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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 (&1 56 5  
    5 )z'=  
    4C }#lW9  
    sdBB(  
    然后添加了默认公差分析，基本没变 ] Jnrs  
    owzcc-g  
    }BWT21'-Y  
    H}cq|hodn  
    然后运行分析的结果如下： IOY<'t+  
    k!V@Q!>,  
    Analysis of Tolerances  ^+wA,r.  
    1nR\ m+{  
    File : E:\光学设计资料\zemax练习\f500.ZMX 39bw,lRPV  
    Title: Ae* 6&R4  
    Date : TUE JUN 21 2011 =J`M}BBx  
    i|xC#hV  
    Units are Millimeters. ub]s>aqy   
    All changes are computed using linear differences. %-L T56T  
    bh+m_$X~  
    Paraxial Focus compensation only. 0|| 5 r#  
    [ZL<Q  
    WARNING: Solves should be removed prior to tolerancing. A3.*d:A  
    >J_(~{-sNG  
    Mnemonics: bb}Fu/S  
    TFRN: Tolerance on curvature in fringes. K$wxiGg8P  
    TTHI: Tolerance on thickness. t;}`~B  
    TSDX: Tolerance on surface decentering in x. lv#L+}T  
    TSDY: Tolerance on surface decentering in y. ;( (|0Xa  
    TSTX: Tolerance on surface tilt in x (degrees). :Q}Zb,32  
    TSTY: Tolerance on surface tilt in y (degrees). :)F0~Q  
    TIRR: Tolerance on irregularity (fringes). |#sY(1  
    TIND: Tolerance on Nd index of refraction. U^kk0OT^  
    TEDX: Tolerance on element decentering in x. ),lE8A{ H  
    TEDY: Tolerance on element decentering in y. k54b@U52 h  
    TETX: Tolerance on element tilt in x (degrees). ,+v>(h>q  
    TETY: Tolerance on element tilt in y (degrees). -ZoAbp$  
    ]] T,;|B  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. X2`n&JE  
    q}C;~nMD  
    WARNING: Boundary constraints on compensators will be ignored. d wku6lCk  
    @+sYwlA~  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm M4e8PRlI  
    Mode                : Sensitivities C3KAQ U  
    Sampling            : 2 7w}]9wCN?  
    Nominal Criterion   : 0.54403234 P"|-)d  
    Test Wavelength     : 0.6328 H-3*},9  
    sC_doh_M  
    CUx-k|\  
    Fields: XY Symmetric Angle in degrees }Vfc;2  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY S& F;~  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 KB$Y8[  
    C_&ZQlgQ  
    Sensitivity Analysis: @2sr/gX^  
    XdE|7=+s  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| A3|X`X  
    Type                      Value      Criterion        Change          Value      Criterion        Change v!#koqd1y.  
    Fringe tolerance on surface 1 SmV}Wf  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 (8(P12l  
    Change in Focus                :      -0.000000                            0.000000 |P-kyY34  
    Fringe tolerance on surface 2 .SDE6nvbW  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ZQyXzERp  
    Change in Focus                :       0.000000                            0.000000 :Aj[#4-=   
    Fringe tolerance on surface 3 p-h(C'PqF  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 U%)*I~9  
    Change in Focus                :      -0.000000                            0.000000 :ay`Id_tm  
    Thickness tolerance on surface 1 gR wRhA/  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ]Aj5 K  
    Change in Focus                :       0.000000                            0.000000 C|RC9b  
    Thickness tolerance on surface 2 u6 4{w,  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 EJ(z]M`f  
    Change in Focus                :       0.000000                           -0.000000 #<vzQ\~Y  
    Decenter X tolerance on surfaces 1 through 3 IO"q4(&;P4  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 EQX?Zs?C  
    Change in Focus                :       0.000000                            0.000000 ~JB4s%&  
    Decenter Y tolerance on surfaces 1 through 3 %-an\.a.  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 6%&DJBU!  
    Change in Focus                :       0.000000                            0.000000 < Q6  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 5>-~!Mg1  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 j|VX6U   
    Change in Focus                :       0.000000                            0.000000 Ci?RuZ"  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ,#hNHFa'JH  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 |5*:ThC[  
    Change in Focus                :       0.000000                            0.000000 rEj Ez+wu  
    Decenter X tolerance on surface 1 HFX,EE  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 58]t iP"  
    Change in Focus                :       0.000000                            0.000000 Mlo:\ST|  
    Decenter Y tolerance on surface 1 ooj^Z%9P  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 oot kf=  
    Change in Focus                :       0.000000                            0.000000 8< "lEL|  
    Tilt X tolerance on surface (degrees) 1 7=HpEc  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 /U="~{*-R  
    Change in Focus                :       0.000000                            0.000000 v %S$5  
    Tilt Y tolerance on surface (degrees) 1 ZFtN~Tg  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 =_[Ich,}  
    Change in Focus                :       0.000000                            0.000000 *Tq7[v{0*|  
    Decenter X tolerance on surface 2 +XAM2uN5_.  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 x";4)u=  
    Change in Focus                :       0.000000                            0.000000 ~zFwSF  
    Decenter Y tolerance on surface 2 =g)SZK  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 UZo[]$"Q`  
    Change in Focus                :       0.000000                            0.000000 "F?p Y@4  
    Tilt X tolerance on surface (degrees) 2 ]T%wRd5&-  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 B] PG  
    Change in Focus                :       0.000000                            0.000000 aL/7xa  
    Tilt Y tolerance on surface (degrees) 2 rji<g>GQ  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 T5aeO^x  
    Change in Focus                :       0.000000                            0.000000 X + B=?|M  
    Decenter X tolerance on surface 3 -uB*E1|Q  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 =j8g6#'u  
    Change in Focus                :       0.000000                            0.000000 L7N>p4h]Xj  
    Decenter Y tolerance on surface 3 )SfM`W)Y  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 =!=DISPo  
    Change in Focus                :       0.000000                            0.000000 *s!T$oc  
    Tilt X tolerance on surface (degrees) 3 +Rq]_ sDu  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 4qyPjAG  
    Change in Focus                :       0.000000                            0.000000 C`\yc_b9Pf  
    Tilt Y tolerance on surface (degrees) 3 2Iq*7n:v0  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 6}:(m#+  
    Change in Focus                :       0.000000                            0.000000 *!,k`=.([#  
    Irregularity of surface 1 in fringes  !~]'&9  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 .FvIT] k-  
    Change in Focus                :       0.000000                            0.000000 :D:J_{HJ  
    Irregularity of surface 2 in fringes p9eTrFDy?  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 cB2~W%H  
    Change in Focus                :       0.000000                            0.000000 >"D0vj  
    Irregularity of surface 3 in fringes FeJKXYbk<  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 6W)#F O`  
    Change in Focus                :       0.000000                            0.000000 "Wy!,RH  
    Index tolerance on surface 1 4iJ4g%]  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 rM20Y(|  
    Change in Focus                :       0.000000                            0.000000 ?IR+OCAA  
    Index tolerance on surface 2 3#h@,>Z;  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 9iGp0_J  
    Change in Focus                :       0.000000                           -0.000000 BsYJIKfW  
    -V:7j8  
    Worst offenders: UL3u2g;d  
    Type                      Value      Criterion        Change |w.5*]?H  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 8-)@q|  
    TSTY   2             0.20000000     0.35349910    -0.19053324 y9 K'(/  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 kQ.3J.Q5  
    TSTX   2             0.20000000     0.35349910    -0.19053324 B{NGrC`5)  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 \5F {MBx !  
    TSTY   1             0.20000000     0.42678383    -0.11724851 /z4n?&tM  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 .7n`]S/  
    TSTX   1             0.20000000     0.42678383    -0.11724851 { ?]&P  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 :BUr8%l  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ~.Cu,>fV  
    xUDXg*  
    Estimated Performance Changes based upon Root-Sum-Square method: 3NrWt2?  
    Nominal MTF                 :     0.54403234 :qvaI,  
    Estimated change            :    -0.36299231 C 4\Q8uK  
    Estimated MTF               :     0.18104003 'e7;^s  
    S oB6F9  
    Compensator Statistics: e;&fO[ 2  
    Change in back focus: {y|j**NZ  
    Minimum            :        -0.000000 19i [DR  
    Maximum            :         0.000000 [?F]S:/i  
    Mean               :        -0.000000 Og"\@n  
    Standard Deviation :         0.000000 ^j7]> I  
    u=sZFr@m[  
    Monte Carlo Analysis: L_fiE3G|>  
    Number of trials: 20 iuEQ?fp  
    vtXZ`[D,l)  
    Initial Statistics: Normal Distribution ljjnqQ%  
    J\\o# -H  
      Trial       Criterion        Change ^vo]bq7  
          1     0.42804416    -0.11598818 B@,#,-=  
    Change in Focus                :      -0.400171 3NgyF[c  
          2     0.54384387    -0.00018847 Ufe@G\uyI  
    Change in Focus                :       1.018470 G4)X~.Fy  
          3     0.44510003    -0.09893230 ]PZ\N~T  
    Change in Focus                :      -0.601922 \Gy+y`   
          4     0.18154684    -0.36248550 \>  
    Change in Focus                :       0.920681 X=pPkgW  
          5     0.28665820    -0.25737414 i}Cy q  
    Change in Focus                :       1.253875 {_]<mwd  
          6     0.21263372    -0.33139862 .$"69[1H  
    Change in Focus                :      -0.903878 Xldz& &@  
          7     0.40051424    -0.14351809 1)ZdkTF@H  
    Change in Focus                :      -1.354815 Eo_; N c  
          8     0.48754161    -0.05649072 mjbV^^>  
    Change in Focus                :       0.215922 _~uYNvmg  
          9     0.40357468    -0.14045766 [HQ Bx`3TS  
    Change in Focus                :       0.281783 sQ%gf  
         10     0.26315315    -0.28087919 }G 1hB#j  
    Change in Focus                :      -1.048393 *gN)a%9  
         11     0.26120585    -0.28282649 s F3M= uz  
    Change in Focus                :       1.017611 4AuJ1Z  
         12     0.24033815    -0.30369419 GsC4ty  
    Change in Focus                :      -0.109292 e"voXe  
         13     0.37164046    -0.17239188 R?+:Js/  
    Change in Focus                :      -0.692430 `rI[   
         14     0.48597489    -0.05805744  WfkP  
    Change in Focus                :      -0.662040 %1e{"_$O9  
         15     0.21462327    -0.32940907 VseeU;q  
    Change in Focus                :       1.611296 !!UQ,yU  
         16     0.43378226    -0.11025008 C/A~r  
    Change in Focus                :      -0.640081 [7gwJiK  
         17     0.39321881    -0.15081353 Ss#UX_DT_  
    Change in Focus                :       0.914906 S$Fq1  
         18     0.20692530    -0.33710703 3dC ;B@  
    Change in Focus                :       0.801607 Q)}z$h55  
         19     0.51374068    -0.03029165 1IV R4:a  
    Change in Focus                :       0.947293 GYN Lyd)  
         20     0.38013374    -0.16389860 I xE }v%&  
    Change in Focus                :       0.667010 doV+u(J~  
    #"aL M6Cfs  
    Number of traceable Monte Carlo files generated: 20 _ hs\"W  
    f2RIOL,  
    Nominal     0.54403234 J1{ucFa  
    Best        0.54384387    Trial     2 ,5thD  
    Worst       0.18154684    Trial     4 HU+zzTgI  
    Mean        0.35770970 %& b70]S(  
    Std Dev     0.11156454 XpibI3:<  
    J9yB'yE8  
    [49Ae2W`  
    Compensator Statistics: };@J)}  
    Change in back focus: Gu@Znh-D  
    Minimum            :        -1.354815 ]*JH~.p  
    Maximum            :         1.611296 UqZ#mKi  
    Mean               :         0.161872 !0 -[}vvU  
    Standard Deviation :         0.869664 yaKw/vV  
    ad[oor/7|  
    90% >       0.20977951               3eP7vy  
    80% >       0.22748071               Z7Xic5PI{4  
    50% >       0.38667627               WHvU|rJ  
    20% >       0.46553746               D!CuE7}  
    10% >       0.50064115                Ba /^CS  
    w00Ba^W  
    End of Run. ;#Pc^Yzc1  
     = ~^  
    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 O\KSPy7YQ  
    ~ 6-6aYhe  
    _4#&!b6  
    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 Tx\g5rk  
    E5F0C]hq  
    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                 Nu%:7  
    80% >       0.22748071                 78i"3Tm)w  
    50% >       0.38667627                 #RA3 T[A  
    20% >       0.46553746                 ko%B`  
    10% >       0.50064115 HAr_z@#E  
    xFY< ns  
    最后这个数值是MTF值呢，还是MTF的公差？ c&JYbq  
    wuQ>|\Zs  
    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？？？   11Hf)]M   
    "Nn+Zw43  
    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  : Hr$oT=x[  
    90% >       0.20977951                 c#G]3vTdE  
    80% >       0.22748071                 : {9|/a  
    50% >       0.38667627                 hG,gY;&[6  
    20% >       0.46553746                 xX'Uq_ Jv  
    10% >       0.50064115 W7a s =+;X  
    ....... 6Upg\(  
    {/BEO=8q2  
    f=}Mr8W'  
    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   e>t9\vN#bx  
    Mode                : Sensitivities 7atYWz~yG  
    Sampling            : 2 ^+[o +  
    Nominal Criterion   : 0.54403234 dW7dMx  
    Test Wavelength     : 0.6328 nRQIrUNq  
    w c%  
    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？ YLd 5  
    CHpDzG>]4  
    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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