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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 ]>"q>XgnI  
    wJb"X=i*  
    n<3*7/-  
    EVE<LF?  
    然后添加了默认公差分析，基本没变 rxM)SC;P  
    r<XlIi  
    F3,djZq  
    $0wF4$)  
    然后运行分析的结果如下： 1Yb9ILX[J  
    ]Yd7  
    Analysis of Tolerances _>)=c<HL  
    eK_Yt~dj  
    File : E:\光学设计资料\zemax练习\f500.ZMX [-*8 S1  
    Title: OK1f Y`$z  
    Date : TUE JUN 21 2011 7iM;X2=7}  
    u*C"d1v=  
    Units are Millimeters. _0c$SK  
    All changes are computed using linear differences. mzoNXf:x  
    ja|XFs~  
    Paraxial Focus compensation only. EHC^ [5  
    cQ<* (KU  
    WARNING: Solves should be removed prior to tolerancing. j"Vb8}  
    .}||!  
    Mnemonics: jpW(w($XL  
    TFRN: Tolerance on curvature in fringes. 9X[}ik0  
    TTHI: Tolerance on thickness. |0A:0'uA!  
    TSDX: Tolerance on surface decentering in x. Uk0]A  
    TSDY: Tolerance on surface decentering in y.  cojbuo  
    TSTX: Tolerance on surface tilt in x (degrees). c-, 6k  
    TSTY: Tolerance on surface tilt in y (degrees). sJ(q.FRM'  
    TIRR: Tolerance on irregularity (fringes). .wv!;  
    TIND: Tolerance on Nd index of refraction. i <%  
    TEDX: Tolerance on element decentering in x. }^/;8cfLY  
    TEDY: Tolerance on element decentering in y. qf qp}g\  
    TETX: Tolerance on element tilt in x (degrees). QW_QizR>|  
    TETY: Tolerance on element tilt in y (degrees). H@R2mw  
    =P"Sm r  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. p<9e5`& I  
    YvP u%=eF  
    WARNING: Boundary constraints on compensators will be ignored. >|e>=  
    9&t!U+  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm NXyuv7%5=  
    Mode                : Sensitivities D@yuldx'/  
    Sampling            : 2 b2vc  
    Nominal Criterion   : 0.54403234 : %hxg  
    Test Wavelength     : 0.6328 ^M Zdht   
    >&kb|)  
    `Wf)qMb  
    Fields: XY Symmetric Angle in degrees 0- 'f1 1S  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY U2(|/M+  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 jt/ |u=  
    T'TxC)  
    Sensitivity Analysis: E*t0ia8  
    fP9k(mQX  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| aF'9&A;q  
    Type                      Value      Criterion        Change          Value      Criterion        Change #(`@D7S"  
    Fringe tolerance on surface 1 (n~ e2tZ/  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ZoiCdXvTN  
    Change in Focus                :      -0.000000                            0.000000 Y}C~&Ph  
    Fringe tolerance on surface 2 2 #+g4  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Je6=N3)  
    Change in Focus                :       0.000000                            0.000000 gl4|D  
    Fringe tolerance on surface 3 >iCkvQ  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 bh8IF,@a  
    Change in Focus                :      -0.000000                            0.000000 QzQTE-SQ  
    Thickness tolerance on surface 1  :_qgpE<  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 mmVx',k  
    Change in Focus                :       0.000000                            0.000000 ?=]*r>a3  
    Thickness tolerance on surface 2 Q.Kr;64G  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 :K3nJ1G&  
    Change in Focus                :       0.000000                           -0.000000 g8{?;  
    Decenter X tolerance on surfaces 1 through 3 "DFj4XKXY9  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 :q2tda  
    Change in Focus                :       0.000000                            0.000000 V+()`>44  
    Decenter Y tolerance on surfaces 1 through 3 jnK8 [och  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 M-2:$;D  
    Change in Focus                :       0.000000                            0.000000 m_TZY_;  
    Tilt X tolerance on surfaces 1 through 3 (degrees) cs?@Ri=g  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ]x hmM1$  
    Change in Focus                :       0.000000                            0.000000 %KeQp W  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) I54O9Aoy  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 *6)u5  
    Change in Focus                :       0.000000                            0.000000 .bOueB-  
    Decenter X tolerance on surface 1 "Q~6cH[#  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 fNi&1J-/  
    Change in Focus                :       0.000000                            0.000000 :zC'jceO  
    Decenter Y tolerance on surface 1 {.N" 6P  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 dm Lgt)-t  
    Change in Focus                :       0.000000                            0.000000 c?0uv2*Yh  
    Tilt X tolerance on surface (degrees) 1 #=f ]"uM<  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 `F>1xMm  
    Change in Focus                :       0.000000                            0.000000 FxKb  
    Tilt Y tolerance on surface (degrees) 1 ?wps_XU  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 E\r5!45r  
    Change in Focus                :       0.000000                            0.000000 E( M\U5o:  
    Decenter X tolerance on surface 2 O,_2dj d  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 t Ib?23K0  
    Change in Focus                :       0.000000                            0.000000 Y962rZ  
    Decenter Y tolerance on surface 2 =L$};ko  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 #[*e$C  
    Change in Focus                :       0.000000                            0.000000 #ZIV>(Q\H  
    Tilt X tolerance on surface (degrees) 2 Osb"$8im  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 P Z-|W  
    Change in Focus                :       0.000000                            0.000000 t%Z_*mIfmE  
    Tilt Y tolerance on surface (degrees) 2 u pf7:gk +  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 n>\BPiz  
    Change in Focus                :       0.000000                            0.000000 |,]#vcJP#b  
    Decenter X tolerance on surface 3 Y#c11q Z  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 c7IgndVAV  
    Change in Focus                :       0.000000                            0.000000 I0O)MR<  
    Decenter Y tolerance on surface 3 @ -JD`2z  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 `X]-blHo  
    Change in Focus                :       0.000000                            0.000000 sp[nKo ^  
    Tilt X tolerance on surface (degrees) 3 o><~.T=d&  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 sm}v0V.Js  
    Change in Focus                :       0.000000                            0.000000 4j)Y>  
    Tilt Y tolerance on surface (degrees) 3 3vOI=ar=L~  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 qkv.,z"  
    Change in Focus                :       0.000000                            0.000000 h^$>{0"  
    Irregularity of surface 1 in fringes 0At??Z py  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 4(&00#Yxg2  
    Change in Focus                :       0.000000                            0.000000 1,W%t\D  
    Irregularity of surface 2 in fringes 9U58#  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 T}2a~  
    Change in Focus                :       0.000000                            0.000000 E]_lYYkA  
    Irregularity of surface 3 in fringes lw? f2_fi  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ]k{cPK  
    Change in Focus                :       0.000000                            0.000000 3OFv_<6  
    Index tolerance on surface 1 p7!q#o  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 l~&efAJ-$  
    Change in Focus                :       0.000000                            0.000000 `S<uh9/  
    Index tolerance on surface 2 P _Zf(`jJ  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 '[5tc fG#z  
    Change in Focus                :       0.000000                           -0.000000  iTbmD  
    ]-)qL[Q  
    Worst offenders: M.d{:&@`%  
    Type                      Value      Criterion        Change *NDLGdQqz  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 b_Ba0h=  
    TSTY   2             0.20000000     0.35349910    -0.19053324 "S[VtuxPCU  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 4cJ7.Pez  
    TSTX   2             0.20000000     0.35349910    -0.19053324 %dL|i2+*8  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 a|5GC pp  
    TSTY   1             0.20000000     0.42678383    -0.11724851 yN~=3b>  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 c.&vWmLSGE  
    TSTX   1             0.20000000     0.42678383    -0.11724851 8c__ U<  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 u|8`=  
    TSTY   3             0.20000000     0.42861670    -0.11541563 3 %dbfT j  
    ClVMZ  
    Estimated Performance Changes based upon Root-Sum-Square method: H:9( XW  
    Nominal MTF                 :     0.54403234 |fTQ\q]W  
    Estimated change            :    -0.36299231 &.<{c `-  
    Estimated MTF               :     0.18104003 f|6%71  
    MkJL9eG  
    Compensator Statistics: wC=IN   
    Change in back focus: fgl"ox  
    Minimum            :        -0.000000 #)>>f  
    Maximum            :         0.000000 f*5=,$0  
    Mean               :        -0.000000 e@0wF59  
    Standard Deviation :         0.000000 A1%V<im@Z  
    <`| }bt  
    Monte Carlo Analysis: h{<^?=  
    Number of trials: 20 giaO7Qh~  
    W .Hv2r3  
    Initial Statistics: Normal Distribution g:;v]   
    = "c _<?=[  
      Trial       Criterion        Change 1 ,D2][  
          1     0.42804416    -0.11598818 P$]Vb'Fz  
    Change in Focus                :      -0.400171 Q1&: +7 %  
          2     0.54384387    -0.00018847 #wM0p:<  
    Change in Focus                :       1.018470 (eO0 Ic[c  
          3     0.44510003    -0.09893230 sur2Mw(M"  
    Change in Focus                :      -0.601922 %7 J  
          4     0.18154684    -0.36248550 eIof{#  
    Change in Focus                :       0.920681 tMyD^jVC  
          5     0.28665820    -0.25737414 Ju+@ROZ  
    Change in Focus                :       1.253875 [.<vISRir  
          6     0.21263372    -0.33139862 s|,gn5  
    Change in Focus                :      -0.903878 ~ xf9 ml  
          7     0.40051424    -0.14351809 A| Y\Y}  
    Change in Focus                :      -1.354815 VIi|:k  
          8     0.48754161    -0.05649072 LDPo}ogs  
    Change in Focus                :       0.215922 @4$F%[g h  
          9     0.40357468    -0.14045766 V!},a@>p  
    Change in Focus                :       0.281783 |UR.7rOV  
         10     0.26315315    -0.28087919 7)_0jp~2  
    Change in Focus                :      -1.048393 tvb hWYe  
         11     0.26120585    -0.28282649 N.-Ryj&9  
    Change in Focus                :       1.017611 sL&u%7>Re  
         12     0.24033815    -0.30369419 tanuP@O  
    Change in Focus                :      -0.109292 C 7+TnJ  
         13     0.37164046    -0.17239188 S~6<'N&[  
    Change in Focus                :      -0.692430 "n]B~D  
         14     0.48597489    -0.05805744 +p<Y)Z( >6  
    Change in Focus                :      -0.662040 })!n1kt  
         15     0.21462327    -0.32940907 N(1jm F  
    Change in Focus                :       1.611296 mDV 2vg  
         16     0.43378226    -0.11025008 bjQfZT(  
    Change in Focus                :      -0.640081 &S|laq H  
         17     0.39321881    -0.15081353 0|GxOzNd  
    Change in Focus                :       0.914906 lsio\ $  
         18     0.20692530    -0.33710703 9m6w.:S  
    Change in Focus                :       0.801607 DK)qBxc8  
         19     0.51374068    -0.03029165 orHVL2 KK  
    Change in Focus                :       0.947293 ) Fm  
         20     0.38013374    -0.16389860 }qlz^s  
    Change in Focus                :       0.667010 ;H\,w /E9  
    -OkKLub  
    Number of traceable Monte Carlo files generated: 20 Nz:  
    i:[B#|%  
    Nominal     0.54403234 y"9TS,lmK  
    Best        0.54384387    Trial     2 `L;I/Hp  
    Worst       0.18154684    Trial     4 le[5a=e(  
    Mean        0.35770970 wk5a &  
    Std Dev     0.11156454 BO h  
    /5J! s="  
    B2Orw8F  
    Compensator Statistics: 5 !NPqka}.  
    Change in back focus: +ubO-A?  
    Minimum            :        -1.354815 3G>E>yJ  
    Maximum            :         1.611296 T+.wJ W:jh  
    Mean               :         0.161872 T Z>z5YTv  
    Standard Deviation :         0.869664 uox;PDK  
    7NXT.E~2  
    90% >       0.20977951               dG)A-qbV  
    80% >       0.22748071               O:Z|fDQ`  
    50% >       0.38667627               <B``/EX^  
    20% >       0.46553746               GuS3O)6Sg  
    10% >       0.50064115                =8J\;h  
    NKI&n]EO  
    End of Run. 94lmsE  
    W&p-Z"=)  
    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 ^~Ar  
    E=x\f "Z  
    74[}AA  
    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 Y5npz^i  
    CRqa[boU*  
    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                 Uex b>|  
    80% >       0.22748071                 cN :;ir  
    50% >       0.38667627                 Fd 91Y  
    20% >       0.46553746                 $i2gOz  
    10% >       0.50064115 ZcQm(my  
    npe*A  
    最后这个数值是MTF值呢，还是MTF的公差？ CkflEmfe  
    )a6i8b3  
    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？？？   8<G@s`*  
    :,u+[0-S  
    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  : |9Y9pked8  
    90% >       0.20977951                 mkWIJH  
    80% >       0.22748071                 %d>Ktf  
    50% >       0.38667627                 *<UQ/)\  
    20% >       0.46553746                 6>"0H/y,  
    10% >       0.50064115 ZNUV Bi  
    ....... o1Xk\R{  
    *n*OVI8L  
    -0kwS4Hx2  
    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   ,wq.C6;&  
    Mode                : Sensitivities o`#;[  
    Sampling            : 2 K.cNx  
    Nominal Criterion   : 0.54403234 pymT-  
    Test Wavelength     : 0.6328 8U8"k  
    w@"|S_E  
    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？ Ek 4aC3  
    v5*SoUOF  
    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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