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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 &LbJT$}V  
    );FJx~b  
    Sv  &[f}S  
    F4K0) ;  
    然后添加了默认公差分析，基本没变 9~l hsH  
    zL\OB?)5J  
    clk[/'1  
    8O Soel  
    然后运行分析的结果如下： lg(bDK m  
    _r2J7&  
    Analysis of Tolerances %*\es7m}  
    tzs</2 G,  
    File : E:\光学设计资料\zemax练习\f500.ZMX mQY_`&Jq  
    Title: $jg*pmR-  
    Date : TUE JUN 21 2011 f"St&q>[s  
    n/h,Lr)Z  
    Units are Millimeters. L: z?Zt)|  
    All changes are computed using linear differences. Y*! qG  
    ahPoEh  
    Paraxial Focus compensation only. %DdJ ^qHI  
    Op_RzZP`  
    WARNING: Solves should be removed prior to tolerancing. n(el]_d  
    Yh>]-SCw  
    Mnemonics: ?]x|Zy  
    TFRN: Tolerance on curvature in fringes. Pcw6!xH  
    TTHI: Tolerance on thickness. +-G<c6 |  
    TSDX: Tolerance on surface decentering in x. [w -l?  
    TSDY: Tolerance on surface decentering in y. ak;*W  
    TSTX: Tolerance on surface tilt in x (degrees). DoeiW=  
    TSTY: Tolerance on surface tilt in y (degrees). C[%OkPR,H  
    TIRR: Tolerance on irregularity (fringes). *guoWPA|Ij  
    TIND: Tolerance on Nd index of refraction. ;v$4$D]L  
    TEDX: Tolerance on element decentering in x. =dFv/F/RW  
    TEDY: Tolerance on element decentering in y. [3@):8  
    TETX: Tolerance on element tilt in x (degrees). 1n@8Kv  
    TETY: Tolerance on element tilt in y (degrees). \.3D~2cU  
    n+PzA[  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. DS'n  
    qBCK40   
    WARNING: Boundary constraints on compensators will be ignored. {\(L%\sV@  
    ;vIrGZV<  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm +gLPhX:`  
    Mode                : Sensitivities `+uhy ,  
    Sampling            : 2 $k2*[sn,  
    Nominal Criterion   : 0.54403234 3#TV5+x*"`  
    Test Wavelength     : 0.6328 AU$Uxwz4  
    D)d~3`=#  
    'UYR5Y>  
    Fields: XY Symmetric Angle in degrees V,G|k!!  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY B~_d^`  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 EcCFbqS4W  
    ,j$Vvz   
    Sensitivity Analysis: %b"\bHH  
    @0SC"CqM  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| TqddOp  
    Type                      Value      Criterion        Change          Value      Criterion        Change iySRY^  
    Fringe tolerance on surface 1 ?G -e](]^<  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 UNkCL4N  
    Change in Focus                :      -0.000000                            0.000000 7=DjI ~  
    Fringe tolerance on surface 2 1SR+m>pL  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 `4~H/'%QB  
    Change in Focus                :       0.000000                            0.000000 tz&y*e&  
    Fringe tolerance on surface 3 dtc IC0:[  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 >`%'4<I  
    Change in Focus                :      -0.000000                            0.000000 a$Cdhx !  
    Thickness tolerance on surface 1 mD/MJt5  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 >J>b>SU=-  
    Change in Focus                :       0.000000                            0.000000 =-}[ ^u1  
    Thickness tolerance on surface 2 th&[Nt7  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 :M6+p'`j  
    Change in Focus                :       0.000000                           -0.000000 n8D xB@DI  
    Decenter X tolerance on surfaces 1 through 3 $.[#0lCI  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 =%> oR  
    Change in Focus                :       0.000000                            0.000000 3dRr/Ilc  
    Decenter Y tolerance on surfaces 1 through 3 =F;.l@:  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Yl.0aS  
    Change in Focus                :       0.000000                            0.000000 &[ ;HYgp  
    Tilt X tolerance on surfaces 1 through 3 (degrees) <E0UK^-}  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 'GL*u#h  
    Change in Focus                :       0.000000                            0.000000 Z"uY}P3  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) MC { 2X  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 j7)Ao*WN  
    Change in Focus                :       0.000000                            0.000000 [Ts"OPb% ~  
    Decenter X tolerance on surface 1 n2I V2^ "  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ]hbyELs  
    Change in Focus                :       0.000000                            0.000000 +fnK /%b  
    Decenter Y tolerance on surface 1 tT79 p.z B  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 izx#3u$P  
    Change in Focus                :       0.000000                            0.000000 Yp:KI7  
    Tilt X tolerance on surface (degrees) 1 jvQ*t_L  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 xSBc-u#< G  
    Change in Focus                :       0.000000                            0.000000 Bdu&V*0g  
    Tilt Y tolerance on surface (degrees) 1 //4Xq8y  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 u3o#{~E/#  
    Change in Focus                :       0.000000                            0.000000 FSRj4e1y1  
    Decenter X tolerance on surface 2 u SR~@Lj ~  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 (S v~2  
    Change in Focus                :       0.000000                            0.000000 A+UU~?3y  
    Decenter Y tolerance on surface 2 ,DZX$Ug~+E  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 uy}%0vLo  
    Change in Focus                :       0.000000                            0.000000 +tD[9b! m  
    Tilt X tolerance on surface (degrees) 2 }@^4,FKJ  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Q"7Gy<  
    Change in Focus                :       0.000000                            0.000000 ?Sb8@S&J  
    Tilt Y tolerance on surface (degrees) 2 ? mhs$g>  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 tu5*Qp\  
    Change in Focus                :       0.000000                            0.000000 d%0~c'D8a  
    Decenter X tolerance on surface 3 vC5n[0  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 5A4&+rdU  
    Change in Focus                :       0.000000                            0.000000 Y9`5G%  
    Decenter Y tolerance on surface 3 $/7pYl\n  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 pm6>_Kz  
    Change in Focus                :       0.000000                            0.000000 :Pv*, qHE  
    Tilt X tolerance on surface (degrees) 3 c-Pw]Ju  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 c?%(Dp E  
    Change in Focus                :       0.000000                            0.000000 Dxk+P!!K  
    Tilt Y tolerance on surface (degrees) 3 ykFJ%sw3X  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Z*FrB58  
    Change in Focus                :       0.000000                            0.000000 6AWKLFMV  
    Irregularity of surface 1 in fringes j6g[N4xr  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 oaK%Ww6~  
    Change in Focus                :       0.000000                            0.000000 chEn|>~  
    Irregularity of surface 2 in fringes Wy%s1iu  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 LB.co4  
    Change in Focus                :       0.000000                            0.000000 O%ug@& S{  
    Irregularity of surface 3 in fringes k}#;Uy=5  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 R9! Uo  
    Change in Focus                :       0.000000                            0.000000 hbc uK&  
    Index tolerance on surface 1 2"-S<zM  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 FP Jd|  
    Change in Focus                :       0.000000                            0.000000 LE%7DW(  
    Index tolerance on surface 2 Q(o!iI:Gts  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 7 K{Nb  
    Change in Focus                :       0.000000                           -0.000000 Kb^>-[Yx  
    E{2Eoj;gq  
    Worst offenders: 1U,1)<z~u  
    Type                      Value      Criterion        Change RO3oP1@B  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 (4%YHS8  
    TSTY   2             0.20000000     0.35349910    -0.19053324 /o2P+Xr8"  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 ${8?N:>t  
    TSTX   2             0.20000000     0.35349910    -0.19053324 OK{xuX8u  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 =GXu 5 8  
    TSTY   1             0.20000000     0.42678383    -0.11724851 +L=*:e\j  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 0W%@gs5d&  
    TSTX   1             0.20000000     0.42678383    -0.11724851 u@3y&b  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 dCFlM&(i  
    TSTY   3             0.20000000     0.42861670    -0.11541563 W k}AmC  
    {bPV)RL:  
    Estimated Performance Changes based upon Root-Sum-Square method: z~\t|Z]G,|  
    Nominal MTF                 :     0.54403234 w%zRHf8C  
    Estimated change            :    -0.36299231 ]1gx#y 2  
    Estimated MTF               :     0.18104003 <vUVP\u~$  
    Tb1U^E:  
    Compensator Statistics: 8_!.!Kde |  
    Change in back focus: JO'>oFv_W  
    Minimum            :        -0.000000 P6Mhbmt9*  
    Maximum            :         0.000000 ]LZ`LL'#Y_  
    Mean               :        -0.000000 Hp|}~xjn  
    Standard Deviation :         0.000000 Cbs5dn(Y  
    J4YBqp  
    Monte Carlo Analysis: (7DXRcr<  
    Number of trials: 20 n$:IVX"2b  
    Urgtg37  
    Initial Statistics: Normal Distribution nP UqMn'  
    ^W7X(LQ*+  
      Trial       Criterion        Change Y\=FLO9  
          1     0.42804416    -0.11598818 wl1m*`$  
    Change in Focus                :      -0.400171 dC<LDxlv  
          2     0.54384387    -0.00018847 tV/Z)fpyH  
    Change in Focus                :       1.018470 CD0VfA>Z  
          3     0.44510003    -0.09893230 T%Pp*1/m7  
    Change in Focus                :      -0.601922 9GdB#k6W`  
          4     0.18154684    -0.36248550 )J(q49  
    Change in Focus                :       0.920681 j( #%tIv  
          5     0.28665820    -0.25737414 9,]5v +  
    Change in Focus                :       1.253875 z 5]bia,  
          6     0.21263372    -0.33139862 *U#m+@\0  
    Change in Focus                :      -0.903878 -@&1`@):{  
          7     0.40051424    -0.14351809 fj,m  
    Change in Focus                :      -1.354815 pA4*bO+  
          8     0.48754161    -0.05649072 M=]5WZO~A  
    Change in Focus                :       0.215922 !rhk $ L  
          9     0.40357468    -0.14045766 2ij# H ;  
    Change in Focus                :       0.281783 ^S#t|rN  
         10     0.26315315    -0.28087919 j'p1q  
    Change in Focus                :      -1.048393 ^ZTGJ(j7~  
         11     0.26120585    -0.28282649 T5O _LCIws  
    Change in Focus                :       1.017611 MEiRj]t  
         12     0.24033815    -0.30369419 \.gEh1HW  
    Change in Focus                :      -0.109292 A`6ra}U<  
         13     0.37164046    -0.17239188 V|MY!uV  
    Change in Focus                :      -0.692430 tD$lNh^  
         14     0.48597489    -0.05805744 Fd\ e*ww'  
    Change in Focus                :      -0.662040 MK}-<&v  
         15     0.21462327    -0.32940907 z{]?h cY  
    Change in Focus                :       1.611296 $ex!!rqN|  
         16     0.43378226    -0.11025008 iGXBqUQ:  
    Change in Focus                :      -0.640081 b.2J]6G  
         17     0.39321881    -0.15081353 DDd|T;8  
    Change in Focus                :       0.914906 ]=F8p2w?  
         18     0.20692530    -0.33710703 6yAA~;*5'  
    Change in Focus                :       0.801607 nF)uTk  
         19     0.51374068    -0.03029165 /b,TpuM^  
    Change in Focus                :       0.947293 tK%c@gGU9  
         20     0.38013374    -0.16389860 D';eTy Y  
    Change in Focus                :       0.667010 y0ckm6^  
    !~-6wN"k  
    Number of traceable Monte Carlo files generated: 20 xeTgV&$@  
    E&~nps8e  
    Nominal     0.54403234 rSV gWr8  
    Best        0.54384387    Trial     2 Cpx+qQt0  
    Worst       0.18154684    Trial     4 q\9d6u=Gm  
    Mean        0.35770970 4-v6=gz.  
    Std Dev     0.11156454 R UTnc  
    1q.(69M  
    J0220 _  
    Compensator Statistics: 2)/NFZ  
    Change in back focus: l!IKUzt)7  
    Minimum            :        -1.354815 {b!7 .Cd=  
    Maximum            :         1.611296 84&XW  
    Mean               :         0.161872 ,7d|O}B  
    Standard Deviation :         0.869664 l*7?Y7FK  
    x|~zHFm6  
    90% >       0.20977951               mxqG-*ch-  
    80% >       0.22748071               :wgfW .w  
    50% >       0.38667627               $;D* n'8Fx  
    20% >       0.46553746               '=cKU0 G#  
    10% >       0.50064115                O%1/ r*  
    +3^NaY`Y  
    End of Run. keqcV23k  
    }C(5-7  
    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 h ; kfh.  
    s'_,:R\VM>  
    PCfo  
    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 Ttv9" z  
    =ak7ld A=2  
    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                 /4C`k=>  
    80% >       0.22748071                 3Xdn62[&  
    50% >       0.38667627                 F1}  
    20% >       0.46553746                 o =9'  
    10% >       0.50064115 k|#Zy,  
    _pSIJ3O  
    最后这个数值是MTF值呢，还是MTF的公差？ my,x9UPs  
    3A R%&:-  
    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？？？   K/Jk[29"\  
    u33zceE8  
    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  : @LHtt/&  
    90% >       0.20977951                 ?KCxrzf  
    80% >       0.22748071                 *XOS.$zGz  
    50% >       0.38667627                 Y8t Nwh  
    20% >       0.46553746                 excrXx  
    10% >       0.50064115 F*X%N_n  
    ....... ?.~]mvOR  
    w@2~`<Hk'"  
    CHg]Ul  
    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   xdCs5ko  
    Mode                : Sensitivities ( -xR7A  
    Sampling            : 2 \N4d_ fPj  
    Nominal Criterion   : 0.54403234 /XjN%|  
    Test Wavelength     : 0.6328 [Yn;G7cK  
    6/VNuQ_#  
    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？ a4Ls^  
    u mqLKf=x!  
    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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