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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'?Y0Wt  
    D/"[/!  
    w%g@X6  
    FU E/uh  
    然后添加了默认公差分析，基本没变 .TSj8,  
    ;Z%ysLA  
    ?TLMoqmXM{  
    _A;jtS)SY  
    然后运行分析的结果如下： D N GNc  
    nxA Y]Q  
    Analysis of Tolerances u yzc"d i  
    5M;fh)fT  
    File : E:\光学设计资料\zemax练习\f500.ZMX ck){N?y  
    Title: 4t|ril``]  
    Date : TUE JUN 21 2011 C7[_#1Oz  
    K, WNM S  
    Units are Millimeters. D\jRF-z  
    All changes are computed using linear differences. cO.U*UTmX  
    G!C2[:[g  
    Paraxial Focus compensation only. bW7tJ  
    hbD@B.PD  
    WARNING: Solves should be removed prior to tolerancing. hHm &u^xY  
    ) ^'Q@W  
    Mnemonics: &HNJ '  
    TFRN: Tolerance on curvature in fringes. U@@#f;&  
    TTHI: Tolerance on thickness. s7A{<>:  
    TSDX: Tolerance on surface decentering in x. be|k"s|6)  
    TSDY: Tolerance on surface decentering in y. MS)#S&  
    TSTX: Tolerance on surface tilt in x (degrees). h/ ?8F^C#v  
    TSTY: Tolerance on surface tilt in y (degrees). 47ppyh6@  
    TIRR: Tolerance on irregularity (fringes). S#8wnHq  
    TIND: Tolerance on Nd index of refraction. ),(ejRP'r  
    TEDX: Tolerance on element decentering in x. MRwls@z=  
    TEDY: Tolerance on element decentering in y. EW%%W6O6  
    TETX: Tolerance on element tilt in x (degrees). `(vgBz`e[  
    TETY: Tolerance on element tilt in y (degrees). O[+S/6uy  
    3;zJ\a.+  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. -v'7;L0K  
    5?r#6:(yI  
    WARNING: Boundary constraints on compensators will be ignored. >_!pg<{,  
    ClCb.Ozj4  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm @NWjYHM[`  
    Mode                : Sensitivities E ~<SEA  
    Sampling            : 2 YAv-5  
    Nominal Criterion   : 0.54403234 s#/JMvQ#  
    Test Wavelength     : 0.6328 QXY-?0RO#  
    #o SQWC=T  
    G"T)+! 6t  
    Fields: XY Symmetric Angle in degrees PspH[db  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Qw!cd-zc  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ^>gRK*,  
    p+ SFeUp  
    Sensitivity Analysis: nyWA(%N1  
    -==@7*x!Z  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| +Pd&YfU9  
    Type                      Value      Criterion        Change          Value      Criterion        Change ?7 e|gpQ|  
    Fringe tolerance on surface 1 B q+RFo  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 i[`nu#n/  
    Change in Focus                :      -0.000000                            0.000000 Q.7Rv XNw8  
    Fringe tolerance on surface 2 [yM{A<\L  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 $v#Q'?jE  
    Change in Focus                :       0.000000                            0.000000 O&.^67\|  
    Fringe tolerance on surface 3 dd>|1'-]  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Wp/!;  
    Change in Focus                :      -0.000000                            0.000000 O@{ JB  
    Thickness tolerance on surface 1 >d!w&0z>  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Vy.A`Hz  
    Change in Focus                :       0.000000                            0.000000 m3 C&QdjRp  
    Thickness tolerance on surface 2 l~!Tnp\M  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ;n$j?n+|  
    Change in Focus                :       0.000000                           -0.000000 fQi7e5  
    Decenter X tolerance on surfaces 1 through 3 %Rj:r!XB:  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 \Si@t{`O  
    Change in Focus                :       0.000000                            0.000000 9:4PJ%R9  
    Decenter Y tolerance on surfaces 1 through 3 izsAn"v  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 !/znovoD  
    Change in Focus                :       0.000000                            0.000000 7Oe |:Z  
    Tilt X tolerance on surfaces 1 through 3 (degrees) O Ul+es  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 VJJGTkm  
    Change in Focus                :       0.000000                            0.000000 x tg3~/H  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ?v PwI  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 767xCP  
    Change in Focus                :       0.000000                            0.000000 $'btfo4H  
    Decenter X tolerance on surface 1 $%ZEP> ]  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 rQg7r>%Q  
    Change in Focus                :       0.000000                            0.000000 O9wZx%<  
    Decenter Y tolerance on surface 1 3.U5Each-  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 `=Pn{JaD  
    Change in Focus                :       0.000000                            0.000000 *q_ .y\D  
    Tilt X tolerance on surface (degrees) 1 hAi50q;z  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ]b4*`}\  
    Change in Focus                :       0.000000                            0.000000 htk5\^(X  
    Tilt Y tolerance on surface (degrees) 1 A<2_V1  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 $]|fjB#D  
    Change in Focus                :       0.000000                            0.000000 SoeL_#+^W  
    Decenter X tolerance on surface 2 ke_Dd?  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 hu%rp{m^,  
    Change in Focus                :       0.000000                            0.000000 \2 &)b  
    Decenter Y tolerance on surface 2 2c@4<kyfP  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 "]>JtK  
    Change in Focus                :       0.000000                            0.000000 ,+<NP}Yg#G  
    Tilt X tolerance on surface (degrees) 2 ]S9~2;2^,  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Z2~;u[0a[  
    Change in Focus                :       0.000000                            0.000000 Kyw Dp37^  
    Tilt Y tolerance on surface (degrees) 2 zm4Okg)w@  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 +RQlMAB  
    Change in Focus                :       0.000000                            0.000000 |0:< Z(  
    Decenter X tolerance on surface 3 D@*<p h=  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 5jD2%"YUV  
    Change in Focus                :       0.000000                            0.000000 s <Pk[7`*  
    Decenter Y tolerance on surface 3 -'3~Y 2#  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 o#gb+[  
    Change in Focus                :       0.000000                            0.000000 unKTa*U^q  
    Tilt X tolerance on surface (degrees) 3 a<7Ui;^@  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 { %X /w'|  
    Change in Focus                :       0.000000                            0.000000 sYM3&ikyHI  
    Tilt Y tolerance on surface (degrees) 3 "f/lm 2<  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 W(a31d  
    Change in Focus                :       0.000000                            0.000000 W}#eQ|oCV  
    Irregularity of surface 1 in fringes :pj#t$:!  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 0G ^73Z  
    Change in Focus                :       0.000000                            0.000000 JYA$_T  
    Irregularity of surface 2 in fringes -:b0fKn  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 | YmQO#''  
    Change in Focus                :       0.000000                            0.000000 Jj4!O3\I  
    Irregularity of surface 3 in fringes ' _Ij9{M  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ,0O9!^  
    Change in Focus                :       0.000000                            0.000000 (b%&DyOt  
    Index tolerance on surface 1 p9rnhqH6  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 {jO:9O @  
    Change in Focus                :       0.000000                            0.000000 Wcd;B7OH  
    Index tolerance on surface 2 T(zE RWo  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872  vp7J';  
    Change in Focus                :       0.000000                           -0.000000 )!J0e-T-8O  
    udVEO n$  
    Worst offenders: hw ]x T5  
    Type                      Value      Criterion        Change {^zieP!  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 _]:wltPv  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Z~)Bh~^A  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 .si!`?K%[  
    TSTX   2             0.20000000     0.35349910    -0.19053324 b$\3Y'":  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 5:v"^"Sz  
    TSTY   1             0.20000000     0.42678383    -0.11724851 E+-ah vk  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 %_C!3kKv~  
    TSTX   1             0.20000000     0.42678383    -0.11724851 GyQu?`  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 _tDSG]  
    TSTY   3             0.20000000     0.42861670    -0.11541563 :E'uV" j%  
    l2Z!;Wm(  
    Estimated Performance Changes based upon Root-Sum-Square method: 21i?$ uU  
    Nominal MTF                 :     0.54403234 w:%3]2c  
    Estimated change            :    -0.36299231 I?c "\Fe  
    Estimated MTF               :     0.18104003 +EG?8L,z  
    O2./?Ye  
    Compensator Statistics: YLs%u=e($  
    Change in back focus: TpXbJ]o9  
    Minimum            :        -0.000000 uj#bK 7  
    Maximum            :         0.000000 :k9n 9  
    Mean               :        -0.000000 sbn|D\p  
    Standard Deviation :         0.000000 ~k>H4hV3  
    /NRdBN  
    Monte Carlo Analysis:  ;LEO+,6  
    Number of trials: 20 Y&M}3H>E  
    _Bh-*e2k  
    Initial Statistics: Normal Distribution ^y:!=nX^  
    Mg3>/!  
      Trial       Criterion        Change FVw;`{  
          1     0.42804416    -0.11598818 /J{ e _a  
    Change in Focus                :      -0.400171 5n,?&+*L  
          2     0.54384387    -0.00018847 <j CD^  
    Change in Focus                :       1.018470 m/}(dT;  
          3     0.44510003    -0.09893230 2MS-e}mi  
    Change in Focus                :      -0.601922 ?Pg{nlJvq  
          4     0.18154684    -0.36248550 :: IAXGH)  
    Change in Focus                :       0.920681 Z,~Bz@5`"  
          5     0.28665820    -0.25737414 cb|cYCo5  
    Change in Focus                :       1.253875 XL!\Lx  
          6     0.21263372    -0.33139862 NQb!?w  
    Change in Focus                :      -0.903878 l0AVyA4RFV  
          7     0.40051424    -0.14351809 sXe=4`O  
    Change in Focus                :      -1.354815 7i(U?\A;.  
          8     0.48754161    -0.05649072 `-Yo$b;:  
    Change in Focus                :       0.215922 fePt[U)2  
          9     0.40357468    -0.14045766 ?[<C,w~$`  
    Change in Focus                :       0.281783 I !\;NVhv  
         10     0.26315315    -0.28087919 ^|Bpo(  
    Change in Focus                :      -1.048393 7bcl^~lY  
         11     0.26120585    -0.28282649 4rX jso|  
    Change in Focus                :       1.017611 qu>5 rg-  
         12     0.24033815    -0.30369419 ;&="aD  
    Change in Focus                :      -0.109292 q]PeS~PjF\  
         13     0.37164046    -0.17239188 %K@s0uQ  
    Change in Focus                :      -0.692430 79}voDFd  
         14     0.48597489    -0.05805744 E1'| ;}/  
    Change in Focus                :      -0.662040 7,vvL8\NHu  
         15     0.21462327    -0.32940907 Wk3R6 V  
    Change in Focus                :       1.611296 "^?|=sQ  
         16     0.43378226    -0.11025008 A\Ax5eeL  
    Change in Focus                :      -0.640081 m3o+iYkMD  
         17     0.39321881    -0.15081353 s^O>PEX&<I  
    Change in Focus                :       0.914906 ]<y _ =>  
         18     0.20692530    -0.33710703 f( =3'wQ  
    Change in Focus                :       0.801607 (jQ]<q%P  
         19     0.51374068    -0.03029165  -w7g}  
    Change in Focus                :       0.947293 Hzos$1DJ  
         20     0.38013374    -0.16389860 ';T=kS<^_  
    Change in Focus                :       0.667010 8M9LY9C  
    . Y@)3  
    Number of traceable Monte Carlo files generated: 20 JjO="Cmk/  
    K8>-%ns  
    Nominal     0.54403234 s+mNr3  
    Best        0.54384387    Trial     2 #f *,mY|>  
    Worst       0.18154684    Trial     4 {/Mz /|%  
    Mean        0.35770970 ds> V|}f[  
    Std Dev     0.11156454 J2tD).G  
    JQ9JWu%a  
    BNA`Cc1VV  
    Compensator Statistics: e-@=QI^,  
    Change in back focus: >$^v@jf  
    Minimum            :        -1.354815 JI&ik_k3  
    Maximum            :         1.611296 QY$Z,#V)  
    Mean               :         0.161872 Mv\odf\]  
    Standard Deviation :         0.869664 UXU!sd  
     D I` M  
    90% >       0.20977951               NhP&sQO  
    80% >       0.22748071               ;|nC;D]  
    50% >       0.38667627               pUTC~|j%:  
    20% >       0.46553746               MXQ S6F#  
    10% >       0.50064115                .W[[Z;D  
    nMz~.^Q-  
    End of Run. Kr;7~`$[  
    >9?BJv2  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 [ij8h,[~]  
    e+_~a8 -|  
    _PI w""ssr  
    是大于0.6左右的，难道我按照这个默认的公差来加工的话，只有10%的才可能大于0.5？那太低了啊，请问这该怎么进行进一步处理。或者之前哪有问题  (C1@f!Z  
    NTj:+z0  
    不吝赐教
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    只看该作者 1楼 发表于: 2011-06-21
    我又试了试，原来是得根据上面的结果不断修改公差，放松或者变紧，然后在做公差分析，不断提高蒙特卡罗的结果。但是比如就拿我这个来说，理想是达到30lp处>0.6，那么实际做蒙特卡罗公差分析时，百分之多少以上的MTF是合格的呢？
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 'Z<V(;W  
    80% >       0.22748071                 vCPiT2G  
    50% >       0.38667627                 |C MKY  
    20% >       0.46553746                 =z=$S]qN  
    10% >       0.50064115 3A~53W$M  
    .6@qU}  
    最后这个数值是MTF值呢，还是MTF的公差？ ]i}3`e?  
    >:2Br(S  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   d#?.G3YmK  
    0cd`. ZF  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : ``~7z;E%@  
    90% >       0.20977951                 G~oGBq6Gz  
    80% >       0.22748071                 wnf'-dw]  
    50% >       0.38667627                 ryd*Ha">I  
    20% >       0.46553746                 {8NnRnzU  
    10% >       0.50064115 )G7")I J/X  
    ....... D ^ mfWJS  
    }Q7 ~tu  
    r!qr'Ht<  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   ?8cgQf$  
    Mode                : Sensitivities /8Sg<  
    Sampling            : 2 JLS|G?#0  
    Nominal Criterion   : 0.54403234 SxC   
    Test Wavelength     : 0.6328 7*bUy)UZ  
    /D]?+<h1  
    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？ D4e*Wwk  
    3b1;f)t  
    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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