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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 _V{WXsOx(  
    $}k"wI[  
    |U^ ff^]  
    S&]:=He  
    然后添加了默认公差分析,基本没变 (cYc03"  
    h3 p 3~xq  
    -lMC{~h\(S  
    5H 1(C#|  
    然后运行分析的结果如下: ~9oS~fP?I  
    |<ke>j/6n  
    Analysis of Tolerances cp?`\P  
    {djOU 9]  
    File : E:\光学设计资料\zemax练习\f500.ZMX ^@)/VfVg  
    Title: =10t3nA1$  
    Date : TUE JUN 21 2011 de1&  
    XE$eHx3;  
    Units are Millimeters. ]V@! kg(p8  
    All changes are computed using linear differences. +nMgQOs  
    o-O/MS   
    Paraxial Focus compensation only. ^s5.jlZr@  
    fJE ki>1  
    WARNING: Solves should be removed prior to tolerancing.  ]NAPvw#p  
    RFK N,oB  
    Mnemonics: 2 yP#:T/z  
    TFRN: Tolerance on curvature in fringes. $LRFG(  
    TTHI: Tolerance on thickness. TTE#7\K~B  
    TSDX: Tolerance on surface decentering in x. jQ`"Op 3  
    TSDY: Tolerance on surface decentering in y.  74Q?%X  
    TSTX: Tolerance on surface tilt in x (degrees). (Z,,H1L  
    TSTY: Tolerance on surface tilt in y (degrees). 6xFZv t  
    TIRR: Tolerance on irregularity (fringes). ~+lC %R  
    TIND: Tolerance on Nd index of refraction. "W+4`A(/l  
    TEDX: Tolerance on element decentering in x. RycEM|51V  
    TEDY: Tolerance on element decentering in y. Zo0&<QWj  
    TETX: Tolerance on element tilt in x (degrees). C}1(@$  
    TETY: Tolerance on element tilt in y (degrees). N'`*#UI+  
    bY>o%LL-  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. >M1/m=a  
    n)K6Z{x  
    WARNING: Boundary constraints on compensators will be ignored. OC>" +  
    e2*^;&|%  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 2d>PN^x  
    Mode                : Sensitivities Ti)n(G9$  
    Sampling            : 2 XW#4C*5?d  
    Nominal Criterion   : 0.54403234 .Nf*Yqs0  
    Test Wavelength     : 0.6328 3?geJlD4  
    MoX* e  
    TRq~n7Y7C  
    Fields: XY Symmetric Angle in degrees 8EE7mEmLH  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Ci*5E$+\  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 x9ws@=[:  
    ~T-.k 7t  
    Sensitivity Analysis: _N]yI0k(  
    hW},%  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| eP2 yU  
    Type                      Value      Criterion        Change          Value      Criterion        Change vB Jva8;Q  
    Fringe tolerance on surface 1 *m"mt  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 A |&EI-In  
    Change in Focus                :      -0.000000                            0.000000 /.?\P#9)  
    Fringe tolerance on surface 2 1Jd:%+T  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 1=D!C lcb  
    Change in Focus                :       0.000000                            0.000000 :qZ^<3+:  
    Fringe tolerance on surface 3 )b7mzDp(  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 =['ijD4TW  
    Change in Focus                :      -0.000000                            0.000000 cnc$^[c  
    Thickness tolerance on surface 1 B 3h<K}  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 dg!sRm1iZ:  
    Change in Focus                :       0.000000                            0.000000 |s^ar8)=)  
    Thickness tolerance on surface 2 Yx%%+c?.   
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 wTW"1M  
    Change in Focus                :       0.000000                           -0.000000 #X8[g_d/  
    Decenter X tolerance on surfaces 1 through 3 4J_%quxO  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 f65Sr"qB3  
    Change in Focus                :       0.000000                            0.000000 'I~dJEW7  
    Decenter Y tolerance on surfaces 1 through 3 H xlw1(zS  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 9C.cz\E  
    Change in Focus                :       0.000000                            0.000000 f LW>-O73  
    Tilt X tolerance on surfaces 1 through 3 (degrees)  @bx2=  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ~4^e a  
    Change in Focus                :       0.000000                            0.000000 |<V{$),k  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ?4Lo"igAA  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 + ND9###  
    Change in Focus                :       0.000000                            0.000000 3q>"#+R.t  
    Decenter X tolerance on surface 1 ; M(}fV]  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 _"bx#B*  
    Change in Focus                :       0.000000                            0.000000 s7e'9Bx  
    Decenter Y tolerance on surface 1 k Mo)4 Xp  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 5Z[ D(z  
    Change in Focus                :       0.000000                            0.000000 qcot T\rq  
    Tilt X tolerance on surface (degrees) 1 1fy{@j(W  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Esjv^* v9-  
    Change in Focus                :       0.000000                            0.000000 F"=MU8  
    Tilt Y tolerance on surface (degrees) 1 LZVO9e]  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 P Cf|^X#B  
    Change in Focus                :       0.000000                            0.000000 m&q;.|W  
    Decenter X tolerance on surface 2 r Lh h  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 |-fx 0y   
    Change in Focus                :       0.000000                            0.000000 xD=D *W  
    Decenter Y tolerance on surface 2 5dF=DCZ  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 a)1,/:7'  
    Change in Focus                :       0.000000                            0.000000 ie!4z34  
    Tilt X tolerance on surface (degrees) 2 ASvPr*q/  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 IMZKlU3  
    Change in Focus                :       0.000000                            0.000000 @_Zx'mTI  
    Tilt Y tolerance on surface (degrees) 2 &J b.OCf  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ~30Wb9eL  
    Change in Focus                :       0.000000                            0.000000 WI6E3,ejB1  
    Decenter X tolerance on surface 3 t}7wR TG  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 rieQ&Jt"  
    Change in Focus                :       0.000000                            0.000000 eFQi K6`i  
    Decenter Y tolerance on surface 3 uFm-HR@4  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 76b7-Nj"  
    Change in Focus                :       0.000000                            0.000000 c)8wO=!  
    Tilt X tolerance on surface (degrees) 3 1,T9HpM  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 mz*z1`\7v\  
    Change in Focus                :       0.000000                            0.000000 8ilbX)O  
    Tilt Y tolerance on surface (degrees) 3 fhmr*E'J  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 }dUC^04  
    Change in Focus                :       0.000000                            0.000000 kA4ei  
    Irregularity of surface 1 in fringes FW DuH`-5  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 6bNW1]rD  
    Change in Focus                :       0.000000                            0.000000 Q*.FUV&;  
    Irregularity of surface 2 in fringes ]eW|}V7A:  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 0EOX@;}  
    Change in Focus                :       0.000000                            0.000000 CD_f[u  
    Irregularity of surface 3 in fringes aS vE  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 #!jRY!2Vt  
    Change in Focus                :       0.000000                            0.000000 Ij1 ]GZ`A(  
    Index tolerance on surface 1 ~8(X@~Tn*  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 N o(f0g.  
    Change in Focus                :       0.000000                            0.000000 w<Cmzkf  
    Index tolerance on surface 2 NE3wui1 V  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 prN(V1O  
    Change in Focus                :       0.000000                           -0.000000 `M ygDG+u  
    ^Nw]'e3  
    Worst offenders: ?(q*U!=  
    Type                      Value      Criterion        Change S=,1} XZ  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 Iv72;ZCh?6  
    TSTY   2             0.20000000     0.35349910    -0.19053324 J&:W4\ m  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 l;*lPRoW,  
    TSTX   2             0.20000000     0.35349910    -0.19053324 k6'#  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 wLSZL  
    TSTY   1             0.20000000     0.42678383    -0.11724851 d7J[.^\  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 cqY.^f.  
    TSTX   1             0.20000000     0.42678383    -0.11724851 6 ]PM!6  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 XDk o{jEJ  
    TSTY   3             0.20000000     0.42861670    -0.11541563 sBtG}Mo)  
    Y@H,Lk  
    Estimated Performance Changes based upon Root-Sum-Square method: } Tr83B|  
    Nominal MTF                 :     0.54403234 B" m:<@ "  
    Estimated change            :    -0.36299231 ~f10ZB_k>'  
    Estimated MTF               :     0.18104003 :.o=F`W  
    T[h}A"yK;  
    Compensator Statistics: xd fvme[  
    Change in back focus: 3B".Gsm)X  
    Minimum            :        -0.000000 0ITA3v8{  
    Maximum            :         0.000000 tH,K\v`f  
    Mean               :        -0.000000 sN1*Zp'(  
    Standard Deviation :         0.000000 f=_?<I{  
    d]ZC8<`w  
    Monte Carlo Analysis: x;FO|fH  
    Number of trials: 20 *OOa)P{^D  
    EO/cW<uV'  
    Initial Statistics: Normal Distribution wYQ1Z  
    Z#Zzi5<  
      Trial       Criterion        Change  ,eeL5V  
          1     0.42804416    -0.11598818 |369@un6  
    Change in Focus                :      -0.400171 wGzXp5 dl  
          2     0.54384387    -0.00018847 xUo)_P\_  
    Change in Focus                :       1.018470 Wytvs*\`  
          3     0.44510003    -0.09893230 m0A@jWgd  
    Change in Focus                :      -0.601922 M-Z6TL  
          4     0.18154684    -0.36248550 ~I\r1Wj;  
    Change in Focus                :       0.920681 im \ YL<  
          5     0.28665820    -0.25737414 ?X_0Iy}1  
    Change in Focus                :       1.253875 Gj7QG IKx  
          6     0.21263372    -0.33139862 2gL[\/s  
    Change in Focus                :      -0.903878 *T>#zR{  
          7     0.40051424    -0.14351809 t66f 7AR  
    Change in Focus                :      -1.354815 I6hhU;)C  
          8     0.48754161    -0.05649072 !v5sWVVR  
    Change in Focus                :       0.215922 GATP  
          9     0.40357468    -0.14045766 @0UwI%.  
    Change in Focus                :       0.281783 RM^?&PM85  
         10     0.26315315    -0.28087919 oj^5G ]_ <  
    Change in Focus                :      -1.048393 }U?gKlLg  
         11     0.26120585    -0.28282649 8 g# Y  
    Change in Focus                :       1.017611 N t>HztXd  
         12     0.24033815    -0.30369419 hDB`t $  
    Change in Focus                :      -0.109292 UOLTCp?M;J  
         13     0.37164046    -0.17239188 ##`;Eh0a  
    Change in Focus                :      -0.692430 F`;TU"pDf  
         14     0.48597489    -0.05805744 GwMUIevO_  
    Change in Focus                :      -0.662040 o^_W$4Fc  
         15     0.21462327    -0.32940907 f=_Bx2ub  
    Change in Focus                :       1.611296 ]O[+c*|w  
         16     0.43378226    -0.11025008 @dE 3  
    Change in Focus                :      -0.640081 q-3J.VLJ5H  
         17     0.39321881    -0.15081353 SA`J.4yn  
    Change in Focus                :       0.914906 Pa +AF  
         18     0.20692530    -0.33710703 v E3{H  
    Change in Focus                :       0.801607 c+E//X|  
         19     0.51374068    -0.03029165 6z p@#vYI  
    Change in Focus                :       0.947293 ;Z!~A"~$>  
         20     0.38013374    -0.16389860 F;?TR[4!k  
    Change in Focus                :       0.667010 1&8j3"  
    PtRj9TT  
    Number of traceable Monte Carlo files generated: 20 uFrJ:l+  
    u,Q_WR-wJ  
    Nominal     0.54403234 s]F?=yEp  
    Best        0.54384387    Trial     2 =0 C l  
    Worst       0.18154684    Trial     4 9LqMQv"xW  
    Mean        0.35770970 OUlxeo/  
    Std Dev     0.11156454 K)9j je  
    V(lK`dY  
    u:AfHZ  
    Compensator Statistics: %67G]?EXB  
    Change in back focus: M]6w^\4j9  
    Minimum            :        -1.354815 R<y  Nv  
    Maximum            :         1.611296 dr,B\.|jC  
    Mean               :         0.161872 vu_>U({. T  
    Standard Deviation :         0.869664 fw1;i  
    xP{HjONu  
    90% >       0.20977951               ~zE 1'  
    80% >       0.22748071               Q8;x9o@p  
    50% >       0.38667627               b[{m>Fa+o#  
    20% >       0.46553746               $n=W2WJ6f  
    10% >       0.50064115                ]/aRc=Gn  
    P|unUW(P  
    End of Run. S4l)TtY  
    dp"<KcP_  
    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 }|Hw0zP.  
    wq:b j=j  
    rt5oRf:wY  
    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 l]a^"4L4`o  
    ILkjz^  
    不吝赐教
     
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    离线sansummer
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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?
    离线sansummer
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 Y h^WTysBn  
    80% >       0.22748071                 <2n'}&F  
    50% >       0.38667627                 o:Ln._bj  
    20% >       0.46553746                 G i$  
    10% >       0.50064115 48lzOG  
    ~ wfoK7T}  
    最后这个数值是MTF值呢,还是MTF的公差? fy9uLl}h  
     =Ov9Kf  
    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???   ^it4z gx@  
    OZ eiH X!  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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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  : _;#9!"&  
    90% >       0.20977951                 s_TD4~ $  
    80% >       0.22748071                 hw*1gm  
    50% >       0.38667627                 (N7O+3+G  
    20% >       0.46553746                 *G\=i A  
    10% >       0.50064115 mLQUcYfR  
    ....... loLKm]yV  
    Xty# vI  
    .ByU  
    这些数值都是MTF值
    离线天地大同
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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   I'?6~Sn3  
    Mode                : Sensitivities 22|"K**3J|  
    Sampling            : 2 -IbbPuRq  
    Nominal Criterion   : 0.54403234 ' Wtf>`  
    Test Wavelength     : 0.6328 jx'2N~$  
    !:dL~n  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
    离线sansummer
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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? ~o i)Lf1  
    -<PC"B  
    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