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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 ih1SN,/  
    tQ=U22&7  
    m"+9[d_u  
    B8w 0DJ  
    然后添加了默认公差分析，基本没变 qx`*]lX  
    o{zo-:>Jp  
    _CI!7%  
    oSy[/Y44a  
    然后运行分析的结果如下： 0YIvE\-  
    (Ptv#LSUX  
    Analysis of Tolerances UyK|KL  
    w6#hsRq[C  
    File : E:\光学设计资料\zemax练习\f500.ZMX B8B^@   
    Title: $!KV]]  
    Date : TUE JUN 21 2011 i~l0XjQbs  
    WW==  
    Units are Millimeters. LD^V="d  
    All changes are computed using linear differences. 4y)"IOd#|  
    dw Aju:-H  
    Paraxial Focus compensation only. A")B<BK  
    6 D~b9 e  
    WARNING: Solves should be removed prior to tolerancing. KY4|C05 ,  
    #^Sd r-   
    Mnemonics: )v ['p  
    TFRN: Tolerance on curvature in fringes. -Z6ot{%  
    TTHI: Tolerance on thickness. C=9|K`g5 R  
    TSDX: Tolerance on surface decentering in x. s*(Y<Ap7d  
    TSDY: Tolerance on surface decentering in y. hc~--[1c:  
    TSTX: Tolerance on surface tilt in x (degrees). |\N[EM%.@  
    TSTY: Tolerance on surface tilt in y (degrees). qw"`NubX  
    TIRR: Tolerance on irregularity (fringes). WR~uy|mX  
    TIND: Tolerance on Nd index of refraction. 3haY{CEr  
    TEDX: Tolerance on element decentering in x. HOu<,9?>Q  
    TEDY: Tolerance on element decentering in y. r=qb[4HiV  
    TETX: Tolerance on element tilt in x (degrees). f]o DZO%^  
    TETY: Tolerance on element tilt in y (degrees). y;#p=,r  
    xNq&_oY7  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 1Qf5H!5vx  
    #sNa}292"  
    WARNING: Boundary constraints on compensators will be ignored. WWq)Cw R  
    ~v+& ?dg  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm cWh Aj>?_Q  
    Mode                : Sensitivities eFZ`0V0  
    Sampling            : 2 u4+)lvt  
    Nominal Criterion   : 0.54403234 oPre$YT}h  
    Test Wavelength     : 0.6328 Ep?a1&b  
    0~n= |3*P  
    y>Nlj%XH  
    Fields: XY Symmetric Angle in degrees ;~/  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY V^?+|8_(  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 6OIA>%{  
    %{o5 }TqD  
    Sensitivity Analysis: a>""MC2  
    T[ky7\  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| "$ u"Py  
    Type                      Value      Criterion        Change          Value      Criterion        Change -41L^Di\  
    Fringe tolerance on surface 1 r1F5&?{q  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 1v,4[;{  
    Change in Focus                :      -0.000000                            0.000000 9$#2+G!J  
    Fringe tolerance on surface 2 \n+`~< i  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 0/-[k  
    Change in Focus                :       0.000000                            0.000000 !m]76=@  
    Fringe tolerance on surface 3 H(n_g QAX  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 {N7,=(-2=  
    Change in Focus                :      -0.000000                            0.000000 &=_YL  
    Thickness tolerance on surface 1 ,uDB ]  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 QN*'MA"M  
    Change in Focus                :       0.000000                            0.000000 U .e Urzu  
    Thickness tolerance on surface 2 Q.vtU%T  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 o7hjx hmC  
    Change in Focus                :       0.000000                           -0.000000 Z$6W)~;,  
    Decenter X tolerance on surfaces 1 through 3 @GjWeOj]  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 B4U+q|OD#  
    Change in Focus                :       0.000000                            0.000000 H( cY=d,  
    Decenter Y tolerance on surfaces 1 through 3 X0P<ifIv  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Udd|.JRd  
    Change in Focus                :       0.000000                            0.000000 :5C9uW #  
    Tilt X tolerance on surfaces 1 through 3 (degrees) 7j._3'M=Kc  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 #l{qb]n]  
    Change in Focus                :       0.000000                            0.000000 ]FsPlxk6  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 97<Y. 0  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 2/(gf[elX  
    Change in Focus                :       0.000000                            0.000000 W 4 )^8/  
    Decenter X tolerance on surface 1 =`.9V<  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 FnL~8otPF'  
    Change in Focus                :       0.000000                            0.000000 Wp T.25  
    Decenter Y tolerance on surface 1 D Q~+\  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 MPNBA1s  
    Change in Focus                :       0.000000                            0.000000 se7_:0+w  
    Tilt X tolerance on surface (degrees) 1 \s+ <w3  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 %Z.>)R4  
    Change in Focus                :       0.000000                            0.000000 <fN?=u+  
    Tilt Y tolerance on surface (degrees) 1 rS6iZp,  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 a-8~f8na{(  
    Change in Focus                :       0.000000                            0.000000 ioh_5 5e  
    Decenter X tolerance on surface 2 -u)06C*39  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 7F.>M  
    Change in Focus                :       0.000000                            0.000000 [,G]#<G?q  
    Decenter Y tolerance on surface 2 a Se.]_  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 8Ck:c45v  
    Change in Focus                :       0.000000                            0.000000 zBqr15  
    Tilt X tolerance on surface (degrees) 2 [=..#y!U  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 [wIyW/+  
    Change in Focus                :       0.000000                            0.000000 ZLo3 0*  
    Tilt Y tolerance on surface (degrees) 2 tA'i-D&  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ezHj?@  
    Change in Focus                :       0.000000                            0.000000 vC+mC4~/(  
    Decenter X tolerance on surface 3 g/JAr<  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 2lXsD;[  
    Change in Focus                :       0.000000                            0.000000 sm\/wlbE  
    Decenter Y tolerance on surface 3 NE3G!qxL  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Y5Ey%M m6  
    Change in Focus                :       0.000000                            0.000000 $c  f?`k  
    Tilt X tolerance on surface (degrees) 3 }2DeqY  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ${e(#bvGZ  
    Change in Focus                :       0.000000                            0.000000 LF{qI?LG  
    Tilt Y tolerance on surface (degrees) 3 bNIT 1'v  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 bncK8SK  
    Change in Focus                :       0.000000                            0.000000 "ve?7&G7U  
    Irregularity of surface 1 in fringes %l3RM*zb  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 t1IC0'o-  
    Change in Focus                :       0.000000                            0.000000 O(WFjmHx  
    Irregularity of surface 2 in fringes h :NHReMT  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 69q8t*%O  
    Change in Focus                :       0.000000                            0.000000 &t p5y}=n  
    Irregularity of surface 3 in fringes 0nhsjN}v  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 G|Q}.v  
    Change in Focus                :       0.000000                            0.000000 AGrGZ7p]  
    Index tolerance on surface 1 l\MiG Na  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ?;uzx7@F  
    Change in Focus                :       0.000000                            0.000000 vP&*(WfO)  
    Index tolerance on surface 2 '[Nu;(>a  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 0Dh a1[=  
    Change in Focus                :       0.000000                           -0.000000 7e}p:Vfp  
    US> m1KsX  
    Worst offenders: B-M|}T  
    Type                      Value      Criterion        Change )Tb{O  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 $OjsaE %  
    TSTY   2             0.20000000     0.35349910    -0.19053324 MZL~IX  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 vi lNl|  
    TSTX   2             0.20000000     0.35349910    -0.19053324 SOP= X-6f  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 G-,PsXSwe  
    TSTY   1             0.20000000     0.42678383    -0.11724851 nc$?tC9V  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 [C7:Yg7  
    TSTX   1             0.20000000     0.42678383    -0.11724851 :q6hT<f;  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 '7_'s1  
    TSTY   3             0.20000000     0.42861670    -0.11541563 zxwpS  
    5Vut4px  
    Estimated Performance Changes based upon Root-Sum-Square method: _$Z46wHmB  
    Nominal MTF                 :     0.54403234 {9C(\i +  
    Estimated change            :    -0.36299231 rEddX  
    Estimated MTF               :     0.18104003 vz@QGgQ9~2  
    JziMjR  
    Compensator Statistics: Yz%=  
    Change in back focus: >@EQarD  
    Minimum            :        -0.000000 3zh'5qQ  
    Maximum            :         0.000000 N<:Ra~Ay  
    Mean               :        -0.000000 uiiA)j*!  
    Standard Deviation :         0.000000 gvsS:4N"Nq  
    CWC*bkd5a  
    Monte Carlo Analysis: '*)!&4f  
    Number of trials: 20 }Pw5*duq  
    jp[QA\  
    Initial Statistics: Normal Distribution tgrQ$Yjk  
    XWB>' UDQ#  
      Trial       Criterion        Change IM +Dm  
          1     0.42804416    -0.11598818 e=2;z  
    Change in Focus                :      -0.400171 *w@>zkBl  
          2     0.54384387    -0.00018847 =U,;/f  
    Change in Focus                :       1.018470 OgOu$.  
          3     0.44510003    -0.09893230 wv?`3:co  
    Change in Focus                :      -0.601922 {J99F  
          4     0.18154684    -0.36248550 <(^-o4Cl  
    Change in Focus                :       0.920681 5d L-v&W  
          5     0.28665820    -0.25737414 ? 4.W _  
    Change in Focus                :       1.253875 i]1[eGF  
          6     0.21263372    -0.33139862 9k83wACry  
    Change in Focus                :      -0.903878 A:p0p^*  
          7     0.40051424    -0.14351809 ,,{Uz)>'W6  
    Change in Focus                :      -1.354815 8PQ$X2)  
          8     0.48754161    -0.05649072 PE4{;|a }  
    Change in Focus                :       0.215922 e?f[t*td  
          9     0.40357468    -0.14045766 !N)oi $T%  
    Change in Focus                :       0.281783 ;9prsvf  
         10     0.26315315    -0.28087919 pwu5Fxn)  
    Change in Focus                :      -1.048393 ~xHr/:  
         11     0.26120585    -0.28282649 x "N,oDs  
    Change in Focus                :       1.017611 x#ouR+<  
         12     0.24033815    -0.30369419 :$9 4y{  
    Change in Focus                :      -0.109292 &"L3U  
         13     0.37164046    -0.17239188 g`1*p|  
    Change in Focus                :      -0.692430 sAnH\AFm  
         14     0.48597489    -0.05805744 *qq%)7  
    Change in Focus                :      -0.662040 sL!6-[N  
         15     0.21462327    -0.32940907 F*]AjD-  
    Change in Focus                :       1.611296 '!y ^  
         16     0.43378226    -0.11025008 AE<AEq  
    Change in Focus                :      -0.640081 uF< F4m;  
         17     0.39321881    -0.15081353 xDVzHgbf  
    Change in Focus                :       0.914906 IWMqmCbv  
         18     0.20692530    -0.33710703 E^|b3G6T  
    Change in Focus                :       0.801607 IAtc^'l#  
         19     0.51374068    -0.03029165 8`^I. tD  
    Change in Focus                :       0.947293 ,q:6[~n  
         20     0.38013374    -0.16389860 31bKgU{  
    Change in Focus                :       0.667010  w[VWk  
    |Yk23\!  
    Number of traceable Monte Carlo files generated: 20 ^K;,,s;0  
    0?sIod  
    Nominal     0.54403234 1nvs51?H  
    Best        0.54384387    Trial     2 =Qz 8"rt#  
    Worst       0.18154684    Trial     4 u`("x5sa  
    Mean        0.35770970 >j$f$*x  
    Std Dev     0.11156454 <rCl  
    ff{ESFtD  
    i5)trSM|  
    Compensator Statistics: ;vd%=vR  
    Change in back focus: T!/$ @]%\7  
    Minimum            :        -1.354815 7R)"HfUh  
    Maximum            :         1.611296 xeu] X|,  
    Mean               :         0.161872 "b} ^ xy  
    Standard Deviation :         0.869664 S'?XI@t[  
    Fmsg*s7w  
    90% >       0.20977951               fTH?t_e  
    80% >       0.22748071               lffw7T~  
    50% >       0.38667627               m&; t;&#  
    20% >       0.46553746               K` U\+AE  
    10% >       0.50064115                (6.0gB$aTu  
    ss-Be  
    End of Run. ,@[Q:fY  
    gp$+Qd  
    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 qk:F6kL\`  
    wRLkO/Fw  
    b@5bN\"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 W'6*$Ron  
    ){gOb  
    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                 ( 6r9y3'  
    80% >       0.22748071                 rWa7"<`p  
    50% >       0.38667627                 }g(aZ  
    20% >       0.46553746                 ty/jTo}  
    10% >       0.50064115 \`4}h[  
    m>UJ; F  
    最后这个数值是MTF值呢，还是MTF的公差？ qr6WSBc  
    l*%?C*  
    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？？？   +5^*c^C  
    ]c$%;!ZE  
    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  : b?bIxCA8  
    90% >       0.20977951                 Y,)9{T  
    80% >       0.22748071                 >EMCG.**  
    50% >       0.38667627                 7 s[ ATu  
    20% >       0.46553746                 DR=>la}!  
    10% >       0.50064115 t+?\4+!<  
    ....... WUqAPN  
    auGt>,Zj\Q  
    *X<De  
    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   DPe`C%Oc1  
    Mode                : Sensitivities h@Hmo^!9J  
    Sampling            : 2 *:d_~B?Tn  
    Nominal Criterion   : 0.54403234 Ezml LFp.  
    Test Wavelength     : 0.6328 x3WY26e  
    *Pq`~W_M7  
    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？ 1w5p*U0 ;  
    $~9U-B\  
    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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