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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 )s M}BY  
    x\lua  
    |b|p0Z%7{  
    ]>!]X*\9  
    然后添加了默认公差分析，基本没变 18~j>fN  
    F$.M2*9  
    6;ICX2Wq'  
    *fl1 =Rfr  
    然后运行分析的结果如下： :wMZ&xERDZ  
    3+IS7ATn  
    Analysis of Tolerances *}FoeDe  
    % L]xar  
    File : E:\光学设计资料\zemax练习\f500.ZMX fZg Z  
    Title: O *CKyW_$t  
    Date : TUE JUN 21 2011 3?C$Tl2G8  
    -)w/nq  
    Units are Millimeters. |>m@]s7Z  
    All changes are computed using linear differences. H}A67J9x  
    !r$/-8b  
    Paraxial Focus compensation only. Ltc>@  
    |3s-BKbN4  
    WARNING: Solves should be removed prior to tolerancing. _T H'v:C  
    iidK}<o  
    Mnemonics: )U5AnL  
    TFRN: Tolerance on curvature in fringes. pDW .Pav  
    TTHI: Tolerance on thickness. VPK)HzPG,  
    TSDX: Tolerance on surface decentering in x. \SyfEcSf2v  
    TSDY: Tolerance on surface decentering in y. m%akx@{WL  
    TSTX: Tolerance on surface tilt in x (degrees). /|Zk$q.\  
    TSTY: Tolerance on surface tilt in y (degrees). pj'Yv  
    TIRR: Tolerance on irregularity (fringes). ofsua?lSe  
    TIND: Tolerance on Nd index of refraction. 4W6gKY  
    TEDX: Tolerance on element decentering in x. *PD7H9m  
    TEDY: Tolerance on element decentering in y. |ML|P\1&V  
    TETX: Tolerance on element tilt in x (degrees). B \BP:;"  
    TETY: Tolerance on element tilt in y (degrees). s %/3X\_  
    +hi!=^b]  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. NU81 V0:jG  
    tMC<\e  
    WARNING: Boundary constraints on compensators will be ignored. }{HlY?S  
    ZfoI7<?33  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm @r=O~x  
    Mode                : Sensitivities MK,#"Ty}zK  
    Sampling            : 2  zoA]7pG-  
    Nominal Criterion   : 0.54403234 iWO16=  
    Test Wavelength     : 0.6328 !M\8k$#"n  
    ZxY%x/K  
    pFhznH{0  
    Fields: XY Symmetric Angle in degrees V4iN2  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY </Ja@%  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 :D;BA  
    Z sv(/>  
    Sensitivity Analysis: r3;?]r.}7  
    6ID@0  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| K '7M\:zy  
    Type                      Value      Criterion        Change          Value      Criterion        Change 0"LJ{:plz  
    Fringe tolerance on surface 1 L~=h?C<  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374  K<6)SL4  
    Change in Focus                :      -0.000000                            0.000000 V-IXtQR  
    Fringe tolerance on surface 2 ]9F$/M#  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 s&TPG0W  
    Change in Focus                :       0.000000                            0.000000 m?0caLw<  
    Fringe tolerance on surface 3 "KSzn  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 h:[%' htz  
    Change in Focus                :      -0.000000                            0.000000 f }P6P>0T  
    Thickness tolerance on surface 1 .7_<0&kW  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 :;HJ3V;  
    Change in Focus                :       0.000000                            0.000000 _ 5n Lrn,~  
    Thickness tolerance on surface 2 M*<Ee]u  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 16Cd0[h?  
    Change in Focus                :       0.000000                           -0.000000 nW1u;.  
    Decenter X tolerance on surfaces 1 through 3 tFn_{fCc>  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 f:bUM/Ud  
    Change in Focus                :       0.000000                            0.000000 [`2V!rU  
    Decenter Y tolerance on surfaces 1 through 3 wF[%+n (*  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ?$J#jhR?  
    Change in Focus                :       0.000000                            0.000000 gw O]U=Y  
    Tilt X tolerance on surfaces 1 through 3 (degrees) sYE|  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 {el,CT#  
    Change in Focus                :       0.000000                            0.000000 n.F^9j+V  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) =^3 Z L  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 G LU7?2`t  
    Change in Focus                :       0.000000                            0.000000 wN Mf-~  
    Decenter X tolerance on surface 1 *sz:c3{_  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 1L3 +KD~  
    Change in Focus                :       0.000000                            0.000000 POB6#x  
    Decenter Y tolerance on surface 1 ~T">)Y~+xI  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 WstX>+?'  
    Change in Focus                :       0.000000                            0.000000 xU9T8Lw  
    Tilt X tolerance on surface (degrees) 1 ;iq H:wO  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 7!F<Uf,V3  
    Change in Focus                :       0.000000                            0.000000 upi\pXv  
    Tilt Y tolerance on surface (degrees) 1 jJbS{1z  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 &65I 6  
    Change in Focus                :       0.000000                            0.000000 JP{Y Q:NF  
    Decenter X tolerance on surface 2 #7v=#Jco  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 h\-3Y U  
    Change in Focus                :       0.000000                            0.000000 pd^"MG  
    Decenter Y tolerance on surface 2 r|av|7R  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 uSQRI9/ir2  
    Change in Focus                :       0.000000                            0.000000 *{<46 0`!q  
    Tilt X tolerance on surface (degrees) 2 vb.}SG>  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 gUGMoXSTI|  
    Change in Focus                :       0.000000                            0.000000 ,)?!p_*@:  
    Tilt Y tolerance on surface (degrees) 2 V10JExsJ  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 <~z@G MQCf  
    Change in Focus                :       0.000000                            0.000000 L5DeLF+  
    Decenter X tolerance on surface 3 N||a0&&  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 jEMnre3/  
    Change in Focus                :       0.000000                            0.000000 2,'~'  
    Decenter Y tolerance on surface 3 me@k~!e"z  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 1 EL#T&  
    Change in Focus                :       0.000000                            0.000000 ?uh%WN6nU]  
    Tilt X tolerance on surface (degrees) 3 ,,8'29yEq  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 U5:5$T,C  
    Change in Focus                :       0.000000                            0.000000 {&TP&_|H  
    Tilt Y tolerance on surface (degrees) 3 YgV"*~  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 hm, H3pN  
    Change in Focus                :       0.000000                            0.000000 __%){j6  
    Irregularity of surface 1 in fringes XcFu:B  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 =I8^E\O("  
    Change in Focus                :       0.000000                            0.000000 'r'+$D7  
    Irregularity of surface 2 in fringes VPvQ]}g6k  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 &iO53I^r/  
    Change in Focus                :       0.000000                            0.000000 6DVHJ+WTV  
    Irregularity of surface 3 in fringes AB+HyZ*//  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 HuLvMYF  
    Change in Focus                :       0.000000                            0.000000 LkyT4HC8n  
    Index tolerance on surface 1 ovk^  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 cC pNF `DN  
    Change in Focus                :       0.000000                            0.000000 "M}3T?0 O  
    Index tolerance on surface 2 Yij_'0vZ  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ;iA$yw:  
    Change in Focus                :       0.000000                           -0.000000 ~P fk   
    ^XT;n  
    Worst offenders: T s9go  
    Type                      Value      Criterion        Change ?>Bt|[p:s)  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 /lLG|aAe  
    TSTY   2             0.20000000     0.35349910    -0.19053324 6 m%/3>q  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 1VA%xOURh  
    TSTX   2             0.20000000     0.35349910    -0.19053324 jO.c>C[?  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 m$`4.>J  
    TSTY   1             0.20000000     0.42678383    -0.11724851 $C t(M)  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 ra F+Bt`  
    TSTX   1             0.20000000     0.42678383    -0.11724851 6m0- he~  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 eIcIl2  
    TSTY   3             0.20000000     0.42861670    -0.11541563 W~& QcSWqD  
    byHXRA)39  
    Estimated Performance Changes based upon Root-Sum-Square method: >p29|TFbV  
    Nominal MTF                 :     0.54403234 xzw2~(lo  
    Estimated change            :    -0.36299231 \7WZFh%:  
    Estimated MTF               :     0.18104003 N)EJP ~0  
    \Icd>>)*  
    Compensator Statistics: UYH&x:WEd  
    Change in back focus: {# N,&?[  
    Minimum            :        -0.000000 Mk/ZEyq^  
    Maximum            :         0.000000 chu r(@Af  
    Mean               :        -0.000000 Q"k #eEA  
    Standard Deviation :         0.000000 w|U 7pUz  
    yK>s]65&  
    Monte Carlo Analysis: Na.)!h_Kn'  
    Number of trials: 20 QV8;c^EZ  
    ejpSbVJ  
    Initial Statistics: Normal Distribution $aY:Z_s  
    _]M :  
      Trial       Criterion        Change 2{01i)2y  
          1     0.42804416    -0.11598818 ,#.9^J  
    Change in Focus                :      -0.400171 iza.' Mm~  
          2     0.54384387    -0.00018847 eY\!}) 5  
    Change in Focus                :       1.018470 o(YF`;OhvS  
          3     0.44510003    -0.09893230 YH3[Jvzf4  
    Change in Focus                :      -0.601922 m88[(l  
          4     0.18154684    -0.36248550 4Y{&y6  
    Change in Focus                :       0.920681 a;v;%rs  
          5     0.28665820    -0.25737414 i%otvDn1  
    Change in Focus                :       1.253875 qb PC5v  
          6     0.21263372    -0.33139862 15cgmZsS  
    Change in Focus                :      -0.903878 -v~XS-F  
          7     0.40051424    -0.14351809 lT+N{[kLt*  
    Change in Focus                :      -1.354815 eR!K8W  
          8     0.48754161    -0.05649072 GE#LcCa  
    Change in Focus                :       0.215922 J1d|L|M  
          9     0.40357468    -0.14045766 ?j$*a7[w  
    Change in Focus                :       0.281783 89fl\18%  
         10     0.26315315    -0.28087919 *cc|(EM  
    Change in Focus                :      -1.048393 nE"0?VNW$  
         11     0.26120585    -0.28282649 W C3b_ia  
    Change in Focus                :       1.017611 oI9-jW  
         12     0.24033815    -0.30369419 &\Yd)#B/  
    Change in Focus                :      -0.109292 x=3+@'  
         13     0.37164046    -0.17239188 ^ =RSoR  
    Change in Focus                :      -0.692430 D,SL_*r{  
         14     0.48597489    -0.05805744 'p4b8:X  
    Change in Focus                :      -0.662040 UpqDGd7M  
         15     0.21462327    -0.32940907 y0 qq7Dmu  
    Change in Focus                :       1.611296 y5:al7*P  
         16     0.43378226    -0.11025008 n$jf($*  
    Change in Focus                :      -0.640081 )}SiM{g  
         17     0.39321881    -0.15081353 *Bx' g| u  
    Change in Focus                :       0.914906 &:Sb$+z  
         18     0.20692530    -0.33710703 jIL$hqo  
    Change in Focus                :       0.801607 ?]2OT5@&s  
         19     0.51374068    -0.03029165 EhHW`  
    Change in Focus                :       0.947293 J!*Pg<  
         20     0.38013374    -0.16389860 WyJXT.  
    Change in Focus                :       0.667010 i ,g<y  
    E3E$_<^  
    Number of traceable Monte Carlo files generated: 20 }$1Aw%p^  
    ?p!+s96  
    Nominal     0.54403234 *,p16"Q;  
    Best        0.54384387    Trial     2 ;@I}eZ,f$  
    Worst       0.18154684    Trial     4 ZUUfn~ORc  
    Mean        0.35770970 QLAyX*%B  
    Std Dev     0.11156454 M ^~  
    T(6B,  
    P%xz"l i  
    Compensator Statistics: >jBnNA@  
    Change in back focus: Jul xFjC  
    Minimum            :        -1.354815 pI{s )|"  
    Maximum            :         1.611296 s*W)BK|+?  
    Mean               :         0.161872 m&Lc."  
    Standard Deviation :         0.869664 dM3V2TT  
    ti9 cfv>  
    90% >       0.20977951               xn)r6  
    80% >       0.22748071               . G ~,h  
    50% >       0.38667627               =Pg u?WU@  
    20% >       0.46553746               #L,5;R{`  
    10% >       0.50064115                d<l-Ldle  
    Y/w) VV  
    End of Run. h\^> s$  
    Zx}.mt#}8  
    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 yy-\$<j  
    me`( J y<  
    =.Q|gZ   
    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 O@bDMg  
    MF^I] 7_  
    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                  G?]E6R  
    80% >       0.22748071                 sy` : wp  
    50% >       0.38667627                 OI.2CF  
    20% >       0.46553746                 <8 At =U  
    10% >       0.50064115 p\8cl/~  
    V|.aud=7z  
    最后这个数值是MTF值呢，还是MTF的公差？  v|Tg %  
    GfU+'k;9  
    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？？？   5@Q4[+5&_  
    %f&(U/  
    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  : ]Hd 0 Y%  
    90% >       0.20977951                 NNl/'ge <\  
    80% >       0.22748071                 zK-hNDFL{  
    50% >       0.38667627                 Jl]]nO BQ/  
    20% >       0.46553746                 <Z m ,q}  
    10% >       0.50064115 }uHc7gTBF7  
    ....... =|U2 }U;  
    Ve8!   
    k@8#Byl|  
    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   4*+EUJ|  
    Mode                : Sensitivities 4o*V12_r'4  
    Sampling            : 2 *(vq-IE\$  
    Nominal Criterion   : 0.54403234 `>sqP aD  
    Test Wavelength     : 0.6328 9#iDrZW  
    42wcpSp  
    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？ J7\q #]?  
    9#(QS+q~  
    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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