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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 O;f^' N  
    gB&]kHLO  
    M ! gX4  
     ?1r@r  
    然后添加了默认公差分析，基本没变 \^;Gv%E  
    B P"PUl:  
    p*!@z|F>U  
    mLk@&WxG  
    然后运行分析的结果如下： m0]LY-t  
    n)} J<  
    Analysis of Tolerances x `PIJE  
    dJ?VN!B0  
    File : E:\光学设计资料\zemax练习\f500.ZMX _@;2h`q ?  
    Title: +^gh3Y  
    Date : TUE JUN 21 2011 52m^jT Sx  
    r4JXbh6Tt  
    Units are Millimeters. 3{Ze>yFE  
    All changes are computed using linear differences. jp8=>mk  
    vPmP<c)cb  
    Paraxial Focus compensation only. \q Q5x  
    2F!K }aw  
    WARNING: Solves should be removed prior to tolerancing. 7;;W{W%  
    k(=\& T  
    Mnemonics: jCW>=1:JGY  
    TFRN: Tolerance on curvature in fringes. fj0+a0h  
    TTHI: Tolerance on thickness. qt/syF&s  
    TSDX: Tolerance on surface decentering in x. =/6.4;8  
    TSDY: Tolerance on surface decentering in y. Z/q%%(fh 0  
    TSTX: Tolerance on surface tilt in x (degrees). `m3@mJ!>\  
    TSTY: Tolerance on surface tilt in y (degrees). z:u`W#Rf  
    TIRR: Tolerance on irregularity (fringes). 1?(BWX)7  
    TIND: Tolerance on Nd index of refraction. ifTVTd7O  
    TEDX: Tolerance on element decentering in x. Rt7}e09HV  
    TEDY: Tolerance on element decentering in y. ;DC0LJ  
    TETX: Tolerance on element tilt in x (degrees). ?MKf=! w  
    TETY: Tolerance on element tilt in y (degrees). KblOP{I  
    -/x +M-X#  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. m8 0+b8b  
    "1%<IqpU+  
    WARNING: Boundary constraints on compensators will be ignored. :1_hQeq  
    :FG}k Y  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm g ywI@QD%#  
    Mode                : Sensitivities `Kym{og  
    Sampling            : 2 :N8D1e-a  
    Nominal Criterion   : 0.54403234 kjNA~{  
    Test Wavelength     : 0.6328 :m#vvH  
    `6~*kCj5  
    m6 hA,li  
    Fields: XY Symmetric Angle in degrees enG6T  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Lom%eoH)  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 FVY,CeA.  
    1Dt"Rcn"4  
    Sensitivity Analysis: {6 #3`  
    4c2P%X( C  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| &=HM}h  
    Type                      Value      Criterion        Change          Value      Criterion        Change L%B+V;<h3  
    Fringe tolerance on surface 1 iM8hGQ`  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 )[p8  
    Change in Focus                :      -0.000000                            0.000000 X'k w5P!sq  
    Fringe tolerance on surface 2 =7e8N&-nv  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ]XPGlM  
    Change in Focus                :       0.000000                            0.000000 #H!~:Xu   
    Fringe tolerance on surface 3 /2FX"I[0V%  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ykM#EyN  
    Change in Focus                :      -0.000000                            0.000000 K"}Dbr  
    Thickness tolerance on surface 1 Q~xR'G[N  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 M<ad>M  
    Change in Focus                :       0.000000                            0.000000 I]k'0LG*^  
    Thickness tolerance on surface 2 gKYn*  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 o8s&n3mY}y  
    Change in Focus                :       0.000000                           -0.000000 ~B=\![  
    Decenter X tolerance on surfaces 1 through 3 2$\f !6p  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 xje{ kx#  
    Change in Focus                :       0.000000                            0.000000 aNq Vs|H  
    Decenter Y tolerance on surfaces 1 through 3 >,] #~d  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 a@8knJ|  
    Change in Focus                :       0.000000                            0.000000 1Rczf(,aT  
    Tilt X tolerance on surfaces 1 through 3 (degrees) @W. `'b-  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 *kKGsy  
    Change in Focus                :       0.000000                            0.000000 M2s   
    Tilt Y tolerance on surfaces 1 through 3 (degrees)  vo::y"  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 qL'3MY.!  
    Change in Focus                :       0.000000                            0.000000 0I#<-9&d-  
    Decenter X tolerance on surface 1 _Jp_TvP>  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 jV<LmVcZY  
    Change in Focus                :       0.000000                            0.000000 61mQJHl.  
    Decenter Y tolerance on surface 1 w}YHCh  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 x _2]G'  
    Change in Focus                :       0.000000                            0.000000 M}nalr+#  
    Tilt X tolerance on surface (degrees) 1 s]I],>}RU  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 PN'8"8`{  
    Change in Focus                :       0.000000                            0.000000 &a|oJ'clz  
    Tilt Y tolerance on surface (degrees) 1 <5X@r#Lz  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 -"cN9RF  
    Change in Focus                :       0.000000                            0.000000 [ =9R5.)c  
    Decenter X tolerance on surface 2 $< aBawLZO  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 CD[7h  
    Change in Focus                :       0.000000                            0.000000 ^#=L?e  
    Decenter Y tolerance on surface 2 7q\c\qL  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 p0tv@8C>  
    Change in Focus                :       0.000000                            0.000000 .H>Rqikj  
    Tilt X tolerance on surface (degrees) 2 K&X'^|en  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 I}q-J~s  
    Change in Focus                :       0.000000                            0.000000 Gt1Up~\s  
    Tilt Y tolerance on surface (degrees) 2 AH7k|6ku<*  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 )a}5\V  
    Change in Focus                :       0.000000                            0.000000 .U1dcL6  
    Decenter X tolerance on surface 3 3jI.!xD`  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 g@U#Y#b@"  
    Change in Focus                :       0.000000                            0.000000 D3K`b4YV  
    Decenter Y tolerance on surface 3 =CVw0'yZ  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 asF- mf;D  
    Change in Focus                :       0.000000                            0.000000 [qXpi'q[  
    Tilt X tolerance on surface (degrees) 3 Q0--.Q=:Y  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 x:bYd\ EJ[  
    Change in Focus                :       0.000000                            0.000000 C{ti>'"V  
    Tilt Y tolerance on surface (degrees) 3 oby*.61?5l  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ]SPB c  
    Change in Focus                :       0.000000                            0.000000 Wp]EaYt2D  
    Irregularity of surface 1 in fringes C=]3NB>Jc  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 e56#Qb@$\  
    Change in Focus                :       0.000000                            0.000000 j~{2fd<>  
    Irregularity of surface 2 in fringes Ya_6Zd4O  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ]lo1Kw  
    Change in Focus                :       0.000000                            0.000000 4w?7AI]Ej  
    Irregularity of surface 3 in fringes w\mF2h  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ~3%3{a a  
    Change in Focus                :       0.000000                            0.000000 3(&.[o Z  
    Index tolerance on surface 1 4sAshrUf  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 "5YdmBy  
    Change in Focus                :       0.000000                            0.000000 }ot _k-  
    Index tolerance on surface 2 $W?XxgkB?  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 |. 6@-h~8  
    Change in Focus                :       0.000000                           -0.000000 BNy"YK$  
    ,YY#ed&l  
    Worst offenders: H94.E|Q\+  
    Type                      Value      Criterion        Change HDEG/k/~m  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 9,W-KM  
    TSTY   2             0.20000000     0.35349910    -0.19053324 K$.zO4  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 md`ToU  
    TSTX   2             0.20000000     0.35349910    -0.19053324 /OP*ARoC21  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 e ?YbG.(E9  
    TSTY   1             0.20000000     0.42678383    -0.11724851 !BX62j\?  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 LnDj   
    TSTX   1             0.20000000     0.42678383    -0.11724851 ]Rye AJ3  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ^55?VQB  
    TSTY   3             0.20000000     0.42861670    -0.11541563 /kz&9FM  
    m\f_u*  
    Estimated Performance Changes based upon Root-Sum-Square method: eTc`FXw`  
    Nominal MTF                 :     0.54403234 E8i:ER $$7  
    Estimated change            :    -0.36299231 Wa(S20y F  
    Estimated MTF               :     0.18104003 CwvNxH#LVu  
    Fjzk;o  
    Compensator Statistics: @r?`:&m0  
    Change in back focus: /)1-^ju  
    Minimum            :        -0.000000 5avO48;Vc  
    Maximum            :         0.000000 bw\=F_>L  
    Mean               :        -0.000000 ;N\?]{ L  
    Standard Deviation :         0.000000 PR?clg=z  
    ='0!B]<G  
    Monte Carlo Analysis: /6zpVkV  
    Number of trials: 20 }/spo3,6  
    +][P*/Ek  
    Initial Statistics: Normal Distribution {9".o,  
    ra>`J_  
      Trial       Criterion        Change ,7P^]V1  
          1     0.42804416    -0.11598818 ~-`02  
    Change in Focus                :      -0.400171 d*$<%J  
          2     0.54384387    -0.00018847 %B*dj9n^q  
    Change in Focus                :       1.018470 =LxmzQO#  
          3     0.44510003    -0.09893230 uw=Ube(  
    Change in Focus                :      -0.601922 <gLtX[v!CL  
          4     0.18154684    -0.36248550 $0}bi:7  
    Change in Focus                :       0.920681 r6JkoP Mh  
          5     0.28665820    -0.25737414 ts<dUO  
    Change in Focus                :       1.253875 YSo7~^1W"  
          6     0.21263372    -0.33139862 fZ}Y(TG/  
    Change in Focus                :      -0.903878 5V~p@vCx  
          7     0.40051424    -0.14351809 Zk UuniO  
    Change in Focus                :      -1.354815 ok[=1gA#h  
          8     0.48754161    -0.05649072 9M]"%E!s  
    Change in Focus                :       0.215922 suFOc  
          9     0.40357468    -0.14045766 io7U[#  
    Change in Focus                :       0.281783 `uVW<z{ l  
         10     0.26315315    -0.28087919 Xp6*Y1Y  
    Change in Focus                :      -1.048393 5iddB $  
         11     0.26120585    -0.28282649 -5 /v`  
    Change in Focus                :       1.017611 ACO4u<M)  
         12     0.24033815    -0.30369419 2j7d$y*'  
    Change in Focus                :      -0.109292 b',bi.FH  
         13     0.37164046    -0.17239188 vQ mackY  
    Change in Focus                :      -0.692430 @z)tC@  
         14     0.48597489    -0.05805744 Tki/ d\!+  
    Change in Focus                :      -0.662040 wp.e3l  
         15     0.21462327    -0.32940907 5jV97x)BGx  
    Change in Focus                :       1.611296 >JPJ%~y  
         16     0.43378226    -0.11025008 5w)^~#  '  
    Change in Focus                :      -0.640081 ~e77w\Q0  
         17     0.39321881    -0.15081353 Nu/Qa:H_{  
    Change in Focus                :       0.914906 BddECY,z  
         18     0.20692530    -0.33710703 _SC  
    Change in Focus                :       0.801607 NK9WrUj)  
         19     0.51374068    -0.03029165 mqk(UOK`  
    Change in Focus                :       0.947293 Q\#{2!I  
         20     0.38013374    -0.16389860 #A9_A%_.h  
    Change in Focus                :       0.667010 iWM7, =1+  
    .xkV#ol  
    Number of traceable Monte Carlo files generated: 20 l$VxE'&LQ  
    CKt|c!3 7  
    Nominal     0.54403234 ht3T{4qCS  
    Best        0.54384387    Trial     2 P^3m:bE]  
    Worst       0.18154684    Trial     4 ]Wd`GI  
    Mean        0.35770970 &U$8zn~[k  
    Std Dev     0.11156454 9id~NNr7  
    j22#Bw  
    _Sgk^i3v  
    Compensator Statistics: zLw h6^?Y  
    Change in back focus: ;q,)NAr&  
    Minimum            :        -1.354815 Kwl qi]~  
    Maximum            :         1.611296 R #3Q$   
    Mean               :         0.161872 +yb$[E*  
    Standard Deviation :         0.869664 w}W@M,.^  
    $wYuH9(  
    90% >       0.20977951               9MB\z"b?A  
    80% >       0.22748071               ~26s7S}  
    50% >       0.38667627               c > mu)('U  
    20% >       0.46553746               OKZam ik~  
    10% >       0.50064115                lii ]4k+z  
    Stw+Dm\!  
    End of Run. R8[i XXjku  
    o%+A<Ri  
    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 kyxSIQ^  
    $}^\=p}X  
    AZy~Q9Kc  
    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 c7g.|R  
    Ukx/jNyYv  
    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                 'YZI>V*  
    80% >       0.22748071                 "[Qb'9/Jc  
    50% >       0.38667627                 vbRrk($`  
    20% >       0.46553746                 Sv~YFS :oy  
    10% >       0.50064115 (o x4K{  
    BrNG%%n  
    最后这个数值是MTF值呢，还是MTF的公差？ IqhICC1V-  
    'R4>CZ%jV  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   <\1}@?NGC  
    QJM-`(  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : fph-v-cl  
    90% >       0.20977951                 T1l&B  
    80% >       0.22748071                 8ou e-:/a  
    50% >       0.38667627                 HDyQzCG,  
    20% >       0.46553746                 g93I+  
    10% >       0.50064115 N g58/}zO  
    ....... Kn']n91m  
    <e'P%tG'  
    2*+ 3Rr J  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   (/'h4KS@  
    Mode                : Sensitivities USprsaj  
    Sampling            : 2 4&|C}  
    Nominal Criterion   : 0.54403234 5Yl6?  
    Test Wavelength     : 0.6328 +i+tp8T+7  
    PCtkjd  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
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    只看该作者 6楼 发表于: 2011-06-24
    回 5楼(天地大同) 的帖子
    谢谢。您说的“波长632.8nm 时 mtf 是 0.54403234  没达到0.6”这是一个评价标准吧？ 3x![ 8 x  
    H"O$&  
    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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