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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 } !y5hv!_  
    !?=U{^|7y  
    hidQOh  
    ,[)l>!0\H  
    然后添加了默认公差分析,基本没变  uxB`  
    Fk^N7EJ:$  
    4QTHBT+2`  
    gKQV99  
    然后运行分析的结果如下: {M5t)-  
    |<5F08]v  
    Analysis of Tolerances qR_>41JU"  
    *3r s+0  
    File : E:\光学设计资料\zemax练习\f500.ZMX O1S7t)ag  
    Title: ts9wSx~[+  
    Date : TUE JUN 21 2011 tW/g0lC%  
    Fx|`0 LI+C  
    Units are Millimeters. IWq#W(yM  
    All changes are computed using linear differences. m\X\Xp~A  
    J=t}9.H~=  
    Paraxial Focus compensation only.  @O koT:  
    %,~?;JAj  
    WARNING: Solves should be removed prior to tolerancing. G}9f/$'3  
    w"wW0uE^  
    Mnemonics: &9fQW?Czs  
    TFRN: Tolerance on curvature in fringes. /s} "0/Y\  
    TTHI: Tolerance on thickness. [ 'lu;1-,  
    TSDX: Tolerance on surface decentering in x. }Sbk qd5  
    TSDY: Tolerance on surface decentering in y. HE%/+mZN  
    TSTX: Tolerance on surface tilt in x (degrees). WFh.oe8  
    TSTY: Tolerance on surface tilt in y (degrees). sQac%.H;`U  
    TIRR: Tolerance on irregularity (fringes). FK593z  
    TIND: Tolerance on Nd index of refraction. N)G HQlgH  
    TEDX: Tolerance on element decentering in x. ao"2kqa)r  
    TEDY: Tolerance on element decentering in y. U/^#nU.,  
    TETX: Tolerance on element tilt in x (degrees). rpK&OR/  
    TETY: Tolerance on element tilt in y (degrees). ; Byt'S  
    tP7<WGHd/  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. PPr Pj^%z=  
    #Uu,yHMv:;  
    WARNING: Boundary constraints on compensators will be ignored. L_RVHvA=M/  
    bo/9k 4N3  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm T7.Iqw3p  
    Mode                : Sensitivities {0Y6jk>I  
    Sampling            : 2 Q_|}~4_+  
    Nominal Criterion   : 0.54403234 h_[{-WC  
    Test Wavelength     : 0.6328 d#a/J.Z$A  
    d \l{tmte  
    hdH z", )  
    Fields: XY Symmetric Angle in degrees q.`< q  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ~TEn +  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 Y?NL|cW4  
    H3<tsK=:  
    Sensitivity Analysis: P:4"~ ]}  
    5@m ,*n&[  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| LhbdvJAk@  
    Type                      Value      Criterion        Change          Value      Criterion        Change Sv{n?BYq  
    Fringe tolerance on surface 1 J<QZ)<T,&  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 $jg[6`L$  
    Change in Focus                :      -0.000000                            0.000000 w\o6G7  
    Fringe tolerance on surface 2 jJ$B^Y"4  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 _d5:Y  
    Change in Focus                :       0.000000                            0.000000 RI&O@?+U  
    Fringe tolerance on surface 3 J W@6m  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 X]p3?"7  
    Change in Focus                :      -0.000000                            0.000000 Fm0d0j  
    Thickness tolerance on surface 1 5 ix*wu`,  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 PJC(:R(j  
    Change in Focus                :       0.000000                            0.000000 BZ?3=S1*  
    Thickness tolerance on surface 2 4k<o  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Op ar+|p\  
    Change in Focus                :       0.000000                           -0.000000 DOKe.k  
    Decenter X tolerance on surfaces 1 through 3 M/=36{,w-  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 1"ZtE\{ "  
    Change in Focus                :       0.000000                            0.000000 5MB`yRVv  
    Decenter Y tolerance on surfaces 1 through 3 )bOfs*S  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 9f( X7kt  
    Change in Focus                :       0.000000                            0.000000 [g/D<g5O  
    Tilt X tolerance on surfaces 1 through 3 (degrees) MONX&$  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Wn(!6yid  
    Change in Focus                :       0.000000                            0.000000 5p[}<I{  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) z}!g2d  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Bdw33z*m  
    Change in Focus                :       0.000000                            0.000000 #XDgvX >  
    Decenter X tolerance on surface 1 !Zj ]0,^  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 g8##Be  
    Change in Focus                :       0.000000                            0.000000 I/Vw2  
    Decenter Y tolerance on surface 1 [ ulub|  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 PR.3EL  
    Change in Focus                :       0.000000                            0.000000 UPuoIfuqI  
    Tilt X tolerance on surface (degrees) 1 3 }fOb  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 mZR3Hl$  
    Change in Focus                :       0.000000                            0.000000 6WY/[TC-  
    Tilt Y tolerance on surface (degrees) 1 f$xXR$mjf  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 wsWFD xR  
    Change in Focus                :       0.000000                            0.000000 5CFNBb%Xy  
    Decenter X tolerance on surface 2 p"ytt|H  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 O:wG/et  
    Change in Focus                :       0.000000                            0.000000 k."p&  
    Decenter Y tolerance on surface 2 )@N d3Z  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 13X}pnW  
    Change in Focus                :       0.000000                            0.000000 H{*D c_  
    Tilt X tolerance on surface (degrees) 2 Lb/GL\J)  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Jbu2y'zE  
    Change in Focus                :       0.000000                            0.000000 4b2d(x)0X  
    Tilt Y tolerance on surface (degrees) 2 N y'\Q"Y]  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 B}iEhWO6  
    Change in Focus                :       0.000000                            0.000000 %qoS(iO`h  
    Decenter X tolerance on surface 3 |"gL {De  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 0kkDlWkzo  
    Change in Focus                :       0.000000                            0.000000 p'K`K\X  
    Decenter Y tolerance on surface 3 j<p.#jkT  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 bC<W7qf]}  
    Change in Focus                :       0.000000                            0.000000 D@bGJc0  
    Tilt X tolerance on surface (degrees) 3 32YbBGDN!f  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Tlw'05\{J  
    Change in Focus                :       0.000000                            0.000000 Du+W7]yCl  
    Tilt Y tolerance on surface (degrees) 3 dkC[SG`  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 p~$cwbQ!  
    Change in Focus                :       0.000000                            0.000000 vgwpuRL5b  
    Irregularity of surface 1 in fringes ;V}:0{p  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 "hsT^sy  
    Change in Focus                :       0.000000                            0.000000 '#'noB;,  
    Irregularity of surface 2 in fringes UT<e/  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 R=z])  
    Change in Focus                :       0.000000                            0.000000 |./mPV r  
    Irregularity of surface 3 in fringes 6zi>Q?] 1  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ')"+ a^c  
    Change in Focus                :       0.000000                            0.000000 za_b jE  
    Index tolerance on surface 1 "n%s>@$  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 U) J5K  
    Change in Focus                :       0.000000                            0.000000 4ijtx)SA  
    Index tolerance on surface 2 J usU5 e|  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 YZol4q|ic  
    Change in Focus                :       0.000000                           -0.000000 /{^k8 Q  
    ORExI.<`W  
    Worst offenders: n Nt28n@  
    Type                      Value      Criterion        Change 80=0S^gEZ  
    TSTY   2            -0.20000000     0.35349910    -0.19053324  &9y Zfp  
    TSTY   2             0.20000000     0.35349910    -0.19053324 jxog8 E  
    TSTX   2            -0.20000000     0.35349910    -0.19053324  1MN!  
    TSTX   2             0.20000000     0.35349910    -0.19053324 3^sbbm.8  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ){;XI2  
    TSTY   1             0.20000000     0.42678383    -0.11724851 $YSXE :  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 y\?ey'o  
    TSTX   1             0.20000000     0.42678383    -0.11724851 g>lZs  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 5'zXCHt  
    TSTY   3             0.20000000     0.42861670    -0.11541563 RzEzNV  
    AC,RS 7  
    Estimated Performance Changes based upon Root-Sum-Square method: or]v]*:~l  
    Nominal MTF                 :     0.54403234 J&xZN8jW   
    Estimated change            :    -0.36299231 Yuv i{ 0  
    Estimated MTF               :     0.18104003 7~7L5PRW  
    2JfSi2T  
    Compensator Statistics: SMN.AJ J  
    Change in back focus: pQz1!0  
    Minimum            :        -0.000000 bZnOX*y]  
    Maximum            :         0.000000 -#v~;Ci  
    Mean               :        -0.000000 B~]Kqp7yU  
    Standard Deviation :         0.000000 }3(!kW  
    XM$ ~HG  
    Monte Carlo Analysis: oZ'a}kF  
    Number of trials: 20 (80m'.X  
     W2vL<  
    Initial Statistics: Normal Distribution gaF6 j!p  
    hG1:E:}  
      Trial       Criterion        Change K`4lL5oH  
          1     0.42804416    -0.11598818 TKDG+`TyZ  
    Change in Focus                :      -0.400171 *6Wiq5M>.  
          2     0.54384387    -0.00018847 {EgSjxfmw  
    Change in Focus                :       1.018470 i^s Vy  
          3     0.44510003    -0.09893230 &uq.k{<p\  
    Change in Focus                :      -0.601922 IKD{3cVL  
          4     0.18154684    -0.36248550 CFtQPTw  
    Change in Focus                :       0.920681 Sc<dxY@w7-  
          5     0.28665820    -0.25737414 DHO]RRGV  
    Change in Focus                :       1.253875 o4Q?K.9c  
          6     0.21263372    -0.33139862 A}9Z%U  
    Change in Focus                :      -0.903878 (5yM%H8:  
          7     0.40051424    -0.14351809 j}+3+ 8D  
    Change in Focus                :      -1.354815 `[/#, *\  
          8     0.48754161    -0.05649072 n$i X6Cd  
    Change in Focus                :       0.215922 tLE8+[ SU  
          9     0.40357468    -0.14045766 0m@+ &X>w  
    Change in Focus                :       0.281783 T+Oqd\05.+  
         10     0.26315315    -0.28087919 ,-UF5U  
    Change in Focus                :      -1.048393 vW+6_41ZM  
         11     0.26120585    -0.28282649 Z\!,f.>g  
    Change in Focus                :       1.017611 g3^s_*A  
         12     0.24033815    -0.30369419 ,.,8-In^  
    Change in Focus                :      -0.109292 _7c3=f83  
         13     0.37164046    -0.17239188 p Cz6[*kC  
    Change in Focus                :      -0.692430 ^z?b6kTC  
         14     0.48597489    -0.05805744 e(c\U}&  
    Change in Focus                :      -0.662040 :qzg?\(  
         15     0.21462327    -0.32940907 R"nB4R0Uh  
    Change in Focus                :       1.611296 h]4xS?6O  
         16     0.43378226    -0.11025008 1T^WMn:U  
    Change in Focus                :      -0.640081 WtM%(8Y[]  
         17     0.39321881    -0.15081353 74%vNKzc~  
    Change in Focus                :       0.914906 k/K)nH@)  
         18     0.20692530    -0.33710703 Eb3ZM#  
    Change in Focus                :       0.801607 jPh<VVQ$@  
         19     0.51374068    -0.03029165 5y#,z`S  
    Change in Focus                :       0.947293 (.J/Ql0Y  
         20     0.38013374    -0.16389860 'E| %l!xO  
    Change in Focus                :       0.667010 "j>X^vn  
    `PWKA;W$0  
    Number of traceable Monte Carlo files generated: 20 .D*Qu}  
    eg[EFI.h  
    Nominal     0.54403234 CK_dEh2c  
    Best        0.54384387    Trial     2 >M<3!?fW)  
    Worst       0.18154684    Trial     4 5P,&VB8L  
    Mean        0.35770970 {##G.n\~  
    Std Dev     0.11156454 is.t,&H4P]  
    Wf~^,]9N  
    g)hEzL0k  
    Compensator Statistics: .:S/x{~  
    Change in back focus: :.:^\Q0  
    Minimum            :        -1.354815 ]kj^T?&n.  
    Maximum            :         1.611296 +){^HC\7h  
    Mean               :         0.161872 8Km&3nCv$Q  
    Standard Deviation :         0.869664 !(d] f0  
    G]lGoa}]`u  
    90% >       0.20977951               &V38)83a  
    80% >       0.22748071               !I7$e&Uz@  
    50% >       0.38667627               Ycr3$n]e  
    20% >       0.46553746               ~Ntk -p  
    10% >       0.50064115                F^dJ{<yX  
    +t!]nE #  
    End of Run. y0%@^^-Ru  
    % km <+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 mWviWHK  
    j>k ;Z j  
    (HNc9QVC'W  
    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 @@Ib^sB%  
    *yZ6"  
    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                 -2hirA<^  
    80% >       0.22748071                 6uE20O<z]  
    50% >       0.38667627                 @eYpARF  
    20% >       0.46553746                 &8IBf8  
    10% >       0.50064115 %A zy#m  
    D||0c"E  
    最后这个数值是MTF值呢,还是MTF的公差? 0i~U(qoI  
    6Zi{gx  
    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???   n Bm ]?  
    n/9afIN  
    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  : zYzV!s2^  
    90% >       0.20977951                 C|ZPnm>f30  
    80% >       0.22748071                 =RB {.%  
    50% >       0.38667627                 VWft/2p~  
    20% >       0.46553746                 4l 67B]o  
    10% >       0.50064115 P%2v(  
    ....... Znb={hh  
    zu d_BOq{f  
    S;4:`?s=i  
    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   U}w'/:H  
    Mode                : Sensitivities <K0epED  
    Sampling            : 2 _[HZ[9c!  
    Nominal Criterion   : 0.54403234 KQr+VQdq>  
    Test Wavelength     : 0.6328 Z|t=t"6"  
    I!hh_  
    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? :;_ khno  
    <Z^by;d|z  
    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