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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 Yc3\  
    %P#| }  
    =>A}eR1Y   
    9]tW;?  
    然后添加了默认公差分析，基本没变 >!o!rs  
    r4K%dx-t  
    ,5 3`t  
    $,I@c"m{  
    然后运行分析的结果如下： G'nSnw  
    uz=9L<$  
    Analysis of Tolerances $I ,Np)i  
    {%, 4P_m  
    File : E:\光学设计资料\zemax练习\f500.ZMX Jiru~Vo+  
    Title: @KZW*-"  
    Date : TUE JUN 21 2011 >:FmAey  
    ]f wW dtz1  
    Units are Millimeters. "tpD ->  
    All changes are computed using linear differences. X;vU z  
    7W&XcF  
    Paraxial Focus compensation only. ^HI2Vp  
    Gs04)KJm<  
    WARNING: Solves should be removed prior to tolerancing. ']OT7)_  
    :inVwc  
    Mnemonics: j[t2Bp  
    TFRN: Tolerance on curvature in fringes. @|'9nPern  
    TTHI: Tolerance on thickness. F)/4#[  
    TSDX: Tolerance on surface decentering in x. -ni@+Dy  
    TSDY: Tolerance on surface decentering in y. 9]/:B8k  
    TSTX: Tolerance on surface tilt in x (degrees). j``Ku@/x0  
    TSTY: Tolerance on surface tilt in y (degrees). QNXS.!\P  
    TIRR: Tolerance on irregularity (fringes). /&c>*4)  
    TIND: Tolerance on Nd index of refraction. X>]<rEh  
    TEDX: Tolerance on element decentering in x. .&>3nu  
    TEDY: Tolerance on element decentering in y. k%s,(2)30  
    TETX: Tolerance on element tilt in x (degrees). %Z*)<[cIE0  
    TETY: Tolerance on element tilt in y (degrees). " Z dI~  
    'S#^ 70kt  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. v9t'CMU  
    0+w(cf~6  
    WARNING: Boundary constraints on compensators will be ignored. E2S#REB4  
    V%zo[A  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm /Vx EqIK  
    Mode                : Sensitivities -`t9@1P> =  
    Sampling            : 2 MdTu722  
    Nominal Criterion   : 0.54403234 5fmQ+2A C1  
    Test Wavelength     : 0.6328 ,. <c|5R  
    aan(69=jz  
    PdRDUG{Jy  
    Fields: XY Symmetric Angle in degrees 7+6I~&x!Lz  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 5.kKg=a  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 YnCuF0>  
    "tA.`*  
    Sensitivity Analysis: 6G_{N.{(  
    <v\x<ul6  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ]/[@.   
    Type                      Value      Criterion        Change          Value      Criterion        Change z38Pi  
    Fringe tolerance on surface 1 Ch~y;C&e+r  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 2mO9  
    Change in Focus                :      -0.000000                            0.000000 Fa#5a'}I  
    Fringe tolerance on surface 2 'Q.5` o  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 byZj7q5&Q  
    Change in Focus                :       0.000000                            0.000000 ,E+\SBQS_  
    Fringe tolerance on surface 3 q)YHhH\  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 izu_KBzy  
    Change in Focus                :      -0.000000                            0.000000 !D/W6Ic@  
    Thickness tolerance on surface 1 b%VZPKA;  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 }me`(zp  
    Change in Focus                :       0.000000                            0.000000 f67pvyy -  
    Thickness tolerance on surface 2 /c7jL4oD  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 vsYbR3O  
    Change in Focus                :       0.000000                           -0.000000 9.6ni1a'  
    Decenter X tolerance on surfaces 1 through 3 d%p{l)Hd  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 9h6siK(F  
    Change in Focus                :       0.000000                            0.000000 /-=h|A#Kh  
    Decenter Y tolerance on surfaces 1 through 3 w`zS`+4  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 xBqZ: BQ  
    Change in Focus                :       0.000000                            0.000000 8Qkwg]X  
    Tilt X tolerance on surfaces 1 through 3 (degrees) )31xl6@  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 F C=N}5u  
    Change in Focus                :       0.000000                            0.000000 ,V;HM F.  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) :n?rk/F  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 z07:E>D]  
    Change in Focus                :       0.000000                            0.000000 (Q.I DDlr  
    Decenter X tolerance on surface 1  ]l  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 5 <7sVd.  
    Change in Focus                :       0.000000                            0.000000 %Bg>=C)^(1  
    Decenter Y tolerance on surface 1 S*WLb/R2  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 h +9~^<oFl  
    Change in Focus                :       0.000000                            0.000000 /In=u6D O  
    Tilt X tolerance on surface (degrees) 1 gaE8\JSr  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 #"[EVF0%1D  
    Change in Focus                :       0.000000                            0.000000 0}g~69Z1=  
    Tilt Y tolerance on surface (degrees) 1 pM*( kN  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 >h(GmR*xM  
    Change in Focus                :       0.000000                            0.000000 Xl>ZnI];  
    Decenter X tolerance on surface 2 t ^1uj:vD  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 "R% RI( y{  
    Change in Focus                :       0.000000                            0.000000 2=naPTP(  
    Decenter Y tolerance on surface 2 >.hDt9@4  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 FbW$H]C$  
    Change in Focus                :       0.000000                            0.000000 Xp fw2;`U'  
    Tilt X tolerance on surface (degrees) 2 TA~ZN^xI  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 )X8N|W>vh  
    Change in Focus                :       0.000000                            0.000000 t&_X{!1X"w  
    Tilt Y tolerance on surface (degrees) 2 x l=i_  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 0XA0 b1VX  
    Change in Focus                :       0.000000                            0.000000 `9|Uu#x  
    Decenter X tolerance on surface 3 ]?Q<lMG  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 K4OiKYq  
    Change in Focus                :       0.000000                            0.000000 j%8 1q  
    Decenter Y tolerance on surface 3 LQ||7>{eX  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 `9acR>00$  
    Change in Focus                :       0.000000                            0.000000 !=6\70lJ  
    Tilt X tolerance on surface (degrees) 3 +Y>oNX1KN  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ?5j~"  
    Change in Focus                :       0.000000                            0.000000 :_o^oi7G  
    Tilt Y tolerance on surface (degrees) 3 [Y^h)k{-$  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 .(yJ+NU  
    Change in Focus                :       0.000000                            0.000000 akWOE}5#  
    Irregularity of surface 1 in fringes NT9|``^Z  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 VWqZ`X  
    Change in Focus                :       0.000000                            0.000000 ?0lz!Nq'S  
    Irregularity of surface 2 in fringes Qr?1\H:Lq  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 qtFHA+bO  
    Change in Focus                :       0.000000                            0.000000 2_)gJ_kP  
    Irregularity of surface 3 in fringes 1 r3} V7  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 :kd]n$]  
    Change in Focus                :       0.000000                            0.000000 4Ujy_E?^  
    Index tolerance on surface 1 h]j>S  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 }?sC1]-j&  
    Change in Focus                :       0.000000                            0.000000 Uyd'uC  
    Index tolerance on surface 2 ;f)AM}~^Q  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 =RQI5 nHdw  
    Change in Focus                :       0.000000                           -0.000000 `X<a(5[vV3  
    `^h:} V  
    Worst offenders: Hk=HO|&<XB  
    Type                      Value      Criterion        Change 'UC1!Z  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 a TPq1u  
    TSTY   2             0.20000000     0.35349910    -0.19053324 -oB=7+g  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 er3`ITp:dp  
    TSTX   2             0.20000000     0.35349910    -0.19053324 NB-%Tp*d  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 z :u)@>6D1  
    TSTY   1             0.20000000     0.42678383    -0.11724851 J :KU~`r  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 h,,B"vPS  
    TSTX   1             0.20000000     0.42678383    -0.11724851 "|V}[ 2  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 s5)y %, E  
    TSTY   3             0.20000000     0.42861670    -0.11541563 f85~[3 J  
    jWdZ ]0m  
    Estimated Performance Changes based upon Root-Sum-Square method: >=.3Vydi1  
    Nominal MTF                 :     0.54403234 !-ZY_  
    Estimated change            :    -0.36299231 0;hn;(V]"  
    Estimated MTF               :     0.18104003 FOjX,@x&  
    nwIj?(8x  
    Compensator Statistics: mmy/YP)  
    Change in back focus: <-,y0Y'  
    Minimum            :        -0.000000 #qeC)T  
    Maximum            :         0.000000 U=5~]0g  
    Mean               :        -0.000000 Oz)/KZ  
    Standard Deviation :         0.000000 _/Ay$l;F  
    </aQ  
    Monte Carlo Analysis: ]EG8+K6  
    Number of trials: 20 7OS i2  
    }c>vk  
    Initial Statistics: Normal Distribution %P:|B:\<  
    ab]Q1kD  
      Trial       Criterion        Change \C4wWh-A  
          1     0.42804416    -0.11598818 m c{W\H  
    Change in Focus                :      -0.400171 z#GSt ZT  
          2     0.54384387    -0.00018847 .K`n;lVs  
    Change in Focus                :       1.018470 m;L 3c(r.  
          3     0.44510003    -0.09893230 W>: MK-_ J  
    Change in Focus                :      -0.601922 (!YJ:,!so  
          4     0.18154684    -0.36248550 =&(e*u_  
    Change in Focus                :       0.920681 1/K1e$r  
          5     0.28665820    -0.25737414 PWkSl  
    Change in Focus                :       1.253875 ( GoPXh  
          6     0.21263372    -0.33139862 ]'$:Y   
    Change in Focus                :      -0.903878 -)R =p"-w  
          7     0.40051424    -0.14351809 15yiDI o  
    Change in Focus                :      -1.354815 2b-g`60<  
          8     0.48754161    -0.05649072 S\!vDtD@  
    Change in Focus                :       0.215922 VN'\c3;  
          9     0.40357468    -0.14045766 KVUub'k  
    Change in Focus                :       0.281783 < RtyW  
         10     0.26315315    -0.28087919 YHMJ5IM@.  
    Change in Focus                :      -1.048393 {7;QZk(  
         11     0.26120585    -0.28282649 MU\Pggs  
    Change in Focus                :       1.017611 1kR. .p<"  
         12     0.24033815    -0.30369419 AWssDbh/[  
    Change in Focus                :      -0.109292 %s^1de  
         13     0.37164046    -0.17239188 ;zV<63tW  
    Change in Focus                :      -0.692430 oJ`=ob4WDo  
         14     0.48597489    -0.05805744 ^7Z;=]8J  
    Change in Focus                :      -0.662040 WNKg>$M  
         15     0.21462327    -0.32940907 H4j1yD(d  
    Change in Focus                :       1.611296 g,W34*7=Q  
         16     0.43378226    -0.11025008 Mc!LC .8  
    Change in Focus                :      -0.640081 5UG9&:zu'V  
         17     0.39321881    -0.15081353 q8FpJ\  
    Change in Focus                :       0.914906 rBy0hGx  
         18     0.20692530    -0.33710703 ~t ZB1+%)  
    Change in Focus                :       0.801607 "fUNrhCx  
         19     0.51374068    -0.03029165 6a_U[-a9;  
    Change in Focus                :       0.947293 MUGoW;}v )  
         20     0.38013374    -0.16389860 }[h]z7e2S  
    Change in Focus                :       0.667010 g1.u1}  
    lnLy"f"zV  
    Number of traceable Monte Carlo files generated: 20 99CK [G  
    FK`:eP{  
    Nominal     0.54403234 >Gk<a  
    Best        0.54384387    Trial     2 %[M0TE=J  
    Worst       0.18154684    Trial     4 0C  K  
    Mean        0.35770970 n&zEYCSI  
    Std Dev     0.11156454 S8v?H|rm  
    NffKK:HvBB  
    1i_%1Oip  
    Compensator Statistics: 5X>~39(r  
    Change in back focus: _Hfpizm  
    Minimum            :        -1.354815 Z @ef2y;  
    Maximum            :         1.611296 (n7{?`Yid  
    Mean               :         0.161872 |]k,0Y3v  
    Standard Deviation :         0.869664 xXa4t4gR  
    I,HtW),  
    90% >       0.20977951               V\opC6*L_e  
    80% >       0.22748071               !H{>c@i  
    50% >       0.38667627               Oh>hy Y)}  
    20% >       0.46553746               u86PTp+  
    10% >       0.50064115                aDxNAfP  
    uOy/c 8`  
    End of Run. <t*<SdAq>`  
    Cc,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 -.ZP<,?@F  
    z@pa;_  
    =5V7212  
    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 ?%Tx% dB  
    J YA>Q&  
    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                 jgG9?w)|u  
    80% >       0.22748071                 92A9gY  
    50% >       0.38667627                 knph549  
    20% >       0.46553746                 ~u2f`67{  
    10% >       0.50064115 alHA&YC{K  
    -T{2R:\{  
    最后这个数值是MTF值呢，还是MTF的公差？ j>:N0:  
    5;p|iT  
    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？？？   |3!)  
    Pmd[2/][  
    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  : %~Rg`+  
    90% >       0.20977951                 ,;w~ VZ4  
    80% >       0.22748071                 T:{r*zLSN  
    50% >       0.38667627                 #.HnO_sK_  
    20% >       0.46553746                 59l9_yFJ  
    10% >       0.50064115 tR'RB@kJ  
    ....... cRrJZ9  
    _1G/qHf^S  
    {._'Q[  
    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   `+\$  
    Mode                : Sensitivities [iq^'E  
    Sampling            : 2 ,Owk;MV@  
    Nominal Criterion   : 0.54403234 67Pmnad  
    Test Wavelength     : 0.6328 p+]S)K GZw  
    JnK<:]LcK  
    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？ # f-hI  
    0$Rn|yqf%  
    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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