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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 &kUEnwQ -  
    Y3=5J\d!a  
    [ R  
    X6)%2TwO  
    然后添加了默认公差分析，基本没变 JZI)jIh  
    "{(|}Cds  
    ]9qY(m  
    gB|>[6  
    然后运行分析的结果如下： FjR/_GPo6  
    @6h ,#8#  
    Analysis of Tolerances >9dzl#  
    DcYL8u  
    File : E:\光学设计资料\zemax练习\f500.ZMX FnxPM`Zx  
    Title: '2Q[g0VR  
    Date : TUE JUN 21 2011 /S2lA>  
    9^ ;Cz>6s  
    Units are Millimeters. #N Qpr  
    All changes are computed using linear differences. QTr) r;Tro  
    kb3>q($  
    Paraxial Focus compensation only. epN> ;e z  
    uPCzs$R  
    WARNING: Solves should be removed prior to tolerancing. 6$/Z.8  
    3E9 )~$  
    Mnemonics: M^IEu }  
    TFRN: Tolerance on curvature in fringes. K|L&mL&8  
    TTHI: Tolerance on thickness. ncTPFv H5  
    TSDX: Tolerance on surface decentering in x. bUvVt3cm  
    TSDY: Tolerance on surface decentering in y. J([Y4Em5  
    TSTX: Tolerance on surface tilt in x (degrees). Ig&H0S  
    TSTY: Tolerance on surface tilt in y (degrees). k_;g-r,  
    TIRR: Tolerance on irregularity (fringes). =z >d GIT1  
    TIND: Tolerance on Nd index of refraction. `A\,$(q+  
    TEDX: Tolerance on element decentering in x. ]2E#P.-!b  
    TEDY: Tolerance on element decentering in y. %#t*3[  
    TETX: Tolerance on element tilt in x (degrees). ?vt#M^Q   
    TETY: Tolerance on element tilt in y (degrees). f/xQy}4+~E  
    gGZ-B<  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. M>qqe!c*  
    mrmm@?  
    WARNING: Boundary constraints on compensators will be ignored. VAW:h5j2@  
    w#6)XR|+,.  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Ec/&?|$  
    Mode                : Sensitivities 4y*"w*L  
    Sampling            : 2 F $/7X~*  
    Nominal Criterion   : 0.54403234 :2t0//@X  
    Test Wavelength     : 0.6328 elJ?g &"  
    j(~e{HZ  
    mH.c`*  
    Fields: XY Symmetric Angle in degrees ,J6t 1V  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 8k{KnH  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ygK@\JHn  
    "DO|B=EejP  
    Sensitivity Analysis: lA{JpH_Y8s  
    jOUM+QO  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| Qm_IU!b  
    Type                      Value      Criterion        Change          Value      Criterion        Change L"KKW c  
    Fringe tolerance on surface 1 Y`NwE  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 V8n z@  
    Change in Focus                :      -0.000000                            0.000000 VLPPEV-u  
    Fringe tolerance on surface 2 C5Vlqc;  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 !zVjbYWY  
    Change in Focus                :       0.000000                            0.000000 'XJqh|G  
    Fringe tolerance on surface 3 0Q7|2{  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 shgZru  
    Change in Focus                :      -0.000000                            0.000000 *I:a \o~$[  
    Thickness tolerance on surface 1 lvAKL>qX  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 _u3%16,o  
    Change in Focus                :       0.000000                            0.000000 mE\)j*Nnv  
    Thickness tolerance on surface 2 8]K+,0m6  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Tw,|ZA4XH  
    Change in Focus                :       0.000000                           -0.000000 uc{s\_  
    Decenter X tolerance on surfaces 1 through 3 15z(hzU?#  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 S awf]/  
    Change in Focus                :       0.000000                            0.000000 BUCPO}I  
    Decenter Y tolerance on surfaces 1 through 3 Spu> ac  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 enGZb&  
    Change in Focus                :       0.000000                            0.000000 2BKiA[ ;;  
    Tilt X tolerance on surfaces 1 through 3 (degrees) hG~HV{6  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 _z=yt t9D  
    Change in Focus                :       0.000000                            0.000000 J#IVu?B  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) XuoyB{U  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 b_&:tE--]  
    Change in Focus                :       0.000000                            0.000000 { SF'YbY  
    Decenter X tolerance on surface 1 h ,\5C/  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 MQe|\SMd  
    Change in Focus                :       0.000000                            0.000000 (A )f r4  
    Decenter Y tolerance on surface 1 Nwj M=GG  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 q`VkA \  
    Change in Focus                :       0.000000                            0.000000 x4i&;SP0  
    Tilt X tolerance on surface (degrees) 1 \9fJ)*-  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ;m=k FZ?  
    Change in Focus                :       0.000000                            0.000000 n8E3w:A-  
    Tilt Y tolerance on surface (degrees) 1 @Q7^caG  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 : q>)c]  
    Change in Focus                :       0.000000                            0.000000 ]eUD3WUe>q  
    Decenter X tolerance on surface 2 OI_Px3) y  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 bE,#,  
    Change in Focus                :       0.000000                            0.000000 4/V;g%0uN;  
    Decenter Y tolerance on surface 2 b0sj0w/  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 :-_"[:t 5Z  
    Change in Focus                :       0.000000                            0.000000 O]Ey@7 &  
    Tilt X tolerance on surface (degrees) 2 b")O#v.  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 _?]W%R|  
    Change in Focus                :       0.000000                            0.000000 nA(5p?D+YB  
    Tilt Y tolerance on surface (degrees) 2 ^RE[5h6^q  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 &_q8F,I \<  
    Change in Focus                :       0.000000                            0.000000 d/3bE*gr  
    Decenter X tolerance on surface 3 ^M1jv(  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 194n   
    Change in Focus                :       0.000000                            0.000000 {Hie% 2V  
    Decenter Y tolerance on surface 3 |{ =Jp<} s  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 1,Es'  
    Change in Focus                :       0.000000                            0.000000 vmv6y*qU  
    Tilt X tolerance on surface (degrees) 3 qpQiMiB#g'  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 l, 9r d[  
    Change in Focus                :       0.000000                            0.000000 d;,Jf*x\  
    Tilt Y tolerance on surface (degrees) 3 IB$i ^  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 0nvT}[\H*  
    Change in Focus                :       0.000000                            0.000000 g*Pn_Yo[.  
    Irregularity of surface 1 in fringes odDVdVx0  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 u aYI3w@^  
    Change in Focus                :       0.000000                            0.000000  f,kV  
    Irregularity of surface 2 in fringes ^;K"Y'f$  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 W9{i~.zo  
    Change in Focus                :       0.000000                            0.000000 1Q=L/k eP  
    Irregularity of surface 3 in fringes &lID6{79Z  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 XI:+EeM?  
    Change in Focus                :       0.000000                            0.000000 WZn"I& Z  
    Index tolerance on surface 1 DxD\o+:r  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ]heVR&bQ  
    Change in Focus                :       0.000000                            0.000000 Lxn-M5RPQ  
    Index tolerance on surface 2 @#*{* S8  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 PdEPDyFkh  
    Change in Focus                :       0.000000                           -0.000000 E^Ch;)j|  
    ]yQqx*  
    Worst offenders: 2kOaKH[(q  
    Type                      Value      Criterion        Change 2s=zT5  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 k.})3~F-  
    TSTY   2             0.20000000     0.35349910    -0.19053324 Rqbz3h~  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 G0kF[8Am  
    TSTX   2             0.20000000     0.35349910    -0.19053324 <Qr*!-Kc6  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ;pS+S0U   
    TSTY   1             0.20000000     0.42678383    -0.11724851 G({5LjgW  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 P9R-41!  
    TSTX   1             0.20000000     0.42678383    -0.11724851 QCG-CzJ9 l  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 Q"Exmn3p  
    TSTY   3             0.20000000     0.42861670    -0.11541563 I FvigDj?  
    _+)n}Se  
    Estimated Performance Changes based upon Root-Sum-Square method: Zl>wWJ3y  
    Nominal MTF                 :     0.54403234 V lkJ$f5l  
    Estimated change            :    -0.36299231 dNCd-ep  
    Estimated MTF               :     0.18104003 oCLM'\  
    _j4 K  
    Compensator Statistics: tk)}4b^\%j  
    Change in back focus: P8H2v_)X&  
    Minimum            :        -0.000000 Q);}1'c  
    Maximum            :         0.000000 A/&u /?*C  
    Mean               :        -0.000000 O>I%O^  
    Standard Deviation :         0.000000 G^z>2P  
    Dw 5Ze  
    Monte Carlo Analysis: <WbO&;%  
    Number of trials: 20 i-#Dc (9  
    VZe'6?#  
    Initial Statistics: Normal Distribution  %{UW!/  
    ]ncK M?'O  
      Trial       Criterion        Change ~]Av$S  
          1     0.42804416    -0.11598818 /XA*:8~!  
    Change in Focus                :      -0.400171 \ [M4[Qlq  
          2     0.54384387    -0.00018847 KZ1m 2R}'  
    Change in Focus                :       1.018470 o.Bbb=*rZ  
          3     0.44510003    -0.09893230 0'Qvis[kt  
    Change in Focus                :      -0.601922 ~eS/gF?  
          4     0.18154684    -0.36248550 ug'^$geM  
    Change in Focus                :       0.920681 ^jcVJpyT@R  
          5     0.28665820    -0.25737414 %tPy]{S..  
    Change in Focus                :       1.253875 EP90E^v^  
          6     0.21263372    -0.33139862 Ef@)y&hn  
    Change in Focus                :      -0.903878 &LG|YvMY6  
          7     0.40051424    -0.14351809 >]A#_p  
    Change in Focus                :      -1.354815 Bk@EQdn  
          8     0.48754161    -0.05649072 O2f-{jnTz,  
    Change in Focus                :       0.215922 B/mfm 7  
          9     0.40357468    -0.14045766 IL uQf-  
    Change in Focus                :       0.281783 |eFaOL|  
         10     0.26315315    -0.28087919 ~Y;Z5e=  
    Change in Focus                :      -1.048393 fN21[Jv3  
         11     0.26120585    -0.28282649 Y4lNxvY  
    Change in Focus                :       1.017611 eht>4)  
         12     0.24033815    -0.30369419 90-s@a3B-j  
    Change in Focus                :      -0.109292 ]3 Ibl^J  
         13     0.37164046    -0.17239188 jK%Lewq  
    Change in Focus                :      -0.692430 XeslOsHh  
         14     0.48597489    -0.05805744 K|Xe)  
    Change in Focus                :      -0.662040 x8C *  
         15     0.21462327    -0.32940907 %Na` \`L{F  
    Change in Focus                :       1.611296 d/@P;YN!  
         16     0.43378226    -0.11025008 %h;1}SFl0  
    Change in Focus                :      -0.640081 9l|*E  
         17     0.39321881    -0.15081353 f)V6VNW.3  
    Change in Focus                :       0.914906 }AiF 7N0  
         18     0.20692530    -0.33710703 k'sPA_|  
    Change in Focus                :       0.801607 .$Yp~  
         19     0.51374068    -0.03029165 I47sqz7  
    Change in Focus                :       0.947293  tO D}&  
         20     0.38013374    -0.16389860  [@3.dd  
    Change in Focus                :       0.667010 i=hA. y`  
    K(?p]wh  
    Number of traceable Monte Carlo files generated: 20 \.GA" _y  
    CL?=j| Ea  
    Nominal     0.54403234 RMid}BRE  
    Best        0.54384387    Trial     2 h&!$ `)   
    Worst       0.18154684    Trial     4 U'Y,T$Q  
    Mean        0.35770970 7 9k+R9m  
    Std Dev     0.11156454 "5Z5x%3I  
    4af^SZ )l  
    v`Ja Bn  
    Compensator Statistics: _Kh8 <$h  
    Change in back focus: v-"nyy-&Z  
    Minimum            :        -1.354815 /YvwQ  
    Maximum            :         1.611296 -zzT:C  
    Mean               :         0.161872 9%0^fhrJ  
    Standard Deviation :         0.869664 hvA|d=R(  
    _?K,Jc8j.  
    90% >       0.20977951               rZ.z!10  
    80% >       0.22748071               sheCwhV  
    50% >       0.38667627               /1bQ RI^\  
    20% >       0.46553746               N] pw7S%  
    10% >       0.50064115                [o7Qr?RN  
    Ysw&J}6e  
    End of Run. ta'wX   
    ivt ~ S  
    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 i'1 MZ%.  
    m& D#5C  
    ~~m(CJ4S  
    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 |1e//*  
    k @gQY_  
    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                 M)H*$!x}>  
    80% >       0.22748071                 2h)Qz+|7  
    50% >       0.38667627                 _c}# f\ +_  
    20% >       0.46553746                 Q-1 Xgw!  
    10% >       0.50064115 bU/YU0ZIT  
    )l`VE_(|  
    最后这个数值是MTF值呢，还是MTF的公差？ -MFePpUt  
    iqN?'8  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   HuQdQ*Q  
    1y,/|Y  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : vo%"(!  
    90% >       0.20977951                 FZLx.3k4  
    80% >       0.22748071                 DJAKF  
    50% >       0.38667627                 II!~"-WH  
    20% >       0.46553746                 \PcnD$L  
    10% >       0.50064115 D3%2O`9  
    ....... M |f V7g  
    o"_'cNAz  
    ]hoq!:>M1  
    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   y%spI/(  
    Mode                : Sensitivities 4 Tw~4b  
    Sampling            : 2 v+8Ybq  
    Nominal Criterion   : 0.54403234 1j:aGj>{  
    Test Wavelength     : 0.6328 n.z,-H17  
    DfP-(Lm)  
    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？ o:fe`#t  
    [.1ME lM  
    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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