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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 a9]F.Jm  
    `Sgj!/! F  
    yw2Mr+9I  
    zGzeu)d  
    然后添加了默认公差分析，基本没变 wX5Yo{  
    < %@e<,8  
    cCx@VT`0  
    $cjwY$6  
    然后运行分析的结果如下： ;w>Dqem  
    zG-pqE6  
    Analysis of Tolerances & \tD$g~"  
    p+M#hF5o  
    File : E:\光学设计资料\zemax练习\f500.ZMX `o/G0~T)  
    Title: `W>cA64 o  
    Date : TUE JUN 21 2011 )45~YDS;t  
    ]nPfIBoS  
    Units are Millimeters. &U*MLf83`  
    All changes are computed using linear differences. <L'!EcHm%]  
    sNB*S{   
    Paraxial Focus compensation only. F{*{f =E!B  
    h,-2+}  
    WARNING: Solves should be removed prior to tolerancing. :&SvjJR  
    <14,xYpE  
    Mnemonics: ?R-4uG[(  
    TFRN: Tolerance on curvature in fringes. ~-2%^ovB  
    TTHI: Tolerance on thickness. D)shWJRlvW  
    TSDX: Tolerance on surface decentering in x. (<GBhNj=c  
    TSDY: Tolerance on surface decentering in y. 03N|@Tu  
    TSTX: Tolerance on surface tilt in x (degrees). p+x}$&<|  
    TSTY: Tolerance on surface tilt in y (degrees). p>M8:,  
    TIRR: Tolerance on irregularity (fringes). gn82_  
    TIND: Tolerance on Nd index of refraction. #h=pU/R  
    TEDX: Tolerance on element decentering in x. qmmQH S  
    TEDY: Tolerance on element decentering in y. L#huTKX}  
    TETX: Tolerance on element tilt in x (degrees). 78M%[7Cq<i  
    TETY: Tolerance on element tilt in y (degrees). {7d(B1[1  
    VT ikLuH  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. up_Qv#`Q  
    ZG(.Q:1  
    WARNING: Boundary constraints on compensators will be ignored. kPRG^Ox8e  
    d23;c )'  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm X|&v]mJ  
    Mode                : Sensitivities Y@(izC&h  
    Sampling            : 2 OQnb^fabY  
    Nominal Criterion   : 0.54403234 %"[`   
    Test Wavelength     : 0.6328 (#e,tu  
    ATRB9  
    'kuLkM,  
    Fields: XY Symmetric Angle in degrees r..&6-%:N  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY cG)U01/"  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 H8!; XB  
    <@.!\  
    Sensitivity Analysis: .gQYN2#zb  
    WRCf [5  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| DhVO}g)2#  
    Type                      Value      Criterion        Change          Value      Criterion        Change :,Zs {\oI3  
    Fringe tolerance on surface 1 z:1"d R   
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 } "QL"%  
    Change in Focus                :      -0.000000                            0.000000 )L+>^cJI<  
    Fringe tolerance on surface 2 R6cd;| fan  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 \Gl>$5np  
    Change in Focus                :       0.000000                            0.000000 ;9MIapfUd(  
    Fringe tolerance on surface 3 D[p_uDIz  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 zp'Vn7  
    Change in Focus                :      -0.000000                            0.000000 f|+aa6hN  
    Thickness tolerance on surface 1 +b sc3  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 E"<-To  
    Change in Focus                :       0.000000                            0.000000 2#81oz&K  
    Thickness tolerance on surface 2  u> @@  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 n@=D,'cn  
    Change in Focus                :       0.000000                           -0.000000 mYx6JU*`  
    Decenter X tolerance on surfaces 1 through 3 4e20\q_{  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 t) uS7y  
    Change in Focus                :       0.000000                            0.000000 d~abWBgC`  
    Decenter Y tolerance on surfaces 1 through 3 L#k`>Qn2  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 1j_ 6Sw(  
    Change in Focus                :       0.000000                            0.000000 ooA%/  
    Tilt X tolerance on surfaces 1 through 3 (degrees) P. Kfoos  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 yedEI[_4  
    Change in Focus                :       0.000000                            0.000000 S*l=FRFI  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) #O1%k;BL  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ThiM6Hb  
    Change in Focus                :       0.000000                            0.000000 2{|mL`$04<  
    Decenter X tolerance on surface 1 T9NTL\;  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 cI\&&<>SlG  
    Change in Focus                :       0.000000                            0.000000 >F5E^DY  
    Decenter Y tolerance on surface 1 jn]:*i;i  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 QTIC5cl,  
    Change in Focus                :       0.000000                            0.000000 { Ba_.]x  
    Tilt X tolerance on surface (degrees) 1 +.J/7 gD  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 O77^.B  
    Change in Focus                :       0.000000                            0.000000 1|WrJ-Uf  
    Tilt Y tolerance on surface (degrees) 1 g1{2E<b 5  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 E#n=aY~u-  
    Change in Focus                :       0.000000                            0.000000 N{&Hq4^c  
    Decenter X tolerance on surface 2 v*JXrB&x  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 yvCX is  
    Change in Focus                :       0.000000                            0.000000 K''2Jfm  
    Decenter Y tolerance on surface 2 QB5,Vfoux  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 g3| 62uDF  
    Change in Focus                :       0.000000                            0.000000 :h8-y&;  
    Tilt X tolerance on surface (degrees) 2 [:MFx6  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 *J3Z.fq%:i  
    Change in Focus                :       0.000000                            0.000000 /5Tp)h|  
    Tilt Y tolerance on surface (degrees) 2 8 3Tv-X  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 >@0U B@  
    Change in Focus                :       0.000000                            0.000000 kYZj^tR  
    Decenter X tolerance on surface 3 GK&R,q5}  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ~m3Tq.sYrY  
    Change in Focus                :       0.000000                            0.000000 T9?8@p\}(  
    Decenter Y tolerance on surface 3 4 3G2{  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 rqTsKrLe  
    Change in Focus                :       0.000000                            0.000000 T4Io+b8 $  
    Tilt X tolerance on surface (degrees) 3 b *Ca*!  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ?wVq5^ e  
    Change in Focus                :       0.000000                            0.000000 P?|>, \t  
    Tilt Y tolerance on surface (degrees) 3 }k0B   
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 %9OVw #P  
    Change in Focus                :       0.000000                            0.000000 ZC97Z sE  
    Irregularity of surface 1 in fringes *?~&O.R"  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 LMaY}m>  
    Change in Focus                :       0.000000                            0.000000 mvu$  
    Irregularity of surface 2 in fringes ~\OZEEI  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 (5GjtFojY|  
    Change in Focus                :       0.000000                            0.000000 3vj 1FbY  
    Irregularity of surface 3 in fringes ^WUG\@B  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 .R _-$/ZP  
    Change in Focus                :       0.000000                            0.000000 \# _w=gs<i  
    Index tolerance on surface 1 -r%k)4_  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 a{\<L/\  
    Change in Focus                :       0.000000                            0.000000 &~"e["gF=  
    Index tolerance on surface 2 <"Yx}5n.  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 $ S]l%  
    Change in Focus                :       0.000000                           -0.000000 3M"eAK([  
    FvVM}l'  
    Worst offenders: Xz!O}M{4  
    Type                      Value      Criterion        Change JgMYy,q8t  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 %b>Ee>rdD  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Su]p6B  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 bE1@RL  
    TSTX   2             0.20000000     0.35349910    -0.19053324 -d *je{c |  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 f,VJfY?#  
    TSTY   1             0.20000000     0.42678383    -0.11724851 /-Y.A<ieN8  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 zXGi  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ;v m$F251  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 4||dc}I"E  
    TSTY   3             0.20000000     0.42861670    -0.11541563 j7qGZ"8ak  
    Y))x'<T'Q  
    Estimated Performance Changes based upon Root-Sum-Square method: DS ^ `:^hv  
    Nominal MTF                 :     0.54403234 "]hQ\b\O  
    Estimated change            :    -0.36299231 lr9s`>9  
    Estimated MTF               :     0.18104003 #T08H,W/  
    fBnlB_}e  
    Compensator Statistics: lj 2OOU{  
    Change in back focus: Z`x*Igf8  
    Minimum            :        -0.000000 jd+ U+8r  
    Maximum            :         0.000000 f5,!,]XO  
    Mean               :        -0.000000 =-;J2Qlg6  
    Standard Deviation :         0.000000 C/YjMYwKgv  
    j'q Iq;y  
    Monte Carlo Analysis: }5=tUfh)]'  
    Number of trials: 20 h[oI/X  
    x%%OgO +>  
    Initial Statistics: Normal Distribution N _|tw  
    5^Ps(8VbS  
      Trial       Criterion        Change tB<|7  
          1     0.42804416    -0.11598818 Y(C-o[-N  
    Change in Focus                :      -0.400171 O_^;wey0}?  
          2     0.54384387    -0.00018847 !T~C=,;  
    Change in Focus                :       1.018470 oNp(GQ@0  
          3     0.44510003    -0.09893230 Mcqym8,q|3  
    Change in Focus                :      -0.601922 qx`)M3Mu|<  
          4     0.18154684    -0.36248550 LIfYpn6  
    Change in Focus                :       0.920681 kGW4kuh)/q  
          5     0.28665820    -0.25737414 T*rx5*:o  
    Change in Focus                :       1.253875 s]2_d|Y  
          6     0.21263372    -0.33139862 N.?)s.D(  
    Change in Focus                :      -0.903878 =v7%IRP5  
          7     0.40051424    -0.14351809 []hC*  
    Change in Focus                :      -1.354815 u9D#5NvGs  
          8     0.48754161    -0.05649072 ok(dCAKP  
    Change in Focus                :       0.215922 p>= b|Qy|  
          9     0.40357468    -0.14045766 xMHu:,ND  
    Change in Focus                :       0.281783 A3Oe=rB  
         10     0.26315315    -0.28087919 /s "Lsbe  
    Change in Focus                :      -1.048393 Q3 yW#eD  
         11     0.26120585    -0.28282649 >M^4p   
    Change in Focus                :       1.017611 */y (~O6  
         12     0.24033815    -0.30369419 1Y{pf]5Wx  
    Change in Focus                :      -0.109292 !+T29QYK8  
         13     0.37164046    -0.17239188 x#}{z1op9  
    Change in Focus                :      -0.692430  _!E)a  
         14     0.48597489    -0.05805744 Jq_AR!} %  
    Change in Focus                :      -0.662040 O^KIB%}fu  
         15     0.21462327    -0.32940907 A_2oQ*  
    Change in Focus                :       1.611296 mcq.*at  
         16     0.43378226    -0.11025008 c&I"&oZ@&  
    Change in Focus                :      -0.640081 UflS`  
         17     0.39321881    -0.15081353 UzT"Rb:e  
    Change in Focus                :       0.914906 6Ej.X)~'K  
         18     0.20692530    -0.33710703 }$Z0v`  
    Change in Focus                :       0.801607 Jo4iWJpK  
         19     0.51374068    -0.03029165 UHFI4{Wz  
    Change in Focus                :       0.947293 Z Z9D6+R  
         20     0.38013374    -0.16389860 @w73U; 9\  
    Change in Focus                :       0.667010 ` *q>E  
    oP_}C[  
    Number of traceable Monte Carlo files generated: 20 XxLauJP K  
    N^%7  
    Nominal     0.54403234 \JbOT%1  
    Best        0.54384387    Trial     2 4}Dfi5:   
    Worst       0.18154684    Trial     4 .^V9XN{'a  
    Mean        0.35770970 ]La~Bh6;m  
    Std Dev     0.11156454 JXq l=/%  
     giORc  
    9qI#vHA  
    Compensator Statistics: PdSYFJM  
    Change in back focus: ]?lUe5F  
    Minimum            :        -1.354815 !pxOhO.V  
    Maximum            :         1.611296 AI#.G7'O  
    Mean               :         0.161872 E~`l/ W  
    Standard Deviation :         0.869664 +jb<=ERV[  
    s5J?,xu  
    90% >       0.20977951               ].HHTCD`c  
    80% >       0.22748071               U5yBU9\G  
    50% >       0.38667627               E-Y4TBZ*  
    20% >       0.46553746               >b2wFo/em  
    10% >       0.50064115                ^0HgE;4  
    !yD$fY  
    End of Run. `&URd&ouJD  
    ^=[b]*V  
    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 /Suh&qw>  
    'q\[aKEX=  
    og`K! d~  
    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 HwZ"l31  
    NM+ (ss'  
    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                 4 }NCdGD  
    80% >       0.22748071                 ;s?,QvE{r#  
    50% >       0.38667627                 PO*0jO;%  
    20% >       0.46553746                 `\yQn7 Oq  
    10% >       0.50064115 RMlx[nsq  
    .*&F  
    最后这个数值是MTF值呢，还是MTF的公差？ La$?/\Dv)  
    LoW}!,|  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   t8.^YTI  
    ny1Dg$u i2  
    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  : ])?[9c  
    90% >       0.20977951                 j-wKm_M#jX  
    80% >       0.22748071                 3-BC4y/  
    50% >       0.38667627                 o@ @|4 F  
    20% >       0.46553746                 9JO1O:W  
    10% >       0.50064115 t c{Qd&"(  
    ....... eg"A?S  
    FY pspv?4  
    ?;ZnD(4?  
    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   dw%g9DT  
    Mode                : Sensitivities u24XuSe$  
    Sampling            : 2 3e1%G#fu  
    Nominal Criterion   : 0.54403234 w@H@[x  
    Test Wavelength     : 0.6328 6uxF<  
    f{h2>nEj \  
    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？ r|y\FL  
    dRUmC H  
    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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