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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 >: W-C{%  
    Rgfc29(8  
    H7yg9zFT N  
    Ff Yd+]+?  
    然后添加了默认公差分析，基本没变 n(Q\' ,C  
    ] [HGzHA  
    mP)3cc5T  
    d@D;'2}Yc  
    然后运行分析的结果如下： ,\S pjE  
    _Vo)<--+I  
    Analysis of Tolerances W) 33;E/}  
    0tW<LR-}E  
    File : E:\光学设计资料\zemax练习\f500.ZMX aW=By)S!Y  
    Title: V{T{0b" \U  
    Date : TUE JUN 21 2011 iBKb/Oi6  
    )@<HCRQ'q  
    Units are Millimeters. joChML_  
    All changes are computed using linear differences. tIyuzc~U  
    TDAWI_83-  
    Paraxial Focus compensation only. up3?$hUc.  
    8NaL{j1`  
    WARNING: Solves should be removed prior to tolerancing. 'n l RY5@2  
    Z@uTkqG)  
    Mnemonics: BLL]^qN;Y  
    TFRN: Tolerance on curvature in fringes. j!lAxlOX  
    TTHI: Tolerance on thickness. C@y}*XV[b  
    TSDX: Tolerance on surface decentering in x. (Pk"NEP   
    TSDY: Tolerance on surface decentering in y. Ue{vg$5||  
    TSTX: Tolerance on surface tilt in x (degrees). %ezb^O_6v  
    TSTY: Tolerance on surface tilt in y (degrees). $Wr\ [P:  
    TIRR: Tolerance on irregularity (fringes). yHWi [7$  
    TIND: Tolerance on Nd index of refraction. ^])e[RN7?n  
    TEDX: Tolerance on element decentering in x. >Lw}KO`  
    TEDY: Tolerance on element decentering in y. @,x_i8  
    TETX: Tolerance on element tilt in x (degrees). YH)Opk  
    TETY: Tolerance on element tilt in y (degrees). p{ @CoOn  
     Y8)E]D  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ~!nLbK2  
    JJ/1daj  
    WARNING: Boundary constraints on compensators will be ignored. [F/^J|VMV  
    ^w:OS5%R  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm L bJtpwz>z  
    Mode                : Sensitivities yaH Trh%  
    Sampling            : 2 .7 (DxN  
    Nominal Criterion   : 0.54403234 5l41Q  
    Test Wavelength     : 0.6328 6X@mPj[/  
    DR k]{^C~  
    $?FS00p*|X  
    Fields: XY Symmetric Angle in degrees u(pdP"  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY |Z`M*.d+  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 I?_E,.)[ I  
    <u/a`E?  
    Sensitivity Analysis: Qw24/DJK  
    N#(jK1` y  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| nE/=:{~Ws  
    Type                      Value      Criterion        Change          Value      Criterion        Change SU?wFCGT%  
    Fringe tolerance on surface 1 S5i+vUI8C  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 s1X]RXX&j  
    Change in Focus                :      -0.000000                            0.000000 I2TD.wuIW  
    Fringe tolerance on surface 2 1&"-*)  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 kWB, ;7  
    Change in Focus                :       0.000000                            0.000000 rkxW UDl   
    Fringe tolerance on surface 3 6( >3P  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 NTqo`VWe  
    Change in Focus                :      -0.000000                            0.000000 <=q*N;=T,  
    Thickness tolerance on surface 1 u-m%=2  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 M'yO+bu  
    Change in Focus                :       0.000000                            0.000000 <"* "1(wN  
    Thickness tolerance on surface 2 wA?@v|,dZ  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 {mNdL J  
    Change in Focus                :       0.000000                           -0.000000 o_iEkn  
    Decenter X tolerance on surfaces 1 through 3 12idM*  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 h^}_YaT\  
    Change in Focus                :       0.000000                            0.000000 /&CUspb  
    Decenter Y tolerance on surfaces 1 through 3 p3g4p  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 +'-rTi\  
    Change in Focus                :       0.000000                            0.000000 A#<vG1  
    Tilt X tolerance on surfaces 1 through 3 (degrees) |y.zo cBj  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 {tPnj_|n<  
    Change in Focus                :       0.000000                            0.000000 _1sP.0 t  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) |5W8Q|>%  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 i-`,/e~XT  
    Change in Focus                :       0.000000                            0.000000 nz^nptw  
    Decenter X tolerance on surface 1 h ~ $&  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671  AlO,o[0  
    Change in Focus                :       0.000000                            0.000000 #C4|@7w%  
    Decenter Y tolerance on surface 1 )AOPiC$jL  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Q~phGD3!~  
    Change in Focus                :       0.000000                            0.000000 Q/p(#/y#b  
    Tilt X tolerance on surface (degrees) 1 yL.^ =  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 l$F_"o?&S@  
    Change in Focus                :       0.000000                            0.000000 ji }#MBac  
    Tilt Y tolerance on surface (degrees) 1  L#n}e7Y9  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 +4Q[N;[+*  
    Change in Focus                :       0.000000                            0.000000 ^%;"[r  
    Decenter X tolerance on surface 2 29%=:*R$  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 b7bSTFZxC  
    Change in Focus                :       0.000000                            0.000000 ~]&B >q  
    Decenter Y tolerance on surface 2 @d&g/ccMxd  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 z OtkC3hY  
    Change in Focus                :       0.000000                            0.000000 8/Mx5~ R  
    Tilt X tolerance on surface (degrees) 2 sc%dh?m7  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Vn'?3Eb<  
    Change in Focus                :       0.000000                            0.000000 aVP5%  
    Tilt Y tolerance on surface (degrees) 2 J;~E<_"Hn  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 OZ^h\m4  
    Change in Focus                :       0.000000                            0.000000 3Y`>6A=  
    Decenter X tolerance on surface 3 Q\|18wkW  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 SZ/(\kQ6  
    Change in Focus                :       0.000000                            0.000000 mH)OB?+lq  
    Decenter Y tolerance on surface 3 [<yz)<<  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 mf}\s]_c  
    Change in Focus                :       0.000000                            0.000000 2 l(Dee Y  
    Tilt X tolerance on surface (degrees) 3 p'}lN|"{O  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 w,Q)@]_  
    Change in Focus                :       0.000000                            0.000000 ~ 7}]  
    Tilt Y tolerance on surface (degrees) 3 QWw"K$l  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 zj{(p Z1  
    Change in Focus                :       0.000000                            0.000000 '*4iqP R;  
    Irregularity of surface 1 in fringes p5-<P?B  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 y:.?5KsPI  
    Change in Focus                :       0.000000                            0.000000 &U&Zo@ot"x  
    Irregularity of surface 2 in fringes 6}ftBmv  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 x9%-plP  
    Change in Focus                :       0.000000                            0.000000 dMJ!>l>2  
    Irregularity of surface 3 in fringes -KiRj!v|  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 kbhX?; <`  
    Change in Focus                :       0.000000                            0.000000 M6_-f ;.  
    Index tolerance on surface 1 &$F[/[Ds+  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 6 Uw;C84!  
    Change in Focus                :       0.000000                            0.000000 Aq"PG}Ic  
    Index tolerance on surface 2 g5}lLKT  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 VHW`NP 5Jl  
    Change in Focus                :       0.000000                           -0.000000 ,Aj }]h\L  
    \!<"7=(J{4  
    Worst offenders: jn$j^ 51`C  
    Type                      Value      Criterion        Change /'4Q{8.a  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 >ZeEX, N  
    TSTY   2             0.20000000     0.35349910    -0.19053324 r1G8]agO  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 =&2$/YX0D  
    TSTX   2             0.20000000     0.35349910    -0.19053324 I8k  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 5mavcle{4r  
    TSTY   1             0.20000000     0.42678383    -0.11724851 :_Fxy5}  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Sph*1c(R  
    TSTX   1             0.20000000     0.42678383    -0.11724851 c4 5?St  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 H* /&A9("  
    TSTY   3             0.20000000     0.42861670    -0.11541563 4gOgWBv  
    :G 5C ]'t  
    Estimated Performance Changes based upon Root-Sum-Square method: 1~@|e Wr|  
    Nominal MTF                 :     0.54403234 IY)5.E _  
    Estimated change            :    -0.36299231 JT)k  
    Estimated MTF               :     0.18104003 ~C| ,b"  
    s@~/x5jwCs  
    Compensator Statistics: <Oa9oM},d  
    Change in back focus: t#5:\U5r.  
    Minimum            :        -0.000000 G3dh M#!  
    Maximum            :         0.000000 <HF-2?`  
    Mean               :        -0.000000 sJ~P:g  
    Standard Deviation :         0.000000 l3p3tT3+  
    3gc"_C\$  
    Monte Carlo Analysis: t77'fm  
    Number of trials: 20 K]<u8eF  
    io2@}xZF  
    Initial Statistics: Normal Distribution Gw{+xz KJ  
    ao$):,2*  
      Trial       Criterion        Change h0Jl_f#Y  
          1     0.42804416    -0.11598818 N09KVz2Q  
    Change in Focus                :      -0.400171 xNX'~B^4d  
          2     0.54384387    -0.00018847 X NE+(Bt  
    Change in Focus                :       1.018470 8l23%iWxe  
          3     0.44510003    -0.09893230 QNArZ6UQ  
    Change in Focus                :      -0.601922 1lcnRHO  
          4     0.18154684    -0.36248550 kA^A mfba  
    Change in Focus                :       0.920681 .C= I^  
          5     0.28665820    -0.25737414 v[&'k\  
    Change in Focus                :       1.253875 /^2CGcT(  
          6     0.21263372    -0.33139862 y5u\j{?Te  
    Change in Focus                :      -0.903878 HO5d%85  
          7     0.40051424    -0.14351809 yM ,VrUh  
    Change in Focus                :      -1.354815 6Z8l8:r-6  
          8     0.48754161    -0.05649072 Qq3fZ=  
    Change in Focus                :       0.215922 t`u!]DHv  
          9     0.40357468    -0.14045766 Tpzw=bC^  
    Change in Focus                :       0.281783 }OrYpZob  
         10     0.26315315    -0.28087919 S}7>RHe  
    Change in Focus                :      -1.048393 "2;N2=~7  
         11     0.26120585    -0.28282649 3LW[H+k  
    Change in Focus                :       1.017611 2 B` 8eb  
         12     0.24033815    -0.30369419 *Jt8  
    Change in Focus                :      -0.109292 +'XhC#:  
         13     0.37164046    -0.17239188 hYb9`0G"2  
    Change in Focus                :      -0.692430 IN^_BKQt  
         14     0.48597489    -0.05805744 F=}Z51|:~  
    Change in Focus                :      -0.662040 \hbiU ]  
         15     0.21462327    -0.32940907 _M5Xk?e=  
    Change in Focus                :       1.611296 54q3R`y  
         16     0.43378226    -0.11025008 vg(K$o{BT  
    Change in Focus                :      -0.640081 hhmGv9P  
         17     0.39321881    -0.15081353 doD>m?rig3  
    Change in Focus                :       0.914906 hZN<Yd8:  
         18     0.20692530    -0.33710703 kon=il<@  
    Change in Focus                :       0.801607 'ere!:GJD  
         19     0.51374068    -0.03029165 $bGD%9 z  
    Change in Focus                :       0.947293 U9#WN.noG  
         20     0.38013374    -0.16389860 ,%hj cGX11  
    Change in Focus                :       0.667010 %&<W(|U1<  
    >Z\BfH  
    Number of traceable Monte Carlo files generated: 20 DB@EVH  
    >}SRSqJu  
    Nominal     0.54403234 X/+OF'po  
    Best        0.54384387    Trial     2 ;fGx;D  
    Worst       0.18154684    Trial     4 n93zD*;5  
    Mean        0.35770970 XP;x@I#l  
    Std Dev     0.11156454 (vQ+e  
    yVS\Q,:J9  
    de YyaV  
    Compensator Statistics: s;{K!L@  
    Change in back focus: 70Ka!  
    Minimum            :        -1.354815 E*|tOj9`1n  
    Maximum            :         1.611296 VJ{pN~_1  
    Mean               :         0.161872 NHiq^ojk  
    Standard Deviation :         0.869664 =Od>;|]m  
    Dg2uE8k  
    90% >       0.20977951               FC}oL"kk  
    80% >       0.22748071               iV hJH4  
    50% >       0.38667627               h^M^7S  
    20% >       0.46553746               7& 6Y  
    10% >       0.50064115                f=I:DkR  
    Pp_V5,i\  
    End of Run. @ yxt($G  
    S()Za@ [a$  
    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 |F!F{d^p  
    4P kfUMX  
    ]rW8y%yD  
    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 aqr!oxn?t  
    ;V.vfar  
    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                 _#'9kx|)  
    80% >       0.22748071                 DO^y;y>  
    50% >       0.38667627                 y1,5$0@G  
    20% >       0.46553746                 QIAR  
    10% >       0.50064115 +ld;k/  
    ;KcFy@ 6q5  
    最后这个数值是MTF值呢，还是MTF的公差？ arj$dAW  
    s4t0f_vj`  
    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？？？   6?SFNDQ"C  
    z="L4  
    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  : XGIpUz  
    90% >       0.20977951                 $4Y&j}R  
    80% >       0.22748071                 |<Bpv{]P  
    50% >       0.38667627                 M(5D'4.  
    20% >       0.46553746                 h5!d  
    10% >       0.50064115 J3&Sj{ o  
    ....... }vD;DSz:  
    Gl>E[iO  
    <E}N=J'uJ  
    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   0n5!B..m}  
    Mode                : Sensitivities `[@VxGy_  
    Sampling            : 2 6 [ _ fD  
    Nominal Criterion   : 0.54403234 ITc `]K  
    Test Wavelength     : 0.6328 Nt,~b^9  
    n?Zf/T  
    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？ O+vcs4  
    mt^`1ekoY  
    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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