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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 D\-\U E/  
    qE8aX*A1/  
    D4[t^G;J  
    iP"sw0V8  
    然后添加了默认公差分析，基本没变 dM^Z,; u  
    DJ:'<"zH7  
    e@ZM&iR  
    mA+:)?e5~  
    然后运行分析的结果如下： ud$-A  
    3>@VPMi  
    Analysis of Tolerances ^.!jD+=I  
    *??lwvJp  
    File : E:\光学设计资料\zemax练习\f500.ZMX ?}4,s7PR  
    Title: KRC"3Qt  
    Date : TUE JUN 21 2011 7<] EH:9  
    OpEH4X.Z  
    Units are Millimeters. Y -a   
    All changes are computed using linear differences. h7UNmwj  
    >9dD7FH  
    Paraxial Focus compensation only. lt&(S)  
    Jq'8"  
    WARNING: Solves should be removed prior to tolerancing. kY~4AH  
    yEI@^8]s  
    Mnemonics: Ct w<-'  
    TFRN: Tolerance on curvature in fringes. ,dCEy+  
    TTHI: Tolerance on thickness. i#`q<+/q  
    TSDX: Tolerance on surface decentering in x. 8'8`xu$  
    TSDY: Tolerance on surface decentering in y. 0yI1r7yNB+  
    TSTX: Tolerance on surface tilt in x (degrees). @I`^\oJ  
    TSTY: Tolerance on surface tilt in y (degrees). ujX; wGje  
    TIRR: Tolerance on irregularity (fringes). _NsEeKU  
    TIND: Tolerance on Nd index of refraction. !{t|z=Qg  
    TEDX: Tolerance on element decentering in x. Ey|_e3Lf[  
    TEDY: Tolerance on element decentering in y. f|~{j(.v  
    TETX: Tolerance on element tilt in x (degrees). 7PX`kI  
    TETY: Tolerance on element tilt in y (degrees). 3uqhYT;  
    F#sm^%_2  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Ic0Y  
    -{xk&EB^$5  
    WARNING: Boundary constraints on compensators will be ignored. rm,`M  
    r[a7">n  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 0- )K_JV  
    Mode                : Sensitivities [7FG;}lB-  
    Sampling            : 2 4 V')FGB$  
    Nominal Criterion   : 0.54403234 0 Uropam  
    Test Wavelength     : 0.6328 `x`[hJ?i  
     mLxgvp  
    ,|({[ 9jA  
    Fields: XY Symmetric Angle in degrees 9qB0F_xl  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY I4X9RYB6c  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 dz] 5s  
    l4oyF|oJTH  
    Sensitivity Analysis: !wfW0?eu  
    FQDf?d5  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| fORkH^Y(&  
    Type                      Value      Criterion        Change          Value      Criterion        Change g"evnp  
    Fringe tolerance on surface 1 `OBzOM  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 8Y?M:^f~  
    Change in Focus                :      -0.000000                            0.000000 XVYFyza;  
    Fringe tolerance on surface 2 }'$PYAf6  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 N]A# ecm  
    Change in Focus                :       0.000000                            0.000000 "<!U  
    Fringe tolerance on surface 3 MEiP&=gX!  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 li r=0oq<  
    Change in Focus                :      -0.000000                            0.000000 ::|~tLFu  
    Thickness tolerance on surface 1 z~ cW,  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 dI{DiPho  
    Change in Focus                :       0.000000                            0.000000 t<!;shH,s  
    Thickness tolerance on surface 2 bO=|utpk  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 2s\ClT  
    Change in Focus                :       0.000000                           -0.000000 #X}HF$t{=  
    Decenter X tolerance on surfaces 1 through 3 6l]X{A.  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 1UP=(8j/  
    Change in Focus                :       0.000000                            0.000000 ~zqb{o^pT  
    Decenter Y tolerance on surfaces 1 through 3 +WH\,E  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ]ordqulq1  
    Change in Focus                :       0.000000                            0.000000 @Jzk2,rI  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ]:|B).  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 P0m3IH)  
    Change in Focus                :       0.000000                            0.000000 H@Z_P p?  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) /T w{JO#Q  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 !(GyOAb  
    Change in Focus                :       0.000000                            0.000000 HZyA\FS  
    Decenter X tolerance on surface 1 m\L`$=eO8  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 m@td[^O-  
    Change in Focus                :       0.000000                            0.000000 e8F]m`{_"  
    Decenter Y tolerance on surface 1 ;w7mr1  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ] G&*HMtp  
    Change in Focus                :       0.000000                            0.000000 [n2B6Px  
    Tilt X tolerance on surface (degrees) 1 utlr|m Xc  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 wVBK Vb9N  
    Change in Focus                :       0.000000                            0.000000 EuK}L[Kl  
    Tilt Y tolerance on surface (degrees) 1 ~KBa-i%o  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Hr|f(9xA  
    Change in Focus                :       0.000000                            0.000000 i9;  
    Decenter X tolerance on surface 2 UVo`jb|> o  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 /( Wq  
    Change in Focus                :       0.000000                            0.000000 T8XrmR&?PX  
    Decenter Y tolerance on surface 2 ge~@}&#iO@  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 IiU> VLa  
    Change in Focus                :       0.000000                            0.000000 7'G;ijx  
    Tilt X tolerance on surface (degrees) 2 8tj]@GE  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 qX\*l m/l  
    Change in Focus                :       0.000000                            0.000000 Fc~G*Gz~Z|  
    Tilt Y tolerance on surface (degrees) 2 SH%NYjj  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 )4yP(6|lx  
    Change in Focus                :       0.000000                            0.000000 )PX VR T  
    Decenter X tolerance on surface 3 C8U3+ s  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 `Ij@;=(  
    Change in Focus                :       0.000000                            0.000000 k9Pvh,_wp  
    Decenter Y tolerance on surface 3 @(t3<g  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 6d-\+ t8  
    Change in Focus                :       0.000000                            0.000000 ;*A'2ymXUT  
    Tilt X tolerance on surface (degrees) 3 |7qt/z  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 .ZTvOm'mB^  
    Change in Focus                :       0.000000                            0.000000 E9:@H;Gc  
    Tilt Y tolerance on surface (degrees) 3 -$Oh.B`i  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 $R9D L^iD  
    Change in Focus                :       0.000000                            0.000000 380`>"D  
    Irregularity of surface 1 in fringes u,^CFws_  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 HK;NR.D  
    Change in Focus                :       0.000000                            0.000000 FY1iY/\Cn  
    Irregularity of surface 2 in fringes 9]4Q@%  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 lA^1}  
    Change in Focus                :       0.000000                            0.000000 ] ; w 2YR  
    Irregularity of surface 3 in fringes {)[o*+9  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 v=U<exM6%  
    Change in Focus                :       0.000000                            0.000000 ]3KeAJ  
    Index tolerance on surface 1 ]PXM;w  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 M(%H  
    Change in Focus                :       0.000000                            0.000000 [9m3@Yd'  
    Index tolerance on surface 2 |Y9>kXMl  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 W }N UU  
    Change in Focus                :       0.000000                           -0.000000 oaIk1U;g  
    +7_qg i7:  
    Worst offenders: TEtmmp0OD  
    Type                      Value      Criterion        Change u47<J?!Q  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 8=8 hbdy;  
    TSTY   2             0.20000000     0.35349910    -0.19053324 eg0_ <  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 T5XXC1+  
    TSTX   2             0.20000000     0.35349910    -0.19053324 :U6` n  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 p.DQ|?  
    TSTY   1             0.20000000     0.42678383    -0.11724851 6Yu:v  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 V6]6KP#D  
    TSTX   1             0.20000000     0.42678383    -0.11724851 wlS/(:02  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 =pH2V^<<#  
    TSTY   3             0.20000000     0.42861670    -0.11541563 R9J!}az'  
    }vndt*F   
    Estimated Performance Changes based upon Root-Sum-Square method: -f+#j=FX  
    Nominal MTF                 :     0.54403234 YT\`R  
    Estimated change            :    -0.36299231 F/5&:e?( )  
    Estimated MTF               :     0.18104003 Ji4p6$ .j-  
    0At0`Q#  
    Compensator Statistics: (3Db}Hnn  
    Change in back focus: V9c.(QY|f  
    Minimum            :        -0.000000 vFPY|Vzh  
    Maximum            :         0.000000 MIMC(<   
    Mean               :        -0.000000 9LR=>@Z  
    Standard Deviation :         0.000000 [vg&E )V  
    )Z7Vm2a  
    Monte Carlo Analysis: X9x`i  
    Number of trials: 20 A5<t>6Y  
    HsY5wC  
    Initial Statistics: Normal Distribution waMF~#PJlt  
    I)HO/i 6>3  
      Trial       Criterion        Change dC=[o\  
          1     0.42804416    -0.11598818 lC<;Q*Y  
    Change in Focus                :      -0.400171 i%2u>N i^  
          2     0.54384387    -0.00018847 /%@;t@BK4  
    Change in Focus                :       1.018470 epy2}TI  
          3     0.44510003    -0.09893230 C}huU  
    Change in Focus                :      -0.601922 4cjfn'x  
          4     0.18154684    -0.36248550 -TUJ"ep]QJ  
    Change in Focus                :       0.920681 L\Se ,  
          5     0.28665820    -0.25737414 ;ALWL~Xm  
    Change in Focus                :       1.253875 8^7Oc,:~  
          6     0.21263372    -0.33139862 ORM>|&  
    Change in Focus                :      -0.903878 Q}BMvR 9w  
          7     0.40051424    -0.14351809 ImXYI7PL  
    Change in Focus                :      -1.354815 b8WtNVd  
          8     0.48754161    -0.05649072 1@]&iZ]  
    Change in Focus                :       0.215922 d NACE*g;q  
          9     0.40357468    -0.14045766 *`>BOl+ro  
    Change in Focus                :       0.281783 L2H  
         10     0.26315315    -0.28087919 p9v:T1 ?  
    Change in Focus                :      -1.048393 jJ$\WUQ.  
         11     0.26120585    -0.28282649 kK &w5'  
    Change in Focus                :       1.017611 ?sN{U\  
         12     0.24033815    -0.30369419 B[b>T=  
    Change in Focus                :      -0.109292 -Vn#Ab_C  
         13     0.37164046    -0.17239188 R)NSJ-A!2  
    Change in Focus                :      -0.692430 R1];P*>%gZ  
         14     0.48597489    -0.05805744 =p5DT  
    Change in Focus                :      -0.662040 lQ 8hY$  
         15     0.21462327    -0.32940907 O8]e(i  
    Change in Focus                :       1.611296 F!+1w(b:  
         16     0.43378226    -0.11025008 '*J+mZtN  
    Change in Focus                :      -0.640081 HTQZIm  
         17     0.39321881    -0.15081353 z8\YMr 6o  
    Change in Focus                :       0.914906 nFnM9 pdMK  
         18     0.20692530    -0.33710703 (Pc>D';{S  
    Change in Focus                :       0.801607 +x]/W|5  
         19     0.51374068    -0.03029165 g~hMOI?KK^  
    Change in Focus                :       0.947293 c'oiW)8;A  
         20     0.38013374    -0.16389860 O<S.fr,  
    Change in Focus                :       0.667010 dq 93P%X24  
    UtQj<18<  
    Number of traceable Monte Carlo files generated: 20 vJWBr:`L  
    nCQtn%j't  
    Nominal     0.54403234 )Q2IYCj{  
    Best        0.54384387    Trial     2 "i0>>@NR'  
    Worst       0.18154684    Trial     4 F0$w9p  
    Mean        0.35770970 JFT$1^n  
    Std Dev     0.11156454 .}==p&(  
    bP18w0>,  
    RpJ7.  
    Compensator Statistics: {JE [  
    Change in back focus: EI_-5TtRD  
    Minimum            :        -1.354815 Oeh A3$|#  
    Maximum            :         1.611296 z\ZnxZ@  
    Mean               :         0.161872 hRf l\Q[  
    Standard Deviation :         0.869664 wJC[[_"3 I  
    lV\iYX2#  
    90% >       0.20977951               64B.7S88  
    80% >       0.22748071               VZ9 p "  
    50% >       0.38667627               ZHTi4JY  
    20% >       0.46553746               ~?\U];l  
    10% >       0.50064115                f,G*e367:  
    }0'LKwIR  
    End of Run. {irc0gI  
    ]?6wU-a  
    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 w6BBu0,KC  
    ?+zFa2J  
    C19N0=  
    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 En\@d@j<u  
    Wga2).j6  
    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                 4X^$"lM  
    80% >       0.22748071                 8dR `T}  
    50% >       0.38667627                 }+@!c%TCx~  
    20% >       0.46553746                 /9br&s$B  
    10% >       0.50064115 x,C8):\t`B  
    0/v]YK.  
    最后这个数值是MTF值呢，还是MTF的公差？ YE`Y t  
    l`"?K D  
    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？？？   /?;'y,(Q  
    v~ >Bbe  
    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  : R%KF/1;/  
    90% >       0.20977951                 @Fc:9a@  
    80% >       0.22748071                 xnMcxys~  
    50% >       0.38667627                 O q$_ q  
    20% >       0.46553746                 g4A{RI  
    10% >       0.50064115 b$klm6nMvm  
    ....... (6$ P/k8  
    #_.J kY  
    4 -.W~C'Q  
    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   AY5iTbL1  
    Mode                : Sensitivities o=R(DK# U  
    Sampling            : 2 7}VqXUwabx  
    Nominal Criterion   : 0.54403234 fz^j3'!\  
    Test Wavelength     : 0.6328 ^m%#1Zd  
    #B5,k|"/,M  
    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？ ?:wb#k)Z/  
    I5M\PK/  
    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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