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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 `dpm{s n  
    Co%EJb"tk  
    N-Jp; D  
    }-8ZSWog6f  
    然后添加了默认公差分析，基本没变 P!*G"^0<  
    ^<"^}Jh.M  
    ',g'Tl^E  
    A['0~tOP  
    然后运行分析的结果如下： NZh\{!  
    7yDWcm_y  
    Analysis of Tolerances c&rS7%  
    lMN3;}K  
    File : E:\光学设计资料\zemax练习\f500.ZMX = "N?v-  
    Title: c|,6(4j>$  
    Date : TUE JUN 21 2011 OU /=wpt  
    @9X+ BdQU  
    Units are Millimeters. @|hn@!YK  
    All changes are computed using linear differences. FWJhi$\:D]  
    "N\tR[P!  
    Paraxial Focus compensation only. |@Mx? (  
    ivb?B,Lz0  
    WARNING: Solves should be removed prior to tolerancing. Qe6'W  
    F#S )))#  
    Mnemonics: (aQNe{D#  
    TFRN: Tolerance on curvature in fringes. Qv`Lc]'  
    TTHI: Tolerance on thickness. &P,z$H{o@  
    TSDX: Tolerance on surface decentering in x. Dno'-{-  
    TSDY: Tolerance on surface decentering in y. ET[vJnReC  
    TSTX: Tolerance on surface tilt in x (degrees). ^jiYcg@_[  
    TSTY: Tolerance on surface tilt in y (degrees). ]?$e Bbt  
    TIRR: Tolerance on irregularity (fringes). dhAkD-Lh  
    TIND: Tolerance on Nd index of refraction. [Jjb<6[o  
    TEDX: Tolerance on element decentering in x. HLYTt)f}  
    TEDY: Tolerance on element decentering in y. OlwORtWzZ  
    TETX: Tolerance on element tilt in x (degrees). |'R^\M Q  
    TETY: Tolerance on element tilt in y (degrees). (*CGZDg  
    ?8O %k<?  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. (Q/Kp*a  
    ^G~C#t^  
    WARNING: Boundary constraints on compensators will be ignored. C72!::o  
    s,*kWy"jp  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 0OrT{jo  
    Mode                : Sensitivities 5,,b>Z<  
    Sampling            : 2 8>KBh)q  
    Nominal Criterion   : 0.54403234 {f9jK@%Gy  
    Test Wavelength     : 0.6328 G+$A|'<`z  
    R;{y]1u  
    U~)i&":sN  
    Fields: XY Symmetric Angle in degrees q|N/vkqPz  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY L,<5l?u  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 P`$"B0B)  
    @0 mR_\u\  
    Sensitivity Analysis: zv%9?:  
    Jn/"(mM  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| uoIvFcb^  
    Type                      Value      Criterion        Change          Value      Criterion        Change x^J}]5{0  
    Fringe tolerance on surface 1 -S7y1 )7  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 e_6-+l!f  
    Change in Focus                :      -0.000000                            0.000000 mg)ZoC  
    Fringe tolerance on surface 2 Xaca=tsO  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 D@]*{WO  
    Change in Focus                :       0.000000                            0.000000 ,vnHEY&  
    Fringe tolerance on surface 3 !RJuH;8  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Gh:hfHiG  
    Change in Focus                :      -0.000000                            0.000000 64hl0'67y  
    Thickness tolerance on surface 1 uzA_Zjx  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 #RG/B2  
    Change in Focus                :       0.000000                            0.000000 '^!1AGF  
    Thickness tolerance on surface 2 E[Rd= /P6  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 O$2'$44HX  
    Change in Focus                :       0.000000                           -0.000000 9MmAoLm  
    Decenter X tolerance on surfaces 1 through 3 X;hV+| Bo  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 F_?aoP&5  
    Change in Focus                :       0.000000                            0.000000 J'%  
    Decenter Y tolerance on surfaces 1 through 3 Jp0*Y-*Y  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 _2wU(XYH  
    Change in Focus                :       0.000000                            0.000000 -S ASn  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 2[#7YWs  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 k6p Xc<]8  
    Change in Focus                :       0.000000                            0.000000 yd-r7iq  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ks=l Nz9  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Q|O! cEW/  
    Change in Focus                :       0.000000                            0.000000 y7s:Buyc  
    Decenter X tolerance on surface 1 ^D{!!)O  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 D(m2^\O[  
    Change in Focus                :       0.000000                            0.000000 <ah!!  
    Decenter Y tolerance on surface 1 RO]Vn]qb  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 2}ttC m  
    Change in Focus                :       0.000000                            0.000000 xw)$).yc  
    Tilt X tolerance on surface (degrees) 1 5$(qnOi  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 [|XMR=\>  
    Change in Focus                :       0.000000                            0.000000 (}E ] g  
    Tilt Y tolerance on surface (degrees) 1 jmDQKqEc|l  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 tY1M7B^~  
    Change in Focus                :       0.000000                            0.000000 k4:e0Wd  
    Decenter X tolerance on surface 2 e)Be*J]4  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 >AbgJ*X.  
    Change in Focus                :       0.000000                            0.000000 &<s[(w!%%  
    Decenter Y tolerance on surface 2 @F+zME   
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Spnshv8  
    Change in Focus                :       0.000000                            0.000000 bpQ5B'9  
    Tilt X tolerance on surface (degrees) 2 `<0{U]m  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 0E6tH& ;>  
    Change in Focus                :       0.000000                            0.000000 ,<pk&54.@'  
    Tilt Y tolerance on surface (degrees) 2 3XCePA5z  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 /!V) 2j,  
    Change in Focus                :       0.000000                            0.000000 H\zV/1~Y  
    Decenter X tolerance on surface 3 -*Voui  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 zNu>25/)(  
    Change in Focus                :       0.000000                            0.000000 GkhaB(btk'  
    Decenter Y tolerance on surface 3 vy <(1\  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 JDQ7  
    Change in Focus                :       0.000000                            0.000000 3rF=u:r7c  
    Tilt X tolerance on surface (degrees) 3 aSKLSl't`  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 : J3_g<@  
    Change in Focus                :       0.000000                            0.000000 9K9{$jN~  
    Tilt Y tolerance on surface (degrees) 3 3C+!Y#F  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 tSP)'N<  
    Change in Focus                :       0.000000                            0.000000 hzT,0<nw  
    Irregularity of surface 1 in fringes <"93  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 f.Uvf^T}2  
    Change in Focus                :       0.000000                            0.000000 r+4<Lon~  
    Irregularity of surface 2 in fringes $P9'"a)Lm  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 5#DtaVz  
    Change in Focus                :       0.000000                            0.000000 XM9}ax  
    Irregularity of surface 3 in fringes w:|BQ,  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 J6WyFtlyLc  
    Change in Focus                :       0.000000                            0.000000 r#% e$  
    Index tolerance on surface 1 p~n62(  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 zlUXp0W  
    Change in Focus                :       0.000000                            0.000000 )L)jvCw,e  
    Index tolerance on surface 2 {Qe 7/ln!  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 -3z$~ {  
    Change in Focus                :       0.000000                           -0.000000 pj~Ao+  
    cc*xHv^  
    Worst offenders: J%Cn  
    Type                      Value      Criterion        Change `t@Rh~B  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 s+EJXox w  
    TSTY   2             0.20000000     0.35349910    -0.19053324 :`pgdn  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 8lI'[Y?3.  
    TSTX   2             0.20000000     0.35349910    -0.19053324 jD`p;#~8  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 "kS(b4^  
    TSTY   1             0.20000000     0.42678383    -0.11724851 $CgJ+ua\8  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 $Ur-Q d  
    TSTX   1             0.20000000     0.42678383    -0.11724851 NZP>aV-  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 'aW}&!H M  
    TSTY   3             0.20000000     0.42861670    -0.11541563 4axc05  
    h#Z5vH  
    Estimated Performance Changes based upon Root-Sum-Square method: ?hz9]I/8  
    Nominal MTF                 :     0.54403234 P?.j wI  
    Estimated change            :    -0.36299231 *0*1.>Vg  
    Estimated MTF               :     0.18104003 )L,.K O  
    [m}58?0~x  
    Compensator Statistics: c{qoASc?  
    Change in back focus: Xy0KZ !  
    Minimum            :        -0.000000 M%\=Fb  
    Maximum            :         0.000000 /3(|P  
    Mean               :        -0.000000 L\CufAN  
    Standard Deviation :         0.000000 m(CbMu  
    3I" <\M4x  
    Monte Carlo Analysis: 6r|BiHP  
    Number of trials: 20 Y$@?Y/rhR  
    xu]>TC1  
    Initial Statistics: Normal Distribution |i}5vT78  
    Zx1I&K\Cd  
      Trial       Criterion        Change q h+c}"4m  
          1     0.42804416    -0.11598818 qoifzEc`U  
    Change in Focus                :      -0.400171 ,h#U<CnP#  
          2     0.54384387    -0.00018847 ^GyGh{@,f  
    Change in Focus                :       1.018470 C6!P8qX  
          3     0.44510003    -0.09893230 T%opkyP>=  
    Change in Focus                :      -0.601922 b8>2Y'X  
          4     0.18154684    -0.36248550 5bfd8C  
    Change in Focus                :       0.920681 n#NE.ap$&,  
          5     0.28665820    -0.25737414 r8k.I4  
    Change in Focus                :       1.253875 ]+OHxCj:  
          6     0.21263372    -0.33139862 snl$v  
    Change in Focus                :      -0.903878  Uu<Tn#nb  
          7     0.40051424    -0.14351809 U&(TqRi,  
    Change in Focus                :      -1.354815 pejG%pJ  
          8     0.48754161    -0.05649072 .5t|FJ]`$  
    Change in Focus                :       0.215922 "1-|ahW  
          9     0.40357468    -0.14045766 ThvVLK  
    Change in Focus                :       0.281783 aDae0$lc.S  
         10     0.26315315    -0.28087919 ,.g9HO/R1  
    Change in Focus                :      -1.048393 9rCvnP=  
         11     0.26120585    -0.28282649 F1q a`j^'  
    Change in Focus                :       1.017611 0zL7$Q#c  
         12     0.24033815    -0.30369419 jOE~?{8m  
    Change in Focus                :      -0.109292 #nzVgV]  
         13     0.37164046    -0.17239188 ff1Em.  
    Change in Focus                :      -0.692430 U,Duq^l~s  
         14     0.48597489    -0.05805744 f<Co&^A  
    Change in Focus                :      -0.662040 PCx] >&  
         15     0.21462327    -0.32940907 P XH"%vVF  
    Change in Focus                :       1.611296 A18&9gY  
         16     0.43378226    -0.11025008 #Fl5]> |  
    Change in Focus                :      -0.640081 nJ ZQRRa:C  
         17     0.39321881    -0.15081353 HgY#O r(  
    Change in Focus                :       0.914906 f:).wi Ld  
         18     0.20692530    -0.33710703 #Is/j =  
    Change in Focus                :       0.801607 ]t23qA@^2  
         19     0.51374068    -0.03029165 [^J2<\<0  
    Change in Focus                :       0.947293 2f=7`1RCD  
         20     0.38013374    -0.16389860 DM73 Nn^5  
    Change in Focus                :       0.667010 OFyZY@B-C~  
    L, k\`9bQ  
    Number of traceable Monte Carlo files generated: 20 qM|-2Zl!+  
    DH5]Kzb/  
    Nominal     0.54403234 8%Wg;:DZx  
    Best        0.54384387    Trial     2 pFUW7jE  
    Worst       0.18154684    Trial     4 //ZYN2lT4  
    Mean        0.35770970 4Y=sTXbFt  
    Std Dev     0.11156454 7Lv5@  
    l5}b.B^w  
    M< T[%)v  
    Compensator Statistics: hlgBx~S[  
    Change in back focus: X53TFRxnT  
    Minimum            :        -1.354815 EJbFo682  
    Maximum            :         1.611296 [T5z}!_y  
    Mean               :         0.161872 RgPY,\_9+  
    Standard Deviation :         0.869664 s[ CnJZ\q  
    T\Zq/Z\  
    90% >       0.20977951               yD0,q%B`}  
    80% >       0.22748071               S!u`V3-s  
    50% >       0.38667627               'A|OVyH  
    20% >       0.46553746               /j{`hi  
    10% >       0.50064115                `D#3  
    RZV8{  
    End of Run. @`</Z)  
    $oJ)W@>  
    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 uMB|x,X I  
    z_jTR[dY  
    ][b2Q>  
    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 pxF<L\L?:  
    iTt#%Fs)4M  
    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                 xr2ew%&o  
    80% >       0.22748071                 %HRFH  
    50% >       0.38667627                 ,sAN,?eG~  
    20% >       0.46553746                 R|Oy/RGY$  
    10% >       0.50064115 S;o U'KOY  
    %^L :K5V  
    最后这个数值是MTF值呢，还是MTF的公差？ 8Ee bWs*1  
    /12D >OK  
    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？？？   "CEy r0h  
    W~1/vJ.*l  
    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  : B$k<F8!%  
    90% >       0.20977951                 P>=~\v nN#  
    80% >       0.22748071                 (NUk{MTX  
    50% >       0.38667627                 a z 7Vy-  
    20% >       0.46553746                 p6[a"~y  
    10% >       0.50064115 5y! 4ny _  
    ....... p.q :vI$J  
    V *=To  
    9<5SQ  
    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   KyW6[WA9  
    Mode                : Sensitivities St&xe_:^<  
    Sampling            : 2 p5^,3&  
    Nominal Criterion   : 0.54403234 a +Q9kh  
    Test Wavelength     : 0.6328 y3$i?}?A  
    d$s1l  
    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？ DW@PPvfs  
    <OF7: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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