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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 4a~9?}V:  
    8eoDE. }  
    hMx/}Tw wt  
    C44 Dz.rs  
    然后添加了默认公差分析，基本没变 )Nq$~aAm  
    0)lG~_q  
    BT+ws@|[  
    7"y"%+*/  
    然后运行分析的结果如下： e~we YGK  
    (sn|`k3I  
    Analysis of Tolerances `}u~nu<  
    7b T5-=.  
    File : E:\光学设计资料\zemax练习\f500.ZMX A! 1>  
    Title: mv xg|<  
    Date : TUE JUN 21 2011 ;xa]ke3]  
    8DLMxG  
    Units are Millimeters. femAVx}go  
    All changes are computed using linear differences. sM~|}|p  
    BZx#@356N  
    Paraxial Focus compensation only. v *~ yN*  
    R m *"SG  
    WARNING: Solves should be removed prior to tolerancing. 4aZsz,=  
    YrgwR  
    Mnemonics: ./ib{ @A.  
    TFRN: Tolerance on curvature in fringes. q@u$I'`Bs  
    TTHI: Tolerance on thickness. q^dI!93n|  
    TSDX: Tolerance on surface decentering in x. -i @!{ ?  
    TSDY: Tolerance on surface decentering in y. lTdYPqMi  
    TSTX: Tolerance on surface tilt in x (degrees). 'J<KL#og  
    TSTY: Tolerance on surface tilt in y (degrees). >1mCjP  
    TIRR: Tolerance on irregularity (fringes). "v~w#\pz7  
    TIND: Tolerance on Nd index of refraction. i' |S g  
    TEDX: Tolerance on element decentering in x. 0/(YH  
    TEDY: Tolerance on element decentering in y. sOLo[5y'  
    TETX: Tolerance on element tilt in x (degrees). _.FxqH>  
    TETY: Tolerance on element tilt in y (degrees). j|HOry1E&  
    -_pI:K[  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. HcQ{ok9u  
    "W:'cIw  
    WARNING: Boundary constraints on compensators will be ignored. |n~,$  
    &&(sZG w  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm )Cyrs~  
    Mode                : Sensitivities  }e9:2  
    Sampling            : 2 m[ txKj.=_  
    Nominal Criterion   : 0.54403234 <tgJ-rnL  
    Test Wavelength     : 0.6328 m]Z& .,bA  
    7ktf =Y  
    /o![%&-l  
    Fields: XY Symmetric Angle in degrees *]O[ZjyOY  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY M_UhFY='  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 J0lTp /  
    )MW.Y  
    Sensitivity Analysis: U{n 0Z  
    $0sU h]7y  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| I`E9]b(w  
    Type                      Value      Criterion        Change          Value      Criterion        Change #ra:^9;Es:  
    Fringe tolerance on surface 1 )5)S8~Oc  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 `gD'q5.z;3  
    Change in Focus                :      -0.000000                            0.000000 -&D~TL#  
    Fringe tolerance on surface 2 z9YC9m)jK  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 zpiqJEf|'"  
    Change in Focus                :       0.000000                            0.000000 R.*KaCA  
    Fringe tolerance on surface 3 q%"]}@a0  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 XNf%vC>  
    Change in Focus                :      -0.000000                            0.000000 GmPNzHDb  
    Thickness tolerance on surface 1 ^zO%O653  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 AnfJyltS  
    Change in Focus                :       0.000000                            0.000000 UP 75}h9  
    Thickness tolerance on surface 2 D#1'#di*t  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ,X)0+DNsq  
    Change in Focus                :       0.000000                           -0.000000 89U<9j   
    Decenter X tolerance on surfaces 1 through 3 J,_I$* _0  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 a RC >pK.  
    Change in Focus                :       0.000000                            0.000000 uw&GXOzew9  
    Decenter Y tolerance on surfaces 1 through 3 P'KaWu9z  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 e 9U\48  
    Change in Focus                :       0.000000                            0.000000 KFkKr>S :  
    Tilt X tolerance on surfaces 1 through 3 (degrees) a9(1 6k  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 PBTGN;y  
    Change in Focus                :       0.000000                            0.000000 6,7Fl=<  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ;m,lS_[c  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 M6jP>fbV*  
    Change in Focus                :       0.000000                            0.000000 dur}3oS0p  
    Decenter X tolerance on surface 1 #U{^L{1Gx  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 E tWpBg  
    Change in Focus                :       0.000000                            0.000000 o 4L9Xb7=G  
    Decenter Y tolerance on surface 1 |qE"60&"}  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 lNs 'jaD  
    Change in Focus                :       0.000000                            0.000000 ;<1O86!  
    Tilt X tolerance on surface (degrees) 1 L~cswG'K  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 U SXz  
    Change in Focus                :       0.000000                            0.000000 IpXg2QbN  
    Tilt Y tolerance on surface (degrees) 1 y/K%F,WMf  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Ka1 F7b  
    Change in Focus                :       0.000000                            0.000000 !u.{<51b  
    Decenter X tolerance on surface 2 w;vp X>  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 /ZlW9|  
    Change in Focus                :       0.000000                            0.000000 I1=YSi;A  
    Decenter Y tolerance on surface 2 5YUn{qtD  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 RXkE"H{  
    Change in Focus                :       0.000000                            0.000000 v1?P$f*g  
    Tilt X tolerance on surface (degrees) 2 ;TD<\1HJT=  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 xojy[c#  
    Change in Focus                :       0.000000                            0.000000 - o$S=  
    Tilt Y tolerance on surface (degrees) 2 7 a !b}  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ])!|b2:s3  
    Change in Focus                :       0.000000                            0.000000 ZalG/PFy  
    Decenter X tolerance on surface 3 z kYl IUD  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 I&3L1rl3{*  
    Change in Focus                :       0.000000                            0.000000 ?|Fu^eR%X  
    Decenter Y tolerance on surface 3 TKvUBy  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 )I9AF,K  
    Change in Focus                :       0.000000                            0.000000 ca*USM  
    Tilt X tolerance on surface (degrees) 3 Vj_(55WQ  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Gy.<gyK9  
    Change in Focus                :       0.000000                            0.000000 z11;r]VI  
    Tilt Y tolerance on surface (degrees) 3 EShc1KPqc  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ~;_]U[eOL  
    Change in Focus                :       0.000000                            0.000000 L^yQb4$&M  
    Irregularity of surface 1 in fringes 8)ZWR3)+W  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 e]!Vxn3  
    Change in Focus                :       0.000000                            0.000000 E0$UoP   
    Irregularity of surface 2 in fringes I: U/%cr,  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 gF^l`1f"  
    Change in Focus                :       0.000000                            0.000000 ~0w7E0DE[  
    Irregularity of surface 3 in fringes 10_eUQN  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 x9xb4ZW  
    Change in Focus                :       0.000000                            0.000000 7'S/hV%  
    Index tolerance on surface 1 ~:b bV6YO  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 7s; <5xc  
    Change in Focus                :       0.000000                            0.000000 L!V`Sb  
    Index tolerance on surface 2 q -M&f@Il  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 gn1`ZYg  
    Change in Focus                :       0.000000                           -0.000000 /%po@Pm#I  
    /D`M?nD7  
    Worst offenders: p^Ca-+R3  
    Type                      Value      Criterion        Change hE\,4c1  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 I+D`\OSL  
    TSTY   2             0.20000000     0.35349910    -0.19053324 nT` NfN  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 OHssUt  
    TSTX   2             0.20000000     0.35349910    -0.19053324 |w- tkkS  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 Ky|Hi3?  
    TSTY   1             0.20000000     0.42678383    -0.11724851 1B'i7  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 vVc:[i  
    TSTX   1             0.20000000     0.42678383    -0.11724851 $ ;>,  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 "8ILV`[  
    TSTY   3             0.20000000     0.42861670    -0.11541563 Bjml%  
    [P OcO  
    Estimated Performance Changes based upon Root-Sum-Square method: -kZz,pNQ,  
    Nominal MTF                 :     0.54403234 PtO-%I<N  
    Estimated change            :    -0.36299231 /4#.qq0\{c  
    Estimated MTF               :     0.18104003 v!t*Ng  
    (sS[F-2R7  
    Compensator Statistics: c[!e*n!y  
    Change in back focus: B5#a 4G.  
    Minimum            :        -0.000000 ^4Tr @g#]"  
    Maximum            :         0.000000 6'(5pt  
    Mean               :        -0.000000 Z@ h<xo*r  
    Standard Deviation :         0.000000 'gUHy1p  
    KK(x)(  
    Monte Carlo Analysis: TmKO/N@}  
    Number of trials: 20 #Vv*2Mc  
    EM vV  
    Initial Statistics: Normal Distribution H b]    
    9`dQ7z.8t  
      Trial       Criterion        Change Vt n$*ML  
          1     0.42804416    -0.11598818 2s-f?WetbP  
    Change in Focus                :      -0.400171 -5p=gO  
          2     0.54384387    -0.00018847 <2A4}+p:  
    Change in Focus                :       1.018470 J9/9k  
          3     0.44510003    -0.09893230 zZDG5_$n  
    Change in Focus                :      -0.601922 rM[Ps=5  
          4     0.18154684    -0.36248550 v&H&+:<  
    Change in Focus                :       0.920681 -jC. dz  
          5     0.28665820    -0.25737414 LrF'Hd=O  
    Change in Focus                :       1.253875 (`3 Bi]7  
          6     0.21263372    -0.33139862 X?>S24I"9  
    Change in Focus                :      -0.903878 {nryAXK  
          7     0.40051424    -0.14351809 }y=7r!{@  
    Change in Focus                :      -1.354815 rRT9)wDa  
          8     0.48754161    -0.05649072 zG [-n.  
    Change in Focus                :       0.215922 `*}#Bks!  
          9     0.40357468    -0.14045766 of+$TKQNpN  
    Change in Focus                :       0.281783 <+_OgF1G  
         10     0.26315315    -0.28087919 T%P 0M*  
    Change in Focus                :      -1.048393 a2dF(H  
         11     0.26120585    -0.28282649 WgE~H)_%  
    Change in Focus                :       1.017611 S`0@fieOf  
         12     0.24033815    -0.30369419 >:OOuf#  
    Change in Focus                :      -0.109292 ;-*4 (3lu  
         13     0.37164046    -0.17239188 7:x.08  
    Change in Focus                :      -0.692430 \hi{r@k>}  
         14     0.48597489    -0.05805744 T]CvfvO5  
    Change in Focus                :      -0.662040 14oD^`-t  
         15     0.21462327    -0.32940907 aMv  
    Change in Focus                :       1.611296 }[AIE[  
         16     0.43378226    -0.11025008 @q^WD_k  
    Change in Focus                :      -0.640081 !Toq~,a8?  
         17     0.39321881    -0.15081353 ? ~_%I  
    Change in Focus                :       0.914906 i.F[.-.  
         18     0.20692530    -0.33710703 qmxkmO+Qur  
    Change in Focus                :       0.801607 ]t(g7lc}U  
         19     0.51374068    -0.03029165 j{p0yuZ)<  
    Change in Focus                :       0.947293 /^4)V8D_S  
         20     0.38013374    -0.16389860 &]#D`u  
    Change in Focus                :       0.667010 mT!~;] RrF  
    _;'}P2&Q  
    Number of traceable Monte Carlo files generated: 20 1ed#nB %  
    3kKXzIh  
    Nominal     0.54403234 oWXvkDN   
    Best        0.54384387    Trial     2 L0+@{GP?  
    Worst       0.18154684    Trial     4 {_k 6t  
    Mean        0.35770970 i}HF  
    Std Dev     0.11156454 A\4 Gq  
    WU=Os8gR  
    3*8#cSQ/6o  
    Compensator Statistics: ^GRd;v=-@  
    Change in back focus: +?mZ_sf8w  
    Minimum            :        -1.354815 r43dnwX  
    Maximum            :         1.611296 \9ap$  
    Mean               :         0.161872 zaoZCyJT%  
    Standard Deviation :         0.869664 M.|hnGX N  
    <Xl G:nmY  
    90% >       0.20977951               Lo;T\C N  
    80% >       0.22748071               ^]aDLjD  
    50% >       0.38667627               W:9L!+m^  
    20% >       0.46553746               + FLzK(  
    10% >       0.50064115                WBC'~h<@  
    B623B HwS  
    End of Run. w7dG=a&  
    #}k^g:l1  
    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 [bGdg  
    @<alWBS  
    }r,k*I'K  
    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 {BKI8vy  
    %kVpW& ~  
    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                 *K0CUir|  
    80% >       0.22748071                 NCl={O9<j  
    50% >       0.38667627                 T.&^1qWWA  
    20% >       0.46553746                 v}[7)oj|  
    10% >       0.50064115 eR5swy&  
    !xa,[$w(^  
    最后这个数值是MTF值呢，还是MTF的公差？ SJ+.i u/  
    2Uk$9s  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   BH%eu 7`t  
    [nflQW6  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : A-.jv  
    90% >       0.20977951                 rN} {v}n  
    80% >       0.22748071                 z26zl[.  
    50% >       0.38667627                 hRGK W  
    20% >       0.46553746                 <@5#  
    10% >       0.50064115 WihOGdUS6  
    ....... 3}n=od=  
    *1}9`$  
    Bn47O~  
    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   ~SP.&>Q>  
    Mode                : Sensitivities fy9{W@E3p  
    Sampling            : 2 w0tlF:Eg  
    Nominal Criterion   : 0.54403234 @wZ`;J%  
    Test Wavelength     : 0.6328 h'w9=Pk~6y  
    : bT*cgD{  
    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？ j$&k;S  
    j\!zz  
    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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