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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 F#Oqa^$(  
    |_%|  
    H>`?S{J  
    59p'Ega.  
    然后添加了默认公差分析，基本没变 a$FELlMv  
    -[x^z5Ee`  
    R{+ Rvk  
    ;/SM^&Y  
    然后运行分析的结果如下： /"Om-DK%  
    1z$;>+g<  
    Analysis of Tolerances {JzX`Z30l  
    z$`=7 afp  
    File : E:\光学设计资料\zemax练习\f500.ZMX ~-6Kl3Y  
    Title: 6pQ#Zg()vp  
    Date : TUE JUN 21 2011 o_EXbS]C  
    |]]Xee]  
    Units are Millimeters. >\$qF  
    All changes are computed using linear differences. abCcZ<=|b  
    w=3@IW  
    Paraxial Focus compensation only. h&5H`CR[  
    NwuME/C7#  
    WARNING: Solves should be removed prior to tolerancing. Om{[ <tL  
    Ps.O.2Z5ZB  
    Mnemonics: +?(2-RBd  
    TFRN: Tolerance on curvature in fringes. q=}Lm;r  
    TTHI: Tolerance on thickness. 3U@ p  
    TSDX: Tolerance on surface decentering in x. }O@S ;[v S  
    TSDY: Tolerance on surface decentering in y. M&y!w   
    TSTX: Tolerance on surface tilt in x (degrees). o 1#XM/Z  
    TSTY: Tolerance on surface tilt in y (degrees). ^Y ~ ,s  
    TIRR: Tolerance on irregularity (fringes). F1)Q#ThF\  
    TIND: Tolerance on Nd index of refraction. Ab-S*| B  
    TEDX: Tolerance on element decentering in x. 7vcYI#(2 Y  
    TEDY: Tolerance on element decentering in y. )AqM?FE4R  
    TETX: Tolerance on element tilt in x (degrees). ,ibI@8;#~'  
    TETY: Tolerance on element tilt in y (degrees). g^ ^%4Y  
    #v')iR"  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Yq#I# 2RD  
    i,FG?\x@  
    WARNING: Boundary constraints on compensators will be ignored. $ah, $B  
    }` Q'!_`  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Nj.(iBmr  
    Mode                : Sensitivities V@8 4Cb  
    Sampling            : 2 ,u{d@U^)3@  
    Nominal Criterion   : 0.54403234 [={pF q`  
    Test Wavelength     : 0.6328 WMZa6cH  
    >;HbD p  
    Q]w;o&eo  
    Fields: XY Symmetric Angle in degrees {mw,U[C  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ~DPg):cZ  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 eP'e_E  
    p2!x8`IB*  
    Sensitivity Analysis: ~VUNN[  
    \"_;rJ{!aE  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| |>A1J:  
    Type                      Value      Criterion        Change          Value      Criterion        Change }%y_Lc L  
    Fringe tolerance on surface 1 f&ZxG,]H i  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 1 xiq]~H  
    Change in Focus                :      -0.000000                            0.000000 h^~eTi;c]Q  
    Fringe tolerance on surface 2 A T+|}B!  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 H4KwbTT"+  
    Change in Focus                :       0.000000                            0.000000 _xAdvr' W  
    Fringe tolerance on surface 3 8:$kFy\A'  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 7u!R 'D  
    Change in Focus                :      -0.000000                            0.000000 |vTirZP  
    Thickness tolerance on surface 1 *0l^/jqn:  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 {;Mcor3  
    Change in Focus                :       0.000000                            0.000000 Z=R>7~H  
    Thickness tolerance on surface 2 15 uVvp/  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 jLD=EJ  
    Change in Focus                :       0.000000                           -0.000000 y$*Tbzp  
    Decenter X tolerance on surfaces 1 through 3 z.]t_`KuF9  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ]Vl * !,(i  
    Change in Focus                :       0.000000                            0.000000 0$}+tq+  
    Decenter Y tolerance on surfaces 1 through 3 Kdx?s;i  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ECg/ge2  
    Change in Focus                :       0.000000                            0.000000 4'Vuhqk  
    Tilt X tolerance on surfaces 1 through 3 (degrees) _9#4  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 z:RwCd1\  
    Change in Focus                :       0.000000                            0.000000 g}$]K! F  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ?*4&Z.~J  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 k2<VUeW5  
    Change in Focus                :       0.000000                            0.000000 )f(#Fn  
    Decenter X tolerance on surface 1 n9t8RcJS:  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 lx U}HM  
    Change in Focus                :       0.000000                            0.000000 Cg}cD.  
    Decenter Y tolerance on surface 1 0RYh4'=F  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 <|hvH  
    Change in Focus                :       0.000000                            0.000000 WSi Utf|g  
    Tilt X tolerance on surface (degrees) 1 lp!@uoN^T  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 T9RR. ng  
    Change in Focus                :       0.000000                            0.000000 '"~|L>F%G  
    Tilt Y tolerance on surface (degrees) 1 *@cXBav/<  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 bzk@6jR1  
    Change in Focus                :       0.000000                            0.000000 %OfaBv&  
    Decenter X tolerance on surface 2 2B=yT8  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 %Ni)^   
    Change in Focus                :       0.000000                            0.000000 ]#j]yGV  
    Decenter Y tolerance on surface 2 *1ku2e]z  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 2P!Pbl<  
    Change in Focus                :       0.000000                            0.000000 f@[q# }6  
    Tilt X tolerance on surface (degrees) 2 *;Hvx32I  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Ga.a"\F.V  
    Change in Focus                :       0.000000                            0.000000 Ls5|4%+&  
    Tilt Y tolerance on surface (degrees) 2 4 FGcCE3  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 MHI0>QsI  
    Change in Focus                :       0.000000                            0.000000 yGZb  
    Decenter X tolerance on surface 3 y*vs}G'W  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 iKLN !QR  
    Change in Focus                :       0.000000                            0.000000 P3on4c  
    Decenter Y tolerance on surface 3 eMPi ho  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 k~`pV/6  
    Change in Focus                :       0.000000                            0.000000 T.`EDluG  
    Tilt X tolerance on surface (degrees) 3 9{'GrL  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 *]W{83rXQ  
    Change in Focus                :       0.000000                            0.000000 l yF~E  
    Tilt Y tolerance on surface (degrees) 3 \n6#D7OV  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 >y(;k|-$  
    Change in Focus                :       0.000000                            0.000000 flVQG@  
    Irregularity of surface 1 in fringes n0>#?ek12  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 @4sv(HyDY  
    Change in Focus                :       0.000000                            0.000000 owmV7E1  
    Irregularity of surface 2 in fringes +a"MSPC4w  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 A=I]1r  
    Change in Focus                :       0.000000                            0.000000 1bYc^(z0  
    Irregularity of surface 3 in fringes ['tGc{4  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Cc$!TZq=  
    Change in Focus                :       0.000000                            0.000000 ? Z.p.v  
    Index tolerance on surface 1 kHo0I8  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 QO[!  
    Change in Focus                :       0.000000                            0.000000 eL0U5>#  
    Index tolerance on surface 2 GXYmJ4wR  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 c/^} =t(  
    Change in Focus                :       0.000000                           -0.000000 L1VUfEG-  
    Rd&2mL  
    Worst offenders: qTj7mUk  
    Type                      Value      Criterion        Change PL@hsZty~c  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ;8'hvc3i$  
    TSTY   2             0.20000000     0.35349910    -0.19053324 !0zbWB9  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 GXr9J rs.e  
    TSTX   2             0.20000000     0.35349910    -0.19053324 plh.-"   
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ?k TVC  
    TSTY   1             0.20000000     0.42678383    -0.11724851 z4HIDb  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 "|{ NRIE  
    TSTX   1             0.20000000     0.42678383    -0.11724851 FWq+'Gk SV  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 /a [i:Oa#  
    TSTY   3             0.20000000     0.42861670    -0.11541563 4`I2tr  
    s+#gH@c  
    Estimated Performance Changes based upon Root-Sum-Square method: Xx~OZ^t&Vn  
    Nominal MTF                 :     0.54403234 n!2"pRIi  
    Estimated change            :    -0.36299231 yS[:C 2v  
    Estimated MTF               :     0.18104003 B: \\aOEj  
    xdFm-_\-  
    Compensator Statistics: s )POtJ<  
    Change in back focus: Ynl^Z  
    Minimum            :        -0.000000 ^ |z|kc  
    Maximum            :         0.000000 !g  #  
    Mean               :        -0.000000 aHNR0L3$}{  
    Standard Deviation :         0.000000 j1Fy'os"!  
    r{!]` '8  
    Monte Carlo Analysis: ]JVs/  
    Number of trials: 20 '- oS=OrZ  
    ,)TtI~6Q  
    Initial Statistics: Normal Distribution lr'h  
    Se.\wkl#Y  
      Trial       Criterion        Change k |k  
          1     0.42804416    -0.11598818 |`+kZ-M*  
    Change in Focus                :      -0.400171 )r3}9J  
          2     0.54384387    -0.00018847 4nK\gXz19  
    Change in Focus                :       1.018470 ,m;S-Im_Xr  
          3     0.44510003    -0.09893230 IppzQ0'=y1  
    Change in Focus                :      -0.601922 }TY}sr  
          4     0.18154684    -0.36248550 L.ScC  
    Change in Focus                :       0.920681 ~b}a|K  
          5     0.28665820    -0.25737414 hiq7e*Nsb  
    Change in Focus                :       1.253875 dw#K!,g  
          6     0.21263372    -0.33139862 `% IzW2v6  
    Change in Focus                :      -0.903878 H .*:+  
          7     0.40051424    -0.14351809 $&& mGD;?K  
    Change in Focus                :      -1.354815 t2skg  
          8     0.48754161    -0.05649072 i8iv{e2  
    Change in Focus                :       0.215922 sU!h^N$  
          9     0.40357468    -0.14045766 q,`"Z)97  
    Change in Focus                :       0.281783 "O{j}QwY  
         10     0.26315315    -0.28087919 ^0)Mc"&{  
    Change in Focus                :      -1.048393 Oxo?\ :T  
         11     0.26120585    -0.28282649 ~QgyhJM_h=  
    Change in Focus                :       1.017611 R % [ZQ K  
         12     0.24033815    -0.30369419 7=i8$v&GX  
    Change in Focus                :      -0.109292 zx` %)r  
         13     0.37164046    -0.17239188 POvxZU  
    Change in Focus                :      -0.692430 -FQ!  
         14     0.48597489    -0.05805744 'D`O4TsP>  
    Change in Focus                :      -0.662040 2-!OflkoM0  
         15     0.21462327    -0.32940907 <7'`N\a  
    Change in Focus                :       1.611296 Geyy!sr``  
         16     0.43378226    -0.11025008 I@Cq<:+(3  
    Change in Focus                :      -0.640081 ~tK4C|  
         17     0.39321881    -0.15081353 $J6Pv   
    Change in Focus                :       0.914906 jf&B5>-x  
         18     0.20692530    -0.33710703 ;iT@41)7  
    Change in Focus                :       0.801607 KaVNRS  
         19     0.51374068    -0.03029165 Vw-,G7v&E  
    Change in Focus                :       0.947293 4'3do>!  
         20     0.38013374    -0.16389860 F.{{gpI  
    Change in Focus                :       0.667010 :rxS &5  
    be?>C 5  
    Number of traceable Monte Carlo files generated: 20 mzw`{Oy>L  
    `+DH@ce  
    Nominal     0.54403234 Lx%*IE|c  
    Best        0.54384387    Trial     2 q4u,pm,@  
    Worst       0.18154684    Trial     4 MWdev.m:Z  
    Mean        0.35770970 R[_Q}W'HG  
    Std Dev     0.11156454 #IJm*_J<  
    CD^C}MB  
    I=aoP}_  
    Compensator Statistics: r<'ni  
    Change in back focus: -M]B;[^  
    Minimum            :        -1.354815 J?6.yL;  
    Maximum            :         1.611296 Xir ERc.e  
    Mean               :         0.161872 9S 'u 1%  
    Standard Deviation :         0.869664 /q| r!+  
    1Vf?Rw  
    90% >       0.20977951               /80H.|8O  
    80% >       0.22748071               m(>MP/  
    50% >       0.38667627               $4>(}  
    20% >       0.46553746               1O#]qZS}]  
    10% >       0.50064115                SjosbdD  
    vCvjb\S  
    End of Run. S?b^g'5m  
    ^aG$9N<\  
    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 [8C|v61Y  
    )Ehi 8  
    o*MiKgQ&  
    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 @%lkRU)  
    j_I[k8z  
    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                  )[S#:PP  
    80% >       0.22748071                 rp '^]Zx  
    50% >       0.38667627                 yk0tA  
    20% >       0.46553746                 ;J@U){R  
    10% >       0.50064115 A"B#t"  
    xfF;u9$;  
    最后这个数值是MTF值呢，还是MTF的公差？ GE8.{P  
    s=e`}4  
    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？？？   m#$$xG  
    9u6VN]divB  
    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  : kS35X)-  
    90% >       0.20977951                 blWtC/!Aq;  
    80% >       0.22748071                 c|d,:u#  
    50% >       0.38667627                 3~Lsa"/  
    20% >       0.46553746                 ,>01Cs=t8  
    10% >       0.50064115 D66NF;7q  
    ....... n=PfV3B  
    H0!$aO  
    F\hVunPVx  
    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   {NQCe0S+p  
    Mode                : Sensitivities R8:5N3Fx  
    Sampling            : 2  VM:|I~gJ  
    Nominal Criterion   : 0.54403234 kMK0|+  
    Test Wavelength     : 0.6328 *`|xa@1v`  
    $_,-ES I  
    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？ Q xA( *1  
    "/RMIS K[;  
    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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