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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 _$lQK{@rY  
    LJ#P- `!{&  
    IbQ~f+y&2  
    nxRrmR}F  
    然后添加了默认公差分析，基本没变 &y?B&4|hM  
    #-,`4x$m|  
    o~>go_Y  
    b=l}|)a  
    然后运行分析的结果如下： wfzb:Aig`  
    ,DZLEsFM  
    Analysis of Tolerances g >oLc6T  
    "MN'%"/  
    File : E:\光学设计资料\zemax练习\f500.ZMX o%5Ao?z~  
    Title: S"z4jpqn3  
    Date : TUE JUN 21 2011 @vh>GiR){  
    DF =. G1  
    Units are Millimeters. S5!2%-;<k  
    All changes are computed using linear differences. V> SA3  
    )Me&xQTn  
    Paraxial Focus compensation only. xFnMXh t  
    Pl6=._  
    WARNING: Solves should be removed prior to tolerancing. v836nxLM  
     S_6;e|  
    Mnemonics: s1q d/  
    TFRN: Tolerance on curvature in fringes. *k$&Hcr$  
    TTHI: Tolerance on thickness. Q+dI,5YF  
    TSDX: Tolerance on surface decentering in x. _v,n~a}&  
    TSDY: Tolerance on surface decentering in y. df\>-Hl  
    TSTX: Tolerance on surface tilt in x (degrees). LlqhZetS  
    TSTY: Tolerance on surface tilt in y (degrees). i[n 1}E.@  
    TIRR: Tolerance on irregularity (fringes). B~rK3BS  
    TIND: Tolerance on Nd index of refraction. ha 5\T'  
    TEDX: Tolerance on element decentering in x. >?KyPp  
    TEDY: Tolerance on element decentering in y. R4;6Oi)  
    TETX: Tolerance on element tilt in x (degrees). ^Pwq`G A  
    TETY: Tolerance on element tilt in y (degrees). }OFk.6{{&v  
    `^[ra% a  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. &aOOG8l  
    3 Gkw.  
    WARNING: Boundary constraints on compensators will be ignored. C5z4%,`f  
    70~]J8T+u  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm oJy/PR 3  
    Mode                : Sensitivities ~Ua0pS?  
    Sampling            : 2 _De;SB %V  
    Nominal Criterion   : 0.54403234 _6( =0::x  
    Test Wavelength     : 0.6328 #oI`j q  
    v\vn}/>*d  
    :08UeEy  
    Fields: XY Symmetric Angle in degrees V ALYA=w/  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY mx2 Jt1  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 }$ der  
    dXhV]xK  
    Sensitivity Analysis: (%1*<6ka  
    AXFVsZH"zi  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| Kt(p|  
    Type                      Value      Criterion        Change          Value      Criterion        Change hSmM OS{  
    Fringe tolerance on surface 1 B!0[LlF+  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 -}s?!Pg>  
    Change in Focus                :      -0.000000                            0.000000 QHK$  
    Fringe tolerance on surface 2 ORNE>6J H  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 6._):[_2  
    Change in Focus                :       0.000000                            0.000000 &* iiQ3  
    Fringe tolerance on surface 3 Rk<:m+V=  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 [B Al  
    Change in Focus                :      -0.000000                            0.000000 V#gXchH[L  
    Thickness tolerance on surface 1 ]@EjKgs  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 53A=O gk8S  
    Change in Focus                :       0.000000                            0.000000 \c)XN<HH  
    Thickness tolerance on surface 2 |d$aIS O`  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 vs +N{ V  
    Change in Focus                :       0.000000                           -0.000000 hwJ.M4  
    Decenter X tolerance on surfaces 1 through 3 M6>l%[  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005  2B#WWb  
    Change in Focus                :       0.000000                            0.000000 2B# \683  
    Decenter Y tolerance on surfaces 1 through 3 PNq#o%q  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 %zGPF  
    Change in Focus                :       0.000000                            0.000000 `#hy'S:e  
    Tilt X tolerance on surfaces 1 through 3 (degrees) Tn|re Xc0e  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 <7XdT  
    Change in Focus                :       0.000000                            0.000000 pR $c<p  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) zI(Pti  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 eUl[gHP  
    Change in Focus                :       0.000000                            0.000000 ^,3 >}PU  
    Decenter X tolerance on surface 1 IKt9=Tx  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ;iEqa"gO  
    Change in Focus                :       0.000000                            0.000000 =o {`vv  
    Decenter Y tolerance on surface 1 "3K0 wR5  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 F~ :5/-zs  
    Change in Focus                :       0.000000                            0.000000 <NUZPX29  
    Tilt X tolerance on surface (degrees) 1 NJ~'`{3v  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 W\Gg!XsLk  
    Change in Focus                :       0.000000                            0.000000 FUQT,7CA  
    Tilt Y tolerance on surface (degrees) 1 C]k\GlhB  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 uzS57 O%  
    Change in Focus                :       0.000000                            0.000000 9wYbY* j  
    Decenter X tolerance on surface 2 c;WS !.  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Q{%ow:;s*  
    Change in Focus                :       0.000000                            0.000000 t6tqv  
    Decenter Y tolerance on surface 2 m+L:\mvA  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 )}EwEM  
    Change in Focus                :       0.000000                            0.000000 7M4iBk4I  
    Tilt X tolerance on surface (degrees) 2 90q*V%cS  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 up`6IWlLE  
    Change in Focus                :       0.000000                            0.000000 3cnsJV]  
    Tilt Y tolerance on surface (degrees) 2 TnC'<zm9 !  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 FIuKX"XR  
    Change in Focus                :       0.000000                            0.000000 N7NK1<vw2  
    Decenter X tolerance on surface 3 3TJNlS  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 v;OA hFr|  
    Change in Focus                :       0.000000                            0.000000 $wBUu   
    Decenter Y tolerance on surface 3 7':|f"  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 iaMZ37  
    Change in Focus                :       0.000000                            0.000000 f}fM%0/5  
    Tilt X tolerance on surface (degrees) 3 ]UNmhF!W>u  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 !l}es4~.a  
    Change in Focus                :       0.000000                            0.000000 wBr0s *1I  
    Tilt Y tolerance on surface (degrees) 3  ;HW@ZI  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Ft07>E$/Q^  
    Change in Focus                :       0.000000                            0.000000 //`X+[bMG  
    Irregularity of surface 1 in fringes 3o1j l2n  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 |{$Vk%cUE  
    Change in Focus                :       0.000000                            0.000000 $(GXlhA  
    Irregularity of surface 2 in fringes H7uW|'XWz  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 9Gy1T3y5"  
    Change in Focus                :       0.000000                            0.000000 rT x]%{  
    Irregularity of surface 3 in fringes oRCj]9I$  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 I!{5*~ 3  
    Change in Focus                :       0.000000                            0.000000 4kIy4x'*  
    Index tolerance on surface 1 Tfj%Sb,zM  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Cjw|.c`  
    Change in Focus                :       0.000000                            0.000000 um[.r,++  
    Index tolerance on surface 2 Hi )n]OE  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 WXJ%bH  
    Change in Focus                :       0.000000                           -0.000000 W&* 0F~  
    z+;+c$X  
    Worst offenders: /: B!hvpw  
    Type                      Value      Criterion        Change /WfpA\4S  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 tYVmB:l  
    TSTY   2             0.20000000     0.35349910    -0.19053324 SoCa_9*X  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 d^ w6_  
    TSTX   2             0.20000000     0.35349910    -0.19053324 /CH*5w)1   
    TSTY   1            -0.20000000     0.42678383    -0.11724851 Z/O5Dear/h  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Z[ys>\_To  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 X'O3)Yg  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Lb(=:Z!{  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 @<h@d_8^k  
    TSTY   3             0.20000000     0.42861670    -0.11541563 o4U9jU4<"  
    wPyfne?~,  
    Estimated Performance Changes based upon Root-Sum-Square method: c!b4Y4eJ  
    Nominal MTF                 :     0.54403234 iOw'NxmY  
    Estimated change            :    -0.36299231 :Oxrw5`=  
    Estimated MTF               :     0.18104003 4v Ug:'DM  
    {ymD.vf=9+  
    Compensator Statistics: a:C ly9  
    Change in back focus: $vx]\` ^  
    Minimum            :        -0.000000 uq'T:d  
    Maximum            :         0.000000 H}`}qu #~V  
    Mean               :        -0.000000 Rkgpa/te"  
    Standard Deviation :         0.000000 %R."  
    sZ_+6+ :  
    Monte Carlo Analysis: [8[g_  
    Number of trials: 20 I vO#tI  
    ,-D3tleu`  
    Initial Statistics: Normal Distribution *{ 6{ZKM  
    Zh,(/-XN;  
      Trial       Criterion        Change r761vtC#  
          1     0.42804416    -0.11598818 :hC+r=!I  
    Change in Focus                :      -0.400171 &Yb!j  
          2     0.54384387    -0.00018847 uS;N&6;:  
    Change in Focus                :       1.018470 )k$ +T%  
          3     0.44510003    -0.09893230 t 7dcaNBZ  
    Change in Focus                :      -0.601922 D&#wn.0|E  
          4     0.18154684    -0.36248550 ^O}`i  
    Change in Focus                :       0.920681 Q3T@=z2j%  
          5     0.28665820    -0.25737414 t[ cHdI  
    Change in Focus                :       1.253875 MDAJ p>o  
          6     0.21263372    -0.33139862 {%gMA?b|"  
    Change in Focus                :      -0.903878 WWZ`RY  
          7     0.40051424    -0.14351809 0w)Gb}o$  
    Change in Focus                :      -1.354815 },+ &y^  
          8     0.48754161    -0.05649072  b"iPuN!p  
    Change in Focus                :       0.215922 ^zn&"@  
          9     0.40357468    -0.14045766 E+)3n[G  
    Change in Focus                :       0.281783 R.^ Y'TLyc  
         10     0.26315315    -0.28087919 Qq+$ea?>  
    Change in Focus                :      -1.048393 B:;$5PUTc  
         11     0.26120585    -0.28282649 u7L&cx  
    Change in Focus                :       1.017611 SJ8Ax_9{q  
         12     0.24033815    -0.30369419 ,v,#f .  
    Change in Focus                :      -0.109292 grrM[Y7#~b  
         13     0.37164046    -0.17239188 F=EG#<@u  
    Change in Focus                :      -0.692430 Ce_k&[AJF  
         14     0.48597489    -0.05805744 pr-=<[ d  
    Change in Focus                :      -0.662040 9X/]O<i,Es  
         15     0.21462327    -0.32940907 mBN+c9n/  
    Change in Focus                :       1.611296 %?2y2O ,;  
         16     0.43378226    -0.11025008 gjFpM.D-.  
    Change in Focus                :      -0.640081 3127 4O  
         17     0.39321881    -0.15081353 7 x#QkImQ  
    Change in Focus                :       0.914906 P@| W \  
         18     0.20692530    -0.33710703 W-D{ cU  
    Change in Focus                :       0.801607 (P'{A>aHl0  
         19     0.51374068    -0.03029165 As{"B  
    Change in Focus                :       0.947293 n37P$0  
         20     0.38013374    -0.16389860 O pavno%&  
    Change in Focus                :       0.667010 < #FxI  
    N(s5YX7<hd  
    Number of traceable Monte Carlo files generated: 20 Q-<h)WTA  
    lV".-:u_  
    Nominal     0.54403234 =hY9lxW  
    Best        0.54384387    Trial     2 #K&XY6cTj  
    Worst       0.18154684    Trial     4 '9u(9S  
    Mean        0.35770970 0#Ae<  
    Std Dev     0.11156454 \~X:ffb =  
    hU'h78bt(  
    {f"oqry_g  
    Compensator Statistics: YC[c QX  
    Change in back focus: Q%r KKOX8  
    Minimum            :        -1.354815 Lo,uH`qU  
    Maximum            :         1.611296 \Vb|bw'e(  
    Mean               :         0.161872 QZ& 4W  
    Standard Deviation :         0.869664  gx9=L&=d  
    2Y>#FEW/  
    90% >       0.20977951               Y[!s:3\f  
    80% >       0.22748071               { k>T*/  
    50% >       0.38667627               []:&WA 9N  
    20% >       0.46553746               7?ICXhu9  
    10% >       0.50064115                ;W{2\ Es  
    P](/5KrK  
    End of Run. l=UXikx  
    Z\r?>2  
    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 9CG&MvF c  
    G4rd<V0[D  
    S ^]mF>xX8  
    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 7bk`u'0%  
    +I3j 2u8L  
    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                 qND:LP\_v  
    80% >       0.22748071                 (y s<{Y-;  
    50% >       0.38667627                 <m/XGFc  
    20% >       0.46553746                 VIaj])m  
    10% >       0.50064115 Z.`0  
    ;OC{B}.vH  
    最后这个数值是MTF值呢，还是MTF的公差？ E~c>j<'-"<  
    d*x&Uh[K  
    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？？？   YJ+l \Wb}  
    0a9[}g1=#  
    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  : 6\Tq,I7  
    90% >       0.20977951                 _Ea1;dJmq  
    80% >       0.22748071                 5=fS^]- F  
    50% >       0.38667627                 og_ylCh:  
    20% >       0.46553746                 Nrq/Pkmy  
    10% >       0.50064115 ti3S'K0t  
    ....... 7q{yLcC"  
    ;&!Q N#_  
    4pZKm-dM^  
    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   i2-]Xl  
    Mode                : Sensitivities s){VU2.ra  
    Sampling            : 2 MwL!2r  
    Nominal Criterion   : 0.54403234 m8eoD{  
    Test Wavelength     : 0.6328 uL:NWgN  
    -S&d5(R  
    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？ jw/@]f;N  
    :.f( }sCS  
    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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