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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 !sm/BsmL7T  
    HN{c)DIm]  
    )P:^A9&_n=  
    UDg' s  
    然后添加了默认公差分析,基本没变 !EB<N<P"t  
    Kg$RT?q-C6  
    k*hl"oL"X  
    #lP8/-s^  
    然后运行分析的结果如下: LJ(WU)CPc  
    Z,38eQpM  
    Analysis of Tolerances U@mznf* J  
    x 6`!  
    File : E:\光学设计资料\zemax练习\f500.ZMX 2L^)k?9>g+  
    Title: yS\&2"o  
    Date : TUE JUN 21 2011 XZM3zlg*  
    YzI;)  
    Units are Millimeters. `R[ZY!=+  
    All changes are computed using linear differences. U4pIRa)S  
    .z`70ot?  
    Paraxial Focus compensation only. @%R<3!3v  
    A]/o-S_  
    WARNING: Solves should be removed prior to tolerancing. -[V-f> :  
    ump~)?_B  
    Mnemonics: lrT2*$ w3  
    TFRN: Tolerance on curvature in fringes. Nujnm$!,Q  
    TTHI: Tolerance on thickness. 3`HK^((o  
    TSDX: Tolerance on surface decentering in x. yJm"vN  
    TSDY: Tolerance on surface decentering in y. \beO5]KS<  
    TSTX: Tolerance on surface tilt in x (degrees). \WCQ>c?~  
    TSTY: Tolerance on surface tilt in y (degrees). 0Z9DewwP  
    TIRR: Tolerance on irregularity (fringes). RwWg:4   
    TIND: Tolerance on Nd index of refraction. 8-#%l~dr  
    TEDX: Tolerance on element decentering in x. d,"LZ>hNY*  
    TEDY: Tolerance on element decentering in y. Q6@<7E]y  
    TETX: Tolerance on element tilt in x (degrees). (CmK> "C+  
    TETY: Tolerance on element tilt in y (degrees). ATNOb  
    /fr>Fd  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. i<m(neX[H  
    k&]nF,f  
    WARNING: Boundary constraints on compensators will be ignored. jhNFaBrS  
    >1~ /:DJ  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm fGo4&( U  
    Mode                : Sensitivities ~?Q sr  
    Sampling            : 2 0M_oFx  
    Nominal Criterion   : 0.54403234 &v{Ehkr*  
    Test Wavelength     : 0.6328 t;&XIG~  
    SiratkP9n7  
    yw3"jdcl  
    Fields: XY Symmetric Angle in degrees y/lF1{}5  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY j9+$hu#a  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 G'ykcB._  
    S\ k<  
    Sensitivity Analysis: e#(Ck{e  
    >Jz9wo`  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 'ZfgCu)St  
    Type                      Value      Criterion        Change          Value      Criterion        Change Bh>L"'.2  
    Fringe tolerance on surface 1 n +~Dc[  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 g`7XE  
    Change in Focus                :      -0.000000                            0.000000 f!Q\M1t)  
    Fringe tolerance on surface 2 n|SV)92o1  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 #%0V`BS7n  
    Change in Focus                :       0.000000                            0.000000 )O]T}eI  
    Fringe tolerance on surface 3 1uw#;3<L  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 kN1MPd4Yh  
    Change in Focus                :      -0.000000                            0.000000 $B+| &]a  
    Thickness tolerance on surface 1 _'u]{X\k{J  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 >:;dNVz  
    Change in Focus                :       0.000000                            0.000000 <j'V}|3  
    Thickness tolerance on surface 2 l>?c AB[  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 |?`5~f  
    Change in Focus                :       0.000000                           -0.000000 [4Z 31v>  
    Decenter X tolerance on surfaces 1 through 3 "/#JC} ]  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 H"C'<(4*\  
    Change in Focus                :       0.000000                            0.000000 u2V-V#jS  
    Decenter Y tolerance on surfaces 1 through 3 mP(3[a_Q  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 w2 )Ro:G  
    Change in Focus                :       0.000000                            0.000000 qS!r<'F3dP  
    Tilt X tolerance on surfaces 1 through 3 (degrees) n/H OP  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 5gszAvOO  
    Change in Focus                :       0.000000                            0.000000 3dShznlf_*  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) (L_-!=e  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 NWBYpGZx  
    Change in Focus                :       0.000000                            0.000000 qt GJJ#^,  
    Decenter X tolerance on surface 1 ;SR ESW  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 y}Ky<%A!P  
    Change in Focus                :       0.000000                            0.000000 <#63tN9  
    Decenter Y tolerance on surface 1 \INH[X#>  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 v\0G`&^1  
    Change in Focus                :       0.000000                            0.000000 QFyL2Xes/  
    Tilt X tolerance on surface (degrees) 1 &K)8  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ::L2zVq5V  
    Change in Focus                :       0.000000                            0.000000 h`fVQN.3  
    Tilt Y tolerance on surface (degrees) 1 ~xH&"1  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 f0Q6sVZHa  
    Change in Focus                :       0.000000                            0.000000 g;IlS*Ld  
    Decenter X tolerance on surface 2 Gn]36~)*H  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 e _vsiT  
    Change in Focus                :       0.000000                            0.000000 0P^h6Vat  
    Decenter Y tolerance on surface 2 WA{igj@\  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 GN.O a$  
    Change in Focus                :       0.000000                            0.000000 A]1Nm3@  
    Tilt X tolerance on surface (degrees) 2 $ |4C]Me (  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 zd?@xno  
    Change in Focus                :       0.000000                            0.000000 ZS Med(//b  
    Tilt Y tolerance on surface (degrees) 2 D)_ C@*q  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 +)Te)^&v%  
    Change in Focus                :       0.000000                            0.000000 ,!ZuH?Z  
    Decenter X tolerance on surface 3 LzygupxY!  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 R{hX--|j  
    Change in Focus                :       0.000000                            0.000000 L\yVE J9x  
    Decenter Y tolerance on surface 3 `S&a.k  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 l/$GF|`U  
    Change in Focus                :       0.000000                            0.000000 UNI< r  
    Tilt X tolerance on surface (degrees) 3 *P()&}JK  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Er~17$b  
    Change in Focus                :       0.000000                            0.000000 XGlt^<`  
    Tilt Y tolerance on surface (degrees) 3 eh# 37*-  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 C3AWXO ^  
    Change in Focus                :       0.000000                            0.000000 l}{{7~C`  
    Irregularity of surface 1 in fringes We+rFk1ddt  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ~iw&^p|=K  
    Change in Focus                :       0.000000                            0.000000 h@)U,&  
    Irregularity of surface 2 in fringes -"(*'hD  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 xQ?>72grP  
    Change in Focus                :       0.000000                            0.000000 [)H 6`w  
    Irregularity of surface 3 in fringes 7AG|'s['=  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ^<]'?4m]  
    Change in Focus                :       0.000000                            0.000000 e r" w{  
    Index tolerance on surface 1 \lL[08G  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 r4.6W[| d  
    Change in Focus                :       0.000000                            0.000000 Nk~}aj  
    Index tolerance on surface 2 V>$( N/1  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 [f6uwp  
    Change in Focus                :       0.000000                           -0.000000 <+8'H:wz  
    ,'NasL8?We  
    Worst offenders: &K[*vyD  
    Type                      Value      Criterion        Change :I"CQ C[Z  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ROO*/OOd  
    TSTY   2             0.20000000     0.35349910    -0.19053324 dQut8>0&  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 *0WVrM06?  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Z:b?^u4.  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 OhF55,[  
    TSTY   1             0.20000000     0.42678383    -0.11724851 :\](m64z;  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 ~%hdy @  
    TSTX   1             0.20000000     0.42678383    -0.11724851 uf(ayDE  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 P \7DA4]  
    TSTY   3             0.20000000     0.42861670    -0.11541563 9O[IR)O~  
    Ht`fC|E  
    Estimated Performance Changes based upon Root-Sum-Square method: o7y<Zd`Bj  
    Nominal MTF                 :     0.54403234 BU nujC  
    Estimated change            :    -0.36299231 >Wg= Tuef  
    Estimated MTF               :     0.18104003 M!mL/*G@YE  
    $+eeE  
    Compensator Statistics: j KU2  
    Change in back focus: `RTxc  
    Minimum            :        -0.000000 !0 7jr%-~  
    Maximum            :         0.000000 $ m`Dyu  
    Mean               :        -0.000000 G,8mFH  
    Standard Deviation :         0.000000 dg D-"-O  
    Sn:>|y~  
    Monte Carlo Analysis: ;W|kc</R*  
    Number of trials: 20 ! FcGa  
    w0QtGQ|  
    Initial Statistics: Normal Distribution xBHf~:!  
    =g% L$b<i  
      Trial       Criterion        Change iUKjCq02  
          1     0.42804416    -0.11598818 OjU{r N*  
    Change in Focus                :      -0.400171 $KcAB0 B8  
          2     0.54384387    -0.00018847 t]c<HDCK  
    Change in Focus                :       1.018470 t@KTiJI ]  
          3     0.44510003    -0.09893230 opX07~1  
    Change in Focus                :      -0.601922 ITPE2x  
          4     0.18154684    -0.36248550 o.s'0xP]  
    Change in Focus                :       0.920681 :J;U~emq  
          5     0.28665820    -0.25737414 Gz`Jzh j  
    Change in Focus                :       1.253875 ;R$G.5h  
          6     0.21263372    -0.33139862 @kXuC<  
    Change in Focus                :      -0.903878 (}#&HE<  
          7     0.40051424    -0.14351809 l;$F[/3a  
    Change in Focus                :      -1.354815 N$=YL @m8  
          8     0.48754161    -0.05649072 =^"Sx??V  
    Change in Focus                :       0.215922 f/\!=sa:  
          9     0.40357468    -0.14045766 8X;?fjl`"  
    Change in Focus                :       0.281783 lM-\:Q!  
         10     0.26315315    -0.28087919 \Y#  
    Change in Focus                :      -1.048393 "|\hTRQ  
         11     0.26120585    -0.28282649 lL}6IZ5sb  
    Change in Focus                :       1.017611 ]4rmQAS7"  
         12     0.24033815    -0.30369419 as07~Xvp-  
    Change in Focus                :      -0.109292 $W._FAAJ#  
         13     0.37164046    -0.17239188 `&;#A*C0  
    Change in Focus                :      -0.692430 q NGR6i  
         14     0.48597489    -0.05805744 kHg|!  
    Change in Focus                :      -0.662040 EeaJUK]z9  
         15     0.21462327    -0.32940907 z$<=8ox8e  
    Change in Focus                :       1.611296 ]36SF5<0r  
         16     0.43378226    -0.11025008 ]t[%.^5#  
    Change in Focus                :      -0.640081 mQj#\<*  
         17     0.39321881    -0.15081353 #v c+;`X  
    Change in Focus                :       0.914906 QW..=}pL  
         18     0.20692530    -0.33710703 j;$f[@0o  
    Change in Focus                :       0.801607 }0 ~$^J  
         19     0.51374068    -0.03029165 (o>N*?, }  
    Change in Focus                :       0.947293 5{H)r   
         20     0.38013374    -0.16389860 V .Kjcy  
    Change in Focus                :       0.667010 'O%*:'5k  
    <XL%*  
    Number of traceable Monte Carlo files generated: 20 osc8;B/  
    I!zoo[/)%  
    Nominal     0.54403234 +;,{`*W+N  
    Best        0.54384387    Trial     2 e.\>GwM  
    Worst       0.18154684    Trial     4 h]zok}$  
    Mean        0.35770970 l6zAMyau5  
    Std Dev     0.11156454 3P_.SF  
    PvKGB01_  
    /OKp(u;)z  
    Compensator Statistics: 4Q+,_iP  
    Change in back focus: eKP >} `  
    Minimum            :        -1.354815 AyJl:aN^  
    Maximum            :         1.611296 \Y,P  
    Mean               :         0.161872 Jq1oQu|rs  
    Standard Deviation :         0.869664 df{?E):  
    IO7z}![V;  
    90% >       0.20977951               e {6wFN  
    80% >       0.22748071               =K@LEZZ'/<  
    50% >       0.38667627               [w](x  
    20% >       0.46553746               *gmc6xY  
    10% >       0.50064115                <v ub Q4  
    $y;w@^  
    End of Run. azZ|T{S  
    _9oKW;7f7  
    这就有了些疑问,为什么我选择的补偿器是近轴焦点,而分析结果近轴焦点都不变化??应该是变得。另外最后的蒙特卡洛分析,只有10%的大于0.5(我用的是MTF作为评价方式),可是我设计的MTF如图 mR.j8pi  
    #h ud_  
    r6j[C"@  
    是大于0.6左右的,难道我按照这个默认的公差来加工的话,只有10%的才可能大于0.5?那太低了啊,请问这该怎么进行进一步处理。或者之前哪有问题 >MJ %6A>  
    =Vh]{ y~$  
    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                 @"cnPLh&  
    80% >       0.22748071                 jHMP"(]  
    50% >       0.38667627                 AU*]D@H  
    20% >       0.46553746                 dyqk[$(  
    10% >       0.50064115 HH*,Oe   
    :wzbD,/M  
    最后这个数值是MTF值呢,还是MTF的公差? YTgT2w  
    =PU@'OG  
    也就是说,这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951???   yyPj!<.MGP  
    <)cmI .J3  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : k.0pPl  
    90% >       0.20977951                 k|^nrjStC  
    80% >       0.22748071                 6~+?DIc  
    50% >       0.38667627                 *!(?=9[  
    20% >       0.46553746                 ;/nR[sibN  
    10% >       0.50064115 \=g%W^i  
    ....... i `8Y/$aT  
    }Sb&ux  
    QeAkuqT'[  
    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   fx4X!(w!B  
    Mode                : Sensitivities .!t' &eV  
    Sampling            : 2 Vi>kK|\b  
    Nominal Criterion   : 0.54403234 7,"1%^tU  
    Test Wavelength     : 0.6328 2\!.w^7'^T  
    /SD2e@x{U  
    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? 3C8'@-U  
    O@_)]z?jUc  
    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