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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 EJ{Z0R{{  
    w]]`/`  
    mj5$ 2J  
    uMa: GDh7  
    然后添加了默认公差分析，基本没变 `M/=_O3  
    6} "?eW  
    ;KJJK#j  
    c nvxTI<  
    然后运行分析的结果如下： bcL>S$B  
    m)3?hF)  
    Analysis of Tolerances K:yS24\ %  
    l=D E|:  
    File : E:\光学设计资料\zemax练习\f500.ZMX #S2LQ5U  
    Title: kwNXKn/   
    Date : TUE JUN 21 2011 ^Dhj<_  
    Ntr5Q IPd  
    Units are Millimeters. |t CD@M  
    All changes are computed using linear differences. uW%7X2K  
    !e@G[%k  
    Paraxial Focus compensation only. S!.aBAW  
    v:1l2Y)g  
    WARNING: Solves should be removed prior to tolerancing. cw.Uy(ks|$  
    vb/*ILS  
    Mnemonics: BF8n: }9U  
    TFRN: Tolerance on curvature in fringes. IrQ8t!  
    TTHI: Tolerance on thickness. *V#v6r7<Y/  
    TSDX: Tolerance on surface decentering in x. Fn$/ K  
    TSDY: Tolerance on surface decentering in y. NHA 2 i  
    TSTX: Tolerance on surface tilt in x (degrees). /{YUM~  
    TSTY: Tolerance on surface tilt in y (degrees). zk5sAHQ  
    TIRR: Tolerance on irregularity (fringes). Ug^C}".&  
    TIND: Tolerance on Nd index of refraction. W> .O"Ri  
    TEDX: Tolerance on element decentering in x. 2n+j.  
    TEDY: Tolerance on element decentering in y. piJ/e  
    TETX: Tolerance on element tilt in x (degrees). o O%!P<D  
    TETY: Tolerance on element tilt in y (degrees). X5 lB],t"=  
    zr@Bf!VG:  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. @3wI(l[  
    fOiLb.BW  
    WARNING: Boundary constraints on compensators will be ignored. 8~RUYsg  
    !_E E|#`n  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm L]B]~Tw  
    Mode                : Sensitivities -cyJj LL*  
    Sampling            : 2 _/ j44q  
    Nominal Criterion   : 0.54403234 TFbCJ@X  
    Test Wavelength     : 0.6328 ^!k^=ST1J  
    'j#oMA{0  
    ,]Yjo>`tW  
    Fields: XY Symmetric Angle in degrees 2g-'.w  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Noz+\O\  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 2#_9x7g+  
    ~6U@*Svk  
    Sensitivity Analysis: Wd$N[|  
    .  hHt+  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| &=|W95  
    Type                      Value      Criterion        Change          Value      Criterion        Change ar+mj=m  
    Fringe tolerance on surface 1 #W 1`vke3  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 R*.XbkW~  
    Change in Focus                :      -0.000000                            0.000000 oV ?tp4&  
    Fringe tolerance on surface 2 Jx-^WB  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 COv#dOw  
    Change in Focus                :       0.000000                            0.000000 i051qpj  
    Fringe tolerance on surface 3 JeMhiY}  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 w$A*|^w1  
    Change in Focus                :      -0.000000                            0.000000 5{ #9b^  
    Thickness tolerance on surface 1 FU!U{qDI  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 m#, F%s  
    Change in Focus                :       0.000000                            0.000000 /r@P\_  
    Thickness tolerance on surface 2 eC9~ wc  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Mp75L5  
    Change in Focus                :       0.000000                           -0.000000 Wr`=P,  
    Decenter X tolerance on surfaces 1 through 3 l,h#RTfry  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 n$y1kD  
    Change in Focus                :       0.000000                            0.000000 [#j|TBMHM  
    Decenter Y tolerance on surfaces 1 through 3 Q9K Gf;  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 8 /b_4!5c  
    Change in Focus                :       0.000000                            0.000000 9L%&4V}BIS  
    Tilt X tolerance on surfaces 1 through 3 (degrees) }n=Tw92g  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 \ :})R{  
    Change in Focus                :       0.000000                            0.000000 Y~=5umNSX  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) {0QD-b o  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 qTqvEa^X`  
    Change in Focus                :       0.000000                            0.000000 mwbkXy;8  
    Decenter X tolerance on surface 1 0J$wX yh  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 po=*%Zs*T  
    Change in Focus                :       0.000000                            0.000000 dyWWgC%A  
    Decenter Y tolerance on surface 1 -2> L*"^  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 p: sn>Y  
    Change in Focus                :       0.000000                            0.000000 b_V)]>v+  
    Tilt X tolerance on surface (degrees) 1 FD|R4 V*3  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 LU?#{dZ  
    Change in Focus                :       0.000000                            0.000000 rorzxp{  
    Tilt Y tolerance on surface (degrees) 1 dq:M!F  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ~l6e&J  
    Change in Focus                :       0.000000                            0.000000 \nkqp   
    Decenter X tolerance on surface 2 U{>!`RN  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 54uTu2  
    Change in Focus                :       0.000000                            0.000000 "T}J|28Z  
    Decenter Y tolerance on surface 2 >z^T~@m7l  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 b4%IyJr  
    Change in Focus                :       0.000000                            0.000000 2#/ KS^  
    Tilt X tolerance on surface (degrees) 2 "%f>/k;!h.  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 < ]wN/B-8J  
    Change in Focus                :       0.000000                            0.000000 ]qVJ>  
    Tilt Y tolerance on surface (degrees) 2 (Egykh>  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 IZAbW  
    Change in Focus                :       0.000000                            0.000000 DVTzN(gO*~  
    Decenter X tolerance on surface 3 J)jiI>  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 y9s5{\H  
    Change in Focus                :       0.000000                            0.000000 C 2oll-kN  
    Decenter Y tolerance on surface 3 Qs% f6rL  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 aOYd "S}u  
    Change in Focus                :       0.000000                            0.000000 _LK>3S qd  
    Tilt X tolerance on surface (degrees) 3 2"__jp:(  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ,nHz~Xi1t  
    Change in Focus                :       0.000000                            0.000000 7/*; rT  
    Tilt Y tolerance on surface (degrees) 3 E&&80[tN]  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ;"Ot\:0  
    Change in Focus                :       0.000000                            0.000000 , R^Pk6m>  
    Irregularity of surface 1 in fringes U4N S.`V  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Do_L  
    Change in Focus                :       0.000000                            0.000000 //LXbP3/  
    Irregularity of surface 2 in fringes >F-J}P  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ^<% w'*gR  
    Change in Focus                :       0.000000                            0.000000 PA5g]Tz  
    Irregularity of surface 3 in fringes .}Zmqz[  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 H}U&=w'  
    Change in Focus                :       0.000000                            0.000000 aY {.  
    Index tolerance on surface 1 2>EIDRLJ-  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 s?`)[K'-  
    Change in Focus                :       0.000000                            0.000000 #;mZ3[+i5  
    Index tolerance on surface 2 p:4vjh=1h  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Ak_;GvC!  
    Change in Focus                :       0.000000                           -0.000000 fi?[ e?|c@  
    3c9[FZ@ya  
    Worst offenders: }`_2fJ6  
    Type                      Value      Criterion        Change E'r* g{,  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 G*"N}M1)  
    TSTY   2             0.20000000     0.35349910    -0.19053324 -%t0'cKn,  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 d!gm4hQhl  
    TSTX   2             0.20000000     0.35349910    -0.19053324 +Nza@B d  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 rg'? ?rq  
    TSTY   1             0.20000000     0.42678383    -0.11724851 r{<u\>6X>P  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 5cfzpOqr0  
    TSTX   1             0.20000000     0.42678383    -0.11724851 r?[mn^Bo5  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 Gg;#U`  
    TSTY   3             0.20000000     0.42861670    -0.11541563 b _u&%  
    R]V`t^1  
    Estimated Performance Changes based upon Root-Sum-Square method: Vy/g;ZPU1  
    Nominal MTF                 :     0.54403234 M"_XaVl  
    Estimated change            :    -0.36299231 5#fLGXP  
    Estimated MTF               :     0.18104003 [p7le8=  
    )0GnTB;5Z  
    Compensator Statistics: rmhCuY?f  
    Change in back focus: dT|z)-Z`  
    Minimum            :        -0.000000 <wSmfg,yF  
    Maximum            :         0.000000 QyN~Crwo  
    Mean               :        -0.000000 kfVG@o?o  
    Standard Deviation :         0.000000 8:A<PV!+  
    J}YI-t  
    Monte Carlo Analysis: I|LS_m  
    Number of trials: 20 HOUyB's'  
    7"[lWC!As5  
    Initial Statistics: Normal Distribution UwM}!K7)G  
    9iOlR=-*  
      Trial       Criterion        Change ag+ML1#)  
          1     0.42804416    -0.11598818 1a)_Lko  
    Change in Focus                :      -0.400171 z44uhRh  
          2     0.54384387    -0.00018847 Sm1bDa\!=  
    Change in Focus                :       1.018470 xH f9N?  
          3     0.44510003    -0.09893230 pUwX cy<n  
    Change in Focus                :      -0.601922 f,-|"_5;   
          4     0.18154684    -0.36248550 #k"[TCQ>  
    Change in Focus                :       0.920681 Zk/NO^1b  
          5     0.28665820    -0.25737414 1uH\Bn]p?  
    Change in Focus                :       1.253875 KW;xlJz(j  
          6     0.21263372    -0.33139862 Lhc@*_2  
    Change in Focus                :      -0.903878 HaC3y[LJ0  
          7     0.40051424    -0.14351809 L.Lt9W2fi  
    Change in Focus                :      -1.354815 cwD0 ~B  
          8     0.48754161    -0.05649072 000 $ZsW?  
    Change in Focus                :       0.215922 wYxizNv,  
          9     0.40357468    -0.14045766 R5i8cjKZ?w  
    Change in Focus                :       0.281783 GHlra^  
         10     0.26315315    -0.28087919 ,-1$Vh@wM  
    Change in Focus                :      -1.048393 ]_=HC5"  
         11     0.26120585    -0.28282649 yd%\3}-  
    Change in Focus                :       1.017611 C>u 3n^  
         12     0.24033815    -0.30369419 'wZy: c  
    Change in Focus                :      -0.109292 ,mX|TI<*  
         13     0.37164046    -0.17239188 kg61Dgu  
    Change in Focus                :      -0.692430 V*m)h  
         14     0.48597489    -0.05805744 6vjB; uS[  
    Change in Focus                :      -0.662040 .J@[v  
         15     0.21462327    -0.32940907 j(BS;J$i  
    Change in Focus                :       1.611296 EUn"x'   
         16     0.43378226    -0.11025008 `MwQ6%lf  
    Change in Focus                :      -0.640081 ZB2'm3'bh  
         17     0.39321881    -0.15081353 NY;UI (<]  
    Change in Focus                :       0.914906 Gu}x+hG  
         18     0.20692530    -0.33710703 [.I,B tY+  
    Change in Focus                :       0.801607 MU e 'xK  
         19     0.51374068    -0.03029165 Q)@1:(V/  
    Change in Focus                :       0.947293 B5cyX*!?  
         20     0.38013374    -0.16389860 |)4$\<d  
    Change in Focus                :       0.667010 (p?3#|^  
    <  t (Pw  
    Number of traceable Monte Carlo files generated: 20 ~76.S  
    ?xo,)``  
    Nominal     0.54403234 @r]s9~Lx9  
    Best        0.54384387    Trial     2 yki k4MeB  
    Worst       0.18154684    Trial     4 5 muW*7  
    Mean        0.35770970 nMa^Eq#  
    Std Dev     0.11156454 vg.%.~!9  
    M$W#Q\<*#r  
    4d 3Znpf  
    Compensator Statistics: eq+o_R}CS  
    Change in back focus: JAb?u.,Ns_  
    Minimum            :        -1.354815 4QN;o%,  
    Maximum            :         1.611296 *D{/p/|[  
    Mean               :         0.161872 UjDF  
    Standard Deviation :         0.869664 5An0D V5  
    NslA/"*  
    90% >       0.20977951               ; BZM~ '  
    80% >       0.22748071               L_|uB  
    50% >       0.38667627               Tb= {g;0 @  
    20% >       0.46553746               U&n>fXTHn  
    10% >       0.50064115                %7evPiNB  
    h*KHEg"+  
    End of Run. yUW&Wgc=:  
    JZ% 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 |3,V%>z  
    7ILa H|eN  
    fBgKX ?Y  
    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 xN m32~  
    j?f <hQ  
    不吝赐教
     
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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？
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 )6>|bmpU  
    80% >       0.22748071                 e$EF% cKH  
    50% >       0.38667627                 WjrMd#^  
    20% >       0.46553746                 =*g$#l4  
    10% >       0.50064115 pTALhj#,  
    2]} Uov  
    最后这个数值是MTF值呢，还是MTF的公差？ }utNZhJ  
    P$3=i`X!nw  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   hO/5>Zv?  
    gXu^"  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : ?a5h iN0  
    90% >       0.20977951                 iHAU|`'N)  
    80% >       0.22748071                 ZV'$k\  
    50% >       0.38667627                 ?YF${  
    20% >       0.46553746                 %G;0T;0L  
    10% >       0.50064115 3 p/b  
    ....... Ih.rC>)rx  
    }p~OCW!  
    l0gY~T/#3  
    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   00ofHZ  
    Mode                : Sensitivities opsQn\4DZ?  
    Sampling            : 2 lnS(&`oh\=  
    Nominal Criterion   : 0.54403234 9\HR60V  
    Test Wavelength     : 0.6328 vr=~M?  
    |% z ^N*  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
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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？ O] Y v   
    ~#R9i^Y  
    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
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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？
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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
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