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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 %I0}4$  
    =J xFp, Xr  
    WL:0R>0  
    _ Mn6L=  
    然后添加了默认公差分析，基本没变 1]Lh'.1^  
    -;/ Y  
    p#=;)1  
    ^cn@?k((A  
    然后运行分析的结果如下： a'A s  
    (l_:XG)7~b  
    Analysis of Tolerances 8i[LR#D)  
    _#vGs:-x&  
    File : E:\光学设计资料\zemax练习\f500.ZMX 1$(  
    Title: -N4z-ozhC  
    Date : TUE JUN 21 2011 \Z'/+}^h  
    9(OAKUQ  
    Units are Millimeters. - wWRm  
    All changes are computed using linear differences. R;'?;I  
    Q.E_:=*H  
    Paraxial Focus compensation only. LihdZ )  
    E-F5y  
    WARNING: Solves should be removed prior to tolerancing. MQ9vPgh  
    R"{l[9j4>  
    Mnemonics: I^:F)a:  
    TFRN: Tolerance on curvature in fringes. HU9p !I.  
    TTHI: Tolerance on thickness. LD_M 3 P  
    TSDX: Tolerance on surface decentering in x. /=/ HB  
    TSDY: Tolerance on surface decentering in y. xW0Z'==  
    TSTX: Tolerance on surface tilt in x (degrees). Z /h|\SyJ  
    TSTY: Tolerance on surface tilt in y (degrees). qRl/Sl#F  
    TIRR: Tolerance on irregularity (fringes). j%WY ,2P  
    TIND: Tolerance on Nd index of refraction. UFf,+4q  
    TEDX: Tolerance on element decentering in x. jzMg'z/@J  
    TEDY: Tolerance on element decentering in y. GMe0;StT  
    TETX: Tolerance on element tilt in x (degrees). $P;UoqG<&  
    TETY: Tolerance on element tilt in y (degrees). }<&d]N  
    H:{?3gk.P3  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. C5;wf3  
    5zVQ;;9  
    WARNING: Boundary constraints on compensators will be ignored. #fj[kq)&S  
    qy&\Xgn;GA  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm z{/LX \  
    Mode                : Sensitivities 2qXo{C3  
    Sampling            : 2 8$m1eQ`{  
    Nominal Criterion   : 0.54403234 B.RRdK+:  
    Test Wavelength     : 0.6328 %l;*I?0H  
    J^h'9iQpi  
    03F3q4"  
    Fields: XY Symmetric Angle in degrees y+RRg[6|  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 506V0]`/  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 }PmTR4F!}  
    4i`S+`#  
    Sensitivity Analysis: 2+Zti8  
    qCQu^S' iD  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ;:?*t{r4#  
    Type                      Value      Criterion        Change          Value      Criterion        Change >3!DOv   
    Fringe tolerance on surface 1 4&]%e6,jH  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 C#h76fpH  
    Change in Focus                :      -0.000000                            0.000000 @Kp1k> ov  
    Fringe tolerance on surface 2 /3F<=zikO  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 #@E(<Pu4`  
    Change in Focus                :       0.000000                            0.000000 +dM.-wW  
    Fringe tolerance on surface 3 PLdf_/]-   
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 g}YToOs  
    Change in Focus                :      -0.000000                            0.000000 3; A$<s  
    Thickness tolerance on surface 1 {KsVK4\r  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 <"A#Eok|4  
    Change in Focus                :       0.000000                            0.000000 nNu[c[V  
    Thickness tolerance on surface 2 L&QtHSzy  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 oc:x&`j  
    Change in Focus                :       0.000000                           -0.000000 M/l95fp   
    Decenter X tolerance on surfaces 1 through 3 FCAJavOGH  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 /cYk+c  
    Change in Focus                :       0.000000                            0.000000 hR0]8l|  
    Decenter Y tolerance on surfaces 1 through 3 ]1tN|ODY*W  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 77tZp @>hn  
    Change in Focus                :       0.000000                            0.000000 RPY 6Wh| 4  
    Tilt X tolerance on surfaces 1 through 3 (degrees) O/$ v69:  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ExQ--!AC=  
    Change in Focus                :       0.000000                            0.000000 O'fc/cvh='  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 9>IsqYc  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 aX]y`  
    Change in Focus                :       0.000000                            0.000000 7> )l{7  
    Decenter X tolerance on surface 1 v=>3"!*  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 q 7`   
    Change in Focus                :       0.000000                            0.000000 K)Ge  
    Decenter Y tolerance on surface 1 ..aK sSm(  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 =uS8>.Qj  
    Change in Focus                :       0.000000                            0.000000 TD%WJ9K\  
    Tilt X tolerance on surface (degrees) 1 bje' Oolc  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Nl=+.d6 Qo  
    Change in Focus                :       0.000000                            0.000000 pRmEryR(U  
    Tilt Y tolerance on surface (degrees) 1 [XxA.S)x3  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 #|q;t   
    Change in Focus                :       0.000000                            0.000000 ijg,'a~3E  
    Decenter X tolerance on surface 2 IN>TsTo  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ~O8] 3+U  
    Change in Focus                :       0.000000                            0.000000 S;BP`g<l=  
    Decenter Y tolerance on surface 2 9z5z  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 {8_:4`YZ  
    Change in Focus                :       0.000000                            0.000000 ,I=O"z>9  
    Tilt X tolerance on surface (degrees) 2 80cm6?,xu  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Mg&HRE  
    Change in Focus                :       0.000000                            0.000000 [&fWF~D-p<  
    Tilt Y tolerance on surface (degrees) 2 !SN6 ?Xy  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 :3:)E  
    Change in Focus                :       0.000000                            0.000000 W%w82@'  
    Decenter X tolerance on surface 3 N#mK7|\c?:  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 WI%zr2T  
    Change in Focus                :       0.000000                            0.000000 D=<t;+|  
    Decenter Y tolerance on surface 3 N%: D8\qx  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 <x^IwS  
    Change in Focus                :       0.000000                            0.000000 dr}O+7_7%-  
    Tilt X tolerance on surface (degrees) 3 Ed4_<:  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 G6f %/m`  
    Change in Focus                :       0.000000                            0.000000 l8eT{!4  
    Tilt Y tolerance on surface (degrees) 3 {3jm%ex  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 CR P7U  
    Change in Focus                :       0.000000                            0.000000 9.^-us1  
    Irregularity of surface 1 in fringes DM+sjn  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Q^\{Zg)p  
    Change in Focus                :       0.000000                            0.000000 dV'6m@C  
    Irregularity of surface 2 in fringes F@oT7NB/n  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 @:I \\S@bN  
    Change in Focus                :       0.000000                            0.000000 34HFrMi  
    Irregularity of surface 3 in fringes 3~#ZE;>#  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 *vEU}SxRuv  
    Change in Focus                :       0.000000                            0.000000 jp"XS  
    Index tolerance on surface 1 Ey 0>L  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 MA l{66  
    Change in Focus                :       0.000000                            0.000000 ,!xz*o+#@  
    Index tolerance on surface 2 # r2$ZCo3o  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 K#%O3RRs  
    Change in Focus                :       0.000000                           -0.000000 jqV)V>M.  
    yN%3w0v  
    Worst offenders: ] `b<"  
    Type                      Value      Criterion        Change +F#=`+V  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 3^uL`ETm@  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ufHuI*  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 1==P.d(  
    TSTX   2             0.20000000     0.35349910    -0.19053324 rerUM*0  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 :T8u?@ .  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ZP]2/;h  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 WoC\a^V  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ^' edE5  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 x0N-[//YV  
    TSTY   3             0.20000000     0.42861670    -0.11541563 E,"b*l.  
    /S-/SF:>g  
    Estimated Performance Changes based upon Root-Sum-Square method: T +|J19  
    Nominal MTF                 :     0.54403234 !8H!Fj`|j  
    Estimated change            :    -0.36299231 3 LZL!^ 5N  
    Estimated MTF               :     0.18104003 )of5229  
    8+@1wks  
    Compensator Statistics: rF <iWM=  
    Change in back focus: HXl r  
    Minimum            :        -0.000000 7zz(#  
    Maximum            :         0.000000 bqf]$}/8k  
    Mean               :        -0.000000 7N-CtQnv  
    Standard Deviation :         0.000000 ,4h! "c  
    R(n0!h4  
    Monte Carlo Analysis: k}+MvGq  
    Number of trials: 20 %BT)oH}  
    `&"H* Ie  
    Initial Statistics: Normal Distribution x0TnS #  
    J7&.>y1%  
      Trial       Criterion        Change Ynk><0g6  
          1     0.42804416    -0.11598818 jSOa   
    Change in Focus                :      -0.400171 wd2P/y42;;  
          2     0.54384387    -0.00018847 ~0Q\Lp);  
    Change in Focus                :       1.018470 Xm0&U?dZB  
          3     0.44510003    -0.09893230 NUxAv= xl  
    Change in Focus                :      -0.601922 Y_aP:+  
          4     0.18154684    -0.36248550 wAj(v6  
    Change in Focus                :       0.920681 |{}d5Z"5;}  
          5     0.28665820    -0.25737414 ID{Pzmt-  
    Change in Focus                :       1.253875 ^| a&%wxA  
          6     0.21263372    -0.33139862 c=jTs+h'  
    Change in Focus                :      -0.903878 H8=vQy  
          7     0.40051424    -0.14351809 qAuUe=w%p  
    Change in Focus                :      -1.354815 Sf.8Ibw  
          8     0.48754161    -0.05649072 7!` C TE  
    Change in Focus                :       0.215922 2=Vkjh-  
          9     0.40357468    -0.14045766 0YsN82IDD  
    Change in Focus                :       0.281783 %'D:bi5  
         10     0.26315315    -0.28087919 )=SYJ-ta<  
    Change in Focus                :      -1.048393 :a^,Ei-&  
         11     0.26120585    -0.28282649 3ec==.  
    Change in Focus                :       1.017611 OA8b_k~  
         12     0.24033815    -0.30369419 ^0 ,&R\e+  
    Change in Focus                :      -0.109292 ;]O 7^s#v  
         13     0.37164046    -0.17239188 !]jNVg  
    Change in Focus                :      -0.692430 j_YZ(: =  
         14     0.48597489    -0.05805744 L{o >D"  
    Change in Focus                :      -0.662040 DlQ[}5STF  
         15     0.21462327    -0.32940907 )4o=t.O\K  
    Change in Focus                :       1.611296 Ow&'sR'CX  
         16     0.43378226    -0.11025008 ?-6x]l=]  
    Change in Focus                :      -0.640081 0I ND9h. %  
         17     0.39321881    -0.15081353 BR0p0%  
    Change in Focus                :       0.914906 szM=U$jKq  
         18     0.20692530    -0.33710703 S92 !jp/  
    Change in Focus                :       0.801607 6u]OXP A|  
         19     0.51374068    -0.03029165 1PT_1[eAR  
    Change in Focus                :       0.947293 EF7|%N  
         20     0.38013374    -0.16389860 qT-nD}  
    Change in Focus                :       0.667010 A5>gLhl7  
    Aaw:B?4)  
    Number of traceable Monte Carlo files generated: 20 N4GIb 6  
    IB]VPj5  
    Nominal     0.54403234 . AQ3zpy5B  
    Best        0.54384387    Trial     2 kI1{>vYD  
    Worst       0.18154684    Trial     4  M$-(4 0  
    Mean        0.35770970 iJp!ROI  
    Std Dev     0.11156454 @0@'6J04  
    )*QTxN  
    J W yoh|  
    Compensator Statistics: %+OPas8C  
    Change in back focus: q'8@0FT0  
    Minimum            :        -1.354815 %w|3:  
    Maximum            :         1.611296 @OL3&R  
    Mean               :         0.161872 fB ,!|u  
    Standard Deviation :         0.869664 #L*@~M^]  
    |(8Hk@\CT>  
    90% >       0.20977951               BKlc{=  
    80% >       0.22748071               @snLE?g j  
    50% >       0.38667627               5<GRi "7A@  
    20% >       0.46553746               moM&2rgdrQ  
    10% >       0.50064115                bJMcI8`  
    Q9'p3"yoE  
    End of Run. k~EPVJh"  
    kviSQM2  
    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 @IKe<{w  
    l?<z1Acd&  
    N)I T?  
    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 L" ^366M!  
    ny? m&;^r:  
    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                 X',0MBQ0  
    80% >       0.22748071                 [)0k}  
    50% >       0.38667627                 0!\q  
    20% >       0.46553746                 x#VUEu]8  
    10% >       0.50064115 cW^) $>A  
    O;t?@!_  
    最后这个数值是MTF值呢，还是MTF的公差？ \k-juF80  
    =0yJ2[R7Do  
    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？？？   yC*BOJS  
    w:+#,,rwzV  
    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  : gv-k}2u_  
    90% >       0.20977951                 MEUqQ4/Gl  
    80% >       0.22748071                 2jC\yY |PN  
    50% >       0.38667627                 }iAi`_\0;  
    20% >       0.46553746                 c Zr4  
    10% >       0.50064115 4iW 2hV@m  
    ....... >YhqL62!a  
    Pc1N~?}.  
    *JXJ 2  
    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   *Rd&4XG  
    Mode                : Sensitivities B"v=Fr[  
    Sampling            : 2 M-gjS6c\3  
    Nominal Criterion   : 0.54403234 9n'p7(s%  
    Test Wavelength     : 0.6328 +n dyR  
    %54![-@  
    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？ UsTPNQj  
    f7'%AuSQ(  
    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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