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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 3L$_OXx  
    H`/Q hE  
    L8K= Q  
    7n*,L5%?]4  
    然后添加了默认公差分析，基本没变 NG-Wn+W@b  
    ]3tg|? %B  
    P(I`^x  
    ,1'9l)zP  
    然后运行分析的结果如下： ~F8M_  
    )Lht}I ]:  
    Analysis of Tolerances Ov1$7 r@  
    ]>fAV(ix  
    File : E:\光学设计资料\zemax练习\f500.ZMX tx}} Kd  
    Title: %4#,y(dO  
    Date : TUE JUN 21 2011 NvH9?Ek"  
    (vm &&a@  
    Units are Millimeters. w=EUwt  
    All changes are computed using linear differences. h8;B+#f`  
    zoXCMBg[  
    Paraxial Focus compensation only. x\t)uM%  
    T'9I&h%\  
    WARNING: Solves should be removed prior to tolerancing. )(~s-x^\z@  
    8Xpf|? .  
    Mnemonics: \u@4 eBAV  
    TFRN: Tolerance on curvature in fringes. CW*Kd t  
    TTHI: Tolerance on thickness. [:gPp)f,  
    TSDX: Tolerance on surface decentering in x. Y1a[HF^-  
    TSDY: Tolerance on surface decentering in y. }:u" ?v=|j  
    TSTX: Tolerance on surface tilt in x (degrees). 7%?2>t3~  
    TSTY: Tolerance on surface tilt in y (degrees). 9{{QdN8  
    TIRR: Tolerance on irregularity (fringes). 0yW#).D^b  
    TIND: Tolerance on Nd index of refraction. w~J 7|8Y  
    TEDX: Tolerance on element decentering in x. %bo0-lnp  
    TEDY: Tolerance on element decentering in y. C"bG?Mb  
    TETX: Tolerance on element tilt in x (degrees). mG4myQ?$  
    TETY: Tolerance on element tilt in y (degrees). QC7Ceeh]4  
    R;,&s!\<  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. juQ&v>9W)  
    ( ON n{12Q  
    WARNING: Boundary constraints on compensators will be ignored. .`Ey'T_  
    Oo'IeXQ9(  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm UhuEE  
    Mode                : Sensitivities YXE?b@W"  
    Sampling            : 2 yl|?+  
    Nominal Criterion   : 0.54403234 eliT<sw8  
    Test Wavelength     : 0.6328 ~!( (?8"  
    |J: n'}  
    gL%%2 }$  
    Fields: XY Symmetric Angle in degrees oBZ\mk L  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ,|hM`<"?  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 b&:>v9U  
    m0xL'g6F  
    Sensitivity Analysis: d-e6hI4b  
    JCoDe.  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| eQh@.U*S)  
    Type                      Value      Criterion        Change          Value      Criterion        Change *^j'G^n  
    Fringe tolerance on surface 1 hdky:2^3  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 -# 0(Jm'  
    Change in Focus                :      -0.000000                            0.000000 "YU<CO;4VV  
    Fringe tolerance on surface 2 yWI30hW  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 [?rK9I&  
    Change in Focus                :       0.000000                            0.000000 ML6Y_|6 |  
    Fringe tolerance on surface 3 I9S=VFhZ`  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 P%?|V _m  
    Change in Focus                :      -0.000000                            0.000000 ^%(HZ'$wC  
    Thickness tolerance on surface 1 p<b//^   
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 gO>XNXN{  
    Change in Focus                :       0.000000                            0.000000 +/u)/ey  
    Thickness tolerance on surface 2 N ]KS\  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 *|)a@V L  
    Change in Focus                :       0.000000                           -0.000000 <9zzjgzG{c  
    Decenter X tolerance on surfaces 1 through 3 VyQ@. Lm  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 : utY4  
    Change in Focus                :       0.000000                            0.000000 8K: RoR  
    Decenter Y tolerance on surfaces 1 through 3 Co|3k:I 8  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 s"u6po.'  
    Change in Focus                :       0.000000                            0.000000 RmF,x9  
    Tilt X tolerance on surfaces 1 through 3 (degrees) S0,q@LV  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 )xJCH9h  
    Change in Focus                :       0.000000                            0.000000 cd_\?7  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) YU=Q`y[k  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 sVdn>$KXk  
    Change in Focus                :       0.000000                            0.000000 CPJ8G}4  
    Decenter X tolerance on surface 1 GyU9,>|~T  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 &72 ( <  
    Change in Focus                :       0.000000                            0.000000 "Zk# bQ2j  
    Decenter Y tolerance on surface 1 !O;su~7  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 G- _h 2  
    Change in Focus                :       0.000000                            0.000000 s98Jh(~  
    Tilt X tolerance on surface (degrees) 1 E P1f6ps  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 h"~i&T h  
    Change in Focus                :       0.000000                            0.000000 MW^(  
    Tilt Y tolerance on surface (degrees) 1 :bBLP7eyV  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 9W^sq<tR  
    Change in Focus                :       0.000000                            0.000000 Q]44A+M]  
    Decenter X tolerance on surface 2 QaAA@l  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ;/ wl.'GA  
    Change in Focus                :       0.000000                            0.000000 s &4k  
    Decenter Y tolerance on surface 2 6I)[6R  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 --S1p0  
    Change in Focus                :       0.000000                            0.000000 X#;n Gq)5  
    Tilt X tolerance on surface (degrees) 2 8 $5 y]%!  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 c@SNbY4}%  
    Change in Focus                :       0.000000                            0.000000 k2bjBAT  
    Tilt Y tolerance on surface (degrees) 2 Y-Iu&H+\  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 |nOqy&B  
    Change in Focus                :       0.000000                            0.000000 7j,-o  
    Decenter X tolerance on surface 3 DIsK+1  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 { XI0KiE  
    Change in Focus                :       0.000000                            0.000000 G909R>  
    Decenter Y tolerance on surface 3 r4YiXss  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 " V[=U13  
    Change in Focus                :       0.000000                            0.000000 VtP^fM^{  
    Tilt X tolerance on surface (degrees) 3 'SW%EVB  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 }-Ds%L  
    Change in Focus                :       0.000000                            0.000000 9Wu c1#  
    Tilt Y tolerance on surface (degrees) 3 vR"?XqgZ  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 m!22tpb  
    Change in Focus                :       0.000000                            0.000000 n8p vzlj1  
    Irregularity of surface 1 in fringes 'iY~F0U  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 b]0]*<~y  
    Change in Focus                :       0.000000                            0.000000 )2z<5 `  
    Irregularity of surface 2 in fringes z6IOVQ*r  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047  W8blHw"  
    Change in Focus                :       0.000000                            0.000000 8k( zU>^  
    Irregularity of surface 3 in fringes 8+f{ /  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 }n Ea9h  
    Change in Focus                :       0.000000                            0.000000 `Wl_yC_*G;  
    Index tolerance on surface 1 G_m$?0\  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 HbI'n,+  
    Change in Focus                :       0.000000                            0.000000 saRYd{%+  
    Index tolerance on surface 2 /b1+ ^|_  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 n%faD  
    Change in Focus                :       0.000000                           -0.000000 -R]Iu\  
    ;\]& k  
    Worst offenders: N!PPL"5z  
    Type                      Value      Criterion        Change 1 5heLnei  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 I`~Giz7@  
    TSTY   2             0.20000000     0.35349910    -0.19053324 9T\uOaC"  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 "|Ke/0rGB  
    TSTX   2             0.20000000     0.35349910    -0.19053324 %nS(>X<B  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 JpRn)e'Z  
    TSTY   1             0.20000000     0.42678383    -0.11724851 m/e*P*\ =  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 AZ9;6Df  
    TSTX   1             0.20000000     0.42678383    -0.11724851 QkFB \v  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 0&~ JC>S  
    TSTY   3             0.20000000     0.42861670    -0.11541563 <~ Dq8If  
    l`bl^~xRo  
    Estimated Performance Changes based upon Root-Sum-Square method: ;tJ}*!z W  
    Nominal MTF                 :     0.54403234 pqCp>BO?O  
    Estimated change            :    -0.36299231 sck.2-f"  
    Estimated MTF               :     0.18104003 HUFm@?  
    |C"zK  
    Compensator Statistics: _v#Vf*#  
    Change in back focus: b F MBIA|  
    Minimum            :        -0.000000 bA-/"'Vp9  
    Maximum            :         0.000000 aMJW__,  
    Mean               :        -0.000000  erQQ_  
    Standard Deviation :         0.000000 U!GfDt  
    qEvbKy}  
    Monte Carlo Analysis: 4C#r=Uw`  
    Number of trials: 20 |2Y/l~  
    aD&4C -,1  
    Initial Statistics: Normal Distribution 6Y%{ YQ}s|  
    ~} 02q5H  
      Trial       Criterion        Change ~eZ]LW])  
          1     0.42804416    -0.11598818 ,bxGd!&{Q  
    Change in Focus                :      -0.400171 j0b>n#e7  
          2     0.54384387    -0.00018847 !C;$5(k  
    Change in Focus                :       1.018470 { .j030Q  
          3     0.44510003    -0.09893230 S l`F`  
    Change in Focus                :      -0.601922 ~<Z7\yS)  
          4     0.18154684    -0.36248550 aKFY&zN?  
    Change in Focus                :       0.920681 a)8;P7  
          5     0.28665820    -0.25737414 v@d]*TG  
    Change in Focus                :       1.253875 eJ0Xfw%y%T  
          6     0.21263372    -0.33139862 Qp;FVUw9  
    Change in Focus                :      -0.903878 V2S HF  
          7     0.40051424    -0.14351809 1{<r~  
    Change in Focus                :      -1.354815 &X6hOc:``\  
          8     0.48754161    -0.05649072 VBtdx`9  
    Change in Focus                :       0.215922 C)mR~Ey  
          9     0.40357468    -0.14045766 Zg4kO;r08  
    Change in Focus                :       0.281783 sE])EwZ  
         10     0.26315315    -0.28087919 O'{g{  
    Change in Focus                :      -1.048393 d}2(G2z^  
         11     0.26120585    -0.28282649 (j-_iOQ]i+  
    Change in Focus                :       1.017611 eUKl(  
         12     0.24033815    -0.30369419 489xoP  
    Change in Focus                :      -0.109292 48,uO !  
         13     0.37164046    -0.17239188 2BO&OX|X  
    Change in Focus                :      -0.692430 9DmFa5E  
         14     0.48597489    -0.05805744 ]m :Y|,:6  
    Change in Focus                :      -0.662040 h-]c   
         15     0.21462327    -0.32940907 XFv^j SF  
    Change in Focus                :       1.611296 uE}$ZBi q  
         16     0.43378226    -0.11025008 GvBmh.  
    Change in Focus                :      -0.640081 y q!{\@-  
         17     0.39321881    -0.15081353  (F&o!W  
    Change in Focus                :       0.914906 AHU =`z  
         18     0.20692530    -0.33710703 t pa<)\7KJ  
    Change in Focus                :       0.801607 b"nD5r  
         19     0.51374068    -0.03029165 B2Kh~Xd  
    Change in Focus                :       0.947293 bs'hA@r  
         20     0.38013374    -0.16389860 \[d~O>k2  
    Change in Focus                :       0.667010 lf\^!E:  
    *mkVk7]c  
    Number of traceable Monte Carlo files generated: 20 -6xh  
    c=D~hzN  
    Nominal     0.54403234 IN,=v+A  
    Best        0.54384387    Trial     2 r%9=75HA  
    Worst       0.18154684    Trial     4 Fd#Zu.Np  
    Mean        0.35770970 MvTp%d.  
    Std Dev     0.11156454 V0G[f}tm'  
    dwouw*8  
    !8YA1 o  
    Compensator Statistics: 7M~/[f7Z{  
    Change in back focus: abp\Ih^b  
    Minimum            :        -1.354815 }tQ^ch;Q  
    Maximum            :         1.611296 *=P*b|P"$  
    Mean               :         0.161872 Fw8b^ew  
    Standard Deviation :         0.869664 \zeuvD  
    !AG {`[b  
    90% >       0.20977951               pq:[`   
    80% >       0.22748071               2$'bOo  
    50% >       0.38667627               L^=G(op*  
    20% >       0.46553746               o?^Rw*u0/  
    10% >       0.50064115                -@XOe&q  
    +p$lVnAt  
    End of Run. B}J0 d  
    @aP1[(m  
    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 >uYU_/y$2  
    wG73GD38  
    HM#|&_gV  
    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 B=%x#em  
    j.[W] EfL~  
    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                 >nvnU`\  
    80% >       0.22748071                 skU }BUK6  
    50% >       0.38667627                 C=IN "  
    20% >       0.46553746                 R}IuMMx  
    10% >       0.50064115 ^Pah\p4bj  
    `Y^l.%AZZ  
    最后这个数值是MTF值呢，还是MTF的公差？ +(W7hK4ip  
    3`)ej`  
    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？？？   c`/=)IO4%  
    oS}fr?  
    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  : Xr'b{&  
    90% >       0.20977951                 UX<)hvKj  
    80% >       0.22748071                 Hl'AnxE  
    50% >       0.38667627                 N R 4\TU  
    20% >       0.46553746                 7$t['2j3  
    10% >       0.50064115 ]0[ot$Da6  
    ....... g!o2vTt5  
    euW   
    ^HtB!Xc  
    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   a2kAZCQ  
    Mode                : Sensitivities &A`,hF8  
    Sampling            : 2 |.&GmP  
    Nominal Criterion   : 0.54403234 ,?Zy4-  
    Test Wavelength     : 0.6328 V<;_wO^  
    r4fg!]J ;  
    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？ G;ZN>8NB  
    :}/\hz ,  
    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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