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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 Xg)yz~Ug  
    FP Mk&  
    $k?L?R1  
    V:+bq`  
    然后添加了默认公差分析，基本没变 S`^W#,rj  
    iUKj:q:  
     (M=Br  
    2u:j6ic  
    然后运行分析的结果如下： ;wF|.^_2  
    &sWyh[`P  
    Analysis of Tolerances +Oscy-;  
    q8lK6p\:W  
    File : E:\光学设计资料\zemax练习\f500.ZMX z~_\onC  
    Title: r]S9z  
    Date : TUE JUN 21 2011 IY:O?M  
    +OmSR*fA0  
    Units are Millimeters. 5a&w M  
    All changes are computed using linear differences. 4s8E:I=K  
    mc=*wr$  
    Paraxial Focus compensation only. *l^'v9  
    *LVM}| f  
    WARNING: Solves should be removed prior to tolerancing. Yp)U'8{h c  
    )X/Faje  
    Mnemonics: K_aN7?#.v`  
    TFRN: Tolerance on curvature in fringes. {|%O)fr,  
    TTHI: Tolerance on thickness. #Q"vwek  
    TSDX: Tolerance on surface decentering in x. #j JcgR<  
    TSDY: Tolerance on surface decentering in y. l_%~X 9"  
    TSTX: Tolerance on surface tilt in x (degrees). gK(4<PO'  
    TSTY: Tolerance on surface tilt in y (degrees). ("6W.i>  
    TIRR: Tolerance on irregularity (fringes). iQF}x&a<  
    TIND: Tolerance on Nd index of refraction. 8iNAs#s  
    TEDX: Tolerance on element decentering in x. bij?q\  
    TEDY: Tolerance on element decentering in y. &^H "T6  
    TETX: Tolerance on element tilt in x (degrees). Uk9g^\H<D  
    TETY: Tolerance on element tilt in y (degrees). (n/1 :'  
    }}_uN-m  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. m+UdT854  
    D2p6&HNT  
    WARNING: Boundary constraints on compensators will be ignored. ^IH1@  
    {p 0'Lc<3n  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 4QNR_w  
    Mode                : Sensitivities C":\L>Ax  
    Sampling            : 2 mmL~`i/  
    Nominal Criterion   : 0.54403234 <3 }l8Z  
    Test Wavelength     : 0.6328 G,-OH-M!  
    }D+8K  
    l,FoK76G  
    Fields: XY Symmetric Angle in degrees Jf$wBPg  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY DcA'{21  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 g-FZel   
    >G2-kL_  
    Sensitivity Analysis: P{eRDQ=  
    J"rwWIxO*  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| #:|?t&On  
    Type                      Value      Criterion        Change          Value      Criterion        Change l`&6W?C  
    Fringe tolerance on surface 1 J36@Pf]h  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 F*}Q^%  
    Change in Focus                :      -0.000000                            0.000000 >EtP^Lu~f_  
    Fringe tolerance on surface 2 hhAC@EGG  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 2hJ3m+N^  
    Change in Focus                :       0.000000                            0.000000 Nh9!lBm*]  
    Fringe tolerance on surface 3 (dF;Gcw+  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 R+0"B  
    Change in Focus                :      -0.000000                            0.000000 )`mF.87b&h  
    Thickness tolerance on surface 1 PAV2w_X~  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 r5!M;hU1j  
    Change in Focus                :       0.000000                            0.000000 (H+[^(3d2  
    Thickness tolerance on surface 2 Vor9 ?F&w  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 X&.$/xaT  
    Change in Focus                :       0.000000                           -0.000000 yQ{_\t1Wd  
    Decenter X tolerance on surfaces 1 through 3 ~^~RltY  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 K=TW}ZO  
    Change in Focus                :       0.000000                            0.000000 Ko)T>8:  
    Decenter Y tolerance on surfaces 1 through 3 NB5B$q_'#  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Xl6ZV,1=n7  
    Change in Focus                :       0.000000                            0.000000 Os 2YZ<t  
    Tilt X tolerance on surfaces 1 through 3 (degrees) >5Oy^u6Ly  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "!6~*!]c  
    Change in Focus                :       0.000000                            0.000000 NoZ4['NI\  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) E)wT+\  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 9~'Ip7X,!  
    Change in Focus                :       0.000000                            0.000000 8/?uU]#Q  
    Decenter X tolerance on surface 1 Q EGanpz  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 9c}]:3#XO  
    Change in Focus                :       0.000000                            0.000000 b[o"Uq@8?  
    Decenter Y tolerance on surface 1 /{ MH'  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 JS?l?~  
    Change in Focus                :       0.000000                            0.000000 <VR&= YJ  
    Tilt X tolerance on surface (degrees) 1 h;UdwmT  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 GdeR#%z  
    Change in Focus                :       0.000000                            0.000000 N|d.!Q;V.y  
    Tilt Y tolerance on surface (degrees) 1 2mU-LQ1WN  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ; :\,x  
    Change in Focus                :       0.000000                            0.000000 :$Q]U2$mPS  
    Decenter X tolerance on surface 2 mRnzP[7-\)  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 -_*XhD  
    Change in Focus                :       0.000000                            0.000000 t>GLZzO  
    Decenter Y tolerance on surface 2 >\x_"oR  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 9hLmrYNM1  
    Change in Focus                :       0.000000                            0.000000 p z+}7  
    Tilt X tolerance on surface (degrees) 2 T{{AZV"pB  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 $_7d! S"  
    Change in Focus                :       0.000000                            0.000000 $4*E\G8  
    Tilt Y tolerance on surface (degrees) 2 j X!ftm2  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 %3#I:>si  
    Change in Focus                :       0.000000                            0.000000 +fCyR  
    Decenter X tolerance on surface 3 hOLy*%  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 MN M>  
    Change in Focus                :       0.000000                            0.000000 i~Ob( YIH  
    Decenter Y tolerance on surface 3 ^_S-s\DW  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 f+aS2k(e>  
    Change in Focus                :       0.000000                            0.000000 fRa-bqQ  
    Tilt X tolerance on surface (degrees) 3 {S"  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 '"fU2M<.  
    Change in Focus                :       0.000000                            0.000000 ? ]:EmP  
    Tilt Y tolerance on surface (degrees) 3 awSS..g}L  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 \%?8jQ'tX  
    Change in Focus                :       0.000000                            0.000000 t k/K0u  
    Irregularity of surface 1 in fringes m57tO X  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 c;8"vJ  
    Change in Focus                :       0.000000                            0.000000 n.Eoi4jV'  
    Irregularity of surface 2 in fringes O$umu_  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 # /,2MQ  
    Change in Focus                :       0.000000                            0.000000 `ToRkk&&>{  
    Irregularity of surface 3 in fringes MV;Y?%>  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 VRQbf  
    Change in Focus                :       0.000000                            0.000000 3|'#n[3  
    Index tolerance on surface 1 cwWSNm|  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 73s3-DS,  
    Change in Focus                :       0.000000                            0.000000 N7HbOLpM  
    Index tolerance on surface 2 L[D/#0qp  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 6v2RS  
    Change in Focus                :       0.000000                           -0.000000 2*FWIHyf  
    ?(NT!es  
    Worst offenders: QOh w  
    Type                      Value      Criterion        Change zEPx  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 bHQKRV  
    TSTY   2             0.20000000     0.35349910    -0.19053324 HSr"M.k5  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 l;{N/cS  
    TSTX   2             0.20000000     0.35349910    -0.19053324 p`<e~[]a  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 I bv_D$cT  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Yr"!&\[oz  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 J.e8UQ@=5  
    TSTX   1             0.20000000     0.42678383    -0.11724851 j#nO6\&o  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 hA1gkEM2o  
    TSTY   3             0.20000000     0.42861670    -0.11541563 x+*L5$;h  
    "U5Ln2X{J  
    Estimated Performance Changes based upon Root-Sum-Square method: 0q>NE <L  
    Nominal MTF                 :     0.54403234 K@j^gF/0B  
    Estimated change            :    -0.36299231 F3Ak'h{Ay  
    Estimated MTF               :     0.18104003  IB.'4B7  
    bUAR<R'E  
    Compensator Statistics: u5{5ts+:  
    Change in back focus: #-gGsj;F  
    Minimum            :        -0.000000 %M;_(jda  
    Maximum            :         0.000000 v1"g!%U6  
    Mean               :        -0.000000 )(?UA$"  
    Standard Deviation :         0.000000 32bkouq  
    O2'bNR  
    Monte Carlo Analysis: ll<9f)  
    Number of trials: 20 `3sy>GU?  
    B=Zukg1G  
    Initial Statistics: Normal Distribution 9OQ0Yc!3  
    e1 {t0f  
      Trial       Criterion        Change Ot2zhR )  
          1     0.42804416    -0.11598818 ><#2O  
    Change in Focus                :      -0.400171 An8%7xa7  
          2     0.54384387    -0.00018847 /:Z~"Q*r  
    Change in Focus                :       1.018470 &8X .!r`f  
          3     0.44510003    -0.09893230 ,2 g M-  
    Change in Focus                :      -0.601922 Kixr6\  
          4     0.18154684    -0.36248550 ,3J`ftCV  
    Change in Focus                :       0.920681 }4\!7]FVYX  
          5     0.28665820    -0.25737414 &Xn8oe  
    Change in Focus                :       1.253875 #E$Z[G]  
          6     0.21263372    -0.33139862 iKF$J3a\2f  
    Change in Focus                :      -0.903878 x#:BE  
          7     0.40051424    -0.14351809 z*dQIC  
    Change in Focus                :      -1.354815 {#w A !>.  
          8     0.48754161    -0.05649072 Rekb?|{z  
    Change in Focus                :       0.215922 ;Oi[:Ck  
          9     0.40357468    -0.14045766 [yYH>~SuwZ  
    Change in Focus                :       0.281783 C`yvBt40r  
         10     0.26315315    -0.28087919 _[$T29:8\]  
    Change in Focus                :      -1.048393 c9*1$~(v0I  
         11     0.26120585    -0.28282649 =$)4:  
    Change in Focus                :       1.017611 `\W   
         12     0.24033815    -0.30369419 Z92iil;t  
    Change in Focus                :      -0.109292 )y%jLiQv  
         13     0.37164046    -0.17239188 O:5Rp_?^  
    Change in Focus                :      -0.692430 *%OYAsc  
         14     0.48597489    -0.05805744 O2`oe4."vd  
    Change in Focus                :      -0.662040 jSwtf  
         15     0.21462327    -0.32940907 &*G5J7%w  
    Change in Focus                :       1.611296 xb+RRTgj  
         16     0.43378226    -0.11025008 `x{.z=xC  
    Change in Focus                :      -0.640081 (b/A|hl  
         17     0.39321881    -0.15081353 wQD0 vsD  
    Change in Focus                :       0.914906 Yo~LckFF  
         18     0.20692530    -0.33710703 rP^TN^bd|  
    Change in Focus                :       0.801607 G%P>A g  
         19     0.51374068    -0.03029165 VxkCK02k  
    Change in Focus                :       0.947293 (B _7\}v|_  
         20     0.38013374    -0.16389860 QQg8+{>  
    Change in Focus                :       0.667010 E ;BPN  
    %Y cxC0S[  
    Number of traceable Monte Carlo files generated: 20 3d*&':  
    v"P&` 1=T  
    Nominal     0.54403234 ]>R`;"(  
    Best        0.54384387    Trial     2 *#&k+{a^2  
    Worst       0.18154684    Trial     4 8sN#e(@  
    Mean        0.35770970 GBH_r 0  
    Std Dev     0.11156454 8 uDerJ!  
    csH2_+uG  
    CS/Mpmsp  
    Compensator Statistics: s? QVX~S"  
    Change in back focus: ~L- 0~  
    Minimum            :        -1.354815 B.89_!/:p  
    Maximum            :         1.611296 tigT@!`$Y  
    Mean               :         0.161872 Nls83 W  
    Standard Deviation :         0.869664 :J^qjAV  
    Bk?8 zYp  
    90% >       0.20977951               wP[xmO-%  
    80% >       0.22748071               :83,[;GO2  
    50% >       0.38667627               z]^+^c_  
    20% >       0.46553746               Z[",$Lt  
    10% >       0.50064115                8F#osN  
    +c^_^Z$_4o  
    End of Run. K(<$.  
    !ZFr7Xz  
    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 >Bc> IO  
    ""co6qo#>  
    ')B =|T)  
    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 q@(1Yivk  
    YEzU{J  
    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                 Z7fg 25  
    80% >       0.22748071                 yGxv?%%2  
    50% >       0.38667627                 #ly@;!M  
    20% >       0.46553746                 ?~J i-{#X  
    10% >       0.50064115 69-:]7.g  
    N2BI_,hI1  
    最后这个数值是MTF值呢，还是MTF的公差？ k;k}qq`d  
    ?]c+j1 i  
    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？？？   ,MQVE  
    4WC9US-k  
    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  : F'JY?  
    90% >       0.20977951                 XL$* _c <)  
    80% >       0.22748071                 V Z y4_v=  
    50% >       0.38667627                  d$W  
    20% >       0.46553746                 l@JSK ;  
    10% >       0.50064115 &fOdlQ?  
    ....... 4)6xU4eBaL  
    0d^Z uTN  
    =1p8 i  
    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   )~J>X{hy  
    Mode                : Sensitivities sP@X g;]  
    Sampling            : 2 :1ecx$  
    Nominal Criterion   : 0.54403234 uX/$CM  
    Test Wavelength     : 0.6328 JAjmrX  
    Q/ms]Du  
    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？ YTQt3=1ii  
    eN? Y7  
    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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