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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 C:d$   
    j{a3AEmps  
    ,\ RxKSU  
    GCEq3 ^/  
    然后添加了默认公差分析，基本没变 C]+T5W\"<B  
    M.R] hI  
    tpi>$:e  
    kaj6C_k|  
    然后运行分析的结果如下： xd`!z`X!,s  
    s%R'c_cGZ  
    Analysis of Tolerances )z#M_[zC>  
    F DCHB~D  
    File : E:\光学设计资料\zemax练习\f500.ZMX S4Vv _k-&  
    Title: Q-GnNT7MB3  
    Date : TUE JUN 21 2011 (e;9 ,~u)  
    :+>:>$ao  
    Units are Millimeters. NCM&6<_  
    All changes are computed using linear differences. ihJC)m`Hbl  
    Soa5TM  
    Paraxial Focus compensation only. h8!;RN[  
    z3[0BWXs  
    WARNING: Solves should be removed prior to tolerancing. :i6k6=  
    ?geEq'  
    Mnemonics: xBC:%kG~#  
    TFRN: Tolerance on curvature in fringes. ?=uw0~O[  
    TTHI: Tolerance on thickness. k98}Jx7J)"  
    TSDX: Tolerance on surface decentering in x. AQ 5CrYb  
    TSDY: Tolerance on surface decentering in y. o= %Fh  
    TSTX: Tolerance on surface tilt in x (degrees). Y Hv85y  
    TSTY: Tolerance on surface tilt in y (degrees). oGLSk (T&I  
    TIRR: Tolerance on irregularity (fringes). \ns#l@B  
    TIND: Tolerance on Nd index of refraction. I!;#Nk>  
    TEDX: Tolerance on element decentering in x. [T.BK:  
    TEDY: Tolerance on element decentering in y. ^Q?I8,4}  
    TETX: Tolerance on element tilt in x (degrees). -R;.Md_  
    TETY: Tolerance on element tilt in y (degrees). !Fz9\|  
    x6ig,N~AO  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. o?J>mpC  
    hsQrHs'k  
    WARNING: Boundary constraints on compensators will be ignored. ?7cF_Zvve  
    ntSPHK|'  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm @:. 6'ji,`  
    Mode                : Sensitivities uv2!][  
    Sampling            : 2 |j i}LWcD  
    Nominal Criterion   : 0.54403234 X3:-+]6,d  
    Test Wavelength     : 0.6328 1lNg} !)[K  
    s.rS06x  
    R?Q@)POW  
    Fields: XY Symmetric Angle in degrees t _Q/v  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY D(&${Mnac  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 `C`_2y8  
    Nky%v+r  
    Sensitivity Analysis: .JpYZ |  
    qb ^4G  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| >=2nAv/(  
    Type                      Value      Criterion        Change          Value      Criterion        Change 2 f]9I1{  
    Fringe tolerance on surface 1 4\?I4|{pC  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 {cv,Tz[Q>  
    Change in Focus                :      -0.000000                            0.000000 &Sc}3UI/F  
    Fringe tolerance on surface 2 'PlKCn`(w  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 3Lq?Y7#KQp  
    Change in Focus                :       0.000000                            0.000000 0rT-8iJp4P  
    Fringe tolerance on surface 3 U3^T.i"R  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 AO'B p5:Q  
    Change in Focus                :      -0.000000                            0.000000 1GW=QbO 6  
    Thickness tolerance on surface 1 3yXF| yV  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 VbtFM=Dg  
    Change in Focus                :       0.000000                            0.000000 4kA/W0 VG  
    Thickness tolerance on surface 2  { Lt \4h  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 }d)>pH  
    Change in Focus                :       0.000000                           -0.000000 b=QO^  
    Decenter X tolerance on surfaces 1 through 3 KTk%N p  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 e@L'H)w,  
    Change in Focus                :       0.000000                            0.000000 T.HI $(d  
    Decenter Y tolerance on surfaces 1 through 3 mB#`{|1[  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 [6 !/  
    Change in Focus                :       0.000000                            0.000000 5RTAM  
    Tilt X tolerance on surfaces 1 through 3 (degrees) o"v> BhpC  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 D|Z,eench  
    Change in Focus                :       0.000000                            0.000000 ha'oLm#  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ~]A';xH&  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 7BF't!-2F  
    Change in Focus                :       0.000000                            0.000000 Xt8;Pl  
    Decenter X tolerance on surface 1 ^<<( }3  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 "aP>}5<h  
    Change in Focus                :       0.000000                            0.000000 i<1w*yu  
    Decenter Y tolerance on surface 1 {:Z#8dGe  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 .dp~%!"Sn,  
    Change in Focus                :       0.000000                            0.000000 ~/\;7E{8!  
    Tilt X tolerance on surface (degrees) 1 m{x!uq  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 :M ix*NCf  
    Change in Focus                :       0.000000                            0.000000 788q<7E  
    Tilt Y tolerance on surface (degrees) 1 (J<@e!@NE  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 &.o}(e:]  
    Change in Focus                :       0.000000                            0.000000 n\*>m p)  
    Decenter X tolerance on surface 2 #joU}Rj|  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 }k<b)I*A  
    Change in Focus                :       0.000000                            0.000000 *s?&)][  
    Decenter Y tolerance on surface 2 VPn #O  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 J(M0t~RZ  
    Change in Focus                :       0.000000                            0.000000 n`68<ybl5  
    Tilt X tolerance on surface (degrees) 2 rEdr8qw  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 %o#D"  
    Change in Focus                :       0.000000                            0.000000 rQ*'2Zf'<  
    Tilt Y tolerance on surface (degrees) 2 v<tH 3I+   
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 UY{ Uo@k9x  
    Change in Focus                :       0.000000                            0.000000 ?GD{}f33  
    Decenter X tolerance on surface 3 v>)[NAY9  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 }.2pR*W  
    Change in Focus                :       0.000000                            0.000000 ERGDo=j  
    Decenter Y tolerance on surface 3 =t&B8+6  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 $|6Le; K  
    Change in Focus                :       0.000000                            0.000000 HC4ad0Gs+{  
    Tilt X tolerance on surface (degrees) 3 cGsxfwD  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 xHykU;p@  
    Change in Focus                :       0.000000                            0.000000 XT~JP  
    Tilt Y tolerance on surface (degrees) 3 k'%c|kx8U  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 x;Dr40wD@y  
    Change in Focus                :       0.000000                            0.000000 yKOf]m>#  
    Irregularity of surface 1 in fringes U`:#+8h-}  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 dm.?-u;C  
    Change in Focus                :       0.000000                            0.000000 z=>]E 1'RL  
    Irregularity of surface 2 in fringes f5wOk& G  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 B Ibcm,YQ  
    Change in Focus                :       0.000000                            0.000000 cKF02?)TX  
    Irregularity of surface 3 in fringes q'+XTal  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 vT%rg r  
    Change in Focus                :       0.000000                            0.000000 I^M3>}p  
    Index tolerance on surface 1 IOTHk+w  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 !S%XIq}FX  
    Change in Focus                :       0.000000                            0.000000 "@GopD  
    Index tolerance on surface 2 HQ@X"y n  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 A+Y>1-=JO  
    Change in Focus                :       0.000000                           -0.000000 v]U[7 j  
    <LZvG IMl  
    Worst offenders: F2oY_mA  
    Type                      Value      Criterion        Change fn#b3ee  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 A_Sl#e  
    TSTY   2             0.20000000     0.35349910    -0.19053324 qdZn9i  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 wc~a}0uz  
    TSTX   2             0.20000000     0.35349910    -0.19053324 RS<c&{?  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 EW#.)@-  
    TSTY   1             0.20000000     0.42678383    -0.11724851 s;8J= \9W  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 '9<Mk-Aj  
    TSTX   1             0.20000000     0.42678383    -0.11724851 4(u+YW GX  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 =kZPd>&L  
    TSTY   3             0.20000000     0.42861670    -0.11541563 .__X[Mzth3  
    1/gY]ghL  
    Estimated Performance Changes based upon Root-Sum-Square method: dldM h T$  
    Nominal MTF                 :     0.54403234 W1r-uR  
    Estimated change            :    -0.36299231 1#]tCi`  
    Estimated MTF               :     0.18104003 kc~Z1  
    q+gqa<kM  
    Compensator Statistics: wGnjuIR  
    Change in back focus: /d'^ XYOC  
    Minimum            :        -0.000000 rm3 ~]  
    Maximum            :         0.000000 @YpA'cX7  
    Mean               :        -0.000000 ]Z<{ ~  
    Standard Deviation :         0.000000 HOykmx6$  
    n8zUL1:R  
    Monte Carlo Analysis: "-v9V7KCM  
    Number of trials: 20 {l *ps-fi  
    j]Rl1~+M  
    Initial Statistics: Normal Distribution I+`~6  
    vx!nC}f"k`  
      Trial       Criterion        Change IO^O9IEx,  
          1     0.42804416    -0.11598818 w4(DR?[nC  
    Change in Focus                :      -0.400171 "vU:qwm  
          2     0.54384387    -0.00018847 ;EL!TzL:8  
    Change in Focus                :       1.018470 #ye++.7WK  
          3     0.44510003    -0.09893230 z<^HohT  
    Change in Focus                :      -0.601922 UvQxtT]  
          4     0.18154684    -0.36248550 r^*,eF  
    Change in Focus                :       0.920681 _e~EQ[,  
          5     0.28665820    -0.25737414 O_F<VV*MFQ  
    Change in Focus                :       1.253875 Fo?2nQ<  
          6     0.21263372    -0.33139862 x0Tb7y`  
    Change in Focus                :      -0.903878 m&2< ?a}l  
          7     0.40051424    -0.14351809 <ezvz..g  
    Change in Focus                :      -1.354815 $D9JsUij  
          8     0.48754161    -0.05649072 PJA 1/"  
    Change in Focus                :       0.215922 J"6_H =s   
          9     0.40357468    -0.14045766 er l_Gg  
    Change in Focus                :       0.281783 &)xoR4!2  
         10     0.26315315    -0.28087919 5f}63as  
    Change in Focus                :      -1.048393 2&$A x  
         11     0.26120585    -0.28282649 n]9y Cr  
    Change in Focus                :       1.017611 I!# 42~\  
         12     0.24033815    -0.30369419 Rq4\~F?  
    Change in Focus                :      -0.109292 InPq1AH  
         13     0.37164046    -0.17239188 ym(r;mj!  
    Change in Focus                :      -0.692430 4!/{CGP  
         14     0.48597489    -0.05805744 V\ARe=IWM  
    Change in Focus                :      -0.662040 T!v%NZj3  
         15     0.21462327    -0.32940907 8uT@$ ./  
    Change in Focus                :       1.611296 Vs{|:L+  
         16     0.43378226    -0.11025008 *]x]U >EF  
    Change in Focus                :      -0.640081 *(o~pxFTR  
         17     0.39321881    -0.15081353 !u\X,.h  
    Change in Focus                :       0.914906 `n5 )oU2q  
         18     0.20692530    -0.33710703 17<\Q(YQ=  
    Change in Focus                :       0.801607 hz\7Z+$L_  
         19     0.51374068    -0.03029165 "V?U^L>SF  
    Change in Focus                :       0.947293 F5+f?B~?R?  
         20     0.38013374    -0.16389860 !30Dice  
    Change in Focus                :       0.667010 HK:?Y[ebs  
    AO8`ItNZdT  
    Number of traceable Monte Carlo files generated: 20 \n:'>:0X!  
    q ,}W.  
    Nominal     0.54403234 61!R -  
    Best        0.54384387    Trial     2 pmQ9i A@=  
    Worst       0.18154684    Trial     4 Q3z-v&^E9  
    Mean        0.35770970 e7vPi QCc  
    Std Dev     0.11156454 Zf?>:P  
    %G\rL.H|  
    LRB#|PW  
    Compensator Statistics: 4V<s"  
    Change in back focus: /o8h1L=  
    Minimum            :        -1.354815 e[R364K  
    Maximum            :         1.611296 wCn W]<+  
    Mean               :         0.161872 MK~viSgi  
    Standard Deviation :         0.869664 + s1mm c  
    :[\}Hn=  
    90% >       0.20977951               ;uDH&3W  
    80% >       0.22748071               .rN 5A+By`  
    50% >       0.38667627               ;t"#7\  
    20% >       0.46553746               MlS<txFPS  
    10% >       0.50064115                oryoGy=(yk  
    ^U:pv0Qz  
    End of Run. P) GBuW  
    ic?6p  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 #Du1(R  
    0P%(4t$pd  
    8n);NZ  
    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 ^aXyho  
    ha3 Qx  
    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                 QZt/Rm>W0  
    80% >       0.22748071                 4TC !P}  
    50% >       0.38667627                 1th|n  
    20% >       0.46553746                 B.0(}@  
    10% >       0.50064115 B.Ic8'  
    YNHn# 98\  
    最后这个数值是MTF值呢，还是MTF的公差？ U#d&#",s  
    IWuR=I$t  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   HrEZ]iQ@O0  
    h^?[:XBeav  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : Czid"Ih-  
    90% >       0.20977951                 [/6$P[  
    80% >       0.22748071                 I8 8y9sW  
    50% >       0.38667627                 =}Bq"m  
    20% >       0.46553746                 Ej F<lw  
    10% >       0.50064115 X+?*Tw!\  
    ....... 3!Rb {  
    i ao/l  
    Haaungb"  
    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   gD@ &/j7  
    Mode                : Sensitivities ~Rs|W;  
    Sampling            : 2 o!aKeM~|Es  
    Nominal Criterion   : 0.54403234 % 95:yyH 0  
    Test Wavelength     : 0.6328 G|4vnIS  
    cx_[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？ #E{aN?_  
    QTz{ZNi!  
    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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