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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 d/+s-g p  
    }/tf^@  
     EAr;  
    {[bpvK  
    然后添加了默认公差分析,基本没变 Bk~lM'  
    kwww5p ["  
    ' 8R5 Tl  
    o3GZcH?  
    然后运行分析的结果如下: usKP9[T$  
    /EHO(d!<  
    Analysis of Tolerances st.{AEv@  
    9 M?UPE  
    File : E:\光学设计资料\zemax练习\f500.ZMX ~[aV\r?  
    Title: ',|OoxhbK  
    Date : TUE JUN 21 2011 :%28*fl  
    Vnb@5W2\  
    Units are Millimeters. 7Kj7or|  
    All changes are computed using linear differences. f;+.j/ +  
    uARkf'  
    Paraxial Focus compensation only. fMHw=wJQ  
    EHl~y=9  
    WARNING: Solves should be removed prior to tolerancing. WcXNc`x  
    5KTFf6Uq  
    Mnemonics: grI#'x  
    TFRN: Tolerance on curvature in fringes. l7<VHz0b  
    TTHI: Tolerance on thickness. &_@M 6[-  
    TSDX: Tolerance on surface decentering in x. ^G5fs'd  
    TSDY: Tolerance on surface decentering in y. 5&A' +]  
    TSTX: Tolerance on surface tilt in x (degrees). !Dc;R+Ir0!  
    TSTY: Tolerance on surface tilt in y (degrees). z 36Y/{>[  
    TIRR: Tolerance on irregularity (fringes). ?#doH,  
    TIND: Tolerance on Nd index of refraction. S,,Wb &A$  
    TEDX: Tolerance on element decentering in x. 'F*OlZ!BWy  
    TEDY: Tolerance on element decentering in y. bF;|0X$ x  
    TETX: Tolerance on element tilt in x (degrees). ",5=LW&,  
    TETY: Tolerance on element tilt in y (degrees). SN7_^F  
    EronNtu8i  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 'UGgY3  
    wsR\qq  
    WARNING: Boundary constraints on compensators will be ignored. -nD} k  
    =_6 Q26  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm {~#01p5  
    Mode                : Sensitivities ?!c7Zx,(  
    Sampling            : 2 8MU7|9 Q  
    Nominal Criterion   : 0.54403234 6/'X$}X  
    Test Wavelength     : 0.6328 %3=T7j  
    jCx*{TO  
    6Y.k<oem  
    Fields: XY Symmetric Angle in degrees hr&UD|E=  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY a>ye  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 %rl<%%T#.M  
    J!Rqm!)q  
    Sensitivity Analysis: d;3f80Kd*  
    V.+a}J=Cw  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| { q&`B  
    Type                      Value      Criterion        Change          Value      Criterion        Change >r4BI}8SK<  
    Fringe tolerance on surface 1 >*|Eyv_  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 !0Ak)Q]e'  
    Change in Focus                :      -0.000000                            0.000000 XCez5Q1  
    Fringe tolerance on surface 2 qM>Dt  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 a@ ? Bv  
    Change in Focus                :       0.000000                            0.000000 , d HAD  
    Fringe tolerance on surface 3 Y'}c$*OkI  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 gxVJH'[V5  
    Change in Focus                :      -0.000000                            0.000000 dJb7d`  
    Thickness tolerance on surface 1 ,oEAWNbgQ  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ,[_)BM  
    Change in Focus                :       0.000000                            0.000000 ~X;sa,)L1+  
    Thickness tolerance on surface 2 p-z!i+  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 e)L!4Y44K  
    Change in Focus                :       0.000000                           -0.000000 0'zjPE#  
    Decenter X tolerance on surfaces 1 through 3 J|z' <W  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 6Tq2WZ}<'  
    Change in Focus                :       0.000000                            0.000000 5mZ9rLn  
    Decenter Y tolerance on surfaces 1 through 3 :X1Y  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 D{+D.4\  
    Change in Focus                :       0.000000                            0.000000 X&i" K'mV  
    Tilt X tolerance on surfaces 1 through 3 (degrees) Aq$o&t  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 09iD| $~  
    Change in Focus                :       0.000000                            0.000000 'Rv.6>xqc  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) sBE@{w%  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 +xr;X 9  
    Change in Focus                :       0.000000                            0.000000 mm | *  
    Decenter X tolerance on surface 1 tg~7^(s  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 LsK fCB}  
    Change in Focus                :       0.000000                            0.000000 iZ(p]0aP7  
    Decenter Y tolerance on surface 1 nxuR^6 Ai  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 E/d\ebX|  
    Change in Focus                :       0.000000                            0.000000 {#+'T13sx  
    Tilt X tolerance on surface (degrees) 1 OJ7y  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 2\Yv;J+;  
    Change in Focus                :       0.000000                            0.000000 #vR5a}BAk  
    Tilt Y tolerance on surface (degrees) 1 a7]Z_Gk  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 +J !1z  
    Change in Focus                :       0.000000                            0.000000 d%1 Vby  
    Decenter X tolerance on surface 2 6x@]b>W  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 7#g<fh  
    Change in Focus                :       0.000000                            0.000000 r6+IJxUd  
    Decenter Y tolerance on surface 2 !:D,|k\m  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Mi[,-8Sk  
    Change in Focus                :       0.000000                            0.000000 y8|}bd<Sr  
    Tilt X tolerance on surface (degrees) 2 Lo9 \[4FP  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 d^|r#"o[  
    Change in Focus                :       0.000000                            0.000000 tkdyR1-  
    Tilt Y tolerance on surface (degrees) 2 A+hT2Ew@t}  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 (`f)Tt=`  
    Change in Focus                :       0.000000                            0.000000 (=s%>lW|  
    Decenter X tolerance on surface 3 `u8=~]rblj  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 D._7)$d  
    Change in Focus                :       0.000000                            0.000000 7$:Jea  
    Decenter Y tolerance on surface 3 * \ tR  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 1[". z{V3*  
    Change in Focus                :       0.000000                            0.000000 uq]E^#^  
    Tilt X tolerance on surface (degrees) 3 M[&p[P@  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Wp= &nh  
    Change in Focus                :       0.000000                            0.000000 9sB LCZ  
    Tilt Y tolerance on surface (degrees) 3 U9//m=_  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563  p;vrPS  
    Change in Focus                :       0.000000                            0.000000 h)?Km{u%  
    Irregularity of surface 1 in fringes l @r`NFWD@  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ^aL> /'Y#|  
    Change in Focus                :       0.000000                            0.000000 CSE!Abg  
    Irregularity of surface 2 in fringes !p 70g0+  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 &_Gu'A({J  
    Change in Focus                :       0.000000                            0.000000 @<p9 O0  
    Irregularity of surface 3 in fringes '\LU 8VC  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Ua>.k|>0  
    Change in Focus                :       0.000000                            0.000000 IpsV4nmnz-  
    Index tolerance on surface 1 d#HN '(2t  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 bY=Yb  
    Change in Focus                :       0.000000                            0.000000 ~*G}+Ur$2  
    Index tolerance on surface 2 8EZ,hY^  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 +PHuQ  
    Change in Focus                :       0.000000                           -0.000000 toC|vn&P  
    g_MxG!+(V  
    Worst offenders:  ev(E  
    Type                      Value      Criterion        Change 1.z !u%2  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 SQf.R%cg$  
    TSTY   2             0.20000000     0.35349910    -0.19053324 N_y#Y{c{(  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 s Qa9M  
    TSTX   2             0.20000000     0.35349910    -0.19053324 ltmD=-]G_  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 Z4PAdT  
    TSTY   1             0.20000000     0.42678383    -0.11724851 D?9EO=  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 @S  Quc  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ~RnBs`&!  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 VN<baK%]  
    TSTY   3             0.20000000     0.42861670    -0.11541563 78u=Jz6  
    c}#(,<8X  
    Estimated Performance Changes based upon Root-Sum-Square method: N+ei)-  
    Nominal MTF                 :     0.54403234 is=|rY9$  
    Estimated change            :    -0.36299231 _1HEGX\  
    Estimated MTF               :     0.18104003 PAy7b7m~B  
    ^p #bxN")  
    Compensator Statistics: vjXCArS  
    Change in back focus: `k'Dm:*`u4  
    Minimum            :        -0.000000 ${, !Ll7)  
    Maximum            :         0.000000 6T A2  
    Mean               :        -0.000000 b]5S9^=LI  
    Standard Deviation :         0.000000 R2nDK7j  
    )N]%cO(^  
    Monte Carlo Analysis: Z`bo1,6>  
    Number of trials: 20 ju;Myi}a  
    L~L]MC&  
    Initial Statistics: Normal Distribution kv?j]<WN  
      [IW6F  
      Trial       Criterion        Change <fcw:Ae  
          1     0.42804416    -0.11598818 7:h_U9Za?$  
    Change in Focus                :      -0.400171 .[X"+i\  
          2     0.54384387    -0.00018847 8]0?mV8iOE  
    Change in Focus                :       1.018470 |0a GX]Y  
          3     0.44510003    -0.09893230 Qx !! Ttd{  
    Change in Focus                :      -0.601922 V@1K  
          4     0.18154684    -0.36248550 oJ)v6"j  
    Change in Focus                :       0.920681 . aqP=  
          5     0.28665820    -0.25737414 Zl`sY5{1  
    Change in Focus                :       1.253875 I'16-  
          6     0.21263372    -0.33139862 7)+%;|~  
    Change in Focus                :      -0.903878 &5;y&dh  
          7     0.40051424    -0.14351809 U-:_4[  
    Change in Focus                :      -1.354815 3+# "4O  
          8     0.48754161    -0.05649072 z`+j]NX]  
    Change in Focus                :       0.215922 TGQDt|+Z  
          9     0.40357468    -0.14045766 i"C?6R  
    Change in Focus                :       0.281783 I~I$/j]e`  
         10     0.26315315    -0.28087919 ^,;8ra*h  
    Change in Focus                :      -1.048393 $;%dQ!7*  
         11     0.26120585    -0.28282649 t>>\U X  
    Change in Focus                :       1.017611 Q\<^ih51  
         12     0.24033815    -0.30369419 IpMZ{kJlv`  
    Change in Focus                :      -0.109292 7u7 <"?v=  
         13     0.37164046    -0.17239188 'P?DZE  
    Change in Focus                :      -0.692430 SB`"%6  
         14     0.48597489    -0.05805744 n`)wD~mk  
    Change in Focus                :      -0.662040 s|=.L&"   
         15     0.21462327    -0.32940907 auT$-Ki8  
    Change in Focus                :       1.611296 Dhe ]f#d  
         16     0.43378226    -0.11025008 #>byP?)n  
    Change in Focus                :      -0.640081 y[@<goT  
         17     0.39321881    -0.15081353 4FgY!k  
    Change in Focus                :       0.914906 0^{?kg2o_  
         18     0.20692530    -0.33710703 4$!iw3N(  
    Change in Focus                :       0.801607 P&@[ j0  
         19     0.51374068    -0.03029165 )C CrO   
    Change in Focus                :       0.947293 (" >gLr  
         20     0.38013374    -0.16389860 a0ze7F<(  
    Change in Focus                :       0.667010 A/"p PO  
    xiPP&$mg  
    Number of traceable Monte Carlo files generated: 20 juuV3et  
    Bswd20(w  
    Nominal     0.54403234 QWBQ 0#L  
    Best        0.54384387    Trial     2 pJ1Q~tI  
    Worst       0.18154684    Trial     4 U)N_/  
    Mean        0.35770970 %L9A6%gr  
    Std Dev     0.11156454 +t XOP|X  
    gZr/Dfy  
    ~|~j01#  
    Compensator Statistics: [oQ&}3\XJ  
    Change in back focus: |cBpX+D  
    Minimum            :        -1.354815 !*gTC1bvB  
    Maximum            :         1.611296 {E~ MqrX  
    Mean               :         0.161872 O$=)  
    Standard Deviation :         0.869664 6uijxia  
    z!I(B^)BkT  
    90% >       0.20977951               x@]pUA1  
    80% >       0.22748071               JDzk v%E^  
    50% >       0.38667627               9GZKT{*  
    20% >       0.46553746               AT{ewb  
    10% >       0.50064115                 ,JcQp=g  
    '?~k`zK  
    End of Run. &n:F])`2  
    7^J-5lY3S  
    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 1+^L,-k!  
    =R^V[zTn_  
    WqC6 c&NM  
    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 9R"bo*RIS  
    [lC*|4t&  
    不吝赐教
     
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    离线sansummer
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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?
    离线sansummer
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 T"Wq:  
    80% >       0.22748071                 ~2~KcgPsq  
    50% >       0.38667627                 d*1@lmV*  
    20% >       0.46553746                 AdB5D_ Ir  
    10% >       0.50064115 ]P ->xJ  
    0}Xkj)R,  
    最后这个数值是MTF值呢,还是MTF的公差? B{|P}fN5}  
    6kjBd3  
    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???   U$pHfNTH  
    ?/{ qRz'C<  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : 'iMI&?8u  
    90% >       0.20977951                 4VaUa8 D  
    80% >       0.22748071                 Fdu0?H2TL  
    50% >       0.38667627                 G5=(3V%  
    20% >       0.46553746                 ^lRXc.c z  
    10% >       0.50064115 2;[75(l6|}  
    ....... WU#bA|Cf  
    #B`"B  
    jDgiH}  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   wOHK dQ'  
    Mode                : Sensitivities fgn*3 pg  
    Sampling            : 2 e#kPf 'gL  
    Nominal Criterion   : 0.54403234 ./5|i*ow  
    Test Wavelength     : 0.6328 X_Y$-I$qd  
    &ks>.l\  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
    离线sansummer
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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? W.zA1S  
    s}`=pk/FM  
    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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    恩,多多尝试