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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 V'vWz`#  
    kqBZsfF  
    y[m,t}gi  
    TIGtX]`  
    然后添加了默认公差分析，基本没变 ` -_!%m/  
    'rB% a<  
    NY7yk3  
    U WT%0t_T  
    然后运行分析的结果如下： GD4S/fn3  
    yd;e;Bb7*  
    Analysis of Tolerances 9nR\7!_  
    TUfj\d,  
    File : E:\光学设计资料\zemax练习\f500.ZMX -#ZvjEaey  
    Title: Qu|CXUk  
    Date : TUE JUN 21 2011 #8Bh5L!SJ1  
    z:\9t[e4  
    Units are Millimeters. Sgi`&;PF  
    All changes are computed using linear differences. n3iiW \  
    @j\:K<sk  
    Paraxial Focus compensation only. 3RaduN]  
    e a=E/HR-  
    WARNING: Solves should be removed prior to tolerancing. 0:V /z3?  
    W %*#rcdq  
    Mnemonics: }a;xs};X;  
    TFRN: Tolerance on curvature in fringes. @f-:C+(Nsg  
    TTHI: Tolerance on thickness. 5m1J&TZ0  
    TSDX: Tolerance on surface decentering in x. nQc,^A)I  
    TSDY: Tolerance on surface decentering in y. D7hTn@I  
    TSTX: Tolerance on surface tilt in x (degrees). 0GUJc}fgvN  
    TSTY: Tolerance on surface tilt in y (degrees). ~e}JqJ(97  
    TIRR: Tolerance on irregularity (fringes). n{gEIUo#  
    TIND: Tolerance on Nd index of refraction. {w2] Is2F  
    TEDX: Tolerance on element decentering in x. 3L&:  
    TEDY: Tolerance on element decentering in y. mi=mwN%UB  
    TETX: Tolerance on element tilt in x (degrees). _wKwiJs  
    TETY: Tolerance on element tilt in y (degrees). 2 5 \S>  
    ei5YxV6I  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. QP\9#D~  
    I Cc{2l  
    WARNING: Boundary constraints on compensators will be ignored. Ksx-Y"  
    5_(\Cd<#  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm /S]$Hu|  
    Mode                : Sensitivities cKVFykwM  
    Sampling            : 2 Z!g6uV+.5  
    Nominal Criterion   : 0.54403234 Tri\5O0lPs  
    Test Wavelength     : 0.6328 0q5J)l:  
    -lo?16w  
    -DkD*64wu  
    Fields: XY Symmetric Angle in degrees PMAz[w,R~  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY g}W`LIasv  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 u IXA{89  
    H_?rbz}o  
    Sensitivity Analysis: f\2IKpF2  
    27!F B@k-  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| $M}"u [Qq  
    Type                      Value      Criterion        Change          Value      Criterion        Change BHr,jC  
    Fringe tolerance on surface 1 33~MP;  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 'x%gJi#  
    Change in Focus                :      -0.000000                            0.000000 %6[,a  
    Fringe tolerance on surface 2 P&Ke slk  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 rn-bfzoDS  
    Change in Focus                :       0.000000                            0.000000 CQ2vFg3+o  
    Fringe tolerance on surface 3 "AagTFs(i  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 5|rBb[  
    Change in Focus                :      -0.000000                            0.000000 5len} ){  
    Thickness tolerance on surface 1 d`/8Q9tQ  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Ll KO(Q{"  
    Change in Focus                :       0.000000                            0.000000 ?;l@yx  
    Thickness tolerance on surface 2 2G8w&dtu  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 DWU=qD+  
    Change in Focus                :       0.000000                           -0.000000 dqB,i9--  
    Decenter X tolerance on surfaces 1 through 3 E`j' <#V!  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 lc <V_8  
    Change in Focus                :       0.000000                            0.000000 :u7BCV|yr  
    Decenter Y tolerance on surfaces 1 through 3 Ts.2\-+3  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 DZqG7p$u4i  
    Change in Focus                :       0.000000                            0.000000 ^=x/:0  
    Tilt X tolerance on surfaces 1 through 3 (degrees) $q\"d?n  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 li[[AAWVm  
    Change in Focus                :       0.000000                            0.000000 b|_e):V|  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) .'`aX 7{\  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 OkC.e')Vx  
    Change in Focus                :       0.000000                            0.000000 I7_lKr3  
    Decenter X tolerance on surface 1 byI" ?  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 B :%Vq2`  
    Change in Focus                :       0.000000                            0.000000 xuUEJ a&  
    Decenter Y tolerance on surface 1 k<1i.rh  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 f(y+1  
    Change in Focus                :       0.000000                            0.000000 ir6aV|ea!  
    Tilt X tolerance on surface (degrees) 1 ]0>  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 vEfj3+e  
    Change in Focus                :       0.000000                            0.000000 Lyc6nP;F  
    Tilt Y tolerance on surface (degrees) 1 N7s0Ua'-v  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 IFBt#]l0  
    Change in Focus                :       0.000000                            0.000000 6 ZRc|ZQ  
    Decenter X tolerance on surface 2 `i.fm1I]  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 eZ:iW#YF  
    Change in Focus                :       0.000000                            0.000000 )<HvIr(xr  
    Decenter Y tolerance on surface 2 `!cdxKLR  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 d*|RFU  
    Change in Focus                :       0.000000                            0.000000 y CHOg  
    Tilt X tolerance on surface (degrees) 2 4Wgzp51Aq!  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 qeMDC#N  
    Change in Focus                :       0.000000                            0.000000 [.>=> KJ_  
    Tilt Y tolerance on surface (degrees) 2 ~+{*KPiD  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 x=H{Rv  
    Change in Focus                :       0.000000                            0.000000 D zD5n  
    Decenter X tolerance on surface 3 hwM<0Jf   
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 M_!]9#:K7  
    Change in Focus                :       0.000000                            0.000000 HsYzIQLL  
    Decenter Y tolerance on surface 3 !y$##PZ  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ~j[?3E4L}  
    Change in Focus                :       0.000000                            0.000000 6Mk#) ebM  
    Tilt X tolerance on surface (degrees) 3 @{b5x>KX  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 WzFXF{(  
    Change in Focus                :       0.000000                            0.000000 mW]dhY 3X  
    Tilt Y tolerance on surface (degrees) 3 KGOhoiR9:C  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 KGDN)@D  
    Change in Focus                :       0.000000                            0.000000 ;#zteqn  
    Irregularity of surface 1 in fringes J,,V KA&  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 (ORbhjl  
    Change in Focus                :       0.000000                            0.000000 IwYfs]-  
    Irregularity of surface 2 in fringes |-6`S1.  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 K3vZ42n  
    Change in Focus                :       0.000000                            0.000000 0m1V@ 3]7>  
    Irregularity of surface 3 in fringes =( ZOn=IL  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 #8XmOJ"W3k  
    Change in Focus                :       0.000000                            0.000000 I+Fy)=DO9  
    Index tolerance on surface 1 7Wef[N\x  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 &FmTT8"l  
    Change in Focus                :       0.000000                            0.000000 8/p ]'BLf  
    Index tolerance on surface 2 lO\HchG zB  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 PW@ :fM:q  
    Change in Focus                :       0.000000                           -0.000000 |?jgjn&RQ  
    GTB\95j]  
    Worst offenders: 0(d!w*RpG  
    Type                      Value      Criterion        Change w &YUb,{Y  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 .}F 39TS2  
    TSTY   2             0.20000000     0.35349910    -0.19053324 \ o2oQ3  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 nN$.^!;&  
    TSTX   2             0.20000000     0.35349910    -0.19053324 L[44D6Vg  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 ~I N g9|  
    TSTY   1             0.20000000     0.42678383    -0.11724851 .4ww5k>  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Mh3.GpS  
    TSTX   1             0.20000000     0.42678383    -0.11724851 o.Ww .F  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 fwUvFK1G  
    TSTY   3             0.20000000     0.42861670    -0.11541563 '9]?jkl  
    UQkd$w<  
    Estimated Performance Changes based upon Root-Sum-Square method: /*gs]  
    Nominal MTF                 :     0.54403234 ;^s|n)F#c  
    Estimated change            :    -0.36299231 #3ZAMV  
    Estimated MTF               :     0.18104003 -`ljKp  
    "E7<S5 cr  
    Compensator Statistics: D|U bh]  
    Change in back focus: f\?Rhyz  
    Minimum            :        -0.000000 P_jav 0j7g  
    Maximum            :         0.000000 c^"4l 9w  
    Mean               :        -0.000000 |5>A^a  
    Standard Deviation :         0.000000 J|jvqt9C  
    tHaHBx1P  
    Monte Carlo Analysis: +EA ")T<l  
    Number of trials: 20 8=bn TJf  
    ?$)a[UnqX  
    Initial Statistics: Normal Distribution cb'Y a_  
    6VQQI9  
      Trial       Criterion        Change F+VNrt-  
          1     0.42804416    -0.11598818 1 39T*0C  
    Change in Focus                :      -0.400171 x xzUey  
          2     0.54384387    -0.00018847 QNE/SSL  
    Change in Focus                :       1.018470 ;*K;)C  
          3     0.44510003    -0.09893230 [x?9< #T  
    Change in Focus                :      -0.601922 g#fn(A  
          4     0.18154684    -0.36248550 D',7T=C   
    Change in Focus                :       0.920681 ~ecN4Oo4q;  
          5     0.28665820    -0.25737414 @fA| y  
    Change in Focus                :       1.253875 8S#&XS>o  
          6     0.21263372    -0.33139862 +(`D'5EB(  
    Change in Focus                :      -0.903878 G \a`F'Oo  
          7     0.40051424    -0.14351809 HQF@@  
    Change in Focus                :      -1.354815 B.?F^m@zS  
          8     0.48754161    -0.05649072 %qJgtu"8  
    Change in Focus                :       0.215922 KBi(Ns#+  
          9     0.40357468    -0.14045766 {B#w9>'b  
    Change in Focus                :       0.281783 N:'GNMu  
         10     0.26315315    -0.28087919 j+fF$6po#t  
    Change in Focus                :      -1.048393 r 25VcY  
         11     0.26120585    -0.28282649 lO9Ixhf~iu  
    Change in Focus                :       1.017611 %d-WQwJ  
         12     0.24033815    -0.30369419 N?S;v&q+  
    Change in Focus                :      -0.109292 vx6lud0k}  
         13     0.37164046    -0.17239188 a{^ 2c!  
    Change in Focus                :      -0.692430 O)R}|  
         14     0.48597489    -0.05805744 TqS s*as5  
    Change in Focus                :      -0.662040 08AD~^^  
         15     0.21462327    -0.32940907 TSJeS`I  
    Change in Focus                :       1.611296 1foG*   
         16     0.43378226    -0.11025008 7C Sn79E  
    Change in Focus                :      -0.640081 C_ ;nlG6  
         17     0.39321881    -0.15081353 Y1AZ%{^0a  
    Change in Focus                :       0.914906 hb0)<^xu  
         18     0.20692530    -0.33710703 *E>R1bJ8  
    Change in Focus                :       0.801607 SG~HzQ\%  
         19     0.51374068    -0.03029165 @D["#pe,}  
    Change in Focus                :       0.947293 bFG?mG:  
         20     0.38013374    -0.16389860 E!WlQr:b$  
    Change in Focus                :       0.667010 YVHf-uP  
    8)s0$64Ra  
    Number of traceable Monte Carlo files generated: 20  $AZ=;iP-  
    }"RVUYU  
    Nominal     0.54403234 c|'$3dB*  
    Best        0.54384387    Trial     2 37IHn6r\  
    Worst       0.18154684    Trial     4 t0xE&#4  
    Mean        0.35770970 'b[O-6v  
    Std Dev     0.11156454 U7fNA7#x"  
    s LDEa  
    04-@c  
    Compensator Statistics: XdzC/ {G  
    Change in back focus: iBWEZw)  
    Minimum            :        -1.354815 <AJRU l  
    Maximum            :         1.611296 SY.koW  
    Mean               :         0.161872 b{<$OVc  
    Standard Deviation :         0.869664 J_XkQR[Y  
    ?|`n&HrP  
    90% >       0.20977951               wmMn1q0F  
    80% >       0.22748071               AU}|o0Ur  
    50% >       0.38667627               7^@ 1cA=S  
    20% >       0.46553746               gQ{<2u  
    10% >       0.50064115                3*{l^<`:gA  
    I"8Z'<|/\q  
    End of Run. Uw5&.aqn.b  
    ^?q(fK%  
    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 iB~dO @  
    fS8Pi,!  
    4v(?]]X  
    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 1o_Zw.  
    /r&4< @  
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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                 )1YGWr;ykS  
    80% >       0.22748071                 b+dmJ]c  
    50% >       0.38667627                 , d HAD  
    20% >       0.46553746                 Y'}c$*OkI  
    10% >       0.50064115 gxVJH'[V5  
    dJb7d`  
    最后这个数值是MTF值呢，还是MTF的公差？ B>"-8#B[4  
    ;ae6h [  
    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？？？   F"tM?V.|  
     ?f5||^7  
    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  : )Mw 3ZE92  
    90% >       0.20977951                 mZ#IP  
    80% >       0.22748071                 N)YoWA>#bF  
    50% >       0.38667627                 ~A>-tn}O  
    20% >       0.46553746                 e/IVZmUn^  
    10% >       0.50064115 @])}+4D(S  
    ....... d 4;   
    bB.Yq3KI  
    p?+;[!:  
    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   1++Fs  
    Mode                : Sensitivities zm^ 5WH  
    Sampling            : 2 FVoKNaK-  
    Nominal Criterion   : 0.54403234 + oNr c.  
    Test Wavelength     : 0.6328 bKPjxN?!9  
    tqOx8%  
    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？ ~ouRDO  
    78u=Jz6  
    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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