolerance on irregularity (fringes). <\}Y@g8  
    TIND: Tolerance on Nd index of refraction. 0TuOY%+  
    TEDX: Tolerance on element decentering in x. [5RFQ!  
    TEDY: Tolerance on element decentering in y. L5zG0mC8  
    TETX: Tolerance on element tilt in x (degrees). DSDl[;3O{s  
    TETY: Tolerance on element tilt in y (degrees). UALg!M#  
    fncwe ';?  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. d}wa[WRv   
    0XQ".:+h  
    WARNING: Boundary constraints on compensators will be ignored. r3c\;Ra7  
    r7Q:l ?F2  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm o/  x5  
    Mode                : Sensitivities A<YZBR_  
    Sampling            : 2 D)O6| DiO  
    Nominal Criterion   : 0.54403234 7/D9n9F  
    Test Wavelength     : 0.6328 SQ^^1.V&/Y  
    j?f,~Y<k  
    *&hXJJ[+  
    Fields: XY Symmetric Angle in degrees ^EuyvftZ  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY /8$1[[[  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 r_g\_y7ua  
    JR a*;_  
    Sensitivity Analysis: +9Hk+.  
    [KimY  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| I(?|Ox9"?  
    Type                      Value      Criterion        Change          Value      Criterion        Change XC$+ `?  
    Fringe tolerance on surface 1 0>~6Z  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 #>=/15:  
    Change in Focus                :      -0.000000                            0.000000 MOqA$b  
    Fringe tolerance on surface 2 M|Dwk3#  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 $^NWzc  
    Change in Focus                :       0.000000                            0.000000 AG$-U2ap  
    Fringe tolerance on surface 3 S\v&{  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 +4:+qGAJ{  
    Change in Focus                :      -0.000000                            0.000000 M[ ~2,M&H  
    Thickness tolerance on surface 1 'a-5 U TT  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 t0asW5f  
    Change in Focus                :       0.000000                            0.000000 <SC|A|  
    Thickness tolerance on surface 2 F'5d\v  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 7>2j=Y_Kp  
    Change in Focus                :       0.000000                           -0.000000 j3rv2W\  
    Decenter X tolerance on surfaces 1 through 3 ,a]~hNR*X  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 G%p!os\>  
    Change in Focus                :       0.000000                            0.000000 qh(-shZ4Du  
    Decenter Y tolerance on surfaces 1 through 3 e@2Vn? 5  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 T24#gF~  
    Change in Focus                :       0.000000                            0.000000 Za:BJ:  
    Tilt X tolerance on surfaces 1 through 3 (degrees) }%>$}4 ,  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314  +s R *d  
    Change in Focus                :       0.000000                            0.000000 >nIcF m  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) |Z7bd^  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 L$TKO,T  
    Change in Focus                :       0.000000                            0.000000 k,NU,^ &  
    Decenter X tolerance on surface 1 bZOy~F|  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 F&L?J_=  
    Change in Focus                :       0.000000                            0.000000 bJ,=yB+0  
    Decenter Y tolerance on surface 1 m"|(w`n]E+  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 S9"y@F <  
    Change in Focus                :       0.000000                            0.000000 ?;KJ (@Va  
    Tilt X tolerance on surface (degrees) 1 SVs~,  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Ay"2W%([`  
    Change in Focus                :       0.000000                            0.000000 <1g1hqK3  
    Tilt Y tolerance on surface (degrees) 1 #`#aSqGmc  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 kG;\i  
    Change in Focus                :       0.000000                            0.000000 J|2Hqd  
    Decenter X tolerance on surface 2 <j8&u/Za~'  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 G}dOx}kT  
    Change in Focus                :       0.000000                            0.000000 dI0>m:RBz  
    Decenter Y tolerance on surface 2 dT@SO  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Zz)oMw  
    Change in Focus                :       0.000000                            0.000000 In9|n^=H@  
    Tilt X tolerance on surface (degrees) 2 norc!?L  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Hj4w i|  
    Change in Focus                :       0.000000                            0.000000 x{`<);CQ  
    Tilt Y tolerance on surface (degrees) 2 nhX p_Z9  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 v!RB(T3  
    Change in Focus                :       0.000000                            0.000000 QWW7I.9r  
    Decenter X tolerance on surface 3 >/HU'  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 6 9I.*[  
    Change in Focus                :       0.000000                            0.000000 vkd<l&zD  
    Decenter Y tolerance on surface 3 pffw5Tc  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 5wFS.!xD  
    Change in Focus                :       0.000000                            0.000000 6$vh qg}f  
    Tilt X tolerance on surface (degrees) 3 z.9FDQLp  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 \PMKmJ X0O  
    Change in Focus                :       0.000000                            0.000000 Y %D*O  
    Tilt Y tolerance on surface (degrees) 3 K"6+X|yxE  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 h,6S$,UI  
    Change in Focus                :       0.000000                            0.000000 u*-<5& X  
    Irregularity of surface 1 in fringes Jgv>$u  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ~S=fMv^BR  
    Change in Focus                :       0.000000                            0.000000 m6Cd^'J9^  
    Irregularity of surface 2 in fringes |XdrO  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 & Dl'*|  
    Change in Focus                :       0.000000                            0.000000 cLko  
    Irregularity of surface 3 in fringes ^xNe Eb  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 er7/BE&  
    Change in Focus                :       0.000000                            0.000000 1> @|  
    Index tolerance on surface 1 k$x 'v#  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 "T1#*"{j  
    Change in Focus                :       0.000000                            0.000000 N9h@1'>  
    Index tolerance on surface 2 *Qwhi&k  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 8YLZ)k'  
    Change in Focus                :       0.000000                           -0.000000 aU8Ti8A>  
    8qYGlew,  
    Worst offenders: -0IFPL8  
    Type                      Value      Criterion        Change FjLv*K[#d  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 (kNTXhAr4  
    TSTY   2             0.20000000     0.35349910    -0.19053324 BaTOh'52  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 !2M[  
    TSTX   2             0.20000000     0.35349910    -0.19053324 GKx,6E#JM  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 7(USp#"  
    TSTY   1             0.20000000     0.42678383    -0.11724851 T0"0/{5-_  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 1;~1U9V  
    TSTX   1             0.20000000     0.42678383    -0.11724851 . .je<   
    TSTY   3            -0.20000000     0.42861670    -0.11541563 83,1d*`  
    TSTY   3             0.20000000     0.42861670    -0.11541563 iK:qPrk-  
    j72] _G  
    Estimated Performance Changes based upon Root-Sum-Square method: ="[](X^ l  
    Nominal MTF                 :     0.54403234 ne24QZ~}  
    Estimated change            :    -0.36299231 s!fY^3  
    Estimated MTF               :     0.18104003 +X(^Q@  
    {UC<I.5X  
    Compensator Statistics: 0i(?LI_S  
    Change in back focus: [T#a1!  
    Minimum            :        -0.000000  p6l@O3  
    Maximum            :         0.000000 s=Q*|  
    Mean               :        -0.000000 '2J6%Gg  
    Standard Deviation :         0.000000 U\ E{-7  
    (tLQX~Ur  
    Monte Carlo Analysis: i\4"FO?v  
    Number of trials: 20 V42*4hskL  
    eh/OCzWH  
    Initial Statistics: Normal Distribution Au*?)X- $  
    G$`4.,g  
      Trial       Criterion        Change JG4*B|3  
          1     0.42804416    -0.11598818 gN'i+mQcu  
    Change in Focus                :      -0.400171 GfPz^F=ie.  
          2     0.54384387    -0.00018847 (BQ3M-  
    Change in Focus                :       1.018470 $$f$$  
          3     0.44510003    -0.09893230 +9F#~{v`4a  
    Change in Focus                :      -0.601922 sP8&p*TJF  
          4     0.18154684    -0.36248550 ~@?-|xLqQ  
    Change in Focus                :       0.920681 TaO;r=2  
          5     0.28665820    -0.25737414 ZBq*<VtV  
    Change in Focus                :       1.253875 +Q]'kJ<s  
          6     0.21263372    -0.33139862 YaT+BRh?  
    Change in Focus                :      -0.903878 <$2zr4  
          7     0.40051424    -0.14351809 @,`=~_J  
    Change in Focus                :      -1.354815 w>BFgb?  
          8     0.48754161    -0.05649072 w*P4_= :%Y  
    Change in Focus                :       0.215922 Y4!q 1]TGX  
          9     0.40357468    -0.14045766 y1My, ?"?  
    Change in Focus                :       0.281783 NWN)b&}  
         10     0.26315315    -0.28087919 hg=G//  
    Change in Focus                :      -1.048393 =/!S  
         11     0.26120585    -0.28282649 {^MAdC_  
    Change in Focus                :       1.017611 |&'] ms5J  
         12     0.24033815    -0.30369419 &B0&183  
    Change in Focus                :      -0.109292 >d V@9  
         13     0.37164046    -0.17239188 Zw\V}uXI?  
    Change in Focus                :      -0.692430 5GL+j%7  
         14     0.48597489    -0.05805744 "UnSZ[;t  
    Change in Focus                :      -0.662040 +p<R'/  
         15     0.21462327    -0.32940907 HMd)64(  
    Change in Focus                :       1.611296 <7] Y\{+  
         16     0.43378226    -0.11025008 !TZ/PqcE  
    Change in Focus                :      -0.640081 wO)KQ~yX  
         17     0.39321881    -0.15081353 (jFE{M$-  
    Change in Focus                :       0.914906 o"M^ sKz47  
         18     0.20692530    -0.33710703 CHP6H}#|g  
    Change in Focus                :       0.801607 { (,vm}iFL  
         19     0.51374068    -0.03029165 |Z|xM  
    Change in Focus                :       0.947293 w=o m7%J@l  
         20     0.38013374    -0.16389860 x%ag.g2I  
    Change in Focus                :       0.667010 !Y(qpC:$  
    L([>yQZ  
    Number of traceable Monte Carlo files generated: 20 pAmI ](  
    e`1s[ ^B  
    Nominal     0.54403234 &7u Ra1/R  
    Best        0.54384387    Trial     2 bXLa~r4\  
    Worst       0.18154684    Trial     4 1)Bi>X  
    Mean        0.35770970 e-)1K  
    Std Dev     0.11156454 ;FflEL<7Y  
    ,#OG/r-H  
    v("vUqhx2+  
    Compensator Statistics: G{=$/&St  
    Change in back focus: F|{?GV%hF  
    Minimum            :        -1.354815 )p9n|C  
    Maximum            :         1.611296 08jQq#  
    Mean               :         0.161872 &uW.V+3  
    Standard Deviation :         0.869664 .cog9H'  
    }"H900WE|  
    90% >       0.20977951               &B7KWvAy  
    80% >       0.22748071               4\es@2q  
    50% >       0.38667627               O G}&%NgH  
    20% >       0.46553746               bA,D]  
    10% >       0.50064115                \>7-<7+I6  
    N6%q%7F.:  
    End of Run. bkIA:2HX  
    lf# six  
    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 |XG7UH  
    !,uw./8@Ku  
    0N_Da N  
    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 p:%E>K1<  
    wuQkeWxJ  
    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                 n\U6oJN  
    80% >       0.22748071                 OYy8u{@U:  
    50% >       0.38667627                 AWcP OU  
    20% >       0.46553746                 IRB;Q(Z   
    10% >       0.50064115 :Fl:bRH+  
    nr;/:[F  
    最后这个数值是MTF值呢，还是MTF的公差？ *L_wRhhk  
     >TgO|mq  
    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？？？   UqbE  
    u c8>B&B%  
    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  : _-^@Jx[  
    90% >       0.20977951                 zOcMc{w0   
    80% >       0.22748071                 X~x]VKr/  
    50% >       0.38667627                 WZ ZD  
    20% >       0.46553746                 SYyH_0N  
    10% >       0.50064115 v/)dsSNZ0u  
    ....... v{I:Wxe  
    b'G4KNW  
    A%Ao yy4E  
    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   <yeG0`}t  
    Mode                : Sensitivities K@h v[4  
    Sampling            : 2 9nB:=`T9  
    Nominal Criterion   : 0.54403234 z\v\T|C  
    Test Wavelength     : 0.6328 k38Ds_sW6d  
    X)Kd'6zg  
    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？ ~v2_vEu}JX  
    JGJQ5zt  
    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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