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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 ql c{k/ u  
    SYmiDR  
    !xo; $4  
     MuCnBx  
    然后添加了默认公差分析，基本没变 E]IPag8C  
    E A}Vb(2  
    YR} P;  
    dqo&3^px  
    然后运行分析的结果如下： l4`HuNR1  
    [n{c,U F  
    Analysis of Tolerances -McDNM  
    &fu J%  
    File : E:\光学设计资料\zemax练习\f500.ZMX 3 h~U)mg  
    Title: %V3xO%  
    Date : TUE JUN 21 2011 0?d}Oj  
    gm}[`GMU  
    Units are Millimeters. /~B \1  
    All changes are computed using linear differences. M<"H1>q@  
    1#2B1&  
    Paraxial Focus compensation only. |g}~7*+i  
    ]iL>Zxex  
    WARNING: Solves should be removed prior to tolerancing. bEc @"^)  
    7o5~J)qIC  
    Mnemonics: yJ!x`RD),w  
    TFRN: Tolerance on curvature in fringes. )RE~=*?d  
    TTHI: Tolerance on thickness. :k*3?*'K  
    TSDX: Tolerance on surface decentering in x. &XE eJ  
    TSDY: Tolerance on surface decentering in y. l9up?opq  
    TSTX: Tolerance on surface tilt in x (degrees). Q!_@Am"h  
    TSTY: Tolerance on surface tilt in y (degrees). .qjdi`v  
    TIRR: Tolerance on irregularity (fringes). x%\m/_5w%  
    TIND: Tolerance on Nd index of refraction. yC<[LH  
    TEDX: Tolerance on element decentering in x. Cvf^3~ q  
    TEDY: Tolerance on element decentering in y. G)'(%rl  
    TETX: Tolerance on element tilt in x (degrees). \C(dWs  
    TETY: Tolerance on element tilt in y (degrees). 'HdOW[3o  
    :P1/kYg  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. g =)djXW  
    4`mF6%UC  
    WARNING: Boundary constraints on compensators will be ignored. !O-9W=NJ  
    WOaj_o  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm oykqCN  
    Mode                : Sensitivities !W ,pjW%Y  
    Sampling            : 2 f/Q7WXl0  
    Nominal Criterion   : 0.54403234 +,BJ4``*k  
    Test Wavelength     : 0.6328 #MhieG5  
    etHkyF  
    BDCFToSf|  
    Fields: XY Symmetric Angle in degrees }*ZOD1j  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 9/x_p;bI  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 9/nS?>11  
    DKGZm<G>  
    Sensitivity Analysis: 7<ZCeM2x  
    ?{Gf'Y}y&  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ;:)?@IuSy  
    Type                      Value      Criterion        Change          Value      Criterion        Change )(&WhZc Z  
    Fringe tolerance on surface 1 $_P*Bk)  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 j;+!BKWy4  
    Change in Focus                :      -0.000000                            0.000000 !ufSO9eDx"  
    Fringe tolerance on surface 2 ;.g <u  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Xw2tCRzD  
    Change in Focus                :       0.000000                            0.000000 TT0~41&l  
    Fringe tolerance on surface 3 =p lG9  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 9J!@,Zsh  
    Change in Focus                :      -0.000000                            0.000000 \?X'U:  
    Thickness tolerance on surface 1 - #ta/*TT:  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 YdI&OzaroE  
    Change in Focus                :       0.000000                            0.000000 'n)]"G|  
    Thickness tolerance on surface 2 ct3^V M&/  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 9W[ ~c"Ku  
    Change in Focus                :       0.000000                           -0.000000 ;1&7v  
    Decenter X tolerance on surfaces 1 through 3 32N *E,  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 #el i_Cxe  
    Change in Focus                :       0.000000                            0.000000 vV?=r5j  
    Decenter Y tolerance on surfaces 1 through 3  !AGjiP$  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 o1"-x  
    Change in Focus                :       0.000000                            0.000000 #<\A[Po  
    Tilt X tolerance on surfaces 1 through 3 (degrees) *&\fBi]  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 6tBh`nYB=  
    Change in Focus                :       0.000000                            0.000000 S1R:/9 z  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) q-;z!iq|!  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 h xCt[G@  
    Change in Focus                :       0.000000                            0.000000 #!WD1a?L  
    Decenter X tolerance on surface 1 a_pNFe  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 d1`us G"  
    Change in Focus                :       0.000000                            0.000000 *k]izWsV*  
    Decenter Y tolerance on surface 1 gUcG#  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 O'G,   
    Change in Focus                :       0.000000                            0.000000 $g?`yE(K  
    Tilt X tolerance on surface (degrees) 1 iA^GA8dn  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 NG2@.hP:uU  
    Change in Focus                :       0.000000                            0.000000 Psf'#4g  
    Tilt Y tolerance on surface (degrees) 1 `oxs;;P  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 OC[+t6  
    Change in Focus                :       0.000000                            0.000000 <L72nwcK  
    Decenter X tolerance on surface 2 3r)<:4a u&  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 $ +`   
    Change in Focus                :       0.000000                            0.000000 fgg;WXcT ~  
    Decenter Y tolerance on surface 2 tyH*epa nw  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 !H5r+%Oo|  
    Change in Focus                :       0.000000                            0.000000 *W#_W]Tu  
    Tilt X tolerance on surface (degrees) 2 L0Fhjbc  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 q0oNRAvn"  
    Change in Focus                :       0.000000                            0.000000 <]u~;e57  
    Tilt Y tolerance on surface (degrees) 2 ]Y%?kQ^  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 t/=xY'7  
    Change in Focus                :       0.000000                            0.000000 p&:(D=pIu  
    Decenter X tolerance on surface 3 5F8sigr/h  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 FK$?8Jp  
    Change in Focus                :       0.000000                            0.000000 s5s'$|h"  
    Decenter Y tolerance on surface 3 xlqh,?'>W  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 9Okb)K95  
    Change in Focus                :       0.000000                            0.000000 H^N@fG<*dh  
    Tilt X tolerance on surface (degrees) 3 &wlSOC')j  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 em87`Hj^lo  
    Change in Focus                :       0.000000                            0.000000 6<h?%j(  
    Tilt Y tolerance on surface (degrees) 3 {~"&$DY2  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 2VNMz[W'  
    Change in Focus                :       0.000000                            0.000000 PLi[T4u  
    Irregularity of surface 1 in fringes Btmv{'T_y@  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 $_6DvJ0  
    Change in Focus                :       0.000000                            0.000000 .H,wdzg)  
    Irregularity of surface 2 in fringes KT)A{i  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ;t.LLd  
    Change in Focus                :       0.000000                            0.000000 6S;-fj  
    Irregularity of surface 3 in fringes #'qEm=%  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 hJ+;N  
    Change in Focus                :       0.000000                            0.000000 8?lp:kM  
    Index tolerance on surface 1 %n3lm(-0U  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ; 7`y##  
    Change in Focus                :       0.000000                            0.000000 6$}hb|j  
    Index tolerance on surface 2 'g8~uP  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 A;t6duBDf/  
    Change in Focus                :       0.000000                           -0.000000 @ (UacFO  
     )"im|9  
    Worst offenders: 7Ca+Pe}/n,  
    Type                      Value      Criterion        Change !H`! KBW  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 #6[7q6{ 4  
    TSTY   2             0.20000000     0.35349910    -0.19053324 !N4?>[E  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 H0Q.; !^  
    TSTX   2             0.20000000     0.35349910    -0.19053324 QMGMXa   
    TSTY   1            -0.20000000     0.42678383    -0.11724851 1D42+cy  
    TSTY   1             0.20000000     0.42678383    -0.11724851 'J&&F2O%  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 t7rz]EN  
    TSTX   1             0.20000000     0.42678383    -0.11724851 5I!EsW$sY  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 0ciPH:V  
    TSTY   3             0.20000000     0.42861670    -0.11541563 E6iUa'  
    OPp>z0p%6X  
    Estimated Performance Changes based upon Root-Sum-Square method: Fm@G@W7,m  
    Nominal MTF                 :     0.54403234 {L[n\h.4.  
    Estimated change            :    -0.36299231 MtYi8"+<e.  
    Estimated MTF               :     0.18104003 Rc2|o.'y  
    |OXufV?I  
    Compensator Statistics: RO-ABFEi(  
    Change in back focus: 0jY#,t?>  
    Minimum            :        -0.000000 26fbBt8nP  
    Maximum            :         0.000000 #`tn:cP  
    Mean               :        -0.000000 O]OZt,k(  
    Standard Deviation :         0.000000 H7 acT  
    E>j*m}b  
    Monte Carlo Analysis: \;w+_<zE5{  
    Number of trials: 20 .".xNHR#  
    'Ldlo+*|5  
    Initial Statistics: Normal Distribution \de82 4  
    ZyBNo]  
      Trial       Criterion        Change 2QUZAV\ Y  
          1     0.42804416    -0.11598818 iyw "|+  
    Change in Focus                :      -0.400171 Is~bA_- ;  
          2     0.54384387    -0.00018847 @\,WJmW  
    Change in Focus                :       1.018470 q' };.tv  
          3     0.44510003    -0.09893230 d($f8{~W  
    Change in Focus                :      -0.601922 ='1J&w~7  
          4     0.18154684    -0.36248550 4qtjP8Zv[  
    Change in Focus                :       0.920681 zbt>5S_  
          5     0.28665820    -0.25737414 -ec ~~95  
    Change in Focus                :       1.253875 r>N5 ^  
          6     0.21263372    -0.33139862 tcYbM+4e  
    Change in Focus                :      -0.903878 Xp <RG p7E  
          7     0.40051424    -0.14351809 a9 =,P  
    Change in Focus                :      -1.354815 ;H5H7ezV  
          8     0.48754161    -0.05649072 30 Vv Zb  
    Change in Focus                :       0.215922 ^ q]BCOfJ(  
          9     0.40357468    -0.14045766 V#;6 <H"  
    Change in Focus                :       0.281783 h>,yqiY4p  
         10     0.26315315    -0.28087919 4&IBNc,sn  
    Change in Focus                :      -1.048393 Cj?X+#J/@d  
         11     0.26120585    -0.28282649 \>NjeMuWU  
    Change in Focus                :       1.017611 |t^7L )&y  
         12     0.24033815    -0.30369419 Sr)rKc  
    Change in Focus                :      -0.109292 y0vo-)E]-]  
         13     0.37164046    -0.17239188 Km2ppGLNn  
    Change in Focus                :      -0.692430 K8y/U(@|D  
         14     0.48597489    -0.05805744 hETTD%  
    Change in Focus                :      -0.662040 eiB5 8b3  
         15     0.21462327    -0.32940907 T"Ph@I<  
    Change in Focus                :       1.611296 g+gHIb7{  
         16     0.43378226    -0.11025008 _K{hq<g  
    Change in Focus                :      -0.640081 *V(TNLIh;  
         17     0.39321881    -0.15081353 '`^<*;w  
    Change in Focus                :       0.914906 iivuH2/~?[  
         18     0.20692530    -0.33710703 T_CYSS|fX  
    Change in Focus                :       0.801607 $FEG0&  
         19     0.51374068    -0.03029165 PdG:aGQ>  
    Change in Focus                :       0.947293 kQXtO)  
         20     0.38013374    -0.16389860 BgLK}p^  
    Change in Focus                :       0.667010 ^y"Rdv  
    L_uliBn  
    Number of traceable Monte Carlo files generated: 20  gc@,lNmi  
    g:MpN^l  
    Nominal     0.54403234 .3k"1I '\  
    Best        0.54384387    Trial     2 kBd #=J  
    Worst       0.18154684    Trial     4 9aT#7B  
    Mean        0.35770970 jJ-j   
    Std Dev     0.11156454 {,p<!Jq~G  
    /7X:=~m  
    IGs!SXclCs  
    Compensator Statistics: 7>`QX%  
    Change in back focus: B3uv>\  
    Minimum            :        -1.354815 N?0T3-/K  
    Maximum            :         1.611296 P X ?!R4S  
    Mean               :         0.161872 GbG!vo  
    Standard Deviation :         0.869664 ?g2Wu0<  
    6&7#?/Lq  
    90% >       0.20977951               SLRQ3<0W_  
    80% >       0.22748071               w~sr2;rp<  
    50% >       0.38667627                lTsl=  
    20% >       0.46553746               y8jk9Tv  
    10% >       0.50064115                >_h*N H  
    {4tJT25  
    End of Run. *,!6#Z7  
    cMxTv4|wui  
    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 *b9=&:pU(  
    s)W^P4<  
    */ZrZ^?o  
    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 n?vrsqmZ  
    iO4YZ!  
    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                 Va>~7  
    80% >       0.22748071                 6hQ?MYX  
    50% >       0.38667627                 &wr0HrE\  
    20% >       0.46553746                 IGEs1  
    10% >       0.50064115 vK z/-9im  
    8.bIP ju%v  
    最后这个数值是MTF值呢，还是MTF的公差？ &=y)C/u  
    8V@ /h6-e,  
    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？？？   7<DlA>(oUX  
    h-<2N)>!  
    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  : 'o41)p  
    90% >       0.20977951                 c!n\?lB  
    80% >       0.22748071                 \!D<u'n  
    50% >       0.38667627                 ghtvAG  
    20% >       0.46553746                 6Ap-J~4  
    10% >       0.50064115 8{QN$Qkn  
    ....... >S\D+1PV  
    '*K}$+l  
    "SGq$3D  
    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   QnHb*4<  
    Mode                : Sensitivities vRp#bScc  
    Sampling            : 2 ,|:TML  
    Nominal Criterion   : 0.54403234 l-?B1gd,l  
    Test Wavelength     : 0.6328 :2+,?#W  
    !h\>[O  
    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？ OAlV7cfD  
    &`]Lg?J  
    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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