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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 e XmYw^n  
    ,qhv(  
    > !HC ?  
    S_Vquw(+  
    然后添加了默认公差分析，基本没变 p+{*w7?8"[  
    {7=k/Y*U  
    ,Ne v7X[0  
    eBW]hwhKzM  
    然后运行分析的结果如下： BFn}~\wzK  
    utw@5  
    Analysis of Tolerances `]<~lf  
    "C+Fl /v  
    File : E:\光学设计资料\zemax练习\f500.ZMX D&8*4>  
    Title: \0l"9 B.  
    Date : TUE JUN 21 2011 uL@'Hv A  
    M]e _@:!  
    Units are Millimeters. ;] #Q!  
    All changes are computed using linear differences. AdRt\H<  
    et}s yPH  
    Paraxial Focus compensation only. f=40_5a6  
    VHU,G+ms  
    WARNING: Solves should be removed prior to tolerancing. pB,@<\l %  
    YZp]vlm~  
    Mnemonics: ivi&;  
    TFRN: Tolerance on curvature in fringes. hfQ^C6yR  
    TTHI: Tolerance on thickness. O[&G6+  
    TSDX: Tolerance on surface decentering in x. fOO[`"'Pq  
    TSDY: Tolerance on surface decentering in y. 1Q9e S&  
    TSTX: Tolerance on surface tilt in x (degrees). =[^_x+x hE  
    TSTY: Tolerance on surface tilt in y (degrees). fkr; a`<W  
    TIRR: Tolerance on irregularity (fringes). FDRpK 5cw  
    TIND: Tolerance on Nd index of refraction. {7o|*M  
    TEDX: Tolerance on element decentering in x. dp>LhTLc  
    TEDY: Tolerance on element decentering in y. Jm G)=$,  
    TETX: Tolerance on element tilt in x (degrees). +JL"Z4b@R}  
    TETY: Tolerance on element tilt in y (degrees). n15lX,FI  
    ,vUMy&AV  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. qL68/7:A  
    Z9 tjo1X  
    WARNING: Boundary constraints on compensators will be ignored. XAc#ywophi  
    `=~d^wKYJ3  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 'q=Ly?9  
    Mode                : Sensitivities (g]J hG  
    Sampling            : 2 \~ h7  
    Nominal Criterion   : 0.54403234 v#`P?B\  
    Test Wavelength     : 0.6328 g\ p;  
    To19=,:  
    |Xl,~-.  
    Fields: XY Symmetric Angle in degrees DvvjIYB~  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY |(a< b  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 P(za8l>  
    20H$9M=}  
    Sensitivity Analysis: \)vxZ!  
    lTpmoDa%  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| c)fTI,.$  
    Type                      Value      Criterion        Change          Value      Criterion        Change #x|h@(y|  
    Fringe tolerance on surface 1 I- X|-  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 !B{N:?r  
    Change in Focus                :      -0.000000                            0.000000 *.9.BD9  
    Fringe tolerance on surface 2 "J%/xj  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 hUy\)GsT  
    Change in Focus                :       0.000000                            0.000000 I 0}+}{M:  
    Fringe tolerance on surface 3 =-dk@s  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 rz%=qY  
    Change in Focus                :      -0.000000                            0.000000 &Q"Ox{~W  
    Thickness tolerance on surface 1 Jm8#M z  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 C.$`HGv  
    Change in Focus                :       0.000000                            0.000000 )/F1,&/N`e  
    Thickness tolerance on surface 2 &Rx-zp&dJ  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 +9mnxU>  
    Change in Focus                :       0.000000                           -0.000000 /a$RJ6t&3  
    Decenter X tolerance on surfaces 1 through 3 )0JXUC e  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 'WG%O7s.  
    Change in Focus                :       0.000000                            0.000000 skn`Q>a  
    Decenter Y tolerance on surfaces 1 through 3 9RoN,e8!  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 g2WDa'{L  
    Change in Focus                :       0.000000                            0.000000 D-BWgK  
    Tilt X tolerance on surfaces 1 through 3 (degrees)  w|>O!]K]  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "p~1| ?T  
    Change in Focus                :       0.000000                            0.000000 *gC6yQ2?  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) czf|c  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Svo gvn  
    Change in Focus                :       0.000000                            0.000000 {uRnZ/m  
    Decenter X tolerance on surface 1 AtN=G"c>_  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671  %Ln7{w  
    Change in Focus                :       0.000000                            0.000000 iS^IqS  
    Decenter Y tolerance on surface 1 5h^U ]Y#  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 FU|c[u|z  
    Change in Focus                :       0.000000                            0.000000 KN;b+`x;M  
    Tilt X tolerance on surface (degrees) 1 PXk+Vi,%k  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 {%5tqF  
    Change in Focus                :       0.000000                            0.000000 1wl8  
    Tilt Y tolerance on surface (degrees) 1 WX} "Pj/6  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ~)#JwY  
    Change in Focus                :       0.000000                            0.000000 6t|FuTC  
    Decenter X tolerance on surface 2 YN ~ 7nOw  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 &41=YnC6  
    Change in Focus                :       0.000000                            0.000000 V Z[[zYe  
    Decenter Y tolerance on surface 2 E+AEV`-  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 N6Fj} m&E  
    Change in Focus                :       0.000000                            0.000000 MmBM\Dnv  
    Tilt X tolerance on surface (degrees) 2 U<**Est  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 \5$N> 2kO  
    Change in Focus                :       0.000000                            0.000000 )A a98Eu?2  
    Tilt Y tolerance on surface (degrees) 2 O1Gd_wDC/i  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 m Kwhd} V  
    Change in Focus                :       0.000000                            0.000000 x)wIGo  
    Decenter X tolerance on surface 3 z./M^7v?  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 UDHk@M  
    Change in Focus                :       0.000000                            0.000000 h1Ca9Z_  
    Decenter Y tolerance on surface 3 =j 6amk-  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 6|m1z  
    Change in Focus                :       0.000000                            0.000000 -Rhxib|<  
    Tilt X tolerance on surface (degrees) 3 n`T 4aDm  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 iKa}@U  
    Change in Focus                :       0.000000                            0.000000 SeBbI&Ju  
    Tilt Y tolerance on surface (degrees) 3 <L@0w8i`  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Rx*T7*xg{  
    Change in Focus                :       0.000000                            0.000000 SI3ek9|XU  
    Irregularity of surface 1 in fringes zPU& }7  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 W?!(/`J]  
    Change in Focus                :       0.000000                            0.000000 g6$X {  
    Irregularity of surface 2 in fringes S=^yJ6 xJ  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 E27wxMU  
    Change in Focus                :       0.000000                            0.000000 3uCC_Am  
    Irregularity of surface 3 in fringes iLn)Z0<\o  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 JY#IeNL  
    Change in Focus                :       0.000000                            0.000000 6pI =?g  
    Index tolerance on surface 1 L@w|2  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ;"\e aKl  
    Change in Focus                :       0.000000                            0.000000 w-R>g dm  
    Index tolerance on surface 2 'MPt K  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ^q@.yL  
    Change in Focus                :       0.000000                           -0.000000 EXg\a#4['  
    X%xX3e'  
    Worst offenders: {Q?AIp6u|  
    Type                      Value      Criterion        Change 5UR$Pn2a2  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 <0vQHND,3  
    TSTY   2             0.20000000     0.35349910    -0.19053324 [a\:K2*'  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 EkM?Rs  
    TSTX   2             0.20000000     0.35349910    -0.19053324 <wxI>T}b  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 4aGV1u+4  
    TSTY   1             0.20000000     0.42678383    -0.11724851 0]{h,W3]@[  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 oJR0sbikP  
    TSTX   1             0.20000000     0.42678383    -0.11724851 s2iR  }<  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 qr$=oCqa  
    TSTY   3             0.20000000     0.42861670    -0.11541563 Z:09 ]r1  
    m>$+sMZE  
    Estimated Performance Changes based upon Root-Sum-Square method: KP[ax2!x  
    Nominal MTF                 :     0.54403234 ~qLbyzHaB  
    Estimated change            :    -0.36299231 vL{~?vq6  
    Estimated MTF               :     0.18104003 D|,d_W  
    xZjD(e'  
    Compensator Statistics: -<sn+-uE:  
    Change in back focus: f GE+DjeA  
    Minimum            :        -0.000000 EYd`qk 3  
    Maximum            :         0.000000 ^6mlE+WY  
    Mean               :        -0.000000 aG8}R~wH&  
    Standard Deviation :         0.000000 }]N7CWy  
    tfvX0J  
    Monte Carlo Analysis: y'xB? >|  
    Number of trials: 20 3 zp)!QJi  
    Y<X%'Wd\  
    Initial Statistics: Normal Distribution xvQJTR k  
    1j# ~:=I  
      Trial       Criterion        Change K& <|94_k  
          1     0.42804416    -0.11598818 abuHu'73  
    Change in Focus                :      -0.400171 yJc<;Qx  
          2     0.54384387    -0.00018847 mfQQ<Q@  
    Change in Focus                :       1.018470 %YM4x!6  
          3     0.44510003    -0.09893230 6*gMG3  
    Change in Focus                :      -0.601922 "2}04b|"  
          4     0.18154684    -0.36248550 rJ]iJ0[I  
    Change in Focus                :       0.920681 1bF aQ50t  
          5     0.28665820    -0.25737414 [Pi8gj*  
    Change in Focus                :       1.253875 5Az=)q4Q  
          6     0.21263372    -0.33139862 @>B#2t&  
    Change in Focus                :      -0.903878 D)8&v` L S  
          7     0.40051424    -0.14351809 .%<oy"_  
    Change in Focus                :      -1.354815 $)vljM<<  
          8     0.48754161    -0.05649072 F:x" RbbF  
    Change in Focus                :       0.215922 SfyZ,0  
          9     0.40357468    -0.14045766 }H!c9Y  
    Change in Focus                :       0.281783 $SRpFz5y$  
         10     0.26315315    -0.28087919 hf^,  
    Change in Focus                :      -1.048393 Bjq1za  
         11     0.26120585    -0.28282649 ?P ,z^  
    Change in Focus                :       1.017611 T|Sz~nO}f  
         12     0.24033815    -0.30369419 b/5?)!I  
    Change in Focus                :      -0.109292 Ovv~ymj  
         13     0.37164046    -0.17239188 e3"GC_*#  
    Change in Focus                :      -0.692430 Oj\lg2Ck  
         14     0.48597489    -0.05805744 q|b#=Af]g  
    Change in Focus                :      -0.662040 QUVwO m  
         15     0.21462327    -0.32940907 [0El z@.C  
    Change in Focus                :       1.611296 M9HM:  
         16     0.43378226    -0.11025008 !fZ\GOx  
    Change in Focus                :      -0.640081 U8-#W(tRR  
         17     0.39321881    -0.15081353 *?Nrx=O*  
    Change in Focus                :       0.914906 CO%7^}xSE,  
         18     0.20692530    -0.33710703 K>l$Y#x}k  
    Change in Focus                :       0.801607 8s-y+M@.  
         19     0.51374068    -0.03029165 E'j>[C:U  
    Change in Focus                :       0.947293 rE;*MqYt&  
         20     0.38013374    -0.16389860 )."_i64  
    Change in Focus                :       0.667010 NE,2jeZQ.  
    ?>cx; "xF  
    Number of traceable Monte Carlo files generated: 20 Hgu$)yhlj  
    ST5L O#5  
    Nominal     0.54403234 x :\+{-  
    Best        0.54384387    Trial     2 &YGd!Q  
    Worst       0.18154684    Trial     4 G|Rsj{2'  
    Mean        0.35770970 z85%2Apd  
    Std Dev     0.11156454 m~'!  
    KV9'ew+M  
    #(F/P!qk  
    Compensator Statistics: ,Md8A`7x~  
    Change in back focus: _VGAh:v  
    Minimum            :        -1.354815 m_zl*s*6  
    Maximum            :         1.611296 B>rz<bPT  
    Mean               :         0.161872 f(:+JH<P~  
    Standard Deviation :         0.869664  QMLz  
    FkY}6  
    90% >       0.20977951               DDQ}&`s  
    80% >       0.22748071               Atc9[<~WG  
    50% >       0.38667627               XLb lVi@  
    20% >       0.46553746               ~~a,Fyko2  
    10% >       0.50064115                `ltc)$  
    S[J eW  
    End of Run. #%O|P&rA  
     (-Cxv`7  
    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}$uP5M8q  
    4&X D  
    %c"PMTq(  
    是大于0.6左右的，难道我按照这个默认的公差来加工的话，只有10%的才可能大于0.5？那太低了啊，请问这该怎么进行进一步处理。或者之前哪有问题 ?g^42IYG  
    `|coA2$rw  
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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                 ~,ZU+  
    80% >       0.22748071                 Z$ ?(~ln  
    50% >       0.38667627                 '41'Gn  
    20% >       0.46553746                 aeZ$Wu>]W  
    10% >       0.50064115 YI+ clh;%9  
    "&Hr)yyWG  
    最后这个数值是MTF值呢，还是MTF的公差？ (4o<U%3kGq  
    riR(CJ}Ff  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   +YZ*>ki  
    E{;F4wT_@  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : zuu<;^/R  
    90% >       0.20977951                 br^ A<@,d  
    80% >       0.22748071                 7Db}bDU1 |  
    50% >       0.38667627                 ,<N{Y[n]e  
    20% >       0.46553746                 uNkJe  
    10% >       0.50064115 "OwK-  
    ....... IyI0|&r2A  
    Bn9#F#F<  
    O\CnKNk,  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   d<+hQ\BF,  
    Mode                : Sensitivities PtYG%/s  
    Sampling            : 2 Y)DAR83  
    Nominal Criterion   : 0.54403234 }K8e(i6z  
    Test Wavelength     : 0.6328 HCsd$M;Hbv  
    y>.t[*zT  
    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？ 5@%.wb4  
    A+!,{G  
    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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