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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 )yUSuK(Vu  
    g}$B4_sY  
    C(n_*8{  
    cnB:bQQK8  
    然后添加了默认公差分析,基本没变 7{p6&xXx  
    HL%|DCo  
    ^00C"58A  
    `#?]g!  
    然后运行分析的结果如下: O? 0`QMY  
    :{%~L4$HI  
    Analysis of Tolerances R|[gEavFl  
    Ge1"+:tbJ  
    File : E:\光学设计资料\zemax练习\f500.ZMX Hb\['VhzM  
    Title: :"gu=u!  
    Date : TUE JUN 21 2011 %7 $X *  
    >,x``-  
    Units are Millimeters. \?vn0;R4  
    All changes are computed using linear differences. f@0Km^aUc  
    5=Il2  
    Paraxial Focus compensation only. XA\wZV |{  
    Bh;N:{&^Eu  
    WARNING: Solves should be removed prior to tolerancing. C);I[H4Yfw  
    7n7UL0Oc1  
    Mnemonics: 2E0oLl[  
    TFRN: Tolerance on curvature in fringes. uOPLJ?%  
    TTHI: Tolerance on thickness. uQg&]bSv  
    TSDX: Tolerance on surface decentering in x. yT[)V[}  
    TSDY: Tolerance on surface decentering in y. IU\h,Ug  
    TSTX: Tolerance on surface tilt in x (degrees). ~0rvrDDg  
    TSTY: Tolerance on surface tilt in y (degrees). MH=Ld=i  
    TIRR: Tolerance on irregularity (fringes). 9yp'-RKjw  
    TIND: Tolerance on Nd index of refraction. JZ/T:Hsh4  
    TEDX: Tolerance on element decentering in x. d(C5i8d  
    TEDY: Tolerance on element decentering in y. '^(qlCI  
    TETX: Tolerance on element tilt in x (degrees). hfpis==  
    TETY: Tolerance on element tilt in y (degrees). W4=A.2[q  
    @zT2!C?^L  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. >3&9Wbv>  
    %II o  
    WARNING: Boundary constraints on compensators will be ignored. D&1(qi=x&  
    ;&XC*R+  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm w,LB  
    Mode                : Sensitivities n$<n Yr`X  
    Sampling            : 2 k0,]2R  
    Nominal Criterion   : 0.54403234 ZUS06# t}  
    Test Wavelength     : 0.6328 *9 (E0"  
    *mn"G K6  
    Gm=e;X;r  
    Fields: XY Symmetric Angle in degrees 8Fv4\dr  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY !UHX? <3r  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 t c{Qd&"(  
    eg"A?S  
    Sensitivity Analysis: sLf~o" yb  
    fDAT#nlyp  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| X?Or.  
    Type                      Value      Criterion        Change          Value      Criterion        Change ,,G'Zur7  
    Fringe tolerance on surface 1 oo|Nu+  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 5:%`&B\  
    Change in Focus                :      -0.000000                            0.000000 Px&)kEQ  
    Fringe tolerance on surface 2 fzUG1|$e  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 fYlqaO4[  
    Change in Focus                :       0.000000                            0.000000 b1yS1i D  
    Fringe tolerance on surface 3 `E |>K\  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 k=9k4l  
    Change in Focus                :      -0.000000                            0.000000 L$ZsNs+  
    Thickness tolerance on surface 1 \zhCGDm1_  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 68~5Dx  
    Change in Focus                :       0.000000                            0.000000 Pb<6-Jc[  
    Thickness tolerance on surface 2 e^UUR-K%  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 py6O\` \  
    Change in Focus                :       0.000000                           -0.000000 5m\)82s  
    Decenter X tolerance on surfaces 1 through 3 z pg512\y  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 M,we,!B0  
    Change in Focus                :       0.000000                            0.000000 rVwW%&  
    Decenter Y tolerance on surfaces 1 through 3 A @e!~  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 j|@8VxZ  
    Change in Focus                :       0.000000                            0.000000 )lP(is FP  
    Tilt X tolerance on surfaces 1 through 3 (degrees) NT{ 'BJ  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 g`4WisL1n  
    Change in Focus                :       0.000000                            0.000000 |][PbN D  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) I(<Trn  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 L;fz7?_j  
    Change in Focus                :       0.000000                            0.000000 Z8Tb43?  
    Decenter X tolerance on surface 1 ;8w CQ  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 DPfN*a-P(  
    Change in Focus                :       0.000000                            0.000000 y:k7eE"  
    Decenter Y tolerance on surface 1 O6ltGtF  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 9H2mA$2jnE  
    Change in Focus                :       0.000000                            0.000000 r9p ((ir  
    Tilt X tolerance on surface (degrees) 1 79B+8= K  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 QT4vjz+|  
    Change in Focus                :       0.000000                            0.000000 ?gCP"~  
    Tilt Y tolerance on surface (degrees) 1  p4P"U  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 .g_^! t  
    Change in Focus                :       0.000000                            0.000000 Gz2\&rmN  
    Decenter X tolerance on surface 2 HcpAp]L)  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807  SPnW8  
    Change in Focus                :       0.000000                            0.000000 **c"}S6:mC  
    Decenter Y tolerance on surface 2 CHDt^(oa!B  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 zuF]E+  
    Change in Focus                :       0.000000                            0.000000 sTvw@o *  
    Tilt X tolerance on surface (degrees) 2 i]& >+R<6  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ;8cTy8  
    Change in Focus                :       0.000000                            0.000000 f||S?ns_  
    Tilt Y tolerance on surface (degrees) 2 Th4}$)yrkN  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 sHQO*[[  
    Change in Focus                :       0.000000                            0.000000 KK4rVb:-  
    Decenter X tolerance on surface 3 tO3#kV\,  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 .-1'#Z1T  
    Change in Focus                :       0.000000                            0.000000 Gsy'':u  
    Decenter Y tolerance on surface 3 c=re(  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 lInf,Q7W  
    Change in Focus                :       0.000000                            0.000000 o bGvd6\  
    Tilt X tolerance on surface (degrees) 3 9ZDbZc  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 azG"Mt |7Z  
    Change in Focus                :       0.000000                            0.000000 J 2k4k  
    Tilt Y tolerance on surface (degrees) 3 gI/(hp3ob  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 34L1Gxf  
    Change in Focus                :       0.000000                            0.000000 QFFFxaeJg  
    Irregularity of surface 1 in fringes j%gle%_  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 +5GPU 9k  
    Change in Focus                :       0.000000                            0.000000 b`;Cm)@X!)  
    Irregularity of surface 2 in fringes bpa'`sf  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 k{bC3)'$#R  
    Change in Focus                :       0.000000                            0.000000 hJ75(I *j  
    Irregularity of surface 3 in fringes M3eFG@,  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 h r6?9RJY  
    Change in Focus                :       0.000000                            0.000000 u R]8ZT")  
    Index tolerance on surface 1 FJFO0Hb6  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 PgsG*5WQ  
    Change in Focus                :       0.000000                            0.000000 (~fv;}}v  
    Index tolerance on surface 2 wGWv<<Qw"  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 z Ece>=C  
    Change in Focus                :       0.000000                           -0.000000 sAnb   
    t(}g;O-  
    Worst offenders: ~VV$wU!A  
    Type                      Value      Criterion        Change |Z8Eu0RSb  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 c7nbHJi  
    TSTY   2             0.20000000     0.35349910    -0.19053324  vSo1WS  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 2"WP>>b80  
    TSTX   2             0.20000000     0.35349910    -0.19053324 ,x?Jrcx~'C  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 Kd*=-  
    TSTY   1             0.20000000     0.42678383    -0.11724851 1/%5pb2\  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 vi` VK&+r  
    TSTX   1             0.20000000     0.42678383    -0.11724851 +K ,T^<F;  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 D-e?;<  
    TSTY   3             0.20000000     0.42861670    -0.11541563 N|/gwcKe  
    _/YM@%d  
    Estimated Performance Changes based upon Root-Sum-Square method: c GyBml1  
    Nominal MTF                 :     0.54403234 Lz!H@)-mr  
    Estimated change            :    -0.36299231 )"_&CYnd  
    Estimated MTF               :     0.18104003 gL`aLg_  
    z`,dEGfh^  
    Compensator Statistics: lUw=YM  
    Change in back focus: V`G^Jyj  
    Minimum            :        -0.000000 ^?|d< J:{  
    Maximum            :         0.000000 &ViK9  
    Mean               :        -0.000000 g!Ui|]BI9  
    Standard Deviation :         0.000000 2 ]n4)vv,  
    ZuKOscVS#T  
    Monte Carlo Analysis: d+"F(R9  
    Number of trials: 20 5Ha(i [d  
    ,[3}t%Da  
    Initial Statistics: Normal Distribution 6q,CEm  
    <v?2p{U%  
      Trial       Criterion        Change <4CqG4}Y  
          1     0.42804416    -0.11598818 +W8kMuM!  
    Change in Focus                :      -0.400171 +wZ|g6vMct  
          2     0.54384387    -0.00018847 bD?gwhAKA  
    Change in Focus                :       1.018470 (0Jr<16si$  
          3     0.44510003    -0.09893230 X_)x Fg'k  
    Change in Focus                :      -0.601922 R7c42L\QA  
          4     0.18154684    -0.36248550 :_Iz( 2hV  
    Change in Focus                :       0.920681 Ml/K~H tN  
          5     0.28665820    -0.25737414 <RcB: h  
    Change in Focus                :       1.253875 s+^1\  
          6     0.21263372    -0.33139862 Ox@$ }  
    Change in Focus                :      -0.903878 E+ /XKF  
          7     0.40051424    -0.14351809 # wyjb:Ql  
    Change in Focus                :      -1.354815 W,:j >v g  
          8     0.48754161    -0.05649072 zoBp02j  
    Change in Focus                :       0.215922 O2xqNQ`d  
          9     0.40357468    -0.14045766 *%%n9T  
    Change in Focus                :       0.281783 R _2#7Xs  
         10     0.26315315    -0.28087919 m8INgzVTC  
    Change in Focus                :      -1.048393 iF_u/#  
         11     0.26120585    -0.28282649 {fY(zHC  
    Change in Focus                :       1.017611 5@n|uJA  
         12     0.24033815    -0.30369419 U !%IC7@  
    Change in Focus                :      -0.109292 IDdu2HNu  
         13     0.37164046    -0.17239188 +~7[T/v+n  
    Change in Focus                :      -0.692430 9f CU+s  
         14     0.48597489    -0.05805744 Z{2QDjAI;  
    Change in Focus                :      -0.662040 /=QsZ,~xo  
         15     0.21462327    -0.32940907 3h6,x0AG  
    Change in Focus                :       1.611296 w9Nk8OsL  
         16     0.43378226    -0.11025008 @Ph'!  
    Change in Focus                :      -0.640081 -6^Ee?"  
         17     0.39321881    -0.15081353 gx2v(1?S  
    Change in Focus                :       0.914906 CY"i|s  
         18     0.20692530    -0.33710703 &E@mCQ1  
    Change in Focus                :       0.801607 IvI;Q0E-3  
         19     0.51374068    -0.03029165 `W7;-  
    Change in Focus                :       0.947293 #IeG/t(  
         20     0.38013374    -0.16389860 !:~C/B{  
    Change in Focus                :       0.667010 Kr`.q:0GK  
    F5{GMn;j  
    Number of traceable Monte Carlo files generated: 20 COd~H  
    '=d y =  
    Nominal     0.54403234 `.wgRUhFH;  
    Best        0.54384387    Trial     2 24f N3  
    Worst       0.18154684    Trial     4 8jiBLZkRf  
    Mean        0.35770970 xscR Bx  
    Std Dev     0.11156454 "V,dH%&j  
    ^}kYJvqA  
    ANR611-a  
    Compensator Statistics: Ko "JH=<  
    Change in back focus: 6!){-IV  
    Minimum            :        -1.354815 I,V'J|=j  
    Maximum            :         1.611296 k1LbWR1%wB  
    Mean               :         0.161872 CljEC1S#  
    Standard Deviation :         0.869664 BJqb'H jd  
    !_?HSDAj"n  
    90% >       0.20977951               \P*%u  
    80% >       0.22748071               :4pO/I ~  
    50% >       0.38667627               @Q:?,  
    20% >       0.46553746               UaHN*@  
    10% >       0.50064115                K%SfTA1TCB  
    k;.<DN  
    End of Run. E.yc"|n7l2  
    luz,z( v  
    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 clr]gib  
    $:?=A5ttuo  
    ON"V`_dq+M  
    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 2XeNE[  
    Y1BxRd?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                 @'S !G"\  
    80% >       0.22748071                 m RtE~~p  
    50% >       0.38667627                 a#,lf9M  
    20% >       0.46553746                 7JP.c@s  
    10% >       0.50064115 AFNE1q;{\  
    e1K{*h  
    最后这个数值是MTF值呢,还是MTF的公差? v=+>ids  
    &E!-~'|z  
    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???   k12mxR/  
    i(<do "Am<  
    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  : ~?n)1Vr|  
    90% >       0.20977951                 !jxz2Q  
    80% >       0.22748071                 Awad!_VdHS  
    50% >       0.38667627                 /Hl]$sJY  
    20% >       0.46553746                 P:y M j&)  
    10% >       0.50064115 <<P& MObqj  
    ....... Yxt`Uvc(^h  
    <t0o{}^P*  
    /a$RJ6t&3  
    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   RvF6bIqo  
    Mode                : Sensitivities wV;qc3  
    Sampling            : 2 Y|=/*?o}  
    Nominal Criterion   : 0.54403234 5/v@VUzH  
    Test Wavelength     : 0.6328 `\:9 2+  
    6* /o  
    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? j|&?BBa9  
    [e+"G <>  
    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