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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 gNGr!3*)w  
    C ;(t/zh  
    "[:iXRu  
    YIR R=qpn  
    然后添加了默认公差分析，基本没变 J~(Wf%jM~  
    @ |'5 n  
    @]bPVG?d  
    67y Tvr@a  
    然后运行分析的结果如下： a6kV!,.U  
    !;_H$r0  
    Analysis of Tolerances cwV]!=RtO  
    BPr ^D0P  
    File : E:\光学设计资料\zemax练习\f500.ZMX kF>o.uSV  
    Title: 3Tq\BZ  
    Date : TUE JUN 21 2011 P9T5L<5  
    S>.F_Jl  
    Units are Millimeters. )#F]G$51r  
    All changes are computed using linear differences. lD{Aa!\  
    >c-fI$]  
    Paraxial Focus compensation only. l]<L [Y,E-  
    i_][P TH  
    WARNING: Solves should be removed prior to tolerancing. {647|j;e  
    }h 3K@R   
    Mnemonics: }K hjlPhx  
    TFRN: Tolerance on curvature in fringes. <W]g2>9o9  
    TTHI: Tolerance on thickness. ~afg)[(  
    TSDX: Tolerance on surface decentering in x. 21RP=0Q:  
    TSDY: Tolerance on surface decentering in y. %& _V0R\k  
    TSTX: Tolerance on surface tilt in x (degrees). T;L>P[hNn  
    TSTY: Tolerance on surface tilt in y (degrees). Vb qto|X@  
    TIRR: Tolerance on irregularity (fringes). hp"L8w  
    TIND: Tolerance on Nd index of refraction. *-s,. F+c  
    TEDX: Tolerance on element decentering in x. Nm):9YQ/  
    TEDY: Tolerance on element decentering in y. fSDi- I  
    TETX: Tolerance on element tilt in x (degrees). 2BCtJ`S`  
    TETY: Tolerance on element tilt in y (degrees). |y20Hi':  
    flgRpXt  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. dz>;<&2Z  
    !.1%}4@Q]  
    WARNING: Boundary constraints on compensators will be ignored. |w}xl'>q  
    (z$r:p  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 6WoAs)ZF  
    Mode                : Sensitivities ny-7P;->8  
    Sampling            : 2 n}xhW'3hU=  
    Nominal Criterion   : 0.54403234 c"!lwm3b  
    Test Wavelength     : 0.6328 t:LcNlN|  
    %r)avI  
    #y|V|nd  
    Fields: XY Symmetric Angle in degrees K\XyZ  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY j]0^y}5f+s  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 '&;yT[  
    Hqh6:RuL  
    Sensitivity Analysis: fri0XxF  
    ^w~23g.  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| vILy>QS)  
    Type                      Value      Criterion        Change          Value      Criterion        Change ,7,g%?_P  
    Fringe tolerance on surface 1 %7`f{|.  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 drwgjLC+  
    Change in Focus                :      -0.000000                            0.000000 ;d$qc<2uA  
    Fringe tolerance on surface 2 :ug4g6;#H0  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 p1c3Q$>i  
    Change in Focus                :       0.000000                            0.000000 1xf=_F0`&  
    Fringe tolerance on surface 3 ENh!N4vbO  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 |_u8mV  
    Change in Focus                :      -0.000000                            0.000000 *]JdHO  
    Thickness tolerance on surface 1 UueD(T;p  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 l!E7A Kk8  
    Change in Focus                :       0.000000                            0.000000 AGA`fRVx  
    Thickness tolerance on surface 2 aj,)P3DJu  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ^BZkHAp  
    Change in Focus                :       0.000000                           -0.000000 S'~o,`xy  
    Decenter X tolerance on surfaces 1 through 3 ')S;[=v  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ZWV|# c<G  
    Change in Focus                :       0.000000                            0.000000 T2 ?HRx  
    Decenter Y tolerance on surfaces 1 through 3 t)oapIeIe  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 UkCnqNvx  
    Change in Focus                :       0.000000                            0.000000 EPW7+Ve  
    Tilt X tolerance on surfaces 1 through 3 (degrees) S~$'WA  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 t<:D@J]a  
    Change in Focus                :       0.000000                            0.000000 J` { 6l  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) nRhrWS  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 +kdySWF  
    Change in Focus                :       0.000000                            0.000000 wxLXh6|6%_  
    Decenter X tolerance on surface 1 +)nT|w45  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Q4s&E\}  
    Change in Focus                :       0.000000                            0.000000 (UNtRz'=;  
    Decenter Y tolerance on surface 1 >95TvJ  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 2}}?'PwwT  
    Change in Focus                :       0.000000                            0.000000 vAP{;Q0 i  
    Tilt X tolerance on surface (degrees) 1 XC15K@K  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 O\;=V`z-  
    Change in Focus                :       0.000000                            0.000000 5=?i;P  
    Tilt Y tolerance on surface (degrees) 1 .V6-(d  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ]Pn !nSg  
    Change in Focus                :       0.000000                            0.000000 cd;NpN  
    Decenter X tolerance on surface 2 o7&4G$FX~  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 LE?u`i,e=+  
    Change in Focus                :       0.000000                            0.000000 0BkV/v1Uc  
    Decenter Y tolerance on surface 2 47 u@4"M  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 c(- Mc6  
    Change in Focus                :       0.000000                            0.000000 dTEJ=d40  
    Tilt X tolerance on surface (degrees) 2 fm1X1T.  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 SP 2 8  
    Change in Focus                :       0.000000                            0.000000 e{G_GycH  
    Tilt Y tolerance on surface (degrees) 2 KiLvI,9y  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ST1Ts5I  
    Change in Focus                :       0.000000                            0.000000 gvli%9n  
    Decenter X tolerance on surface 3 c-XLI  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 }\v^+scD  
    Change in Focus                :       0.000000                            0.000000 }wt%1v-10U  
    Decenter Y tolerance on surface 3 ^>~dlS  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 `!\ivIi^  
    Change in Focus                :       0.000000                            0.000000 d+z[\i  
    Tilt X tolerance on surface (degrees) 3 ^[h2%c$  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 h\ ,5/ )Y  
    Change in Focus                :       0.000000                            0.000000 X<Za9  
    Tilt Y tolerance on surface (degrees) 3 ^6/j_G  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 <D/al9  
    Change in Focus                :       0.000000                            0.000000 [ET6(_=b  
    Irregularity of surface 1 in fringes G=M] 8+h  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 $CtCOwKZ  
    Change in Focus                :       0.000000                            0.000000 PN F4>)  
    Irregularity of surface 2 in fringes AfWl6a?T8:  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Ph7pd  
    Change in Focus                :       0.000000                            0.000000 ]H2R  
    Irregularity of surface 3 in fringes 993d/z|DX  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 }F{=#Kqn^  
    Change in Focus                :       0.000000                            0.000000 vrcE]5(:s  
    Index tolerance on surface 1 FuP}Kec  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 y~#\#w {  
    Change in Focus                :       0.000000                            0.000000 |paP<$  
    Index tolerance on surface 2 xcSR{IZ  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 <GWR7rUH  
    Change in Focus                :       0.000000                           -0.000000 LZWS^77  
    {Qtq7q.  
    Worst offenders: p?myuNd[  
    Type                      Value      Criterion        Change hjY0w  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 %<U{K;  
    TSTY   2             0.20000000     0.35349910    -0.19053324 WEa>)@  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 ~"mj;5Id  
    TSTX   2             0.20000000     0.35349910    -0.19053324 >_Uj?F:  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ko[TDh$T5  
    TSTY   1             0.20000000     0.42678383    -0.11724851 PKtU:Eg  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 { vfq  
    TSTX   1             0.20000000     0.42678383    -0.11724851 )bW5yG!  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 sMi{"`37  
    TSTY   3             0.20000000     0.42861670    -0.11541563 vj3isI4lU  
    \RE c8nsLy  
    Estimated Performance Changes based upon Root-Sum-Square method: ,RK3eQ  
    Nominal MTF                 :     0.54403234 /_OOPt=G  
    Estimated change            :    -0.36299231 )1_(>|@oi  
    Estimated MTF               :     0.18104003 {% F`%_{"  
    k/#M<z  
    Compensator Statistics: XV2=8#R  
    Change in back focus: yisLypM*  
    Minimum            :        -0.000000 Qq0O0U  
    Maximum            :         0.000000 {,f[r*{Y  
    Mean               :        -0.000000 rbh[j@s@  
    Standard Deviation :         0.000000 IxP^i{/1?  
    b7'F|h^  
    Monte Carlo Analysis: 5^F]tRz-  
    Number of trials: 20 #{>uC&jD  
    t{ H 1u  
    Initial Statistics: Normal Distribution 6$z'wy/*  
    @^wpAQfd4  
      Trial       Criterion        Change $I(}r3r  
          1     0.42804416    -0.11598818 *tG11gR,&  
    Change in Focus                :      -0.400171 {5 Kz'FT  
          2     0.54384387    -0.00018847 Vi,Y@+4  
    Change in Focus                :       1.018470 :)LC gIQo  
          3     0.44510003    -0.09893230 3uO8v{`  
    Change in Focus                :      -0.601922 j)Lo'&Y~=  
          4     0.18154684    -0.36248550 thV Tdz  
    Change in Focus                :       0.920681 Gt'/D>FE0  
          5     0.28665820    -0.25737414 #ko6L3Pi  
    Change in Focus                :       1.253875 wi BuEaUkW  
          6     0.21263372    -0.33139862 -$ali[  
    Change in Focus                :      -0.903878 @H4wHlb  
          7     0.40051424    -0.14351809 <{ # <5 8  
    Change in Focus                :      -1.354815 vrO%XvXW  
          8     0.48754161    -0.05649072 w 06gY  
    Change in Focus                :       0.215922 bZXlJa`'S  
          9     0.40357468    -0.14045766 Wbd_a R (  
    Change in Focus                :       0.281783 S| "TP\o  
         10     0.26315315    -0.28087919 IdmD.k0pJ  
    Change in Focus                :      -1.048393 z"3H{ A  
         11     0.26120585    -0.28282649 w< mqe0  
    Change in Focus                :       1.017611 %Y 2G  
         12     0.24033815    -0.30369419 D9G0k[D,  
    Change in Focus                :      -0.109292 'v+96b/;  
         13     0.37164046    -0.17239188 43F^J%G  
    Change in Focus                :      -0.692430 %\l0-RA@<  
         14     0.48597489    -0.05805744 _0*=u$~R  
    Change in Focus                :      -0.662040 5IO3 %p?  
         15     0.21462327    -0.32940907 Hq-v@@0 *  
    Change in Focus                :       1.611296 oo'iwq-\  
         16     0.43378226    -0.11025008 Y}ky/?q  
    Change in Focus                :      -0.640081 b8e*Pv/  
         17     0.39321881    -0.15081353 +ruj  
    Change in Focus                :       0.914906 4zwif&  
         18     0.20692530    -0.33710703 U#$:\fT  
    Change in Focus                :       0.801607 R1~7F{FW  
         19     0.51374068    -0.03029165 m9k2h1  
    Change in Focus                :       0.947293 >["Kd.ye  
         20     0.38013374    -0.16389860 Jb 6&  
    Change in Focus                :       0.667010 E~qK&7+  
    [@zkv)D6  
    Number of traceable Monte Carlo files generated: 20 {YfYIt=.  
    ~(M*6b  
    Nominal     0.54403234 78gob&p?  
    Best        0.54384387    Trial     2 BHIM'24bp  
    Worst       0.18154684    Trial     4 )biX8yq hR  
    Mean        0.35770970 fA;x{0CAMX  
    Std Dev     0.11156454 np= J:v4  
    Zq9>VqGe  
    KM EXT$p  
    Compensator Statistics: }el,^~  
    Change in back focus: 3k`NNA  
    Minimum            :        -1.354815 })q]g Mj  
    Maximum            :         1.611296 EyzY2>"^  
    Mean               :         0.161872 A03I-^0g+  
    Standard Deviation :         0.869664 rC~_:uXtE  
    p+!f(H  
    90% >       0.20977951               <'VA=orD  
    80% >       0.22748071               "hz>{oe  
    50% >       0.38667627               *pY/5? g  
    20% >       0.46553746               ;A`IYRzt  
    10% >       0.50064115                g+VRT, r  
    ;Kt'Sit  
    End of Run. T$f:[ye]Z  
    #V,LNX)  
    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 rUGZjLIGqz  
    tvv[$ b&  
    _3*: y/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 @<0h"i x  
    ik8|9m4/  
    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                 kxt\{iy4  
    80% >       0.22748071                 m9\@kA  
    50% >       0.38667627                 l"2^S6vU  
    20% >       0.46553746                 &ryl$!!3H  
    10% >       0.50064115 =*@MQ  
    !y[}|  
    最后这个数值是MTF值呢，还是MTF的公差？ IBn'iE[>  
    JNU"5sB  
    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？？？   [flu |v  
    @]?? +f}#  
    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  : Muc*?wB`  
    90% >       0.20977951                 mTb2d?NS  
    80% >       0.22748071                 m\}\RnZu  
    50% >       0.38667627                 I2Or& _  
    20% >       0.46553746                 g[D,\  
    10% >       0.50064115 c!(~BH3p  
    ....... +i q+  
    4/mj"PBKL  
    q)z1</B-  
    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   g^<q L|  
    Mode                : Sensitivities "#eNFCo7k  
    Sampling            : 2 s_Ge22BZ  
    Nominal Criterion   : 0.54403234 w3]0 !) t1  
    Test Wavelength     : 0.6328 K&"Pm9  
    :BZx ) HxQ  
    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？ C_khd"  
    +EB,7<5<  
    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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