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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 hNo>)$v!s  
    rM=A"  
    z=_{jjs  
    Hc%\9{zH  
    然后添加了默认公差分析，基本没变 ,O)\,tg  
    <xjv7`G7  
    %Nl(Y@dD*  
    26VdRy{[  
    然后运行分析的结果如下： B/hHkOoo  
    .6F3;bg R7  
    Analysis of Tolerances Ux T[  
    4Z9 3 g {  
    File : E:\光学设计资料\zemax练习\f500.ZMX 7 aD&\?  
    Title: 5 hadA>d  
    Date : TUE JUN 21 2011 l_-n&(N2<[  
    *m@w^In^  
    Units are Millimeters. n{r#K_  
    All changes are computed using linear differences. 08?MS_  
    7U`S9DDwq  
    Paraxial Focus compensation only. J8BT%  
    o=# [^Zv  
    WARNING: Solves should be removed prior to tolerancing. Z:J.FI@  
    dKQV4dc>  
    Mnemonics: $jh>zf  
    TFRN: Tolerance on curvature in fringes. W.D3$  
    TTHI: Tolerance on thickness. -b0'Q  
    TSDX: Tolerance on surface decentering in x. )$h9Y   
    TSDY: Tolerance on surface decentering in y. arQ %  
    TSTX: Tolerance on surface tilt in x (degrees). ,1;8DfVZV  
    TSTY: Tolerance on surface tilt in y (degrees).  M .`  
    TIRR: Tolerance on irregularity (fringes). sVdK^|j  
    TIND: Tolerance on Nd index of refraction. H!.D2J   
    TEDX: Tolerance on element decentering in x. LA`V qJ  
    TEDY: Tolerance on element decentering in y. X5|/s::u  
    TETX: Tolerance on element tilt in x (degrees). 6Su@a%=j  
    TETY: Tolerance on element tilt in y (degrees). /+t[,  
    G0 /vn9&  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ;Fem<p)V  
    3|+f si)x  
    WARNING: Boundary constraints on compensators will be ignored. }R&5qpl  
    Qb't*2c%  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm !GGGh0Bj  
    Mode                : Sensitivities IPR tm!  
    Sampling            : 2 _d| 62VS  
    Nominal Criterion   : 0.54403234 71"JL",  
    Test Wavelength     : 0.6328 Y0B1xL@  
    G6 8Nv:  
    .e2A*9,  
    Fields: XY Symmetric Angle in degrees `$sY^EX  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY nlebFDb7  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 L0mnU)Q}C  
    Fv);5LD  
    Sensitivity Analysis: %L13Jsw  
    hJ[mf1je=  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| \}x'>6zr2  
    Type                      Value      Criterion        Change          Value      Criterion        Change "8muMa8Q%  
    Fringe tolerance on surface 1 5nx<,-N*BP  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 &u1g7# #  
    Change in Focus                :      -0.000000                            0.000000 )Bn>/-  
    Fringe tolerance on surface 2 xOL)Pjo /m  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 CC>fm 1#i\  
    Change in Focus                :       0.000000                            0.000000 uB <F.!3  
    Fringe tolerance on surface 3 4,U}Am1Q  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ljJz#+H2_  
    Change in Focus                :      -0.000000                            0.000000 xeHb89GnoQ  
    Thickness tolerance on surface 1 2yQ}Lxr(  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 GX@W"y  
    Change in Focus                :       0.000000                            0.000000 _rMT{q3  
    Thickness tolerance on surface 2 )jk1S  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 u.kYp  
    Change in Focus                :       0.000000                           -0.000000 .i+* #djx  
    Decenter X tolerance on surfaces 1 through 3 -N7xO)  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 |#&V:GZp  
    Change in Focus                :       0.000000                            0.000000 Itr7lv'5xx  
    Decenter Y tolerance on surfaces 1 through 3 ]`@]<6  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 '>e79f-O)  
    Change in Focus                :       0.000000                            0.000000 9y^kb+  
    Tilt X tolerance on surfaces 1 through 3 (degrees) T")i+v  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 <4Q12:  
    Change in Focus                :       0.000000                            0.000000 lkg"'p{  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 3@yTzaq6  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 i$bzdc#s  
    Change in Focus                :       0.000000                            0.000000 j6e}7  
    Decenter X tolerance on surface 1   ^RV  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 "X5_-l  
    Change in Focus                :       0.000000                            0.000000 ;V~rWzKM(  
    Decenter Y tolerance on surface 1 CzSZ>E$%U  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 %'"HGZn b  
    Change in Focus                :       0.000000                            0.000000 &]VQR2J}:  
    Tilt X tolerance on surface (degrees) 1 Zlk,])9Q  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 {Vxc6,=  
    Change in Focus                :       0.000000                            0.000000 6QII&Fg  
    Tilt Y tolerance on surface (degrees) 1 |"R_-U  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 DikdC5>O>m  
    Change in Focus                :       0.000000                            0.000000 `V&1]C8x  
    Decenter X tolerance on surface 2 CZyz;Jtk  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ^Ti_<<X  
    Change in Focus                :       0.000000                            0.000000 P{S\pWZkk  
    Decenter Y tolerance on surface 2 _~;&)cn,0  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 2$ |]Vj*Zs  
    Change in Focus                :       0.000000                            0.000000 j2 }  
    Tilt X tolerance on surface (degrees) 2 zJ;>.0  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 V06CCy8n  
    Change in Focus                :       0.000000                            0.000000 !/j,hO4Z4  
    Tilt Y tolerance on surface (degrees) 2 }!%JYG^!D  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 S9 G+#[.|  
    Change in Focus                :       0.000000                            0.000000 Tm)GC_  
    Decenter X tolerance on surface 3 GIm " )}W  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 (#6AKr9K  
    Change in Focus                :       0.000000                            0.000000 sno`=+|U]  
    Decenter Y tolerance on surface 3 (#!] fF"!x  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 oZvA~]x9\  
    Change in Focus                :       0.000000                            0.000000 >ZT& `E  
    Tilt X tolerance on surface (degrees) 3 VEj$^bpp5s  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ?;|@T ty%  
    Change in Focus                :       0.000000                            0.000000 c,y|c`T 2  
    Tilt Y tolerance on surface (degrees) 3 <4bz/^  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 @Od^k#  
    Change in Focus                :       0.000000                            0.000000 Wy<[(Pd   
    Irregularity of surface 1 in fringes T[;; 9z  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 e~{^oM  
    Change in Focus                :       0.000000                            0.000000 Eh\ 1O(a(  
    Irregularity of surface 2 in fringes l|YT[LR7  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 &{%MjKJ._  
    Change in Focus                :       0.000000                            0.000000 7}be>(  
    Irregularity of surface 3 in fringes Rj[ hhSx 2  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 2_;]  
    Change in Focus                :       0.000000                            0.000000 hv* >%p  
    Index tolerance on surface 1 6HoqEku/Q  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 \dRzS@l  
    Change in Focus                :       0.000000                            0.000000 ~U6" ?  
    Index tolerance on surface 2 CjZZm^O  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 n*Q`g@`  
    Change in Focus                :       0.000000                           -0.000000 P|e`^Frxt  
    bGv* -;*  
    Worst offenders: o=pt_!i/  
    Type                      Value      Criterion        Change ?c!:81+\  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 z[fB!O  
    TSTY   2             0.20000000     0.35349910    -0.19053324 g"wxC@IR  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 i+f7  
    TSTX   2             0.20000000     0.35349910    -0.19053324 A\K,_&x1Z  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 [oV{83f  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Q1Ux!$_  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 gQ37>  
    TSTX   1             0.20000000     0.42678383    -0.11724851 0n3D~Xzd  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 '>@4(=I  
    TSTY   3             0.20000000     0.42861670    -0.11541563 _%Bz,C8  
    ?O??cjiA@  
    Estimated Performance Changes based upon Root-Sum-Square method: x(8n 9Q>  
    Nominal MTF                 :     0.54403234 `)32&\  
    Estimated change            :    -0.36299231 ?GdsOg^  
    Estimated MTF               :     0.18104003 nnNv0 ?>d(  
    <I; 5wv  
    Compensator Statistics: #~^btL'dHF  
    Change in back focus: UVz/n68\k7  
    Minimum            :        -0.000000 +$47v$p  
    Maximum            :         0.000000 "PMQyzl  
    Mean               :        -0.000000 < f(?T`  
    Standard Deviation :         0.000000 .NJ|p=fy  
    Yd:Q`#7A  
    Monte Carlo Analysis: MIq"Wy|Zs  
    Number of trials: 20 %aU4,j^],o  
    c'Z: 9?#5  
    Initial Statistics: Normal Distribution x4m 5JDC  
     H;NbQ  
      Trial       Criterion        Change k[\a)WcY8  
          1     0.42804416    -0.11598818 ['cz;2{:W  
    Change in Focus                :      -0.400171 0VN7/=n|  
          2     0.54384387    -0.00018847 $5AC1g'  
    Change in Focus                :       1.018470 %_MEfuL  
          3     0.44510003    -0.09893230 - v]Qhf&>  
    Change in Focus                :      -0.601922  G2`${aMS  
          4     0.18154684    -0.36248550 dC.bt|#Oz  
    Change in Focus                :       0.920681 dAc ?O-~  
          5     0.28665820    -0.25737414 3e%nA8?  
    Change in Focus                :       1.253875 mN*?%t  
          6     0.21263372    -0.33139862 ESTM$k }X  
    Change in Focus                :      -0.903878 h[kU<mU"T  
          7     0.40051424    -0.14351809 m:uPEpcU  
    Change in Focus                :      -1.354815 [dB$U}SEj  
          8     0.48754161    -0.05649072 k$N0lR4:p  
    Change in Focus                :       0.215922  c 6"Ib)  
          9     0.40357468    -0.14045766 ^s&W>hTX:  
    Change in Focus                :       0.281783 ~S*b  
         10     0.26315315    -0.28087919 |a-fE]{7  
    Change in Focus                :      -1.048393 rh!;|xB|+  
         11     0.26120585    -0.28282649 DkDoA;m  
    Change in Focus                :       1.017611 mM_ k ^4:  
         12     0.24033815    -0.30369419 irbw'^;y  
    Change in Focus                :      -0.109292 |4;UyHh  
         13     0.37164046    -0.17239188 fE]XWA4U  
    Change in Focus                :      -0.692430 "?3`  
         14     0.48597489    -0.05805744 edipA P~!  
    Change in Focus                :      -0.662040 * **a2Z/(  
         15     0.21462327    -0.32940907 IXpc,l `  
    Change in Focus                :       1.611296 _{4^|{>Pv  
         16     0.43378226    -0.11025008 Io  n~  
    Change in Focus                :      -0.640081 +lE90y  
         17     0.39321881    -0.15081353 wi_'iv  
    Change in Focus                :       0.914906 4;<ut$G  
         18     0.20692530    -0.33710703 jZteooJG|  
    Change in Focus                :       0.801607 /(hUfYm0  
         19     0.51374068    -0.03029165 NI aFI(  
    Change in Focus                :       0.947293 3Fs5RC~a  
         20     0.38013374    -0.16389860 /mA,F;   
    Change in Focus                :       0.667010 LzML%J62  
    oDn|2Sdqd  
    Number of traceable Monte Carlo files generated: 20 v+G=E2Lhv  
    B07v^!Z>  
    Nominal     0.54403234 AY,].Zg[  
    Best        0.54384387    Trial     2 0.Ta Xbi  
    Worst       0.18154684    Trial     4 ICC%,$C~l  
    Mean        0.35770970 .uF[C{RnO  
    Std Dev     0.11156454 Jrxz'9qRG  
    q?):oJ  
    E&`Nh5JfC  
    Compensator Statistics: H[ m <RaG8  
    Change in back focus: CyDV r  
    Minimum            :        -1.354815 U75Jp%bL  
    Maximum            :         1.611296 rHjq1-t  
    Mean               :         0.161872 v&a4^s  
    Standard Deviation :         0.869664 ~PnTaAPJ  
    /w(e  
    90% >       0.20977951               +Q$h ]^>~  
    80% >       0.22748071               X] %itA  
    50% >       0.38667627               0@I S  
    20% >       0.46553746               nUS| sh  
    10% >       0.50064115                #bH_Dg5I  
    .8(OT./  
    End of Run. Fqy\CMC  
    ,:LA.o}h  
    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 }%7 NF*  
    x'<K\qp{{  
    +{<#(}  
    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 >-8cU_m7s  
    $5x ,6[&  
    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                 0lhVqy}:}o  
    80% >       0.22748071                 yKO`rtP  
    50% >       0.38667627                 sI{ M  
    20% >       0.46553746                 qkiI/nH3  
    10% >       0.50064115 s"t$0cH9  
    L 4!{h|  
    最后这个数值是MTF值呢，还是MTF的公差？ /!c${W!sY  
    |yx6X{$k  
    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？？？   xlQBe-Wg  
    YW7b)u Yf  
    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  : rE.;g^4p  
    90% >       0.20977951                 huh6t !  
    80% >       0.22748071                 t*1fLumXR  
    50% >       0.38667627                 Ng~FEl  
    20% >       0.46553746                 !xo{-@@wS  
    10% >       0.50064115 T?ZRiR)@  
    ....... Bf~vA4  
    r{L> F]Tw  
    U@uGNMKR  
    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   l5!|I:/*;  
    Mode                : Sensitivities 7:plQ !7^  
    Sampling            : 2 8]/bK5`  
    Nominal Criterion   : 0.54403234 Vc\MV0lr  
    Test Wavelength     : 0.6328 chM%]|gey  
    <Tzrj1"Q3  
    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？ '3 /4?wi  
    BC&S>#\  
    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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