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    [讨论]公差分析结果的疑问 [复制链接]

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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 `gqBJi  
    'MKkC(]4  
    <\x/Y$jm0n  
    R!xs;|]  
    然后添加了默认公差分析，基本没变 b:7;zOtF  
    \()\pp~4  
    ?8Cxt|o>  
    Kzxzz6R?  
    然后运行分析的结果如下： !lE (!d3M  
    ]+[ NX)=  
    Analysis of Tolerances  ,[ +  
    VL"ZC:n)-  
    File : E:\光学设计资料\zemax练习\f500.ZMX !m pRLBH  
    Title: wP1dPl_j:0  
    Date : TUE JUN 21 2011 9QJ=?bIC#  
    %iIryv;  
    Units are Millimeters. </<_e0  
    All changes are computed using linear differences. zsI0Q47\  
    I"3Qdi  
    Paraxial Focus compensation only. 7"=  
    HKP\`KBC j  
    WARNING: Solves should be removed prior to tolerancing. Js qze'BGY  
    /-4i"|  
    Mnemonics: O:q}<ljp  
    TFRN: Tolerance on curvature in fringes. ,KkENp_  
    TTHI: Tolerance on thickness. >8SX,  
    TSDX: Tolerance on surface decentering in x. [w~teX0!  
    TSDY: Tolerance on surface decentering in y. uW4G!Kw28  
    TSTX: Tolerance on surface tilt in x (degrees). HhNH"b&  
    TSTY: Tolerance on surface tilt in y (degrees). ezlp~z"_k  
    TIRR: Tolerance on irregularity (fringes). 5<4njo?k  
    TIND: Tolerance on Nd index of refraction. PiI ):B>  
    TEDX: Tolerance on element decentering in x. 'O]_A57  
    TEDY: Tolerance on element decentering in y. ,e>C)wq;  
    TETX: Tolerance on element tilt in x (degrees). 5gI@~h S  
    TETY: Tolerance on element tilt in y (degrees). EBw}/y{Kt  
    -'{ioHt&X/  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. .)})8csl.d  
    {^9,Dy_D  
    WARNING: Boundary constraints on compensators will be ignored. KBzEEvx/$  
    yqlkf$?  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm e@p` -;<  
    Mode                : Sensitivities \ ;Hj,z\  
    Sampling            : 2 +Qu~UK\   
    Nominal Criterion   : 0.54403234 jb)z[!FbM  
    Test Wavelength     : 0.6328 6,_CL M  
    3w {4G<I  
    8c+i+gp!  
    Fields: XY Symmetric Angle in degrees S3hJL:3c  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY nP'ab_>b  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 @)VJ,Ql$Y  
    ]S,I}NP  
    Sensitivity Analysis: ]9zc[_ !  
    n5S$Dl  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| z^~uq:  
    Type                      Value      Criterion        Change          Value      Criterion        Change {>QrI4*A  
    Fringe tolerance on surface 1 lqqY5l6j  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 QEUg=*3W=  
    Change in Focus                :      -0.000000                            0.000000 (' `) m  
    Fringe tolerance on surface 2 M0c"wi@S_  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 XPUH\I=  
    Change in Focus                :       0.000000                            0.000000 lDp5aT;DsM  
    Fringe tolerance on surface 3 XFYCPET  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ,n &|+&  
    Change in Focus                :      -0.000000                            0.000000 <6p{eGAQV  
    Thickness tolerance on surface 1 }M'\s  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 %~Nf,  
    Change in Focus                :       0.000000                            0.000000 "TtK!>!.  
    Thickness tolerance on surface 2 =h&DW5QC  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 n{Jvx>);  
    Change in Focus                :       0.000000                           -0.000000 o1zc`Ibd  
    Decenter X tolerance on surfaces 1 through 3 &xH>U*c  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 X,O&X  
    Change in Focus                :       0.000000                            0.000000 Vize0fsD  
    Decenter Y tolerance on surfaces 1 through 3 +t.T+` EG  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005  +tfmBZl^  
    Change in Focus                :       0.000000                            0.000000 ?\$77k  
    Tilt X tolerance on surfaces 1 through 3 (degrees) L=Dx$#|  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 aeSy, :  
    Change in Focus                :       0.000000                            0.000000 jGI!}4_  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) s_`wLQ7e  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 + 6r@HK`,t  
    Change in Focus                :       0.000000                            0.000000 EF)kYz!@  
    Decenter X tolerance on surface 1 6EX:qp^`  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 N@Slc 0  
    Change in Focus                :       0.000000                            0.000000 )4GfT  
    Decenter Y tolerance on surface 1 1Lj\"+.  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 T a/G  
    Change in Focus                :       0.000000                            0.000000 YqNhD6  
    Tilt X tolerance on surface (degrees) 1 Qg9{<0{u  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ~&B_ Bswf  
    Change in Focus                :       0.000000                            0.000000 webT  
    Tilt Y tolerance on surface (degrees) 1 A|RAMO@le  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 1`aFL5[0$  
    Change in Focus                :       0.000000                            0.000000 ml?+JbLg0  
    Decenter X tolerance on surface 2 9Eg'=YJ  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 8VMq>-  
    Change in Focus                :       0.000000                            0.000000 1RRvNZW  
    Decenter Y tolerance on surface 2 d9Rj-e1x  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 HLk}E*.mC  
    Change in Focus                :       0.000000                            0.000000 m} Yf6:cr  
    Tilt X tolerance on surface (degrees) 2 IHxX:a/iv  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 P.;B V",  
    Change in Focus                :       0.000000                            0.000000 )%,bog(x  
    Tilt Y tolerance on surface (degrees) 2 @ULr)&9  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 aN;L5;m#>{  
    Change in Focus                :       0.000000                            0.000000 Z8'uZ#=Yw  
    Decenter X tolerance on surface 3 o`RTvG Xk  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 dC,F?^  
    Change in Focus                :       0.000000                            0.000000 zI7-xqZ  
    Decenter Y tolerance on surface 3 *"9b?`E  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 b GwLfU  
    Change in Focus                :       0.000000                            0.000000 00b )Bg  
    Tilt X tolerance on surface (degrees) 3 .P,\69g~A  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 @*%.V.  
    Change in Focus                :       0.000000                            0.000000 `]tXQqD  
    Tilt Y tolerance on surface (degrees) 3 ,T&B.'cq  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 H.i_,ZF  
    Change in Focus                :       0.000000                            0.000000 Z71"d"  
    Irregularity of surface 1 in fringes I9>1WT<Yy  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Y/@4|9!  
    Change in Focus                :       0.000000                            0.000000 R_@yj]%H=  
    Irregularity of surface 2 in fringes <7TpC@"/g  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 M5%u>$2  
    Change in Focus                :       0.000000                            0.000000 :_Ng`b/  
    Irregularity of surface 3 in fringes "F%cn@l  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 G e~&Ble  
    Change in Focus                :       0.000000                            0.000000 [IV8  
    Index tolerance on surface 1 )}u.b-Nt.  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 vNJ!i\bX  
    Change in Focus                :       0.000000                            0.000000 `86 9XE  
    Index tolerance on surface 2 kTC6fNj[  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 GhpH7% s  
    Change in Focus                :       0.000000                           -0.000000 ]MB ^0:F-  
    :Z=A,G  
    Worst offenders: VnIJ$5Y  
    Type                      Value      Criterion        Change t5eux&C  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ~@sx}u  
    TSTY   2             0.20000000     0.35349910    -0.19053324 `7N[rs9|S  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 8Cm^#S,+  
    TSTX   2             0.20000000     0.35349910    -0.19053324 VK ?,8Y  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 })"9TfC  
    TSTY   1             0.20000000     0.42678383    -0.11724851 RqcX_x(p  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 @p `#y  
    TSTX   1             0.20000000     0.42678383    -0.11724851 fMLm_5(H  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 :&TOQ<vM  
    TSTY   3             0.20000000     0.42861670    -0.11541563 Sf*VkH  
    6Ajiz_~U  
    Estimated Performance Changes based upon Root-Sum-Square method: -?e~S\JH  
    Nominal MTF                 :     0.54403234 ^PWZ1.T  
    Estimated change            :    -0.36299231 o'D6lkf0  
    Estimated MTF               :     0.18104003 Wigm`A=,r  
    ADHe! [6q  
    Compensator Statistics: 9"<)DS  
    Change in back focus: -M[5K/[  
    Minimum            :        -0.000000 7i/?+|  
    Maximum            :         0.000000 = <33(   
    Mean               :        -0.000000 U15Hq*8Z  
    Standard Deviation :         0.000000 r}vI#;&  
    uO BpMAJ  
    Monte Carlo Analysis: YHeB <v  
    Number of trials: 20 KN+*_L-  
    {d7KJmN  
    Initial Statistics: Normal Distribution q+LjWZ+O  
    Em _miU  
      Trial       Criterion        Change ;%U`lE0  
          1     0.42804416    -0.11598818 qe\j$Cjy  
    Change in Focus                :      -0.400171 pGsVO5M?  
          2     0.54384387    -0.00018847 \ &_ -  
    Change in Focus                :       1.018470 ]A'e+RD4k  
          3     0.44510003    -0.09893230 ]CHMkuP[k  
    Change in Focus                :      -0.601922 |t.WPp5,  
          4     0.18154684    -0.36248550 Q$RP2&  
    Change in Focus                :       0.920681 +%>L;'L ^X  
          5     0.28665820    -0.25737414 rU'&o) a^  
    Change in Focus                :       1.253875 "pHQ  
          6     0.21263372    -0.33139862 Dy8Go4  
    Change in Focus                :      -0.903878 [& hdyLt  
          7     0.40051424    -0.14351809 JDMaLo  
    Change in Focus                :      -1.354815 'l<kY\I!%  
          8     0.48754161    -0.05649072 d5WE^H)E.  
    Change in Focus                :       0.215922 Vuz!~kLYIn  
          9     0.40357468    -0.14045766 Y @K9Hl  
    Change in Focus                :       0.281783 wBmbn=>#S  
         10     0.26315315    -0.28087919 )fCl<KG*  
    Change in Focus                :      -1.048393 :!aFfb["  
         11     0.26120585    -0.28282649 l sUQ7%f  
    Change in Focus                :       1.017611 DpTQPu9  
         12     0.24033815    -0.30369419 0jg-]  
    Change in Focus                :      -0.109292 K$K[fcj  
         13     0.37164046    -0.17239188 wV(_=LF  
    Change in Focus                :      -0.692430 a_Xh(d$  
         14     0.48597489    -0.05805744 {~d4;ht1Y  
    Change in Focus                :      -0.662040 Q2k\8i  
         15     0.21462327    -0.32940907 Xv'64Nc!;  
    Change in Focus                :       1.611296 qP]Gl--q{  
         16     0.43378226    -0.11025008 tU?lfU[7  
    Change in Focus                :      -0.640081 !X#=Pt[,  
         17     0.39321881    -0.15081353 +LX&1GX  
    Change in Focus                :       0.914906 LTJ|EXYA  
         18     0.20692530    -0.33710703 V:IoeQ]-  
    Change in Focus                :       0.801607 ,',fO?Qv'  
         19     0.51374068    -0.03029165 h3JIiwv0!  
    Change in Focus                :       0.947293 e4?}#6RF  
         20     0.38013374    -0.16389860 Lqz}h-Ei  
    Change in Focus                :       0.667010 XFM6.ye  
    %=NqxF>>  
    Number of traceable Monte Carlo files generated: 20 sg9ZYWcL  
    p%,JWZ[  
    Nominal     0.54403234 O0~[]3Y[=  
    Best        0.54384387    Trial     2 i@d!g"tot  
    Worst       0.18154684    Trial     4 KXR  
    Mean        0.35770970 ;,9|;)U?u  
    Std Dev     0.11156454 R':a,6 O  
    9fe~Q%x=u  
    WlG/7$  
    Compensator Statistics: !q$IB?8   
    Change in back focus: m~X:KwK4  
    Minimum            :        -1.354815 mEE/Olh W  
    Maximum            :         1.611296 d)q{s(<;  
    Mean               :         0.161872 hp[8.Z$7  
    Standard Deviation :         0.869664 7(wY4T  
    u6|7P<HUfb  
    90% >       0.20977951               ==|//:: \  
    80% >       0.22748071               <4Ujk8Zj  
    50% >       0.38667627               < v0 d8  
    20% >       0.46553746               i\,#Z!  
    10% >       0.50064115                5)EnOT"'  
    ~Uga=&  
    End of Run. ;i Ud3 '*  
    c)lMi}/  
    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 w' U;b  
    QDSB <0j  
    u,/PJg-(!  
    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 Z=wLNmH  
    +}*]9nG  
    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                 FRX'"gIR0  
    80% >       0.22748071                 ={8ClUV#  
    50% >       0.38667627                 QnVYZUgJeV  
    20% >       0.46553746                 M%yT?R+  
    10% >       0.50064115 -*+7-9A I  
    B!rY\ ?W  
    最后这个数值是MTF值呢，还是MTF的公差？ zjB8~ku#  
    1j3mTP  
    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？？？   :\gdQG  
    Tig`4d-%  
    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  : -}AAA*P  
    90% >       0.20977951                 wG ua"@IE  
    80% >       0.22748071                 DwMq  
    50% >       0.38667627                 -M/DOTc  
    20% >       0.46553746                 Oc}4`?oy<O  
    10% >       0.50064115 rB}Iwp8  
    ....... [D=ba=r0X  
    :&S6AP  
    I'Ui` :A  
    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   =]X_wA;%  
    Mode                : Sensitivities IH(]RHTp%  
    Sampling            : 2 ecfw[4B`  
    Nominal Criterion   : 0.54403234 C2OBgM+  
    Test Wavelength     : 0.6328 X0wvOs:  
    He @d~9M  
    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？ rWsUWA T*  
    >|Yr14?7  
    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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