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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 xhALJfv  
    R*6TS"aL  
    O]I AIM  
    (\qf>l+*  
    然后添加了默认公差分析，基本没变 myo4`oH  
    1#Vd)vSP  
    +P))*0(c_  
    remc_}`w  
    然后运行分析的结果如下： zeGWM,!  
    56Lxr{+X  
    Analysis of Tolerances PVi;h%>Y  
    Ifp8oL?S;  
    File : E:\光学设计资料\zemax练习\f500.ZMX 2H;#L`Z*  
    Title: [Vbd su9  
    Date : TUE JUN 21 2011 F*G]Na@6D  
    M[985bl  
    Units are Millimeters. >JNdtP8s/1  
    All changes are computed using linear differences. +184|nJ<2  
    !}} )f/  
    Paraxial Focus compensation only. blomB2vQ  
    p63fpnH  
    WARNING: Solves should be removed prior to tolerancing. $JOtUB{  
    {JdXn  
    Mnemonics: }#<Rs  
    TFRN: Tolerance on curvature in fringes. dOaOWMrfdf  
    TTHI: Tolerance on thickness. |7 K>`  
    TSDX: Tolerance on surface decentering in x. `j {q  
    TSDY: Tolerance on surface decentering in y. *QN,w BQ  
    TSTX: Tolerance on surface tilt in x (degrees). xsU%?"r  
    TSTY: Tolerance on surface tilt in y (degrees). +6:  
    TIRR: Tolerance on irregularity (fringes). a,fcKe&B  
    TIND: Tolerance on Nd index of refraction. J<0sT=/2$  
    TEDX: Tolerance on element decentering in x. d v4~CW%Td  
    TEDY: Tolerance on element decentering in y. D<70rBf2  
    TETX: Tolerance on element tilt in x (degrees). C\{ KB@C\*  
    TETY: Tolerance on element tilt in y (degrees). H{*rV>%  
    jcC"vr'u|  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. _|;d D  
    mY=sh{ir  
    WARNING: Boundary constraints on compensators will be ignored. Xtz29  
    K:13t|  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm jc3Q3Th/zn  
    Mode                : Sensitivities CY=lN5!J  
    Sampling            : 2 M:.+^.h  
    Nominal Criterion   : 0.54403234  rPr]f;  
    Test Wavelength     : 0.6328 Pc?"H!Hkn  
    'JgCl'k,  
    !5'4FUlJ  
    Fields: XY Symmetric Angle in degrees K/(QR_@?  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY W2%@}IDm  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 Ugo!  
    |7KWa(V5I  
    Sensitivity Analysis: -k:x e:$  
    r=37Q14v  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| .p Mwa  
    Type                      Value      Criterion        Change          Value      Criterion        Change !Mgo~h"]#  
    Fringe tolerance on surface 1 5MYdLAjV  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 KL!cPnAUu  
    Change in Focus                :      -0.000000                            0.000000 R@uA4Al  
    Fringe tolerance on surface 2 : &nF>  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 |Ch ,C  
    Change in Focus                :       0.000000                            0.000000 c om4@NK  
    Fringe tolerance on surface 3 l['p^-I  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Q(Yn8t  
    Change in Focus                :      -0.000000                            0.000000 <H#0pFB  
    Thickness tolerance on surface 1 0$b4\.0>~  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 E 6MeM'sx  
    Change in Focus                :       0.000000                            0.000000 NB44GP1-@  
    Thickness tolerance on surface 2 `gC J[  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 XgXXBKf$  
    Change in Focus                :       0.000000                           -0.000000 X. Ur`X  
    Decenter X tolerance on surfaces 1 through 3 4o ";p}[b  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 LPs5LE[Pm  
    Change in Focus                :       0.000000                            0.000000 .nNZ dta&=  
    Decenter Y tolerance on surfaces 1 through 3 IMM+g]#e  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ,cS_687o  
    Change in Focus                :       0.000000                            0.000000 pUqNB_  
    Tilt X tolerance on surfaces 1 through 3 (degrees) >hSu1s:  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 K;Hgq4  
    Change in Focus                :       0.000000                            0.000000 p(="73  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) Yv)c\hm(7j  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 =z"8#_3A  
    Change in Focus                :       0.000000                            0.000000 ^7i7yM}6(  
    Decenter X tolerance on surface 1 2wPc yD  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 _cC!rq U1  
    Change in Focus                :       0.000000                            0.000000 Tb;,t=;u  
    Decenter Y tolerance on surface 1 (GGosXU-v  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 gMZ+kP`  
    Change in Focus                :       0.000000                            0.000000 \ qq  
    Tilt X tolerance on surface (degrees) 1 EbX!;z  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 NX8hFwR  
    Change in Focus                :       0.000000                            0.000000 Qv'x+GVW]  
    Tilt Y tolerance on surface (degrees) 1 8D@Jd  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 lup2> "?*  
    Change in Focus                :       0.000000                            0.000000 u>vvW|OB[  
    Decenter X tolerance on surface 2 `:EhYj.   
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 oclU)f.,  
    Change in Focus                :       0.000000                            0.000000 Fv)E:PnKC  
    Decenter Y tolerance on surface 2 -F*vN'  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 A n`*![  
    Change in Focus                :       0.000000                            0.000000 =-r); d  
    Tilt X tolerance on surface (degrees) 2  /d!  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 fE)o-q6Z  
    Change in Focus                :       0.000000                            0.000000 XpkOCo02  
    Tilt Y tolerance on surface (degrees) 2 ~b X~_\  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 \o72VHG66  
    Change in Focus                :       0.000000                            0.000000 mvTp,^1  
    Decenter X tolerance on surface 3 Z1v~tqx  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 I S'Uuuz7g  
    Change in Focus                :       0.000000                            0.000000 9;\mq'v%  
    Decenter Y tolerance on surface 3 r_,;[+!  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 X6(s][Wn  
    Change in Focus                :       0.000000                            0.000000 )[M:#;,L  
    Tilt X tolerance on surface (degrees) 3 3iX\):4  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 |6^%_kO!|  
    Change in Focus                :       0.000000                            0.000000 cPAR.h,b?  
    Tilt Y tolerance on surface (degrees) 3 Y6)o7t  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 rev*G:  
    Change in Focus                :       0.000000                            0.000000 |#SZd Xg  
    Irregularity of surface 1 in fringes Y.tT#J^=  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 dkDPze9l  
    Change in Focus                :       0.000000                            0.000000 < FO=PM  
    Irregularity of surface 2 in fringes U1lqg?KO  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ;b1B*B  
    Change in Focus                :       0.000000                            0.000000 T,>L  
    Irregularity of surface 3 in fringes 0WSZhzNyY  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 |S |'o*u  
    Change in Focus                :       0.000000                            0.000000 S++~w9}  
    Index tolerance on surface 1 :{lP9%J-  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 "8cI]~ V  
    Change in Focus                :       0.000000                            0.000000 M3|G^q:l  
    Index tolerance on surface 2 wD{c$TJ?{F  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Sl^PELU  
    Change in Focus                :       0.000000                           -0.000000 SZ$WC8AX  
    Qr7v^H~E4.  
    Worst offenders: ^[Ka+E^Q  
    Type                      Value      Criterion        Change =8<~pr-NO  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 kmt1vV.9  
    TSTY   2             0.20000000     0.35349910    -0.19053324 %8xRT@Q  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 woP j>M  
    TSTX   2             0.20000000     0.35349910    -0.19053324 m~Q24Z]!'&  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 'x"(OdM:[  
    TSTY   1             0.20000000     0.42678383    -0.11724851 fG$LqzyqlK  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Qs59IZ  
    TSTX   1             0.20000000     0.42678383    -0.11724851 S1mMz i  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 EEL3~H{(  
    TSTY   3             0.20000000     0.42861670    -0.11541563 YC56] Zp  
    6W=V8  
    Estimated Performance Changes based upon Root-Sum-Square method: zUv#%Q8vw  
    Nominal MTF                 :     0.54403234 w( XZSE  
    Estimated change            :    -0.36299231 +0UBP7kn  
    Estimated MTF               :     0.18104003 G\;6n  
    x(eX.>o\  
    Compensator Statistics: c-Yd> 4+ 1  
    Change in back focus: Rq[d\BN0.d  
    Minimum            :        -0.000000 ~eoM 2XlW  
    Maximum            :         0.000000 h ! R=t  
    Mean               :        -0.000000 7X/t2Vih@  
    Standard Deviation :         0.000000 p e+h8  
    fbOqxF"?we  
    Monte Carlo Analysis: lG94^|U  
    Number of trials: 20 emnT;kJ>  
    Km%L1Cd]  
    Initial Statistics: Normal Distribution X~JP 1  
    =D Q :0w  
      Trial       Criterion        Change urjf3h[%  
          1     0.42804416    -0.11598818 $#u'XyA  
    Change in Focus                :      -0.400171 qa )BbK^i  
          2     0.54384387    -0.00018847 _(kaaWJ  
    Change in Focus                :       1.018470 PzNPwd  
          3     0.44510003    -0.09893230 NE8W--Cg|  
    Change in Focus                :      -0.601922 Ihf :k_;  
          4     0.18154684    -0.36248550 [p`5$\e  
    Change in Focus                :       0.920681 \P?X`]NwnO  
          5     0.28665820    -0.25737414 ]FTi2B{}H  
    Change in Focus                :       1.253875 0Q_*Z (  
          6     0.21263372    -0.33139862 $Emu*'  
    Change in Focus                :      -0.903878 @y`xFPB  
          7     0.40051424    -0.14351809 |.UY' B  
    Change in Focus                :      -1.354815 !+^'Ej)z  
          8     0.48754161    -0.05649072 /+SLq`'u)  
    Change in Focus                :       0.215922 ~S\L(B(  
          9     0.40357468    -0.14045766 =huV(THU  
    Change in Focus                :       0.281783 +W*~=*h|  
         10     0.26315315    -0.28087919 `;;l {8  
    Change in Focus                :      -1.048393 Hn(1_I%zF  
         11     0.26120585    -0.28282649 6xJffl  
    Change in Focus                :       1.017611 L8PX SJ  
         12     0.24033815    -0.30369419 X(nyTR8  
    Change in Focus                :      -0.109292 PKSfu++Z  
         13     0.37164046    -0.17239188 $P0q!  
    Change in Focus                :      -0.692430 Q[7i  
         14     0.48597489    -0.05805744 PLc5m5  
    Change in Focus                :      -0.662040 x2#JD|0  
         15     0.21462327    -0.32940907 \BXzmok  
    Change in Focus                :       1.611296 Zg(Y$ h\  
         16     0.43378226    -0.11025008 FHSoj=  
    Change in Focus                :      -0.640081 ~dRstH7u  
         17     0.39321881    -0.15081353 r8Pd}ptPU  
    Change in Focus                :       0.914906 cZ?QI6|[  
         18     0.20692530    -0.33710703 EaO@I.[  
    Change in Focus                :       0.801607 X&qx4 DL  
         19     0.51374068    -0.03029165 P)=.D u)  
    Change in Focus                :       0.947293 @9gZH_ur>E  
         20     0.38013374    -0.16389860 f`uRC-B/  
    Change in Focus                :       0.667010 nG!<wlY14P  
    -y+>^45  
    Number of traceable Monte Carlo files generated: 20 ]19VEH  
    :/;/mHG]  
    Nominal     0.54403234 kk3^m1  
    Best        0.54384387    Trial     2 EbQLMLD%  
    Worst       0.18154684    Trial     4 PX 8UVA  
    Mean        0.35770970 [s {!  
    Std Dev     0.11156454 7mi!yTr}  
    mUh]`/MK$  
    #]@HsVXh7  
    Compensator Statistics: d qn5G!fI  
    Change in back focus: Bvn3:+(47  
    Minimum            :        -1.354815 $>XeC}"x68  
    Maximum            :         1.611296 i/ilG 3m>  
    Mean               :         0.161872 c~Ka) dF|  
    Standard Deviation :         0.869664 >0IZ%Wiz  
    %T{]l;5  
    90% >       0.20977951               }9'`3vsJ  
    80% >       0.22748071               o|(5Sr&H  
    50% >       0.38667627               7Gc{&hp*  
    20% >       0.46553746               _8VP'S=  
    10% >       0.50064115                RP&bb{Y  
    z*eBjHbF  
    End of Run. &N|$G8\CY  
    $RaN@& Wm  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 @^W`Yg)C  
    ` R6`"hx$  
    k&]nF,f  
    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 jhNFaBrS  
    >1~ /:DJ  
    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                 ':'g!b`/  
    80% >       0.22748071                 X%1TsCKMj  
    50% >       0.38667627                 p\6cpf  
    20% >       0.46553746                 p*Bty@CRi  
    10% >       0.50064115 ;?-AFd\i  
    XpQOl  
    最后这个数值是MTF值呢，还是MTF的公差？ tT$OnZu&  
    ]n22+]D  
    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？？？   }I"C4'(a  
    (C2 XFg_  
    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  : *P()&}JK  
    90% >       0.20977951                 QbU5FPiN  
    80% >       0.22748071                 $o6/dEKQ  
    50% >       0.38667627                 Iw1Y?Qia  
    20% >       0.46553746                 @WJ;T= L  
    10% >       0.50064115 I8F+Z  
    ....... *2X6;~  
    8$Q`wRt(%  
    HN47/]"*  
    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   ,OZ  
    Mode                : Sensitivities B6XO&I1c  
    Sampling            : 2 N'^>pSc4W|  
    Nominal Criterion   : 0.54403234 ycGY5t@K@  
    Test Wavelength     : 0.6328 *% -<Ldv  
    +vc+9E.?9  
    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？ l\U Q2i  
    <y 4(!z"  
    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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