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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 !x9j~D'C`  
    nU"V@_?\  
    gI A{6,A  
    + ~ro*{3  
    然后添加了默认公差分析，基本没变 f[)_=T+  
    rQNT  
    #80*3vi~F  
    <@C Bc:j0  
    然后运行分析的结果如下： eK"B.q7  
    w;$@</  
    Analysis of Tolerances ZyqTtA!A  
    YBgHX [q  
    File : E:\光学设计资料\zemax练习\f500.ZMX 3Lwl~h!  
    Title: D5X;hd  
    Date : TUE JUN 21 2011 U5mec167  
    ~Z5?\a2Ld  
    Units are Millimeters. ;??wLNdf-  
    All changes are computed using linear differences. sY,!Ir`/`  
    (^g?/i1@d  
    Paraxial Focus compensation only. +j5u[X  
    ?r@euZ&  
    WARNING: Solves should be removed prior to tolerancing. r;w_B%9  
    9d2#=IJm  
    Mnemonics: WfVkewuPo  
    TFRN: Tolerance on curvature in fringes. `$`:PT\Zv4  
    TTHI: Tolerance on thickness. [~)i<V|qJ  
    TSDX: Tolerance on surface decentering in x. =K2Dxu_:  
    TSDY: Tolerance on surface decentering in y. xJ9_#$ngeM  
    TSTX: Tolerance on surface tilt in x (degrees). -"5x? \.{m  
    TSTY: Tolerance on surface tilt in y (degrees). zTY|Z@:  
    TIRR: Tolerance on irregularity (fringes). {xt<`_R  
    TIND: Tolerance on Nd index of refraction. &)Z8Qu  
    TEDX: Tolerance on element decentering in x. 3m4?l ~  
    TEDY: Tolerance on element decentering in y. S>7Zq5*  
    TETX: Tolerance on element tilt in x (degrees). @1P1n8mH]  
    TETY: Tolerance on element tilt in y (degrees). ua:.97~Ym  
    |bDN~c:/  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. +7<{yP6wU  
    XzQ=8r>l  
    WARNING: Boundary constraints on compensators will be ignored. :EyH'v  
    :5?ti  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm > c7/E  
    Mode                : Sensitivities t; n6Q0  
    Sampling            : 2 # RJy  
    Nominal Criterion   : 0.54403234 sXTt )J  
    Test Wavelength     : 0.6328 4:cbasy  
    L4sN)EI  
    ;-=y}DK  
    Fields: XY Symmetric Angle in degrees #s1M>M)  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY @Risab n  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ^g[\.Q  
    >4\V/ I  
    Sensitivity Analysis: uYL6g:]+ZC  
    d^ !3bv*h  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| h. i&[RnX  
    Type                      Value      Criterion        Change          Value      Criterion        Change *wp'`3y}  
    Fringe tolerance on surface 1 zx(j6  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 [ H>MeeR  
    Change in Focus                :      -0.000000                            0.000000 vFb{(gIJ  
    Fringe tolerance on surface 2 YH<F~F _  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 r_xo>y~S  
    Change in Focus                :       0.000000                            0.000000 kVU|k-?2  
    Fringe tolerance on surface 3 /_,~dt  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 = k3O4gE7  
    Change in Focus                :      -0.000000                            0.000000 j`BF k>  
    Thickness tolerance on surface 1 kRiWNEw  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 V@>?lv(\  
    Change in Focus                :       0.000000                            0.000000 U]R?O5K  
    Thickness tolerance on surface 2 n{BC m %  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 (53dl(L?  
    Change in Focus                :       0.000000                           -0.000000 ,_rarU)[J  
    Decenter X tolerance on surfaces 1 through 3 <O5;w  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 &;)~bS(   
    Change in Focus                :       0.000000                            0.000000 `4}!+fXQ  
    Decenter Y tolerance on surfaces 1 through 3 *`}_e)(k  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 cYR6+PKua  
    Change in Focus                :       0.000000                            0.000000 ";s5It  
    Tilt X tolerance on surfaces 1 through 3 (degrees) phXVuQ  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 +1d\ZZA|6&  
    Change in Focus                :       0.000000                            0.000000 +ZRsa`'^  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) TP{a*ke^5,  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 =V5.c+  
    Change in Focus                :       0.000000                            0.000000 :VN<,1s9p^  
    Decenter X tolerance on surface 1 `zzX2R Je  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 %- A8`lf<  
    Change in Focus                :       0.000000                            0.000000 8~HC0o\2  
    Decenter Y tolerance on surface 1 ,xD{A}}V  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 FG#j0#|*  
    Change in Focus                :       0.000000                            0.000000 p~8~EQFj  
    Tilt X tolerance on surface (degrees) 1 u/.s rK!K  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 R1Pnj  
    Change in Focus                :       0.000000                            0.000000 hsqUiB tc6  
    Tilt Y tolerance on surface (degrees) 1 ^<E+7  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ]`. d%Vx  
    Change in Focus                :       0.000000                            0.000000 MT6kJDyLu  
    Decenter X tolerance on surface 2 &]LwK5SR  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 5?O/Aub  
    Change in Focus                :       0.000000                            0.000000 Vj2GK"$v  
    Decenter Y tolerance on surface 2 =rBFMTllM  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ,x Tbt4J  
    Change in Focus                :       0.000000                            0.000000 #Ejly2C,  
    Tilt X tolerance on surface (degrees) 2 vhL&az  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 5)nv  
    Change in Focus                :       0.000000                            0.000000 NWAF4i&$  
    Tilt Y tolerance on surface (degrees) 2 DGd&x^C  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 LpmspIPvf  
    Change in Focus                :       0.000000                            0.000000 B8_l+dXO  
    Decenter X tolerance on surface 3 fwq|8^S@  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 (|[3/_!;v  
    Change in Focus                :       0.000000                            0.000000 vj^U F(X  
    Decenter Y tolerance on surface 3 5z]dA~;*2  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 [CUJA  
    Change in Focus                :       0.000000                            0.000000 .oK7E(QJ  
    Tilt X tolerance on surface (degrees) 3 u^]yz&9V  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 g rfF\_[:  
    Change in Focus                :       0.000000                            0.000000 ]~K&mNo  
    Tilt Y tolerance on surface (degrees) 3 rmabm\QY  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 i;xg[e8.  
    Change in Focus                :       0.000000                            0.000000 JxLH]1b  
    Irregularity of surface 1 in fringes KbUX(9+B  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ##s !-.T  
    Change in Focus                :       0.000000                            0.000000 ;etQ  
    Irregularity of surface 2 in fringes T^nX+;:|  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 xlwsZm{V  
    Change in Focus                :       0.000000                            0.000000 9{TOFjsF  
    Irregularity of surface 3 in fringes I"!gzI`Sd  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 [e}]K:  
    Change in Focus                :       0.000000                            0.000000 bv+e'$U3  
    Index tolerance on surface 1 #!5Nbe  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 7q^/.:wlf  
    Change in Focus                :       0.000000                            0.000000 Tb)x8-0  
    Index tolerance on surface 2 RyhR#  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 b?Jm)  
    Change in Focus                :       0.000000                           -0.000000 kdHql>0  
    <Z__Q  
    Worst offenders: 6=g7|}  
    Type                      Value      Criterion        Change [.Y=~)7FB  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 u!-eP7;7  
    TSTY   2             0.20000000     0.35349910    -0.19053324 gU~)(|Nu.  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 As\5Ze9|  
    TSTX   2             0.20000000     0.35349910    -0.19053324 qnS7z%H8  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 z8!u6odu %  
    TSTY   1             0.20000000     0.42678383    -0.11724851 i4pJIb  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 *Qf }4a0  
    TSTX   1             0.20000000     0.42678383    -0.11724851 YiJu48J  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 <R(2 9QN  
    TSTY   3             0.20000000     0.42861670    -0.11541563 P X0#X=$  
    lC4By,1*  
    Estimated Performance Changes based upon Root-Sum-Square method: EK#m?O:>  
    Nominal MTF                 :     0.54403234 JdRs=#X  
    Estimated change            :    -0.36299231 h0eo:Ahi  
    Estimated MTF               :     0.18104003 ]Bsq?e^  
    64vSJx>u  
    Compensator Statistics: ;MMFF{  
    Change in back focus: UQR"wUiiV  
    Minimum            :        -0.000000 e||_j  
    Maximum            :         0.000000 =_H39)|T  
    Mean               :        -0.000000 OZ" <V^"`  
    Standard Deviation :         0.000000 KwHOV$lD;  
    nGbrWu]w  
    Monte Carlo Analysis: LF~#4)B  
    Number of trials: 20 )q^vitkjup  
    q"Md)?5N  
    Initial Statistics: Normal Distribution y|dXxd9  
    d<Os TA  
      Trial       Criterion        Change C|I 1 m  
          1     0.42804416    -0.11598818 N93E;B  
    Change in Focus                :      -0.400171 Pc7: hu  
          2     0.54384387    -0.00018847 XZInu5(  
    Change in Focus                :       1.018470 PsgzDhRv  
          3     0.44510003    -0.09893230 o W[,EW+u  
    Change in Focus                :      -0.601922 ` Z/ IW  
          4     0.18154684    -0.36248550 5a ~tp'  
    Change in Focus                :       0.920681 l(5-Cr  
          5     0.28665820    -0.25737414 vxeT[/6i  
    Change in Focus                :       1.253875 c7F&~RLC  
          6     0.21263372    -0.33139862 ^ ?=K)  
    Change in Focus                :      -0.903878 pt R  
          7     0.40051424    -0.14351809 fh_ .J[Y.k  
    Change in Focus                :      -1.354815 bIArAS9%  
          8     0.48754161    -0.05649072 wuzz%9;@B  
    Change in Focus                :       0.215922 FJLJ;]`7+  
          9     0.40357468    -0.14045766 9^^#I ~-  
    Change in Focus                :       0.281783 $dP)8_Z2  
         10     0.26315315    -0.28087919 %D r?.e  
    Change in Focus                :      -1.048393 j0~3[dyqU  
         11     0.26120585    -0.28282649 ? iX=2-  
    Change in Focus                :       1.017611 !_9$[Oq~  
         12     0.24033815    -0.30369419 Uot-@|l  
    Change in Focus                :      -0.109292 -W_s]oBg  
         13     0.37164046    -0.17239188  9+QrTO  
    Change in Focus                :      -0.692430 { +2cRr.  
         14     0.48597489    -0.05805744 tA-B3 ]  
    Change in Focus                :      -0.662040 9oP{Al  
         15     0.21462327    -0.32940907 sAoM=n}!  
    Change in Focus                :       1.611296 `t1$Ew<  
         16     0.43378226    -0.11025008 qDM[7q3.  
    Change in Focus                :      -0.640081 pK9^W T@  
         17     0.39321881    -0.15081353 2&0<$>  
    Change in Focus                :       0.914906 XO#)i6}G  
         18     0.20692530    -0.33710703 )$B+ 3f  
    Change in Focus                :       0.801607 #/Fu*0/)`  
         19     0.51374068    -0.03029165 38rZ`O*D  
    Change in Focus                :       0.947293 D:E~yh)$-  
         20     0.38013374    -0.16389860 1fFb 7n~3  
    Change in Focus                :       0.667010 &a_kJ)J  
    C 94@YWs  
    Number of traceable Monte Carlo files generated: 20 <j\;>3Q  
    uX +<`3O  
    Nominal     0.54403234 n[Iu!v\/*  
    Best        0.54384387    Trial     2 <aaDW  
    Worst       0.18154684    Trial     4 ?=!XhU .  
    Mean        0.35770970 r.b6E%D  
    Std Dev     0.11156454 "O[76}I+.q  
    <cv1$ x ~P  
    '$XHRS/q]  
    Compensator Statistics: Bh,)5E^m  
    Change in back focus: +MZO%4  
    Minimum            :        -1.354815 RVnyl`s  
    Maximum            :         1.611296 SMO%sZ]  
    Mean               :         0.161872 Gd-.E7CH!  
    Standard Deviation :         0.869664 Om2X>/V%C  
    G'2=jHzMF  
    90% >       0.20977951               PdH`_/6  
    80% >       0.22748071               M`P]cX)x  
    50% >       0.38667627               %lJiM`a  
    20% >       0.46553746               BZ+ mO  
    10% >       0.50064115                r!$NZ2I  
    tOg 8L2  
    End of Run. k!/ _/^{  
    46Q; F  
    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 V$<G)dwUG5  
    IR dz(~CP  
    %<C G|]W  
    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 6IY}SI0N  
    Ui |a}`c  
    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                 YoF\ MT]W  
    80% >       0.22748071                 h#@4@x{  
    50% >       0.38667627                 )pS_+ZF  
    20% >       0.46553746                 nrS[7~  
    10% >       0.50064115 ~t${=o430  
    2-6.r_  
    最后这个数值是MTF值呢，还是MTF的公差？ XY!{g(  
    #U$YZ#B  
    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？？？   /+4^.Q*  
    %%as>}.  
    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  : gHQPhe#n  
    90% >       0.20977951                 cr76cYq"Q  
    80% >       0.22748071                 1YJ_1VJ  
    50% >       0.38667627                 Q^$ghZ6V  
    20% >       0.46553746                 QuSV&>T\  
    10% >       0.50064115 BCBEX&0hk{  
    ....... %/UV_@x&  
    |RR"'o_E  
    a$C2}  
    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   rpUy$qrRc  
    Mode                : Sensitivities Z8&4z.6_  
    Sampling            : 2 MVeF e\r  
    Nominal Criterion   : 0.54403234 ki\B!<uv  
    Test Wavelength     : 0.6328 X.s*>'  
    t";{1.  
    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？ q^5yk=2fq  
    %Nj #0YF]  
    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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