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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 /eH37H  
    WwTl|wgvyI  
    (|Gwg\r  
    Vdx o  
    然后添加了默认公差分析，基本没变 Z;a)P.l.>  
    EC8Z. Uu  
    g$#A'Du  
    'A.5T%n-  
    然后运行分析的结果如下： $Z]@N nA9N  
    Qd YYWD   
    Analysis of Tolerances aWJ BYw6{L  
    NYP3u_ QX  
    File : E:\光学设计资料\zemax练习\f500.ZMX h M7 SGEV  
    Title: KCbJ^Rln  
    Date : TUE JUN 21 2011 A32Sdr'D  
    t !6sU]{  
    Units are Millimeters. #`gX(C>  
    All changes are computed using linear differences. `.O$RwC&7B  
    .6$=]hdAp  
    Paraxial Focus compensation only. h7fytO  
    0(Y,Q(JTo&  
    WARNING: Solves should be removed prior to tolerancing. 4[x` \  
    zn^7#$fC  
    Mnemonics: lMu9Dp  
    TFRN: Tolerance on curvature in fringes. 6M7GPHah  
    TTHI: Tolerance on thickness. CKZEX*mPC  
    TSDX: Tolerance on surface decentering in x. 4(P<'FK $  
    TSDY: Tolerance on surface decentering in y. \^9n&MonM  
    TSTX: Tolerance on surface tilt in x (degrees). WgR%mm^  
    TSTY: Tolerance on surface tilt in y (degrees). C^,b aCX  
    TIRR: Tolerance on irregularity (fringes). #tHYCSr]  
    TIND: Tolerance on Nd index of refraction. /cx'(AT  
    TEDX: Tolerance on element decentering in x. a@jM%VZ  
    TEDY: Tolerance on element decentering in y. IFew3!{\  
    TETX: Tolerance on element tilt in x (degrees). ]5QXiF8`  
    TETY: Tolerance on element tilt in y (degrees). d9S?dx  
    v&;JVai  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 0_ST2I"Ln  
    <)a$5"AP  
    WARNING: Boundary constraints on compensators will be ignored. -QJ8\/1>  
    bws}'#-*  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm s?m_zJh  
    Mode                : Sensitivities BaI-ve  
    Sampling            : 2 ob/<;SrU<  
    Nominal Criterion   : 0.54403234 6c(b*o  
    Test Wavelength     : 0.6328 bcwb'D\a  
    r vq{Dfo=  
    m%})H"5  
    Fields: XY Symmetric Angle in degrees m?yztm~u  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY HxW/t7Z(  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ~Azj Y8  
    s 7w A3|9  
    Sensitivity Analysis: Q~ Ad{yC  
    )K]p^lO  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| q1L>nvE  
    Type                      Value      Criterion        Change          Value      Criterion        Change k)D5>T  
    Fringe tolerance on surface 1 V*O[8s%5v  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 .YvIVQ  
    Change in Focus                :      -0.000000                            0.000000 <5j%!6zo  
    Fringe tolerance on surface 2 .p=J_%K}0x  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 DeW{#c6  
    Change in Focus                :       0.000000                            0.000000 _i7yyt;h  
    Fringe tolerance on surface 3 A#?Cts ,M  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 P8h|2,c%  
    Change in Focus                :      -0.000000                            0.000000 Q.jThP`p  
    Thickness tolerance on surface 1 73S N\  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Q6URaw#Yt`  
    Change in Focus                :       0.000000                            0.000000 N.Q}.(N0  
    Thickness tolerance on surface 2 K/Y"oQ2  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 A =Z$H2  
    Change in Focus                :       0.000000                           -0.000000 x%H,ta%  
    Decenter X tolerance on surfaces 1 through 3 W+8s>  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 y"7*u 3>"  
    Change in Focus                :       0.000000                            0.000000 6A =k;do  
    Decenter Y tolerance on surfaces 1 through 3 8EJP~bt  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 9^H.[t  
    Change in Focus                :       0.000000                            0.000000 LcA7f'GVK  
    Tilt X tolerance on surfaces 1 through 3 (degrees) A2L"&dl  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 B0Z>di:  
    Change in Focus                :       0.000000                            0.000000 x<rS2d-Y  
    Tilt Y tolerance on surfaces 1 through 3 (degrees)  `5(F'o  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 N}#"o  
    Change in Focus                :       0.000000                            0.000000 }.8yKj^p  
    Decenter X tolerance on surface 1 Z Q*hrgQ  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 P{ %Urv{U  
    Change in Focus                :       0.000000                            0.000000 m##!sF^k~J  
    Decenter Y tolerance on surface 1 `S-%}eUv  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 -\B*reC  
    Change in Focus                :       0.000000                            0.000000 tcl9:2/^]  
    Tilt X tolerance on surface (degrees) 1 $.w$x1  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 <2<2[F5Q%  
    Change in Focus                :       0.000000                            0.000000 j@+$lU*r  
    Tilt Y tolerance on surface (degrees) 1 3HcduJntl  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 f<rn't{  
    Change in Focus                :       0.000000                            0.000000 IaO R%B g  
    Decenter X tolerance on surface 2 m:0[as=  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 s~>1TxJe  
    Change in Focus                :       0.000000                            0.000000 0k5uqGLXe  
    Decenter Y tolerance on surface 2 ]n"RPktx  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ;-"q;&1e  
    Change in Focus                :       0.000000                            0.000000 OXKV6r6f  
    Tilt X tolerance on surface (degrees) 2 2v@B7r4}  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 j+ L:Ao  
    Change in Focus                :       0.000000                            0.000000 m`$Q/SyvG  
    Tilt Y tolerance on surface (degrees) 2 n`w]?bL  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 nq>F_h  
    Change in Focus                :       0.000000                            0.000000 6yAZvX  
    Decenter X tolerance on surface 3 ~UeTV?)  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 I][&*V1  
    Change in Focus                :       0.000000                            0.000000 [7 r^fD A  
    Decenter Y tolerance on surface 3 o-l-Z|)7  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 KkpbZ7\@  
    Change in Focus                :       0.000000                            0.000000 [S~Bt78d%r  
    Tilt X tolerance on surface (degrees) 3 dcq18~  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 1$C?+H  
    Change in Focus                :       0.000000                            0.000000 HIE8@Rv/3  
    Tilt Y tolerance on surface (degrees) 3 j6k"%QHf  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Wuk8&P3  
    Change in Focus                :       0.000000                            0.000000 {{M/=WqC  
    Irregularity of surface 1 in fringes :Ru8Nm  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 w8UUeF  
    Change in Focus                :       0.000000                            0.000000 B@dCCKc%/  
    Irregularity of surface 2 in fringes ;&}z L.!jo  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 !m-`~3P#l,  
    Change in Focus                :       0.000000                            0.000000 yVGf[ ~X  
    Irregularity of surface 3 in fringes [dFcxzM-N  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 r1vS~ 4Z  
    Change in Focus                :       0.000000                            0.000000 @+p(%  
    Index tolerance on surface 1 M?}:N_9<J  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 o37oRv]  
    Change in Focus                :       0.000000                            0.000000 /#@tv~Z^  
    Index tolerance on surface 2 {5c?_U  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Ck %if  
    Change in Focus                :       0.000000                           -0.000000 ew dTsgt'  
    x6!Q''f7  
    Worst offenders: BaIuOZ@,  
    Type                      Value      Criterion        Change &?1^/]'"r  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 4J(-~  
    TSTY   2             0.20000000     0.35349910    -0.19053324 BV7P_!vt  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 , .;0xyc  
    TSTX   2             0.20000000     0.35349910    -0.19053324  s7:H  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 .o C! ~'  
    TSTY   1             0.20000000     0.42678383    -0.11724851 k%O3\q  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 a:HN#P)12  
    TSTX   1             0.20000000     0.42678383    -0.11724851 ZPb30M0  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 }KIS_krs  
    TSTY   3             0.20000000     0.42861670    -0.11541563 vp!F6ZwO  
    j} ^3v #  
    Estimated Performance Changes based upon Root-Sum-Square method: aTeW#:m  
    Nominal MTF                 :     0.54403234 [ @"6:tTU  
    Estimated change            :    -0.36299231 C^B$_?  
    Estimated MTF               :     0.18104003 k_1@?&3  
    `]6<j<' ,  
    Compensator Statistics: kMnG1K  
    Change in back focus: r[;d.3jtP  
    Minimum            :        -0.000000 xJ. kd Tr  
    Maximum            :         0.000000 1>L'F8"  
    Mean               :        -0.000000 zG9D Ph  
    Standard Deviation :         0.000000 vZ srlHb  
    );t+~YPS  
    Monte Carlo Analysis: uG6.(A1LM  
    Number of trials: 20  ^QJJ2jZ  
    C3f\E: D)  
    Initial Statistics: Normal Distribution EleJ$ `/  
    Dg0rVV6c  
      Trial       Criterion        Change W  
          1     0.42804416    -0.11598818 P\6:euI  
    Change in Focus                :      -0.400171 0wV9Trp  
          2     0.54384387    -0.00018847 <)(W7#Ks  
    Change in Focus                :       1.018470 &<uLr *+*  
          3     0.44510003    -0.09893230 8uH8)  
    Change in Focus                :      -0.601922 .n YlYY'   
          4     0.18154684    -0.36248550 zSfUM.fM  
    Change in Focus                :       0.920681 {!qnHv\S  
          5     0.28665820    -0.25737414 x`@`y7(  
    Change in Focus                :       1.253875 h| wdx(4  
          6     0.21263372    -0.33139862 S!z3$@o  
    Change in Focus                :      -0.903878 >8OY6wb  
          7     0.40051424    -0.14351809 UdnRsp9S  
    Change in Focus                :      -1.354815 KZZY9  
          8     0.48754161    -0.05649072 HZ Wt>f  
    Change in Focus                :       0.215922 6z6\xkr  
          9     0.40357468    -0.14045766 URbB2 Bi  
    Change in Focus                :       0.281783 qA`@~\ qh"  
         10     0.26315315    -0.28087919 p!uB8F  
    Change in Focus                :      -1.048393 $rr@3H+  
         11     0.26120585    -0.28282649 Q/0gd? U?  
    Change in Focus                :       1.017611 c};%VB  
         12     0.24033815    -0.30369419 mS![J69(  
    Change in Focus                :      -0.109292 7/QK"0  
         13     0.37164046    -0.17239188 E JuTv%Y8  
    Change in Focus                :      -0.692430 _&S#;ni\c  
         14     0.48597489    -0.05805744 _[Imwu}  
    Change in Focus                :      -0.662040 _~\ } fY  
         15     0.21462327    -0.32940907 <n#X~}i)  
    Change in Focus                :       1.611296 `m<O!I"A  
         16     0.43378226    -0.11025008 jED.0,+K !  
    Change in Focus                :      -0.640081 8Ala31  
         17     0.39321881    -0.15081353 J-dB  
    Change in Focus                :       0.914906 v7./u4S|V  
         18     0.20692530    -0.33710703 xt,Qn460;  
    Change in Focus                :       0.801607 j"h/v7~  
         19     0.51374068    -0.03029165 v=lW5%r,'  
    Change in Focus                :       0.947293 >Q=^X3to  
         20     0.38013374    -0.16389860 XJ3sqcS  
    Change in Focus                :       0.667010 Q35\wQ#  
    _r\M}lDh*  
    Number of traceable Monte Carlo files generated: 20 *OFG3uM  
    =VuSi(d;e{  
    Nominal     0.54403234 9+N%Io?!  
    Best        0.54384387    Trial     2 f ?k0(rl  
    Worst       0.18154684    Trial     4 LPJ7V` !k  
    Mean        0.35770970 [t fB*m5  
    Std Dev     0.11156454 -#;xfJE  
    c6 mS  
    AK&>3D  
    Compensator Statistics: V27RK-.N!  
    Change in back focus: U[?_|=~7  
    Minimum            :        -1.354815 N2A6C$s  
    Maximum            :         1.611296 %wOkp`1-  
    Mean               :         0.161872 b1 w@toc  
    Standard Deviation :         0.869664 iD_y@+iz  
    =cjO]  
    90% >       0.20977951               pl&nr7\  
    80% >       0.22748071               QWfSm^ t  
    50% >       0.38667627               |3,WiK='  
    20% >       0.46553746               S5 q1M n  
    10% >       0.50064115                ySO\9#Ho  
    r@zT!.sc!  
    End of Run. \N0vA~N.  
    z6E =%-`  
    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 ,*6K3/kW  
    eP>_CrJb  
    ,k4pW&A  
    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 Y#68_%[  
    <L qJg  
    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                 -@w,tbc$  
    80% >       0.22748071                 #2_FM!e  
    50% >       0.38667627                 .-rz30xT  
    20% >       0.46553746                 %MHL@Nn>e  
    10% >       0.50064115 Cst1nGPL  
    :P_h_Tizv  
    最后这个数值是MTF值呢，还是MTF的公差？ qco'neR"z  
    "H(3pl.  
    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？？？   2v ~8fr4  
    3?FY?Q[  
    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  : $BehU  
    90% >       0.20977951                 -b!Z(}JK  
    80% >       0.22748071                 :|V650/  
    50% >       0.38667627                 Tfh2>  
    20% >       0.46553746                 K.QSt  
    10% >       0.50064115 mF@7;dpr  
    ....... ( xooU 8d  
    ++b[>};  
    9cB+ x`+Lu  
    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   ka!w\v  
    Mode                : Sensitivities KJyCfMH&:@  
    Sampling            : 2 l9uocP:D  
    Nominal Criterion   : 0.54403234 pqO0M]}  
    Test Wavelength     : 0.6328 QBGm)h?=  
    Z4Q]By:/L  
    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？ eZa7brC|  
    "9'3mmZm=?  
    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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