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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 tZ]|3wp  
    [UVxtMJ  
    DGx9 \8^  
    \ :8eN}B  
    然后添加了默认公差分析，基本没变 rdsm /^,s  
    av(d0E}}b  
    u":D{+wC |  
    >o=3RB=Fh  
    然后运行分析的结果如下： gOI #$-L  
    .(,4a<I?%N  
    Analysis of Tolerances Hut au^l  
    .[hQ#3)W  
    File : E:\光学设计资料\zemax练习\f500.ZMX ~EIY(^|py  
    Title: JrTSu`S('  
    Date : TUE JUN 21 2011 n<p`OKIV3  
    x=yU }lsV  
    Units are Millimeters. qwu++9BM  
    All changes are computed using linear differences. O/wl";-  
    L!3AiAnr  
    Paraxial Focus compensation only. ~y}M GUEC  
    \`#;J?Y|`F  
    WARNING: Solves should be removed prior to tolerancing. `)F lb|da  
    ObIi$uJX  
    Mnemonics: FDaHsiI:  
    TFRN: Tolerance on curvature in fringes. %Yg;s'F>#q  
    TTHI: Tolerance on thickness. mf'N4y%  
    TSDX: Tolerance on surface decentering in x. <0T4MR7  
    TSDY: Tolerance on surface decentering in y. CJ_X:Frj)  
    TSTX: Tolerance on surface tilt in x (degrees). !ZbNW4rIP  
    TSTY: Tolerance on surface tilt in y (degrees). ]<q{0.  
    TIRR: Tolerance on irregularity (fringes). V; 1r  
    TIND: Tolerance on Nd index of refraction. Wxg,y{(`  
    TEDX: Tolerance on element decentering in x. z12[vN  
    TEDY: Tolerance on element decentering in y. WIXzxI<)  
    TETX: Tolerance on element tilt in x (degrees). I]>-~_  
    TETY: Tolerance on element tilt in y (degrees). hA?j"y0?  
    VuwBnQ.2k  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. $=$I^hV  
    * eL%[B  
    WARNING: Boundary constraints on compensators will be ignored. bCk_ZA  
    g/so3F%v .  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm S(5.y%"<  
    Mode                : Sensitivities __c:$7B/4U  
    Sampling            : 2 mSAuS)YD  
    Nominal Criterion   : 0.54403234 StWDNAf)  
    Test Wavelength     : 0.6328 Tfhg\++u  
    5oplV(<?*S  
    geWis(#J  
    Fields: XY Symmetric Angle in degrees ?rWqFM:hb  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY *9%<}z  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 a=k+:=%y  
    &by,uVb=|{  
    Sensitivity Analysis: UuAn`oYhV  
    zzuDI_,/  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| F8Y D:   
    Type                      Value      Criterion        Change          Value      Criterion        Change OekcU% C  
    Fringe tolerance on surface 1 aZ2liR\QE  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 E8=.TM]L  
    Change in Focus                :      -0.000000                            0.000000 &6,GX7]Fo  
    Fringe tolerance on surface 2 dW<.  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 DTN@b!  
    Change in Focus                :       0.000000                            0.000000 YWM$%   
    Fringe tolerance on surface 3 b ,7:=-D  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 GY<Y,  
    Change in Focus                :      -0.000000                            0.000000 jt tlzCDn  
    Thickness tolerance on surface 1 {gl-tRC3  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 8 +xLi4Pw  
    Change in Focus                :       0.000000                            0.000000 RX>kOp29  
    Thickness tolerance on surface 2 Ka2U@fK"  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 WW@/q`h  
    Change in Focus                :       0.000000                           -0.000000 'Y6{89y  
    Decenter X tolerance on surfaces 1 through 3 NaG1j+LN  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 J'Yj_  
    Change in Focus                :       0.000000                            0.000000 TxwZA  
    Decenter Y tolerance on surfaces 1 through 3 1QE-[|  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 b0x9}  
    Change in Focus                :       0.000000                            0.000000 (SoV2[|  
    Tilt X tolerance on surfaces 1 through 3 (degrees) k$}XZ,Q  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 1 @E<5rp o  
    Change in Focus                :       0.000000                            0.000000 dI-=0v-|  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) CBs0>M/  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 &pK1S>t  
    Change in Focus                :       0.000000                            0.000000 A2uSH@4  
    Decenter X tolerance on surface 1 ;38DBo  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Lh"Je-x<<  
    Change in Focus                :       0.000000                            0.000000 4eYj.=I  
    Decenter Y tolerance on surface 1 W$B>O  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 `f*?|)  
    Change in Focus                :       0.000000                            0.000000 ;_of'  
    Tilt X tolerance on surface (degrees) 1 9Z6] ];8E  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Ne@Iv)g?  
    Change in Focus                :       0.000000                            0.000000 <y6M@(b  
    Tilt Y tolerance on surface (degrees) 1 s41<e"  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 "X>Z!>  
    Change in Focus                :       0.000000                            0.000000 ~!,'z  
    Decenter X tolerance on surface 2 n O$(\ z)  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 B y6:  
    Change in Focus                :       0.000000                            0.000000 % &4sHDP  
    Decenter Y tolerance on surface 2 9,82Uta  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 JV/K ouL  
    Change in Focus                :       0.000000                            0.000000 ]Tf.KUm  
    Tilt X tolerance on surface (degrees) 2 MT$OjH'Q`  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 }a"T7y23  
    Change in Focus                :       0.000000                            0.000000 (# eB %  
    Tilt Y tolerance on surface (degrees) 2 . CLiv  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ,/m<=`*N|  
    Change in Focus                :       0.000000                            0.000000 +~  :1H.  
    Decenter X tolerance on surface 3 r=s ,Ath  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 hBLJKSv  
    Change in Focus                :       0.000000                            0.000000 +0.$w  
    Decenter Y tolerance on surface 3 b3H~a2"d  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 niFX8%<hP  
    Change in Focus                :       0.000000                            0.000000 q3VE\&*^F  
    Tilt X tolerance on surface (degrees) 3 -/B}XN W  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 /+"BU-aQk  
    Change in Focus                :       0.000000                            0.000000 x7t<F4  
    Tilt Y tolerance on surface (degrees) 3 ><TuL7+  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 z~A||@4'  
    Change in Focus                :       0.000000                            0.000000 I`t"Na2i  
    Irregularity of surface 1 in fringes :'f#0ox  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 E3_e~yu&  
    Change in Focus                :       0.000000                            0.000000 (JocnM|U  
    Irregularity of surface 2 in fringes j S')!Wcu  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 xFHc+m' m~  
    Change in Focus                :       0.000000                            0.000000 Dsm_T1X  
    Irregularity of surface 3 in fringes oS/<)>\Gv  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 z\oq b) a  
    Change in Focus                :       0.000000                            0.000000 +Ys<V  
    Index tolerance on surface 1 sn+i[  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 jLI(Z  
    Change in Focus                :       0.000000                            0.000000 lHV bn7  
    Index tolerance on surface 2 pTST\0?  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 {Lk~O)E  
    Change in Focus                :       0.000000                           -0.000000 0 4x[@f`  
    *["9;_KD  
    Worst offenders: 4G;+ETp  
    Type                      Value      Criterion        Change u<]-%ha$  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 G>M# BuU  
    TSTY   2             0.20000000     0.35349910    -0.19053324 *,%H1)Tj}  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 KCe =$  
    TSTX   2             0.20000000     0.35349910    -0.19053324 B$ +YK%I  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 F8Rd#^9PD  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ZQD_w#0j  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 5:hajXd  
    TSTX   1             0.20000000     0.42678383    -0.11724851 G+=eu K2]  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 YS{])+s  
    TSTY   3             0.20000000     0.42861670    -0.11541563 1wW8D>f]K  
    I+!w9o2nZ  
    Estimated Performance Changes based upon Root-Sum-Square method: bVQLj}%   
    Nominal MTF                 :     0.54403234 o`+6E q0w  
    Estimated change            :    -0.36299231 d?oupW}uu  
    Estimated MTF               :     0.18104003 mK%!9F V  
    hW~,Uqy  
    Compensator Statistics: " nq4!  
    Change in back focus: -=&r}/&  
    Minimum            :        -0.000000 up=4B  
    Maximum            :         0.000000 !?D PI)  
    Mean               :        -0.000000 <dV|N$WV  
    Standard Deviation :         0.000000 _.' j'j%  
    ~x)Awdlu  
    Monte Carlo Analysis: \wCj$- ;Jt  
    Number of trials: 20 1/j J;}  
    y5kqnibh@  
    Initial Statistics: Normal Distribution ecA:y!N  
    glH&v8  
      Trial       Criterion        Change |+~CdA  
          1     0.42804416    -0.11598818 C;0H _  
    Change in Focus                :      -0.400171 yc8iT`  
          2     0.54384387    -0.00018847 I+kGEHO}  
    Change in Focus                :       1.018470 9.m_3"s  
          3     0.44510003    -0.09893230 TbXp%O:[W  
    Change in Focus                :      -0.601922 MBIt)d@Ix  
          4     0.18154684    -0.36248550 >)R7*^m{'  
    Change in Focus                :       0.920681 UA!-YTh  
          5     0.28665820    -0.25737414 ~ k/'_1)c  
    Change in Focus                :       1.253875 EFW'D=&h8  
          6     0.21263372    -0.33139862 G!RbM.6  
    Change in Focus                :      -0.903878 "A~\$  
          7     0.40051424    -0.14351809 i;s&;_0{  
    Change in Focus                :      -1.354815 MRxzOs  
          8     0.48754161    -0.05649072 j5Vyo>  
    Change in Focus                :       0.215922 M`-#6,m3  
          9     0.40357468    -0.14045766 WNrgqyM  
    Change in Focus                :       0.281783 b6RuYwHWV0  
         10     0.26315315    -0.28087919 n[|&nv6x  
    Change in Focus                :      -1.048393 fJBp,{0  
         11     0.26120585    -0.28282649 g>12!2}  
    Change in Focus                :       1.017611 eGHxiC  
         12     0.24033815    -0.30369419 'H`aQt+  
    Change in Focus                :      -0.109292 ]{jdar^  
         13     0.37164046    -0.17239188 q!\K!W\  
    Change in Focus                :      -0.692430 !o+#T==p  
         14     0.48597489    -0.05805744 luACdC  
    Change in Focus                :      -0.662040 n2zJ'  
         15     0.21462327    -0.32940907 &|'1.^f@;E  
    Change in Focus                :       1.611296 V2Q2(yvdJ  
         16     0.43378226    -0.11025008 H5'/i;  
    Change in Focus                :      -0.640081 *IG} /O.VT  
         17     0.39321881    -0.15081353  F"FGPk  
    Change in Focus                :       0.914906 \HF|&@}hU  
         18     0.20692530    -0.33710703 *v 1hMk  
    Change in Focus                :       0.801607 dYrw&gn  
         19     0.51374068    -0.03029165 i+( k  
    Change in Focus                :       0.947293 ]dHU  
         20     0.38013374    -0.16389860 ~ OD}`  
    Change in Focus                :       0.667010 .:A9*,  
    J.W0F #?  
    Number of traceable Monte Carlo files generated: 20 {U?/u93~  
    lQj3# !1}  
    Nominal     0.54403234 i2j_=X-  
    Best        0.54384387    Trial     2 ghq[oK  
    Worst       0.18154684    Trial     4 [v ( \y  
    Mean        0.35770970 k%YvJXL  
    Std Dev     0.11156454 a'u:1C^\  
    Tf(-Duxz  
    ?9'Ukw` g  
    Compensator Statistics: -L%tiz`_  
    Change in back focus: *`&4< >=n  
    Minimum            :        -1.354815 Z`y%#B6x.  
    Maximum            :         1.611296 J5e  
    Mean               :         0.161872 1O3"W;SR<:  
    Standard Deviation :         0.869664 OPOL-2<wiy  
    MKzIY:u g  
    90% >       0.20977951               21Mr2-#z  
    80% >       0.22748071               C +S  
    50% >       0.38667627               mj:X'BVA  
    20% >       0.46553746               04g=bJ  
    10% >       0.50064115                =$xxkc.~G  
    W: R2e2  
    End of Run. Ox9WH4E  
    f|Dq#(^\  
    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 u}Kc>/AF  
    &v9*D`7L  
    uv,&/ ,;S  
    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 "=8= G  
    uU_lC5A|  
    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                 y?Vsp<  
    80% >       0.22748071                 LYM(eK5V  
    50% >       0.38667627                 ;F3#AO4(  
    20% >       0.46553746                 -bJC+Yn  
    10% >       0.50064115 s,~)5nL  
    8":O\^i  
    最后这个数值是MTF值呢，还是MTF的公差？ F,F1Axf  
    2$S^3$k'  
    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？？？   "WPFZw:9  
    PO1|l-v<Yq  
    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  : m{ya%F  
    90% >       0.20977951                 =z]8;<=pL  
    80% >       0.22748071                 'yq'J)  
    50% >       0.38667627                 4Pm+0=E   
    20% >       0.46553746                 &;V3[ *W"  
    10% >       0.50064115 %s#`i$|z*n  
    ....... C}~/(;1V=  
    REmD*gf  
    2k^dxk~$V;  
    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   )~](qLSl  
    Mode                : Sensitivities yk5T"# '+  
    Sampling            : 2 OoFQ@zE7%  
    Nominal Criterion   : 0.54403234 <?TJ-   
    Test Wavelength     : 0.6328 MI!JZI$z5  
    L-ZJ[#D  
    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？ ,u}n!quA  
    ,x+_/kqx  
    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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