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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 zCrM~  
    C}71SlN'M  
    q+)s  
    A/OGF>  
    然后添加了默认公差分析，基本没变 ~"cqFdnO  
    eK/rs r  
    v"sN K  
    ~V/?/J$  
    然后运行分析的结果如下： rs@qC>_C0  
    {;={ abj  
    Analysis of Tolerances ,ysn7Y{Y  
    +2m\Sv V  
    File : E:\光学设计资料\zemax练习\f500.ZMX zrV~7$HL  
    Title: (kJ"M4*<F'  
    Date : TUE JUN 21 2011 ~g&Gi)je  
    -V52?Hq  
    Units are Millimeters. m$bNQ7  
    All changes are computed using linear differences. ?ehUGvV2  
    0T:ZWRjH  
    Paraxial Focus compensation only. (Zu8WyT2  
    cC$E"m  
    WARNING: Solves should be removed prior to tolerancing. << aAYkx <  
    k&o1z'<C  
    Mnemonics: XtIY8wsP  
    TFRN: Tolerance on curvature in fringes. +|Mi lwr  
    TTHI: Tolerance on thickness. $u{ 8wF/)  
    TSDX: Tolerance on surface decentering in x. %M-B"#OB7  
    TSDY: Tolerance on surface decentering in y. Lu~M=Fh  
    TSTX: Tolerance on surface tilt in x (degrees). [4HOWM>\  
    TSTY: Tolerance on surface tilt in y (degrees). xilA`uw`1  
    TIRR: Tolerance on irregularity (fringes). B3yp2tncj  
    TIND: Tolerance on Nd index of refraction. BoXGoFn  
    TEDX: Tolerance on element decentering in x. tkEup&  
    TEDY: Tolerance on element decentering in y. UzUt=s!^H  
    TETX: Tolerance on element tilt in x (degrees). y_Nn%(j  
    TETY: Tolerance on element tilt in y (degrees). yQ+C}8r5  
    ~'/_q4  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. !Baq4V?KN  
    ?)XPY<  
    WARNING: Boundary constraints on compensators will be ignored. !,N),xG}~  
    3o^  oq  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 3EX41)u  
    Mode                : Sensitivities 0& ?/TSC  
    Sampling            : 2 TYgn X  
    Nominal Criterion   : 0.54403234 &;oWmmvz{  
    Test Wavelength     : 0.6328 0V?:5r<  
    &^JY  
    n*i1QC  
    Fields: XY Symmetric Angle in degrees X" ;ly0Mb  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY R6 dD17  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 30$Q5]T  
    O$ ;:5zT  
    Sensitivity Analysis: 2~SjRIpUw  
    }\_[+@*EJ  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| `xd{0EvF  
    Type                      Value      Criterion        Change          Value      Criterion        Change xnG,1doa  
    Fringe tolerance on surface 1 9-N*Jhg  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 )6Qk|gIu(  
    Change in Focus                :      -0.000000                            0.000000 #[ hJm'G  
    Fringe tolerance on surface 2 w1P8p>vA1  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 }u8D5Q<(  
    Change in Focus                :       0.000000                            0.000000 "6 fTZ<  
    Fringe tolerance on surface 3 '}T6e1#JV  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 _J`q\N K  
    Change in Focus                :      -0.000000                            0.000000 3QzHQU  
    Thickness tolerance on surface 1 &d^u$Y5  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ]Vgl  
    Change in Focus                :       0.000000                            0.000000 QH_I<Y:n  
    Thickness tolerance on surface 2 '74-rL:i  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Qd$!?h  
    Change in Focus                :       0.000000                           -0.000000 B0}f,J\  
    Decenter X tolerance on surfaces 1 through 3 f.&Y_G3a<  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 6v}WdK  
    Change in Focus                :       0.000000                            0.000000 CGkCLd*s]  
    Decenter Y tolerance on surfaces 1 through 3 VwV`tKit  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 XK4idC  
    Change in Focus                :       0.000000                            0.000000 ');QmN%J  
    Tilt X tolerance on surfaces 1 through 3 (degrees) -l` 1j6  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 UP}5Eh  
    Change in Focus                :       0.000000                            0.000000 L(i*v5?  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) A 9HJWKO  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 K@z zseQ}=  
    Change in Focus                :       0.000000                            0.000000 '@<aS?@!t  
    Decenter X tolerance on surface 1 D#n^U `\if  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 S<V__Sv  
    Change in Focus                :       0.000000                            0.000000 @dj 2#  
    Decenter Y tolerance on surface 1 +aWI"d--h  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ^?)o,djY&  
    Change in Focus                :       0.000000                            0.000000 H#B~ h4#  
    Tilt X tolerance on surface (degrees) 1 :D'#CoBA  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 E)dV;1t  
    Change in Focus                :       0.000000                            0.000000 ymLhSF][  
    Tilt Y tolerance on surface (degrees) 1 #c ndq[H  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 n(#159pZ  
    Change in Focus                :       0.000000                            0.000000 -Vi"hSsUP  
    Decenter X tolerance on surface 2 /U#{6zeM[,  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 n)7olP0p  
    Change in Focus                :       0.000000                            0.000000 w3=Bj  
    Decenter Y tolerance on surface 2 9\]%N;;Lo  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 OyG$ ]C  
    Change in Focus                :       0.000000                            0.000000 .iB?:  
    Tilt X tolerance on surface (degrees) 2 )TBG-<wt  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 D{aN_0mT  
    Change in Focus                :       0.000000                            0.000000 8U07]=Bt<  
    Tilt Y tolerance on surface (degrees) 2 pGy(JvMw"  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 idf~"a  
    Change in Focus                :       0.000000                            0.000000 / ` 7p'i  
    Decenter X tolerance on surface 3 TB gD"i-  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Et=N`k _gO  
    Change in Focus                :       0.000000                            0.000000 qxsK-8KT<  
    Decenter Y tolerance on surface 3 F-k3F80=  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 .1.Bf26}d  
    Change in Focus                :       0.000000                            0.000000 +FWkhmTv  
    Tilt X tolerance on surface (degrees) 3 f-?00*T  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 =yf LqU  
    Change in Focus                :       0.000000                            0.000000 b0 CtQe  
    Tilt Y tolerance on surface (degrees) 3 UpgY}pf}  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 wyk4v}  
    Change in Focus                :       0.000000                            0.000000 ! Q`GA<ikv  
    Irregularity of surface 1 in fringes 7B$iM,}.b  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 E lt=/,v`!  
    Change in Focus                :       0.000000                            0.000000 >Rw[x  
    Irregularity of surface 2 in fringes kne{Tp  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Y" s1z<?  
    Change in Focus                :       0.000000                            0.000000 vv  _I o  
    Irregularity of surface 3 in fringes Y#_,Ig5.  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 J3fcnI  
    Change in Focus                :       0.000000                            0.000000 5A:mu+Iz6H  
    Index tolerance on surface 1 Kc*h@#`~oL  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Z,Z34:-  
    Change in Focus                :       0.000000                            0.000000 %v\0Dm+A  
    Index tolerance on surface 2 f~u]fpkz  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 kL,{H~iq;  
    Change in Focus                :       0.000000                           -0.000000 bmotR8d  
    |2\6X's  
    Worst offenders: 'w`:p{E  
    Type                      Value      Criterion        Change Gw*n,*pz  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 \+E{8&TH'  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ~ jb6  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 q"5iza__H  
    TSTX   2             0.20000000     0.35349910    -0.19053324 E ?(  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 Efb>ZQ  
    TSTY   1             0.20000000     0.42678383    -0.11724851 I=wP"(2  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 DD\:glo  
    TSTX   1             0.20000000     0.42678383    -0.11724851 x-k}RI  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 }+0{opY4R  
    TSTY   3             0.20000000     0.42861670    -0.11541563 r>S?,qr  
    |A0LYKni  
    Estimated Performance Changes based upon Root-Sum-Square method: ^zHBDRsb2F  
    Nominal MTF                 :     0.54403234 k+2~=#  
    Estimated change            :    -0.36299231 |b{XnD_g  
    Estimated MTF               :     0.18104003 TdI5{?sW  
    C`3}7qi|C  
    Compensator Statistics: 1@C0c%  
    Change in back focus: g]R }w@nJ  
    Minimum            :        -0.000000 >[=q9k  
    Maximum            :         0.000000 G}Cze Lw  
    Mean               :        -0.000000 ow*) 1eo  
    Standard Deviation :         0.000000 w{Wz^=';  
    6)m}e?D>  
    Monte Carlo Analysis: w1/p wzn  
    Number of trials: 20 p5c^dC{   
    !CROc}  
    Initial Statistics: Normal Distribution l [?o du4  
    j0!Z 20  
      Trial       Criterion        Change [Z|R-{"  
          1     0.42804416    -0.11598818 HcA;'L?Dw  
    Change in Focus                :      -0.400171 v`MCV29!}  
          2     0.54384387    -0.00018847 *D1 ^Se  
    Change in Focus                :       1.018470 Jz s.)  
          3     0.44510003    -0.09893230 Y@N}XH<4R  
    Change in Focus                :      -0.601922 ^#2w::Ds}!  
          4     0.18154684    -0.36248550 m(E-?VMHo  
    Change in Focus                :       0.920681 \5 IB/ *  
          5     0.28665820    -0.25737414 XKB)++Q=  
    Change in Focus                :       1.253875 Y~vI@$<~(  
          6     0.21263372    -0.33139862 40N8?kQ}?  
    Change in Focus                :      -0.903878 * VH!<k[n  
          7     0.40051424    -0.14351809 cj@Ygc)n  
    Change in Focus                :      -1.354815 [f}YXQ0N)  
          8     0.48754161    -0.05649072 AzVON#rj  
    Change in Focus                :       0.215922 Eym<DPu$n  
          9     0.40357468    -0.14045766 i ~fkjn  
    Change in Focus                :       0.281783 s@K)RhTY  
         10     0.26315315    -0.28087919 +M!f}=H  
    Change in Focus                :      -1.048393 T>s~bIzL*e  
         11     0.26120585    -0.28282649 Io*`hA]  
    Change in Focus                :       1.017611 BB5(=n+  
         12     0.24033815    -0.30369419 0&2(1  
    Change in Focus                :      -0.109292 I.TdYSB  
         13     0.37164046    -0.17239188 EV| 6._Z(D  
    Change in Focus                :      -0.692430 $Zp\^cIE+  
         14     0.48597489    -0.05805744 1GKd*z  
    Change in Focus                :      -0.662040 +0\BI<aG  
         15     0.21462327    -0.32940907 TaeN?jc5  
    Change in Focus                :       1.611296 LO<R<zz  
         16     0.43378226    -0.11025008 +uKh]RP  
    Change in Focus                :      -0.640081 RUUV"y  
         17     0.39321881    -0.15081353 c1M/:*?%  
    Change in Focus                :       0.914906 fOCLN$x^  
         18     0.20692530    -0.33710703 lN#W  
    Change in Focus                :       0.801607 I~?D^   
         19     0.51374068    -0.03029165 (:Rj:8{  
    Change in Focus                :       0.947293 wgxr8;8`q  
         20     0.38013374    -0.16389860 T;qP"KWZ  
    Change in Focus                :       0.667010 SYRr|Lg  
    R!b<Sg  
    Number of traceable Monte Carlo files generated: 20 VV O C-:  
     -iWt~  
    Nominal     0.54403234 z[X>>P3<n  
    Best        0.54384387    Trial     2 p'fq&a+  
    Worst       0.18154684    Trial     4 Y3+DTR0|'  
    Mean        0.35770970 +<7~yZ[Z8  
    Std Dev     0.11156454 u8L%R[#o  
    ?U.+SQ  
    hAtf)  
    Compensator Statistics: 9HrT>{@  
    Change in back focus: FIhq>L.q4  
    Minimum            :        -1.354815 HpY-7QTPJ~  
    Maximum            :         1.611296 S[(Tpk2_  
    Mean               :         0.161872 U;u@\E@2  
    Standard Deviation :         0.869664 UZ7Zzc#g  
    Jt5\  
    90% >       0.20977951               @dei} !e  
    80% >       0.22748071               m/uBM6SXx  
    50% >       0.38667627               NovF?kh2  
    20% >       0.46553746               ,Bax0p  
    10% >       0.50064115                =aZgq99  
    Uo?g@D  
    End of Run. _K["qm{X_  
    H <41H;m  
    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 TG 9 a1q  
    %0l'Nuz  
    b>SG5EqU@  
    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 KGb:NQ=O6i  
    )(yD"]co  
    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                 n}0n!Pr^  
    80% >       0.22748071                 s4V-brCM$|  
    50% >       0.38667627                 ZAATV+Z  
    20% >       0.46553746                 -DAkVFsN  
    10% >       0.50064115 |q| ?y`X4/  
    _[%2QwAUj*  
    最后这个数值是MTF值呢，还是MTF的公差？ b;Nm$`2  
    fv@mA--  
    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？？？   FTu6%~M/  
    1,Ams  
    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  : OA7YWk<K  
    90% >       0.20977951                 5FJ(x:k?z  
    80% >       0.22748071                 4j1$1C{  
    50% >       0.38667627                 wPE\?en  
    20% >       0.46553746                 79*f <Gr  
    10% >       0.50064115 Hk8lHja+\  
    ....... ,*kh{lJ  
    5r1u_8)'  
    O7"16~ a  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   j.ZXLe~  
    Mode                : Sensitivities im3BQIPR  
    Sampling            : 2 ^)E# c  
    Nominal Criterion   : 0.54403234 GU|(m~,`  
    Test Wavelength     : 0.6328 0z$::p$%u  
    _Rb>py  
    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？ }60/5HNr  
    OWc~=Cr  
    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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