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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 llcb~  
    w,#>G07D  
    ~;l@|7wGz  
    fmU {  
    然后添加了默认公差分析,基本没变 W>) M5t4i  
    )J2mM  
    ]^h]t~  
    0z1ifg&  
    然后运行分析的结果如下: 39:bzUIF  
    O_ `VV*  
    Analysis of Tolerances BXtCSfY $  
    B<5R   
    File : E:\光学设计资料\zemax练习\f500.ZMX IwQ"eUnK  
    Title: i3tg6o4C  
    Date : TUE JUN 21 2011 EK {Eo9l  
    ]<ldWL  
    Units are Millimeters. 24 [+pu  
    All changes are computed using linear differences. 2BQ j  
    zQcL|  (N  
    Paraxial Focus compensation only. Hx"ob_^'7  
     7''??X  
    WARNING: Solves should be removed prior to tolerancing. &XIt5<$~R  
    u(@$a4z  
    Mnemonics: L-ET<'u  
    TFRN: Tolerance on curvature in fringes. ck: T,F{}  
    TTHI: Tolerance on thickness. 6a[}'/  
    TSDX: Tolerance on surface decentering in x. 6HT ;#Znn  
    TSDY: Tolerance on surface decentering in y. {m4b(t`xw  
    TSTX: Tolerance on surface tilt in x (degrees). s^Y"'`+  
    TSTY: Tolerance on surface tilt in y (degrees). :ci5r;^  
    TIRR: Tolerance on irregularity (fringes). x-$&g*<  
    TIND: Tolerance on Nd index of refraction. |n2qVR,  
    TEDX: Tolerance on element decentering in x. % Qmn-uZ  
    TEDY: Tolerance on element decentering in y. IHB} `e|  
    TETX: Tolerance on element tilt in x (degrees). Bal$+S  
    TETY: Tolerance on element tilt in y (degrees). ]O]4z,n  
    Rw"sJ)/  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. (/=f6^}  
    h{%nC>m;  
    WARNING: Boundary constraints on compensators will be ignored. /KFfU1  
    nEJq_  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm }q_<_lQ  
    Mode                : Sensitivities PC~Y8,A|.t  
    Sampling            : 2 y&6FybIz  
    Nominal Criterion   : 0.54403234 WffQ:L?  
    Test Wavelength     : 0.6328 NSxoF3  
    !\-{D$E?H  
    `.E[}W  
    Fields: XY Symmetric Angle in degrees HJ9Kz^TnC  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY *w|:~g  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 d(\%Os   
    Z/W:97M  
    Sensitivity Analysis: HHA<IZ#;,  
    s]HOGJJz  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| MV5_L3M  
    Type                      Value      Criterion        Change          Value      Criterion        Change =m!-m\B/  
    Fringe tolerance on surface 1 #*D)Q/k  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 C_( *>!Z%  
    Change in Focus                :      -0.000000                            0.000000 o*b] p-  
    Fringe tolerance on surface 2 O8+7g+J=!  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ,kiv>{  
    Change in Focus                :       0.000000                            0.000000 (uXL^oja  
    Fringe tolerance on surface 3 <NR#Y%}-V  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 @:j}Jmg  
    Change in Focus                :      -0.000000                            0.000000 'H3^e}   
    Thickness tolerance on surface 1 v| gw9  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 0@[$lv;OS  
    Change in Focus                :       0.000000                            0.000000 6^V=?~a&z  
    Thickness tolerance on surface 2 eX?OYDDC0j  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 UvJ}b  
    Change in Focus                :       0.000000                           -0.000000 %>yG+Od5Z  
    Decenter X tolerance on surfaces 1 through 3 !02`t4Zc-  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 n&L+wqJ  
    Change in Focus                :       0.000000                            0.000000 &:;:"{t}Do  
    Decenter Y tolerance on surfaces 1 through 3 @D.}\(  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Sxnpq Vbk  
    Change in Focus                :       0.000000                            0.000000 &b.=M>\9Q  
    Tilt X tolerance on surfaces 1 through 3 (degrees) v:f}XK<  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 n D0K).=Q  
    Change in Focus                :       0.000000                            0.000000 ?8I?'\F;  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) o\[~.";Z  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 aAZZ8V  
    Change in Focus                :       0.000000                            0.000000 cm&nd'A't  
    Decenter X tolerance on surface 1  '<jyw   
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 <Q3oT  
    Change in Focus                :       0.000000                            0.000000 %D UH@j  
    Decenter Y tolerance on surface 1 *U^6u/iH  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 srPWE^&  
    Change in Focus                :       0.000000                            0.000000 p2Z?T}fa}&  
    Tilt X tolerance on surface (degrees) 1 'vVQg  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 w;;BSJ]+[  
    Change in Focus                :       0.000000                            0.000000 A^nvp!_  
    Tilt Y tolerance on surface (degrees) 1 61Bwb]\f/|  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 HD@$t)mn  
    Change in Focus                :       0.000000                            0.000000 i{Uc6 R6  
    Decenter X tolerance on surface 2 qt"G[9;  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ."TxX.&HE  
    Change in Focus                :       0.000000                            0.000000 O)C\v F#  
    Decenter Y tolerance on surface 2 bh s5x  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 4qphA9i1  
    Change in Focus                :       0.000000                            0.000000 5/q}`T9i%7  
    Tilt X tolerance on surface (degrees) 2 i#&z2h-b  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324  H_B4  
    Change in Focus                :       0.000000                            0.000000 %G3h?3  
    Tilt Y tolerance on surface (degrees) 2 Htay-PB }  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 gD0eFTN  
    Change in Focus                :       0.000000                            0.000000 l3KVW5-!gS  
    Decenter X tolerance on surface 3 dl.N.P7}4  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 P!~MZ+7#&  
    Change in Focus                :       0.000000                            0.000000 Yw22z #K  
    Decenter Y tolerance on surface 3 }wWKFX  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 V("{)0~O  
    Change in Focus                :       0.000000                            0.000000 KLU-DCb%  
    Tilt X tolerance on surface (degrees) 3 :lX!\(E2  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ~9?cn  
    Change in Focus                :       0.000000                            0.000000 Eou~P h*t  
    Tilt Y tolerance on surface (degrees) 3 gMv.V{vD  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 efSM`!%j  
    Change in Focus                :       0.000000                            0.000000 ZWii)0'PV  
    Irregularity of surface 1 in fringes ~{*7"o/  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 +ylTGSZS  
    Change in Focus                :       0.000000                            0.000000 -B>++r2A^  
    Irregularity of surface 2 in fringes n?oW< &  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 jAGTD I  
    Change in Focus                :       0.000000                            0.000000 ,f kcp]}  
    Irregularity of surface 3 in fringes #ml S}~n  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 g-qP;vy@"q  
    Change in Focus                :       0.000000                            0.000000 SIe="YG]<  
    Index tolerance on surface 1 lackB2J9 A  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 NnO~dRx{  
    Change in Focus                :       0.000000                            0.000000 G=)i{oC  
    Index tolerance on surface 2 { .n"Z  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 OBgkpx*Q  
    Change in Focus                :       0.000000                           -0.000000 Q.bXM?V)  
    VJ84?b{c W  
    Worst offenders: iy6On,UL  
    Type                      Value      Criterion        Change TvwZW!@jc  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ioa U*%  
    TSTY   2             0.20000000     0.35349910    -0.19053324 h,QKd>4:CF  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 ?M$.+V{a  
    TSTX   2             0.20000000     0.35349910    -0.19053324 SD#]$v  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ^m L@e'r  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ;1#H62Z*  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 ?8HHA: GP  
    TSTX   1             0.20000000     0.42678383    -0.11724851 1pQn8[sc@  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 E"\/ M  
    TSTY   3             0.20000000     0.42861670    -0.11541563 M\C"5%2Mu  
    2C2fGYu  
    Estimated Performance Changes based upon Root-Sum-Square method: (As#^q\>B  
    Nominal MTF                 :     0.54403234 &vHoRY  
    Estimated change            :    -0.36299231 <CRP ^_c  
    Estimated MTF               :     0.18104003 mCRt8 rY;  
    :Y-{Kn6`_  
    Compensator Statistics: siXr;/n"  
    Change in back focus: "X2Vrn'  
    Minimum            :        -0.000000 M]<?k]_p  
    Maximum            :         0.000000 832v"k CD  
    Mean               :        -0.000000 rMXN[,|v  
    Standard Deviation :         0.000000 KgV3j]d  
    =nz}XH%=  
    Monte Carlo Analysis: JROM_>mC  
    Number of trials: 20 IOTR/anu  
    ckV`OaRw4  
    Initial Statistics: Normal Distribution P D4Tz!F  
    0YaA`  
      Trial       Criterion        Change SH3|sXH<  
          1     0.42804416    -0.11598818 UYFwS/ RW}  
    Change in Focus                :      -0.400171 c/Qt Ot  
          2     0.54384387    -0.00018847 h"`ucC8X  
    Change in Focus                :       1.018470 Vw[6t>`  
          3     0.44510003    -0.09893230 Mc#*wEo)8  
    Change in Focus                :      -0.601922 sLh==V;9  
          4     0.18154684    -0.36248550 UU'|Xz9~  
    Change in Focus                :       0.920681 jATI&oX  
          5     0.28665820    -0.25737414 iM2W]  
    Change in Focus                :       1.253875 syk!7zfK  
          6     0.21263372    -0.33139862 za#s/b$[  
    Change in Focus                :      -0.903878 @|LBn6q  
          7     0.40051424    -0.14351809 ag$Vgl  
    Change in Focus                :      -1.354815 zs%Hb48V   
          8     0.48754161    -0.05649072 ?/TSi0R  
    Change in Focus                :       0.215922 nYWvTvZ  
          9     0.40357468    -0.14045766 0ph{  
    Change in Focus                :       0.281783 *ohL&'y  
         10     0.26315315    -0.28087919 CQwL|$)]Y  
    Change in Focus                :      -1.048393 5'0xz.)!  
         11     0.26120585    -0.28282649 U ?'vXa  
    Change in Focus                :       1.017611 A3vUPWdDk  
         12     0.24033815    -0.30369419 |M8WyW  
    Change in Focus                :      -0.109292 t(GR)&>.2  
         13     0.37164046    -0.17239188 'jmTXWq*  
    Change in Focus                :      -0.692430 3VuW#m#j  
         14     0.48597489    -0.05805744 Wf>zDW^"R  
    Change in Focus                :      -0.662040 ";BlIovT=R  
         15     0.21462327    -0.32940907 p7);uF^O%  
    Change in Focus                :       1.611296 c;{Q,"9U  
         16     0.43378226    -0.11025008 RE}?5XHb  
    Change in Focus                :      -0.640081 ,\X@~ j  
         17     0.39321881    -0.15081353 3VI4X  
    Change in Focus                :       0.914906 6``'%S'#  
         18     0.20692530    -0.33710703 DvPlV q~  
    Change in Focus                :       0.801607 J\J?yo 6  
         19     0.51374068    -0.03029165 ".SJ~`S  
    Change in Focus                :       0.947293 <F'X<Bau  
         20     0.38013374    -0.16389860 .U"8mP=&  
    Change in Focus                :       0.667010 wtmB+:I  
    KQ `qpX^d  
    Number of traceable Monte Carlo files generated: 20 Qhs/E`k4  
    %Rz&lh/  
    Nominal     0.54403234 /D5`   
    Best        0.54384387    Trial     2 76V 6cI=+  
    Worst       0.18154684    Trial     4 Vm5c+;  
    Mean        0.35770970 ]BtbWKJBqe  
    Std Dev     0.11156454 *4U^0e  
    0ge$ p,  
    z>jUR,!GT  
    Compensator Statistics: WZazJ=27}  
    Change in back focus: on0]vEE  
    Minimum            :        -1.354815 Glxuz0]  
    Maximum            :         1.611296  DVah  
    Mean               :         0.161872 W3Dc r@Dy  
    Standard Deviation :         0.869664 k=4N(i/s  
    3<k`+,'  
    90% >       0.20977951               Na$Is'F &p  
    80% >       0.22748071               {g2@6ct  
    50% >       0.38667627               &=<x#h-  
    20% >       0.46553746               !Gu%U$d  
    10% >       0.50064115                S;~g3DC d  
    '; =f  
    End of Run. smdZxFl  
    AtU v71D:  
    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 u$*56y   
    {~h*2n  
    BBH0OiV=  
    是大于0.6左右的,难道我按照这个默认的公差来加工的话,只有10%的才可能大于0.5?那太低了啊,请问这该怎么进行进一步处理。或者之前哪有问题 ZiYm:$CJ  
    ysmNio  
    不吝赐教
     
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    离线sansummer
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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?
    离线sansummer
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 M t*6}Cl  
    80% >       0.22748071                 "S&@F/  
    50% >       0.38667627                 ~6pr0uyO`  
    20% >       0.46553746                  *[r!  
    10% >       0.50064115 !@x+q)2  
    -29gL_dk.  
    最后这个数值是MTF值呢,还是MTF的公差? oEx\j+}@n  
    Y 2Q=rj  
    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???   :Gu+m  
    X=6y_^  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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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  : Eq^uKi  
    90% >       0.20977951                 8L5!T6+D&  
    80% >       0.22748071                 #fs|BV !  
    50% >       0.38667627                 o5Y2vmz?9  
    20% >       0.46553746                 85IMdZ7I  
    10% >       0.50064115 (X+s-4%  
    ....... xM s]Hs  
    J4 tcQ  
    L{ho*^b  
    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   LS.r%:$mb  
    Mode                : Sensitivities !OcENV  
    Sampling            : 2 .G>t72DpU  
    Nominal Criterion   : 0.54403234 BF8"rq}r0  
    Test Wavelength     : 0.6328 mzD^ Y<LTd  
    zzZg$9PT[  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
    离线sansummer
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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? , fb( WY  
    tkuc/Z/@  
    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
    离线sansummer
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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?
    离线天地大同
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    只看该作者 9楼 发表于: 2011-06-28
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    恩,多多尝试