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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 re)7h$f}  
    9U4 D$M  
    ,}:}"cl  
    5q;c=oRUj  
    然后添加了默认公差分析，基本没变 -x VZm8y  
    h7kn >q;  
    Y&j'2!g  
    VVw5)O1'  
    然后运行分析的结果如下： vyvb-oz;u  
    +n>p"+c  
    Analysis of Tolerances L_Xbca=  
    v|R#[vtFd  
    File : E:\光学设计资料\zemax练习\f500.ZMX |)y-EBZe\"  
    Title: &Lbh?C  
    Date : TUE JUN 21 2011 rtdEIk  
    gE9x+g  
    Units are Millimeters. jct'B}@X(  
    All changes are computed using linear differences. t\WU}aKML  
    )4R[C={  
    Paraxial Focus compensation only. :?j]W2+kR  
    9I[k3  
    WARNING: Solves should be removed prior to tolerancing. fXSuJ<G  
    .aQ8I1~  
    Mnemonics: *Ksk1T+>  
    TFRN: Tolerance on curvature in fringes. c"diNbm[  
    TTHI: Tolerance on thickness. v, !`A!{D  
    TSDX: Tolerance on surface decentering in x. ](^FGz  
    TSDY: Tolerance on surface decentering in y. YQ>O6:%  
    TSTX: Tolerance on surface tilt in x (degrees). ^fj30gw7\5  
    TSTY: Tolerance on surface tilt in y (degrees). a$3] `  
    TIRR: Tolerance on irregularity (fringes). aMJJ|iiU  
    TIND: Tolerance on Nd index of refraction. E(_lm&,4+  
    TEDX: Tolerance on element decentering in x. >c$3@$  
    TEDY: Tolerance on element decentering in y. @D$ogU,#  
    TETX: Tolerance on element tilt in x (degrees). OHv4Yy]$B  
    TETY: Tolerance on element tilt in y (degrees). 30YH}b#B  
    AquO#A[,#  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. \olY)b[  
    SB`xr!~A]  
    WARNING: Boundary constraints on compensators will be ignored. p_i',5H(  
    gnadx52FP  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm L]q%;u]8!  
    Mode                : Sensitivities %<|cWYM="z  
    Sampling            : 2 #~4;yY\$I  
    Nominal Criterion   : 0.54403234 RG9iTA'  
    Test Wavelength     : 0.6328 sB!6"D5  
    y!T8(  
    'Hsd7Dpi}  
    Fields: XY Symmetric Angle in degrees qIxe)+.  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY o$#q/L  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 yQ !keGj  
    vDyGxU!#\  
    Sensitivity Analysis: ,/"0tP&_;  
    Mp(;PbVD  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------|  +F~B"a  
    Type                      Value      Criterion        Change          Value      Criterion        Change 3 bT?4  
    Fringe tolerance on surface 1 S{Zf}8?6$  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 )d>Dcne  
    Change in Focus                :      -0.000000                            0.000000 ==S^IBG  
    Fringe tolerance on surface 2  tYG6Gl  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 !DD4Bqez  
    Change in Focus                :       0.000000                            0.000000 `O!yt  
    Fringe tolerance on surface 3 `Ue5;<K-/  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 g>g*1oS  
    Change in Focus                :      -0.000000                            0.000000 UgD)O:xaU  
    Thickness tolerance on surface 1 yH9&HFDp  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 $wbIe"|  
    Change in Focus                :       0.000000                            0.000000 5lyHg{iqD  
    Thickness tolerance on surface 2 wRZS+^hx  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 /]of @  
    Change in Focus                :       0.000000                           -0.000000 u $B24Cy.  
    Decenter X tolerance on surfaces 1 through 3 xEv?2n@A  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 a`zHx3Yg  
    Change in Focus                :       0.000000                            0.000000 eIOMW9Ivt  
    Decenter Y tolerance on surfaces 1 through 3 $W9dUR0  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 C}ASVywc,1  
    Change in Focus                :       0.000000                            0.000000 z /nW; ow  
    Tilt X tolerance on surfaces 1 through 3 (degrees) |E;+j\   
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 30<_`  
    Change in Focus                :       0.000000                            0.000000 6!8uZ>u%Vg  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ""m/?TZq'  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ,t!I%r  
    Change in Focus                :       0.000000                            0.000000 Oc-ia)v1G  
    Decenter X tolerance on surface 1 oi8M6l  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Ua4P@#cU  
    Change in Focus                :       0.000000                            0.000000 E= .clA  
    Decenter Y tolerance on surface 1 L* ScSxw  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 .HRd6O;  
    Change in Focus                :       0.000000                            0.000000 e7tio!  
    Tilt X tolerance on surface (degrees) 1 "1`w>(=  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 D&pp <  
    Change in Focus                :       0.000000                            0.000000 .KtK<Ps[S  
    Tilt Y tolerance on surface (degrees) 1 I:0dz:T7*  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 k5 *Z@a  
    Change in Focus                :       0.000000                            0.000000 2`> (LH  
    Decenter X tolerance on surface 2 Sj IDzNI5  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 jUDE)~h  
    Change in Focus                :       0.000000                            0.000000 qIB2eCXw  
    Decenter Y tolerance on surface 2 c[$i )\0  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 =dmxE*C  
    Change in Focus                :       0.000000                            0.000000 MO|Pv j~[  
    Tilt X tolerance on surface (degrees) 2 r%>EiHpCU  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 N`qGwNT%G  
    Change in Focus                :       0.000000                            0.000000 x![G'I  
    Tilt Y tolerance on surface (degrees) 2 m)]|mYjju  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 F%4N/e'L  
    Change in Focus                :       0.000000                            0.000000 xk3)#*  
    Decenter X tolerance on surface 3 Vt-V'`Y  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 }:[MSUm5  
    Change in Focus                :       0.000000                            0.000000 "!uS!BI?  
    Decenter Y tolerance on surface 3 >FJK$>[1:p  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 +n)bWB%  
    Change in Focus                :       0.000000                            0.000000 SR`A]EC(V  
    Tilt X tolerance on surface (degrees) 3 rrq7UJ;  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 a&dP@)  
    Change in Focus                :       0.000000                            0.000000 /||8j.Tm  
    Tilt Y tolerance on surface (degrees) 3 c8HETs1  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 qD /h/  
    Change in Focus                :       0.000000                            0.000000 *~w?@,}  
    Irregularity of surface 1 in fringes OAEa+V  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 prB:E[1  
    Change in Focus                :       0.000000                            0.000000 Xn5LrLM&  
    Irregularity of surface 2 in fringes 7HL23Vr k  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 1_StgFu u  
    Change in Focus                :       0.000000                            0.000000 2vddx<&  
    Irregularity of surface 3 in fringes 5HTY ~&C  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Z=< D`  
    Change in Focus                :       0.000000                            0.000000 G^SDB!/@J  
    Index tolerance on surface 1 1v<uA9A%[  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 2z1r|?l  
    Change in Focus                :       0.000000                            0.000000 r5+ MjR  
    Index tolerance on surface 2 tf1Y5P$  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Q8]S6,pt  
    Change in Focus                :       0.000000                           -0.000000 f9hH{ ( A  
    |/Y!R>El  
    Worst offenders: iR8;^C.aT  
    Type                      Value      Criterion        Change Q8h=2YL  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ie7TO{W  
    TSTY   2             0.20000000     0.35349910    -0.19053324 y5Fgf3P@ju  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 7t78=wpLc  
    TSTX   2             0.20000000     0.35349910    -0.19053324 g91xUG  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 Zc*#LsQh.`  
    TSTY   1             0.20000000     0.42678383    -0.11724851 U.<ad  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 $N|Spp0  
    TSTX   1             0.20000000     0.42678383    -0.11724851 RER93:(  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ?}jjBJ&  
    TSTY   3             0.20000000     0.42861670    -0.11541563 EJJ&`,q  
    }/g1  
    Estimated Performance Changes based upon Root-Sum-Square method: Hl8\*#;C&>  
    Nominal MTF                 :     0.54403234 5"+;}E|q  
    Estimated change            :    -0.36299231 Bma.Uln  
    Estimated MTF               :     0.18104003 v{8r46Y~Z)  
    s8k4e6ak  
    Compensator Statistics: k_Lv\'Ok  
    Change in back focus: eO{2rV45O  
    Minimum            :        -0.000000 `[x'EJp#  
    Maximum            :         0.000000 [.;8GMW  
    Mean               :        -0.000000 L_!}R  
    Standard Deviation :         0.000000 n.o_._mu2  
    _cJ\A0h^  
    Monte Carlo Analysis: t3!~=U  
    Number of trials: 20 ("=24R=a  
    18y'#<X!  
    Initial Statistics: Normal Distribution ^a#W|-:  
    -or)NE  
      Trial       Criterion        Change 'ztY>KVj  
          1     0.42804416    -0.11598818 8Z 0@-8vi  
    Change in Focus                :      -0.400171 ;3Q3!+%j  
          2     0.54384387    -0.00018847 *4l6+#W  
    Change in Focus                :       1.018470 T\Jm=+]c!  
          3     0.44510003    -0.09893230 PW9tZx#  
    Change in Focus                :      -0.601922 AO8%!+"_  
          4     0.18154684    -0.36248550 \JNWL yw  
    Change in Focus                :       0.920681 'jKCAU5/0;  
          5     0.28665820    -0.25737414 2V$YZSw6q  
    Change in Focus                :       1.253875 cOP%R_ak?  
          6     0.21263372    -0.33139862 1#2L9Bi  
    Change in Focus                :      -0.903878 8=mx5Gwz-  
          7     0.40051424    -0.14351809 l585L3i  
    Change in Focus                :      -1.354815 xB}B1H%  
          8     0.48754161    -0.05649072 cn'r BY  
    Change in Focus                :       0.215922 *C^TCyBK;  
          9     0.40357468    -0.14045766 hr g'Z5n  
    Change in Focus                :       0.281783 X u>]$+u#  
         10     0.26315315    -0.28087919 gyC Xv0*z  
    Change in Focus                :      -1.048393 |(9l_e|  
         11     0.26120585    -0.28282649 SqoO"(1x  
    Change in Focus                :       1.017611 "}uV=y  
         12     0.24033815    -0.30369419 o7yvXrpG(U  
    Change in Focus                :      -0.109292 P_M!h~  
         13     0.37164046    -0.17239188 ) =|8%IrB  
    Change in Focus                :      -0.692430 @%6"xnb `  
         14     0.48597489    -0.05805744 |1/?>=dDm  
    Change in Focus                :      -0.662040 O{=@c96rl  
         15     0.21462327    -0.32940907 ~B`H5#  
    Change in Focus                :       1.611296 Lx3`.F\mG  
         16     0.43378226    -0.11025008 7#9fcfL  
    Change in Focus                :      -0.640081 '^.3}N{Fo  
         17     0.39321881    -0.15081353 "GAKi}y">v  
    Change in Focus                :       0.914906 g<i>252>  
         18     0.20692530    -0.33710703 i6E~]&~.v  
    Change in Focus                :       0.801607 1xU)nXXb  
         19     0.51374068    -0.03029165 4o( Q+6m  
    Change in Focus                :       0.947293 x|3G}[=  
         20     0.38013374    -0.16389860 $XrX(l5  
    Change in Focus                :       0.667010 B)Dsen  
    N\x<'P4q  
    Number of traceable Monte Carlo files generated: 20 {CGk9g" `  
    CrX1qyR  
    Nominal     0.54403234 q}J Eesf  
    Best        0.54384387    Trial     2 p1,.f&(f  
    Worst       0.18154684    Trial     4 Oi~.z@@  
    Mean        0.35770970  37|EG  
    Std Dev     0.11156454 R78lV -};Q  
    N!13QI H  
    2%j"E{J&  
    Compensator Statistics: Bv}nG|  
    Change in back focus: 8*(|uX  
    Minimum            :        -1.354815 F=$U.K~1?  
    Maximum            :         1.611296 Dfd%Z;Yu  
    Mean               :         0.161872 MNKY J  
    Standard Deviation :         0.869664 e]smnf  
    3 n1 > +8  
    90% >       0.20977951               V"|j Dnn5  
    80% >       0.22748071               <GoZ>  
    50% >       0.38667627               nkz^^q`5l7  
    20% >       0.46553746               m?`$NJST  
    10% >       0.50064115                p 4lB#  
    a8Z{-=)  
    End of Run. D;X/7 p|>  
    uq@_DPA7  
    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 '_o(I  
    o>\epQt~/p  
    Gv 6#LcF#  
    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 hu-6V="^9  
    O)}5`0@L  
    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                 0o-KjX?kP  
    80% >       0.22748071                 W= $, \D+  
    50% >       0.38667627                 +[$ Q C*  
    20% >       0.46553746                 @ykM98K  
    10% >       0.50064115 ]"4\]_?r  
    @(LEuYq}  
    最后这个数值是MTF值呢，还是MTF的公差？ ^Euqy,8}  
    +`Ypc  
    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？？？   L:RMZp*bK  
    p*" H&xA@  
    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  : DYKJVn7w  
    90% >       0.20977951                 \E3e vU  
    80% >       0.22748071                 "=97:H{!  
    50% >       0.38667627                 o<r|YRzQl  
    20% >       0.46553746                 WfDpeXdO  
    10% >       0.50064115 ZW0gd7Wh  
    ....... * vMNv  
    3A(sT}  
    42wa9UL<Ka  
    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   (ugB3o  
    Mode                : Sensitivities c[~LI<>ic  
    Sampling            : 2 }Ra'`;D$  
    Nominal Criterion   : 0.54403234 &(] @L\A  
    Test Wavelength     : 0.6328 dMnJ)R  
    y,D4b6  
    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？ Gqz<;y  
    =D2jJk?AX  
    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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