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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 yNN2}\[.  
    74[}AA  
    $==hr^H  
    f,uxoAS  
    然后添加了默认公差分析，基本没变 @\q~OyV  
    x208^=F\\  
    5VPuHY2  
    9B%"7MVn  
    然后运行分析的结果如下： RdY#B;  
    .[_&>@bmrP  
    Analysis of Tolerances :8 )4:4$^  
    >i ~zG6H  
    File : E:\光学设计资料\zemax练习\f500.ZMX > voUh;L  
    Title: -51L!x}1c  
    Date : TUE JUN 21 2011 C<7J5  
    HL!-4kN <$  
    Units are Millimeters. +5HOT{wj  
    All changes are computed using linear differences. |LjCtm)@+  
    :?^(&3;  
    Paraxial Focus compensation only. :c.i Z  
    *Js<VR  
    WARNING: Solves should be removed prior to tolerancing. T-x`ut7c  
    -+4$W{OK*0  
    Mnemonics: r8> q*0~s  
    TFRN: Tolerance on curvature in fringes. 3NJH"amk  
    TTHI: Tolerance on thickness. TfxKvol'  
    TSDX: Tolerance on surface decentering in x. Ri3m438  
    TSDY: Tolerance on surface decentering in y. v EX <9  
    TSTX: Tolerance on surface tilt in x (degrees). x Dr^&rC  
    TSTY: Tolerance on surface tilt in y (degrees). ~/Ry=8   
    TIRR: Tolerance on irregularity (fringes). Gs9jX/ #  
    TIND: Tolerance on Nd index of refraction. dGfWRqS]  
    TEDX: Tolerance on element decentering in x. Fd 91Y  
    TEDY: Tolerance on element decentering in y. E7D^6G&i  
    TETX: Tolerance on element tilt in x (degrees). IQ~()/;3d  
    TETY: Tolerance on element tilt in y (degrees). b"Ulc}$/&  
    LTCjw_<7  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. m7@`POI  
    k+i=0 P0mf  
    WARNING: Boundary constraints on compensators will be ignored. c8Opc"UE  
    |_rj 12.xo  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm q'@UZ$2  
    Mode                : Sensitivities 4 IHl'*D[#  
    Sampling            : 2 ^:q(ksssY  
    Nominal Criterion   : 0.54403234 Q2 edS|  
    Test Wavelength     : 0.6328 K~E]Fkw!;  
    !bY{T#i)k  
    uI%[1`2N-  
    Fields: XY Symmetric Angle in degrees `2Z=Lp  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY $ OR>JnV  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 (+U!# T]'D  
    yA_d${n  
    Sensitivity Analysis: p 2i5/Ly  
    8[Qw8z5-  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ox*Ka]  
    Type                      Value      Criterion        Change          Value      Criterion        Change W=b5{ 6  
    Fringe tolerance on surface 1 zz9.OnZ~  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ?L $KlF Y  
    Change in Focus                :      -0.000000                            0.000000 ,yT4(cMBk?  
    Fringe tolerance on surface 2 TwkzX|  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 HR}c9wy,q\  
    Change in Focus                :       0.000000                            0.000000 :[rx|9M6  
    Fringe tolerance on surface 3 b 9?w _  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 [ wROIvV  
    Change in Focus                :      -0.000000                            0.000000 vJ{\67tK  
    Thickness tolerance on surface 1 r9%W?fEBp  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 [DE8s[i-  
    Change in Focus                :       0.000000                            0.000000 6xOR,p>E  
    Thickness tolerance on surface 2 Y'Af I^K  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 #8RQ7|7b|  
    Change in Focus                :       0.000000                           -0.000000 UxW>hbzr&V  
    Decenter X tolerance on surfaces 1 through 3 8O7JuR  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 SAoqq  
    Change in Focus                :       0.000000                            0.000000 s)L7o)56/  
    Decenter Y tolerance on surfaces 1 through 3 |fA[s7)  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 x;SrJVDN  
    Change in Focus                :       0.000000                            0.000000 ;aF / <r  
    Tilt X tolerance on surfaces 1 through 3 (degrees) <E ^:{J95  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 dV5 $L e#y  
    Change in Focus                :       0.000000                            0.000000 FHD6@{{Gp"  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) AiyjrEa%  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 JE j+>  
    Change in Focus                :       0.000000                            0.000000 l|&nGCW  
    Decenter X tolerance on surface 1 mkWIJH  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 6 Ym[^U  
    Change in Focus                :       0.000000                            0.000000 @M,_mX  
    Decenter Y tolerance on surface 1 A ssf f;  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 n% *u;iG  
    Change in Focus                :       0.000000                            0.000000 0>'1|8+`(z  
    Tilt X tolerance on surface (degrees) 1 m}XI?[!s  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 l5R H~F  
    Change in Focus                :       0.000000                            0.000000 tSm|U<  
    Tilt Y tolerance on surface (degrees) 1 ^qDkSoqC"  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 1"'//0 7  
    Change in Focus                :       0.000000                            0.000000 !98s[)B:  
    Decenter X tolerance on surface 2 k&**f_b  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Rub""Ga  
    Change in Focus                :       0.000000                            0.000000 @wg*~"d  
    Decenter Y tolerance on surface 2 :?S2s Ne2  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 !~ZL  
    Change in Focus                :       0.000000                            0.000000 E u@TCw8@  
    Tilt X tolerance on surface (degrees) 2 :4WwCpgz,  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 \Lc pl-;?  
    Change in Focus                :       0.000000                            0.000000 X+*| nvq]  
    Tilt Y tolerance on surface (degrees) 2 We9mkwK7C  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 1xx-}AIH#  
    Change in Focus                :       0.000000                            0.000000 RJWlG'i  
    Decenter X tolerance on surface 3 XJQ[aU"[]N  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 X{ Nif G  
    Change in Focus                :       0.000000                            0.000000 +zlaYHj  
    Decenter Y tolerance on surface 3 h?TE$&CL?  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 u'N'<(\k  
    Change in Focus                :       0.000000                            0.000000 sFGXW  
    Tilt X tolerance on surface (degrees) 3 :;JJvYIs  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 qH-dT,`"{  
    Change in Focus                :       0.000000                            0.000000 )kkO:j  
    Tilt Y tolerance on surface (degrees) 3 1 t#Tp$  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 *</;:?  
    Change in Focus                :       0.000000                            0.000000 lP@9%L  
    Irregularity of surface 1 in fringes |mK d5[$  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 4];NX  
    Change in Focus                :       0.000000                            0.000000 :n>h[{ o%  
    Irregularity of surface 2 in fringes 8n'C@#{WV  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 "+rX* ~  
    Change in Focus                :       0.000000                            0.000000 YY.;J3C  
    Irregularity of surface 3 in fringes <}UqtD F 0  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 O}D]G%,m  
    Change in Focus                :       0.000000                            0.000000 J|I|3h<T  
    Index tolerance on surface 1 p?!] sO1l  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 bFTWuM  
    Change in Focus                :       0.000000                            0.000000 ;[6u79;I  
    Index tolerance on surface 2 *+J&ebSTN  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 G? [#<W@+  
    Change in Focus                :       0.000000                           -0.000000 F\XzP\  
    5%W3&F6 %  
    Worst offenders: \V&ly/\ )  
    Type                      Value      Criterion        Change ;hKn$' '  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 *|4~ 0w  
    TSTY   2             0.20000000     0.35349910    -0.19053324 bG5c~  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 AQFx>:in  
    TSTX   2             0.20000000     0.35349910    -0.19053324 }X AoMp  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 CUYp(GU  
    TSTY   1             0.20000000     0.42678383    -0.11724851 .AV--oA~  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 u]oS91  
    TSTX   1             0.20000000     0.42678383    -0.11724851 CjO/q)vV  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 !867DX3*  
    TSTY   3             0.20000000     0.42861670    -0.11541563 Ak1f*HGl|  
    |g7E*1Ie  
    Estimated Performance Changes based upon Root-Sum-Square method: ZkK +?:9  
    Nominal MTF                 :     0.54403234 HL_MuyE  
    Estimated change            :    -0.36299231 L ~  
    Estimated MTF               :     0.18104003 *EDzj&  
    PS6G 7  
    Compensator Statistics: zL> nDnL 4  
    Change in back focus: 7u!p.kN  
    Minimum            :        -0.000000 !Hgq7vZG  
    Maximum            :         0.000000 1~_]"Y'  
    Mean               :        -0.000000 Et7AAV*8g  
    Standard Deviation :         0.000000 u2F 3>s  
    $+rdzsf)+/  
    Monte Carlo Analysis: lk+)-J-lj'  
    Number of trials: 20 ))+R*k%  
    aUJ&  
    Initial Statistics: Normal Distribution yCQpqh  
    *Fq Nzly  
      Trial       Criterion        Change KJ~f ~2;  
          1     0.42804416    -0.11598818 gzuM>lf*{  
    Change in Focus                :      -0.400171 \;g{qM 8  
          2     0.54384387    -0.00018847 Ot/Y?=j~  
    Change in Focus                :       1.018470 uT=sDWD :  
          3     0.44510003    -0.09893230 jCy2bE  
    Change in Focus                :      -0.601922 #$#{QEh0}  
          4     0.18154684    -0.36248550 MenI>gd?  
    Change in Focus                :       0.920681 rb9 x||  
          5     0.28665820    -0.25737414 ZL@7Mr!e  
    Change in Focus                :       1.253875 B\4SB  
          6     0.21263372    -0.33139862 #%x4^A9 q  
    Change in Focus                :      -0.903878 lv{Qn~\y&  
          7     0.40051424    -0.14351809 xo?f90+(  
    Change in Focus                :      -1.354815 mjH8q&szf  
          8     0.48754161    -0.05649072  Kp!P/Q{  
    Change in Focus                :       0.215922 2o{Fp7l  
          9     0.40357468    -0.14045766 }-Zfl jj  
    Change in Focus                :       0.281783 ,g/UPK8K=  
         10     0.26315315    -0.28087919 &;,w})  
    Change in Focus                :      -1.048393 f)*}L?  
         11     0.26120585    -0.28282649  g\n@(T$)  
    Change in Focus                :       1.017611 C YnBZ  
         12     0.24033815    -0.30369419 dp+wwNe  
    Change in Focus                :      -0.109292 rj,Sk~0Q  
         13     0.37164046    -0.17239188 U-|g tND  
    Change in Focus                :      -0.692430 :JPI#zZun  
         14     0.48597489    -0.05805744 S6K aw  
    Change in Focus                :      -0.662040 D?9 =q  
         15     0.21462327    -0.32940907 agt7b@-5=  
    Change in Focus                :       1.611296 koaH31Q  
         16     0.43378226    -0.11025008 )0/ D Y  
    Change in Focus                :      -0.640081 @aBZ|8  
         17     0.39321881    -0.15081353 d<#Xqc  
    Change in Focus                :       0.914906 G;, 2cu K  
         18     0.20692530    -0.33710703 T0Y=g n  
    Change in Focus                :       0.801607 o.sa ?*  
         19     0.51374068    -0.03029165 A*@!tz<  
    Change in Focus                :       0.947293 0Wk}d(f  
         20     0.38013374    -0.16389860 Kf(% aDYq  
    Change in Focus                :       0.667010 9t;aJFI  
    Lw-)ijBW  
    Number of traceable Monte Carlo files generated: 20 =TyN"0@  
    |f`!{=?  
    Nominal     0.54403234 (swP#t5S  
    Best        0.54384387    Trial     2 #{<Jm?sU  
    Worst       0.18154684    Trial     4 .XS rLb?  
    Mean        0.35770970 utRvE(IbmV  
    Std Dev     0.11156454 w Gw}a[a  
    o#E z_D[  
    .lRO; D  
    Compensator Statistics: Lt=#tu&d  
    Change in back focus: dB< \X.   
    Minimum            :        -1.354815 !+CRS9\D   
    Maximum            :         1.611296 OHe<U8iu%  
    Mean               :         0.161872 E]"ePdZZ/  
    Standard Deviation :         0.869664 9e.n1  
    5P+3D{  
    90% >       0.20977951               XPb7gd"% W  
    80% >       0.22748071               :m-HHWMN  
    50% >       0.38667627               QNn$`Qz.  
    20% >       0.46553746               #y2="$ V  
    10% >       0.50064115                /ptIxe  
    <gJ|Wee  
    End of Run. U =T[-(:H  
    k g+"Ta[9  
    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 0 R^Xn  
    `W{Ye=|[d#  
    O{LWQ"@y  
    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 L +-B,466  
    O!uX:TE|Q  
    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                 7@|(z:uw  
    80% >       0.22748071                 Qx'a+kLu9  
    50% >       0.38667627                 fHR1ku y  
    20% >       0.46553746                 BX2&tQSp  
    10% >       0.50064115 @N"h,(^  
    + ECV|mkk  
    最后这个数值是MTF值呢，还是MTF的公差？ a'XCT@B  
    Y |n_Ro^~  
    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？？？   <fWho%eOK  
    *+lnAxRa?  
    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  : >=r094<  
    90% >       0.20977951                 ~Se/uL;*  
    80% >       0.22748071                 M I/ 9?B  
    50% >       0.38667627                 \E]s]ft;+  
    20% >       0.46553746                 \CX`PZ><  
    10% >       0.50064115 Gk'J'9*  
    ....... !@p@u;djJ  
    @1^iWM j  
    /'!F \ kz  
    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   UXR$7<D+  
    Mode                : Sensitivities $NT{ssh  
    Sampling            : 2 Y[ a$~n^:n  
    Nominal Criterion   : 0.54403234 li$(oA2  
    Test Wavelength     : 0.6328 oypX.nye_  
    :&9#p% /  
    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？ LmseY(i N  
    w)5eD+n\-  
    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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