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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 Y*B}^!k6  
    N 0&h5  
    EM;]dLh  
    =?0o5|u]  
    然后添加了默认公差分析,基本没变 -`FTWH  
    hf8 =r5j=  
    m(XcPb  
    M8:gHjwsx  
    然后运行分析的结果如下: kiZA$:V8  
    tlQ3 BKp  
    Analysis of Tolerances \O^b|0zc  
    6|rqsk  
    File : E:\光学设计资料\zemax练习\f500.ZMX T Jp(  
    Title: ZVR0Kzu?Ra  
    Date : TUE JUN 21 2011 D#1'#di*t  
     o-_0  
    Units are Millimeters. h$G&4_O  
    All changes are computed using linear differences. 2 Do^N5y  
    ShxB!/s  
    Paraxial Focus compensation only. =sPY+~<o  
    Wb68")$  
    WARNING: Solves should be removed prior to tolerancing. [l:3F<M  
    T`Sp!  
    Mnemonics: e$45OL  
    TFRN: Tolerance on curvature in fringes. q4|TwRx~  
    TTHI: Tolerance on thickness. 8sx\b  
    TSDX: Tolerance on surface decentering in x. r,A750P^  
    TSDY: Tolerance on surface decentering in y. ABSA le  
    TSTX: Tolerance on surface tilt in x (degrees). ;KWR/?ec  
    TSTY: Tolerance on surface tilt in y (degrees). T""X~+{Z@  
    TIRR: Tolerance on irregularity (fringes). gk"S`1>  
    TIND: Tolerance on Nd index of refraction. ^g$k4  
    TEDX: Tolerance on element decentering in x. [kMXr'TyPX  
    TEDY: Tolerance on element decentering in y. , pq<.?&E  
    TETX: Tolerance on element tilt in x (degrees). "gfy6m  
    TETY: Tolerance on element tilt in y (degrees). \RnGKQ"4  
    Bi ]`e_(}  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. |)} F}~&  
    J@=1zL  
    WARNING: Boundary constraints on compensators will be ignored. sT?Qlj'Zd  
    ]m{;yOQdsC  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Y [0 S  
    Mode                : Sensitivities C=t:0.:PJ  
    Sampling            : 2 u 3wF)B{  
    Nominal Criterion   : 0.54403234 /x"gpKwsB  
    Test Wavelength     : 0.6328 qN1(mxa.?  
    gz;().{  
    :=UiEDN@  
    Fields: XY Symmetric Angle in degrees no?TEXp*  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY @sO*O4os>  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 72GXgah  
    f9cS^v_:  
    Sensitivity Analysis: >r2m1}6g"  
    36s[hg  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| is}o5\JEL  
    Type                      Value      Criterion        Change          Value      Criterion        Change &,4^LFZ W  
    Fringe tolerance on surface 1 IvTtQq  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 $h0]  
    Change in Focus                :      -0.000000                            0.000000 =#[_8)q  
    Fringe tolerance on surface 2 YQG[8I  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ]F r+cP  
    Change in Focus                :       0.000000                            0.000000 N'+d1  
    Fringe tolerance on surface 3 y@ J\h8_  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 sZ{Kl\1@  
    Change in Focus                :      -0.000000                            0.000000 X's-i!  
    Thickness tolerance on surface 1 2-ev7:  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 E j@M\  
    Change in Focus                :       0.000000                            0.000000 w6y?D<  
    Thickness tolerance on surface 2 `<zaxO  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 f&bY=$iff  
    Change in Focus                :       0.000000                           -0.000000 j01.`G7Q  
    Decenter X tolerance on surfaces 1 through 3 [-f0s;F1%  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 'm# -)R!  
    Change in Focus                :       0.000000                            0.000000 >|KfO>  
    Decenter Y tolerance on surfaces 1 through 3 %@'9<i8o  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 *YZ' Uy?  
    Change in Focus                :       0.000000                            0.000000 AMA :hQ  
    Tilt X tolerance on surfaces 1 through 3 (degrees) - o$S=  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 0|9(oP/:  
    Change in Focus                :       0.000000                            0.000000 c5>&~^~>Tx  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) "5Bga jrB  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 :!;BOCTYI  
    Change in Focus                :       0.000000                            0.000000 %4Ylq|d  
    Decenter X tolerance on surface 1 1wmS?  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 z kYl IUD  
    Change in Focus                :       0.000000                            0.000000 <~!7?ak  
    Decenter Y tolerance on surface 1 ~j" aJ /  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 jb$sIZ%i  
    Change in Focus                :       0.000000                            0.000000 t(VG#}  
    Tilt X tolerance on surface (degrees) 1 AGQCk*dm  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 fz31di9$  
    Change in Focus                :       0.000000                            0.000000 9-eYCg7C|  
    Tilt Y tolerance on surface (degrees) 1 1 h|cr_  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Y=sRVypJ  
    Change in Focus                :       0.000000                            0.000000  HUr;ysw  
    Decenter X tolerance on surface 2 b[$%Wg  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Vj_(55WQ  
    Change in Focus                :       0.000000                            0.000000 8s-RNA>7^  
    Decenter Y tolerance on surface 2 z[b,:G  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 d{0b*l%  
    Change in Focus                :       0.000000                            0.000000 YiB]}/  
    Tilt X tolerance on surface (degrees) 2 w&f8AY)#]4  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 s@OCj0'l  
    Change in Focus                :       0.000000                            0.000000 qEX2K^y'4"  
    Tilt Y tolerance on surface (degrees) 2 73P=<3  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 L^yQb4$&M  
    Change in Focus                :       0.000000                            0.000000 FVMR9~&+  
    Decenter X tolerance on surface 3 18z{d9'F   
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 d?Gf T$1  
    Change in Focus                :       0.000000                            0.000000 YYr &Jc j  
    Decenter Y tolerance on surface 3 kX zm  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 9xP{#Qa  
    Change in Focus                :       0.000000                            0.000000 5s8S;Pb]<  
    Tilt X tolerance on surface (degrees) 3 A3*ti!X<6  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 #`RY KQwB  
    Change in Focus                :       0.000000                            0.000000 8jd<|nYnfc  
    Tilt Y tolerance on surface (degrees) 3 B~^MhX +j  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 gZuk(  
    Change in Focus                :       0.000000                            0.000000 VQU[5C  
    Irregularity of surface 1 in fringes g4<%t,(88E  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 %P0dY:L~  
    Change in Focus                :       0.000000                            0.000000 JiEcPii  
    Irregularity of surface 2 in fringes #B8`qFpQC  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 d#Sc4xuf  
    Change in Focus                :       0.000000                            0.000000 q@F"fjWBr  
    Irregularity of surface 3 in fringes [6K2V:6:  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 |Yh-`~~A"  
    Change in Focus                :       0.000000                            0.000000 hhlQ!WV2  
    Index tolerance on surface 1 q -M&f@Il  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 OOQf a#~k  
    Change in Focus                :       0.000000                            0.000000 {S%)GvrT  
    Index tolerance on surface 2 il<D e]G  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 _s><>LH~  
    Change in Focus                :       0.000000                           -0.000000 '!Ps4ZTn_  
    `)\_  
    Worst offenders: Wv_5sPqLW  
    Type                      Value      Criterion        Change M$ep.<Z1|  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 7Ro7/PT (  
    TSTY   2             0.20000000     0.35349910    -0.19053324 g-E!*K  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 KSIH1E  
    TSTX   2             0.20000000     0.35349910    -0.19053324 VH4P|w[YF  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 |xZDc6HDW  
    TSTY   1             0.20000000     0.42678383    -0.11724851 J_}&Btb)e  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 'G>Ejh@t  
    TSTX   1             0.20000000     0.42678383    -0.11724851 L Tp5T|O  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ?=jmyDXH!  
    TSTY   3             0.20000000     0.42861670    -0.11541563 VD/Wl2DK  
    B/q/sC  
    Estimated Performance Changes based upon Root-Sum-Square method: GsqR8n=  
    Nominal MTF                 :     0.54403234 @I\Z2-J  
    Estimated change            :    -0.36299231 L$zT`1Hy  
    Estimated MTF               :     0.18104003 g-pDk*|I,Q  
    cCFSPT2fq[  
    Compensator Statistics: r=n|MT^O  
    Change in back focus: %2^C  
    Minimum            :        -0.000000 2n?\tOm(V  
    Maximum            :         0.000000 1@yXVD/  
    Mean               :        -0.000000 _Ta9rDSP]  
    Standard Deviation :         0.000000 to[EA6J8l  
    HQ7-,!XO  
    Monte Carlo Analysis: j$T2ff6  
    Number of trials: 20 MVjc.^  
    LnZ*,>1 Z  
    Initial Statistics: Normal Distribution Tr)a6Cf  
    d%1S6eYa'  
      Trial       Criterion        Change w!:u|  
          1     0.42804416    -0.11598818 {-^>) iJqt  
    Change in Focus                :      -0.400171 1]A%lud4  
          2     0.54384387    -0.00018847 -4,qAnuMx  
    Change in Focus                :       1.018470 4v3y3  
          3     0.44510003    -0.09893230 {5.,gb@6  
    Change in Focus                :      -0.601922 j_&/^-;e  
          4     0.18154684    -0.36248550 cmt3ceCb  
    Change in Focus                :       0.920681 9V?MJZ@aG  
          5     0.28665820    -0.25737414 c1wgb8  
    Change in Focus                :       1.253875 L}nj#z4g  
          6     0.21263372    -0.33139862 2c5>0f  
    Change in Focus                :      -0.903878 4I"QT(;  
          7     0.40051424    -0.14351809 cy)L%`(7  
    Change in Focus                :      -1.354815 & ?/h5<  
          8     0.48754161    -0.05649072 gwThhwR  
    Change in Focus                :       0.215922 }tft@,dIC  
          9     0.40357468    -0.14045766 2-o,4EfHVO  
    Change in Focus                :       0.281783 P{(m:`N  
         10     0.26315315    -0.28087919 \b.2f+;3  
    Change in Focus                :      -1.048393 #Q 2$v;  
         11     0.26120585    -0.28282649 ^>GL<1 1  
    Change in Focus                :       1.017611 PHDKx+$  
         12     0.24033815    -0.30369419 1dfA 8=L,s  
    Change in Focus                :      -0.109292 =)Ew6} W6  
         13     0.37164046    -0.17239188 GK95=?f~8;  
    Change in Focus                :      -0.692430 F5:*;E;$  
         14     0.48597489    -0.05805744 m{pL< g^M  
    Change in Focus                :      -0.662040 g.DgJX&i  
         15     0.21462327    -0.32940907 CEYHD?9k8  
    Change in Focus                :       1.611296 XS9k&~)*  
         16     0.43378226    -0.11025008 uAzV a!)  
    Change in Focus                :      -0.640081 n+zXt?{u  
         17     0.39321881    -0.15081353 BRoi`.b:  
    Change in Focus                :       0.914906 =_%:9FnQ0  
         18     0.20692530    -0.33710703 BTjF^&`  
    Change in Focus                :       0.801607 w#Nn(!VR  
         19     0.51374068    -0.03029165 +;Cq>1x,  
    Change in Focus                :       0.947293 6 Y&OG>_\  
         20     0.38013374    -0.16389860 <FS/'[P  
    Change in Focus                :       0.667010 WRVKh  
    :U ?P~HI  
    Number of traceable Monte Carlo files generated: 20 jt3s;U*  
    S wC,=S  
    Nominal     0.54403234 En5Bsz !  
    Best        0.54384387    Trial     2 L2{tof  
    Worst       0.18154684    Trial     4 Mk@_uPm  
    Mean        0.35770970 1(q!.lPc  
    Std Dev     0.11156454 2(\>PN-  
    T:; e73  
    htM5Nm[g  
    Compensator Statistics: 5? c4aAn  
    Change in back focus: U%gP2]t%cs  
    Minimum            :        -1.354815 J4`08,  
    Maximum            :         1.611296 >/e#Z h  
    Mean               :         0.161872 ]YevO(  
    Standard Deviation :         0.869664 \VtCkb  
    N:L<ySJ7  
    90% >       0.20977951               N_C\L2  
    80% >       0.22748071               O;H/15j:sK  
    50% >       0.38667627               v#-%_V>ph  
    20% >       0.46553746               l*nS gUg  
    10% >       0.50064115                Oo7n_h1  
    @Z3b^G[  
    End of Run. Yo7ctwzdH;  
    f$2lq4P{  
    这就有了些疑问,为什么我选择的补偿器是近轴焦点,而分析结果近轴焦点都不变化??应该是变得。另外最后的蒙特卡洛分析,只有10%的大于0.5(我用的是MTF作为评价方式),可是我设计的MTF如图 ),M8W15  
    t$\]6RU  
    ]~ec] Y  
    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 #7Qn\C2  
    Cc!n`%qc  
    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                 Ma{|+\Q.Z  
    80% >       0.22748071                 ](T*f'LN  
    50% >       0.38667627                 q=96Ci_a  
    20% >       0.46553746                 $]Fe9E?   
    10% >       0.50064115 >TL0hBaaR  
    B'~.>, fg  
    最后这个数值是MTF值呢,还是MTF的公差? N|7._AR2  
    D}3E1`)W  
    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???   Cs*u{O  
    ]^ j)4us  
    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  : xJZbax[  
    90% >       0.20977951                 % ]  
    80% >       0.22748071                 Af*^u|#  
    50% >       0.38667627                 LI(Wu6*Y  
    20% >       0.46553746                 v\f 41M7D  
    10% >       0.50064115 sFB; /*C  
    ....... 7?cZ9^z`w  
    WvN5IHo 8i  
    *S{%+1F  
    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   0y|}}92:  
    Mode                : Sensitivities SAXjB;VH6  
    Sampling            : 2 rWSw1(sAA  
    Nominal Criterion   : 0.54403234 }&;0:hw%  
    Test Wavelength     : 0.6328 [)9bR1wh  
    nvpdu)q<  
    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? UHweV:(|T  
    K3'`!Ka*  
    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
    离线sansummer
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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