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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 4` '8fe/"  
    H7{Q@D8  
    Ze-MAt  
    U8CWz!;Qz  
    然后添加了默认公差分析，基本没变 T?W[Z_D  
    i LF^%!:X%  
    ~R :<Bw  
    c5X`_  
    然后运行分析的结果如下： w- UKMW9"  
    3^!Hl8P7  
    Analysis of Tolerances uWUR3n  
    J__;.rnk  
    File : E:\光学设计资料\zemax练习\f500.ZMX }X=87ud  
    Title: HH"$#T^-  
    Date : TUE JUN 21 2011 'I&|1I^  
    _Ny8j~  
    Units are Millimeters. ;(K  
    All changes are computed using linear differences. 1s Br.+p  
    Hl4\M]]/&  
    Paraxial Focus compensation only. 7N>oY$&)  
    vT?Q^PTO  
    WARNING: Solves should be removed prior to tolerancing. CXTt(-FT  
    *Wzwbwg  
    Mnemonics: JxjP@nr  
    TFRN: Tolerance on curvature in fringes. Iph3%RaE  
    TTHI: Tolerance on thickness. :bwM]k*$  
    TSDX: Tolerance on surface decentering in x. ?$3r5sx  
    TSDY: Tolerance on surface decentering in y. 6^Ph '  
    TSTX: Tolerance on surface tilt in x (degrees).  VJ3hC[  
    TSTY: Tolerance on surface tilt in y (degrees). +W6Hva.  
    TIRR: Tolerance on irregularity (fringes). ;P3>>DZ  
    TIND: Tolerance on Nd index of refraction. #e*X0;m  
    TEDX: Tolerance on element decentering in x. gF3TwAr  
    TEDY: Tolerance on element decentering in y. B]1HS`*7  
    TETX: Tolerance on element tilt in x (degrees). Yrpxy.1=F5  
    TETY: Tolerance on element tilt in y (degrees). hL0]R,t;'  
    Mec{_jiH&D  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. YZibi  
    DR6]-j!FK  
    WARNING: Boundary constraints on compensators will be ignored. aM), M]m[  
    =HMmrmz:  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Xem 05%,  
    Mode                : Sensitivities F+Z2U/'a  
    Sampling            : 2 Rv vh{U;t  
    Nominal Criterion   : 0.54403234 L!gDFZr  
    Test Wavelength     : 0.6328 qbXz7s*{  
    u yFn}y62  
    Te;gVG*  
    Fields: XY Symmetric Angle in degrees z5 Bi=~=#  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY " \:ced  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 h4Ia>^@  
    k^^:;OR  
    Sensitivity Analysis: AliRpxxd  
    ^/*KNnAWp  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| k5@d! }#c  
    Type                      Value      Criterion        Change          Value      Criterion        Change a+41Ojv (  
    Fringe tolerance on surface 1 |6%.VY2b  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 j5\$[-';  
    Change in Focus                :      -0.000000                            0.000000 XvskB[\  
    Fringe tolerance on surface 2 L~dC(J)@ZI  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 a=+T95ulDy  
    Change in Focus                :       0.000000                            0.000000 < A?<N?%o  
    Fringe tolerance on surface 3 J3G7zu8  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Wt J{  
    Change in Focus                :      -0.000000                            0.000000 t8& q9$  
    Thickness tolerance on surface 1 t[EfOQ  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 8.?E[~  
    Change in Focus                :       0.000000                            0.000000 ?U_9{}r  
    Thickness tolerance on surface 2 Zn&k[?;Al  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 m"4B!S&Fc(  
    Change in Focus                :       0.000000                           -0.000000 Zhzy.u/>  
    Decenter X tolerance on surfaces 1 through 3 iITp**l  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 DZe}y^F  
    Change in Focus                :       0.000000                            0.000000 BDe]18X  
    Decenter Y tolerance on surfaces 1 through 3 'L{p,  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 tWY2o3j  
    Change in Focus                :       0.000000                            0.000000 M$A#I51  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ioV_oR9I  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 $ D'^t(  
    Change in Focus                :       0.000000                            0.000000  i-W  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) m&IsDAn  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 W J+> e+  
    Change in Focus                :       0.000000                            0.000000 z<pJYpxH  
    Decenter X tolerance on surface 1 Km3&N  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 @u) 'yS  
    Change in Focus                :       0.000000                            0.000000 vG Vd  
    Decenter Y tolerance on surface 1 F Z!J  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Ftv8@l  
    Change in Focus                :       0.000000                            0.000000 sG,+  
    Tilt X tolerance on surface (degrees) 1 mJC3@V s  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 rg5]&<Vq8  
    Change in Focus                :       0.000000                            0.000000 M=y0PCD  
    Tilt Y tolerance on surface (degrees) 1 4:mCXP,x  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 <y)E>Fl  
    Change in Focus                :       0.000000                            0.000000 ;;V\"7q'  
    Decenter X tolerance on surface 2 47UO*oLS  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 +a|/l  
    Change in Focus                :       0.000000                            0.000000 7>i2OBkAhB  
    Decenter Y tolerance on surface 2 F9H~k"_ZJR  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 PuXUuJx(  
    Change in Focus                :       0.000000                            0.000000 b2 kWjg.4  
    Tilt X tolerance on surface (degrees) 2 tNnyue{p  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ksWSMxm  
    Change in Focus                :       0.000000                            0.000000 6^#uLp>  
    Tilt Y tolerance on surface (degrees) 2 4;KWG}~[o  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ZPO|<uR  
    Change in Focus                :       0.000000                            0.000000 RFko>d  
    Decenter X tolerance on surface 3 R1ktj  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 (~s|=Hxq|-  
    Change in Focus                :       0.000000                            0.000000 $h28(K%  
    Decenter Y tolerance on surface 3 PlCc8Zy  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 _:J*Cm[q  
    Change in Focus                :       0.000000                            0.000000 S>Z|) I  
    Tilt X tolerance on surface (degrees) 3  k0H#:c}  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 c ~F dx  
    Change in Focus                :       0.000000                            0.000000 h`5)2n+P  
    Tilt Y tolerance on surface (degrees) 3 I*\^,ow  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Bct"X#W|&  
    Change in Focus                :       0.000000                            0.000000 uQeu4$k!  
    Irregularity of surface 1 in fringes QH@>icAb  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 `v nJ4*  
    Change in Focus                :       0.000000                            0.000000 ~}%~oT  
    Irregularity of surface 2 in fringes 1u}nm;3  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 vtxvS3   
    Change in Focus                :       0.000000                            0.000000 2KI!af[I  
    Irregularity of surface 3 in fringes \u{8Bak0  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Ya Y8 `M{  
    Change in Focus                :       0.000000                            0.000000 YQ(Po!NI\'  
    Index tolerance on surface 1 +S~.c;EK  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 IFuZ]CBz  
    Change in Focus                :       0.000000                            0.000000 "uD= KlA  
    Index tolerance on surface 2 w1|Hy2D`0  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 TGV  
    Change in Focus                :       0.000000                           -0.000000 lCb+{OB  
    {3edTu  
    Worst offenders: .FP$ IWt/1  
    Type                      Value      Criterion        Change "x*-PFT  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 $=aI "(3&  
    TSTY   2             0.20000000     0.35349910    -0.19053324 {0yu   
    TSTX   2            -0.20000000     0.35349910    -0.19053324 \4bWWy  
    TSTX   2             0.20000000     0.35349910    -0.19053324 :tGYs8UK  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 g9mG`f  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ]tt} #  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 3|kgTB-  
    TSTX   1             0.20000000     0.42678383    -0.11724851  6sxz_f  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 &M"ouy Zo9  
    TSTY   3             0.20000000     0.42861670    -0.11541563 [}o~PN:sT(  
    <GIwRVCU  
    Estimated Performance Changes based upon Root-Sum-Square method: s& yk  
    Nominal MTF                 :     0.54403234 GJQc!cqk  
    Estimated change            :    -0.36299231 %3=J*wj>D  
    Estimated MTF               :     0.18104003 (#Mp 5C'X  
    TEVI'%F  
    Compensator Statistics: >PalH24]  
    Change in back focus: xtfRrX^  
    Minimum            :        -0.000000 RR|\- 8;  
    Maximum            :         0.000000 V1bh|+o9  
    Mean               :        -0.000000 .v`b[4M4  
    Standard Deviation :         0.000000 xJ(:m<z  
    Z<z;L<tJ 9  
    Monte Carlo Analysis: WeT* C  
    Number of trials: 20 .;I29yk\XS  
    _sMs}?^  
    Initial Statistics: Normal Distribution dcq#TBo8  
    lZ+!H=`  
      Trial       Criterion        Change E5G{B'%j  
          1     0.42804416    -0.11598818 `T WN^0!]  
    Change in Focus                :      -0.400171 =dH$2W)G  
          2     0.54384387    -0.00018847 @h9MxCE!  
    Change in Focus                :       1.018470 j, u#K)7{T  
          3     0.44510003    -0.09893230 jNl/!l7B  
    Change in Focus                :      -0.601922 \,xFg w4  
          4     0.18154684    -0.36248550 zCe/Kukvy  
    Change in Focus                :       0.920681 }E&NPp>  
          5     0.28665820    -0.25737414 UQ8bN I7  
    Change in Focus                :       1.253875 1;r69e  
          6     0.21263372    -0.33139862 kDsIp=  
    Change in Focus                :      -0.903878 q&si%  
          7     0.40051424    -0.14351809 X>l*v\F9  
    Change in Focus                :      -1.354815 "'tRfB   
          8     0.48754161    -0.05649072 _N#&psQzw  
    Change in Focus                :       0.215922 j4.&l3  
          9     0.40357468    -0.14045766 ;5S}~+j  
    Change in Focus                :       0.281783 SBfFZw)  
         10     0.26315315    -0.28087919 zICI_*~  
    Change in Focus                :      -1.048393 ecHP &Z$  
         11     0.26120585    -0.28282649 Wd 2sh  
    Change in Focus                :       1.017611 g1[&c+=U`P  
         12     0.24033815    -0.30369419 BGWAh2w6  
    Change in Focus                :      -0.109292 ; st\I  
         13     0.37164046    -0.17239188 $& {IKP)u  
    Change in Focus                :      -0.692430 9O98Q6-s  
         14     0.48597489    -0.05805744 trYTs,KV  
    Change in Focus                :      -0.662040 yI8tH!  
         15     0.21462327    -0.32940907 W{Q)-y  
    Change in Focus                :       1.611296 ~brFo2  
         16     0.43378226    -0.11025008 "QY1.:o<(  
    Change in Focus                :      -0.640081 /9hR  
         17     0.39321881    -0.15081353 zK5bO= 0j  
    Change in Focus                :       0.914906 b`~wG e  
         18     0.20692530    -0.33710703 \V%_hl  
    Change in Focus                :       0.801607 8tc*.H{^+  
         19     0.51374068    -0.03029165 /L~m#HxWU  
    Change in Focus                :       0.947293 4ke^*g K<  
         20     0.38013374    -0.16389860 :)c80`-E  
    Change in Focus                :       0.667010  Y7Gs7  
    cf;Ht^M\  
    Number of traceable Monte Carlo files generated: 20 Y E1Hpeb  
    Z85|I.mr  
    Nominal     0.54403234 q)I|2~Q c^  
    Best        0.54384387    Trial     2 (JZ".En#X  
    Worst       0.18154684    Trial     4 JLm @Ag  
    Mean        0.35770970 ~"dhu]^  
    Std Dev     0.11156454 #g v4  
    %_f;G+fK\p  
    v Xcy#  
    Compensator Statistics: AU{:;%.g  
    Change in back focus: Yp5L+~J[  
    Minimum            :        -1.354815 Wmz`&nsn[  
    Maximum            :         1.611296 AK/:I>M  
    Mean               :         0.161872 z hsx &  
    Standard Deviation :         0.869664 &RY)o^g[4  
    R@`rT*lJ  
    90% >       0.20977951               Xr_pgW|  
    80% >       0.22748071               2$0)?ZC?=  
    50% >       0.38667627               Spj9H?m  
    20% >       0.46553746               y-+G wa3  
    10% >       0.50064115                fI:H8  
    vr IV%l=  
    End of Run. %e=!nRc  
    |*\C{b  
    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 ElR)Gd_8  
    x ^vt; $  
    S/Oxr%H  
    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 Pes =aw  
    ExrY>*v  
    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                 2OCdG  
    80% >       0.22748071                 2"M_sL  
    50% >       0.38667627                 eH[y[~r  
    20% >       0.46553746                 A-0m8<  
    10% >       0.50064115 viV-e$s`.  
    9::YR;NY  
    最后这个数值是MTF值呢，还是MTF的公差？ uI9lK  
    {6tx,;r(F  
    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？？？   $4h04_"  
    llqDT-cp  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : #{?m  
    90% >       0.20977951                 Yoj~|qL  
    80% >       0.22748071                 )lE3GDAPgZ  
    50% >       0.38667627                 8o%E&Jg:  
    20% >       0.46553746                 upZYv~Sa  
    10% >       0.50064115 )3+xsnv  
    ....... \qRjXadj  
    R20a(4 m  
    GR_p1 C\  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   U1OLI]P  
    Mode                : Sensitivities IiYuUN1D  
    Sampling            : 2 qQ2  
    Nominal Criterion   : 0.54403234 :qt82tbn  
    Test Wavelength     : 0.6328 uKaf{=*  
     -fx(H+  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
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    只看该作者 6楼 发表于: 2011-06-24
    回 5楼(天地大同) 的帖子
    谢谢。您说的“波长632.8nm 时 mtf 是 0.54403234  没达到0.6”这是一个评价标准吧？ GN}9$:  
    )x9nED{  
    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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