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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 71k!k&Im  
    38V $<w  
    d'N(w7-Y  
    vh9kwJyT  
    然后添加了默认公差分析,基本没变 x !#Ma  
    90  
    I!|y;mh:it  
    cPA~eZbX  
    然后运行分析的结果如下: JwN}Jm  
    R4#;<)  
    Analysis of Tolerances nwa\Lrh  
    >:w?qEaE  
    File : E:\光学设计资料\zemax练习\f500.ZMX XAjd %Xv<  
    Title: d u.HSXK  
    Date : TUE JUN 21 2011 (w5u*hx  
    {c v;w  
    Units are Millimeters. K(-G: |  
    All changes are computed using linear differences. %/{IssCR7  
    @Ufa -h5"(  
    Paraxial Focus compensation only. VKq0 <+M  
    bWGyLo,  
    WARNING: Solves should be removed prior to tolerancing. _v1bTg"?  
    (\Rwf}gyR  
    Mnemonics: Xtuhcdzu[  
    TFRN: Tolerance on curvature in fringes. ??|d=4g\  
    TTHI: Tolerance on thickness. R^jlEt\&P  
    TSDX: Tolerance on surface decentering in x. *hv=~A $q  
    TSDY: Tolerance on surface decentering in y. 9 b?i G  
    TSTX: Tolerance on surface tilt in x (degrees). f:_=5e +  
    TSTY: Tolerance on surface tilt in y (degrees). l\K%  
    TIRR: Tolerance on irregularity (fringes). *e(:["v  
    TIND: Tolerance on Nd index of refraction. Of1IdE6~  
    TEDX: Tolerance on element decentering in x. ;):8yBMk  
    TEDY: Tolerance on element decentering in y. lr9=OlH  
    TETX: Tolerance on element tilt in x (degrees). z[WC7hvU  
    TETY: Tolerance on element tilt in y (degrees). IkSX\*  
    {F;,7Kn+l  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ^dFh g_GhF  
    gsW=3m&`  
    WARNING: Boundary constraints on compensators will be ignored. wY' "ab  
    XxmJP5  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm @)9REA(U  
    Mode                : Sensitivities 5gO /-Zj  
    Sampling            : 2 JzHqNUn*M  
    Nominal Criterion   : 0.54403234 fp9rO}##  
    Test Wavelength     : 0.6328 =YWT|%^uX  
    zx ct(  
    G1kDM.L  
    Fields: XY Symmetric Angle in degrees 9OPK4-  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY }$^]dn@  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 $8jaapNm@  
    a`DWpc~  
    Sensitivity Analysis: P;j&kuW|zL  
    u@AI&[Z  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| {?w"hjy  
    Type                      Value      Criterion        Change          Value      Criterion        Change 7*+Km'=M  
    Fringe tolerance on surface 1 S  <2}8D  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 cN62M=**  
    Change in Focus                :      -0.000000                            0.000000 L_E^}^1!  
    Fringe tolerance on surface 2 +H41]W6  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 <#zwKTmK1  
    Change in Focus                :       0.000000                            0.000000 :M@Mmp Ph  
    Fringe tolerance on surface 3 #]@9qPyn  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 NPS .6qY  
    Change in Focus                :      -0.000000                            0.000000 Kl2}o|b   
    Thickness tolerance on surface 1 Tj Mb>w9  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 /j11,O?72  
    Change in Focus                :       0.000000                            0.000000 PXa5g5 !  
    Thickness tolerance on surface 2 A_@I_V$  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 * nLIXnm  
    Change in Focus                :       0.000000                           -0.000000 {W-5:~?"  
    Decenter X tolerance on surfaces 1 through 3 -<|Y1PQ  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 q1H~ |1  
    Change in Focus                :       0.000000                            0.000000 :MK=h;5Z  
    Decenter Y tolerance on surfaces 1 through 3 R_7 6W&  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 i[PvDv"n  
    Change in Focus                :       0.000000                            0.000000 o\&~CW~@~  
    Tilt X tolerance on surfaces 1 through 3 (degrees) C9o$9 l+B  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 WPtMds4  
    Change in Focus                :       0.000000                            0.000000 Og=[4?Kpk  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) {wcO[bN  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 J6DnPaw-G  
    Change in Focus                :       0.000000                            0.000000 FtN}]@F  
    Decenter X tolerance on surface 1 :"VujvFX  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 6eM6[  
    Change in Focus                :       0.000000                            0.000000 z* RSMfRW  
    Decenter Y tolerance on surface 1 c!mG1lwD.  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 <8f(eP\*F  
    Change in Focus                :       0.000000                            0.000000 >'N!dM.+9  
    Tilt X tolerance on surface (degrees) 1 {H+?z<BF<  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 y86))  
    Change in Focus                :       0.000000                            0.000000 ("OAPr\2dw  
    Tilt Y tolerance on surface (degrees) 1 Ey'J]KVW  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 I'dj.  
    Change in Focus                :       0.000000                            0.000000 <>]1Y$^Y  
    Decenter X tolerance on surface 2 _AprkI_  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 8`*`nQhWa  
    Change in Focus                :       0.000000                            0.000000 ujx@@N  
    Decenter Y tolerance on surface 2 V`[P4k+b   
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 kff ZElV  
    Change in Focus                :       0.000000                            0.000000 ,7<DGI_y  
    Tilt X tolerance on surface (degrees) 2 vGMJ^q  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 -3` "E%9  
    Change in Focus                :       0.000000                            0.000000 _|X7 n~  
    Tilt Y tolerance on surface (degrees) 2 {M [~E|@D  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 R5~gH6K|  
    Change in Focus                :       0.000000                            0.000000 .9OFryo  
    Decenter X tolerance on surface 3 #sZIDn J#  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 7lR<@$q  
    Change in Focus                :       0.000000                            0.000000 JD ]OIh  
    Decenter Y tolerance on surface 3 2 Kl a8  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 \"'\MA  
    Change in Focus                :       0.000000                            0.000000 b~*i91)\  
    Tilt X tolerance on surface (degrees) 3 qi&D+~Gv!  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ZjS(ad*.2  
    Change in Focus                :       0.000000                            0.000000 srK53vKMHW  
    Tilt Y tolerance on surface (degrees) 3 IM=+3W;ak  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 x#mtS-sw2Q  
    Change in Focus                :       0.000000                            0.000000 )&,K94  
    Irregularity of surface 1 in fringes N xFUO0O3  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 1[s0Lz  
    Change in Focus                :       0.000000                            0.000000 g_vm&~U/'  
    Irregularity of surface 2 in fringes Tm_8<$ 7  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 \_ 9rr6^ "  
    Change in Focus                :       0.000000                            0.000000 m6i%DE  
    Irregularity of surface 3 in fringes pv&^D,H,  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 &\^rQi/tf  
    Change in Focus                :       0.000000                            0.000000 3fp> 4;ym'  
    Index tolerance on surface 1  HxIoA  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 3cixQzb}u  
    Change in Focus                :       0.000000                            0.000000 nvt$F%+  
    Index tolerance on surface 2 TF\sP8>V  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 W Y:s gG  
    Change in Focus                :       0.000000                           -0.000000 "r..  
    :6D0j  
    Worst offenders: Y@%`ZPJ  
    Type                      Value      Criterion        Change K &dT(U  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 NAJVr}4f  
    TSTY   2             0.20000000     0.35349910    -0.19053324 h/K@IA d  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 }Eh*xOta  
    TSTX   2             0.20000000     0.35349910    -0.19053324 -zKxf@"  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 =EpJZt  
    TSTY   1             0.20000000     0.42678383    -0.11724851 7$7n71o  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 ?Ht=[l=  
    TSTX   1             0.20000000     0.42678383    -0.11724851 \|t{e8}  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 7W|Zq6p i  
    TSTY   3             0.20000000     0.42861670    -0.11541563 smup,RNZRX  
    f{ ^:3"i  
    Estimated Performance Changes based upon Root-Sum-Square method: ]Ik%#l.G_  
    Nominal MTF                 :     0.54403234 0 iR R{a<  
    Estimated change            :    -0.36299231 Qqq <e  
    Estimated MTF               :     0.18104003 V!&P(YO:  
    si(cOCj/  
    Compensator Statistics: g5Td("& n  
    Change in back focus: 3sbK7,4  
    Minimum            :        -0.000000 n8u*JeN  
    Maximum            :         0.000000 3?`"  
    Mean               :        -0.000000 7&+Ys  
    Standard Deviation :         0.000000 Jhy(x1%  
    pbLGe'  
    Monte Carlo Analysis: " U8S81'  
    Number of trials: 20 ; )llt G  
    af'@h:  
    Initial Statistics: Normal Distribution m@\ZHbq  
    ,S!w'0k|n  
      Trial       Criterion        Change Gx'TkU=  
          1     0.42804416    -0.11598818 l r~gG3   
    Change in Focus                :      -0.400171 @;Y~frT  
          2     0.54384387    -0.00018847 o`6|ba  
    Change in Focus                :       1.018470 cj g.lzY H  
          3     0.44510003    -0.09893230 Vz"u>BP3~  
    Change in Focus                :      -0.601922 /;oqf4MF  
          4     0.18154684    -0.36248550 8\Hr5FqB(  
    Change in Focus                :       0.920681 ST;t, D:  
          5     0.28665820    -0.25737414 !#}7{  
    Change in Focus                :       1.253875 wa:0X)KC?  
          6     0.21263372    -0.33139862 1*UN sEr  
    Change in Focus                :      -0.903878 4!%F\c46  
          7     0.40051424    -0.14351809 d8OL!Rk  
    Change in Focus                :      -1.354815 Y7SacRO  
          8     0.48754161    -0.05649072 DWm SC}{.  
    Change in Focus                :       0.215922 XUmR{A  
          9     0.40357468    -0.14045766 d,9`<1{9  
    Change in Focus                :       0.281783 >EP(~G3u  
         10     0.26315315    -0.28087919 |B^G:7c  
    Change in Focus                :      -1.048393 E\th%q,mG  
         11     0.26120585    -0.28282649 lZWX7FO'  
    Change in Focus                :       1.017611 L*]0"E  
         12     0.24033815    -0.30369419 vAi$ [p*im  
    Change in Focus                :      -0.109292 P8I*dvu _  
         13     0.37164046    -0.17239188 >/^#Drwb!i  
    Change in Focus                :      -0.692430 \40 YGFO  
         14     0.48597489    -0.05805744 c/aup  
    Change in Focus                :      -0.662040 0rE(p2  
         15     0.21462327    -0.32940907 )/|6'L-2  
    Change in Focus                :       1.611296 Vrp[r *V@E  
         16     0.43378226    -0.11025008 g^~Kze  
    Change in Focus                :      -0.640081 uaw <  
         17     0.39321881    -0.15081353 W?XizTW  
    Change in Focus                :       0.914906 7r 0,> 3"  
         18     0.20692530    -0.33710703 z" QJhCh7  
    Change in Focus                :       0.801607 ig_2={Q@  
         19     0.51374068    -0.03029165 11UB4CA  
    Change in Focus                :       0.947293 kXc25y'blP  
         20     0.38013374    -0.16389860 EKZVF`L  
    Change in Focus                :       0.667010 Z|* !y]We  
    vkcRm`.  
    Number of traceable Monte Carlo files generated: 20 n(vDytrj;  
    \2kPq>hu  
    Nominal     0.54403234 B'weok  
    Best        0.54384387    Trial     2 !GK$[9  
    Worst       0.18154684    Trial     4 r\M9_s8  
    Mean        0.35770970 ]v29 Rx  
    Std Dev     0.11156454 " I+p  
    =f7r69I"  
    ,mFsM!|  
    Compensator Statistics: ;4#D,zlO^  
    Change in back focus: 3,eIB(  
    Minimum            :        -1.354815 [L~@uAMw:  
    Maximum            :         1.611296 0$P/jt  
    Mean               :         0.161872 #kmh:P  
    Standard Deviation :         0.869664 lU2c_4  
    d- E4~)Qy  
    90% >       0.20977951               oC |WBS  
    80% >       0.22748071               E]} n(  
    50% >       0.38667627               C>QIrZu  
    20% >       0.46553746               &KC!*}<tx  
    10% >       0.50064115                SpSnoVI  
    {]}s#vvy  
    End of Run. rOfK~g,X  
    W WG /k17  
    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 T-" I9kM  
    jE/oA<^  
    !1sU>Xb4J  
    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 -9Ws=r0R  
    wts:65~  
    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                 15H6:_+=0  
    80% >       0.22748071                 ~Pf5ORoe  
    50% >       0.38667627                 `)>7)={  
    20% >       0.46553746                 6vy7l(%  
    10% >       0.50064115 x5si70BKC/  
    %@J1]E;  
    最后这个数值是MTF值呢,还是MTF的公差? ]F*3"y?)2  
    i76 Yo5  
    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???   c+' =hR[  
    oR#:Nt 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  : dWRrG-'  
    90% >       0.20977951                 7YIK9edP  
    80% >       0.22748071                 M~T.n)x2  
    50% >       0.38667627                 {==pZpyyh  
    20% >       0.46553746                 i^z`"3#LE  
    10% >       0.50064115 B)SLG]72f  
    ....... }qPhx6nP  
    j0-McLc  
    x<(b|2qf  
    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   Sq]pQ8  
    Mode                : Sensitivities <_S@6 ?  
    Sampling            : 2 %"3 )TN4  
    Nominal Criterion   : 0.54403234 H. ,;-  
    Test Wavelength     : 0.6328 |  FM }  
    #} ,x @]p  
    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? &]p}+{ (>  
    8^ep/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?
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    恩,多多尝试