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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 [yS#O\$'e  
    fo0+dzazY  
    %$5H!!~o  
    OLC{iD#  
    然后添加了默认公差分析，基本没变 5ZY<JA3  
    {{yZ@>o6  
    Qf$|_&|  
    &--ej|n  
    然后运行分析的结果如下： .6f%?oo  
    Y>+y(ck  
    Analysis of Tolerances jMNU ?m:  
    DA&?e~L&H  
    File : E:\光学设计资料\zemax练习\f500.ZMX XB59Vm0E=  
    Title: Tr0B[QF  
    Date : TUE JUN 21 2011 Iw<i@=V  
    TuDE@ gq(  
    Units are Millimeters. GH1"xR4!  
    All changes are computed using linear differences. W ~f(::  
    &<RpWAk{  
    Paraxial Focus compensation only. kOo~%kcQ'  
    9ZXlR?GA  
    WARNING: Solves should be removed prior to tolerancing. L;Z0`mdz  
    XolZonJr  
    Mnemonics: ={>Lrig:l  
    TFRN: Tolerance on curvature in fringes. X;v$5UKU  
    TTHI: Tolerance on thickness. Vv1|51B  
    TSDX: Tolerance on surface decentering in x.  Q6'x\  
    TSDY: Tolerance on surface decentering in y. 03E4cYxt5  
    TSTX: Tolerance on surface tilt in x (degrees). 9d[5{" 2j  
    TSTY: Tolerance on surface tilt in y (degrees). { FZ=olZ  
    TIRR: Tolerance on irregularity (fringes). rE9I>|tX  
    TIND: Tolerance on Nd index of refraction. !`41q=r  
    TEDX: Tolerance on element decentering in x. ,JU@|`  
    TEDY: Tolerance on element decentering in y. _BdE< !r  
    TETX: Tolerance on element tilt in x (degrees). @c9^q> Uv  
    TETY: Tolerance on element tilt in y (degrees). D^%^xq )E  
    *}k;L74|  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. YW u cvw&  
    p~ HW5\4  
    WARNING: Boundary constraints on compensators will be ignored. ivDGZI9  
    b2b?hA'k  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm h.O$]:N  
    Mode                : Sensitivities JR CrZW}  
    Sampling            : 2 26T"XW'_  
    Nominal Criterion   : 0.54403234 9$`lIy@B  
    Test Wavelength     : 0.6328 +)o}c"P!  
    {:@tQdM:i8  
    >SPh2[f  
    Fields: XY Symmetric Angle in degrees Z87_#5  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY *HEuorl  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 r'QnX;99T  
    {ZY+L;eg1  
    Sensitivity Analysis: L_=3<n E  
    5waKI?4F  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| jck}" N  
    Type                      Value      Criterion        Change          Value      Criterion        Change P(F+f `T  
    Fringe tolerance on surface 1 ,U(1NK8o  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 "Ph^BU Ab  
    Change in Focus                :      -0.000000                            0.000000 _6 ay-u  
    Fringe tolerance on surface 2 a!O0,y  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 @E:,lA  
    Change in Focus                :       0.000000                            0.000000 xhcK~5C  
    Fringe tolerance on surface 3 4Y[1aQ(%  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 0RoU}r@z4  
    Change in Focus                :      -0.000000                            0.000000 giz7{Ai  
    Thickness tolerance on surface 1 EkziAON  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 \hCH>*x<  
    Change in Focus                :       0.000000                            0.000000 [jmd  
    Thickness tolerance on surface 2 q$=#A7H>3)  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 W.kM7z>G  
    Change in Focus                :       0.000000                           -0.000000 -[-wkC8a  
    Decenter X tolerance on surfaces 1 through 3 L|p Z$HB  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 O{ #=d  
    Change in Focus                :       0.000000                            0.000000 n=[/Z!  
    Decenter Y tolerance on surfaces 1 through 3 }iuWAFZbGS  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 iX)%Q  
    Change in Focus                :       0.000000                            0.000000 hdrm!aBd  
    Tilt X tolerance on surfaces 1 through 3 (degrees) R?]02Q  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ynbuN x*  
    Change in Focus                :       0.000000                            0.000000 >y,-v:Vy  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) R=jI?p  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 yj\Nkh  
    Change in Focus                :       0.000000                            0.000000 f k&8]tK4  
    Decenter X tolerance on surface 1 x)@G;nZ  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 A{A\RSZ0  
    Change in Focus                :       0.000000                            0.000000 WYr/oRO  
    Decenter Y tolerance on surface 1 DY`kx2e!  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 wp&=$Aa)'  
    Change in Focus                :       0.000000                            0.000000 soQ1X@"0  
    Tilt X tolerance on surface (degrees) 1 b9l;a+]d  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Y=Kc'x[,Zj  
    Change in Focus                :       0.000000                            0.000000 P?k0zwOlBl  
    Tilt Y tolerance on surface (degrees) 1 `^)jLuyu  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 /{&tY: ;m  
    Change in Focus                :       0.000000                            0.000000 62zYRs\Y)X  
    Decenter X tolerance on surface 2 *6 >.!&  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 mGK|ihYu  
    Change in Focus                :       0.000000                            0.000000 o7$'cn  
    Decenter Y tolerance on surface 2 .nVa[B |.  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 `7r@a  
    Change in Focus                :       0.000000                            0.000000 p9x(D/YP0  
    Tilt X tolerance on surface (degrees) 2 \pVXimam  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 <_-hRbS  
    Change in Focus                :       0.000000                            0.000000 NGbG4-w-  
    Tilt Y tolerance on surface (degrees) 2 | AozR ~  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Ys\Wj%6A  
    Change in Focus                :       0.000000                            0.000000 qHrc9fB  
    Decenter X tolerance on surface 3 tIuCct-  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ):[7E(F=  
    Change in Focus                :       0.000000                            0.000000 32`{7a3!=  
    Decenter Y tolerance on surface 3 ]jo1{IcI  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 IhVO@KJI  
    Change in Focus                :       0.000000                            0.000000 7Mg=b%IYs  
    Tilt X tolerance on surface (degrees) 3 N$U$5;r~`  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 )% ~OH  
    Change in Focus                :       0.000000                            0.000000 : qd`zG3  
    Tilt Y tolerance on surface (degrees) 3 bAx-"Lu  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 >LOjV0K/  
    Change in Focus                :       0.000000                            0.000000 ?j"KV_  
    Irregularity of surface 1 in fringes ^rifRY-,yO  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 4b98Ks Yg  
    Change in Focus                :       0.000000                            0.000000 6">+ ~ G  
    Irregularity of surface 2 in fringes xHD=\,{ig  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 )-a'{W/t  
    Change in Focus                :       0.000000                            0.000000 [PNT\ElT  
    Irregularity of surface 3 in fringes uM_wjP  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 \1^^\G>H5  
    Change in Focus                :       0.000000                            0.000000 I|^;B 8[  
    Index tolerance on surface 1 6\g cFfo  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ;V*l.gr'2  
    Change in Focus                :       0.000000                            0.000000 Ab{ K<:l  
    Index tolerance on surface 2 v|dBSX9k0  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 tMf}   
    Change in Focus                :       0.000000                           -0.000000 RBs-_o+%  
     W\d{a(*  
    Worst offenders: "@iK' c^  
    Type                      Value      Criterion        Change x!5'`A!W%  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ]:XoRyIZ1[  
    TSTY   2             0.20000000     0.35349910    -0.19053324 {zQ8)$CQ  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 M l Jo`d  
    TSTX   2             0.20000000     0.35349910    -0.19053324 '>-gi}z7  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 -zOdU}91Ao  
    TSTY   1             0.20000000     0.42678383    -0.11724851 9]f!'d!5  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 "_-Po^u=r  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Lr$go6s  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 |}BL F  
    TSTY   3             0.20000000     0.42861670    -0.11541563 \LR~r%(rM  
    3@dL /x4A  
    Estimated Performance Changes based upon Root-Sum-Square method:  zv0l,-o  
    Nominal MTF                 :     0.54403234 !dyXJ Q  
    Estimated change            :    -0.36299231 4|riKo)  
    Estimated MTF               :     0.18104003 1w@(5 ^V  
    7%Gwc?[x  
    Compensator Statistics: RP[{4 Q8  
    Change in back focus: e2s]{obf  
    Minimum            :        -0.000000 +6HVhoxU#  
    Maximum            :         0.000000 ^o3"#r{:+  
    Mean               :        -0.000000 a{^m-fSaR"  
    Standard Deviation :         0.000000 f$e[u E r  
    6#7Lm) g8  
    Monte Carlo Analysis: $rv8K j+  
    Number of trials: 20 Q=;U@k@>  
    2@'oe7E  
    Initial Statistics: Normal Distribution ]zE;Tw.S  
    =,spvy'"*C  
      Trial       Criterion        Change /uPcXq:L~  
          1     0.42804416    -0.11598818 :61Tun  
    Change in Focus                :      -0.400171 #5cEV'm;  
          2     0.54384387    -0.00018847 [$0p+1  
    Change in Focus                :       1.018470 :W!7mna  
          3     0.44510003    -0.09893230 T!+5[  
    Change in Focus                :      -0.601922 *H"B _3<n  
          4     0.18154684    -0.36248550 ] o*#t  
    Change in Focus                :       0.920681 0m%|U'm|j  
          5     0.28665820    -0.25737414 5D\f8L  
    Change in Focus                :       1.253875 i2E )P x  
          6     0.21263372    -0.33139862 !=;+%C&8y  
    Change in Focus                :      -0.903878 `^u>9v-+'  
          7     0.40051424    -0.14351809 zMbN;tu  
    Change in Focus                :      -1.354815 dgR g>)V  
          8     0.48754161    -0.05649072 "-e \p lKj  
    Change in Focus                :       0.215922 ;X?}x%$  
          9     0.40357468    -0.14045766 N60rgSzI  
    Change in Focus                :       0.281783 s )noo  
         10     0.26315315    -0.28087919 8ja$g,  
    Change in Focus                :      -1.048393 sF!($k;!  
         11     0.26120585    -0.28282649 Sj]T   
    Change in Focus                :       1.017611 |^:cG4e  
         12     0.24033815    -0.30369419 Y2a5bc P  
    Change in Focus                :      -0.109292 e- :yb^  
         13     0.37164046    -0.17239188 u$DHVRrF<  
    Change in Focus                :      -0.692430 zL$@`Eh-KP  
         14     0.48597489    -0.05805744 D^yRaP*|7  
    Change in Focus                :      -0.662040 V=R 3)GC  
         15     0.21462327    -0.32940907 K-bD<X  
    Change in Focus                :       1.611296 `NCwK6/i  
         16     0.43378226    -0.11025008 [B+yyBtx  
    Change in Focus                :      -0.640081 5b*M*e&=C  
         17     0.39321881    -0.15081353 ]RPs|R?  
    Change in Focus                :       0.914906 <e Th  
         18     0.20692530    -0.33710703 Bc+w+  
    Change in Focus                :       0.801607 $bW3_rl%X  
         19     0.51374068    -0.03029165 Ov 5"  
    Change in Focus                :       0.947293 'FqQzx"r  
         20     0.38013374    -0.16389860 i!J8 d"  
    Change in Focus                :       0.667010 UJD 0K]s  
    }#L^!\V }  
    Number of traceable Monte Carlo files generated: 20 ,F79xx9ufg  
    1n=lqn/  
    Nominal     0.54403234 gp5_Z-me  
    Best        0.54384387    Trial     2 Sh/T,  
    Worst       0.18154684    Trial     4 8J:}%DaxL  
    Mean        0.35770970 =d".|k  
    Std Dev     0.11156454 &M46&^Jho  
    M9!HQ   
    C<NLE-  
    Compensator Statistics: ,5i`-OI  
    Change in back focus: JSkLEa~<  
    Minimum            :        -1.354815 BzkooJ  
    Maximum            :         1.611296 ;T"zV{;7BR  
    Mean               :         0.161872 ?{/4b:ua  
    Standard Deviation :         0.869664 SQ44  
    wP6 Fl L  
    90% >       0.20977951               A0o-:n Fu  
    80% >       0.22748071               !Fca~31R'  
    50% >       0.38667627               '10oK {m$  
    20% >       0.46553746               s8ywKTR-  
    10% >       0.50064115                -wp|RD,}(  
    @OV|]u  
    End of Run. k_sg ?(-!o  
    48:>NW  
    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 kO,zZF&  
    u$>4F|=T  
    +1uF !G&l  
    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>HOn^   
    b<a4'M  
    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                 eZSNNgD<:  
    80% >       0.22748071                 e7m*rh%5>  
    50% >       0.38667627                 Ont%eC\  
    20% >       0.46553746                 %K>,xiD)  
    10% >       0.50064115 eCqHvMp  
    <R''oEf9  
    最后这个数值是MTF值呢，还是MTF的公差？ ?98("T|y;  
    jBgP$g  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   r~/   
    |.F$G<  
    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  : gk"$,\DI  
    90% >       0.20977951                 cc~O&?)i  
    80% >       0.22748071                 uTKD 4yig  
    50% >       0.38667627                 `< xn8h9p  
    20% >       0.46553746                 9s6U}a'c  
    10% >       0.50064115 X!9 B2w  
    ....... ?u" 4@  
    DXJ`oh  
    KG|n  
    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   NbgK@eV}+{  
    Mode                : Sensitivities JM x>][xD  
    Sampling            : 2 }BZ"S-hZ  
    Nominal Criterion   : 0.54403234 ?o81E2TJO  
    Test Wavelength     : 0.6328 nxWY7hU  
    BD_Iz A<wK  
    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？ .1KhBgy^K  
     >qS9PX  
    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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