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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 D@(Y.&_  
    Ncu\;K\N  
    bb6J$NR  
    YoKY&i6r}  
    然后添加了默认公差分析，基本没变 Y.qlY3iBp  
    =M'y& iz-  
    L s=2!  
    <=*xwI&q  
    然后运行分析的结果如下： &z r..i4O  
    c"3 a,&  
    Analysis of Tolerances *1}'ZEaJ  
    I"^ `!8<q  
    File : E:\光学设计资料\zemax练习\f500.ZMX 7  Znr2I  
    Title: 2c.~cNx`q[  
    Date : TUE JUN 21 2011 $g55wGF  
    p-zWfXn!P  
    Units are Millimeters. :mU,g|~55  
    All changes are computed using linear differences. ;Bo{.916  
    t>h<XPJi  
    Paraxial Focus compensation only. wY2#xD  
    ;N4b~k)  
    WARNING: Solves should be removed prior to tolerancing. 3r?Bnf:  
    ,o}!pQ  
    Mnemonics: is%qG?,P  
    TFRN: Tolerance on curvature in fringes. y_$=Pu6H  
    TTHI: Tolerance on thickness. h:3`e`J<h  
    TSDX: Tolerance on surface decentering in x. _'k?9eN`  
    TSDY: Tolerance on surface decentering in y. z./M^7v?  
    TSTX: Tolerance on surface tilt in x (degrees). /I3#WUc;![  
    TSTY: Tolerance on surface tilt in y (degrees). xQa[bvW  
    TIRR: Tolerance on irregularity (fringes). `J^J_s  
    TIND: Tolerance on Nd index of refraction. cjf}yn  
    TEDX: Tolerance on element decentering in x. cy)gN g  
    TEDY: Tolerance on element decentering in y. &>Q_  
    TETX: Tolerance on element tilt in x (degrees). }*m:zD@8$  
    TETY: Tolerance on element tilt in y (degrees). Z<Rz}8s  
    lM C4j  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 2jf-vWV_  
    t i)foam  
    WARNING: Boundary constraints on compensators will be ignored. O^I~d{M 5I  
    IBY3QG  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 9}Tf9>qP>M  
    Mode                : Sensitivities 4w^B&e%  
    Sampling            : 2 [1'`KJ]  
    Nominal Criterion   : 0.54403234 VY$hg  
    Test Wavelength     : 0.6328 2As 4}  
    ]`&EB~K&NY  
    eP-q[U?$n  
    Fields: XY Symmetric Angle in degrees FfN==2:b  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY  &(\z  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 !'Xk=+  
    dRyK'Xr  
    Sensitivity Analysis: 9 kzytx  
    !SIGzj  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| u4NMJnX  
    Type                      Value      Criterion        Change          Value      Criterion        Change S5E mLgnRs  
    Fringe tolerance on surface 1 nI%0u<=d  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 J[;c}  
    Change in Focus                :      -0.000000                            0.000000 A0yRA+  
    Fringe tolerance on surface 2 $BG4M?Y  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 U?d1  
    Change in Focus                :       0.000000                            0.000000 Ob?>zsx  
    Fringe tolerance on surface 3 T5&jpP`M  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 T{bM/?g  
    Change in Focus                :      -0.000000                            0.000000 <DiD8")4  
    Thickness tolerance on surface 1 /yyed{q  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ;RW!l pGjP  
    Change in Focus                :       0.000000                            0.000000 ?7^H1L  
    Thickness tolerance on surface 2 *@l NL=%R  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 /s(/6~D|  
    Change in Focus                :       0.000000                           -0.000000 QP)-O*+AA  
    Decenter X tolerance on surfaces 1 through 3 ,IxAt&kN  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 -*k%'Gr  
    Change in Focus                :       0.000000                            0.000000 (1%u`#5n-N  
    Decenter Y tolerance on surfaces 1 through 3 g4P059  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ,2DKphh  
    Change in Focus                :       0.000000                            0.000000 TS)p2#  
    Tilt X tolerance on surfaces 1 through 3 (degrees) _(3VzI'G  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ($' rV!}  
    Change in Focus                :       0.000000                            0.000000 @P6K`'.0  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) eHi|_3A&*  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 b~  
    Change in Focus                :       0.000000                            0.000000 B cd6 ~  
    Decenter X tolerance on surface 1 EYd`qk 3  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ^6mlE+WY  
    Change in Focus                :       0.000000                            0.000000 aG8}R~wH&  
    Decenter Y tolerance on surface 1 @$gvV]dA  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 G6_Kid}"q  
    Change in Focus                :       0.000000                            0.000000 3/>McZ@OH  
    Tilt X tolerance on surface (degrees) 1 &4sUi K"  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 `UMv#-Y8  
    Change in Focus                :       0.000000                            0.000000 FJKt5}`8  
    Tilt Y tolerance on surface (degrees) 1 c~b[_J)  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ~ d^+yR-  
    Change in Focus                :       0.000000                            0.000000 WZ'8{XY8  
    Decenter X tolerance on surface 2 p@/!+$^{  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 a Umcs!@  
    Change in Focus                :       0.000000                            0.000000 RD_&m?d  
    Decenter Y tolerance on surface 2 XgP7 !  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 U_m<W$"HF  
    Change in Focus                :       0.000000                            0.000000 >,Zjlkh3  
    Tilt X tolerance on surface (degrees) 2 7gfNe kr~W  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 `MlQPLH  
    Change in Focus                :       0.000000                            0.000000 I1BVqIt1i  
    Tilt Y tolerance on surface (degrees) 2 ez&v"J  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 |8 c3%jve  
    Change in Focus                :       0.000000                            0.000000 o"R[#E&Yx  
    Decenter X tolerance on surface 3 n'v[[bmu  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 a[]=*(AZI  
    Change in Focus                :       0.000000                            0.000000 GN?^7kI  
    Decenter Y tolerance on surface 3 di>"\On-  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ?P ,z^  
    Change in Focus                :       0.000000                            0.000000 y/h~oGxy  
    Tilt X tolerance on surface (degrees) 3 z*>"I  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Ovv~ymj  
    Change in Focus                :       0.000000                            0.000000 e3"GC_*#  
    Tilt Y tolerance on surface (degrees) 3 1T!b# x4  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Jm0P~E[n  
    Change in Focus                :       0.000000                            0.000000 QUVwO m  
    Irregularity of surface 1 in fringes c^><^LGb  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Mg W0 ).  
    Change in Focus                :       0.000000                            0.000000 !fZ\GOx  
    Irregularity of surface 2 in fringes U8-#W(tRR  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 *?Nrx=O*  
    Change in Focus                :       0.000000                            0.000000 fchsn*R%-  
    Irregularity of surface 3 in fringes EeG7 %S 5(  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 QxH%4 )?  
    Change in Focus                :       0.000000                            0.000000 E'j>[C:U  
    Index tolerance on surface 1 rE;*MqYt&  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 )."_i64  
    Change in Focus                :       0.000000                            0.000000 YD H!N l  
    Index tolerance on surface 2 qc2j}D0  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 !'wh hi  
    Change in Focus                :       0.000000                           -0.000000 pYa8iQ`6U;  
    q.U` mtS  
    Worst offenders: t,#7F$t  
    Type                      Value      Criterion        Change {mrTpw  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 .LhIB?  
    TSTY   2             0.20000000     0.35349910    -0.19053324 F{0Z  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 VdjS\VYe,  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Qn(2UO!pD  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 bGOOC?[UX  
    TSTY   1             0.20000000     0.42678383    -0.11724851 @X+m,u  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 _VGAh:v  
    TSTX   1             0.20000000     0.42678383    -0.11724851 :m]~o3KRy  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 ?;zu>4f|  
    TSTY   3             0.20000000     0.42861670    -0.11541563 T$%r?p(s  
    aUa.!,_dh  
    Estimated Performance Changes based upon Root-Sum-Square method: c[J?`8  
    Nominal MTF                 :     0.54403234 0^$L{V  
    Estimated change            :    -0.36299231 k\BJs@-  
    Estimated MTF               :     0.18104003 g= ~Y\$&  
    \(2w/~  
    Compensator Statistics: `-fWNHs  
    Change in back focus: 7aRtw:PQn  
    Minimum            :        -0.000000 S "'0l S   
    Maximum            :         0.000000 qmqWMLfC  
    Mean               :        -0.000000 rV84?75( Y  
    Standard Deviation :         0.000000 )12.W=p  
    q;Tdqv!Ju  
    Monte Carlo Analysis: "5 ;fuM1  
    Number of trials: 20 3}dTbr4y  
    WJWi'|C4  
    Initial Statistics: Normal Distribution .7&V@A7  
    uP, iGA  
      Trial       Criterion        Change ${m;x:'  
          1     0.42804416    -0.11598818 q\s"B.(G"  
    Change in Focus                :      -0.400171 |_."U9!Z^  
          2     0.54384387    -0.00018847 >RJjm&M  
    Change in Focus                :       1.018470 -fpe  
          3     0.44510003    -0.09893230 }py)EI,U  
    Change in Focus                :      -0.601922 WX .Ax$fT  
          4     0.18154684    -0.36248550 %"-bG'Yc  
    Change in Focus                :       0.920681 "| Oj!&0  
          5     0.28665820    -0.25737414 m}A|W[p<  
    Change in Focus                :       1.253875 A12EUr5$  
          6     0.21263372    -0.33139862 A,67)li3  
    Change in Focus                :      -0.903878 9gq+,g>E_  
          7     0.40051424    -0.14351809 2[|52+zhc  
    Change in Focus                :      -1.354815 `#HtVI  
          8     0.48754161    -0.05649072 Hb}O/G$a*  
    Change in Focus                :       0.215922 yPY}b_W  
          9     0.40357468    -0.14045766 mi[t1cN)=  
    Change in Focus                :       0.281783 Jq>rA  
         10     0.26315315    -0.28087919 Vu.VH([b]Q  
    Change in Focus                :      -1.048393 GDF/0-/Z  
         11     0.26120585    -0.28282649 M[  {O%!  
    Change in Focus                :       1.017611 "DaE(S&  
         12     0.24033815    -0.30369419 Zt_~Zxn3  
    Change in Focus                :      -0.109292 m`i_O0T  
         13     0.37164046    -0.17239188 P:D;w2'Q  
    Change in Focus                :      -0.692430 UE9RrfdN  
         14     0.48597489    -0.05805744 ;~D$ rT  
    Change in Focus                :      -0.662040 Q g~cYwX  
         15     0.21462327    -0.32940907 7 Tb[sc'  
    Change in Focus                :       1.611296 IiU\}<O  
         16     0.43378226    -0.11025008 {wy{L-X  
    Change in Focus                :      -0.640081 Q,nJz*AJ  
         17     0.39321881    -0.15081353 Y5c,O>T5Y  
    Change in Focus                :       0.914906 T:T`M:C.  
         18     0.20692530    -0.33710703 Emy=q5ryl  
    Change in Focus                :       0.801607 CbGfVdw/c  
         19     0.51374068    -0.03029165 X)e#=w!fi3  
    Change in Focus                :       0.947293 = 6Fpixq>  
         20     0.38013374    -0.16389860 d1P|v( `S9  
    Change in Focus                :       0.667010 1aI&jdJk  
    E1r-$gf_  
    Number of traceable Monte Carlo files generated: 20 vA3wn><  
    O&dBLh!G  
    Nominal     0.54403234 |`ya+/ff+  
    Best        0.54384387    Trial     2 7|5X> yt  
    Worst       0.18154684    Trial     4 g.Tc>?~  
    Mean        0.35770970 :)Pj()Os|  
    Std Dev     0.11156454 +m9ouF  
    +7\d78U  
    i0:1+^3^U  
    Compensator Statistics: 1 |  
    Change in back focus: SJB^dI**/d  
    Minimum            :        -1.354815 ;6eBfMhL  
    Maximum            :         1.611296 /#WvC;B  
    Mean               :         0.161872 @(bg#  
    Standard Deviation :         0.869664 aFaioE#h(  
    _9g-D9  
    90% >       0.20977951               hkb&]XWi[  
    80% >       0.22748071               -MRX@a^1  
    50% >       0.38667627               NbC2N)L4  
    20% >       0.46553746               )I#{\^  
    10% >       0.50064115                qnCjNN  
    ~NZL~p  
    End of Run. ?3lA ogB  
    !&xci})7a  
    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 Ngj&1Ta&[  
    Eug RC  
    7Db}bDU1 |  
    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 <UF0Xc&X'  
    Xp] jF^5  
    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                 ^*i0~_  
    80% >       0.22748071                 zz[fkH3  
    50% >       0.38667627                 >s 6ye  
    20% >       0.46553746                 &e6UEG  
    10% >       0.50064115 UOsK(mB  
    DI8<0.L  
    最后这个数值是MTF值呢，还是MTF的公差？ q\}+]|nGs  
    H<[~V0=  
    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？？？   `vMhrn  
    5VP0Xa ~  
    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  : OALNZKP  
    90% >       0.20977951                 u1$6:"2@5k  
    80% >       0.22748071                 )&c#?wx'w  
    50% >       0.38667627                 )"pvF8JR%3  
    20% >       0.46553746                 ^;RK-)  
    10% >       0.50064115 m4 (p MrJ  
    ....... O`9c!_lis  
    `SFeln{1B  
    >MHlrSH2  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   TU0-L35P1  
    Mode                : Sensitivities y ("WnVI  
    Sampling            : 2 Io]FDPN  
    Nominal Criterion   : 0.54403234 P35DVKS  
    Test Wavelength     : 0.6328 f1MRmp-f'  
    \b"rf697 ,  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
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    只看该作者 6楼 发表于: 2011-06-24
    回 5楼(天地大同) 的帖子
    谢谢。您说的“波长632.8nm 时 mtf 是 0.54403234  没达到0.6”这是一个评价标准吧？ VI2lw E3  
    ^3$l!>me  
    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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