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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 >r !|sC  
    m6w].-D8  
    C#Na&m  
    \SB c;  
    然后添加了默认公差分析，基本没变 INJEsz  
    HhvdqvIEG  
    7eAX*Kgt<_  
    Eea*s'  
    然后运行分析的结果如下： sVOyT*GY  
    )r jiY%F$  
    Analysis of Tolerances _no*k?o *  
    ^zQ/mo,Z  
    File : E:\光学设计资料\zemax练习\f500.ZMX oC0qG[yp9S  
    Title: V6@o]*  
    Date : TUE JUN 21 2011 fTK3,s1=  
    UWd=!h^dt  
    Units are Millimeters. uC(V  
    All changes are computed using linear differences. wY[+ZT  
    PamO8^!G  
    Paraxial Focus compensation only. oU.R2\Q  
    toBHkiuD  
    WARNING: Solves should be removed prior to tolerancing. ~kEI4}O  
    2QyV%wz  
    Mnemonics: ` 2V19 s]  
    TFRN: Tolerance on curvature in fringes. xD~5UER  
    TTHI: Tolerance on thickness. 8~@c)Z;  
    TSDX: Tolerance on surface decentering in x. [q8 P~l  
    TSDY: Tolerance on surface decentering in y. hYG6 pTCb  
    TSTX: Tolerance on surface tilt in x (degrees). a6)BqlJ  
    TSTY: Tolerance on surface tilt in y (degrees). Ezd_`_@R  
    TIRR: Tolerance on irregularity (fringes). <^5Z:n!q  
    TIND: Tolerance on Nd index of refraction. lww!-(<ww  
    TEDX: Tolerance on element decentering in x. CDK 5  
    TEDY: Tolerance on element decentering in y. l*d(;AR  
    TETX: Tolerance on element tilt in x (degrees). ~d|A!S`  
    TETY: Tolerance on element tilt in y (degrees). Nh_Mz;ITuu  
    "hH.#5j  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. /rnu<Q#iH  
    j i7[nY  
    WARNING: Boundary constraints on compensators will be ignored. V{/?FO?E  
    Z8K?  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm wsI`fO^A8  
    Mode                : Sensitivities 2fn&#kw/  
    Sampling            : 2 pZqq]mHK  
    Nominal Criterion   : 0.54403234 3z{?_;bR  
    Test Wavelength     : 0.6328 s %j_H  
    nxnv,AZG  
    q_A!'sm@)  
    Fields: XY Symmetric Angle in degrees Z`ID+  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY / F4zg3  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 MOQ*]fV:  
    dxMOn  
    Sensitivity Analysis: R;uvkg[o  
    >UiYL}'br6  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| N4F.Y"R$(  
    Type                      Value      Criterion        Change          Value      Criterion        Change cPyE 6\lN  
    Fringe tolerance on surface 1 IP xiV]c  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 Vc&! OE  
    Change in Focus                :      -0.000000                            0.000000 K*K,}W&}  
    Fringe tolerance on surface 2 G\2 CR*  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230  mHdA2  
    Change in Focus                :       0.000000                            0.000000 E7j(QO f  
    Fringe tolerance on surface 3 [9evz}X  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 C~,a!qY  
    Change in Focus                :      -0.000000                            0.000000 0l)~i' '  
    Thickness tolerance on surface 1 #Z?A2r!1  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 {FeDvhv  
    Change in Focus                :       0.000000                            0.000000 4&<oFW\r  
    Thickness tolerance on surface 2 N{9v1`B  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 U)fc*s  
    Change in Focus                :       0.000000                           -0.000000 <\r T%f}3^  
    Decenter X tolerance on surfaces 1 through 3 xHv ZV<#  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 :}'=`wa  
    Change in Focus                :       0.000000                            0.000000 kCWV r  
    Decenter Y tolerance on surfaces 1 through 3 +%yfcyZ.  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 % ?0:vn  
    Change in Focus                :       0.000000                            0.000000 g:g\>@Umo  
    Tilt X tolerance on surfaces 1 through 3 (degrees) %(3|R@G.  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 FtP0krO(  
    Change in Focus                :       0.000000                            0.000000 ?~BC#B\>o  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) DR5\45v  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 kbX8$xTM  
    Change in Focus                :       0.000000                            0.000000 _mqL8ho  
    Decenter X tolerance on surface 1 lA| 5E?  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 V,lOt4b  
    Change in Focus                :       0.000000                            0.000000 Z]>O+  
    Decenter Y tolerance on surface 1 xgVeN["  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 &#{Z( h.de  
    Change in Focus                :       0.000000                            0.000000 ]#)()6)2v  
    Tilt X tolerance on surface (degrees) 1 _<n~n]%  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 XRM_x:+]  
    Change in Focus                :       0.000000                            0.000000 ;w{tv($$  
    Tilt Y tolerance on surface (degrees) 1 lk/n}bx  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 #^u$  
    Change in Focus                :       0.000000                            0.000000 s Ep"D+f  
    Decenter X tolerance on surface 2 (9''MlGd%  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 2Q/x@aT,h  
    Change in Focus                :       0.000000                            0.000000 M'?,] an  
    Decenter Y tolerance on surface 2 2V- 16Q'%  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 >c1qpk/  
    Change in Focus                :       0.000000                            0.000000 GFj{K  
    Tilt X tolerance on surface (degrees) 2 |7'df&CA  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 YqhAZp<  
    Change in Focus                :       0.000000                            0.000000 mitHT :%r2  
    Tilt Y tolerance on surface (degrees) 2 9&-dTayIz  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 nsu@h  
    Change in Focus                :       0.000000                            0.000000 ^bGNq X  
    Decenter X tolerance on surface 3 1{)5<!9!l  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 :%l TU  
    Change in Focus                :       0.000000                            0.000000 gh/EU/~d  
    Decenter Y tolerance on surface 3 F+YZE[h%  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ~qiJR`Jj  
    Change in Focus                :       0.000000                            0.000000 [<Mx2<8f  
    Tilt X tolerance on surface (degrees) 3 ,Xu-@br{  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 .[]r}[lU  
    Change in Focus                :       0.000000                            0.000000 Go5J%&E9  
    Tilt Y tolerance on surface (degrees) 3 )Kc<j!8-[  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ((YMVe  
    Change in Focus                :       0.000000                            0.000000 wcrCEX=I>{  
    Irregularity of surface 1 in fringes ,;EIh}  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 (!ux+K  
    Change in Focus                :       0.000000                            0.000000 b o6d)Q  
    Irregularity of surface 2 in fringes 3 ]5^r}  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 b.2aHu( 3  
    Change in Focus                :       0.000000                            0.000000 MU`1LHg  
    Irregularity of surface 3 in fringes t|w_i-&b,  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 O*hDbM2QQw  
    Change in Focus                :       0.000000                            0.000000 <wk!hTm W  
    Index tolerance on surface 1 hi_NOx  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 k$4y9{  
    Change in Focus                :       0.000000                            0.000000 :i0uPh\0  
    Index tolerance on surface 2 Y z<3JRw  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 UFXaEl}R   
    Change in Focus                :       0.000000                           -0.000000 v"y-0$M  
    %^?fMeI|Y  
    Worst offenders: TJ10s%,V  
    Type                      Value      Criterion        Change rJ`!:f  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 a!zz6/q[  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Kr?TxhUHd  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 !{ y@od@T  
    TSTX   2             0.20000000     0.35349910    -0.19053324 7BE>RE=)  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 C'>|J9~Gz  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ;;!yC  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 GA$V0YQX  
    TSTX   1             0.20000000     0.42678383    -0.11724851 OSRp0G20k\  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 Y4J3-wK5  
    TSTY   3             0.20000000     0.42861670    -0.11541563 h=W:^@G  
    h1j!IG  
    Estimated Performance Changes based upon Root-Sum-Square method: ,1y@Z 5wy  
    Nominal MTF                 :     0.54403234 216RiSr*  
    Estimated change            :    -0.36299231 8V~k5#&Ow  
    Estimated MTF               :     0.18104003 Lm iOhx  
    35h 8O,Y  
    Compensator Statistics: [8Y:65  
    Change in back focus: :N:yLd} &  
    Minimum            :        -0.000000  `xKp%9  
    Maximum            :         0.000000 BOX{]EOj  
    Mean               :        -0.000000 'f#{{KA  
    Standard Deviation :         0.000000 R"-mKT}  
    d?y4GkK  
    Monte Carlo Analysis: 4)S,3G  
    Number of trials: 20 Jf{*PgP  
    Lz |? ek7Q  
    Initial Statistics: Normal Distribution NG=@ -eu  
    `"Jj1O@  
      Trial       Criterion        Change LGq'WU31:)  
          1     0.42804416    -0.11598818 YDIG,%uv  
    Change in Focus                :      -0.400171 2bv=N4ly  
          2     0.54384387    -0.00018847 U&g@.,Y#  
    Change in Focus                :       1.018470 1D7nkAy  
          3     0.44510003    -0.09893230 +vw\y  
    Change in Focus                :      -0.601922 uFX#`^r`  
          4     0.18154684    -0.36248550 {dhXIs  
    Change in Focus                :       0.920681 1rNzJ;'  
          5     0.28665820    -0.25737414 WQx?[tW(U  
    Change in Focus                :       1.253875 B?OFe'*  
          6     0.21263372    -0.33139862 [T|aw1SoN  
    Change in Focus                :      -0.903878 2Sle#nw3  
          7     0.40051424    -0.14351809 KKb,d0T[  
    Change in Focus                :      -1.354815 Bj+S"yS  
          8     0.48754161    -0.05649072 ?so=;gh  
    Change in Focus                :       0.215922 4(#'_jS  
          9     0.40357468    -0.14045766 kVuUjP6(c  
    Change in Focus                :       0.281783 vt/x ,Y  
         10     0.26315315    -0.28087919 v3*_9e  
    Change in Focus                :      -1.048393 X@--m6-  
         11     0.26120585    -0.28282649 t*=CZE-  
    Change in Focus                :       1.017611 .H escg/S  
         12     0.24033815    -0.30369419 2% MC Yn  
    Change in Focus                :      -0.109292 %p Ynnfr  
         13     0.37164046    -0.17239188 R#s )r  
    Change in Focus                :      -0.692430 P:hBt\5B  
         14     0.48597489    -0.05805744 *2ZjE!A  
    Change in Focus                :      -0.662040 C+* d8_L  
         15     0.21462327    -0.32940907 hnffz95  
    Change in Focus                :       1.611296 kC:uG0sW  
         16     0.43378226    -0.11025008 O+nEXS\rQ  
    Change in Focus                :      -0.640081 Wt*cIZ  
         17     0.39321881    -0.15081353 g!|=%(G=  
    Change in Focus                :       0.914906 ISzqEi  
         18     0.20692530    -0.33710703 ^NLmgw Q  
    Change in Focus                :       0.801607 L{#IT.  
         19     0.51374068    -0.03029165 ; 8_{e3s  
    Change in Focus                :       0.947293 3BzNi'  
         20     0.38013374    -0.16389860 =R^%(Py  
    Change in Focus                :       0.667010 zZ:>do\2  
    UgRhWV~f0  
    Number of traceable Monte Carlo files generated: 20 kAKK bmE  
    R1s`z|?  
    Nominal     0.54403234 dydc}n  
    Best        0.54384387    Trial     2 ~]nRV *^  
    Worst       0.18154684    Trial     4 ,D5cjaX<  
    Mean        0.35770970 biLs+\C  
    Std Dev     0.11156454 *~2,/D  
    Tg7an&#  
    ajve~8/&  
    Compensator Statistics: q'+)t7!  
    Change in back focus: #9=Vg  
    Minimum            :        -1.354815 pXtl 6K%  
    Maximum            :         1.611296 #./fY;:cj  
    Mean               :         0.161872 CYt?,qk-r  
    Standard Deviation :         0.869664 >R|/M`<ph  
    J; S (>c  
    90% >       0.20977951               *}Xf!"I#]N  
    80% >       0.22748071               M+-*QyCFK  
    50% >       0.38667627               4M^= nae  
    20% >       0.46553746               ke!?BZx  
    10% >       0.50064115                ?K1/ <PE+  
    )i6mzzj5  
    End of Run. ]yV!  
    Jf@H/luW  
    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 [.K1i ZyTi  
    Upx G@b  
    C:GK,?!Jn'  
    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 cv8L-Z>x.=  
    %J#YM'g  
    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                 &]V.S7LC #  
    80% >       0.22748071                 dA#Q}.*r  
    50% >       0.38667627                 3^IpE];+:u  
    20% >       0.46553746                 R$v[!A+:'  
    10% >       0.50064115 9FoHD  
    @>u}eB>Kn  
    最后这个数值是MTF值呢，还是MTF的公差？ S O4u9V  
    imo$-}A  
    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？？？   <qtr   
    ?fiIwF)  
    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  : U}&2k  
    90% >       0.20977951                 FO=4:   
    80% >       0.22748071                 >,TUZ  
    50% >       0.38667627                 34z"Pm  
    20% >       0.46553746                 S\4tzz @  
    10% >       0.50064115 11TL~ xFh  
    ....... 0Z~p%C<LW  
    ~KHVY)@P  
    R(('/JC  
    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   yXz*5W_0D  
    Mode                : Sensitivities ?>hPO73{  
    Sampling            : 2 y603$Cv  
    Nominal Criterion   : 0.54403234 @<&5J7fb  
    Test Wavelength     : 0.6328 4NGA/ G  
    >{N9kW Y  
    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？ ,u!*2cWN  
    s}j{#xT  
    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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