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    [讨论]公差分析结果的疑问 [复制链接]

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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 X3zk UMk  
    6 J[ {?,  
    /Zw^EM6c  
    ,Cx @]]  
    然后添加了默认公差分析，基本没变  m~"<k d  
    EhDKh\OY5  
    !-1UJqO  
    5X>b(`  
    然后运行分析的结果如下： V'(yrz!   
    rvjPm5[t  
    Analysis of Tolerances K?0f)@\nx  
    L+y}hb r  
    File : E:\光学设计资料\zemax练习\f500.ZMX "IbXKS>t  
    Title: %>^CD_[eO  
    Date : TUE JUN 21 2011 csP 5R3  
    vd`;(4i#X  
    Units are Millimeters. ${\iHg[vZ  
    All changes are computed using linear differences. :tclYX  
    guJS;VC6U  
    Paraxial Focus compensation only. O>UG[ZgW  
    ?,8|K B  
    WARNING: Solves should be removed prior to tolerancing. \x D.rBbt  
    #(6^1S%  
    Mnemonics: `8^4,  
    TFRN: Tolerance on curvature in fringes. @ *W)r~ "~  
    TTHI: Tolerance on thickness. gZbC[L  
    TSDX: Tolerance on surface decentering in x. le1  
    TSDY: Tolerance on surface decentering in y. Ax &Z=  
    TSTX: Tolerance on surface tilt in x (degrees). Tjba @^T  
    TSTY: Tolerance on surface tilt in y (degrees). V<&x+?>S  
    TIRR: Tolerance on irregularity (fringes). ,e\'Y!'  
    TIND: Tolerance on Nd index of refraction. ( <~  
    TEDX: Tolerance on element decentering in x. Q;A1&UA2  
    TEDY: Tolerance on element decentering in y. h!l&S2)D`  
    TETX: Tolerance on element tilt in x (degrees). 1&%6sZN  
    TETY: Tolerance on element tilt in y (degrees). 1#rcxUSi  
    M*ZR+pq,  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. F*" "n  
    t){})nZ/4  
    WARNING: Boundary constraints on compensators will be ignored. $80 TRB#  
    QN`K|,}H^  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 2JY]$$K7  
    Mode                : Sensitivities 9z>I&vcX  
    Sampling            : 2 hgt@Mb   
    Nominal Criterion   : 0.54403234 _XLGXJ[B  
    Test Wavelength     : 0.6328 wuRB[KLe  
    g}(yq:D  
    mO];+=3v8  
    Fields: XY Symmetric Angle in degrees s|*0cK!K^  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Zj,1)ii  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 45g:q  
    ~<[$.8*  
    Sensitivity Analysis: @~t^zI1  
    ZBw]H'sT  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| %eK=5Er jx  
    Type                      Value      Criterion        Change          Value      Criterion        Change K?]><z{  
    Fringe tolerance on surface 1 +XL^dzN[|$  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 1%Yd] 1c(  
    Change in Focus                :      -0.000000                            0.000000  J+hiz3N  
    Fringe tolerance on surface 2 5q<cZ)v#&  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 &<??,R14  
    Change in Focus                :       0.000000                            0.000000 `" BFvF#  
    Fringe tolerance on surface 3 T!-*;yu  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 X/< zxM  
    Change in Focus                :      -0.000000                            0.000000 b$7p`Ay  
    Thickness tolerance on surface 1 c~1+5&  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 )Z4ilpU,  
    Change in Focus                :       0.000000                            0.000000 ^qB a~  
    Thickness tolerance on surface 2 0j{Rsy   
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 &6 ymGo  
    Change in Focus                :       0.000000                           -0.000000 *u J0ZO9  
    Decenter X tolerance on surfaces 1 through 3 m |Isi  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 0v7#vZ  
    Change in Focus                :       0.000000                            0.000000 o2AfMSt.  
    Decenter Y tolerance on surfaces 1 through 3 1Ce7\A  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Ax"]+pb  
    Change in Focus                :       0.000000                            0.000000 ^"lVTDsU  
    Tilt X tolerance on surfaces 1 through 3 (degrees) dnEIR5%+.  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 eyM<#3\\S  
    Change in Focus                :       0.000000                            0.000000 /\7E&n:)2  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) g|STegg  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 \mK;BWg)  
    Change in Focus                :       0.000000                            0.000000 Jcy{ ~>@7  
    Decenter X tolerance on surface 1 7'IcgTWDZy  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 h7 r *5E  
    Change in Focus                :       0.000000                            0.000000 P8& BtA  
    Decenter Y tolerance on surface 1 :mYVHLmea  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 g:dtfa/]  
    Change in Focus                :       0.000000                            0.000000 K_SURTys  
    Tilt X tolerance on surface (degrees) 1 0H9UM*O  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 dG8_3T}i  
    Change in Focus                :       0.000000                            0.000000 *'i9  
    Tilt Y tolerance on surface (degrees) 1 RpmOg  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 e]9Z]a2  
    Change in Focus                :       0.000000                            0.000000 { l0[`"EF  
    Decenter X tolerance on surface 2 8]@$7hy8  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 [SKN}:D  
    Change in Focus                :       0.000000                            0.000000 `[)!4Jb  
    Decenter Y tolerance on surface 2 Zk:Kux[7  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 gT-"=AsxZQ  
    Change in Focus                :       0.000000                            0.000000 ?)-#\z=6G  
    Tilt X tolerance on surface (degrees) 2 ]z77hcjB1  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 }xa~U,#5  
    Change in Focus                :       0.000000                            0.000000 =)c^ik%F&  
    Tilt Y tolerance on surface (degrees) 2 twWzS 4;  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ^-^ii 3G`  
    Change in Focus                :       0.000000                            0.000000 z=FOymv C  
    Decenter X tolerance on surface 3 C0K0c6A (4  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ;_~9".'<d  
    Change in Focus                :       0.000000                            0.000000 969Y[XQ  
    Decenter Y tolerance on surface 3 1 ORA6  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ;% <[*T:*'  
    Change in Focus                :       0.000000                            0.000000 M*gbA5  
    Tilt X tolerance on surface (degrees) 3 JGHQzC  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ?-v]+<$Y  
    Change in Focus                :       0.000000                            0.000000 73p7]Uo  
    Tilt Y tolerance on surface (degrees) 3 ]t"X~  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 \{EYkk0]  
    Change in Focus                :       0.000000                            0.000000 8a8CY,n{  
    Irregularity of surface 1 in fringes iSP}kM}  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 <B&vfKO^h  
    Change in Focus                :       0.000000                            0.000000 1w!O&kn  
    Irregularity of surface 2 in fringes C~-.zQ$  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 `s8o2"12  
    Change in Focus                :       0.000000                            0.000000 PjG^L FX  
    Irregularity of surface 3 in fringes Y"  Ut  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 V(5*Dn84  
    Change in Focus                :       0.000000                            0.000000 -=W Qed}  
    Index tolerance on surface 1 BUs={"Pa  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 cj\?vX\V  
    Change in Focus                :       0.000000                            0.000000 A\w"!tNM|  
    Index tolerance on surface 2 O=5q<7PM.  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 yZV Y3<]  
    Change in Focus                :       0.000000                           -0.000000 & [z<p  
    fZiwuq !_  
    Worst offenders: XW.k%H4@  
    Type                      Value      Criterion        Change *djVOC  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 GIv l|  
    TSTY   2             0.20000000     0.35349910    -0.19053324 m:D0O]2  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 [G",Yky  
    TSTX   2             0.20000000     0.35349910    -0.19053324 JJHO E{%  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 {)n@Rq\=v  
    TSTY   1             0.20000000     0.42678383    -0.11724851 X#>:9  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 M?_7*o]!  
    TSTX   1             0.20000000     0.42678383    -0.11724851 m-2!r*(zt  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 Itz[%Dbiq9  
    TSTY   3             0.20000000     0.42861670    -0.11541563 qi*Dd[OG  
    34,'smHi%  
    Estimated Performance Changes based upon Root-Sum-Square method: /|p\l"  
    Nominal MTF                 :     0.54403234 V!Pe%.>  
    Estimated change            :    -0.36299231 Ay6]vU  
    Estimated MTF               :     0.18104003 n-u HKBq  
    f hjlt#  
    Compensator Statistics: N9#5 P!  
    Change in back focus: /Un\P   
    Minimum            :        -0.000000 ,R\ex =c  
    Maximum            :         0.000000 .L~ NX/V  
    Mean               :        -0.000000 `&:>?Y/X2  
    Standard Deviation :         0.000000 xpJ=yxO  
    VXnWY8\  
    Monte Carlo Analysis: R; ui 4wg6  
    Number of trials: 20 '=`af>Nc  
    wBJ|%mc3TA  
    Initial Statistics: Normal Distribution y>X(GF^  
    \UP=pT@  
      Trial       Criterion        Change yAFt|<  
          1     0.42804416    -0.11598818 q`3HHq  
    Change in Focus                :      -0.400171 H;seT XL  
          2     0.54384387    -0.00018847 d`,z4 _  
    Change in Focus                :       1.018470  Q@!XVQx4  
          3     0.44510003    -0.09893230 ^3ai}Ei3  
    Change in Focus                :      -0.601922 #w@FBFr@  
          4     0.18154684    -0.36248550  }}Zg/(  
    Change in Focus                :       0.920681 '0=mV"#H{  
          5     0.28665820    -0.25737414 fR b  
    Change in Focus                :       1.253875 o:B?hr'\  
          6     0.21263372    -0.33139862 6!HYx  
    Change in Focus                :      -0.903878 K 6yD64  
          7     0.40051424    -0.14351809 $Xh5N3  
    Change in Focus                :      -1.354815 XmP,3KG2{S  
          8     0.48754161    -0.05649072 ^u2x26].  
    Change in Focus                :       0.215922 RBfzti6  
          9     0.40357468    -0.14045766 g~2=he\C  
    Change in Focus                :       0.281783 }G "EdhSl  
         10     0.26315315    -0.28087919 W!"Oho'  
    Change in Focus                :      -1.048393 <J>k%,:B  
         11     0.26120585    -0.28282649 B@@tKn_CQ  
    Change in Focus                :       1.017611 di(H-=9G62  
         12     0.24033815    -0.30369419 )gD2wk(  
    Change in Focus                :      -0.109292 dOK]Su  
         13     0.37164046    -0.17239188 a)*(**e$*i  
    Change in Focus                :      -0.692430 lvRTy|%[  
         14     0.48597489    -0.05805744 2r!- zEV  
    Change in Focus                :      -0.662040 *+k yuY J  
         15     0.21462327    -0.32940907 KG4zjQf  
    Change in Focus                :       1.611296 PC\p>6xT  
         16     0.43378226    -0.11025008 ^ p7z3ng  
    Change in Focus                :      -0.640081 oVr:ZwkG3  
         17     0.39321881    -0.15081353 PI@?I&Bo  
    Change in Focus                :       0.914906 <(_Tanx9Q  
         18     0.20692530    -0.33710703 (5A8#7a  
    Change in Focus                :       0.801607 AiL80W^=d)  
         19     0.51374068    -0.03029165 ;Ea8>  
    Change in Focus                :       0.947293 ?LJiFG]^m  
         20     0.38013374    -0.16389860 \=P(?!v  
    Change in Focus                :       0.667010 i8KoJY"  
    &^w "  
    Number of traceable Monte Carlo files generated: 20 ,xR u74  
    ,@fx[5{  
    Nominal     0.54403234 upaQoX/C  
    Best        0.54384387    Trial     2 vL;>A]oM2  
    Worst       0.18154684    Trial     4 @FZ_[CYg  
    Mean        0.35770970 r,3\32[?  
    Std Dev     0.11156454 D+jE{v'  
    fq4uiFi<  
    *VH Wvj  
    Compensator Statistics: H!6+x*P0  
    Change in back focus: 4c qf=  
    Minimum            :        -1.354815 O)DAYBv^  
    Maximum            :         1.611296 >j7]gi(  
    Mean               :         0.161872 7z$bCO L=S  
    Standard Deviation :         0.869664 acar-11_o/  
    ?bu=QV@  
    90% >       0.20977951               L7nG5i  
    80% >       0.22748071               GIT"J}b}  
    50% >       0.38667627               %"=GQ3u[  
    20% >       0.46553746               [$ uKI,l  
    10% >       0.50064115                ?S9vYaA$  
    H|7XfM  
    End of Run. *YX5bpR?  
    = y(*?TZH  
    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 l^KCsea#  
    ? HNuffk  
    SkC.A ?  
    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 Vugb;5Vl  
    ,j9?9Z7R  
    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                 1c429&-  
    80% >       0.22748071                 R*FDg;t4  
    50% >       0.38667627                 =kzp$ i  
    20% >       0.46553746                 3:8p="$F  
    10% >       0.50064115 En#Q p3  
    bBXLW}W  
    最后这个数值是MTF值呢，还是MTF的公差？ &['x+vL9  
    "wg$ H1K  
    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？？？   h^qZi@L  
    :vx<m_  
    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  : <H-kR\HF  
    90% >       0.20977951                 ai1;v@1  
    80% >       0.22748071                 frW\!r{LT  
    50% >       0.38667627                 5}Ge  
    20% >       0.46553746                 <nG}]Smd7  
    10% >       0.50064115 m.`I}  
    ....... _e ;b B?S  
    lo'#dpt<  
    UBM#~~sM  
    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   KnA BFH  
    Mode                : Sensitivities n7~4*B  
    Sampling            : 2 1!;~Y#  
    Nominal Criterion   : 0.54403234 ^c(r4#}$"  
    Test Wavelength     : 0.6328 $6J22m!S4n  
    "eOl(TSu/  
    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？ w6h83m 3  
    V_m!<s r(  
    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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