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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 fab'\|Y   
    "6B7EH  
    g^AQBF  
    %TB(E<p`  
    然后添加了默认公差分析,基本没变 K\Ea\b[  
    (]|h6aI'}  
    64s;EC  
    &m5zd$6  
    然后运行分析的结果如下: E5k)~P`|  
    o/5-T4  
    Analysis of Tolerances O'y8q[2KE  
    18X@0e  
    File : E:\光学设计资料\zemax练习\f500.ZMX v}B%:1P4  
    Title: S;|:ci<[=  
    Date : TUE JUN 21 2011 vQAFgG  
    ^h(wi`i  
    Units are Millimeters. !l:GrT8J  
    All changes are computed using linear differences. e+ xQ\LH  
    $|K d<wv  
    Paraxial Focus compensation only. l$42MRi/  
    9U8M|W|d  
    WARNING: Solves should be removed prior to tolerancing. yI0bSu<j-  
    9t`;~)o  
    Mnemonics: .tBlGMcN  
    TFRN: Tolerance on curvature in fringes. jL VJ+mu  
    TTHI: Tolerance on thickness. >I5:@6 Z  
    TSDX: Tolerance on surface decentering in x. [$N_YcN?  
    TSDY: Tolerance on surface decentering in y. aSL`yuXu  
    TSTX: Tolerance on surface tilt in x (degrees). Q$jEmmm%V[  
    TSTY: Tolerance on surface tilt in y (degrees). aZfMeW  
    TIRR: Tolerance on irregularity (fringes). _;lw,;ftA  
    TIND: Tolerance on Nd index of refraction. Oy6fl'FIt  
    TEDX: Tolerance on element decentering in x. / 3A6xPOg  
    TEDY: Tolerance on element decentering in y. v4$/LUJZp  
    TETX: Tolerance on element tilt in x (degrees). @6u/)>rI  
    TETY: Tolerance on element tilt in y (degrees). kaG/8G(  
    mU'<:gL+  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. h ><Sp*z_V  
    LPk@t^[  
    WARNING: Boundary constraints on compensators will be ignored. TP }a9-9?  
    36d nS>4  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 4S_ -9&z  
    Mode                : Sensitivities 8tY>%A~^z  
    Sampling            : 2 @AyteHK  
    Nominal Criterion   : 0.54403234 a#oROb-*~  
    Test Wavelength     : 0.6328 |s8N  
    &|v)   
    4{VO:(geZ  
    Fields: XY Symmetric Angle in degrees >{#JIG.  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY .RD<]BxJ  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 4l D$'`  
    (In{GA7 ;  
    Sensitivity Analysis: z;OYPGvkw  
    tgRj8 @  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| j=\h|^gA  
    Type                      Value      Criterion        Change          Value      Criterion        Change B(Sy.n  
    Fringe tolerance on surface 1 %X}ZX|{O  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 $d?+\r:I{,  
    Change in Focus                :      -0.000000                            0.000000 G0FzXtu)q  
    Fringe tolerance on surface 2 BK$y>= `  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 j3-YZKpg  
    Change in Focus                :       0.000000                            0.000000 +UzQJt/>>  
    Fringe tolerance on surface 3 Q>niJ'7WF  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 i'~-\F!  
    Change in Focus                :      -0.000000                            0.000000 $|4@Zx4vf  
    Thickness tolerance on surface 1 86&M Zdv6  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 !_I1=yi  
    Change in Focus                :       0.000000                            0.000000 (vXr2Z<l  
    Thickness tolerance on surface 2 EF/d7  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 UG| /Px ]  
    Change in Focus                :       0.000000                           -0.000000 PKm|?kn{0(  
    Decenter X tolerance on surfaces 1 through 3 W.wPy@yi  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 q0sf\|'<}  
    Change in Focus                :       0.000000                            0.000000 8}/DD^M  
    Decenter Y tolerance on surfaces 1 through 3 Vk5Z[w a  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 #w$Y1bjn  
    Change in Focus                :       0.000000                            0.000000 ;(Yb9Mr)z  
    Tilt X tolerance on surfaces 1 through 3 (degrees) A40DbD\^ad  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 o3WOp80hz  
    Change in Focus                :       0.000000                            0.000000 bM W|:rn  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) RTtKf i}  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "N4^ ^~s  
    Change in Focus                :       0.000000                            0.000000 yOM/UdWq  
    Decenter X tolerance on surface 1 yD[d%w  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 c:Ua\$)u3,  
    Change in Focus                :       0.000000                            0.000000 +qi& ?}  
    Decenter Y tolerance on surface 1 g[xoS\d  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 kk4 |4  
    Change in Focus                :       0.000000                            0.000000 ucCf%T\:  
    Tilt X tolerance on surface (degrees) 1 t}t(fJHY`  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 %VHy?!/  
    Change in Focus                :       0.000000                            0.000000 4&)sROjV=  
    Tilt Y tolerance on surface (degrees) 1 '|yxB')  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Bfb~<rs[  
    Change in Focus                :       0.000000                            0.000000 }U]jy  
    Decenter X tolerance on surface 2 ,05PYBc3  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 c r=Q39{  
    Change in Focus                :       0.000000                            0.000000 =vThtl/azD  
    Decenter Y tolerance on surface 2 MGdzrcF  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 K)SWM3r  
    Change in Focus                :       0.000000                            0.000000 I| TNo-!$  
    Tilt X tolerance on surface (degrees) 2 r[9m-#)>  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 J"gMm@#C4  
    Change in Focus                :       0.000000                            0.000000 !$)reaS  
    Tilt Y tolerance on surface (degrees) 2 .ARYCTyG  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 bW yimr&B  
    Change in Focus                :       0.000000                            0.000000 "O$bq::(]e  
    Decenter X tolerance on surface 3 [8ZDMe  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 q` S ~w  
    Change in Focus                :       0.000000                            0.000000 $v>q'8d  
    Decenter Y tolerance on surface 3 5SFr E`  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 xj5TnE9^  
    Change in Focus                :       0.000000                            0.000000 ^sv|m"  
    Tilt X tolerance on surface (degrees) 3 xU'z>y4V$  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 \p!UY 3'  
    Change in Focus                :       0.000000                            0.000000 FgdnX2s J  
    Tilt Y tolerance on surface (degrees) 3 \p^V~fy7rU  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 5:PS74/  
    Change in Focus                :       0.000000                            0.000000 s,R:D).  
    Irregularity of surface 1 in fringes u%-]-:c  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 *qpFt Bg  
    Change in Focus                :       0.000000                            0.000000 n"iS[uj,  
    Irregularity of surface 2 in fringes #p+iwW-  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 N^ +q^iW  
    Change in Focus                :       0.000000                            0.000000 C-pR$WM:HN  
    Irregularity of surface 3 in fringes ~[H8R|j "  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 7i5B=y7b  
    Change in Focus                :       0.000000                            0.000000 5(~Lr3v0  
    Index tolerance on surface 1 XtCIUC{r,  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 (bm^R-SbB  
    Change in Focus                :       0.000000                            0.000000 Zo UeLU  
    Index tolerance on surface 2 SIK:0>yK"  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 eKLvBa-{@  
    Change in Focus                :       0.000000                           -0.000000 xMbgBx4+  
    4!sK>l!  
    Worst offenders: ~+.=  
    Type                      Value      Criterion        Change w4fKh  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 D5gj*/"  
    TSTY   2             0.20000000     0.35349910    -0.19053324 o Mz{j:  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 [ G 9Pb)  
    TSTX   2             0.20000000     0.35349910    -0.19053324 2poo@]M/  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 f@}> :x  
    TSTY   1             0.20000000     0.42678383    -0.11724851 81nD:]7  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 [aSuEu?mC  
    TSTX   1             0.20000000     0.42678383    -0.11724851 9]Jv >_W*  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ?}`- ?JB1  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ^%!{qAp}Z  
    !B`z|#  
    Estimated Performance Changes based upon Root-Sum-Square method: NV5qF/<M  
    Nominal MTF                 :     0.54403234 /? %V% n  
    Estimated change            :    -0.36299231 sOqFEvzo1%  
    Estimated MTF               :     0.18104003 9!Av sC9  
    ~d7t\S  
    Compensator Statistics: Y" =8wNbr  
    Change in back focus: [IHo ~   
    Minimum            :        -0.000000 v4e4,Nt  
    Maximum            :         0.000000 `BmnXWMgx  
    Mean               :        -0.000000 6UCF w>  
    Standard Deviation :         0.000000 `E|i8M3g  
    1$RJzHS  
    Monte Carlo Analysis: &~2m@X(o  
    Number of trials: 20 :E}y Pcw  
    !<TkX/O  
    Initial Statistics: Normal Distribution ]x)!Kd2>  
    !h1:AW_iz  
      Trial       Criterion        Change "U^m~N9k{  
          1     0.42804416    -0.11598818 rp\`uj*D  
    Change in Focus                :      -0.400171 ]R Ah['u|  
          2     0.54384387    -0.00018847 `M~R4lr  
    Change in Focus                :       1.018470 g$]WKy(D  
          3     0.44510003    -0.09893230 s(py7{ ^K  
    Change in Focus                :      -0.601922 )bM,>x  
          4     0.18154684    -0.36248550 p2Khfl6-  
    Change in Focus                :       0.920681 Muwlehuq  
          5     0.28665820    -0.25737414 4T3Z9KD!8  
    Change in Focus                :       1.253875 yKhI&  
          6     0.21263372    -0.33139862 1j<uFhi>  
    Change in Focus                :      -0.903878 {m!5IR  
          7     0.40051424    -0.14351809 u xyj6(  
    Change in Focus                :      -1.354815 j-d&4,a:c  
          8     0.48754161    -0.05649072 e?XFtIj$  
    Change in Focus                :       0.215922 e6MBy\*n  
          9     0.40357468    -0.14045766 .Wt3|?\=nd  
    Change in Focus                :       0.281783 U[MeK)*  
         10     0.26315315    -0.28087919 %|JiFDjp  
    Change in Focus                :      -1.048393 Sm<*TH!\n_  
         11     0.26120585    -0.28282649 =4`wYh  
    Change in Focus                :       1.017611 7j)ky2r#  
         12     0.24033815    -0.30369419 JPn)Op6  
    Change in Focus                :      -0.109292 U;/2\Ii  
         13     0.37164046    -0.17239188 3E wdu  
    Change in Focus                :      -0.692430 F.U@8lr  
         14     0.48597489    -0.05805744 |Uics:cQC  
    Change in Focus                :      -0.662040 .K84"Gdx  
         15     0.21462327    -0.32940907 T1qbb*  
    Change in Focus                :       1.611296 s! 2[zJ19p  
         16     0.43378226    -0.11025008 I;Mm+5A  
    Change in Focus                :      -0.640081 |&"aZ!Kn  
         17     0.39321881    -0.15081353 \dCGu~bT  
    Change in Focus                :       0.914906 vyDxX  
         18     0.20692530    -0.33710703 |K_%]1*riC  
    Change in Focus                :       0.801607 i{m!v6j:  
         19     0.51374068    -0.03029165 ?o[h$7` o6  
    Change in Focus                :       0.947293 |dQz(z&6{5  
         20     0.38013374    -0.16389860 m"rht:v5  
    Change in Focus                :       0.667010 yZ{yzv'D&  
    oi|N8a2R  
    Number of traceable Monte Carlo files generated: 20 PwW$=M{\.  
    !#pc@(rE  
    Nominal     0.54403234 2$Xof  
    Best        0.54384387    Trial     2 C jf<,x$  
    Worst       0.18154684    Trial     4 7Tk//By7  
    Mean        0.35770970 9;Z{++z  
    Std Dev     0.11156454 MlYm\x8{M  
    F(n<:TvlK  
    Hrpz4E%\Aw  
    Compensator Statistics: +r'&6Me!  
    Change in back focus: b 9rQQS  
    Minimum            :        -1.354815 |;NfH|43;  
    Maximum            :         1.611296 2Snb+,o2  
    Mean               :         0.161872 Jy/< {7j  
    Standard Deviation :         0.869664 @*|VWHR  
    9V1d`]tP  
    90% >       0.20977951                nBp6uNK[  
    80% >       0.22748071               @=l6zd@  
    50% >       0.38667627               ]fzXrN_  
    20% >       0.46553746               "<+~uz  
    10% >       0.50064115                s8&q8r7%  
    N#Rb8&G)b  
    End of Run. !b_(|~7Lc  
    !*Is0``  
    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 #M|lBYdW}  
    4ams~  
    ;Tr,BfV|Bf  
    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 D(ItNMc Ku  
    <c[\\ :Hh*  
    不吝赐教
     
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    离线sansummer
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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?
    离线sansummer
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 H9)n<r  
    80% >       0.22748071                 I;NW!"pU  
    50% >       0.38667627                 IWu=z!mO  
    20% >       0.46553746                 53{\H&q  
    10% >       0.50064115 N\*oL*[j  
    I`{*QU  
    最后这个数值是MTF值呢,还是MTF的公差? {WV"]O8IV  
    $ 6mShp9(  
    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???   +]cf/_8+s  
    *|Vf1R]  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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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  : h>!h|Ma  
    90% >       0.20977951                 V]--d33/a  
    80% >       0.22748071                 0J'^<G TL  
    50% >       0.38667627                 ?<t?G  
    20% >       0.46553746                 5/P. 4<c7  
    10% >       0.50064115 ]~]TZb  
    ....... F'[Y.tA ,#  
    #9TL5-1y  
    (nLzWvN  
    这些数值都是MTF值
    离线天地大同
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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   uSXnf  
    Mode                : Sensitivities EFDmNud`Q  
    Sampling            : 2  cRK Lyb  
    Nominal Criterion   : 0.54403234 ?a,#p  
    Test Wavelength     : 0.6328 &V axv$v}  
    vWmt<E|e  
    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? ASEKP(]v  
    GTbV5{Ss  
    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?
    离线天地大同
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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