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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 R#~}ZUk2  
    b qB[ vPsI  
    4,9AoK)yp  
    1=#r$H  
    然后添加了默认公差分析,基本没变 V5rnI\:7  
    T Uhp  
    U[d/ `  
    A(_AOoA'  
    然后运行分析的结果如下: a#H=dIj  
    [e)81yZG>  
    Analysis of Tolerances d;S:<]l'  
    Ga f/0/|  
    File : E:\光学设计资料\zemax练习\f500.ZMX $o\p["DP  
    Title: F$r8 hj`  
    Date : TUE JUN 21 2011 /og}e~q  
    wI>JOV7  
    Units are Millimeters. XBhWj\`(T  
    All changes are computed using linear differences. &ukNzV}VW  
    )$q<"t\#P#  
    Paraxial Focus compensation only. V.WfP*~NJ  
    7qE V5!  
    WARNING: Solves should be removed prior to tolerancing. `Q26Dk  
    f<SSg* A;  
    Mnemonics: mXc/sh")X  
    TFRN: Tolerance on curvature in fringes. )I]E%ut{4,  
    TTHI: Tolerance on thickness. +lJuF/sS8m  
    TSDX: Tolerance on surface decentering in x. rQ}4\PTi  
    TSDY: Tolerance on surface decentering in y. 1ISA^< M  
    TSTX: Tolerance on surface tilt in x (degrees). SUD]Wl7G`r  
    TSTY: Tolerance on surface tilt in y (degrees). N(vbo  
    TIRR: Tolerance on irregularity (fringes). XeDU ,  
    TIND: Tolerance on Nd index of refraction. :Tuy]]k  
    TEDX: Tolerance on element decentering in x. (/YC\x?  
    TEDY: Tolerance on element decentering in y. `H$s -PX  
    TETX: Tolerance on element tilt in x (degrees). d\;M F  
    TETY: Tolerance on element tilt in y (degrees). 3JW9G04.  
    8e\a_R*(|  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 5YS`v#+  
     p<*-B  
    WARNING: Boundary constraints on compensators will be ignored. &8"a7$  
    V EY!0PIj  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm _Fl]zs<  
    Mode                : Sensitivities #*S/Sh?Q  
    Sampling            : 2 RB/[(4  
    Nominal Criterion   : 0.54403234 CyG@  
    Test Wavelength     : 0.6328 4L!{U@ '  
    Jr17pu(t  
    aS~k.^N  
    Fields: XY Symmetric Angle in degrees $#R.+B  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY &tMvs<q,  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 mf}?z21vD  
    F!]UaEmV  
    Sensitivity Analysis: [-6j4D  
    +Yi=W o/  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| q<c).4  
    Type                      Value      Criterion        Change          Value      Criterion        Change 7h&xfrSrD  
    Fringe tolerance on surface 1 Br#]FB|tD  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 =m}{g/Bk  
    Change in Focus                :      -0.000000                            0.000000 hNx`=D9[7  
    Fringe tolerance on surface 2 *otJtEI>6  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 PtgUo,P  
    Change in Focus                :       0.000000                            0.000000 &}T`[ d_Z  
    Fringe tolerance on surface 3 sK?[ 1BI  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 A1Q]KS@  
    Change in Focus                :      -0.000000                            0.000000 CKh-+8j  
    Thickness tolerance on surface 1  )_j.0a  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 &<_sXHg<x  
    Change in Focus                :       0.000000                            0.000000 <R3S{ ty  
    Thickness tolerance on surface 2 "#4PU5.  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 O')Ivm,E  
    Change in Focus                :       0.000000                           -0.000000 @.0jC=!l  
    Decenter X tolerance on surfaces 1 through 3 uaU!V4-  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ]-* }-j`  
    Change in Focus                :       0.000000                            0.000000 ?Fi-,4  
    Decenter Y tolerance on surfaces 1 through 3 SF.,sCk  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 {ReAl_Cm  
    Change in Focus                :       0.000000                            0.000000 ORtl~V'  
    Tilt X tolerance on surfaces 1 through 3 (degrees) uL-i>!"L!}  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 vO0ql  
    Change in Focus                :       0.000000                            0.000000 tAc;O[L  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) Q 5@~0  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "r"Y9KODm  
    Change in Focus                :       0.000000                            0.000000 kdmVHiGF  
    Decenter X tolerance on surface 1 2o\\qEYg  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 3I"&Qp%2  
    Change in Focus                :       0.000000                            0.000000 J puW !I  
    Decenter Y tolerance on surface 1 0A1l"$_|  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 8<]> q  
    Change in Focus                :       0.000000                            0.000000 E0)v;yRcw  
    Tilt X tolerance on surface (degrees) 1 M/1Q/;0P  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 L\-T[w),z7  
    Change in Focus                :       0.000000                            0.000000 ~(%G; fZ?x  
    Tilt Y tolerance on surface (degrees) 1  bM-Y4[  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 k*-+@U"+  
    Change in Focus                :       0.000000                            0.000000 ?<nz2 piP,  
    Decenter X tolerance on surface 2 }>Os@]*'^(  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 KO5Q;H  
    Change in Focus                :       0.000000                            0.000000 D J<c  
    Decenter Y tolerance on surface 2 'm2,7]  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 cA/2,i  
    Change in Focus                :       0.000000                            0.000000 c89RuI `B~  
    Tilt X tolerance on surface (degrees) 2 $iP#8La:Y  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 *g=*}2  
    Change in Focus                :       0.000000                            0.000000 MI@ RdXkY  
    Tilt Y tolerance on surface (degrees) 2 ^ MddfBwk  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 $~:hv7%  
    Change in Focus                :       0.000000                            0.000000 Ft>ixn  
    Decenter X tolerance on surface 3 G+%ZN  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 k"sL.}$  
    Change in Focus                :       0.000000                            0.000000 EI_J7J+  
    Decenter Y tolerance on surface 3 Q`//HOM,  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 _X]?  
    Change in Focus                :       0.000000                            0.000000 ,U2D &{@  
    Tilt X tolerance on surface (degrees) 3 94a _ W9  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ZDVaKDqZ_  
    Change in Focus                :       0.000000                            0.000000 hqBwA1](a  
    Tilt Y tolerance on surface (degrees) 3 1i>)@{P&BN  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 BryMq !  
    Change in Focus                :       0.000000                            0.000000 ?&X6VNbU  
    Irregularity of surface 1 in fringes V!Joh5=a  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 "^trHh8=  
    Change in Focus                :       0.000000                            0.000000 ]Ny]Ox<  
    Irregularity of surface 2 in fringes FcWu#}.p}  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 qkBnEPWZy  
    Change in Focus                :       0.000000                            0.000000 F_21`Hj  
    Irregularity of surface 3 in fringes 6Edqg   
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 19=Dd#Nf  
    Change in Focus                :       0.000000                            0.000000 kh5V&%>?  
    Index tolerance on surface 1 A{c6XQR~z  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 :qT>m  
    Change in Focus                :       0.000000                            0.000000 P,%|(qB  
    Index tolerance on surface 2 PAc~p8S  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 d@l;dos),  
    Change in Focus                :       0.000000                           -0.000000 h5Z\9`f[  
    S\X_!|  
    Worst offenders: 3{c&%F~!  
    Type                      Value      Criterion        Change ~j 4=PT  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 .K93VTzy  
    TSTY   2             0.20000000     0.35349910    -0.19053324 s e1ipn_A  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 au7BqV!uL  
    TSTX   2             0.20000000     0.35349910    -0.19053324 %!=YNm  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 Q3KBG8  
    TSTY   1             0.20000000     0.42678383    -0.11724851 eU12*(  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 /J6CSk  
    TSTX   1             0.20000000     0.42678383    -0.11724851 EP8LJzd"  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 1rKR=To  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ~ACB #D%  
    /;lk.-yU  
    Estimated Performance Changes based upon Root-Sum-Square method: *CG2sAeB  
    Nominal MTF                 :     0.54403234 h\dIp`H  
    Estimated change            :    -0.36299231 bHMlh^{`%  
    Estimated MTF               :     0.18104003 ]I]dwi_g)  
    :{AN@zC0\  
    Compensator Statistics: ~W#f,mf  
    Change in back focus: k]JLk"K  
    Minimum            :        -0.000000 '|cuVxcE55  
    Maximum            :         0.000000 | -R::gm  
    Mean               :        -0.000000 iIT<{m&`  
    Standard Deviation :         0.000000 1dq.UW\  
    v_ J.M]  
    Monte Carlo Analysis: jab]!eY  
    Number of trials: 20 tyDtwV|  
    d-* 9tit  
    Initial Statistics: Normal Distribution _I!Xr!!)a0  
    _+. t7q^  
      Trial       Criterion        Change sDF J  
          1     0.42804416    -0.11598818 63f/-64?7  
    Change in Focus                :      -0.400171 f^]AyU;F:  
          2     0.54384387    -0.00018847 \?g%>D:O;  
    Change in Focus                :       1.018470 %MIu;u FR  
          3     0.44510003    -0.09893230 9@j~1G%^  
    Change in Focus                :      -0.601922 M&K@><6k,k  
          4     0.18154684    -0.36248550 c`>\R<Z ]  
    Change in Focus                :       0.920681 w iq{ Jo#  
          5     0.28665820    -0.25737414 P]TT  
    Change in Focus                :       1.253875 Y!`?q8z$G  
          6     0.21263372    -0.33139862 X XF9oy8  
    Change in Focus                :      -0.903878 4 hj2rK'y  
          7     0.40051424    -0.14351809 |B n=$T]  
    Change in Focus                :      -1.354815 -Z Z$ 1E  
          8     0.48754161    -0.05649072 NqWHR~&  
    Change in Focus                :       0.215922 5A)w.i&V  
          9     0.40357468    -0.14045766 08f~vw"  
    Change in Focus                :       0.281783 kgIWgk%  
         10     0.26315315    -0.28087919 :b>|U"ux  
    Change in Focus                :      -1.048393 !69^ kIi$  
         11     0.26120585    -0.28282649 `~RV  
    Change in Focus                :       1.017611 2 9]8[Z,4  
         12     0.24033815    -0.30369419 9t[278B6  
    Change in Focus                :      -0.109292 N!v@!z9Mu  
         13     0.37164046    -0.17239188 U VLcR  
    Change in Focus                :      -0.692430 {$t*Mb0  
         14     0.48597489    -0.05805744 ^Pf&C0xXv  
    Change in Focus                :      -0.662040 zbR.Lb  
         15     0.21462327    -0.32940907 xo%iL  
    Change in Focus                :       1.611296 =oTYwU  
         16     0.43378226    -0.11025008 H>] z=w~  
    Change in Focus                :      -0.640081 |x4yPYBL  
         17     0.39321881    -0.15081353 t[maUy _A  
    Change in Focus                :       0.914906 c>R(Fs|6  
         18     0.20692530    -0.33710703 ,dp?'_q {  
    Change in Focus                :       0.801607 K8 Y/XEK  
         19     0.51374068    -0.03029165 2%8Y-o?  
    Change in Focus                :       0.947293 IX(yajc[~M  
         20     0.38013374    -0.16389860 I5A^/=bf&  
    Change in Focus                :       0.667010 {q)B@#p  
    g?VME]:  
    Number of traceable Monte Carlo files generated: 20 NQJqS?^W&M  
    L,Nr,QC-  
    Nominal     0.54403234 u s0'7|{q  
    Best        0.54384387    Trial     2 5:d2q<x:{  
    Worst       0.18154684    Trial     4 acZHb[w  
    Mean        0.35770970 D5>~'N3b  
    Std Dev     0.11156454 <f6PULm  
    Ak1)  
    WK}+f4tdW[  
    Compensator Statistics: }ELCnN  
    Change in back focus: |BkY"F7m9  
    Minimum            :        -1.354815 ?>8zU;Aj  
    Maximum            :         1.611296 %MJ7u}  
    Mean               :         0.161872 PQ]9xzOg[  
    Standard Deviation :         0.869664 @qDrTH]5  
    `.W;ptZ6  
    90% >       0.20977951               E?mp6R]}%  
    80% >       0.22748071               3R*@m  
    50% >       0.38667627               5r<(Z0  
    20% >       0.46553746               e W)I}z +{  
    10% >       0.50064115                2S6EDXc  
    UK>=y_FYO  
    End of Run. P` F'Nf2U  
    )T5h\ZO`;  
    这就有了些疑问,为什么我选择的补偿器是近轴焦点,而分析结果近轴焦点都不变化??应该是变得。另外最后的蒙特卡洛分析,只有10%的大于0.5(我用的是MTF作为评价方式),可是我设计的MTF如图 m#$za7  
    yTt (fn:;  
    h3EDN:FQ  
    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 _0["J:s9  
    j~H`*R=ld#  
    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                 ^=Ct Aa2  
    80% >       0.22748071                 L sDzV)  
    50% >       0.38667627                 NZC='3Uz  
    20% >       0.46553746                 iynS4]`U  
    10% >       0.50064115 {/A)t1nL  
    sMS9!{A  
    最后这个数值是MTF值呢,还是MTF的公差? L^Q+Q)zTh  
    hY= s9\  
    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???   ?hJsN  
    Ym.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  : R3B5-^s  
    90% >       0.20977951                 0'yG1qG  
    80% >       0.22748071                 mUrS &&fu8  
    50% >       0.38667627                 ka5#<J7<p  
    20% >       0.46553746                 5)d,G9  
    10% >       0.50064115 1V|< A  
    ....... &'5@azU  
    ]aC ':55(  
    @<D'-mMt  
    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   7?6xPKQ)H  
    Mode                : Sensitivities Gw ~{V  
    Sampling            : 2 = EQN-{#  
    Nominal Criterion   : 0.54403234 )KSisEL  
    Test Wavelength     : 0.6328 .S~@BI(|<  
    DMF?5GX  
    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? To3^L_v"  
    WMW1B }Z3  
    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