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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 uzg(C#sp  
    .7&V@A7  
    v e($l"T  
    E! d?@Xr@  
    然后添加了默认公差分析，基本没变 lC/1,Z/M  
    5;'(^z-bL  
    2(LF @xb  
    @W}cM  
    然后运行分析的结果如下： -!;2?6R9{  
    WoM;)Q  
    Analysis of Tolerances X3e&c  
    p 4_j>JPv5  
    File : E:\光学设计资料\zemax练习\f500.ZMX Ipro6 I  
    Title: %O6r  
    Date : TUE JUN 21 2011 ?M!Mb-C[  
    ^POHQQ  
    Units are Millimeters. ,]`|2j  
    All changes are computed using linear differences. -yOwX2Wv5;  
    QO2@K1Y  
    Paraxial Focus compensation only. z]_2lx2e  
    j9gn7LS  
    WARNING: Solves should be removed prior to tolerancing. VyX5MVh  
    Y TpiOPf  
    Mnemonics: <*JFY%y "  
    TFRN: Tolerance on curvature in fringes. F+o4f3N  
    TTHI: Tolerance on thickness. /tm2b<G  
    TSDX: Tolerance on surface decentering in x. GuK3EM*_  
    TSDY: Tolerance on surface decentering in y. `%QXaKO-  
    TSTX: Tolerance on surface tilt in x (degrees). Q^\m@7O :  
    TSTY: Tolerance on surface tilt in y (degrees). #($~e|  
    TIRR: Tolerance on irregularity (fringes). y0vJ@ %`  
    TIND: Tolerance on Nd index of refraction. 'Qdea$o  
    TEDX: Tolerance on element decentering in x. b@QCdi,u  
    TEDY: Tolerance on element decentering in y. {p\ll  
    TETX: Tolerance on element tilt in x (degrees). <W] RyEg`  
    TETY: Tolerance on element tilt in y (degrees). c wNJ{S+  
    >?<S(  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. wZ4w`|'  
    i<0_sxfUD  
    WARNING: Boundary constraints on compensators will be ignored. "QD>m7  
    s\+| ql  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm (}g4}A@x  
    Mode                : Sensitivities BP4xXdG  
    Sampling            : 2 kEgpF{"%n  
    Nominal Criterion   : 0.54403234 rp9?p%  
    Test Wavelength     : 0.6328 {V,aCr  
    }y%c.  
    BLN|QaZ  
    Fields: XY Symmetric Angle in degrees Y~ xo=v(  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY &(7=NAQsE  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 Gv[s86AP,  
    pMHF u/|Pr  
    Sensitivity Analysis: _aeIK  
    y'aK92pF:  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| M>E~eb/  
    Type                      Value      Criterion        Change          Value      Criterion        Change _01wRsm%2  
    Fringe tolerance on surface 1 =oBlUE  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374  nU4to  
    Change in Focus                :      -0.000000                            0.000000 \q($8<  
    Fringe tolerance on surface 2 beaSvhPU  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 }?\^^v h7  
    Change in Focus                :       0.000000                            0.000000 #M%K82"  
    Fringe tolerance on surface 3 .TMLg(2hgv  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 i;rcg d  
    Change in Focus                :      -0.000000                            0.000000 7u{V1_ n1  
    Thickness tolerance on surface 1 C}#$wge  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 wn^#`s!]U  
    Change in Focus                :       0.000000                            0.000000 @R-11wP)M  
    Thickness tolerance on surface 2 [~PR\qm  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 :YQI1 q[6  
    Change in Focus                :       0.000000                           -0.000000 l A%FS]vh  
    Decenter X tolerance on surfaces 1 through 3 UX+vU@Co[  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 %x.du9  
    Change in Focus                :       0.000000                            0.000000 VKkvf"X  
    Decenter Y tolerance on surfaces 1 through 3 "OwK-  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 j7U&a}(  
    Change in Focus                :       0.000000                            0.000000 Bn9#F#F<  
    Tilt X tolerance on surfaces 1 through 3 (degrees) O\CnKNk,  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 2eHVl.C5  
    Change in Focus                :       0.000000                            0.000000 "~=-Q#xO  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ,z<1:st]<  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 3.@LAF  
    Change in Focus                :       0.000000                            0.000000 y XKddD  
    Decenter X tolerance on surface 1 EK= y!>  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 RC}m]!Uz  
    Change in Focus                :       0.000000                            0.000000 #i .,+Q  
    Decenter Y tolerance on surface 1 "u]&~$  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 C6EGM/m8  
    Change in Focus                :       0.000000                            0.000000 J%-4ZB"  
    Tilt X tolerance on surface (degrees) 1 ?JG^GD7D  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 p^|6 /b  
    Change in Focus                :       0.000000                            0.000000  IMr#5  
    Tilt Y tolerance on surface (degrees) 1 .%y'q!?  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 pHuR_U5*?  
    Change in Focus                :       0.000000                            0.000000 }K8e(i6z  
    Decenter X tolerance on surface 2 HCsd$M;Hbv  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 y>.t[*zT  
    Change in Focus                :       0.000000                            0.000000 m% 3D  
    Decenter Y tolerance on surface 2 Ml$<x"Q  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 4(s HUWT  
    Change in Focus                :       0.000000                            0.000000 Y/6>OD  
    Tilt X tolerance on surface (degrees) 2 1 _Oc1RM   
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 B2oKvgw  
    Change in Focus                :       0.000000                            0.000000 .dMdb7  
    Tilt Y tolerance on surface (degrees) 2 ) [?xT  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 0 zK{)HZ  
    Change in Focus                :       0.000000                            0.000000 rrr_{d/  
    Decenter X tolerance on surface 3 SkMFJ?J/  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 [al$sCD]+  
    Change in Focus                :       0.000000                            0.000000 {aNpk,n  
    Decenter Y tolerance on surface 3 /2zan}  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Cdib{y<ji  
    Change in Focus                :       0.000000                            0.000000 0Dna+V/jI  
    Tilt X tolerance on surface (degrees) 3 $,2T~1tE  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 5?F5xiW  
    Change in Focus                :       0.000000                            0.000000 t"Ci1"U  
    Tilt Y tolerance on surface (degrees) 3 Vi:^bv  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 P woiX#vz  
    Change in Focus                :       0.000000                            0.000000 (De{r|  
    Irregularity of surface 1 in fringes mM72>1~L*  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 hrtz>qN  
    Change in Focus                :       0.000000                            0.000000 yw$4Hlj5  
    Irregularity of surface 2 in fringes * eC[74Kng  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 bq9w@O  
    Change in Focus                :       0.000000                            0.000000 |mE;HvQF  
    Irregularity of surface 3 in fringes tnaFbmp  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 'Gqv`rq&  
    Change in Focus                :       0.000000                            0.000000 %2T i Rb  
    Index tolerance on surface 1 | bz%SB  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 3PGAUQR#"q  
    Change in Focus                :       0.000000                            0.000000 ^l|b>z"0ao  
    Index tolerance on surface 2 >iae2W`  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 chKK9SC+|  
    Change in Focus                :       0.000000                           -0.000000 y7M{L8{0  
    + x=)Kp>  
    Worst offenders: cd1G.10  
    Type                      Value      Criterion        Change s6@mXO:H^  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 Cp(2]Eb  
    TSTY   2             0.20000000     0.35349910    -0.19053324 u30D`sky  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 7Vsp<s9bj  
    TSTX   2             0.20000000     0.35349910    -0.19053324 i-Rn,}v  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 KF00=HE|]  
    TSTY   1             0.20000000     0.42678383    -0.11724851 a3<:F2=~\  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 >i,_qe?V:w  
    TSTX   1             0.20000000     0.42678383    -0.11724851 I7oA7@zv  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 qEr?4h  
    TSTY   3             0.20000000     0.42861670    -0.11541563 N=BG0t$  
    '1:)q  
    Estimated Performance Changes based upon Root-Sum-Square method: 3{$7tck,  
    Nominal MTF                 :     0.54403234 M/quswn1  
    Estimated change            :    -0.36299231 M&j|5UH%.  
    Estimated MTF               :     0.18104003 OQ&N]P2p  
    VFL^-tXnA^  
    Compensator Statistics: 9Q%lS  
    Change in back focus:  >Ua'*  
    Minimum            :        -0.000000 Sy|GM~  
    Maximum            :         0.000000 WJOoDS!i  
    Mean               :        -0.000000 QM F   
    Standard Deviation :         0.000000 GYx0U8MJ[e  
    +T$Olz  
    Monte Carlo Analysis: 80*hi)ux[  
    Number of trials: 20 cx$IWQf2  
    3$nK   
    Initial Statistics: Normal Distribution Sp80xV_B  
    Y/kq!)u;%L  
      Trial       Criterion        Change x/umwT,ov  
          1     0.42804416    -0.11598818 D#b*M)X"  
    Change in Focus                :      -0.400171 KOS0Du  
          2     0.54384387    -0.00018847 E7fQ9]  
    Change in Focus                :       1.018470 a)JXxst  
          3     0.44510003    -0.09893230 V ql4*OJW  
    Change in Focus                :      -0.601922 {siOa%;*  
          4     0.18154684    -0.36248550 "Gp[.=.z?  
    Change in Focus                :       0.920681 r%?-MGc  
          5     0.28665820    -0.25737414 K:a8}w>Up  
    Change in Focus                :       1.253875 TU0-L35P1  
          6     0.21263372    -0.33139862 js<d"m*  
    Change in Focus                :      -0.903878 xmv %O&0^}  
          7     0.40051424    -0.14351809 ;7lON-@BI  
    Change in Focus                :      -1.354815 |6*Bu1  
          8     0.48754161    -0.05649072 CJ\a7=*i  
    Change in Focus                :       0.215922 )x|;%.8FX7  
          9     0.40357468    -0.14045766 bV8+E u  
    Change in Focus                :       0.281783 }tW-l*\U  
         10     0.26315315    -0.28087919 L/"};VI  
    Change in Focus                :      -1.048393 D*%am|QL  
         11     0.26120585    -0.28282649 I9S;t _Z<  
    Change in Focus                :       1.017611 R&Y_  
         12     0.24033815    -0.30369419 Sf*)Z3f  
    Change in Focus                :      -0.109292 f8]sjeY  
         13     0.37164046    -0.17239188 ,-#MEr  
    Change in Focus                :      -0.692430 KS$t  
         14     0.48597489    -0.05805744 zFq%[ X  
    Change in Focus                :      -0.662040 W`;;fJe  
         15     0.21462327    -0.32940907 ^3$l!>me  
    Change in Focus                :       1.611296 /| v.A\ :  
         16     0.43378226    -0.11025008 Jj-\Eb?  
    Change in Focus                :      -0.640081 OyZR&,q  
         17     0.39321881    -0.15081353 =Z^5'h~  
    Change in Focus                :       0.914906 (F4e}hr&  
         18     0.20692530    -0.33710703 exb} y  
    Change in Focus                :       0.801607 vA/SrX.  
         19     0.51374068    -0.03029165 o&?c,FwN  
    Change in Focus                :       0.947293 :\OSHs<M  
         20     0.38013374    -0.16389860 z'q~%1t  
    Change in Focus                :       0.667010 :jiuu@<  
    RV~fml9c  
    Number of traceable Monte Carlo files generated: 20 IOl_J>D]F  
    fu "cX;  
    Nominal     0.54403234 TEC^|U`G  
    Best        0.54384387    Trial     2 U**8^:*y#:  
    Worst       0.18154684    Trial     4 F^yW3|Sb  
    Mean        0.35770970 Y!<m8\  
    Std Dev     0.11156454 ^[?y 2A:  
    h6h6B.\ Ld  
    (;l@d|g  
    Compensator Statistics: kTb$lLG\xk  
    Change in back focus: Je6[q  
    Minimum            :        -1.354815 b#6S8C+@  
    Maximum            :         1.611296 ipv5JD[  
    Mean               :         0.161872  Z1 D  
    Standard Deviation :         0.869664 y]j.PT`Cw  
    {"ST hTZ  
    90% >       0.20977951               I=0c\ U}  
    80% >       0.22748071               8Qg10Yjy  
    50% >       0.38667627               L/8oqO|  
    20% >       0.46553746               op6]"ZV-C  
    10% >       0.50064115                5)#j}`6  
    cJ4My#w  
    End of Run. -zg*p&F  
    a"vzC$Hxd  
    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 >yO/p(/;jR  
    $Rm~ VwY#  
    `OfhzOp  
    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 Q0xO;20  
    7V"?o  
    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                 .}dLqw  
    80% >       0.22748071                 5U?O1}P  
    50% >       0.38667627                 uX7L1~s-  
    20% >       0.46553746                 <-`bWz=+  
    10% >       0.50064115 a ,mgM&yD  
    ~?/7: S  
    最后这个数值是MTF值呢，还是MTF的公差？ 7F"ljkN1S  
    ) 57'<  
    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？？？   PF4[;E S'  
    !@z9n\Yj  
    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  :  3B#fnj  
    90% >       0.20977951                 A7QT4h&6  
    80% >       0.22748071                 u9_? c G-  
    50% >       0.38667627                 1mV ' ~W  
    20% >       0.46553746                 &'\-M6GW  
    10% >       0.50064115 K%9!1'  
    ....... ;zqxDl_  
    c%<81Y=  
    T c-fO /0  
    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   T&dc)t`o  
    Mode                : Sensitivities 6hcs )X7m  
    Sampling            : 2 @sR/l;  
    Nominal Criterion   : 0.54403234 h6Vd<sV\tf  
    Test Wavelength     : 0.6328  w&U28"i>  
    s]vsD77&  
    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？ #;2kN &  
    @ /e{-Q  
    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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