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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 ]7<m1Lg  
    "Z9^}  
    O]_={%   
    Y@:3 B:m#  
    然后添加了默认公差分析，基本没变 %Rn:G K  
    vahf]2jEB  
    eiB(VOJ  
    \9jpCNdJ  
    然后运行分析的结果如下： }:^XX0:FK  
    5rF/323z  
    Analysis of Tolerances "o==4?*L  
    L w*1 .~  
    File : E:\光学设计资料\zemax练习\f500.ZMX +3?`M<L0  
    Title: :|($,3*  
    Date : TUE JUN 21 2011 0~i qG  
    AO8:|?3S  
    Units are Millimeters. [;F{mN  
    All changes are computed using linear differences. =F[lg?g  
    wz@/5c/u  
    Paraxial Focus compensation only. >0M:&NMda  
    ahoh9iJ  
    WARNING: Solves should be removed prior to tolerancing. z@n+7p`w  
    -&7=uRQk  
    Mnemonics: bXm :]?  
    TFRN: Tolerance on curvature in fringes. ]TfeBX6ST  
    TTHI: Tolerance on thickness. C&oxi$J:p+  
    TSDX: Tolerance on surface decentering in x. '}fel5YV  
    TSDY: Tolerance on surface decentering in y. $l43>e{E  
    TSTX: Tolerance on surface tilt in x (degrees). r'PE5xqF  
    TSTY: Tolerance on surface tilt in y (degrees). p}r yKW\cJ  
    TIRR: Tolerance on irregularity (fringes). XWf7"]%SX  
    TIND: Tolerance on Nd index of refraction. 0O^r.&{j>  
    TEDX: Tolerance on element decentering in x. yI *M[0  
    TEDY: Tolerance on element decentering in y. clC~2:  
    TETX: Tolerance on element tilt in x (degrees). F]Pul|.l  
    TETY: Tolerance on element tilt in y (degrees). A'b<?)Y7_  
    ~q5-9{ma  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. n4XMN\:g{  
    iUpSN0XkMM  
    WARNING: Boundary constraints on compensators will be ignored. "1CGO@AXS  
    P69>gBZYD  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 6|i`@|#  
    Mode                : Sensitivities L:Ed-=|Uw  
    Sampling            : 2 w0\4Wa  
    Nominal Criterion   : 0.54403234 Do(P dF6A  
    Test Wavelength     : 0.6328 (O Qi%/Oy  
    LP8o7%sv!  
    UT % #K%  
    Fields: XY Symmetric Angle in degrees yh4jRe?f  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY $<14JEU  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 (c 1u{  
    (kdC1,E  
    Sensitivity Analysis: u`nt\OF  
    K"G(?<>~4c  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| @t "~   
    Type                      Value      Criterion        Change          Value      Criterion        Change !HbqbS22  
    Fringe tolerance on surface 1 #fJwC7  4  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 =CGD ~p`  
    Change in Focus                :      -0.000000                            0.000000 \}n !yYh(  
    Fringe tolerance on surface 2 pEJ#ad  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 :R{x]sv  
    Change in Focus                :       0.000000                            0.000000 PlF89-  
    Fringe tolerance on surface 3 8x` Kl(  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ]kzv8#  
    Change in Focus                :      -0.000000                            0.000000 54;l*}8Hl  
    Thickness tolerance on surface 1 <[esA9.]t  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 .$n$%|"H-  
    Change in Focus                :       0.000000                            0.000000 sf<Q#ieTxY  
    Thickness tolerance on surface 2 M P_A<F  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 |qQ{8T%)  
    Change in Focus                :       0.000000                           -0.000000 f&+XPd %  
    Decenter X tolerance on surfaces 1 through 3 nmTm(?yE  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 G%y>:$rw[O  
    Change in Focus                :       0.000000                            0.000000 .Gjr`6R  
    Decenter Y tolerance on surfaces 1 through 3 |C&%S"*+D  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Ks9FnDm8  
    Change in Focus                :       0.000000                            0.000000 s0_-1VU  
    Tilt X tolerance on surfaces 1 through 3 (degrees) ^mS.HT=X  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 M9g~lKs'  
    Change in Focus                :       0.000000                            0.000000 >Iu]T{QNO  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) o",f(v&u%  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 /h1dm,  
    Change in Focus                :       0.000000                            0.000000 wpAw/-/  
    Decenter X tolerance on surface 1 `%KpTh  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 bS_y_ 9K  
    Change in Focus                :       0.000000                            0.000000 :|*Gnu  
    Decenter Y tolerance on surface 1 c,+L +  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 |G|*  
    Change in Focus                :       0.000000                            0.000000 C.b,]7i  
    Tilt X tolerance on surface (degrees) 1 ^D% }V-"  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 wUh3Hd'  
    Change in Focus                :       0.000000                            0.000000 !C9ps]6  
    Tilt Y tolerance on surface (degrees) 1 hr )+Pk  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 z }FiU[Hs  
    Change in Focus                :       0.000000                            0.000000 :w?:WH?2L  
    Decenter X tolerance on surface 2 #i}#jMT  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 6R$ F =MB  
    Change in Focus                :       0.000000                            0.000000 s BeP;ox  
    Decenter Y tolerance on surface 2 lBizC5t!o  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 8MYLXW6  
    Change in Focus                :       0.000000                            0.000000 ^&f{beU9  
    Tilt X tolerance on surface (degrees) 2 $gj+v+%N  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 f}Ne8]U/Hc  
    Change in Focus                :       0.000000                            0.000000  ?.4yg(  
    Tilt Y tolerance on surface (degrees) 2 Q#yu(  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 &hSnB~hi  
    Change in Focus                :       0.000000                            0.000000 {<''OwQF~+  
    Decenter X tolerance on surface 3 Uxj<x`<1x  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 E|F!S(.:,M  
    Change in Focus                :       0.000000                            0.000000 j]@ x Q,y  
    Decenter Y tolerance on surface 3 a2(D!_dZR  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 D:ql^{~  
    Change in Focus                :       0.000000                            0.000000 glOqft&>`  
    Tilt X tolerance on surface (degrees) 3 35]j;8N:  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 KZp,=[t  
    Change in Focus                :       0.000000                            0.000000 CrRQPgl+u  
    Tilt Y tolerance on surface (degrees) 3 m<X#W W)N  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 GY0XWUlC  
    Change in Focus                :       0.000000                            0.000000 ShEaL&'J  
    Irregularity of surface 1 in fringes 4U LJtM3  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 @1J51< x  
    Change in Focus                :       0.000000                            0.000000 ZTgAZ5_cz  
    Irregularity of surface 2 in fringes `g4Ekp'Rp[  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 1`2);b{@  
    Change in Focus                :       0.000000                            0.000000 n6}E4Eno  
    Irregularity of surface 3 in fringes '0])7jq  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 q>D4ma^  
    Change in Focus                :       0.000000                            0.000000 ,N))=/  
    Index tolerance on surface 1 <ZHY3  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Q*mMF@-:  
    Change in Focus                :       0.000000                            0.000000 xy-$v   
    Index tolerance on surface 2 {LMS~nx  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 *tbpFk4/  
    Change in Focus                :       0.000000                           -0.000000 N>cp>&jV  
    LoV*YSDAY  
    Worst offenders: _4XoUE\\  
    Type                      Value      Criterion        Change : e0R7sj  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 Yq)YS]  
    TSTY   2             0.20000000     0.35349910    -0.19053324 & 8:iB {n  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 ]$?zT`>(F  
    TSTX   2             0.20000000     0.35349910    -0.19053324 w>9H"Q[  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 P&-D0T_  
    TSTY   1             0.20000000     0.42678383    -0.11724851 L_.xr ?  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 H(5ui`'s  
    TSTX   1             0.20000000     0.42678383    -0.11724851 DS[l,x  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 YfrTvKX  
    TSTY   3             0.20000000     0.42861670    -0.11541563 1S)0 23N  
    y ? {PoNI  
    Estimated Performance Changes based upon Root-Sum-Square method: vBCZ/F[  
    Nominal MTF                 :     0.54403234 &ESR1$)'P  
    Estimated change            :    -0.36299231 NBbY## w0  
    Estimated MTF               :     0.18104003 @6I[{{>X  
    'wT./&Z  
    Compensator Statistics: =?I1V#.  
    Change in back focus: J7 *G/F  
    Minimum            :        -0.000000 1Hk<_no5  
    Maximum            :         0.000000 3' :[i2[  
    Mean               :        -0.000000 :+gCO!9Y  
    Standard Deviation :         0.000000 0=(-8vwd  
    00.iMmJ  
    Monte Carlo Analysis: (X`t"*y"  
    Number of trials: 20 $V{- @=  
    ,mE]?XyO  
    Initial Statistics: Normal Distribution pn_gq~5ng  
    (Aov}I+  
      Trial       Criterion        Change |V~(mS747:  
          1     0.42804416    -0.11598818 d)17r\*>I  
    Change in Focus                :      -0.400171 i>kNz(*  
          2     0.54384387    -0.00018847 qS/71Kv'  
    Change in Focus                :       1.018470 5@%=LPV  
          3     0.44510003    -0.09893230 )8N)Z~h  
    Change in Focus                :      -0.601922 w4< u@L  
          4     0.18154684    -0.36248550 7PQj7&m  
    Change in Focus                :       0.920681 -~Z@,  
          5     0.28665820    -0.25737414 sJYKt   
    Change in Focus                :       1.253875  JY050FL  
          6     0.21263372    -0.33139862 dn.c#,Y  
    Change in Focus                :      -0.903878 EK-bvZ  
          7     0.40051424    -0.14351809 t&Y^W <  
    Change in Focus                :      -1.354815 |)P;%Fy9  
          8     0.48754161    -0.05649072 n.H`1@  
    Change in Focus                :       0.215922 ow>[#.ua  
          9     0.40357468    -0.14045766 8`LLHX1|  
    Change in Focus                :       0.281783 I +4qu|0lA  
         10     0.26315315    -0.28087919 )V+Dqh,-g  
    Change in Focus                :      -1.048393 .n|3A3:  
         11     0.26120585    -0.28282649 Rp@}9qijb  
    Change in Focus                :       1.017611 YWBP'Mo  
         12     0.24033815    -0.30369419 0?4^.N n3  
    Change in Focus                :      -0.109292 !PP?2Ax  
         13     0.37164046    -0.17239188 )mo|.L0  
    Change in Focus                :      -0.692430 MT#[ - M\  
         14     0.48597489    -0.05805744 s)&R W#:X  
    Change in Focus                :      -0.662040 NYV0<z@M2M  
         15     0.21462327    -0.32940907 5A=xFj{  
    Change in Focus                :       1.611296 >8mW-p  
         16     0.43378226    -0.11025008 ])ZJ1QL1  
    Change in Focus                :      -0.640081 ^MWW,`  
         17     0.39321881    -0.15081353 {Z~VO  
    Change in Focus                :       0.914906 QX~72X=(  
         18     0.20692530    -0.33710703 O6/=/-?N=c  
    Change in Focus                :       0.801607 k3|9U'r!c  
         19     0.51374068    -0.03029165 f.xSr!  
    Change in Focus                :       0.947293 u #QSa$P  
         20     0.38013374    -0.16389860 wCEfR!i  
    Change in Focus                :       0.667010 0#[Nfe*  
    ~[X:twidkL  
    Number of traceable Monte Carlo files generated: 20 x?k |i}Q  
    WaO;hy~us  
    Nominal     0.54403234 6I.+c  
    Best        0.54384387    Trial     2 ;>hPHx  
    Worst       0.18154684    Trial     4 %$-3fj7  
    Mean        0.35770970 k}a!lI:  
    Std Dev     0.11156454 YwTtI ID%  
    sVl:EVv  
    "kuBjj2  
    Compensator Statistics: Fe>#}-`  
    Change in back focus: { dx yBDK  
    Minimum            :        -1.354815 D `3yv R  
    Maximum            :         1.611296 oTa+E'q  
    Mean               :         0.161872 =|t1eSzc  
    Standard Deviation :         0.869664 Vblf6qaBs  
    ea;c\84_N  
    90% >       0.20977951               :95_W/l  
    80% >       0.22748071               ]$k m  
    50% >       0.38667627               bX1! fa  
    20% >       0.46553746               #+Gs{iXr  
    10% >       0.50064115                i*rv_G|(Zj  
    -Y,Ibq  
    End of Run. w9?wy#YI  
    -kS5mR  
    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 CMf~Yv  
    8{^GC(W{]  
    {y%O_-C'r  
    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 97 X60<  
    dufHd  
    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                 SaScP  
    80% >       0.22748071                 gKEvgXOj  
    50% >       0.38667627                 3Q6#m3AWY  
    20% >       0.46553746                 >@\-m  
    10% >       0.50064115 !kYmrj**  
    ~#xRoBy3  
    最后这个数值是MTF值呢，还是MTF的公差？ FiH!) 6T  
    g[Y$SgJ  
    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？？？   ZuON@(  
    Kn]WXc|("  
    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  : fE iEy%o  
    90% >       0.20977951                 :|TBsd|/x  
    80% >       0.22748071                 [d}1Cq=_  
    50% >       0.38667627                 u8QX2|  
    20% >       0.46553746                 ^S @b*  
    10% >       0.50064115 d0d2QRX  
    ....... I`l< }M  
    ;'urt /  
    ho. a93  
    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   b%6 _LK[  
    Mode                : Sensitivities ~?FKww|_*J  
    Sampling            : 2 qmGB~N|N  
    Nominal Criterion   : 0.54403234 2_p/1Rs  
    Test Wavelength     : 0.6328 cD]t%`*  
    IN"qJ3<k  
    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？ gg=z.`}  
    IlY,V  
    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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