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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 GGez!?E%  
    D|D) 782  
    UZx8ozv'  
    Qm>2,={h  
    然后添加了默认公差分析，基本没变 2`U+ !  
    ^=[b]*V  
    DdCNCXU  
    'q\[aKEX=  
    然后运行分析的结果如下： og`K! d~  
    qyL!>kZr@  
    Analysis of Tolerances Y(B3M=j  
    Wgb L9'}B  
    File : E:\光学设计资料\zemax练习\f500.ZMX |syvtS{  
    Title: qh#?a'  
    Date : TUE JUN 21 2011 (D2N_l(`<  
    `rb}"V+  
    Units are Millimeters. 1.I58(0~+  
    All changes are computed using linear differences. `oOVR6{K9  
    nd~O*-uYg  
    Paraxial Focus compensation only. 7f>~P_  
    *AJYSa,z  
    WARNING: Solves should be removed prior to tolerancing. #Q@~ TW  
    i,!tu  
    Mnemonics: odKdpa Zc[  
    TFRN: Tolerance on curvature in fringes. JKA%$l0  
    TTHI: Tolerance on thickness. }6!m Q  
    TSDX: Tolerance on surface decentering in x. -lS(W^r4  
    TSDY: Tolerance on surface decentering in y. ZKt`>KZ  
    TSTX: Tolerance on surface tilt in x (degrees). J*4T| #0  
    TSTY: Tolerance on surface tilt in y (degrees). nrKir  
    TIRR: Tolerance on irregularity (fringes). ..Bf-)w  
    TIND: Tolerance on Nd index of refraction. t&Jrchk  
    TEDX: Tolerance on element decentering in x. %+@<T<>J<k  
    TEDY: Tolerance on element decentering in y. Wo{4*~f  
    TETX: Tolerance on element tilt in x (degrees). sB wzb  
    TETY: Tolerance on element tilt in y (degrees). 9k;%R5(  
    eI1C0Uz1  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ]JH Int  
    H1r8n$h  
    WARNING: Boundary constraints on compensators will be ignored. J+m1d\lBu  
    &]O^d4/  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm yOO@v6jO)  
    Mode                : Sensitivities "'~&D/7  
    Sampling            : 2 7)*q@  
    Nominal Criterion   : 0.54403234 )yUSuK(Vu  
    Test Wavelength     : 0.6328 ht2J, 1t  
    !q 9PO  
    $0*D7P^8  
    Fields: XY Symmetric Angle in degrees t8.^YTI  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ny1Dg$u i2  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 a xz-H`oq4  
    b\p2yJ\  
    Sensitivity Analysis: ~p x2kHZ  
    v;(k7  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| > 1=].  
    Type                      Value      Criterion        Change          Value      Criterion        Change vngn^2  
    Fringe tolerance on surface 1 t**MthnW  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 + S@[1 N  
    Change in Focus                :      -0.000000                            0.000000 cH6J:0>W  
    Fringe tolerance on surface 2 ~cSE 9ul  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 b1EY6'R2  
    Change in Focus                :       0.000000                            0.000000 K_%gda|l+  
    Fringe tolerance on surface 3 X'p%K/-m  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 lJt?0;gn  
    Change in Focus                :      -0.000000                            0.000000 yM*_"z!L  
    Thickness tolerance on surface 1 "EnxVV  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 7`tJ/xtMy;  
    Change in Focus                :       0.000000                            0.000000 bzh:  
    Thickness tolerance on surface 2 {bNVNG^  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 @s0mX3P  
    Change in Focus                :       0.000000                           -0.000000 ]v l?J  
    Decenter X tolerance on surfaces 1 through 3  NmTo/5s  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 \f'=  
    Change in Focus                :       0.000000                            0.000000 7MIrrhk  
    Decenter Y tolerance on surfaces 1 through 3 [y"Yi PK  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005  CP Ju=  
    Change in Focus                :       0.000000                            0.000000 {T3~js   
    Tilt X tolerance on surfaces 1 through 3 (degrees) {dwlW`{  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 .9q`Tf  
    Change in Focus                :       0.000000                            0.000000 B?9"Ztb  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) )H+p6<  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 V`}u:t7r  
    Change in Focus                :       0.000000                            0.000000 =m 6<H  
    Decenter X tolerance on surface 1 Zou;o9Ww  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 1cD  
    Change in Focus                :       0.000000                            0.000000 xn anca  
    Decenter Y tolerance on surface 1 vw :&c.zd  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 |}Z2YDwO/  
    Change in Focus                :       0.000000                            0.000000 3[<D"0#},  
    Tilt X tolerance on surface (degrees) 1 6foiN W+  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 "Iacs s0;  
    Change in Focus                :       0.000000                            0.000000 j-wKm_M#jX  
    Tilt Y tolerance on surface (degrees) 1 r |2{( +  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 DK1{Z;Z  
    Change in Focus                :       0.000000                            0.000000 \ lK `  
    Decenter X tolerance on surface 2 gdS@NUM  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 yeA]j[ #  
    Change in Focus                :       0.000000                            0.000000 p5J!j I=  
    Decenter Y tolerance on surface 2 c| X }[  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 5YLc4z*  
    Change in Focus                :       0.000000                            0.000000 " :V@AT  
    Tilt X tolerance on surface (degrees) 2 V6_~"pRR=  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 .\8LL,zT  
    Change in Focus                :       0.000000                            0.000000 ,,G'Zur7  
    Tilt Y tolerance on surface (degrees) 2 Dlz1"|SF  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ;#=y5Q4  
    Change in Focus                :       0.000000                            0.000000 _z>%h>L|g  
    Decenter X tolerance on surface 3 ^(KDtc  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Nb)Mh  
    Change in Focus                :       0.000000                            0.000000 9]:F!d/  
    Decenter Y tolerance on surface 3 7V&ly{</  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 b?:?"   
    Change in Focus                :       0.000000                            0.000000 <tdsUh:?&  
    Tilt X tolerance on surface (degrees) 3 _po5j;"_O  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 -_bDbYL  
    Change in Focus                :       0.000000                            0.000000 Fi# 9L  
    Tilt Y tolerance on surface (degrees) 3 s`=&l  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 N'Vj& DWC  
    Change in Focus                :       0.000000                            0.000000 PNH>LT^  
    Irregularity of surface 1 in fringes omI"xx  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 h$p}/A  
    Change in Focus                :       0.000000                            0.000000 AI-ZZ6lzR  
    Irregularity of surface 2 in fringes %- Ga  ^[  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 =.qPjp_Qd  
    Change in Focus                :       0.000000                            0.000000 qyjVB/ko  
    Irregularity of surface 3 in fringes zIr4!|X  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Bnw^W _  
    Change in Focus                :       0.000000                            0.000000 e^v\K[  
    Index tolerance on surface 1 #wJ^:r-c`  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 S$/SFB$)~W  
    Change in Focus                :       0.000000                            0.000000 [XkWPx`  
    Index tolerance on surface 2 \_7'f  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 0O(Vyy  
    Change in Focus                :       0.000000                           -0.000000 BwVq:)P/R  
    (/7cXd@\6  
    Worst offenders: gi+FL_8CzU  
    Type                      Value      Criterion        Change 6\? 2=dNX  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 $g\p)- aU  
    TSTY   2             0.20000000     0.35349910    -0.19053324 \/9O5`u*V  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 Gn;^]8d  
    TSTX   2             0.20000000     0.35349910    -0.19053324 AR c  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 V!s#xXD}  
    TSTY   1             0.20000000     0.42678383    -0.11724851  ~;uU{TT  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 X$eR RSW  
    TSTX   1             0.20000000     0.42678383    -0.11724851 d"S\j@  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 HcpAp]L)  
    TSTY   3             0.20000000     0.42861670    -0.11541563  SPnW8  
    **c"}S6:mC  
    Estimated Performance Changes based upon Root-Sum-Square method: CHDt^(oa!B  
    Nominal MTF                 :     0.54403234 zuF]E+  
    Estimated change            :    -0.36299231 sTvw@o *  
    Estimated MTF               :     0.18104003 Q1!+wC   
    ]+>Kl>@  
    Compensator Statistics: zL3I!& z2  
    Change in back focus: .f|)od[  
    Minimum            :        -0.000000 wdIJ?\/763  
    Maximum            :         0.000000 `:d\L H  
    Mean               :        -0.000000 ()Q q7/  
    Standard Deviation :         0.000000 Q)5V3Q]@^  
    &Y3ZGRT  
    Monte Carlo Analysis: %0vWyU:K9  
    Number of trials: 20 3pyE'9"f6  
    9 $^b^It  
    Initial Statistics: Normal Distribution NKiWt Z"  
    I")mg~f  
      Trial       Criterion        Change *P?Rucg  
          1     0.42804416    -0.11598818 Q1(4l?X@  
    Change in Focus                :      -0.400171 f67t.6Vw2+  
          2     0.54384387    -0.00018847 W)L*zVj~  
    Change in Focus                :       1.018470 8Ep!  
          3     0.44510003    -0.09893230 !:v7SRUXb  
    Change in Focus                :      -0.601922 ViU5l*n;  
          4     0.18154684    -0.36248550 NzS`s,N4/0  
    Change in Focus                :       0.920681 ED>P>Gg  
          5     0.28665820    -0.25737414 ?>My&yB  
    Change in Focus                :       1.253875 wWM[Hus  
          6     0.21263372    -0.33139862 8_M"lU0[  
    Change in Focus                :      -0.903878 Ged} qXn  
          7     0.40051424    -0.14351809 x#hSN|'"  
    Change in Focus                :      -1.354815 \/-4jF:  
          8     0.48754161    -0.05649072 znAo]F9=J"  
    Change in Focus                :       0.215922 whFJ]  
          9     0.40357468    -0.14045766 :.(A,  
    Change in Focus                :       0.281783 I~nz~U:ak  
         10     0.26315315    -0.28087919 (4/W)L$  
    Change in Focus                :      -1.048393 B/Ltb^a  
         11     0.26120585    -0.28282649 YR[I,j  
    Change in Focus                :       1.017611 cGlpJ)'-{  
         12     0.24033815    -0.30369419 NTVaz.  
    Change in Focus                :      -0.109292 [MF&x9Ss?%  
         13     0.37164046    -0.17239188 24\^{3nOK  
    Change in Focus                :      -0.692430 B?4Iu)bCxI  
         14     0.48597489    -0.05805744 gP>W* ]0r1  
    Change in Focus                :      -0.662040 JD9=gBN\?  
         15     0.21462327    -0.32940907  u5Mg  
    Change in Focus                :       1.611296 /h@3R[k  
         16     0.43378226    -0.11025008 o3:BH@@  
    Change in Focus                :      -0.640081 v`U;.W  
         17     0.39321881    -0.15081353 Hx n#vAc  
    Change in Focus                :       0.914906 Bve',.xH  
         18     0.20692530    -0.33710703 8[#EC3  
    Change in Focus                :       0.801607 ]1M Z:]k  
         19     0.51374068    -0.03029165 >u]9(o7I  
    Change in Focus                :       0.947293 WT}x Cni  
         20     0.38013374    -0.16389860 MjK<n[.  
    Change in Focus                :       0.667010 QY*F(S,\  
    G[n;%c~`+  
    Number of traceable Monte Carlo files generated: 20 1v*N]}`HU  
    )5u#'5I>  
    Nominal     0.54403234 h~O^~"jc  
    Best        0.54384387    Trial     2 t ;fJ`.  
    Worst       0.18154684    Trial     4 [MD"JW?4B  
    Mean        0.35770970 m%c]+Our`  
    Std Dev     0.11156454 *;Z a))  
    A o@WTs9  
    dJ>tM'G  
    Compensator Statistics: {7` 1m!R  
    Change in back focus: ]`|;ZQiD  
    Minimum            :        -1.354815 L1&` 3a?pL  
    Maximum            :         1.611296 PGuPw'2;[  
    Mean               :         0.161872 |hX\ep   
    Standard Deviation :         0.869664 'r1X6?d J  
    xpI8QV$#  
    90% >       0.20977951               xm tD0U1  
    80% >       0.22748071               r4 qs!(  
    50% >       0.38667627               E:[!)UG|y  
    20% >       0.46553746               /JIVp_-p  
    10% >       0.50064115                !E,|EdIr  
    tH:?aP*2  
    End of Run. [}4\CWM  
    09i7 7  
    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 r4fd@<=g  
    *%%n9T  
    R _2#7Xs  
    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 m8INgzVTC  
    iF_u/#  
    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                 '=d y =  
    80% >       0.22748071                 ]SN5 &S  
    50% >       0.38667627                 `:2np{  
    20% >       0.46553746                 mA #^Pv*  
    10% >       0.50064115 swMR+F#u*  
    |1Nz8Vr.  
    最后这个数值是MTF值呢，还是MTF的公差？ gL1r"&^L  
    @f-rS{  
    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？？？   Q[lkhx|.B  
    C*Q x  
    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  : 3[To"You  
    90% >       0.20977951                 ~I%JVX%  
    80% >       0.22748071                 iLFhm4.PO  
    50% >       0.38667627                 r}t%DH  
    20% >       0.46553746                 hhOrO<(  
    10% >       0.50064115 3. g-V  
    ....... ?^: xNRE$j  
    kC+dQ&@g{  
    .PJ_1  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   %:.00F([r  
    Mode                : Sensitivities HoKN<w  
    Sampling            : 2 oJEjg>%n  
    Nominal Criterion   : 0.54403234 m2Q#ATLW  
    Test Wavelength     : 0.6328 C$EvcF% 1  
    &k {1N.  
    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？ 6 {tW$q  
    {\f`s^;8{  
    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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