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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 2 Wcu.  
    3n2^;b/]  
    o9sQ!gptw  
    b8a (.}8*  
    然后添加了默认公差分析，基本没变 i7H([b<_m  
    n[/D>Pi  
    za6 hyd^  
    )F9IzR-&m  
    然后运行分析的结果如下： MKtI 3vi?  
    8z93ETv7`  
    Analysis of Tolerances oX6C d:c-  
    pll5m7[  
    File : E:\光学设计资料\zemax练习\f500.ZMX d^'_H>x  
    Title: !jP[=  
    Date : TUE JUN 21 2011 8h ol4'B  
    .Z 7t E?  
    Units are Millimeters. /:!sn-(  
    All changes are computed using linear differences. ]`-o\,lq  
    |f}wOkl  
    Paraxial Focus compensation only. %YxKWZ/?  
    Va[&~lA)  
    WARNING: Solves should be removed prior to tolerancing. xgOt%7sb  
    z{.&sr>+v  
    Mnemonics: KMT$/I{p,  
    TFRN: Tolerance on curvature in fringes. 41R~.?  
    TTHI: Tolerance on thickness. qLBQ!>lR  
    TSDX: Tolerance on surface decentering in x. 8\il~IFyi  
    TSDY: Tolerance on surface decentering in y. ~,W|i  
    TSTX: Tolerance on surface tilt in x (degrees). $jk4H+H-  
    TSTY: Tolerance on surface tilt in y (degrees). i@{b+5$  
    TIRR: Tolerance on irregularity (fringes). ruhC:rg:/  
    TIND: Tolerance on Nd index of refraction. .==c~>N  
    TEDX: Tolerance on element decentering in x. E=.J*7  
    TEDY: Tolerance on element decentering in y. E:}s 6l  
    TETX: Tolerance on element tilt in x (degrees). uToi4]w"y  
    TETY: Tolerance on element tilt in y (degrees). )m-(-I  
    ILG&l<!E  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. VU\G49  
    l2#~   
    WARNING: Boundary constraints on compensators will be ignored. Mf5kknYuL9  
    _576Qa'rm  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm "<oR.f=0  
    Mode                : Sensitivities ({4?RtYm  
    Sampling            : 2 pJ?y  
    Nominal Criterion   : 0.54403234 a#0*#&?7@  
    Test Wavelength     : 0.6328 *<9M|H~  
    h\C1:0x{  
    fN`Prs A  
    Fields: XY Symmetric Angle in degrees GWx?RIKF  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY H1 ev W  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 lfoPFJ Z  
    0l(G7Ju  
    Sensitivity Analysis: [CnoMN  
    }Ej^"T:H_;  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 7CT446  
    Type                      Value      Criterion        Change          Value      Criterion        Change %AMF6l[  
    Fringe tolerance on surface 1 AfW:'>2  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 &S^a_L:  
    Change in Focus                :      -0.000000                            0.000000 nQw, /L k  
    Fringe tolerance on surface 2 "t{D5{q|[k  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 q|.0Ja  
    Change in Focus                :       0.000000                            0.000000 q!d7Ms{q  
    Fringe tolerance on surface 3 rp-.\Hl/a  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 wh]v{Fi'  
    Change in Focus                :      -0.000000                            0.000000 <t*3w  
    Thickness tolerance on surface 1 s 4 Uk5<  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 T.!.3B$@]  
    Change in Focus                :       0.000000                            0.000000 c*8k _o,  
    Thickness tolerance on surface 2 )q7!CG'oY  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 _h B7;N3  
    Change in Focus                :       0.000000                           -0.000000 }g.)%Bw!  
    Decenter X tolerance on surfaces 1 through 3 !;PKx]/&  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 !O,`Z`T?  
    Change in Focus                :       0.000000                            0.000000 9@(V!G  
    Decenter Y tolerance on surfaces 1 through 3 Yu9(qRK  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 b<g9L4s  
    Change in Focus                :       0.000000                            0.000000 U,9=&"e b  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ds+0y;vc  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 }8'bXG+  
    Change in Focus                :       0.000000                            0.000000 6r5<uZ9w_X  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 0Q/BTT%X  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 G{s q|1  
    Change in Focus                :       0.000000                            0.000000 7baQ4QY?n  
    Decenter X tolerance on surface 1 grCz@i  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 d _Y7/_i  
    Change in Focus                :       0.000000                            0.000000 l;JB;0<s"  
    Decenter Y tolerance on surface 1 2K(zYv54  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 tjy@sO/Q  
    Change in Focus                :       0.000000                            0.000000 6[% 4 Q[  
    Tilt X tolerance on surface (degrees) 1 r/ LgmVRn  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ;x=0+0JD  
    Change in Focus                :       0.000000                            0.000000 = :\o/)+  
    Tilt Y tolerance on surface (degrees) 1 XuW>GT/  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 {Ve_u  
    Change in Focus                :       0.000000                            0.000000 X04JQLhy"  
    Decenter X tolerance on surface 2 /`B:F5r  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 LT '2446  
    Change in Focus                :       0.000000                            0.000000 #.W<[KZf  
    Decenter Y tolerance on surface 2 jTz~ V&^  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 r7:4| 6E  
    Change in Focus                :       0.000000                            0.000000 =qTmFszT  
    Tilt X tolerance on surface (degrees) 2 }W* q  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 czp}-{4X  
    Change in Focus                :       0.000000                            0.000000 sZPA(N?  
    Tilt Y tolerance on surface (degrees) 2 h-:te9p6>4  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 w>gB&59r  
    Change in Focus                :       0.000000                            0.000000 h.h\)>DM@  
    Decenter X tolerance on surface 3 Zut"P3d=J  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 1lQO`CmR6M  
    Change in Focus                :       0.000000                            0.000000 H(j983  
    Decenter Y tolerance on surface 3 V> @+&q  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 eB*0})  
    Change in Focus                :       0.000000                            0.000000 T|Fl$is  
    Tilt X tolerance on surface (degrees) 3 0h~7"qUF@  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ]PjJy/vkjj  
    Change in Focus                :       0.000000                            0.000000 rXu^]CK *G  
    Tilt Y tolerance on surface (degrees) 3 C.;H?So(  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 EAXbbcV  
    Change in Focus                :       0.000000                            0.000000 La'XJ|>V  
    Irregularity of surface 1 in fringes ;sn]Blpq  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 6` @4i'.  
    Change in Focus                :       0.000000                            0.000000 ify}xv  
    Irregularity of surface 2 in fringes rOd~sa-H  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 N3g\X  
    Change in Focus                :       0.000000                            0.000000 zU,Qph ,<  
    Irregularity of surface 3 in fringes )>|x2q  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 avo[~ `.  
    Change in Focus                :       0.000000                            0.000000 RW04>oxVn  
    Index tolerance on surface 1 5WvtvSO  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 VsM~$ )  
    Change in Focus                :       0.000000                            0.000000 'l*p!=  
    Index tolerance on surface 2 `z{sDe;  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 I7q}<"`  
    Change in Focus                :       0.000000                           -0.000000 =;?afUj  
    *Z,?VEO  
    Worst offenders: +Q+>{HK  
    Type                      Value      Criterion        Change wz=c#}0dB  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 WvJidz?5  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Zf~Z&"C)  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 zBTyRL l  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Y<0R5rO  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 m]#oZVngy  
    TSTY   1             0.20000000     0.42678383    -0.11724851 z->[:)c  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 K/Qo~  
    TSTX   1             0.20000000     0.42678383    -0.11724851 zo~5(O@  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 YA[\|I33  
    TSTY   3             0.20000000     0.42861670    -0.11541563 #.^A5`k  
    Q&A^(z}  
    Estimated Performance Changes based upon Root-Sum-Square method: aBonq]W  
    Nominal MTF                 :     0.54403234 sV`!4 u7%}  
    Estimated change            :    -0.36299231 u#"L gG.X  
    Estimated MTF               :     0.18104003 ^\ocH|D  
    NP^j5|A*"  
    Compensator Statistics: p,K]`pt=  
    Change in back focus: osdl dS  
    Minimum            :        -0.000000 L&LK go  
    Maximum            :         0.000000 $)6%LG_@  
    Mean               :        -0.000000 Qaeg3f3F3  
    Standard Deviation :         0.000000 $vK(Qm  
    kMP3PS  
    Monte Carlo Analysis: /pS Y~*  
    Number of trials: 20 6=o'.03\f  
    $zUHka   
    Initial Statistics: Normal Distribution r(VznKSx  
    vlS+UFH0  
      Trial       Criterion        Change s7> a  
          1     0.42804416    -0.11598818 ?6T\uzL +%  
    Change in Focus                :      -0.400171 :[C"}m R1  
          2     0.54384387    -0.00018847 bs9X4n5  
    Change in Focus                :       1.018470 6( 0ME$  
          3     0.44510003    -0.09893230 JRYCM}C]  
    Change in Focus                :      -0.601922 9H#;i]t&  
          4     0.18154684    -0.36248550 ]]^eIjg>a6  
    Change in Focus                :       0.920681 "F+m}GJ=a  
          5     0.28665820    -0.25737414 d,d ohi  
    Change in Focus                :       1.253875 eN{ewn#0.  
          6     0.21263372    -0.33139862 sm?V%NX&  
    Change in Focus                :      -0.903878 xg8$ <Ut  
          7     0.40051424    -0.14351809 &b:SDl6  
    Change in Focus                :      -1.354815 d$T856  
          8     0.48754161    -0.05649072 1@S(v L3a  
    Change in Focus                :       0.215922 %;MM+xVVX  
          9     0.40357468    -0.14045766 aF]cEe  
    Change in Focus                :       0.281783 nc/F@HCB  
         10     0.26315315    -0.28087919 %-J} m  
    Change in Focus                :      -1.048393 # m;|QWW  
         11     0.26120585    -0.28282649 6[~_;0  
    Change in Focus                :       1.017611 vg;9"A!(  
         12     0.24033815    -0.30369419 (R|Ftjs .  
    Change in Focus                :      -0.109292 0n-S%e5  
         13     0.37164046    -0.17239188 RHv|ijYy  
    Change in Focus                :      -0.692430 '}BYMEd/m%  
         14     0.48597489    -0.05805744 rMEM$1vPU  
    Change in Focus                :      -0.662040 T7qE 2  
         15     0.21462327    -0.32940907 '?)<e^  
    Change in Focus                :       1.611296 "p\5:<  
         16     0.43378226    -0.11025008 _A]=45cn~  
    Change in Focus                :      -0.640081 gO%o A} !i  
         17     0.39321881    -0.15081353 Or<OmxJg  
    Change in Focus                :       0.914906 9[ ,+4&wX7  
         18     0.20692530    -0.33710703  O3~7  
    Change in Focus                :       0.801607 dk>qTY+j5  
         19     0.51374068    -0.03029165 - xKa-3  
    Change in Focus                :       0.947293 7+;CA+;  
         20     0.38013374    -0.16389860 E@[ZwTnJ  
    Change in Focus                :       0.667010 ZBsV  
    (t_%8Eu  
    Number of traceable Monte Carlo files generated: 20 ={[9kR i  
    Q.i_?a  
    Nominal     0.54403234 q)Qg'l^f  
    Best        0.54384387    Trial     2 ;%B:1Z  
    Worst       0.18154684    Trial     4 N4rDe]JnPR  
    Mean        0.35770970 ZZ2vdy38  
    Std Dev     0.11156454 GMOnp$@H^s  
    ,0\P r  
    V_"UiN"o  
    Compensator Statistics: hZwJ@ Vm#  
    Change in back focus: aaRc?b'/  
    Minimum            :        -1.354815 88g|(k/  
    Maximum            :         1.611296 b`& :`  
    Mean               :         0.161872 zTS P8Q7  
    Standard Deviation :         0.869664 |{ TVW  
    @5tGI U;1  
    90% >       0.20977951               kG>m(n  
    80% >       0.22748071               JxmFUheLt  
    50% >       0.38667627               (,^jgv|I  
    20% >       0.46553746               UiQF4Uc"  
    10% >       0.50064115                m TgsvC  
    [5i }C K_=  
    End of Run. e]zd6{g[m  
    Z# o;H$  
    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 fV o7wp  
    u#)ARCx,w  
    "|nh=!L  
    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 ^E]y >Y  
    I4(z'C  
    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                 x:iLBYf  
    80% >       0.22748071                 {]Ec:6  
    50% >       0.38667627                 q{uv?{I  
    20% >       0.46553746                 FJ] ?45  
    10% >       0.50064115 ~S~4pK  
    tqXCj}mR  
    最后这个数值是MTF值呢，还是MTF的公差？ mWTV)z57  
    UO4z~  
    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？？？   #k|f%!-Vo  
     ?)2;W  
    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  : wLKC6@ W  
    90% >       0.20977951                 {cmV{ 4Yx  
    80% >       0.22748071                 L RPdA "Z  
    50% >       0.38667627                 ?3do-tTp  
    20% >       0.46553746                 nQ;M@k&9eV  
    10% >       0.50064115 IYe,VL  
    ....... UVD*GsBk  
    JnS@}m  
    !BR@"%hx  
    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   2[1lwV  
    Mode                : Sensitivities k#x"'yZ  
    Sampling            : 2 m">2XGCn  
    Nominal Criterion   : 0.54403234 j5m]zh5\J=  
    Test Wavelength     : 0.6328 r^`~GG!,Q  
    y)T|1)  
    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？ 838@jip  
    A:V/i:IZfR  
    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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