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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 ZJoM?g~WFI  
    zLQx%Yg!  
    inL(X;@yo  
    ?ub35NLa  
    然后添加了默认公差分析，基本没变 WJi]t93  
    7V>M]  
    mFeP9MfJ  
    y_)FA"IkE  
    然后运行分析的结果如下： kJU2C=m@e2  
    %#+Hl0,Tt  
    Analysis of Tolerances +`4A$#$+y  
    WH\d| 1)  
    File : E:\光学设计资料\zemax练习\f500.ZMX +@UV?"d  
    Title: @Qe0! (_=  
    Date : TUE JUN 21 2011 }p V:M{Nu&  
    hH.G#-JO  
    Units are Millimeters. x`s>*^  
    All changes are computed using linear differences. }V>T M{  
    )b)zm2;  
    Paraxial Focus compensation only. c-w)|-ac.  
    #yen8SskB  
    WARNING: Solves should be removed prior to tolerancing. @EAbF>>  
    qs6aB0ln  
    Mnemonics: f$( e\+ +  
    TFRN: Tolerance on curvature in fringes. ]:;&1h3'7  
    TTHI: Tolerance on thickness. xw%0>K[  
    TSDX: Tolerance on surface decentering in x. kAx4fE[c  
    TSDY: Tolerance on surface decentering in y. al0L&z\  
    TSTX: Tolerance on surface tilt in x (degrees). -j(6;9"7]|  
    TSTY: Tolerance on surface tilt in y (degrees). `oJ [u:b  
    TIRR: Tolerance on irregularity (fringes). zs;JJk^  
    TIND: Tolerance on Nd index of refraction. ~[: 2I  
    TEDX: Tolerance on element decentering in x. k)u[0}   
    TEDY: Tolerance on element decentering in y. sLFl!jX  
    TETX: Tolerance on element tilt in x (degrees). Ac6=(B  
    TETY: Tolerance on element tilt in y (degrees). :Tc^y%b0  
    :&Nbw  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 9uY'E'm*  
    58K5ZZG  
    WARNING: Boundary constraints on compensators will be ignored. E^PB)D(.  
    Z)!C'cb  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm c> af  
    Mode                : Sensitivities 0x7'^Z>-oe  
    Sampling            : 2 e!`i3KYn"  
    Nominal Criterion   : 0.54403234 C~[,z.FvO  
    Test Wavelength     : 0.6328 [lAp62i5  
    g}i61(  
    R+|hw;  
    Fields: XY Symmetric Angle in degrees zi:BF60]=  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY neh(<>  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ;4a{$Lw~^9  
    mmsPLv6  
    Sensitivity Analysis: l2d{ 73h  
    MDN--p08  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| Q\)F;:|  
    Type                      Value      Criterion        Change          Value      Criterion        Change ,Q,^3*HX9}  
    Fringe tolerance on surface 1 *I'yH8Fcn  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 E4!Fupkpf  
    Change in Focus                :      -0.000000                            0.000000 Al'3?  
    Fringe tolerance on surface 2 P2!C|SLK  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ~ 1pr~  
    Change in Focus                :       0.000000                            0.000000 u>$t'  
    Fringe tolerance on surface 3 m* ;ERK  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 +V+a4lU14  
    Change in Focus                :      -0.000000                            0.000000 d3Rw!slIq  
    Thickness tolerance on surface 1 Fi1@MG5$2  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 *A< 5*Db:F  
    Change in Focus                :       0.000000                            0.000000 -8Xf0_  
    Thickness tolerance on surface 2 -N@|QK>  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 *H122njH+T  
    Change in Focus                :       0.000000                           -0.000000 h~26WLf.  
    Decenter X tolerance on surfaces 1 through 3 Wm|lSisY  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 t Pf40`@  
    Change in Focus                :       0.000000                            0.000000 r/sNrB1U"y  
    Decenter Y tolerance on surfaces 1 through 3 p7Cs.2>M>S  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 7KPwQ?SjT  
    Change in Focus                :       0.000000                            0.000000 -hV*EPQ/  
    Tilt X tolerance on surfaces 1 through 3 (degrees) .B yuN  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ca}2TT&t  
    Change in Focus                :       0.000000                            0.000000 .-=vx r  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) xpI wrJO  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 .o8t+X'G  
    Change in Focus                :       0.000000                            0.000000 +3`alHUK  
    Decenter X tolerance on surface 1 V:27)]q  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 4=.so~9odX  
    Change in Focus                :       0.000000                            0.000000 ExM,g'7  
    Decenter Y tolerance on surface 1 fatf*}eln  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 `kr?j:g  
    Change in Focus                :       0.000000                            0.000000 h$=2p5'-  
    Tilt X tolerance on surface (degrees) 1 i&k7-<  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 a6H%5N  
    Change in Focus                :       0.000000                            0.000000 - DCbko  
    Tilt Y tolerance on surface (degrees) 1 qVPeB,kIz  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 8D].MI^  
    Change in Focus                :       0.000000                            0.000000 V+~Nalm O  
    Decenter X tolerance on surface 2 5coZ|O&f8  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 0g\(+Qg^  
    Change in Focus                :       0.000000                            0.000000 v}(WaO#S  
    Decenter Y tolerance on surface 2 -![|}pX  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 f-2c0Bi  
    Change in Focus                :       0.000000                            0.000000 2JFpZU"1  
    Tilt X tolerance on surface (degrees) 2 *' X3z@R  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 PVOv[%  
    Change in Focus                :       0.000000                            0.000000 vFsLY  
    Tilt Y tolerance on surface (degrees) 2 4fzZ;2sl}  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 G\?YK.Y>  
    Change in Focus                :       0.000000                            0.000000 Fx+*S3==%e  
    Decenter X tolerance on surface 3 .~}1+\~5  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 j7c3(*Pl  
    Change in Focus                :       0.000000                            0.000000 X7 w Ky(g  
    Decenter Y tolerance on surface 3 d[35d J7F  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ;6 wA"  
    Change in Focus                :       0.000000                            0.000000 3,=6@U  
    Tilt X tolerance on surface (degrees) 3 NCx%L-GPi  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ]:f%l mEy  
    Change in Focus                :       0.000000                            0.000000 v}x&?fU `  
    Tilt Y tolerance on surface (degrees) 3 *#Wdc O `-  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 |I|fMF2K  
    Change in Focus                :       0.000000                            0.000000 d/Q%IeEL.  
    Irregularity of surface 1 in fringes yWya&|D9  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 F>cv<l =6l  
    Change in Focus                :       0.000000                            0.000000 X76e&~  
    Irregularity of surface 2 in fringes PT9*)9<L  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 HKr Mim-  
    Change in Focus                :       0.000000                            0.000000 @R  6@]Dm  
    Irregularity of surface 3 in fringes Lxk[;j+  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 e$pV%5=  
    Change in Focus                :       0.000000                            0.000000 X$pJ :M{F$  
    Index tolerance on surface 1 nLiY%x`S  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 V_:&S2j  
    Change in Focus                :       0.000000                            0.000000 J")#I91  
    Index tolerance on surface 2 4H-'Dr=G  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 X|8c>_}  
    Change in Focus                :       0.000000                           -0.000000 ##o#eZq:"  
    F\KUZ[%  
    Worst offenders: pD74+/DD  
    Type                      Value      Criterion        Change ]cN1c}  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 N"1B/u  
    TSTY   2             0.20000000     0.35349910    -0.19053324 B+0hzkPY  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 3Hm/(C  
    TSTX   2             0.20000000     0.35349910    -0.19053324 6_ow%Rx~F  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 !L8#@BjU  
    TSTY   1             0.20000000     0.42678383    -0.11724851 AFfAtu  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 5BJmA2L  
    TSTX   1             0.20000000     0.42678383    -0.11724851 i@ BtM9:  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 p6WX9\qS(  
    TSTY   3             0.20000000     0.42861670    -0.11541563 Ydy9  
    w'3iY,_ufC  
    Estimated Performance Changes based upon Root-Sum-Square method: 65m"J'  
    Nominal MTF                 :     0.54403234 BRYHX.}h\A  
    Estimated change            :    -0.36299231 \B 7tX  
    Estimated MTF               :     0.18104003 Y)a^(!<H<  
    Y]5 l.SV  
    Compensator Statistics: 1>&]R=  
    Change in back focus:  0{ [,E.  
    Minimum            :        -0.000000 lu6(C  
    Maximum            :         0.000000 F*K_+ ?m  
    Mean               :        -0.000000 Jdp3nzM^^@  
    Standard Deviation :         0.000000 Z*2Vpnqh\  
    &(mR> mT  
    Monte Carlo Analysis: aoa)BNs  
    Number of trials: 20 !#" zTj  
    T${Q.zHY[!  
    Initial Statistics: Normal Distribution @oad,=R&  
    V,?yPi$#E  
      Trial       Criterion        Change ED& `_h7?  
          1     0.42804416    -0.11598818 5Zva:  
    Change in Focus                :      -0.400171 uL/m u<  
          2     0.54384387    -0.00018847 gOOPe5+ J  
    Change in Focus                :       1.018470 5lT*hF  
          3     0.44510003    -0.09893230 D{~fDRR  
    Change in Focus                :      -0.601922 {& T_sw@[  
          4     0.18154684    -0.36248550 U~l$\ c  
    Change in Focus                :       0.920681 [R7Y}k:9U  
          5     0.28665820    -0.25737414 r{%qf;  
    Change in Focus                :       1.253875 M+9gL3W  
          6     0.21263372    -0.33139862 (DP &B%Sf  
    Change in Focus                :      -0.903878 Nl(3Xqov  
          7     0.40051424    -0.14351809 !1Cy$}w  
    Change in Focus                :      -1.354815 <nK?LcP  
          8     0.48754161    -0.05649072 W1FI mlXS  
    Change in Focus                :       0.215922 @[i4^  
          9     0.40357468    -0.14045766 ig':%2V/  
    Change in Focus                :       0.281783 we?76t:-  
         10     0.26315315    -0.28087919 =k:,qft2  
    Change in Focus                :      -1.048393 ^B 2 -)  
         11     0.26120585    -0.28282649 a"g!e^  
    Change in Focus                :       1.017611 _M5|Y@XN-  
         12     0.24033815    -0.30369419 ^Uh BH@ti  
    Change in Focus                :      -0.109292 k/gZ,  
         13     0.37164046    -0.17239188 Bv%GJ*>>  
    Change in Focus                :      -0.692430 \<6CZ  
         14     0.48597489    -0.05805744 3nnJ8zQ  
    Change in Focus                :      -0.662040 Y0K[Sm>  
         15     0.21462327    -0.32940907 'W,jMju  
    Change in Focus                :       1.611296 B\:%ufd ~  
         16     0.43378226    -0.11025008 Jl9k``r*  
    Change in Focus                :      -0.640081 ^J8lBLqe  
         17     0.39321881    -0.15081353 4u47D$=  
    Change in Focus                :       0.914906 :e%Pvk  
         18     0.20692530    -0.33710703 &&RimoIeo  
    Change in Focus                :       0.801607 f\>M'{cV  
         19     0.51374068    -0.03029165 =;&yd';k  
    Change in Focus                :       0.947293 M$8^91%4B  
         20     0.38013374    -0.16389860 6,9>g0y'NG  
    Change in Focus                :       0.667010 T+k{W6  
    a1y-3 z  
    Number of traceable Monte Carlo files generated: 20 FA3~|Zg  
    l.bYE/F0&  
    Nominal     0.54403234 s1=G;  
    Best        0.54384387    Trial     2 EeRX+BM,  
    Worst       0.18154684    Trial     4 YgV817OV  
    Mean        0.35770970 GMl;7?RA  
    Std Dev     0.11156454 .oUTqki  
    z}ddqZ27G$  
    zEyN)  
    Compensator Statistics: /& +tf*  
    Change in back focus: vV e';|8v  
    Minimum            :        -1.354815 s^uS1  
    Maximum            :         1.611296 25[I=ZdS  
    Mean               :         0.161872 sAD}#Zw$  
    Standard Deviation :         0.869664 j*jo@N |  
    ,lA  s  
    90% >       0.20977951               w{@o^rs  
    80% >       0.22748071               zZ323pq  
    50% >       0.38667627               6WJ)by  
    20% >       0.46553746               Z>Wg*sZy)  
    10% >       0.50064115                * 8_wYYH  
    Uu(SR/R}  
    End of Run. :Ab%g-  
    5VAK:eB  
    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 M={V|H0  
    GV69eG3bX#  
    'd$P`Vw:  
    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 c%G{#}^2  
    @A89eZbW  
    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                 WDPb!-VT  
    80% >       0.22748071                 O_ DtvjI'  
    50% >       0.38667627                 27"%"P.1  
    20% >       0.46553746                 e<h~o!z a  
    10% >       0.50064115 -[!P!d=  
    O 8u j`G 9  
    最后这个数值是MTF值呢，还是MTF的公差？ PuT@}tw  
    vbBc}G"w  
    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？？？   m~u5kbHOi=  
    r{ef.^&:  
    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  : hk;7:G  
    90% >       0.20977951                 ?6jkI2w  
    80% >       0.22748071                 ^:* 1d \  
    50% >       0.38667627                 (B-43!C  
    20% >       0.46553746                 15o?{=b[  
    10% >       0.50064115 Ox'/` Mppw  
    ....... ['*8IWg  
    70mpSD3  
    Vy,^)]  
    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   fH ?ha  
    Mode                : Sensitivities ~~,rp) )  
    Sampling            : 2 A4?+T+#d  
    Nominal Criterion   : 0.54403234 (?! ,p^  
    Test Wavelength     : 0.6328 zf>5,k'x'A  
    {; >Q.OX@  
    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？ V)i5=bHC  
    k') E/n  
    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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