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    [讨论]公差分析结果的疑问 [复制链接]

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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 ):5M +  
    u301xc,N<z  
    lk/[xQ/  
    umJ!j&(  
    然后添加了默认公差分析，基本没变 eWw# T^  
    (;6vT'hE  
    6-6ha7]s  
    #*|Gp_l+%  
    然后运行分析的结果如下： w;=g$Bn  
    T-)lnrs^  
    Analysis of Tolerances !=SBeq  
    *74VrAo  
    File : E:\光学设计资料\zemax练习\f500.ZMX ekV|a1)  
    Title: aEvW<jHh  
    Date : TUE JUN 21 2011 VlbS\Y.  
    d(!g9H  
    Units are Millimeters. JK=0juv<E  
    All changes are computed using linear differences. fnZ?YzLI  
    n=1_-)  
    Paraxial Focus compensation only. 5N /NUs   
    #[B]\HO  
    WARNING: Solves should be removed prior to tolerancing. sO$X5S C9  
    j.O+e|kxU  
    Mnemonics: 7^<{aE:  
    TFRN: Tolerance on curvature in fringes. mR3-+dB/  
    TTHI: Tolerance on thickness. 1n-+IR"  
    TSDX: Tolerance on surface decentering in x. !U[/P6 +0  
    TSDY: Tolerance on surface decentering in y. jBLLx{  
    TSTX: Tolerance on surface tilt in x (degrees). !L?diR  
    TSTY: Tolerance on surface tilt in y (degrees). jn,_Ncd#  
    TIRR: Tolerance on irregularity (fringes). W^"C|4G}  
    TIND: Tolerance on Nd index of refraction. K}a3Bj,  
    TEDX: Tolerance on element decentering in x.  J]4pPDm  
    TEDY: Tolerance on element decentering in y. bg/a5$t  
    TETX: Tolerance on element tilt in x (degrees). /O {iL:`  
    TETY: Tolerance on element tilt in y (degrees). `E:&a]ul  
    J *nWCL  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. JZ>E<U9&  
    I:=rwnd  
    WARNING: Boundary constraints on compensators will be ignored. pr.+r?la]  
    /+JHnedK  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 2|}`?bY]i`  
    Mode                : Sensitivities 2uT"LW/(H  
    Sampling            : 2 'MK"*W8QRM  
    Nominal Criterion   : 0.54403234 V*j1[d  
    Test Wavelength     : 0.6328 Dhze2q)o  
    lNbAt4]}f(  
    2Y1y;hCK  
    Fields: XY Symmetric Angle in degrees ~pWV[oUD  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY c5- 56 Q  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 GJj}|+|  
    +rWcfXOHM  
    Sensitivity Analysis: <Gw>}/-^  
    -J]j=  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| }-N4D"d4o  
    Type                      Value      Criterion        Change          Value      Criterion        Change '4e, e|r  
    Fringe tolerance on surface 1 H{U(Rt]K  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 kkU#0p?7  
    Change in Focus                :      -0.000000                            0.000000 <s wfYT!N  
    Fringe tolerance on surface 2 h\lyt(.s  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Q$58 K9  
    Change in Focus                :       0.000000                            0.000000 tFvXVfml  
    Fringe tolerance on surface 3  `;HZO8  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 M.u1SB0  
    Change in Focus                :      -0.000000                            0.000000 *|({(aZ  
    Thickness tolerance on surface 1 . ytxe!O  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 T o$D [-  
    Change in Focus                :       0.000000                            0.000000 JsK_q9]$e  
    Thickness tolerance on surface 2 k, >*.Yoh  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 b"pN;v  
    Change in Focus                :       0.000000                           -0.000000 moCr4*jDX,  
    Decenter X tolerance on surfaces 1 through 3 %v)+]Ds{  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 zXaA5rZO  
    Change in Focus                :       0.000000                            0.000000 ,{Ga7rH*   
    Decenter Y tolerance on surfaces 1 through 3 %G/(7l[W  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 W4&Itj  
    Change in Focus                :       0.000000                            0.000000 7 0Wy]8<P  
    Tilt X tolerance on surfaces 1 through 3 (degrees) p|n!R $_g\  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 FM,o&0HSd  
    Change in Focus                :       0.000000                            0.000000 0lLg uBW@  
    Tilt Y tolerance on surfaces 1 through 3 (degrees)  N~vK8j@  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 'b:UafV  
    Change in Focus                :       0.000000                            0.000000 ;MH_pE/m  
    Decenter X tolerance on surface 1 ]FEsN6  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 OMm'm\+/  
    Change in Focus                :       0.000000                            0.000000 [Wn6d:  
    Decenter Y tolerance on surface 1 4Ul*`/d  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 nj=nSD  
    Change in Focus                :       0.000000                            0.000000 B4t,@,\O  
    Tilt X tolerance on surface (degrees) 1 [PH56f  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 gQ$0 |0O  
    Change in Focus                :       0.000000                            0.000000 ;7U"wI_~c  
    Tilt Y tolerance on surface (degrees) 1 &UIS17cT  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ,% *Jm  
    Change in Focus                :       0.000000                            0.000000 m2v'zJd}g  
    Decenter X tolerance on surface 2 |\T!,~  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 R47tg&k6[  
    Change in Focus                :       0.000000                            0.000000 S9{&.[O  
    Decenter Y tolerance on surface 2 WQBpU?O  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 9t+:L(*pK  
    Change in Focus                :       0.000000                            0.000000 U"OA m}  
    Tilt X tolerance on surface (degrees) 2 [/Xc},HbMe  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Sh(XFUJ  
    Change in Focus                :       0.000000                            0.000000 91|~KR)  
    Tilt Y tolerance on surface (degrees) 2 R_gON*9  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 [[ uZCKi  
    Change in Focus                :       0.000000                            0.000000 :LLz$[c8  
    Decenter X tolerance on surface 3 xV.UM8  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 EfqC_,J*3  
    Change in Focus                :       0.000000                            0.000000 ^~W s4[Guo  
    Decenter Y tolerance on surface 3 Y@MFH>*  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 UQO?hZ!y/.  
    Change in Focus                :       0.000000                            0.000000 S4D~`"4 $/  
    Tilt X tolerance on surface (degrees) 3 ;"]?&ri  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 kk ZMoK  
    Change in Focus                :       0.000000                            0.000000 O#`y;%  
    Tilt Y tolerance on surface (degrees) 3 3Y=uBl  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 So]O`RJv  
    Change in Focus                :       0.000000                            0.000000 V"5LNtf  
    Irregularity of surface 1 in fringes T1M>N  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 mhMRY9ahB  
    Change in Focus                :       0.000000                            0.000000 15ImwQ  
    Irregularity of surface 2 in fringes $j&2bO 5M  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 LX7<+`aa  
    Change in Focus                :       0.000000                            0.000000 iCdq-r/r!6  
    Irregularity of surface 3 in fringes w"AO~LF  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 `q+Ug  
    Change in Focus                :       0.000000                            0.000000 %:Y'+!bX  
    Index tolerance on surface 1 ew1bb K>  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 LEA^o"NW.  
    Change in Focus                :       0.000000                            0.000000 v2}>/b)  
    Index tolerance on surface 2 BV eIj }  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 hEAP,)>F  
    Change in Focus                :       0.000000                           -0.000000 Xagz(tm/  
    Rip[  
    Worst offenders: Eg0qY\'  
    Type                      Value      Criterion        Change D`NQEt"(  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 z6'l" D'h  
    TSTY   2             0.20000000     0.35349910    -0.19053324 #.|MV}6rQ  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 ]Ab$IK Y  
    TSTX   2             0.20000000     0.35349910    -0.19053324 CM 8Ub%  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 cLm{gd4 W  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ~}ba2dU8  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 2x:aMWh  
    TSTX   1             0.20000000     0.42678383    -0.11724851 o_?A^u  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 M~-jPY,+  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ;xjw'%n,  
    *7K)J8kq  
    Estimated Performance Changes based upon Root-Sum-Square method: gF&HJF 0x  
    Nominal MTF                 :     0.54403234 H~~>ut6`  
    Estimated change            :    -0.36299231 e`;U9Z  
    Estimated MTF               :     0.18104003 e! 0Y`lQ  
    #RP7?yGM,  
    Compensator Statistics: !\|L(Paf  
    Change in back focus: B8 R&Q8Q  
    Minimum            :        -0.000000 Jl{g"N{2u'  
    Maximum            :         0.000000 fe7DS)U  
    Mean               :        -0.000000 -](3iPy}  
    Standard Deviation :         0.000000 U&L?IT=x  
    X;3gKiD  
    Monte Carlo Analysis: B2)SNhF2Y  
    Number of trials: 20 ])mYE }g  
    +t p@Tb  
    Initial Statistics: Normal Distribution U\UlQ p?  
    |"k+j_/+  
      Trial       Criterion        Change Yjix]lUXVf  
          1     0.42804416    -0.11598818 }+BbwBm&  
    Change in Focus                :      -0.400171 )X5en=[)O  
          2     0.54384387    -0.00018847 E(0[/N~  
    Change in Focus                :       1.018470 T<~?7-O"  
          3     0.44510003    -0.09893230 a'YK1QX  
    Change in Focus                :      -0.601922 xkmqf7w  
          4     0.18154684    -0.36248550 8% `Jf`  
    Change in Focus                :       0.920681 H1a<&7  
          5     0.28665820    -0.25737414 =l1O9/\9  
    Change in Focus                :       1.253875 ;09U*S$eK  
          6     0.21263372    -0.33139862 I] 0 D*z  
    Change in Focus                :      -0.903878 ,B$m8wlI|  
          7     0.40051424    -0.14351809 NEcE -7aT  
    Change in Focus                :      -1.354815 Un{9reX5  
          8     0.48754161    -0.05649072 {{Z3M>Q  
    Change in Focus                :       0.215922 btv.M  
          9     0.40357468    -0.14045766 ]B9Ut&mF;  
    Change in Focus                :       0.281783 V.~C.x  
         10     0.26315315    -0.28087919 :DR}lOi`  
    Change in Focus                :      -1.048393 Oo8"s+G  
         11     0.26120585    -0.28282649 #~:@H&f790  
    Change in Focus                :       1.017611 .eG_>2'1  
         12     0.24033815    -0.30369419 R^tDL  
    Change in Focus                :      -0.109292 ~"i4"Op&  
         13     0.37164046    -0.17239188 ^y3snuLtE  
    Change in Focus                :      -0.692430 /|aD,JVN"  
         14     0.48597489    -0.05805744 AJR`ohh  
    Change in Focus                :      -0.662040 T`SpIdzB.  
         15     0.21462327    -0.32940907 ,|Lf6k  
    Change in Focus                :       1.611296 xGo,x+U*  
         16     0.43378226    -0.11025008 gukKa  
    Change in Focus                :      -0.640081 ,-_\Y hY>  
         17     0.39321881    -0.15081353 Nt P=m @  
    Change in Focus                :       0.914906 Nm,9xq  
         18     0.20692530    -0.33710703 [5$Y>Tr!  
    Change in Focus                :       0.801607 aW7)}"j4  
         19     0.51374068    -0.03029165 a^.5cJ$]  
    Change in Focus                :       0.947293 SKrkB~%z  
         20     0.38013374    -0.16389860 sboX<  
    Change in Focus                :       0.667010 7&{[Y^R]"  
    j;_ >,\  
    Number of traceable Monte Carlo files generated: 20 ^{w]r5d  
    I+_u?R)$  
    Nominal     0.54403234 B3-;]6  
    Best        0.54384387    Trial     2 +6+!M_0wA  
    Worst       0.18154684    Trial     4 qo62!q  
    Mean        0.35770970 <R @w0b>  
    Std Dev     0.11156454 tP]-u3  
    Pq)C(Z  
    9 M!J7 W  
    Compensator Statistics: ;PF!=8dW  
    Change in back focus: ds D!)$  
    Minimum            :        -1.354815 pv){R;f  
    Maximum            :         1.611296 C J#1j>  
    Mean               :         0.161872 *:hHlH* t1  
    Standard Deviation :         0.869664 p:CpY'KV_  
    cuW&X9\m,  
    90% >       0.20977951               sQ>L3F;A`  
    80% >       0.22748071               NY9\a[[^[8  
    50% >       0.38667627               kqyPb$Wy  
    20% >       0.46553746               wSd o 7Lb  
    10% >       0.50064115                QeZK&^W  
    "0#d F:qt  
    End of Run. 0N(o)WRv  
    pv9Z-WCix$  
    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 N)N\iad^  
    (!^; ar^  
    yJG M"$  
    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  (zL(  
    ^E349c-|  
    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                 u~y0H  
    80% >       0.22748071                 E|K~WO]>o  
    50% >       0.38667627                 O ELh6R  
    20% >       0.46553746                 vv% o+r-t  
    10% >       0.50064115 qe{:9  
    1P[[PvkD6  
    最后这个数值是MTF值呢，还是MTF的公差？ G&2`c\u{  
    ,q|;`?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？？？   g=5vnY  
    :497]c3#5C  
    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  : u P&<  
    90% >       0.20977951                 D%%@+3a  
    80% >       0.22748071                 kx.8VUoM V  
    50% >       0.38667627                 NB=!1;^J  
    20% >       0.46553746                 !bGMVw6_  
    10% >       0.50064115 La 9:qpj  
    ....... H b}(.`  
    'U/X<LCl  
    ["7]EW\!:  
    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   I\WBPI  
    Mode                : Sensitivities l`(pV ;{W  
    Sampling            : 2 >uy(N  
    Nominal Criterion   : 0.54403234 >'g>CD!  
    Test Wavelength     : 0.6328 R^+,D  
    5q95.rw  
    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？ /P koqA,  
    Kk|4  
    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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