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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 g1s\6%g  
    8V$:th('  
    5VG[FY6Pl  
    &hb:~>  
    然后添加了默认公差分析，基本没变 %8a886;2  
    {q-<1|xj/J  
    O8drR4 Pt  
    xF4>G0  
    然后运行分析的结果如下： vS{zLXg  
    DZI:zsf;5Q  
    Analysis of Tolerances toCxY+"nbU  
    =6sL}$  
    File : E:\光学设计资料\zemax练习\f500.ZMX ,>rr|O  
    Title: c{dge/2yb  
    Date : TUE JUN 21 2011 MWxv\o   
    "=S< xT+  
    Units are Millimeters. X<<hb  
    All changes are computed using linear differences. SXW8p>1Jw  
    c[~LI<>ic  
    Paraxial Focus compensation only. ~K-c-Zs#z  
    N=QeeAI}}m  
    WARNING: Solves should be removed prior to tolerancing. A1A/OU<Vb  
    {T0f]]}Q  
    Mnemonics: Uczb"k5  
    TFRN: Tolerance on curvature in fringes. gfPht 5  
    TTHI: Tolerance on thickness. {{WA=\N8C  
    TSDX: Tolerance on surface decentering in x. 5g{F-  
    TSDY: Tolerance on surface decentering in y. R\B-cU[,  
    TSTX: Tolerance on surface tilt in x (degrees). IP 9{vk  
    TSTY: Tolerance on surface tilt in y (degrees). dDAI fe2y  
    TIRR: Tolerance on irregularity (fringes). "|6#n34  
    TIND: Tolerance on Nd index of refraction. 8RfFP\AP  
    TEDX: Tolerance on element decentering in x. T7!"gJ  
    TEDY: Tolerance on element decentering in y. f;u<r?>Z  
    TETX: Tolerance on element tilt in x (degrees). .1[[Y}  
    TETY: Tolerance on element tilt in y (degrees). 8Q%rBl.  
    .9<  i  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. $~[k?D  
    Tjfg[Z/x  
    WARNING: Boundary constraints on compensators will be ignored. *P#okwp  
    d&dp#)._8  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm %)Pn<! L  
    Mode                : Sensitivities  4|9c+^%^  
    Sampling            : 2 8%dE$smH  
    Nominal Criterion   : 0.54403234 T w!]N%E  
    Test Wavelength     : 0.6328 yH'vhtop  
    a19yw]hF5  
    b0A*zQA_)  
    Fields: XY Symmetric Angle in degrees ]5+db0  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY J5Nz<  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000  i,{'}B  
    :+9KNyA  
    Sensitivity Analysis: E0miX)AG  
    39|4)1e  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| meHnT9a^  
    Type                      Value      Criterion        Change          Value      Criterion        Change x2|YrkGv  
    Fringe tolerance on surface 1 S+mZ.aFS0z  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 |hp_<F9.  
    Change in Focus                :      -0.000000                            0.000000 cH&-/|N  
    Fringe tolerance on surface 2 ],lrT0_cT  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 {R2gz]v4  
    Change in Focus                :       0.000000                            0.000000 .o(XnY)cgJ  
    Fringe tolerance on surface 3 rNgFsFQ>.  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 [Ch)6p  
    Change in Focus                :      -0.000000                            0.000000 yEnurq%J  
    Thickness tolerance on surface 1 u}eqU%  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 wF +9Iu  
    Change in Focus                :       0.000000                            0.000000 FCC9Ht8U?  
    Thickness tolerance on surface 2 Mpfdl65  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 U4J9b p|  
    Change in Focus                :       0.000000                           -0.000000 5Av bKT  
    Decenter X tolerance on surfaces 1 through 3 eY)JuJ?  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 7IrbwAGZ3  
    Change in Focus                :       0.000000                            0.000000 /B $9B  
    Decenter Y tolerance on surfaces 1 through 3 -R^OYgF  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 #}/YnVk  
    Change in Focus                :       0.000000                            0.000000 Xndgs}zz  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 4,8=0[eRG  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 r[ UZHX5+S  
    Change in Focus                :       0.000000                            0.000000 (vq0Gl  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) qUH02" z@9  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 +1Qa7 \  
    Change in Focus                :       0.000000                            0.000000 wUGSM"~ |  
    Decenter X tolerance on surface 1 WOW:$.VO^  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 tOJK~%'  
    Change in Focus                :       0.000000                            0.000000 rOt`5_2f  
    Decenter Y tolerance on surface 1 -6URM`y'j  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 cmpT_51~O  
    Change in Focus                :       0.000000                            0.000000 }@kD&2  
    Tilt X tolerance on surface (degrees) 1 {*gO1TZt9  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 d|^cKLu  
    Change in Focus                :       0.000000                            0.000000 PSOW}Y|q  
    Tilt Y tolerance on surface (degrees) 1 [Yo3=(7J  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 O]"3o,/]G  
    Change in Focus                :       0.000000                            0.000000 &n_aMZ;  
    Decenter X tolerance on surface 2 ?-40bb  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Pc+8CuN?  
    Change in Focus                :       0.000000                            0.000000 k 8C[fRev  
    Decenter Y tolerance on surface 2 Ck71N3~W  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 f`zH#{u  
    Change in Focus                :       0.000000                            0.000000 FtaO@5pS54  
    Tilt X tolerance on surface (degrees) 2 5XK}8\  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 CdxEY  
    Change in Focus                :       0.000000                            0.000000 "pP5;*^f  
    Tilt Y tolerance on surface (degrees) 2 NQ7 j{dJ?  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 aR3R,6ec  
    Change in Focus                :       0.000000                            0.000000 dKs^Dq  
    Decenter X tolerance on surface 3 <M(Jqb cWa  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 2~:jg1  
    Change in Focus                :       0.000000                            0.000000 Rgb1B3gu  
    Decenter Y tolerance on surface 3 koi QJdK  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 f L @rv  
    Change in Focus                :       0.000000                            0.000000 "A_,Ga  
    Tilt X tolerance on surface (degrees) 3 7MRu=Z.-b  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 X67.%>#3  
    Change in Focus                :       0.000000                            0.000000 XS$5TNI  
    Tilt Y tolerance on surface (degrees) 3 qTbY'V5A  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 wzLR]<6G  
    Change in Focus                :       0.000000                            0.000000 >C6wm^bl  
    Irregularity of surface 1 in fringes }( x|  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 <AZ21"oR/  
    Change in Focus                :       0.000000                            0.000000 5|&:l8=  
    Irregularity of surface 2 in fringes \,:3bY_d  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 l[KFK%?  
    Change in Focus                :       0.000000                            0.000000 4>q^W$  
    Irregularity of surface 3 in fringes L@ ,-V  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 <SiD m-=E  
    Change in Focus                :       0.000000                            0.000000 d>ltL`xn  
    Index tolerance on surface 1 [;bZQ6JR  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 1J}i :i&  
    Change in Focus                :       0.000000                            0.000000 (C< ~:Y?%  
    Index tolerance on surface 2 .C]V==z`[4  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 +&LzLF.bK  
    Change in Focus                :       0.000000                           -0.000000 Yzr RnVr  
    tBDaFB  
    Worst offenders: z^+`S:  
    Type                      Value      Criterion        Change ;B%NFvG  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 [ \I&/?On  
    TSTY   2             0.20000000     0.35349910    -0.19053324 m$T?~o o  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 h @{U>U7  
    TSTX   2             0.20000000     0.35349910    -0.19053324 P4"Pb\o*  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 'r KDw06/  
    TSTY   1             0.20000000     0.42678383    -0.11724851 YkRv~bc1]  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 =@#[@Ia  
    TSTX   1             0.20000000     0.42678383    -0.11724851 l,FK\  
    TSTY   3            -0.20000000     0.42861670    -0.11541563  Vf:w.G A  
    TSTY   3             0.20000000     0.42861670    -0.11541563 Of)EBa<5^  
    sE*A,z?  
    Estimated Performance Changes based upon Root-Sum-Square method: @"BvyS,p  
    Nominal MTF                 :     0.54403234 *?/9lAm  
    Estimated change            :    -0.36299231 2o0.ttBAqZ  
    Estimated MTF               :     0.18104003 f/spJ<B).4  
    (kpn"]^'  
    Compensator Statistics: ML6V,V/e  
    Change in back focus: ISHNeO8  
    Minimum            :        -0.000000 C$X )I~M  
    Maximum            :         0.000000 N3P!<J/tc  
    Mean               :        -0.000000 O34'c_ fZ  
    Standard Deviation :         0.000000 \Mk;Y  
    ->DfT*)  
    Monte Carlo Analysis: f_`gUMf  
    Number of trials: 20 a6K1-SR^6)  
    W~15[r0  
    Initial Statistics: Normal Distribution !^Mk5E(  
    3 y!yz3E  
      Trial       Criterion        Change xPa>-N=*  
          1     0.42804416    -0.11598818 m5HP56a  
    Change in Focus                :      -0.400171  3nfw:.  
          2     0.54384387    -0.00018847 f =H,BQ  
    Change in Focus                :       1.018470 NTRw:'  
          3     0.44510003    -0.09893230 Wsb=SM7;  
    Change in Focus                :      -0.601922 0 S3~IeJ  
          4     0.18154684    -0.36248550 :tP:X+?O  
    Change in Focus                :       0.920681 '}a[9v76  
          5     0.28665820    -0.25737414 Xg*IOhF6x  
    Change in Focus                :       1.253875 3VJoH4E!6  
          6     0.21263372    -0.33139862 ".&x`C  
    Change in Focus                :      -0.903878 K*uFqdLL!  
          7     0.40051424    -0.14351809 QJFx/zU  
    Change in Focus                :      -1.354815 uq;,h46ki  
          8     0.48754161    -0.05649072 b*4[)Yg4  
    Change in Focus                :       0.215922 rvT7 5dV0  
          9     0.40357468    -0.14045766 @:$zReS2  
    Change in Focus                :       0.281783 }8E//$J  
         10     0.26315315    -0.28087919 u@SE)qg  
    Change in Focus                :      -1.048393 1x+Y gL5  
         11     0.26120585    -0.28282649 !ndc <],  
    Change in Focus                :       1.017611 <fX]`57Dc`  
         12     0.24033815    -0.30369419 o[AQS`  
    Change in Focus                :      -0.109292 E.v~<[g  
         13     0.37164046    -0.17239188 ^FSUK  
    Change in Focus                :      -0.692430 9wLV\>i  
         14     0.48597489    -0.05805744 XAuB.)|  
    Change in Focus                :      -0.662040 p#}38`  
         15     0.21462327    -0.32940907 \m!swYy  
    Change in Focus                :       1.611296 #84pRU~  
         16     0.43378226    -0.11025008 nV I\Or[  
    Change in Focus                :      -0.640081 J-lQPMI,  
         17     0.39321881    -0.15081353 qX{m7  
    Change in Focus                :       0.914906 M70Xdn  
         18     0.20692530    -0.33710703 $rf4h]&<  
    Change in Focus                :       0.801607 jRXpEiM  
         19     0.51374068    -0.03029165 Mf0g)X}1  
    Change in Focus                :       0.947293 X&._<2  
         20     0.38013374    -0.16389860 |Ia3bV W  
    Change in Focus                :       0.667010 4VE7%.z+  
    -d\O{{%>.z  
    Number of traceable Monte Carlo files generated: 20 w5"C<5^  
    wC@5[e$  
    Nominal     0.54403234 VXvr`U\  
    Best        0.54384387    Trial     2 P>%\pCJ])  
    Worst       0.18154684    Trial     4 .?b2Bd!MC  
    Mean        0.35770970 c@:L7#8  
    Std Dev     0.11156454 y|!%C-P  
    0;'kv |  
    o uKID_ '  
    Compensator Statistics: )5P*O5kQ -  
    Change in back focus: @L|X('i  
    Minimum            :        -1.354815 (x9d7$2  
    Maximum            :         1.611296 5J1A|qII  
    Mean               :         0.161872 ' pOtd7Vr  
    Standard Deviation :         0.869664 Q[i/]  
    {Q8DPkW  
    90% >       0.20977951               iZ+\vO?|  
    80% >       0.22748071               1E!0N`E  
    50% >       0.38667627               xKKL4ws  
    20% >       0.46553746               S1^u/$*6  
    10% >       0.50064115                dwks"5l  
    O4FW/)gq  
    End of Run. 5,>1rd<B  
    NUBzmnA>8  
    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 ?}sh@;]*h  
    8Dpf{9Y-E  
    #V[ ?puE@  
    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 -CW&!oW  
    Lys4l$J]  
    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                 FCQoz"M  
    80% >       0.22748071                 -@i)2J_WP  
    50% >       0.38667627                 C.s{ &  
    20% >       0.46553746                 Y+<C[Fiq  
    10% >       0.50064115 uOc>~ITPS  
    ]4\^>  
    最后这个数值是MTF值呢，还是MTF的公差？ [6BL C{2  
    s W+YfJT  
    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？？？   nWN~G  
    wKum{X8  
    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  : n8[sR;r5f  
    90% >       0.20977951                 {9;~xxTo  
    80% >       0.22748071                 Lj*F KP\{  
    50% >       0.38667627                 :m8ED[9b  
    20% >       0.46553746                 tyP-J4J  
    10% >       0.50064115 Vnh +2XiK  
    ....... T 6QnCmB4  
    TzPx4L6?  
    \^Y#"zXo1  
    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   T:)>Tcv}:  
    Mode                : Sensitivities iM8hGQ`  
    Sampling            : 2 '0t j2  
    Nominal Criterion   : 0.54403234 X'k w5P!sq  
    Test Wavelength     : 0.6328 =7e8N&-nv  
    ]XPGlM  
    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？ UD9h5PgT  
    xje{ kx#  
    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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