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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 Kq&qE>Ju  
    g:_hj_1Y M  
    D+sQPymI  
    HY;9?KJ'  
    然后添加了默认公差分析,基本没变 llq*T"7  
    1a$IrQE  
    CvK3H\.&;k  
    ]tB@kBi "  
    然后运行分析的结果如下: dv~pddOs  
    E ] B7  
    Analysis of Tolerances fW(/Loh  
    iA'As%S1  
    File : E:\光学设计资料\zemax练习\f500.ZMX M-J<n>hl  
    Title: 7+nm31,<O  
    Date : TUE JUN 21 2011 u7s"0f`  
    Zw{MgoJ0Z  
    Units are Millimeters. @g-G =Ba  
    All changes are computed using linear differences. 3K>gz:dt  
    6e&$l-  
    Paraxial Focus compensation only. V.6)0fKZW  
    E{y1S\7K  
    WARNING: Solves should be removed prior to tolerancing. *k [J6  
    W .I\J<=V  
    Mnemonics: Kqg!,Sn|  
    TFRN: Tolerance on curvature in fringes. ]$A(9Pn"  
    TTHI: Tolerance on thickness. h Dk)Qg  
    TSDX: Tolerance on surface decentering in x. SeEw.;Xw  
    TSDY: Tolerance on surface decentering in y. Xg7|JS!  
    TSTX: Tolerance on surface tilt in x (degrees). sOBu7!G%  
    TSTY: Tolerance on surface tilt in y (degrees). 5Bjgr  
    TIRR: Tolerance on irregularity (fringes). ,.tfWN%t\  
    TIND: Tolerance on Nd index of refraction. CnISe^h  
    TEDX: Tolerance on element decentering in x. i47j lyH  
    TEDY: Tolerance on element decentering in y. e6E?t[hEeS  
    TETX: Tolerance on element tilt in x (degrees). ;_O)p,p  
    TETY: Tolerance on element tilt in y (degrees). vLT0ETHg6  
    upy\gkpnGO  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 2;2}wM[  
    Kibr ]w  
    WARNING: Boundary constraints on compensators will be ignored. d0'HDVd  
    #_i`#d)  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm !do?~$Og  
    Mode                : Sensitivities 9'[ N1Un.=  
    Sampling            : 2 x,n,Qlb  
    Nominal Criterion   : 0.54403234 o0bM=njok  
    Test Wavelength     : 0.6328 U{@5*4  
    T-_"|-k}P%  
    c>:R3^\lwx  
    Fields: XY Symmetric Angle in degrees Cbm\h/PXl  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY NZ0O,} m  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 qS| \JG  
    ntVS:F  
    Sensitivity Analysis: -7 U| a/  
    PcT?<HU  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 9(4&KZpK  
    Type                      Value      Criterion        Change          Value      Criterion        Change $za8"T*I  
    Fringe tolerance on surface 1 5=|hC3h  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 *{ {b~$  
    Change in Focus                :      -0.000000                            0.000000 ^T::-pN*  
    Fringe tolerance on surface 2 <h-vjz  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 sEJC-$   
    Change in Focus                :       0.000000                            0.000000 #S]ER907  
    Fringe tolerance on surface 3 Om;&_!i  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 7*5Z  
    Change in Focus                :      -0.000000                            0.000000 %D g0fL  
    Thickness tolerance on surface 1 RTh`ENCKR  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 &-d&t` `  
    Change in Focus                :       0.000000                            0.000000 4)|8Eu[p7  
    Thickness tolerance on surface 2 E_e6^Sk5B(  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 6 5N~0t  
    Change in Focus                :       0.000000                           -0.000000 Gs+3e8  
    Decenter X tolerance on surfaces 1 through 3 Zwz&rIQpT  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ,EGQ@:3/  
    Change in Focus                :       0.000000                            0.000000 d?`ny#,GB  
    Decenter Y tolerance on surfaces 1 through 3 !$-\;<bZw  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 i0$Bx>  
    Change in Focus                :       0.000000                            0.000000 }X*Riu7gk  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 0Z[oKXm1p  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 FKNMtp[`  
    Change in Focus                :       0.000000                            0.000000 8_<4-<}P:  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) .qMOGbd?  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 |KSy`lY-j>  
    Change in Focus                :       0.000000                            0.000000 ~T&<CTh  
    Decenter X tolerance on surface 1 VCXJwVb  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 7(5xL T$  
    Change in Focus                :       0.000000                            0.000000 6KpHnSW  
    Decenter Y tolerance on surface 1 MjlP+; !  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 <:SZAAoIV  
    Change in Focus                :       0.000000                            0.000000 1N7Kv4,  
    Tilt X tolerance on surface (degrees) 1 wr[,  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 R" ;x vo*  
    Change in Focus                :       0.000000                            0.000000 P"B0_EuR<T  
    Tilt Y tolerance on surface (degrees) 1 Ag{iq(X  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 3|.um_  
    Change in Focus                :       0.000000                            0.000000 B2-V@06  
    Decenter X tolerance on surface 2 yKYTi3_(  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 /"eey(X  
    Change in Focus                :       0.000000                            0.000000 JSW^dw&  
    Decenter Y tolerance on surface 2 ]]Cb$$Td  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 At-U2a#J{  
    Change in Focus                :       0.000000                            0.000000 !O`(JSoG  
    Tilt X tolerance on surface (degrees) 2 #Q2Y&2`yGT  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 T:5fc2Ngv  
    Change in Focus                :       0.000000                            0.000000 1P~X8=9h  
    Tilt Y tolerance on surface (degrees) 2 su*'d:L  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 MyT q  
    Change in Focus                :       0.000000                            0.000000 /YZr~|65  
    Decenter X tolerance on surface 3 x>Zn?YR,"  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195  o4|M0  
    Change in Focus                :       0.000000                            0.000000 SQX:7YF~  
    Decenter Y tolerance on surface 3 rg^'S1x|  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 "rx-_uK*  
    Change in Focus                :       0.000000                            0.000000 _lamn }(x0  
    Tilt X tolerance on surface (degrees) 3 ["h5!vj  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 nih0t^m'  
    Change in Focus                :       0.000000                            0.000000 rJGf .qJJ  
    Tilt Y tolerance on surface (degrees) 3 Tj:B!>>  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 -[cTx[Z,  
    Change in Focus                :       0.000000                            0.000000 Qk:Y2mL  
    Irregularity of surface 1 in fringes wne,e's}   
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Xu%'Z".>:  
    Change in Focus                :       0.000000                            0.000000 Tf'hc]`vS  
    Irregularity of surface 2 in fringes %J+E/  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 E=nIRG|g  
    Change in Focus                :       0.000000                            0.000000 jYk&/@`Ly  
    Irregularity of surface 3 in fringes 8X[:j&@  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 k$blEa4  
    Change in Focus                :       0.000000                            0.000000 [ CQ+p!QZ  
    Index tolerance on surface 1 9Z4nAc  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ]s<[D$ <,  
    Change in Focus                :       0.000000                            0.000000 nLXlU*ES  
    Index tolerance on surface 2 VK m&iidU  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 V<GHpFi0  
    Change in Focus                :       0.000000                           -0.000000 *\ R ]NV  
    IG2r#N|C#  
    Worst offenders: u_oaebOrpP  
    Type                      Value      Criterion        Change ! >FYK}c7  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 m| n  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ~vm%6CABM  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 >g1~CEMN#  
    TSTX   2             0.20000000     0.35349910    -0.19053324 d,k!qjf=r  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 oB(?_No7  
    TSTY   1             0.20000000     0.42678383    -0.11724851 5_GYrR2  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 3l rT3a3vV  
    TSTX   1             0.20000000     0.42678383    -0.11724851 SW@$ci  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 we;-~A5J  
    TSTY   3             0.20000000     0.42861670    -0.11541563 <? q?Mn  
    Cio 1E-4  
    Estimated Performance Changes based upon Root-Sum-Square method: IaSR;/  
    Nominal MTF                 :     0.54403234 ,LHn90S  
    Estimated change            :    -0.36299231 ;17E(tl  
    Estimated MTF               :     0.18104003 8W*%aOi5+  
    {'7B6  
    Compensator Statistics: X _q\Sg  
    Change in back focus: ,0 M_ Bk"  
    Minimum            :        -0.000000 6AAz  
    Maximum            :         0.000000 |3(' N#|  
    Mean               :        -0.000000 Ua:}Vn&!  
    Standard Deviation :         0.000000 &GpRI(OB/+  
    rD*jp6Cl  
    Monte Carlo Analysis: Ytn9B}%o  
    Number of trials: 20 >^u2cAi3[  
    `KZm0d{H  
    Initial Statistics: Normal Distribution d[iQ` YW5  
    b6,iZ+]  
      Trial       Criterion        Change Ouk ^O}W6  
          1     0.42804416    -0.11598818 uy>q7C  
    Change in Focus                :      -0.400171 `+]Qz =}  
          2     0.54384387    -0.00018847 ?>7[7(|  
    Change in Focus                :       1.018470 W: z6Koc0  
          3     0.44510003    -0.09893230 Ogqj?]2QC  
    Change in Focus                :      -0.601922 \1k79c  
          4     0.18154684    -0.36248550 C7]f*TSC4  
    Change in Focus                :       0.920681 <$D`Z-6  
          5     0.28665820    -0.25737414 8?xE6  
    Change in Focus                :       1.253875 R)c?`:iUB  
          6     0.21263372    -0.33139862 OAgniLv  
    Change in Focus                :      -0.903878 M H|Og84  
          7     0.40051424    -0.14351809 0_jf/an,%  
    Change in Focus                :      -1.354815 1I%w?^sm_  
          8     0.48754161    -0.05649072 #]\Uk,mhZB  
    Change in Focus                :       0.215922 /J]5H  
          9     0.40357468    -0.14045766 /!0={G  
    Change in Focus                :       0.281783 &h}#HS>l  
         10     0.26315315    -0.28087919 |Tv#4st  
    Change in Focus                :      -1.048393 z<MsKD0Q  
         11     0.26120585    -0.28282649 p?02C# p  
    Change in Focus                :       1.017611 &T#;-`'  
         12     0.24033815    -0.30369419  eb ?x9h  
    Change in Focus                :      -0.109292 D, k6$`  
         13     0.37164046    -0.17239188 J"0`%'*/  
    Change in Focus                :      -0.692430 ?e%ZOI  
         14     0.48597489    -0.05805744 dn& s*  
    Change in Focus                :      -0.662040 8'[~2/  
         15     0.21462327    -0.32940907 ]}V<*f  
    Change in Focus                :       1.611296 M`0V~P`^  
         16     0.43378226    -0.11025008 4j-Xi  
    Change in Focus                :      -0.640081 4VHn  \  
         17     0.39321881    -0.15081353 :a!^   
    Change in Focus                :       0.914906 irZ])a  
         18     0.20692530    -0.33710703 +5)nk}  
    Change in Focus                :       0.801607  \__i  
         19     0.51374068    -0.03029165 {4l8}w  
    Change in Focus                :       0.947293 +V2F#fI/  
         20     0.38013374    -0.16389860 A@`}c,G  
    Change in Focus                :       0.667010 kBS9tKBWg  
    n3WlZ!$  
    Number of traceable Monte Carlo files generated: 20 ::`HQ@^  
    9p]QM)M  
    Nominal     0.54403234 !M(xG%M-V  
    Best        0.54384387    Trial     2 &s(^@OayE  
    Worst       0.18154684    Trial     4 jV i) Efy  
    Mean        0.35770970 TP*hd  
    Std Dev     0.11156454 x5pdS:  
    #`^}PuQ  
    a,,exi  
    Compensator Statistics: j;zM{qu_  
    Change in back focus: GC-5X`Sq  
    Minimum            :        -1.354815 ,CJWO bn3  
    Maximum            :         1.611296 ,KH#NY]  
    Mean               :         0.161872 [+Iz@0q  
    Standard Deviation :         0.869664 Q3'llOx  
    @NR>{Eg  
    90% >       0.20977951               y RqL9t  
    80% >       0.22748071               #<fRE"v:Q  
    50% >       0.38667627               i$Ul(?  
    20% >       0.46553746               ,~U>'&M;  
    10% >       0.50064115                ./Xz}<($8  
    yxPazz  
    End of Run. KYm0@O>;  
    iqsCB%;5  
    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 RH W]Z Pr<  
    U gat1Pz  
    \  #F  
    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 HZE#Ab*L  
    ic:zsuEm  
    不吝赐教
     
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    离线sansummer
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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?
    离线sansummer
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 H7Rx>h_  
    80% >       0.22748071                 "S]0  
    50% >       0.38667627                 Dj?> <@  
    20% >       0.46553746                 F{e@W([  
    10% >       0.50064115 3*XNV  
    D/gw .XYL  
    最后这个数值是MTF值呢,还是MTF的公差? m])y.T  
    net@j#}j-  
    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???   xIW3={b3  
    G_8RK,H.  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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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  : BLdvyVFx  
    90% >       0.20977951                 }O5i/#.lR  
    80% >       0.22748071                 L(<*)No  
    50% >       0.38667627                 'Cfl*iNb  
    20% >       0.46553746                 P>C~ i:4n  
    10% >       0.50064115 zpZm&WC  
    ....... WIT>!|w_  
    ~9]hV7y5C  
     .Wj;%|  
    这些数值都是MTF值
    离线天地大同
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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   R6.hA_ih  
    Mode                : Sensitivities HGs $*  
    Sampling            : 2 T{.pM4Hd  
    Nominal Criterion   : 0.54403234 DDP/DD;n}r  
    Test Wavelength     : 0.6328 TH&U j1  
    n u[ML  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
    离线sansummer
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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? FEz-+X<q2  
    ZF9z~9  
    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?
    离线天地大同
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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
    离线sansummer
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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?
    离线天地大同
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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