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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 bC>yIjCTn  
    (,Zz&3 AV  
    ff2.| 20  
    omDi<-  
    然后添加了默认公差分析，基本没变 o Q!g!xz  
    #gr+%=S'6C  
     \1c`)  
    i(TDJ@}  
    然后运行分析的结果如下： A1&>L9nUx  
    1+y6W1m^R  
    Analysis of Tolerances )l81R  
    b&_u O  
    File : E:\光学设计资料\zemax练习\f500.ZMX )QJU ]G  
    Title: "!4>gg3r  
    Date : TUE JUN 21 2011 T3PaG\5B  
    e&VR>VJEA  
    Units are Millimeters. _s#/f5<:B  
    All changes are computed using linear differences. AfbA.-  
    t,as{.H{h  
    Paraxial Focus compensation only. L M<=j  
    EIl$"^-  
    WARNING: Solves should be removed prior to tolerancing. 0OoO cc  
    R,b O{2O  
    Mnemonics: 8;dbU*  
    TFRN: Tolerance on curvature in fringes. z]4g`K+  
    TTHI: Tolerance on thickness. A0 w `o  
    TSDX: Tolerance on surface decentering in x. =M km:'1r  
    TSDY: Tolerance on surface decentering in y. 3qd-,qC  
    TSTX: Tolerance on surface tilt in x (degrees). gpTF^.(  
    TSTY: Tolerance on surface tilt in y (degrees). 6 GevO3  
    TIRR: Tolerance on irregularity (fringes). @):NNbtA  
    TIND: Tolerance on Nd index of refraction. M`,Z#)Af  
    TEDX: Tolerance on element decentering in x. . I9] `Q  
    TEDY: Tolerance on element decentering in y. =xQfgj  
    TETX: Tolerance on element tilt in x (degrees). )@&?i.  
    TETY: Tolerance on element tilt in y (degrees). -X[8soz  
    pkMON}"mj  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. nfPl#]ef*  
    f4;8?  
    WARNING: Boundary constraints on compensators will be ignored. OgpH{"  
    yqc(32rF!  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm EG:WE^4  
    Mode                : Sensitivities )-:f;#xJ  
    Sampling            : 2 1RO gUJ;  
    Nominal Criterion   : 0.54403234 .j$bCKXGx  
    Test Wavelength     : 0.6328 d+| ! 6  
    f0`rJ?us  
    }(7QJk5 j  
    Fields: XY Symmetric Angle in degrees R~?;KJ  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY o_^d>Klb8  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ezy5Jqk5%  
    NGeeD?2~  
    Sensitivity Analysis: *Zo o  
    2*;Y%NcP[  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| u$ / ]59  
    Type                      Value      Criterion        Change          Value      Criterion        Change >Ti2E+}[M  
    Fringe tolerance on surface 1 9^h%}>  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 vpw&"?T  
    Change in Focus                :      -0.000000                            0.000000 |ssIUJ  
    Fringe tolerance on surface 2 *"bp}3$^^  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 OU5|m%CmO  
    Change in Focus                :       0.000000                            0.000000 Zkep7L   
    Fringe tolerance on surface 3 vrldRn'*9  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 uT t:/gm  
    Change in Focus                :      -0.000000                            0.000000 8`?j*FV7kq  
    Thickness tolerance on surface 1 U[ungvU1U  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 $%"}N_M  
    Change in Focus                :       0.000000                            0.000000 !rqR]nd  
    Thickness tolerance on surface 2 8 =Lv7G%  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 sN) .Jo  
    Change in Focus                :       0.000000                           -0.000000 ]6[d-$#^ko  
    Decenter X tolerance on surfaces 1 through 3 #\;w::  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ]|BSX-V.%i  
    Change in Focus                :       0.000000                            0.000000 (#"s!!b  
    Decenter Y tolerance on surfaces 1 through 3 YD.^\E4o  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 1KR|i"  
    Change in Focus                :       0.000000                            0.000000 /'_ RI  
    Tilt X tolerance on surfaces 1 through 3 (degrees) tLXw&hFk`g  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 32FGDM  
    Change in Focus                :       0.000000                            0.000000 s;M*5|-  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) .v&h>@'m  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Bj[/ tQ  
    Change in Focus                :       0.000000                            0.000000 0-~x[\>>  
    Decenter X tolerance on surface 1 ? UDvFQ&  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 1@dx(_  
    Change in Focus                :       0.000000                            0.000000 y5D?Bg|M  
    Decenter Y tolerance on surface 1 V-r<v1}M  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 meD (ja  
    Change in Focus                :       0.000000                            0.000000 YU,:3{9,  
    Tilt X tolerance on surface (degrees) 1 fb;"J+  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 c9@jyq_H?  
    Change in Focus                :       0.000000                            0.000000 .O.R  
    Tilt Y tolerance on surface (degrees) 1 @h,$&=HY  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851  (t['  
    Change in Focus                :       0.000000                            0.000000 ck+rOGv7{Z  
    Decenter X tolerance on surface 2 5hK\YTU  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 [k}\{i>  
    Change in Focus                :       0.000000                            0.000000 /~5YTe( F  
    Decenter Y tolerance on surface 2 s@iCfXU  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 o+Z9h1z%,  
    Change in Focus                :       0.000000                            0.000000 X($SBUS6  
    Tilt X tolerance on surface (degrees) 2 R u-rp^a  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 mcG$V0D <{  
    Change in Focus                :       0.000000                            0.000000 HwuPjc#  
    Tilt Y tolerance on surface (degrees) 2 F ;&e5G  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 *v3 |  
    Change in Focus                :       0.000000                            0.000000 93DBZqN  
    Decenter X tolerance on surface 3 eF1%5;" W  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 _q4m7C<  
    Change in Focus                :       0.000000                            0.000000 $3B?  
    Decenter Y tolerance on surface 3 4,DsB'  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ZHasDZ8  
    Change in Focus                :       0.000000                            0.000000 Lc?O K"[m  
    Tilt X tolerance on surface (degrees) 3 .U%"oD  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 elB 8   
    Change in Focus                :       0.000000                            0.000000 W fNMyI  
    Tilt Y tolerance on surface (degrees) 3 74(J7  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 VAt9JE;#  
    Change in Focus                :       0.000000                            0.000000 y*(j{0yd  
    Irregularity of surface 1 in fringes 1U7HS2  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 b\S}?{m5  
    Change in Focus                :       0.000000                            0.000000 sR .j~R  
    Irregularity of surface 2 in fringes wm71,R1  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 9#6/c  
    Change in Focus                :       0.000000                            0.000000 ;# j 82  
    Irregularity of surface 3 in fringes L{pg?#\yC  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 R!G7;m'N1  
    Change in Focus                :       0.000000                            0.000000 -`EoTXT*U  
    Index tolerance on surface 1 )&Bv\Tfjt  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 >cL2PN_y  
    Change in Focus                :       0.000000                            0.000000 c<e\JJY5?  
    Index tolerance on surface 2 w'XgW0j{  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 i@L2W>{P  
    Change in Focus                :       0.000000                           -0.000000 3fTI&2:  
    s\!vko'M  
    Worst offenders: Bdepvc}[#  
    Type                      Value      Criterion        Change #+k[[; 0  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ![^h<Om  
    TSTY   2             0.20000000     0.35349910    -0.19053324 {Z.@-Tl_  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 Am4(WXVQ  
    TSTX   2             0.20000000     0.35349910    -0.19053324 +r_[Tj|Er  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 7d)' y  
    TSTY   1             0.20000000     0.42678383    -0.11724851 {[ *_HAy7  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 zK?[dO  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ]E^f8s0#V  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 DA~ELje^j  
    TSTY   3             0.20000000     0.42861670    -0.11541563 y@_?3m7B=  
    wP"|$HN  
    Estimated Performance Changes based upon Root-Sum-Square method: >oDP(]YGg  
    Nominal MTF                 :     0.54403234 k^jCB>b  
    Estimated change            :    -0.36299231 'bPo 5V|  
    Estimated MTF               :     0.18104003 k)Wz b  
    ^j}sS!p  
    Compensator Statistics: wgrO W]e  
    Change in back focus: G|_aU8b|t  
    Minimum            :        -0.000000 3~rc=e  
    Maximum            :         0.000000 #jiqRhm  
    Mean               :        -0.000000 )A=g# D#  
    Standard Deviation :         0.000000 +9CUnRv  
    q(^J7M)  
    Monte Carlo Analysis: f@L{*Upj+  
    Number of trials: 20 ts>}>}@vc  
    vy2aNUmt  
    Initial Statistics: Normal Distribution \l5:A]J  
    =lQ[%&  
      Trial       Criterion        Change I xBO$ 2  
          1     0.42804416    -0.11598818 8f5^@K\c  
    Change in Focus                :      -0.400171 DjvgKy=Jr_  
          2     0.54384387    -0.00018847 I=a$1%BzEX  
    Change in Focus                :       1.018470 # HYkzjb  
          3     0.44510003    -0.09893230 :j4 [_9\  
    Change in Focus                :      -0.601922 HYmXPpse  
          4     0.18154684    -0.36248550 );H[lKy  
    Change in Focus                :       0.920681 kZ%W?#  
          5     0.28665820    -0.25737414 \;gt&*$-  
    Change in Focus                :       1.253875 *PU,Rc()6  
          6     0.21263372    -0.33139862 Z]\^.x9S  
    Change in Focus                :      -0.903878 NI:N W-!  
          7     0.40051424    -0.14351809 %=y3  
    Change in Focus                :      -1.354815 Z"Ni Y  
          8     0.48754161    -0.05649072 #)}bUNc'  
    Change in Focus                :       0.215922 m]q!y3  
          9     0.40357468    -0.14045766 2tm-:CPG  
    Change in Focus                :       0.281783 'PYqp&gJ  
         10     0.26315315    -0.28087919 N\p]+[6  
    Change in Focus                :      -1.048393 v=-3 ,C  
         11     0.26120585    -0.28282649 ,s&~U<Z  
    Change in Focus                :       1.017611 Uy|=A7Ad c  
         12     0.24033815    -0.30369419 -wMW@:M_  
    Change in Focus                :      -0.109292 [ {LnE:  
         13     0.37164046    -0.17239188  j)6B^!  
    Change in Focus                :      -0.692430 PGl-2Cr  
         14     0.48597489    -0.05805744 ER1mA:8>E  
    Change in Focus                :      -0.662040 [;YBX] t  
         15     0.21462327    -0.32940907 vaJXX  
    Change in Focus                :       1.611296 )0MshgM  
         16     0.43378226    -0.11025008 chzR4"WZFt  
    Change in Focus                :      -0.640081 {bqKb=nyZ  
         17     0.39321881    -0.15081353 Go7hDmu  
    Change in Focus                :       0.914906 +J8/,d  
         18     0.20692530    -0.33710703 $!C+i"q$  
    Change in Focus                :       0.801607 _k.bGYldk  
         19     0.51374068    -0.03029165 r ;8z"*  
    Change in Focus                :       0.947293 h!CX`pBM  
         20     0.38013374    -0.16389860 )Hm[j)YI  
    Change in Focus                :       0.667010 : ";D.{||  
    b7sE  
    Number of traceable Monte Carlo files generated: 20 vD9D:vK  
    w?W e|x3  
    Nominal     0.54403234 f,inQ2f}d  
    Best        0.54384387    Trial     2 aW-o=l@;  
    Worst       0.18154684    Trial     4 f.)F8!!  
    Mean        0.35770970 | 8Egw-f  
    Std Dev     0.11156454 15o *r  
    - zw{<+;  
    pQ(eF0KG  
    Compensator Statistics: 7P^{*!  
    Change in back focus: @EOR] ^?!]  
    Minimum            :        -1.354815 e0WSHg=6@  
    Maximum            :         1.611296 q}v04Yy,o  
    Mean               :         0.161872 x$ J.SbW  
    Standard Deviation :         0.869664 L(2P|{C  
    #IGoz|m  
    90% >       0.20977951               T_tDpq_|  
    80% >       0.22748071               X+E\]X2  
    50% >       0.38667627               Bd~cY/M  
    20% >       0.46553746               rspoSPnY1  
    10% >       0.50064115                3_*Xk. .d  
    & Yf#O*  
    End of Run. \i;&@Kp.N  
    0mD;.1:  
    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 ~73i^3yf  
    0 ij~e<  
    hN:F8r+DG  
    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 jw(> @SXz  
    (GcKaUg8*  
    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                 ^?s~Fk_V  
    80% >       0.22748071                 2l)9Lz=;L  
    50% >       0.38667627                 $vTAF-~Ql  
    20% >       0.46553746                 W`Q$t56  
    10% >       0.50064115 Kl aZZJ  
    .A*VLF*m  
    最后这个数值是MTF值呢，还是MTF的公差？ NlF0\+h  
    6@?aVM~  
    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？？？   kBy rhK5U  
    +=6RmId+X  
    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  : <y@,3DD3A9  
    90% >       0.20977951                 M{`/f@z(  
    80% >       0.22748071                 3iE-6udCS  
    50% >       0.38667627                 t"<s}~  
    20% >       0.46553746                 3@^MvoC  
    10% >       0.50064115 ;i<$7MR.e  
    ....... fCgBH~w,9  
    i 8l./Yt/  
    wYZT D*A2h  
    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   B?+ .2  
    Mode                : Sensitivities e# t3u_  
    Sampling            : 2 M'kVL0p?vN  
    Nominal Criterion   : 0.54403234 l^.K'Q1~a  
    Test Wavelength     : 0.6328 ^NXcLEaP*<  
    ujU=JlJ7dl  
    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？ eqq`TT#Z  
    @}WNKS&m  
    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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