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    [讨论]公差分析结果的疑问 [复制链接]

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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 "/ 9EUbca  
    *Rx&#9  
    pHNo1-k\  
    uPhL?s{  
    然后添加了默认公差分析，基本没变 ]wxjd l  
    arWP]%E0W  
    sV']p#HK0  
    GBg~NkC7.  
    然后运行分析的结果如下： Vf*Z}'  
    F9}jiCom  
    Analysis of Tolerances `AcUxnO  
    WgTD O3  
    File : E:\光学设计资料\zemax练习\f500.ZMX MJ?fMR@  
    Title: Z~S%|{&Br  
    Date : TUE JUN 21 2011 j:>_1P/  
    7$ze RYD+  
    Units are Millimeters. {wL30D^  
    All changes are computed using linear differences. Ea,L04K  
    mxPzB#t4  
    Paraxial Focus compensation only. ]Y.GU7`  
    z?3t^UPW  
    WARNING: Solves should be removed prior to tolerancing. L ^E#"f  
    R\T1R"1  
    Mnemonics: u5Tu~  
    TFRN: Tolerance on curvature in fringes. KkJrh@lk  
    TTHI: Tolerance on thickness. hj4mbL  
    TSDX: Tolerance on surface decentering in x. _TbQjE&6  
    TSDY: Tolerance on surface decentering in y. UE\Z] t!  
    TSTX: Tolerance on surface tilt in x (degrees). VzTHW5B  
    TSTY: Tolerance on surface tilt in y (degrees). Kg;u.4.-M  
    TIRR: Tolerance on irregularity (fringes). `uh+d  
    TIND: Tolerance on Nd index of refraction. oE.59dx  
    TEDX: Tolerance on element decentering in x. yQz6K6p  
    TEDY: Tolerance on element decentering in y. `k;MGs)&  
    TETX: Tolerance on element tilt in x (degrees). }N0$DqP  
    TETY: Tolerance on element tilt in y (degrees). S*3*Q l*  
    o)2KQ$b>Q  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 1=@csO_yn  
    cF V[k'F  
    WARNING: Boundary constraints on compensators will be ignored. [C^&iLX/F*  
    ks|c'XQb  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Rp0`%}2 o  
    Mode                : Sensitivities E#zLm  
    Sampling            : 2 pNnZ-R|u  
    Nominal Criterion   : 0.54403234 VV+gPC  
    Test Wavelength     : 0.6328 p6c&vEsNj  
    q@=3`yQ  
    3YO %$  
    Fields: XY Symmetric Angle in degrees /$'|`jKsB  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY mMOjV_  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 dJ(<zz+;b  
    1=L5=uz1d:  
    Sensitivity Analysis: p>=i'~lQ6  
    qokCVI-\  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------|  MU>6s`6O  
    Type                      Value      Criterion        Change          Value      Criterion        Change =@ d/SZ|(E  
    Fringe tolerance on surface 1 ?RPVd8PUhN  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 w.o>G2u  
    Change in Focus                :      -0.000000                            0.000000 zL!}YR@&u"  
    Fringe tolerance on surface 2 IgyoBfj\d  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 <Toy8-kj  
    Change in Focus                :       0.000000                            0.000000 y2M]z:Y U  
    Fringe tolerance on surface 3 up!54}qy  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 A4{p(MS5  
    Change in Focus                :      -0.000000                            0.000000 OPuty/^!Gw  
    Thickness tolerance on surface 1 wx*03(|j;  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 34F;mr"yp  
    Change in Focus                :       0.000000                            0.000000 O|AY2QH\  
    Thickness tolerance on surface 2 ]|_UpP8EP  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ],-(YPiAD  
    Change in Focus                :       0.000000                           -0.000000 i4}+n^oSYo  
    Decenter X tolerance on surfaces 1 through 3 tjg?zlj  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 g#%Egb1  
    Change in Focus                :       0.000000                            0.000000 LsxRK5   
    Decenter Y tolerance on surfaces 1 through 3 QAzwNXE+  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 VOSq%hB  
    Change in Focus                :       0.000000                            0.000000 E_ D0Nm%n  
    Tilt X tolerance on surfaces 1 through 3 (degrees) -q30tO.  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Q2Dh(  
    Change in Focus                :       0.000000                            0.000000 %Y-5L;MI  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 0.kC|  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Vji:,k=3\  
    Change in Focus                :       0.000000                            0.000000 M2Jb<y]  
    Decenter X tolerance on surface 1 s4`,Z*H  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ^{Fo,7  
    Change in Focus                :       0.000000                            0.000000 Aa+<4 R  
    Decenter Y tolerance on surface 1 {BY(zsl  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 l T#WM]  
    Change in Focus                :       0.000000                            0.000000 i`}!<{k  
    Tilt X tolerance on surface (degrees) 1 7/zaf  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 (L*<CV  
    Change in Focus                :       0.000000                            0.000000 #.{ddY{  
    Tilt Y tolerance on surface (degrees) 1 }R!t/ 8K  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 @|:yK|6O  
    Change in Focus                :       0.000000                            0.000000 "&C>=  
    Decenter X tolerance on surface 2 $It3}?>C'  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 HX{K5+  
    Change in Focus                :       0.000000                            0.000000 F~sUfqiJ'  
    Decenter Y tolerance on surface 2 ?sv[vR(  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 qVW3oj<2  
    Change in Focus                :       0.000000                            0.000000 ws<p BC,m  
    Tilt X tolerance on surface (degrees) 2 9aBz%* xo  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 4_-L1WH  
    Change in Focus                :       0.000000                            0.000000 q"i]&dMr  
    Tilt Y tolerance on surface (degrees) 2 /@64xrvIl=  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ~t1?oJ  
    Change in Focus                :       0.000000                            0.000000 .I0M'L~!/L  
    Decenter X tolerance on surface 3 hmB`+?,z*  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 qr(t_qR&  
    Change in Focus                :       0.000000                            0.000000 P@5}}vwS  
    Decenter Y tolerance on surface 3 ojyP.R  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 R|92T*h  
    Change in Focus                :       0.000000                            0.000000 A=sz8?K+`  
    Tilt X tolerance on surface (degrees) 3 \]0#jI/:  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 y&V%xE/  
    Change in Focus                :       0.000000                            0.000000 mNlbiB  
    Tilt Y tolerance on surface (degrees) 3 J"-/ok(<@  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 + 2w<V0V_  
    Change in Focus                :       0.000000                            0.000000 {:#c1d2@8  
    Irregularity of surface 1 in fringes " {X0&  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634  z31g"  
    Change in Focus                :       0.000000                            0.000000 2 sj: &][R  
    Irregularity of surface 2 in fringes Wuk!\<T{  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 \opcn\vW  
    Change in Focus                :       0.000000                            0.000000 Qxfds`4V9i  
    Irregularity of surface 3 in fringes m@']%X*(,  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 y;%\ w-.\  
    Change in Focus                :       0.000000                            0.000000 H<tU[U=G  
    Index tolerance on surface 1 H43d[@h  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 -p"}K~lt:  
    Change in Focus                :       0.000000                            0.000000 yg6o#;  
    Index tolerance on surface 2 xiV!\Z}  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 2FY]o~@  
    Change in Focus                :       0.000000                           -0.000000 X|yVRQ?F`  
     A"1%E.1  
    Worst offenders: O^q~dda  
    Type                      Value      Criterion        Change dA^{}zZu  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 R8 LHwRQ  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ?Yx2q_KZk  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 6E2#VT>@/  
    TSTX   2             0.20000000     0.35349910    -0.19053324 a)L|kux;l  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 h;@>E:4Tg  
    TSTY   1             0.20000000     0.42678383    -0.11724851 =?_:h`}  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 4];>O  
    TSTX   1             0.20000000     0.42678383    -0.11724851 L F&!od9[  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 IgRi(q^b-  
    TSTY   3             0.20000000     0.42861670    -0.11541563 OdO n wY  
    DXFDs=u  
    Estimated Performance Changes based upon Root-Sum-Square method: !K+hXQE1  
    Nominal MTF                 :     0.54403234 mi1^hl'2  
    Estimated change            :    -0.36299231 *\ B(-  
    Estimated MTF               :     0.18104003 '-mzt~zGOY  
    ,M:[GuXD<  
    Compensator Statistics: I%($,kd}s  
    Change in back focus: a|(|!=  
    Minimum            :        -0.000000 <9\Lv]ng  
    Maximum            :         0.000000 i(ZzE  
    Mean               :        -0.000000 z "z  
    Standard Deviation :         0.000000 C ^c <s  
    4l>U13~#  
    Monte Carlo Analysis: *^RoI  
    Number of trials: 20 =A~5?J=  
    ;mg.} fI  
    Initial Statistics: Normal Distribution 4`Zo Ar-5|  
    n]7rHV}G  
      Trial       Criterion        Change g}IOHE  
          1     0.42804416    -0.11598818 cB_9@0r[S  
    Change in Focus                :      -0.400171 ;$8ptB.  
          2     0.54384387    -0.00018847 8C[eHC*r  
    Change in Focus                :       1.018470 wn|;Li  
          3     0.44510003    -0.09893230 eCWF0a  
    Change in Focus                :      -0.601922 HH0ck(u_A*  
          4     0.18154684    -0.36248550 stMxlG"d  
    Change in Focus                :       0.920681 R+!oPWfb  
          5     0.28665820    -0.25737414 5s;@;V  
    Change in Focus                :       1.253875 H=w6  
          6     0.21263372    -0.33139862 4>2\{0r  
    Change in Focus                :      -0.903878 ThkCKM  
          7     0.40051424    -0.14351809 _yF@k~ h  
    Change in Focus                :      -1.354815 um%s9  
          8     0.48754161    -0.05649072 5!pNo*QK  
    Change in Focus                :       0.215922 O3)B]!xL  
          9     0.40357468    -0.14045766 df {\O* 6  
    Change in Focus                :       0.281783 nf[KD,f  
         10     0.26315315    -0.28087919 0l/7JH_@V  
    Change in Focus                :      -1.048393 K9Onjs% U  
         11     0.26120585    -0.28282649 Y]Z&  
    Change in Focus                :       1.017611 wWSw0 H/  
         12     0.24033815    -0.30369419 > 5?c93?  
    Change in Focus                :      -0.109292 6`%|-o :  
         13     0.37164046    -0.17239188 h~qv_)F_  
    Change in Focus                :      -0.692430 j}K 3YfH  
         14     0.48597489    -0.05805744 ^uphpABpD  
    Change in Focus                :      -0.662040 >o%X;U 3  
         15     0.21462327    -0.32940907 !I\eIV>0b  
    Change in Focus                :       1.611296 dcTZL$  
         16     0.43378226    -0.11025008 LN5BU,4=  
    Change in Focus                :      -0.640081 xi4b;U j  
         17     0.39321881    -0.15081353 g/WDAO?d  
    Change in Focus                :       0.914906 m-a':  
         18     0.20692530    -0.33710703 j?T>S]xOX  
    Change in Focus                :       0.801607  Hyenn  
         19     0.51374068    -0.03029165 *_m ER`  
    Change in Focus                :       0.947293 <%W&xk  
         20     0.38013374    -0.16389860 tk:nth  
    Change in Focus                :       0.667010 MxUQF?@6  
    GT80k]e.  
    Number of traceable Monte Carlo files generated: 20 `:R9M+ OX  
    =v!Z8zk=W  
    Nominal     0.54403234 XD?]+  
    Best        0.54384387    Trial     2 b6H7>x  
    Worst       0.18154684    Trial     4 Vq/hk  
    Mean        0.35770970 qT:`F  
    Std Dev     0.11156454 2^75|Q  
    %rf6 >  
    #;lEx'lKN  
    Compensator Statistics: M?;YpaSe+  
    Change in back focus: 6i~<,;Cn  
    Minimum            :        -1.354815 }sJ}c}b  
    Maximum            :         1.611296 #Ye0*`  
    Mean               :         0.161872 b$pCp`/MT  
    Standard Deviation :         0.869664 <0m^b#hdG  
    aIr"!. 4  
    90% >       0.20977951               =3rf}bl2  
    80% >       0.22748071               j|qdf3^f  
    50% >       0.38667627               %Wm)  
    20% >       0.46553746               s jaaZx1  
    10% >       0.50064115                rf 60'   
    ,1-idpnX  
    End of Run. 8Fbt >-N<\  
    wr(*RI"  
    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 O3d Qno  
    ^y93h8\y  
    R<hsG%BS(D  
    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 7:=(yBG  
    +afkpvj8  
    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                 vDR> Q&/K  
    80% >       0.22748071                 CSwB+yN  
    50% >       0.38667627                 ' ~z`kah  
    20% >       0.46553746                 5nmE*(  
    10% >       0.50064115 x[BA <UNO  
    >m=XqtP  
    最后这个数值是MTF值呢，还是MTF的公差？ .%\||1F<  
    N[DKA1Ei  
    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？？？   N>g6KgX{K  
    <iH"5DEe  
    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  : y"w`yl{_  
    90% >       0.20977951                 uC 2{ Mmy  
    80% >       0.22748071                 "?"+1S  
    50% >       0.38667627                 5F1P|t#  
    20% >       0.46553746                 D}nRH@<`  
    10% >       0.50064115 V24FzQ?z:.  
    ....... difAQ<`  
    !q^2| %  
    j$z!kd+%  
    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   [nB4s+NX  
    Mode                : Sensitivities -JXCO <~k  
    Sampling            : 2 }h9f(ZyJn  
    Nominal Criterion   : 0.54403234 5R*55@)  
    Test Wavelength     : 0.6328 ;:w0%>X^  
    KhNO xMZ  
    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？ h`V#)Q  
    y- @{  
    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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