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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 l@]Fzl  
    02)Ybp6y  
    'Mhnu2d  
    ?}S!8;d  
    然后添加了默认公差分析,基本没变 T'9M  
    "{3MXAFe  
    $Rn9*OKr  
    OAEa+V  
    然后运行分析的结果如下: prB:E[1  
    7HL23Vr k  
    Analysis of Tolerances }WF6w+  
    XpA|<s  
    File : E:\光学设计资料\zemax练习\f500.ZMX F!2VTPm9z  
    Title: CK_\K,xVT  
    Date : TUE JUN 21 2011 : qV|rih_Q  
    4VkJtu5  
    Units are Millimeters. F5M{`:/  
    All changes are computed using linear differences. ]BTISaL-R  
    =/\l=*  
    Paraxial Focus compensation only. Hq>rK`  
    &4)PW\ioY  
    WARNING: Solves should be removed prior to tolerancing. v+dT7* ^@  
    23opaX5V=  
    Mnemonics: 5bsv05=e  
    TFRN: Tolerance on curvature in fringes. T b*Q4:r"  
    TTHI: Tolerance on thickness. 2uMSeSx$  
    TSDX: Tolerance on surface decentering in x. &ha<pj~  
    TSDY: Tolerance on surface decentering in y. W 9bpKmc  
    TSTX: Tolerance on surface tilt in x (degrees). jO`L:D/C  
    TSTY: Tolerance on surface tilt in y (degrees). E~8J<g E  
    TIRR: Tolerance on irregularity (fringes). KqNsCT+j  
    TIND: Tolerance on Nd index of refraction. g Eq6[G  
    TEDX: Tolerance on element decentering in x. nE :Wl  
    TEDY: Tolerance on element decentering in y. O<XNI(@  
    TETX: Tolerance on element tilt in x (degrees). M?kXzb\O  
    TETY: Tolerance on element tilt in y (degrees). @v.?z2h  
    -Byl~n3*D  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. MW=rX>tE  
    maV*+!\  
    WARNING: Boundary constraints on compensators will be ignored. .e}`n)z  
    \tdYTb.  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Wck WX]};S  
    Mode                : Sensitivities B<~BX [  
    Sampling            : 2 clM6R  
    Nominal Criterion   : 0.54403234 6U]r3 Rr  
    Test Wavelength     : 0.6328 )Rj?\ZUR  
    x7xQrjE  
    ~$7YEs)  
    Fields: XY Symmetric Angle in degrees Cio (Ptt:  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY |voZ0U  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ESe$6)P  
    4 X0ku]  
    Sensitivity Analysis: ,{Z!T5 |  
    /EL3Tt  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| c{jTCkzq  
    Type                      Value      Criterion        Change          Value      Criterion        Change 4=|oOIhgb  
    Fringe tolerance on surface 1 B;Co`o2  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 _G%kEt_4  
    Change in Focus                :      -0.000000                            0.000000 xDmwiVy  
    Fringe tolerance on surface 2 X"T)X#:)  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 )xTu|V   
    Change in Focus                :       0.000000                            0.000000 0X%#9s ~  
    Fringe tolerance on surface 3 p,\(j  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 gNh4c{Al9  
    Change in Focus                :      -0.000000                            0.000000 l585L3i  
    Thickness tolerance on surface 1 xB}B1H%  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 cn'r BY  
    Change in Focus                :       0.000000                            0.000000 *C^TCyBK;  
    Thickness tolerance on surface 2 hr g'Z5n  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 (T",6xBSG  
    Change in Focus                :       0.000000                           -0.000000 >~T2MlRux  
    Decenter X tolerance on surfaces 1 through 3 m\K1Ex  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 >}86#^F  
    Change in Focus                :       0.000000                            0.000000 ?nf4K/IjZ!  
    Decenter Y tolerance on surfaces 1 through 3 %O>_$ 4q  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Angt=q  
    Change in Focus                :       0.000000                            0.000000 m .^WSy  
    Tilt X tolerance on surfaces 1 through 3 (degrees) .?r} 3Ch  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 B> zQ[e@t  
    Change in Focus                :       0.000000                            0.000000 !Eb!y`jK  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) DWU(ld:_  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 IpVtbDW  
    Change in Focus                :       0.000000                            0.000000 ~JOC8dO  
    Decenter X tolerance on surface 1 PB@jh}  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ;GZ'Rb  
    Change in Focus                :       0.000000                            0.000000 A&Cs (e  
    Decenter Y tolerance on surface 1 -nB. .q  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 qnw8#!%I  
    Change in Focus                :       0.000000                            0.000000 ' h|d-p\`9  
    Tilt X tolerance on surface (degrees) 1 JiiYl&#  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 EOf*1/Ih  
    Change in Focus                :       0.000000                            0.000000 t;lK=m|  
    Tilt Y tolerance on surface (degrees) 1  e:6mz\J  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 =5g|7grQ:`  
    Change in Focus                :       0.000000                            0.000000 prVqV-S6TY  
    Decenter X tolerance on surface 2 q}J Eesf  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ,h.hgyt  
    Change in Focus                :       0.000000                            0.000000 /ASpAl[J  
    Decenter Y tolerance on surface 2 3:gF4(.  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 <rNz&;m}  
    Change in Focus                :       0.000000                            0.000000 <&}N[  
    Tilt X tolerance on surface (degrees) 2 qWI8 >my11  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 r5uX?^mJ0  
    Change in Focus                :       0.000000                            0.000000 +< c(;Ucl?  
    Tilt Y tolerance on surface (degrees) 2 IHe?/oUL"b  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 iMp_1EXe  
    Change in Focus                :       0.000000                            0.000000 <*djtO  
    Decenter X tolerance on surface 3 *0%G`Q  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 'zYx4&s  
    Change in Focus                :       0.000000                            0.000000 +\MGlsMK@.  
    Decenter Y tolerance on surface 3 2B]mD-~  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 HO39>:c  
    Change in Focus                :       0.000000                            0.000000 P? LpI`f  
    Tilt X tolerance on surface (degrees) 3 v?S3G-r  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 NKRH>2,  
    Change in Focus                :       0.000000                            0.000000  6Xt c3  
    Tilt Y tolerance on surface (degrees) 3 2QV|NQSl  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 }zHG]k,j  
    Change in Focus                :       0.000000                            0.000000 lf2(h4[1R  
    Irregularity of surface 1 in fringes -2y>X`1Y  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 <VmEXJIk  
    Change in Focus                :       0.000000                            0.000000 [u/Wh+  
    Irregularity of surface 2 in fringes ~01Fp;L/  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 o1u?H4z  
    Change in Focus                :       0.000000                            0.000000 &+8cI^ kp  
    Irregularity of surface 3 in fringes ')j@OO3  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Q E*`#r#e  
    Change in Focus                :       0.000000                            0.000000 <0H^2ekd  
    Index tolerance on surface 1 Na_O :\x#  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 g}*F"k4j  
    Change in Focus                :       0.000000                            0.000000 7.C~ OrGR  
    Index tolerance on surface 2 @Yh%.#\i%  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 jftf]n&Z(q  
    Change in Focus                :       0.000000                           -0.000000 -<aN$O  
    $U}GX'1LZ  
    Worst offenders: EY[J;H_b  
    Type                      Value      Criterion        Change 7bx!A+, t  
    TSTY   2            -0.20000000     0.35349910    -0.19053324  :O{ ZZ  
    TSTY   2             0.20000000     0.35349910    -0.19053324 A$ o?_  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 xX{gm'3UYa  
    TSTX   2             0.20000000     0.35349910    -0.19053324 zgA/B{DaC;  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 psE&Rx3)  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Vw b6QIs  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 NEX{vZkgw  
    TSTX   1             0.20000000     0.42678383    -0.11724851 SFa~j)9'n  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 {~eVZVv  
    TSTY   3             0.20000000     0.42861670    -0.11541563 u6~/" _FwY  
    wm_o(Z}  
    Estimated Performance Changes based upon Root-Sum-Square method: [V.#w|n  
    Nominal MTF                 :     0.54403234 y4N=v{EbL  
    Estimated change            :    -0.36299231 !;;WS~no3  
    Estimated MTF               :     0.18104003 :/FT>UCL  
    ;Fm7!@u^0  
    Compensator Statistics: e'1}5Ky  
    Change in back focus: %P-z3 0FHp  
    Minimum            :        -0.000000 by0M(h  
    Maximum            :         0.000000 0?8{q{ o+  
    Mean               :        -0.000000 eh} {\P  
    Standard Deviation :         0.000000 t5jZ8&M5]  
    8K0@*0  
    Monte Carlo Analysis: e2$k %c~  
    Number of trials: 20 8iwqy0<  
    A>W8^|l6+-  
    Initial Statistics: Normal Distribution tu0agSpU  
    7.`:Z_  
      Trial       Criterion        Change UBve a(z-#  
          1     0.42804416    -0.11598818 *S=zJyAO  
    Change in Focus                :      -0.400171 l<=Y.P_2  
          2     0.54384387    -0.00018847 uP veAK}h  
    Change in Focus                :       1.018470 b)Dzau  
          3     0.44510003    -0.09893230 @`Foy  
    Change in Focus                :      -0.601922 r__Y{&IO  
          4     0.18154684    -0.36248550 V50FX }i  
    Change in Focus                :       0.920681 !`?*zf  
          5     0.28665820    -0.25737414 kA%"-$3  
    Change in Focus                :       1.253875 "]0sR  
          6     0.21263372    -0.33139862 $M 1/74  
    Change in Focus                :      -0.903878 *FrlzIAom  
          7     0.40051424    -0.14351809 XhEd9>#  
    Change in Focus                :      -1.354815 2[R{IV8e  
          8     0.48754161    -0.05649072 U k*HRudt  
    Change in Focus                :       0.215922 XK t">W  
          9     0.40357468    -0.14045766 iN+Tig?c  
    Change in Focus                :       0.281783 S8$kxQg  
         10     0.26315315    -0.28087919 2dUVHu= +  
    Change in Focus                :      -1.048393 rYYAZ(\8  
         11     0.26120585    -0.28282649 |T@\ -8Ok  
    Change in Focus                :       1.017611 C|W\qXCqu  
         12     0.24033815    -0.30369419 TwZASn]o  
    Change in Focus                :      -0.109292  ^q=D!g  
         13     0.37164046    -0.17239188 bhWH  
    Change in Focus                :      -0.692430  iI(7{$y  
         14     0.48597489    -0.05805744 t^zmv PDK  
    Change in Focus                :      -0.662040 x O~t  
         15     0.21462327    -0.32940907 ApxGrCu  
    Change in Focus                :       1.611296 9dFSppM  
         16     0.43378226    -0.11025008 qFD#D_O6  
    Change in Focus                :      -0.640081 ee|i  
         17     0.39321881    -0.15081353 T2^0Q9E?  
    Change in Focus                :       0.914906 N-4k 9l1  
         18     0.20692530    -0.33710703 LCMCpEtY*K  
    Change in Focus                :       0.801607 ,AO]4Ec  
         19     0.51374068    -0.03029165 rG*Zp7{  
    Change in Focus                :       0.947293 U ,wJ8  
         20     0.38013374    -0.16389860 ZH<:YOQ  
    Change in Focus                :       0.667010 7jL3mI;n%;  
    . w_oWmD  
    Number of traceable Monte Carlo files generated: 20 q`8M9-~  
    xbv  
    Nominal     0.54403234 [spJ%AhV  
    Best        0.54384387    Trial     2 5 UQbd8  
    Worst       0.18154684    Trial     4 u'BuZF  
    Mean        0.35770970 &eHhj9  
    Std Dev     0.11156454 DcQ[zdEz+  
    ZFAi9M  
    "+6:vhP5  
    Compensator Statistics: SXW8p>1Jw  
    Change in back focus: c[~LI<>ic  
    Minimum            :        -1.354815 }Ra'`;D$  
    Maximum            :         1.611296 &(] @L\A  
    Mean               :         0.161872 dMnJ)R  
    Standard Deviation :         0.869664 CAhkv0?8  
    )Uv lEG']  
    90% >       0.20977951               lj4D: >Ov  
    80% >       0.22748071               >K2Md*[P3q  
    50% >       0.38667627               t)*MLg<C  
    20% >       0.46553746               K5fL{2V?  
    10% >       0.50064115                3k J8Wn  
    B4 cm_YGE  
    End of Run. 'F- wC!  
    K38A;=t9  
    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 2$MIA?A"Y  
    PsLMV:O9S  
    H~IN<3ko  
    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 #=G[ ~m\  
    AI|8E8h+D  
    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                 Q]Ymv:M,  
    80% >       0.22748071                 &B</^:  
    50% >       0.38667627                 BrdHTk= Vy  
    20% >       0.46553746                 `kn 'RZR  
    10% >       0.50064115 L"w% ew  
    #bqc}h9  
    最后这个数值是MTF值呢,还是MTF的公差? x:h0/f  
    \,-t]$9  
    也就是说,这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951???   ]}3AP!:  
    CnJrJ>l  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : aR3R,6ec  
    90% >       0.20977951                 -Wp69DP6q  
    80% >       0.22748071                 K4]42#  
    50% >       0.38667627                 +(v<_#wR-  
    20% >       0.46553746                 8db J'  
    10% >       0.50064115 H3$~S '  
    ....... pF)}<<C  
    jwm2ZJW  
    f s8nYgv|Q  
    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   h8IjTd]z{$  
    Mode                : Sensitivities =5NM =K  
    Sampling            : 2 WM& k  
    Nominal Criterion   : 0.54403234 xM ]IU <  
    Test Wavelength     : 0.6328 Q.5C$I  
    k=t\  
    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? {@T8i ^EI  
    "=cWcztiP  
    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?
    离线天地大同
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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