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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 DS+BX`i%#p  
    <*I*#WI&B  
    ykRd+H-t  
    EERCb%M 8Z  
    然后添加了默认公差分析，基本没变 L#?mPF  
    k]A =Q  
    X(O:y^sX}  
    a ]:xsJ~  
    然后运行分析的结果如下： _%3p&1ld  
    7^V`B^Vu  
    Analysis of Tolerances '0^lMQMg  
    EL%Pv1  
    File : E:\光学设计资料\zemax练习\f500.ZMX 8>G5VhCm~o  
    Title: 1Vkb}A,'  
    Date : TUE JUN 21 2011 >7)QdaB  
    >(_2'c*[w  
    Units are Millimeters. :]4s;q:m  
    All changes are computed using linear differences. /oZvm   
    g##<d(e!}  
    Paraxial Focus compensation only. ?VCp_Ji  
    ~1XC5.*-  
    WARNING: Solves should be removed prior to tolerancing. # F6<N]i  
    .AQTUd(_  
    Mnemonics: mG1!~}[  
    TFRN: Tolerance on curvature in fringes. S(Z\h_m(  
    TTHI: Tolerance on thickness. z}iz~WZ  
    TSDX: Tolerance on surface decentering in x. G*=&yx."E  
    TSDY: Tolerance on surface decentering in y. v-8{mK`9\  
    TSTX: Tolerance on surface tilt in x (degrees). A8QUfg@uK~  
    TSTY: Tolerance on surface tilt in y (degrees). !acuOBv,  
    TIRR: Tolerance on irregularity (fringes). ~Y{]yBGoF  
    TIND: Tolerance on Nd index of refraction. *%\Xw*\0  
    TEDX: Tolerance on element decentering in x. %__ @G_M  
    TEDY: Tolerance on element decentering in y. r oPC ^Q  
    TETX: Tolerance on element tilt in x (degrees). R%~~'/2V  
    TETY: Tolerance on element tilt in y (degrees). '"XVe+.O  
    y<~(}xsHh  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. c (29JZ  
    ;1s;"  
    WARNING: Boundary constraints on compensators will be ignored. 4`'Rm/)  
    N?8nlrDQ  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 3sRI 7g  
    Mode                : Sensitivities eoFG$X/PO  
    Sampling            : 2 ]T(qk  
    Nominal Criterion   : 0.54403234 ZFh[xg'0  
    Test Wavelength     : 0.6328 mI\[L2x  
    ADM!4L(s4}  
    S|;}]6p  
    Fields: XY Symmetric Angle in degrees 3''Uxlo\  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY xOr"3;^  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 gK"(;Jih$  
    eL'fJcjw<  
    Sensitivity Analysis: Ted tmX$  
    Pf;RJeD  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| z =\ENG|x#  
    Type                      Value      Criterion        Change          Value      Criterion        Change tR 4+]K  
    Fringe tolerance on surface 1 xIV#}z0  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 g~(G P  
    Change in Focus                :      -0.000000                            0.000000 nv(6NV  
    Fringe tolerance on surface 2 + rM]RFi  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 3g56[;Up?  
    Change in Focus                :       0.000000                            0.000000 ,,1y0s0`  
    Fringe tolerance on surface 3 .g7\+aiTUd  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 nEP3B '+  
    Change in Focus                :      -0.000000                            0.000000 rWqr-"0S.  
    Thickness tolerance on surface 1 D51s)?  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525  R7;X  
    Change in Focus                :       0.000000                            0.000000 6JeAXj1g+  
    Thickness tolerance on surface 2 ]dV $H  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 I)9 ,  
    Change in Focus                :       0.000000                           -0.000000 arS@l<79  
    Decenter X tolerance on surfaces 1 through 3 Bk@EQdn  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Jh36NE8r  
    Change in Focus                :       0.000000                            0.000000 HX,i{aWWy  
    Decenter Y tolerance on surfaces 1 through 3 {%RwZ'  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 &os:h] C  
    Change in Focus                :       0.000000                            0.000000 |9BX  ~`{  
    Tilt X tolerance on surfaces 1 through 3 (degrees) [jxh$}?P  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 K@oyvJ$  
    Change in Focus                :       0.000000                            0.000000 ] yWywa\  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) G8MLg#  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 7AqbfLO  
    Change in Focus                :       0.000000                            0.000000 T-iQ!D~  
    Decenter X tolerance on surface 1 \@T;/Pj{[  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 T11>&K)  
    Change in Focus                :       0.000000                            0.000000 '#oH1$W]  
    Decenter Y tolerance on surface 1 #;+SAoN  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 -G'3&L4 D  
    Change in Focus                :       0.000000                            0.000000 -i_XP]b&  
    Tilt X tolerance on surface (degrees) 1 kw7E<aF!  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 )>iPx.hVSS  
    Change in Focus                :       0.000000                            0.000000 DMSC(Sz  
    Tilt Y tolerance on surface (degrees) 1 PsS.lhj0"  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ~BE=z:  
    Change in Focus                :       0.000000                            0.000000 |Ho} D~  
    Decenter X tolerance on surface 2  [@3.dd  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 i=hA. y`  
    Change in Focus                :       0.000000                            0.000000 K(?p]wh  
    Decenter Y tolerance on surface 2 \.GA" _y  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 "ub0}p4V  
    Change in Focus                :       0.000000                            0.000000 MX+gc$Y O  
    Tilt X tolerance on surface (degrees) 2 '$ z@40u  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ytV[x  
    Change in Focus                :       0.000000                            0.000000 x2/ciC  
    Tilt Y tolerance on surface (degrees) 2 u6:$AA  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 6\VZ 6oS  
    Change in Focus                :       0.000000                            0.000000 e5"5 U7  
    Decenter X tolerance on surface 3 L. S/Mv  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 nU6UjC|3  
    Change in Focus                :       0.000000                            0.000000 jR+k x:+  
    Decenter Y tolerance on surface 3 EY c)v6[  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 >7 cDfv"  
    Change in Focus                :       0.000000                            0.000000 3{Zd<JYg4-  
    Tilt X tolerance on surface (degrees) 3 10GU2a$0"$  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 YM.  
    Change in Focus                :       0.000000                            0.000000 ~EvGNnTL  
    Tilt Y tolerance on surface (degrees) 3 Zw<<p|{)<  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 /1bQ RI^\  
    Change in Focus                :       0.000000                            0.000000 7&w[h4Lw  
    Irregularity of surface 1 in fringes [o7Qr?RN  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Ysw&J}6e  
    Change in Focus                :       0.000000                            0.000000 ta'wX   
    Irregularity of surface 2 in fringes ivt ~ S  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 i'1 MZ%.  
    Change in Focus                :       0.000000                            0.000000 /#q6.du  
    Irregularity of surface 3 in fringes `_]UlI_h  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 -[h|*G.J  
    Change in Focus                :       0.000000                            0.000000 '!`]Zc  
    Index tolerance on surface 1 6['o^>\}f  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 d7:=axo,  
    Change in Focus                :       0.000000                            0.000000 fhC|=0XB  
    Index tolerance on surface 2 tDMNpl  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 lg{/5gQG  
    Change in Focus                :       0.000000                           -0.000000 zH#urF6<  
    w02C1oGfx  
    Worst offenders: yb0Mn*X+ N  
    Type                      Value      Criterion        Change |8)\8b|VuC  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 a6;5mx  
    TSTY   2             0.20000000     0.35349910    -0.19053324 8,e%=7h_e  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 (rq(y$N  
    TSTX   2             0.20000000     0.35349910    -0.19053324 ]*Kv[%r07c  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 PR,8c  
    TSTY   1             0.20000000     0.42678383    -0.11724851 >Nx4 +|  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 h2i1w^f  
    TSTX   1             0.20000000     0.42678383    -0.11724851 kE[R9RS!  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 oR3t vw.  
    TSTY   3             0.20000000     0.42861670    -0.11541563 lB8g D  
    ::-*~CH)  
    Estimated Performance Changes based upon Root-Sum-Square method: mMO]l(a&  
    Nominal MTF                 :     0.54403234 :-(qqC:  
    Estimated change            :    -0.36299231 FC]n?1?<(  
    Estimated MTF               :     0.18104003 :sA UV79M  
     [ A 7{}  
    Compensator Statistics: 9o3?  
    Change in back focus: Y.#fpG'  
    Minimum            :        -0.000000 ,3!4 D^  
    Maximum            :         0.000000 (Ap?ixrR_  
    Mean               :        -0.000000 HK%W7i/k@  
    Standard Deviation :         0.000000 *55unc  
    h R6Pj"@0  
    Monte Carlo Analysis: 2@I0p\a  
    Number of trials: 20 _sY; dS/  
    c: (nlYZ   
    Initial Statistics: Normal Distribution x+DecO2  
    Z'|k M!  
      Trial       Criterion        Change 3 .KNAObO  
          1     0.42804416    -0.11598818 |t~>Xs  
    Change in Focus                :      -0.400171 Wr'1Y7z  
          2     0.54384387    -0.00018847 Gi*_ &  
    Change in Focus                :       1.018470 \p]B8hLW  
          3     0.44510003    -0.09893230 b # Llu$  
    Change in Focus                :      -0.601922 JU)k+:\a  
          4     0.18154684    -0.36248550 $I4Wl:(~}  
    Change in Focus                :       0.920681 9n"MNedqH  
          5     0.28665820    -0.25737414 *M$'dLn  
    Change in Focus                :       1.253875 io@f5E+?  
          6     0.21263372    -0.33139862 Iv*u#]{t  
    Change in Focus                :      -0.903878 v2="j  
          7     0.40051424    -0.14351809 mU.c!|Y  
    Change in Focus                :      -1.354815 \0&F'V  
          8     0.48754161    -0.05649072 rZE+B25T~  
    Change in Focus                :       0.215922 {kr14 l*2  
          9     0.40357468    -0.14045766 q1m{G1W n  
    Change in Focus                :       0.281783 S,Tc\}  
         10     0.26315315    -0.28087919 Z9Z\2t  
    Change in Focus                :      -1.048393 Ds#BfP7a  
         11     0.26120585    -0.28282649 G&"O)$h  
    Change in Focus                :       1.017611 EBr?>hl  
         12     0.24033815    -0.30369419 c@J@*.q]   
    Change in Focus                :      -0.109292 \xQu*M:!  
         13     0.37164046    -0.17239188 _rmKvSD%  
    Change in Focus                :      -0.692430 {Byh:-e<  
         14     0.48597489    -0.05805744 T)',}=  
    Change in Focus                :      -0.662040 :+"H h%  
         15     0.21462327    -0.32940907 yqB!0) <  
    Change in Focus                :       1.611296  L|6I  
         16     0.43378226    -0.11025008 `PSjk F(  
    Change in Focus                :      -0.640081 J;4aghzY  
         17     0.39321881    -0.15081353 mkl^2V13~  
    Change in Focus                :       0.914906 [+!&iN  
         18     0.20692530    -0.33710703 +[_3h9BK  
    Change in Focus                :       0.801607 dP`B9>r  
         19     0.51374068    -0.03029165 3xiDt?&H  
    Change in Focus                :       0.947293 ZDov2W  
         20     0.38013374    -0.16389860 tBX71d T  
    Change in Focus                :       0.667010 d`~~Ww1  
    S5d  
    Number of traceable Monte Carlo files generated: 20 "\ =Phqw   
    h_SkX@"/-  
    Nominal     0.54403234 [^^Pl:+  
    Best        0.54384387    Trial     2 \-f/\P/ w  
    Worst       0.18154684    Trial     4 U3Z-1G~*r  
    Mean        0.35770970 C\B4Uu6q  
    Std Dev     0.11156454 _ElG&hyp  
    =|8hG*D8  
    `#vbV/sM  
    Compensator Statistics: ga(k2Q;y  
    Change in back focus: yxU9W,D v  
    Minimum            :        -1.354815 .J O1kt  
    Maximum            :         1.611296 +-,iC6kK  
    Mean               :         0.161872 *[|+5LVn  
    Standard Deviation :         0.869664 ;mvVo-r*q  
    mCG&=Fx  
    90% >       0.20977951               Ez-Q'v(9  
    80% >       0.22748071               0/9]T Ic  
    50% >       0.38667627               CPMGsW^  
    20% >       0.46553746               SD<a#S\o  
    10% >       0.50064115                `b%lojT.  
    51y#A Q@  
    End of Run. To5hVL<Ex"  
    $*T?}r>  
    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 UGj |)/  
    '+27_j  
    Iy&,1CI"]  
    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 v^vi *c  
    \4^rb?B  
    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                 stBe ^C  
    80% >       0.22748071                 G{E`5KIvm  
    50% >       0.38667627                 kFV, Fg  
    20% >       0.46553746                 +38R#2JV  
    10% >       0.50064115 nS*Y+Q^9a  
    ,^97Ks ;  
    最后这个数值是MTF值呢，还是MTF的公差？ XW" 0:}`J  
    T9H*]LxK  
    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？？？   dK4rrO  
    >MYDwH  
    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  : IR6W'vA  
    90% >       0.20977951                 (Xh <F  
    80% >       0.22748071                 +[!S[KE  
    50% >       0.38667627                 vW1^  
    20% >       0.46553746                 pj$JA  
    10% >       0.50064115 73;Y(uh9  
    ....... Lt't   
    )!2@v@SQ  
    9&n9J^3L  
    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   `Nx@MPo  
    Mode                : Sensitivities xsZG(Tz  
    Sampling            : 2 yE8D^M|g  
    Nominal Criterion   : 0.54403234 .<%tu 0  
    Test Wavelength     : 0.6328 r&]XNq'P9  
    D&%8JL  
    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？ {rc3`<%  
    wpK1nA+7N  
    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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