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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 k2Yh?OH  
    Bw2-4K\"kc  
    =C{)i@ +  
    MONfA;64/  
    然后添加了默认公差分析，基本没变 2\h]*x% :  
    6u>${}  
    S#+Dfa`8X  
    9-)D"ZhLe  
    然后运行分析的结果如下： &oJ=   
    rj zRZ  
    Analysis of Tolerances L{fKZ  
    t,$4J6  
    File : E:\光学设计资料\zemax练习\f500.ZMX h=6Zvf<x  
    Title: +*"u(7AV  
    Date : TUE JUN 21 2011 W]Z;=-CBr  
    dL%?k@R  
    Units are Millimeters. FoY_5/  
    All changes are computed using linear differences. QixEMX4<  
    ] h3~>8<  
    Paraxial Focus compensation only. H^ _[IkuA%  
    {fXD@lhi  
    WARNING: Solves should be removed prior to tolerancing. yRt]i>  
    p/jC}[$v  
    Mnemonics: Pg[XIfBva  
    TFRN: Tolerance on curvature in fringes. 7UQFAt_r  
    TTHI: Tolerance on thickness. ~"eos~AuW  
    TSDX: Tolerance on surface decentering in x. 0M^7#),  
    TSDY: Tolerance on surface decentering in y. c@d[HstBJ  
    TSTX: Tolerance on surface tilt in x (degrees). ^_FB .y%  
    TSTY: Tolerance on surface tilt in y (degrees). ;Z]i$Vi_r  
    TIRR: Tolerance on irregularity (fringes). *?'nA{a)E  
    TIND: Tolerance on Nd index of refraction. 7b7~D +b  
    TEDX: Tolerance on element decentering in x. WW33ZJ  
    TEDY: Tolerance on element decentering in y. MY>mP  
    TETX: Tolerance on element tilt in x (degrees). 8,\toT7  
    TETY: Tolerance on element tilt in y (degrees). r}k2n s9  
    ??& Q"6Oe  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. b77Iw%x7  
    _U}pdzX?  
    WARNING: Boundary constraints on compensators will be ignored. G'b*.\=  
    ,CiN@T \&  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm m\QUt ;  
    Mode                : Sensitivities 8Jnb/A}  
    Sampling            : 2 ``*iK  
    Nominal Criterion   : 0.54403234 &'{6_-kh  
    Test Wavelength     : 0.6328 yhzC 9nTH  
    H4C]%Q  
    AlP}H~|M7  
    Fields: XY Symmetric Angle in degrees eUP.:(E  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 9[yW&t;#  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 Zpfsh2`  
    -4du`dg  
    Sensitivity Analysis: TEQs\d  
    V$U#'G>m  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| D@9adwQb  
    Type                      Value      Criterion        Change          Value      Criterion        Change tkT:5O6  
    Fringe tolerance on surface 1 mS)|i+5  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 s~N WJ*i  
    Change in Focus                :      -0.000000                            0.000000 +T]/4"^M  
    Fringe tolerance on surface 2 HCOv<k  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 $07;gpZt  
    Change in Focus                :       0.000000                            0.000000 Ph@hk0dgr/  
    Fringe tolerance on surface 3 P)7:G?OTx  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 [D/q  
    Change in Focus                :      -0.000000                            0.000000 ;+:C  
    Thickness tolerance on surface 1 sfb)iH|sW  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Zb> UY8  
    Change in Focus                :       0.000000                            0.000000 4%k{vo5i  
    Thickness tolerance on surface 2 #0OW0:Q  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 tzH~[n,  
    Change in Focus                :       0.000000                           -0.000000 a=m4)tjk  
    Decenter X tolerance on surfaces 1 through 3 44e:K5;]7  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 hnOo T? V  
    Change in Focus                :       0.000000                            0.000000 b;kgP`%%  
    Decenter Y tolerance on surfaces 1 through 3 !vd(WKq  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 }Xa1K;KM{  
    Change in Focus                :       0.000000                            0.000000 6"@`iY  
    Tilt X tolerance on surfaces 1 through 3 (degrees) jtS-nQ|  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 -^C^3pms  
    Change in Focus                :       0.000000                            0.000000 . W ~&d_n  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ,O`a_b]  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314  .7GTL  
    Change in Focus                :       0.000000                            0.000000 =;HC7TUM&  
    Decenter X tolerance on surface 1 -@=As00Bg  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 fXo$1!  
    Change in Focus                :       0.000000                            0.000000 PBkTI2 v  
    Decenter Y tolerance on surface 1 3MqyHOOv  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 o8uak*"{  
    Change in Focus                :       0.000000                            0.000000 4i]h0_]  
    Tilt X tolerance on surface (degrees) 1 r Uau? ?  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 &YiUhK  
    Change in Focus                :       0.000000                            0.000000 tfz"9PV80  
    Tilt Y tolerance on surface (degrees) 1 ,,}& Q%5  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 E@.daUoB  
    Change in Focus                :       0.000000                            0.000000 Y6+/_$N4|  
    Decenter X tolerance on surface 2 :'6vIPN5  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Vt4KG+zm  
    Change in Focus                :       0.000000                            0.000000 BIQQJLu  
    Decenter Y tolerance on surface 2 luvxwved  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 l%\p  
    Change in Focus                :       0.000000                            0.000000 2!kb?  
    Tilt X tolerance on surface (degrees) 2 b8FSVV 7@  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 fYgEiap  
    Change in Focus                :       0.000000                            0.000000 Ef)v("'w  
    Tilt Y tolerance on surface (degrees) 2 @ zs.M-F  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 K;L6<a A#  
    Change in Focus                :       0.000000                            0.000000 n{*A<-vL  
    Decenter X tolerance on surface 3 uO^,N**R#  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 lVptA3F  
    Change in Focus                :       0.000000                            0.000000 ]H {g/C{j  
    Decenter Y tolerance on surface 3 >;s!X(6 b  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 9*Z!=Y#4,  
    Change in Focus                :       0.000000                            0.000000 '&LH9r  
    Tilt X tolerance on surface (degrees) 3 c3aBPig\D  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Pt=@U:  
    Change in Focus                :       0.000000                            0.000000 ;{j@ia  
    Tilt Y tolerance on surface (degrees) 3 5K#<VU*:  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 r"4&.&6  
    Change in Focus                :       0.000000                            0.000000 NG+%H1!$_  
    Irregularity of surface 1 in fringes D~Rv"Hh  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 FlyRcj  
    Change in Focus                :       0.000000                            0.000000 M&SY2\\TB  
    Irregularity of surface 2 in fringes <^n@q f}  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 r?%,#1|$$  
    Change in Focus                :       0.000000                            0.000000 Nu,t,&B   
    Irregularity of surface 3 in fringes x'iBEm  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 cgV5{|P  
    Change in Focus                :       0.000000                            0.000000 hd>_K*oH  
    Index tolerance on surface 1 k*ZYT6Z?  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 0Qr|!B:+9)  
    Change in Focus                :       0.000000                            0.000000 /Z1>3=G by  
    Index tolerance on surface 2 O*lMIWx  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 VJbn/5+P  
    Change in Focus                :       0.000000                           -0.000000 f\u5=!kjN  
    Yu+;vjbK-  
    Worst offenders: cv7.=*Kb;  
    Type                      Value      Criterion        Change /P[@o  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 dUc?>#TU  
    TSTY   2             0.20000000     0.35349910    -0.19053324 WR zIK09@  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 } $oZZKS  
    TSTX   2             0.20000000     0.35349910    -0.19053324 1 ~s$<  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ;s^F:O  
    TSTY   1             0.20000000     0.42678383    -0.11724851 tGw QUn  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 {fxytiH8  
    TSTX   1             0.20000000     0.42678383    -0.11724851 '>Uip+'  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 [P3 Z"&  
    TSTY   3             0.20000000     0.42861670    -0.11541563 g0 k{b  
    .2f0e[J  
    Estimated Performance Changes based upon Root-Sum-Square method: QI4a@WB]ok  
    Nominal MTF                 :     0.54403234 )YPu t.  
    Estimated change            :    -0.36299231 #9/S2m2\YG  
    Estimated MTF               :     0.18104003 7J|e L yj  
    RD6`b_]o  
    Compensator Statistics: A 6j>KTU  
    Change in back focus: MT^krv(G  
    Minimum            :        -0.000000 t@cImmh\T  
    Maximum            :         0.000000 Ou5,7Ne  
    Mean               :        -0.000000 nV_[40KP_  
    Standard Deviation :         0.000000 *n*po.Xr  
    O[5u6heNMr  
    Monte Carlo Analysis: Senb_?  
    Number of trials: 20 w1,6%?p(O  
    P~@.(hed  
    Initial Statistics: Normal Distribution IJ2>\bW_p  
    E>&oe&`o'  
      Trial       Criterion        Change qM9> x:V  
          1     0.42804416    -0.11598818 4*?JU v  
    Change in Focus                :      -0.400171 VI;)VJbq  
          2     0.54384387    -0.00018847 ;T|hNsSt  
    Change in Focus                :       1.018470 WV,j <x9w  
          3     0.44510003    -0.09893230 ,K8(D<{  
    Change in Focus                :      -0.601922 nA.~}  
          4     0.18154684    -0.36248550 ^2eH0O!  
    Change in Focus                :       0.920681 ;hkzL_' E)  
          5     0.28665820    -0.25737414 j9 O"!9$vQ  
    Change in Focus                :       1.253875 4^{~MgQWK+  
          6     0.21263372    -0.33139862 Vbp`Rm1?  
    Change in Focus                :      -0.903878 _Bq[c  
          7     0.40051424    -0.14351809 m:C|R-IL  
    Change in Focus                :      -1.354815 2|}KBny  
          8     0.48754161    -0.05649072 1J[|Ow  
    Change in Focus                :       0.215922 ct@i]}"`  
          9     0.40357468    -0.14045766 ,H:{twc   
    Change in Focus                :       0.281783 h%!N!\  
         10     0.26315315    -0.28087919 y R_x:,|g  
    Change in Focus                :      -1.048393 OO-b*\QW  
         11     0.26120585    -0.28282649 x>MY_?a  
    Change in Focus                :       1.017611 q|xic>.  
         12     0.24033815    -0.30369419 k-|b{QZ8!;  
    Change in Focus                :      -0.109292 =Y<RG"]a&J  
         13     0.37164046    -0.17239188 *S\/l-D  
    Change in Focus                :      -0.692430 T)#eaz$4W  
         14     0.48597489    -0.05805744 3vRBK?Q.y  
    Change in Focus                :      -0.662040 ">'`{mXew  
         15     0.21462327    -0.32940907 I>%@[h,+  
    Change in Focus                :       1.611296 [a\>"I\[  
         16     0.43378226    -0.11025008 +HfZs"x  
    Change in Focus                :      -0.640081 yUlYf#`H  
         17     0.39321881    -0.15081353 gs9VCaIa  
    Change in Focus                :       0.914906 ;eiqzdP  
         18     0.20692530    -0.33710703 vw/X  
    Change in Focus                :       0.801607 dx[kG  
         19     0.51374068    -0.03029165 U=>4=gsG  
    Change in Focus                :       0.947293 )d"s6i  
         20     0.38013374    -0.16389860 YfUUbV  
    Change in Focus                :       0.667010 G&v. cF#Y'  
    pb=yQ}.  
    Number of traceable Monte Carlo files generated: 20 YMIX|bj6Y  
    1xt N3{c  
    Nominal     0.54403234 sA[eKQjaD  
    Best        0.54384387    Trial     2 _%6Vcy  
    Worst       0.18154684    Trial     4 :Tn1]a)f6  
    Mean        0.35770970 OE_>Kw7q  
    Std Dev     0.11156454 >TQnCG =  
    ,]8$QFf  
    8[mj*^P  
    Compensator Statistics: 7) e#b  
    Change in back focus: AZ& ]@Ao  
    Minimum            :        -1.354815 ?R\:6x<  
    Maximum            :         1.611296 ey! {  
    Mean               :         0.161872 ~@N0$S  
    Standard Deviation :         0.869664 }5a$Ka-  
    Hsi<!g.  
    90% >       0.20977951               nN[gAM (  
    80% >       0.22748071               ;O Y*`(Id  
    50% >       0.38667627               ,?ci+M)  
    20% >       0.46553746               7(1UXtT  
    10% >       0.50064115                G2e0\}q  
    n> O3p ~  
    End of Run. /;\{zA$uC=  
    0F|DD8tHR  
    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 d vTsbs/6  
    0Rze9od]$  
    z 8\;XR  
    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 3f^~mTY9>]  
    ^VAvQ(b!:i  
    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                 O.g!k"nas&  
    80% >       0.22748071                 uY'77,G_J  
    50% >       0.38667627                 eaGd:(  
    20% >       0.46553746                 t)hAD_sf  
    10% >       0.50064115 ywS2` (  
    aE'nW@YL.  
    最后这个数值是MTF值呢，还是MTF的公差？ n'-?CMH`  
    +bv-!rf  
    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？？？   /o)o7$6Q  
    Y']D_\y  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : 8<VO>WA>E  
    90% >       0.20977951                 E(;V.=I  
    80% >       0.22748071                 Z?#_3h$"T  
    50% >       0.38667627                 lhk[U!>#  
    20% >       0.46553746                 !)}3[h0  
    10% >       0.50064115 >pVrY; P[  
    ....... G q" [5r"  
    /_`f b)f  
    Y}/e" mp  
    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   `o.DuvQ E  
    Mode                : Sensitivities vtv^l 3  
    Sampling            : 2 lDQ'  
    Nominal Criterion   : 0.54403234 =` b/ip5  
    Test Wavelength     : 0.6328 TH`zp]0  
    PMdvBOtS`  
    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？ <h$Nh0  
    M<A*{@4$w&  
    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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