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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 /$%apci8  
    3EI$tP@4  
    =Mc*~[D/  
    egYJ.ZzF0  
    然后添加了默认公差分析,基本没变 E/Q[J.$o  
    [_^K}\/+  
    K`M8[ %S  
    {}s7q|$  
    然后运行分析的结果如下: K!).QB'  
    A]WU*GL2H  
    Analysis of Tolerances 2pQ zT  
    ';^VdR]fk  
    File : E:\光学设计资料\zemax练习\f500.ZMX Pn[-{nz  
    Title: ~Ub '5M  
    Date : TUE JUN 21 2011 ,*+F*:o(m  
    pyq~_ Bng  
    Units are Millimeters. "S,,BjL  
    All changes are computed using linear differences. gH,^XZe  
    f2`[skNj  
    Paraxial Focus compensation only. ?.LS _e_0  
    & VJ+X|Z  
    WARNING: Solves should be removed prior to tolerancing. o 3#qp>R  
    mcP]k8?C  
    Mnemonics: f 0~<qT?:n  
    TFRN: Tolerance on curvature in fringes. q3z<v:=1y  
    TTHI: Tolerance on thickness. Z]@my,+Z;  
    TSDX: Tolerance on surface decentering in x. "@ xI  
    TSDY: Tolerance on surface decentering in y. ||;V5iR:  
    TSTX: Tolerance on surface tilt in x (degrees). $>hPB[[  
    TSTY: Tolerance on surface tilt in y (degrees). u<!8dQ8  
    TIRR: Tolerance on irregularity (fringes). k-Hy>5;  
    TIND: Tolerance on Nd index of refraction. +g(>]!swb  
    TEDX: Tolerance on element decentering in x. 'P0:1">  
    TEDY: Tolerance on element decentering in y. }u5/  
    TETX: Tolerance on element tilt in x (degrees). XT9]+b8(M  
    TETY: Tolerance on element tilt in y (degrees). % r`hW \4{  
    A_tdtN<  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. \uQ yp*P1s  
    p9 <XaJ}   
    WARNING: Boundary constraints on compensators will be ignored. 8d?r )/~  
    6ey{+8  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm --6C>iY[&u  
    Mode                : Sensitivities !i,Eo-[Z  
    Sampling            : 2 z\Hg@J&#  
    Nominal Criterion   : 0.54403234 <wfPbzs-V  
    Test Wavelength     : 0.6328 r7+"i9  
    J$F 1sy  
    5Tag-+  
    Fields: XY Symmetric Angle in degrees WWhAm{m  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ~2PD%+e7]  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 y-6k<RN  
     O{R)0&  
    Sensitivity Analysis: {$-lXw4  
    j #G4A%_  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| S~()A*5  
    Type                      Value      Criterion        Change          Value      Criterion        Change |J-Osi  
    Fringe tolerance on surface 1 "yJFb=Xdq  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 Rsd~t_a1  
    Change in Focus                :      -0.000000                            0.000000 ~Ap.#VIc'  
    Fringe tolerance on surface 2 akATwSrU  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 q4=Gj`\43  
    Change in Focus                :       0.000000                            0.000000 6|:K1bI)  
    Fringe tolerance on surface 3 PvF3a `&r  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ?*cr|G$r[  
    Change in Focus                :      -0.000000                            0.000000 WVyk?SBw  
    Thickness tolerance on surface 1 L|ZxB7xk  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 C$WUg<kcK'  
    Change in Focus                :       0.000000                            0.000000 Nk?eVJ)  
    Thickness tolerance on surface 2 6i'GM`>w  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 yhm6%  
    Change in Focus                :       0.000000                           -0.000000 %])U(  
    Decenter X tolerance on surfaces 1 through 3 _}+Aw{7!r  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 zW#P ~zS  
    Change in Focus                :       0.000000                            0.000000 v+d} _rCT  
    Decenter Y tolerance on surfaces 1 through 3 CGw,RNV  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 3MX&%_wUhB  
    Change in Focus                :       0.000000                            0.000000 g?B4b7II  
    Tilt X tolerance on surfaces 1 through 3 (degrees) StLFq6BO  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 =Ot|d #_  
    Change in Focus                :       0.000000                            0.000000 OD[q u  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) D[/h7Ha  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 RK )1@Tz7!  
    Change in Focus                :       0.000000                            0.000000 5<U:Yy  
    Decenter X tolerance on surface 1 2(I S*idq  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 *I]/ [d  
    Change in Focus                :       0.000000                            0.000000 h'lqj0  
    Decenter Y tolerance on surface 1 DpQ\q;  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 .w,$ TezGP  
    Change in Focus                :       0.000000                            0.000000 N_wj,yF*  
    Tilt X tolerance on surface (degrees) 1 B']-4X{SGa  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 EDAtC  
    Change in Focus                :       0.000000                            0.000000 56w uk [)  
    Tilt Y tolerance on surface (degrees) 1 mHe[ NkY6  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 :3b.`s(M  
    Change in Focus                :       0.000000                            0.000000 bT>MZK8b  
    Decenter X tolerance on surface 2 GHNw.<`l?  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 2$r8^}Nj?  
    Change in Focus                :       0.000000                            0.000000 ci 4K Nv;  
    Decenter Y tolerance on surface 2 QjOO^6Fh  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 )DB\du   
    Change in Focus                :       0.000000                            0.000000 9*Q6/?v  
    Tilt X tolerance on surface (degrees) 2 4SVIdSA  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 dJv2tVm&'  
    Change in Focus                :       0.000000                            0.000000 ~Uw;6VXV1  
    Tilt Y tolerance on surface (degrees) 2 ylm # Xa  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 fHK.q({Qc  
    Change in Focus                :       0.000000                            0.000000 :a/l9 m(  
    Decenter X tolerance on surface 3 r[g  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ,I6li7V  
    Change in Focus                :       0.000000                            0.000000 y0f:N U  
    Decenter Y tolerance on surface 3 @U+#@6  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 5o6X.sC8e  
    Change in Focus                :       0.000000                            0.000000 3iM7c.f*/  
    Tilt X tolerance on surface (degrees) 3 "7q!u,u  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 E/V_gci  
    Change in Focus                :       0.000000                            0.000000 : &bJMzB  
    Tilt Y tolerance on surface (degrees) 3 \VpN:RI  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Gg e X  
    Change in Focus                :       0.000000                            0.000000 S=}1k,I  
    Irregularity of surface 1 in fringes iD*21c<kd  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 40%fOu,u`  
    Change in Focus                :       0.000000                            0.000000 p$=Z0p4%LL  
    Irregularity of surface 2 in fringes dd=ca0c7e  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 OUq%d8 W  
    Change in Focus                :       0.000000                            0.000000 ]ur?i{S,  
    Irregularity of surface 3 in fringes 577#A,O  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 .Hnhd/ c  
    Change in Focus                :       0.000000                            0.000000 B"YN+So  
    Index tolerance on surface 1 9(3]t}J5 d  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 xkCM*5:  
    Change in Focus                :       0.000000                            0.000000 'ZJb`  
    Index tolerance on surface 2 <?nz>vz  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 qjObu\r  
    Change in Focus                :       0.000000                           -0.000000 !YPwql(  
    IaZmN.k*  
    Worst offenders: {]bmecz  
    Type                      Value      Criterion        Change e |K_y~  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 jG~-V<&  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Mw3$QRM  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 !2Gua1z!CJ  
    TSTX   2             0.20000000     0.35349910    -0.19053324 qV9}N-sS  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 DIABR%0  
    TSTY   1             0.20000000     0.42678383    -0.11724851 _@i-?Q  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 eC"k-a8j+  
    TSTX   1             0.20000000     0.42678383    -0.11724851 |a#=o}R_  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 !Q WNHL  
    TSTY   3             0.20000000     0.42861670    -0.11541563 NN#k^[i1  
    K@<*m!%<2  
    Estimated Performance Changes based upon Root-Sum-Square method: 3-btaG'P  
    Nominal MTF                 :     0.54403234 wFF,rUV  
    Estimated change            :    -0.36299231 #W6 6`{>  
    Estimated MTF               :     0.18104003 JH| D  
    -oUGmV_  
    Compensator Statistics: ul3~!9F5F  
    Change in back focus: !E&l=* lM.  
    Minimum            :        -0.000000 \=D+7'3  
    Maximum            :         0.000000 -RJ~Sky[  
    Mean               :        -0.000000 >?1GJ5]\s  
    Standard Deviation :         0.000000 Zb=;\l*&  
    EnGh&]  
    Monte Carlo Analysis: ep~+]7\  
    Number of trials: 20 #K0/ >W  
    <THw l/a  
    Initial Statistics: Normal Distribution oi]XSh[_s  
    %%F, G  
      Trial       Criterion        Change 1.M<u)1GU  
          1     0.42804416    -0.11598818 /O<~n%< G  
    Change in Focus                :      -0.400171 #8sy QWlG  
          2     0.54384387    -0.00018847 Mk~U/oq  
    Change in Focus                :       1.018470 "b402"&  
          3     0.44510003    -0.09893230 tmOy"mq67  
    Change in Focus                :      -0.601922 HU'w[r 6a  
          4     0.18154684    -0.36248550 gyq6LRb  
    Change in Focus                :       0.920681 ~r?tFE* +  
          5     0.28665820    -0.25737414 bfpeK>T  
    Change in Focus                :       1.253875 Oe x   
          6     0.21263372    -0.33139862 r&Nh>6<&/  
    Change in Focus                :      -0.903878 Q>\ Ho'  
          7     0.40051424    -0.14351809 yH=<KYk  
    Change in Focus                :      -1.354815 CcW3o"=4  
          8     0.48754161    -0.05649072 [0qswsV  
    Change in Focus                :       0.215922 KAXjvZN1  
          9     0.40357468    -0.14045766 SOE-Kio=B  
    Change in Focus                :       0.281783 pfu"vo(t_  
         10     0.26315315    -0.28087919 %f'=9pit  
    Change in Focus                :      -1.048393 qtdkK LT  
         11     0.26120585    -0.28282649 U# [T!E  
    Change in Focus                :       1.017611 4lR+nmAZ  
         12     0.24033815    -0.30369419 FAL#p$y}  
    Change in Focus                :      -0.109292 .rG~\Ws  
         13     0.37164046    -0.17239188 G62;p#  
    Change in Focus                :      -0.692430 rHjDf[5+  
         14     0.48597489    -0.05805744 Op8Gj  `  
    Change in Focus                :      -0.662040 +'SL5d*  
         15     0.21462327    -0.32940907 P5h*RV>oS  
    Change in Focus                :       1.611296 j94~c YV  
         16     0.43378226    -0.11025008 xI<B)6D;f  
    Change in Focus                :      -0.640081 4CchE15  
         17     0.39321881    -0.15081353 ;~DrsQb  
    Change in Focus                :       0.914906 MM]0}65KG  
         18     0.20692530    -0.33710703 [TQYu:e  
    Change in Focus                :       0.801607 ovOV&Zt  
         19     0.51374068    -0.03029165 5L<A7^j  
    Change in Focus                :       0.947293 @{#'y4\>  
         20     0.38013374    -0.16389860 A4|7^Ay  
    Change in Focus                :       0.667010 (1q(6!  
    50|nQ:u,  
    Number of traceable Monte Carlo files generated: 20 9mp`LT  
    H;NAS/OhS  
    Nominal     0.54403234 "9d Z z/{  
    Best        0.54384387    Trial     2 ;hODzfNkS  
    Worst       0.18154684    Trial     4 g33Y$Xdk  
    Mean        0.35770970 3 ^x&G?)  
    Std Dev     0.11156454 v(R^LqE  
    +|b#|>6  
    K|\0jd)N  
    Compensator Statistics: ;F*^c )  
    Change in back focus: lK/4"&  
    Minimum            :        -1.354815 TghT{h@  
    Maximum            :         1.611296 wLiPkW  
    Mean               :         0.161872  6W  
    Standard Deviation :         0.869664 l%('5oz@\  
    c$)>$&([  
    90% >       0.20977951               a * CXg.i  
    80% >       0.22748071               F'>yBDm*OM  
    50% >       0.38667627               bf=\ED^  
    20% >       0.46553746               H"A@Q.'  
    10% >       0.50064115                ~3Pp}eO~V  
    6iXV  
    End of Run. '5*&  
    O"|d~VQ  
    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 901 5PEO  
    !-n* ]C  
    <+r~?X_  
    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 A@?-"=h}  
    -6WSYpHV  
    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                 Z!fbc#L6  
    80% >       0.22748071                 #)48dW!n  
    50% >       0.38667627                 Fo%`X[?  
    20% >       0.46553746                 L})*ck  
    10% >       0.50064115 Uugq.'>  
    :J x%K  
    最后这个数值是MTF值呢,还是MTF的公差? *V+,X  
    \UM&|yk:  
    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???   ei=u$S.  
    T$<'ZC  
    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???
    离线天地大同
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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=<zR9f`  
    90% >       0.20977951                 B !rb*"[  
    80% >       0.22748071                 L7xiq{t`Y  
    50% >       0.38667627                 B(eiRr3  
    20% >       0.46553746                 =dQF}-{!  
    10% >       0.50064115 d:cOdm>,  
    ....... YT)1_>*\  
    5*90t{#  
    B_8JwMJu3  
    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   20Jlf?  
    Mode                : Sensitivities (5hUoDr!  
    Sampling            : 2 #0^a-47PA<  
    Nominal Criterion   : 0.54403234 l6MBnvi   
    Test Wavelength     : 0.6328 .~^A!t  
    1NrNTBI@  
    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? oXVx9dZ  
    9sv#TT5V  
    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?
    离线天地大同
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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