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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 h}Lrpr2r  
    1AQy 8n*  
    [F 24xC+  
    Mb-AzGsV  
    然后添加了默认公差分析，基本没变 r! ~6.  
    * 'Bu-1{  
    .$o A~  
    Ll, U>yo  
    然后运行分析的结果如下： [DvQk?,t  
    MqRJ:x  
    Analysis of Tolerances /Ow@CB  
    eV j7%9  
    File : E:\光学设计资料\zemax练习\f500.ZMX KPA.5,ai  
    Title: a#a n+JY3  
    Date : TUE JUN 21 2011 $hy0U_}6  
    hGRHuJ  
    Units are Millimeters. K94bM5O 1  
    All changes are computed using linear differences. -6$GM J7  
    d6)+d9?<  
    Paraxial Focus compensation only. B_* Ayk  
    n?"("Fiw  
    WARNING: Solves should be removed prior to tolerancing. |)S*RQb\  
    yB|1?L#  
    Mnemonics: g]E3+:5dk  
    TFRN: Tolerance on curvature in fringes. A2SDEVU  
    TTHI: Tolerance on thickness. SGu`vN]  
    TSDX: Tolerance on surface decentering in x. }=|plz}  
    TSDY: Tolerance on surface decentering in y. nH B  
    TSTX: Tolerance on surface tilt in x (degrees). w-3Lw<  
    TSTY: Tolerance on surface tilt in y (degrees). sgRWjrc/  
    TIRR: Tolerance on irregularity (fringes). h4Xz"i{z  
    TIND: Tolerance on Nd index of refraction. 1u"#rC>7.4  
    TEDX: Tolerance on element decentering in x. ~_ u3_d.  
    TEDY: Tolerance on element decentering in y. jZ''0Lclpc  
    TETX: Tolerance on element tilt in x (degrees). !|8"}ZF  
    TETY: Tolerance on element tilt in y (degrees). IyAD>Q^  
    Mbn;~tY>  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. M0$E_*  
    U$ ;UW3-  
    WARNING: Boundary constraints on compensators will be ignored. t%StBq(q  
    dWdD^>8Ef  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm "28zLo3  
    Mode                : Sensitivities ;=WwJ Np~  
    Sampling            : 2 [&kz4_  
    Nominal Criterion   : 0.54403234 <GF^VT|Ce  
    Test Wavelength     : 0.6328 1iqgVby  
    6"; ITU^v  
    !(gSXe)*  
    Fields: XY Symmetric Angle in degrees yCN?kHG  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 'V &Tlw|  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 dsH*9t:z  
    5vJxhBm/  
    Sensitivity Analysis: ~/XDA:nfL:  
    3O;"{E= <  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| '.C#"nY>1  
    Type                      Value      Criterion        Change          Value      Criterion        Change J 5xMA-  
    Fringe tolerance on surface 1 2$v8{Y&  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 RC?vU  
    Change in Focus                :      -0.000000                            0.000000 ?a)Fm8Y  
    Fringe tolerance on surface 2 )j\_*SoH  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 J4@-?xj=\q  
    Change in Focus                :       0.000000                            0.000000 ;e< TEs  
    Fringe tolerance on surface 3 p$uPj*  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 }kP<zvAaw  
    Change in Focus                :      -0.000000                            0.000000 D c;k)z=  
    Thickness tolerance on surface 1 +bT[lJ2O>G  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 g@T}h[  
    Change in Focus                :       0.000000                            0.000000 (4Nj3x o  
    Thickness tolerance on surface 2 E^Q J50  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 yDWBrN._  
    Change in Focus                :       0.000000                           -0.000000 [A~ Hl  
    Decenter X tolerance on surfaces 1 through 3 vn!3Z!dm(  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 EiG5k.C@  
    Change in Focus                :       0.000000                            0.000000 t=9f:,I$  
    Decenter Y tolerance on surfaces 1 through 3 tY: Nq*@  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 \j5`6}zm  
    Change in Focus                :       0.000000                            0.000000 `- (<Q;iO  
    Tilt X tolerance on surfaces 1 through 3 (degrees) }r@yBUW  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 gS8+S\2  
    Change in Focus                :       0.000000                            0.000000 43]y]/do  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) (w:,iw#  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 #<Lv&-U<KT  
    Change in Focus                :       0.000000                            0.000000 <XQwu*_\  
    Decenter X tolerance on surface 1 )WInPW  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671  .FC+  
    Change in Focus                :       0.000000                            0.000000 Z4rk$K'=1w  
    Decenter Y tolerance on surface 1 *ra>Kl0   
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 A^#\=ZBg1  
    Change in Focus                :       0.000000                            0.000000 v/=\(  
    Tilt X tolerance on surface (degrees) 1 3W]gn8  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 0{ ~2mggh  
    Change in Focus                :       0.000000                            0.000000 L AH">E  
    Tilt Y tolerance on surface (degrees) 1 CWocb=E  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ZO/u3&gU  
    Change in Focus                :       0.000000                            0.000000 6`20  
    Decenter X tolerance on surface 2 iy_Y!wZ{  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 zBu@a:E%H  
    Change in Focus                :       0.000000                            0.000000 H7z)OaM  
    Decenter Y tolerance on surface 2 k!}(a0h  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ^+v1[U@  
    Change in Focus                :       0.000000                            0.000000 Z)2d4:uv  
    Tilt X tolerance on surface (degrees) 2 C=]<R< Xy  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 }z$_!)/i  
    Change in Focus                :       0.000000                            0.000000 x^EW'-a  
    Tilt Y tolerance on surface (degrees) 2 T&+3Xi:  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ! |UX4  
    Change in Focus                :       0.000000                            0.000000 {Dk!<w I)  
    Decenter X tolerance on surface 3 '^>} =f  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 goA=U  
    Change in Focus                :       0.000000                            0.000000 ft1#f@b.  
    Decenter Y tolerance on surface 3 h`dQ OH#  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 `lWGwFgg(  
    Change in Focus                :       0.000000                            0.000000 JJ%@m;~  
    Tilt X tolerance on surface (degrees) 3 0<a|=kZ  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ~!qnKM>[  
    Change in Focus                :       0.000000                            0.000000 s)`(@"{  
    Tilt Y tolerance on surface (degrees) 3 ()bQmNqmO=  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 [l3\0e6-/  
    Change in Focus                :       0.000000                            0.000000 5RFro^S9E  
    Irregularity of surface 1 in fringes , ?U)mYhI  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 {H)hoAenA  
    Change in Focus                :       0.000000                            0.000000 !%ju.Xs8  
    Irregularity of surface 2 in fringes EJ#I7_  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ]& ckq  
    Change in Focus                :       0.000000                            0.000000 mL2J  
    Irregularity of surface 3 in fringes rDhQ3iCqo  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 HbI{Xf[6LP  
    Change in Focus                :       0.000000                            0.000000 HI 1T  
    Index tolerance on surface 1 _,)_(R ,h  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 d"06 gp  
    Change in Focus                :       0.000000                            0.000000 wT\BA'VQ  
    Index tolerance on surface 2 tWTHyL  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 [n)ak)_/  
    Change in Focus                :       0.000000                           -0.000000 ]vvA]e  
    Eu'E;*- f  
    Worst offenders: b4-gNF]Yt  
    Type                      Value      Criterion        Change #e-K It  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 O- QT+]  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ?'+]d;UO&  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 R/Bjc}J'  
    TSTX   2             0.20000000     0.35349910    -0.19053324 &qG/\  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 T`":Q1n  
    TSTY   1             0.20000000     0.42678383    -0.11724851 F:T(-,  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 g:ky;-G8b  
    TSTX   1             0.20000000     0.42678383    -0.11724851 j \jMN*dmV  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 1F,U^O  
    TSTY   3             0.20000000     0.42861670    -0.11541563 c-(RjQ~M5  
    :_6o|9J\t  
    Estimated Performance Changes based upon Root-Sum-Square method: Os'E7;:1h  
    Nominal MTF                 :     0.54403234 iYgVSVNg  
    Estimated change            :    -0.36299231 cM'MgX9  
    Estimated MTF               :     0.18104003 hdx_Tduue  
    N=Ct3  
    Compensator Statistics: hS8M|_  
    Change in back focus: &uRT/+18W3  
    Minimum            :        -0.000000 JxtzI2  
    Maximum            :         0.000000 o #\L4P(J  
    Mean               :        -0.000000 +_J@8k  
    Standard Deviation :         0.000000 pI-Qq%Nwt  
    N^$q;%  
    Monte Carlo Analysis: v77UE"4|c  
    Number of trials: 20 yO7y`;Q(sF  
    "h_f- vP  
    Initial Statistics: Normal Distribution ]pBEoktp  
    GqL&hbpi  
      Trial       Criterion        Change >W] Wc4 \  
          1     0.42804416    -0.11598818 ~6kF`}5  
    Change in Focus                :      -0.400171 e8("G[P >  
          2     0.54384387    -0.00018847 PL&> p M  
    Change in Focus                :       1.018470 \Hrcf+`  
          3     0.44510003    -0.09893230 8(Te^] v#  
    Change in Focus                :      -0.601922 8|)!E`TKSV  
          4     0.18154684    -0.36248550 O U7OX]h  
    Change in Focus                :       0.920681 aC2Vz9e  
          5     0.28665820    -0.25737414 Z40k>t D  
    Change in Focus                :       1.253875 4)tY6ds)r|  
          6     0.21263372    -0.33139862 en'[_43  
    Change in Focus                :      -0.903878 KPO w  
          7     0.40051424    -0.14351809 _]o7iqtv  
    Change in Focus                :      -1.354815 ai$l7]7  
          8     0.48754161    -0.05649072 ?wG  
    Change in Focus                :       0.215922 {AD-p!6G  
          9     0.40357468    -0.14045766 X5/j8=G H`  
    Change in Focus                :       0.281783 V[kJ;YLPN  
         10     0.26315315    -0.28087919 - @>]iBl  
    Change in Focus                :      -1.048393 ;%2+Tc-7I  
         11     0.26120585    -0.28282649 g]L8Jli  
    Change in Focus                :       1.017611 *uRDB9#9,  
         12     0.24033815    -0.30369419 1gK^x^l*f  
    Change in Focus                :      -0.109292 5*Zz_ .  
         13     0.37164046    -0.17239188 'XKfKv >;  
    Change in Focus                :      -0.692430 WuY#Kx~2  
         14     0.48597489    -0.05805744 !Z2h ?..O  
    Change in Focus                :      -0.662040 ? bWc<]  
         15     0.21462327    -0.32940907 #Y7iJPO  
    Change in Focus                :       1.611296 h SS9mQ  
         16     0.43378226    -0.11025008 s3JzYDpy  
    Change in Focus                :      -0.640081 Fz(;Eo3  
         17     0.39321881    -0.15081353 ]I,&Bme  
    Change in Focus                :       0.914906 mv:@D  
         18     0.20692530    -0.33710703 VdM Ksx`r  
    Change in Focus                :       0.801607 bS8$[7OhX  
         19     0.51374068    -0.03029165 )?SFIQ=  
    Change in Focus                :       0.947293 qbq2Bi'a  
         20     0.38013374    -0.16389860 L@[}sMdq(  
    Change in Focus                :       0.667010 n^;-&  
    B"> Ko3  
    Number of traceable Monte Carlo files generated: 20 n]#YL4j  
    8BAe6-*S8  
    Nominal     0.54403234 >Um(gbG  
    Best        0.54384387    Trial     2 N<<wg{QO  
    Worst       0.18154684    Trial     4 <`SA >P  
    Mean        0.35770970 t'$_3ml  
    Std Dev     0.11156454 6)YckxN^  
    "" ^n^$  
    Szu @{lpP@  
    Compensator Statistics: 0AWxU?$A4  
    Change in back focus: N~v<8vJq`  
    Minimum            :        -1.354815 IxWi>8  
    Maximum            :         1.611296 tE-bHu370  
    Mean               :         0.161872 o<48'>[  
    Standard Deviation :         0.869664 .{t5_,P  
    .R` _"7  
    90% >       0.20977951               ck `td%  
    80% >       0.22748071               4>d]0=x  
    50% >       0.38667627               Cd^1E]O0{  
    20% >       0.46553746               3 +'vNc  
    10% >       0.50064115                qmn l  
    <Af&Q0J  
    End of Run. :dipk,b?n  
    4Hf'/%kW  
    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 Z"Lr5'}  
    P*;[&Nn4  
    VSUWX1k4%  
    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 |a7Kn/[`,  
    e`LvHU_0  
    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                 op-\|<i  
    80% >       0.22748071                 _@)-#7  
    50% >       0.38667627                 S~m8j |3K  
    20% >       0.46553746                 p/LV^TQ  
    10% >       0.50064115 ^XYK }J  
    Ke#Rkt  
    最后这个数值是MTF值呢，还是MTF的公差？ =_N $0  
    pIpdVKen  
    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？？？   EcytNYn  
    `l70i2xcj  
    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  : ^e $!19g  
    90% >       0.20977951                 2o1WXE %$  
    80% >       0.22748071                 v<(+ l)Ln  
    50% >       0.38667627                 nq+6ipx  
    20% >       0.46553746                 Z?&ZgaSz  
    10% >       0.50064115 p)m5|GH24  
    ....... MIiBNNURX  
    Z@*!0~NH=4  
    AG;KXL[V  
    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   d{B0a1P  
    Mode                : Sensitivities d6??OO=~>M  
    Sampling            : 2 tqpi{e  
    Nominal Criterion   : 0.54403234 ?s)6 YF  
    Test Wavelength     : 0.6328 v:9'k~4)  
    ^q%f~m,O<  
    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？ %@ q2  
    M[-/&;`f@  
    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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