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    [讨论]公差分析结果的疑问 [复制链接]

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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 ooa>~!91P  
    S0+nQM%  
     Qx,jUL#2  
    Zr`pOUk!4  
    然后添加了默认公差分析，基本没变 {L 7O{:J  
    :BFecS&i5  
    afEhC0j  
    {MK.jw9/  
    然后运行分析的结果如下： fba QXM  
    W| S{v7[l  
    Analysis of Tolerances ^Y"c1f2  
    cnfjO g'\{  
    File : E:\光学设计资料\zemax练习\f500.ZMX 8:V:^`KaSs  
    Title: 5x";}Vp>P  
    Date : TUE JUN 21 2011 -:w+`x?XaB  
    mouLjT&p  
    Units are Millimeters. OmO/x  
    All changes are computed using linear differences. *^]Hqf(`  
    bnS"@^M  
    Paraxial Focus compensation only. E;7vGGf]  
    uH'n.d"WG  
    WARNING: Solves should be removed prior to tolerancing. f>d aK9$(  
    sBozz#  
    Mnemonics: ~Dsz9  f  
    TFRN: Tolerance on curvature in fringes. gc|?$aE  
    TTHI: Tolerance on thickness. +m Plid\  
    TSDX: Tolerance on surface decentering in x. 4 \*!]5i  
    TSDY: Tolerance on surface decentering in y. `/en&l  
    TSTX: Tolerance on surface tilt in x (degrees). Y_qRW. k  
    TSTY: Tolerance on surface tilt in y (degrees). WJ)( *1  
    TIRR: Tolerance on irregularity (fringes). a`XXz  
    TIND: Tolerance on Nd index of refraction. >U/ m/H'  
    TEDX: Tolerance on element decentering in x. /(#;(]  
    TEDY: Tolerance on element decentering in y. 1an?/j,  
    TETX: Tolerance on element tilt in x (degrees). %J`cYn#  
    TETY: Tolerance on element tilt in y (degrees). ,1-n=eTQ  
    ]F:5-[V#  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. nSWW^ ;  
    d^5OB8t  
    WARNING: Boundary constraints on compensators will be ignored. [gK (x%  
    c#l W ?  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm $2l<X KT-  
    Mode                : Sensitivities i}C9  
    Sampling            : 2 @I{v  
    Nominal Criterion   : 0.54403234 FGzMbi<l#(  
    Test Wavelength     : 0.6328 S%ULGX:@ga  
    7]}n 0*fe  
    I7!+~uX  
    Fields: XY Symmetric Angle in degrees 1k&**!S]%  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY }:NE  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 N 2|?I(\B  
    R2uekpP  
    Sensitivity Analysis: d51.Tbt#%7  
    ^{L/) Xy5  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| sdkKvo. y0  
    Type                      Value      Criterion        Change          Value      Criterion        Change PGTi-o}  
    Fringe tolerance on surface 1 }Yd7<"kp  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 Jb. V4  
    Change in Focus                :      -0.000000                            0.000000 DIx!Sw7EC  
    Fringe tolerance on surface 2 l ;TWs_N  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 <pAN{:  
    Change in Focus                :       0.000000                            0.000000 xO2e>[W  
    Fringe tolerance on surface 3 F' eV%g  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 &PJ&XTR  
    Change in Focus                :      -0.000000                            0.000000 !`j}%!K!  
    Thickness tolerance on surface 1 ;| (_;d  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 |etA2"r&  
    Change in Focus                :       0.000000                            0.000000 ZH]n&%@j  
    Thickness tolerance on surface 2 ]xhZJ~"@u  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 EJF*_<f9O  
    Change in Focus                :       0.000000                           -0.000000 v(uYso_  
    Decenter X tolerance on surfaces 1 through 3 v[S>   
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 _T,X z_  
    Change in Focus                :       0.000000                            0.000000 O3Jp:.ps  
    Decenter Y tolerance on surfaces 1 through 3 \F_~?$  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 eC+S'Jgf  
    Change in Focus                :       0.000000                            0.000000 x8L$T (^  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ][Ne;F6  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 TL%2?'G  
    Change in Focus                :       0.000000                            0.000000 I)@b#V=  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) zCOzBL/1q  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 5v&mK 5zZ  
    Change in Focus                :       0.000000                            0.000000 1: cD\  
    Decenter X tolerance on surface 1 NWK+.{s>m  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Q};g~b3  
    Change in Focus                :       0.000000                            0.000000 IhIPy~Hgt  
    Decenter Y tolerance on surface 1 a>1_|QB.  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ^SdorPOq&  
    Change in Focus                :       0.000000                            0.000000 0taopDi ;d  
    Tilt X tolerance on surface (degrees) 1 VK7lm|J+  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 #dcfQ  
    Change in Focus                :       0.000000                            0.000000 La$*)qD,  
    Tilt Y tolerance on surface (degrees) 1 (`z`ni  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Xi^#F;@sU  
    Change in Focus                :       0.000000                            0.000000 58T<~u7  
    Decenter X tolerance on surface 2 eVDO]5?  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 C_c*21X  
    Change in Focus                :       0.000000                            0.000000 9d4Agj M  
    Decenter Y tolerance on surface 2 -b?yzg, 8  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Yv}V =O%  
    Change in Focus                :       0.000000                            0.000000 ryk(Am<  
    Tilt X tolerance on surface (degrees) 2 6xLLIby,  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 I/F3%'O  
    Change in Focus                :       0.000000                            0.000000 Oy> V/  
    Tilt Y tolerance on surface (degrees) 2 XeGtge/}T  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 h]|E,!H  
    Change in Focus                :       0.000000                            0.000000 y$J M=f$  
    Decenter X tolerance on surface 3 bf9LR1  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 _z`g@[m:t  
    Change in Focus                :       0.000000                            0.000000 BQ\o?={  
    Decenter Y tolerance on surface 3 /hx|KC&:e  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ]yvHb)X  
    Change in Focus                :       0.000000                            0.000000 ,!m][  
    Tilt X tolerance on surface (degrees) 3 *3,Kn}ik  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 p3sR>ToJ  
    Change in Focus                :       0.000000                            0.000000 p>GTFXEi6  
    Tilt Y tolerance on surface (degrees) 3 Vh%=JL sK  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 K6C@YY(  
    Change in Focus                :       0.000000                            0.000000 \NIj&euF  
    Irregularity of surface 1 in fringes +\@) 1  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 8efQ -^b.  
    Change in Focus                :       0.000000                            0.000000 //[zUn  
    Irregularity of surface 2 in fringes 9&FFp*'3  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 bZf18lvij:  
    Change in Focus                :       0.000000                            0.000000 yXuc< m  
    Irregularity of surface 3 in fringes x<mHTh:-V  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ;rD M%S@  
    Change in Focus                :       0.000000                            0.000000 Stw%OP@?  
    Index tolerance on surface 1 !!jitFHzb  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 )Ha`>  
    Change in Focus                :       0.000000                            0.000000 h3}gg@Fm  
    Index tolerance on surface 2 `i'72\(  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 L?W F[nF R  
    Change in Focus                :       0.000000                           -0.000000 u{Z 4M3U  
    -F7GUB6B  
    Worst offenders: %fv;C  
    Type                      Value      Criterion        Change O.ce"5Y^  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 =vqy5y  
    TSTY   2             0.20000000     0.35349910    -0.19053324 9|;"+jlt  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 x4r=ENO)q  
    TSTX   2             0.20000000     0.35349910    -0.19053324 |oYqkP|  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 e@Cv')]B  
    TSTY   1             0.20000000     0.42678383    -0.11724851 _8-iO.T+2  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 R:Pw@  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Y? 1 3_~ K  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 2HxT+|~d6  
    TSTY   3             0.20000000     0.42861670    -0.11541563 |zJxR_)  
    }D/O cp~o  
    Estimated Performance Changes based upon Root-Sum-Square method: \.@fAgv  
    Nominal MTF                 :     0.54403234 ;q8tOvQ  
    Estimated change            :    -0.36299231 G`a,(<kT;  
    Estimated MTF               :     0.18104003 W .B>"u  
    P|:*OM p  
    Compensator Statistics: \R m2c8Z2  
    Change in back focus: /b44;U`v5-  
    Minimum            :        -0.000000 nBVR)|+M  
    Maximum            :         0.000000  D8w:c6b  
    Mean               :        -0.000000 & o2F4  
    Standard Deviation :         0.000000 F5*NK!U  
    b1("(,r/`  
    Monte Carlo Analysis: y([""z3<w  
    Number of trials: 20 3!+N} [$iy  
    a\UhOPFF  
    Initial Statistics: Normal Distribution li U=&wM>  
    vf |lF9@U  
      Trial       Criterion        Change \Mi] !b|8  
          1     0.42804416    -0.11598818 ~If{`zWoC  
    Change in Focus                :      -0.400171 0:,8Ce  
          2     0.54384387    -0.00018847 W7j-siWJ  
    Change in Focus                :       1.018470 jJX-S  
          3     0.44510003    -0.09893230 h1 y6`m9  
    Change in Focus                :      -0.601922 jK!Y-  
          4     0.18154684    -0.36248550 c`hj^t  
    Change in Focus                :       0.920681 r35'U#VMk?  
          5     0.28665820    -0.25737414 zW,Nv>Ac5  
    Change in Focus                :       1.253875 (Wj2%*NT  
          6     0.21263372    -0.33139862 &ye,A(4  
    Change in Focus                :      -0.903878 FqvMi:F  
          7     0.40051424    -0.14351809 GN7\p)  
    Change in Focus                :      -1.354815 vlHE\%{  
          8     0.48754161    -0.05649072 s+=JT+g  
    Change in Focus                :       0.215922 ZL0':7  
          9     0.40357468    -0.14045766 \z/_vzz4  
    Change in Focus                :       0.281783 (>E}{{>2r  
         10     0.26315315    -0.28087919 7 Q`'1oE?  
    Change in Focus                :      -1.048393 __FhuP P  
         11     0.26120585    -0.28282649 \:ELO[(#|{  
    Change in Focus                :       1.017611 FY^#%0~  
         12     0.24033815    -0.30369419 +cDz`)N,,  
    Change in Focus                :      -0.109292 S.!0~KR: U  
         13     0.37164046    -0.17239188 .^?^QH3  
    Change in Focus                :      -0.692430 cH5@Jam  
         14     0.48597489    -0.05805744 $'9b,- e  
    Change in Focus                :      -0.662040 nA!Xb'y&  
         15     0.21462327    -0.32940907 c|kQ3(  
    Change in Focus                :       1.611296 'G.^g}N1  
         16     0.43378226    -0.11025008 ;+) M~2 =  
    Change in Focus                :      -0.640081 Gk.;<d  
         17     0.39321881    -0.15081353 F(-1m A&-  
    Change in Focus                :       0.914906 Xv`c@n )  
         18     0.20692530    -0.33710703 !'-|]xx(  
    Change in Focus                :       0.801607 &HPzm6.3  
         19     0.51374068    -0.03029165 m4U7{sE  
    Change in Focus                :       0.947293 CoZXbTq  
         20     0.38013374    -0.16389860 7_AR()CM  
    Change in Focus                :       0.667010 =,*4:TU  
     N+<`Er  
    Number of traceable Monte Carlo files generated: 20  Ji>  
    DwQa j"1<%  
    Nominal     0.54403234 [vIHYp  
    Best        0.54384387    Trial     2 K?y!zy  
    Worst       0.18154684    Trial     4 HuX{8nl a  
    Mean        0.35770970 Rwy<#9R[x  
    Std Dev     0.11156454 |_Y[93 1<  
    JG2)-x;9  
    U9om}WKO  
    Compensator Statistics: jY]hMQ/H  
    Change in back focus: WHV]H  
    Minimum            :        -1.354815 Hkc:B/6  
    Maximum            :         1.611296 VW7 ?{EL7  
    Mean               :         0.161872 *mqoyOa  
    Standard Deviation :         0.869664 QU&b5!;&  
    Jy,Dcl  
    90% >       0.20977951               zH0{S.3 k  
    80% >       0.22748071               ]"Do%<  
    50% >       0.38667627               x?ajTzMv  
    20% >       0.46553746               aB`x5vg7ho  
    10% >       0.50064115                Vx]{<}(gr  
    }tH$/-qnJE  
    End of Run. {y{& tz Z  
    xK`.^W  
    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 a\wpJ|3{=T  
    39W"G7n?v  
    zU+` o?al  
    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 qlT'gUt=H  
    [qHLo>HaL  
    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                 yNk9KK)  
    80% >       0.22748071                 M(,npW  
    50% >       0.38667627                 Z/ "jLfP  
    20% >       0.46553746                 Qrt[MJ+#  
    10% >       0.50064115 p]d3F^*i  
    R3]Ra&h6N)  
    最后这个数值是MTF值呢，还是MTF的公差？ LoHL}1BG-  
    M1Jnn4w*d  
    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？？？   q%u;+/|l  
    iJg3`1@j  
    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  : CUOxx,V  
    90% >       0.20977951                 d;KrV=%30s  
    80% >       0.22748071                 RaFk/mSw  
    50% >       0.38667627                 aTC7H]e  
    20% >       0.46553746                 =4 &/Pr  
    10% >       0.50064115 _s./^B_w!  
    ....... |2!/<%Yr`  
    jp2AU,Cl  
    )J+vmY~&  
    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   VmrW\rH@  
    Mode                : Sensitivities DUiqt09`~  
    Sampling            : 2 9PEjV$0E2  
    Nominal Criterion   : 0.54403234 fRJSo%  
    Test Wavelength     : 0.6328 }' `2C$  
    [Dp6q~RM  
    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？ rWF~a ec  
    b #|M-DmT  
    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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