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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 |LiFX5!\  
     ,Ad\!  
    9S.R%2xw`  
    uh`~K6&*\w  
    然后添加了默认公差分析,基本没变 a5]~%xdK  
    (#\3XBG  
    Qh?q 0VKU^  
    }# w>>{Q  
    然后运行分析的结果如下: JI@~FD&  
    75I* &Wl  
    Analysis of Tolerances D;d 'ss;  
    tAbIT;>  
    File : E:\光学设计资料\zemax练习\f500.ZMX [sACPn$f  
    Title: ~'v^__8  
    Date : TUE JUN 21 2011 Xqf"Wx(X  
    &hjrJ/'^  
    Units are Millimeters. 5o rA#B  
    All changes are computed using linear differences.  2Np9*[C  
    ls 'QfJm  
    Paraxial Focus compensation only. 3)__b:7J  
    q35%t61Lc  
    WARNING: Solves should be removed prior to tolerancing. [@Uc4LX  
    _S@s  
    Mnemonics: Eu1s  
    TFRN: Tolerance on curvature in fringes. r{p?aG  
    TTHI: Tolerance on thickness. ] M_[*OAb  
    TSDX: Tolerance on surface decentering in x. B~LB^ n(>@  
    TSDY: Tolerance on surface decentering in y. |44CD3A%  
    TSTX: Tolerance on surface tilt in x (degrees). j%~UU0(J  
    TSTY: Tolerance on surface tilt in y (degrees). ^Q2K0'm5  
    TIRR: Tolerance on irregularity (fringes). 7-6_`Q2}Y  
    TIND: Tolerance on Nd index of refraction. @2kt6 W  
    TEDX: Tolerance on element decentering in x. {lx^57v  
    TEDY: Tolerance on element decentering in y. Ca?pK_Y  
    TETX: Tolerance on element tilt in x (degrees). B6OggJ9Iq  
    TETY: Tolerance on element tilt in y (degrees). dKZffDTZ  
    _pjpPSV6J  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. YC*S;q  
    'X@j  
    WARNING: Boundary constraints on compensators will be ignored. l&;#`\s!V  
    RrKs!2sCT  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm AP/tBC eM  
    Mode                : Sensitivities 6i=m1Yk  
    Sampling            : 2 gLd3,$ Ei  
    Nominal Criterion   : 0.54403234  _U#ue  
    Test Wavelength     : 0.6328 @qg=lt|(F  
    &[23DrI8  
    L{<E'#@F  
    Fields: XY Symmetric Angle in degrees vV8 y_  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY EQu M|4$ix  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 n8R{LjJ2@  
    c_HYB/'  
    Sensitivity Analysis: ]5uCs[  
    \T<?=A  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| .VTHZvyn  
    Type                      Value      Criterion        Change          Value      Criterion        Change 1 9;\:tN  
    Fringe tolerance on surface 1 B>|@XfPM  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 V&)-u(s_S/  
    Change in Focus                :      -0.000000                            0.000000 Ql [ =  
    Fringe tolerance on surface 2 'rq [P",  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 J&{E  
    Change in Focus                :       0.000000                            0.000000 nJA\P1@m  
    Fringe tolerance on surface 3 <7?MutHM-  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 k\zNh<^  
    Change in Focus                :      -0.000000                            0.000000 9dSKlB5J  
    Thickness tolerance on surface 1 Rz*%(2Vz  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 v3.JG]zLpP  
    Change in Focus                :       0.000000                            0.000000 ,#D &*  
    Thickness tolerance on surface 2 "mHSbG  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 =;^2#UxXA&  
    Change in Focus                :       0.000000                           -0.000000 .i@e6JE~;  
    Decenter X tolerance on surfaces 1 through 3 ? 0nbvV5v7  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 (MwB% g  
    Change in Focus                :       0.000000                            0.000000 MP0gLi  
    Decenter Y tolerance on surfaces 1 through 3 S :9zz  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 f>l}y->-Ug  
    Change in Focus                :       0.000000                            0.000000 .* V ZY  
    Tilt X tolerance on surfaces 1 through 3 (degrees) & 7JCPw  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 [ V/*{Z  
    Change in Focus                :       0.000000                            0.000000 7lf* vqG  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 4 K)P Yk  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 b^6Ooc/-k  
    Change in Focus                :       0.000000                            0.000000 $6BXoh!  
    Decenter X tolerance on surface 1 Dgp"RUP  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 wGLZzqgq  
    Change in Focus                :       0.000000                            0.000000 v34XcA  
    Decenter Y tolerance on surface 1 9M<qk si  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 }3=]1jH6  
    Change in Focus                :       0.000000                            0.000000 Ol D]*=.cO  
    Tilt X tolerance on surface (degrees) 1 @<AyCaU`.  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 W[w8@OCNf  
    Change in Focus                :       0.000000                            0.000000 ^5j9WV  
    Tilt Y tolerance on surface (degrees) 1 fZT=q^26  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 F0+u#/#  
    Change in Focus                :       0.000000                            0.000000 >$?$&+e}  
    Decenter X tolerance on surface 2 fh}\#WE"  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ?uOdqMJV  
    Change in Focus                :       0.000000                            0.000000 ^'6!)y#  
    Decenter Y tolerance on surface 2 `NyvJt^<  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 U]d{hY."  
    Change in Focus                :       0.000000                            0.000000 r Fdq \BSi  
    Tilt X tolerance on surface (degrees) 2 #R'm|En'  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 gKn"e|A  
    Change in Focus                :       0.000000                            0.000000 [bH6>{3u  
    Tilt Y tolerance on surface (degrees) 2 2c_#q1/Z/  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Ej8EQ% P  
    Change in Focus                :       0.000000                            0.000000 %j{gZTz-  
    Decenter X tolerance on surface 3 :W-"UW,  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 I[@}+p0  
    Change in Focus                :       0.000000                            0.000000 Abd&p N  
    Decenter Y tolerance on surface 3 `=vL?w^QS  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 SA)}---"  
    Change in Focus                :       0.000000                            0.000000 _{C:aIl[2  
    Tilt X tolerance on surface (degrees) 3 Ql3hq.E  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Y!Wz7 C  
    Change in Focus                :       0.000000                            0.000000 j<Lj1 P3  
    Tilt Y tolerance on surface (degrees) 3 x.xfMM2n  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 7M=`Z{=9  
    Change in Focus                :       0.000000                            0.000000 PIsMx-i0  
    Irregularity of surface 1 in fringes : H0+}=  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 o!gl :izb  
    Change in Focus                :       0.000000                            0.000000 ~4`LOROC  
    Irregularity of surface 2 in fringes iRBUX`0  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 _U|s!60'  
    Change in Focus                :       0.000000                            0.000000 p\WW~qD  
    Irregularity of surface 3 in fringes m}'kxZTOm  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 %q`_vtUT  
    Change in Focus                :       0.000000                            0.000000 RxjC sjg  
    Index tolerance on surface 1 @s b\0}  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 q6%jCt2'  
    Change in Focus                :       0.000000                            0.000000 'Oyz/P(p  
    Index tolerance on surface 2 cAC]%~orx  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 k8Qm +r<p  
    Change in Focus                :       0.000000                           -0.000000 v\'E o* 4  
    wm=!tx\`k  
    Worst offenders: 9EIHcUXe  
    Type                      Value      Criterion        Change &CV%+  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 [x kbzJ  
    TSTY   2             0.20000000     0.35349910    -0.19053324 :{E;*v_!v  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 W}50E.\#  
    TSTX   2             0.20000000     0.35349910    -0.19053324 2$V]XSe  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 c0sU1:e0  
    TSTY   1             0.20000000     0.42678383    -0.11724851 #tRLvOR:  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 UpF,e>s  
    TSTX   1             0.20000000     0.42678383    -0.11724851  Cdin"  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ] bz']`  
    TSTY   3             0.20000000     0.42861670    -0.11541563 1(CpTaa  
    D'$ki[{,  
    Estimated Performance Changes based upon Root-Sum-Square method: :,h47'0A  
    Nominal MTF                 :     0.54403234 l&R~ I6^E  
    Estimated change            :    -0.36299231 }Dc0 Y  
    Estimated MTF               :     0.18104003 +[<|TT  
    Fo|6 PoSo  
    Compensator Statistics: ,edX;`#  
    Change in back focus: Uf}s6#   
    Minimum            :        -0.000000 xX.fN7[  
    Maximum            :         0.000000 |JC/A;ZH  
    Mean               :        -0.000000 OlL FuVR  
    Standard Deviation :         0.000000 Mj&q"G  
    s2FJ^4  
    Monte Carlo Analysis: \DI%/(?  
    Number of trials: 20 bS=aFl#  
    JS]6jUB<B  
    Initial Statistics: Normal Distribution ] ?w hx &+  
    Uo>pV 9xRG  
      Trial       Criterion        Change oJE~dY$Q  
          1     0.42804416    -0.11598818 +&6R(7XC  
    Change in Focus                :      -0.400171 > `R}ulz)  
          2     0.54384387    -0.00018847 9*pH[vH  
    Change in Focus                :       1.018470 o?BcpWp  
          3     0.44510003    -0.09893230 &ejJf{id  
    Change in Focus                :      -0.601922 q+<X*yC  
          4     0.18154684    -0.36248550 +F= j1*'&  
    Change in Focus                :       0.920681 u/-u l  
          5     0.28665820    -0.25737414 l*V]54|ON3  
    Change in Focus                :       1.253875 `irz'/"p  
          6     0.21263372    -0.33139862 a NhI<.v  
    Change in Focus                :      -0.903878 xfZ.  
          7     0.40051424    -0.14351809 ByqB4Hv2  
    Change in Focus                :      -1.354815 scZdDbL6+  
          8     0.48754161    -0.05649072 | #Z+s-  
    Change in Focus                :       0.215922 *{5p/}p  
          9     0.40357468    -0.14045766 b9b384Q1O  
    Change in Focus                :       0.281783 kcGs2Y_*&  
         10     0.26315315    -0.28087919 {>$i)B  
    Change in Focus                :      -1.048393 =m]|C1x  
         11     0.26120585    -0.28282649 pxy=edd  
    Change in Focus                :       1.017611 TJjcX?:(  
         12     0.24033815    -0.30369419 //T1e7)  
    Change in Focus                :      -0.109292 E:'TZ4Z  
         13     0.37164046    -0.17239188 ]Y@Db5S$T  
    Change in Focus                :      -0.692430 wq+%O,  
         14     0.48597489    -0.05805744 {/d<Jm:  
    Change in Focus                :      -0.662040 sx7;G^93  
         15     0.21462327    -0.32940907 {8`V5:  
    Change in Focus                :       1.611296 !ZlBM{C  
         16     0.43378226    -0.11025008 6%?bl{pNn  
    Change in Focus                :      -0.640081 l-4+{6lz  
         17     0.39321881    -0.15081353 H&Jp,<\x  
    Change in Focus                :       0.914906 GxjmHo  
         18     0.20692530    -0.33710703 ?XOl>IO  
    Change in Focus                :       0.801607 4B? 8$&b  
         19     0.51374068    -0.03029165 @ )nxX))a  
    Change in Focus                :       0.947293 bWU4lPfP  
         20     0.38013374    -0.16389860 r: Ij\YQ  
    Change in Focus                :       0.667010 O_-Lm4g?4  
    {6}H}_( ]  
    Number of traceable Monte Carlo files generated: 20 P| c[EUT  
    B q/<kEgM  
    Nominal     0.54403234 E$!0h_.(  
    Best        0.54384387    Trial     2 od\-o:bS  
    Worst       0.18154684    Trial     4 W:s`;8iM$  
    Mean        0.35770970 :K J#_y\rt  
    Std Dev     0.11156454 y*ux7KO  
    6jS:_[p  
    /~=W3lhY  
    Compensator Statistics: @q8h'@sX  
    Change in back focus: bp"@vlv  
    Minimum            :        -1.354815 Z|l/6L8  
    Maximum            :         1.611296 e0rh~@E  
    Mean               :         0.161872 _4~'K?  
    Standard Deviation :         0.869664 =Rv!c+?  
    /XEt2,sI9  
    90% >       0.20977951               ?4QX;s7  
    80% >       0.22748071               FZdZGK  
    50% >       0.38667627               R1A|g =kF  
    20% >       0.46553746               u Uy~$>V  
    10% >       0.50064115                Ky:y1\K1^K  
    z _A]mJ  
    End of Run. YC,s]~[[   
    6d%V=1^F  
    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 Xx)PyO  
    5SOl:{A +  
    p>9-Ga  
    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 T-.Q  
    .eZsKc-@  
    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                 @)^|U"  
    80% >       0.22748071                 <F%c"Rkh  
    50% >       0.38667627                 |mS-<e8LY4  
    20% >       0.46553746                 `<oNEr+#  
    10% >       0.50064115 AuW-XK.  
    7kT&}`g.  
    最后这个数值是MTF值呢,还是MTF的公差? &;x*uG  
    lL<LJ :L  
    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???   8mh@C6U  
    q4xP<b^  
    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  : !S}d?8I6  
    90% >       0.20977951                 :\cid]y3  
    80% >       0.22748071                 Lz:Q6  
    50% >       0.38667627                 9?Q0O\&uP  
    20% >       0.46553746                 -Crm#Ib~  
    10% >       0.50064115 Cb i;CF\{  
    ....... i~i ?M)  
    pp1kcrE\M  
    K]H [A,  
    这些数值都是MTF值
    离线天地大同
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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   `-yiVUp1:z  
    Mode                : Sensitivities T_I ApC  
    Sampling            : 2 5XF&yYWq  
    Nominal Criterion   : 0.54403234 ?O.'_YS  
    Test Wavelength     : 0.6328 >)8<d3m  
    w1:%P36H  
    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? ?, oE_H  
    K'zBDrkW-x  
    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
    离线sansummer
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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?
    离线天地大同
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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