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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 d@`M CchCB  
    X[ q+619  
    dI&!e#Y  
    g VQjL+_W  
    然后添加了默认公差分析，基本没变 61puqiGG^  
    S#)Eom?V  
    *n" /a{6>  
    \$0F-=w`8  
    然后运行分析的结果如下： D]w!2k%V  
    mMsTyM-f  
    Analysis of Tolerances Bj k]ZU0T  
    jK \T|vGJa  
    File : E:\光学设计资料\zemax练习\f500.ZMX ];.pK  
    Title: 5` Te \H  
    Date : TUE JUN 21 2011 FZ!`B]]le,  
    /VmR<C?h  
    Units are Millimeters. 3)-/`iy#  
    All changes are computed using linear differences. mPI8_5V8]  
    MZ Aij  
    Paraxial Focus compensation only. hX `}Q4(k  
    'smWLz}  
    WARNING: Solves should be removed prior to tolerancing. 9Gv[ 8'I  
    @d Jr/6Yx  
    Mnemonics: :Y9NLbv  
    TFRN: Tolerance on curvature in fringes. !vG'J\*xc  
    TTHI: Tolerance on thickness. I%- " |]$  
    TSDX: Tolerance on surface decentering in x. T,| 1g6  
    TSDY: Tolerance on surface decentering in y. i4^o59}8  
    TSTX: Tolerance on surface tilt in x (degrees). (Qa/EkE^*w  
    TSTY: Tolerance on surface tilt in y (degrees). V&-~x^JK  
    TIRR: Tolerance on irregularity (fringes). /pF `8$  
    TIND: Tolerance on Nd index of refraction. pZ/>[TP(%F  
    TEDX: Tolerance on element decentering in x. PaV-F_2  
    TEDY: Tolerance on element decentering in y. vAyFmdJ^  
    TETX: Tolerance on element tilt in x (degrees). f B9;_z  
    TETY: Tolerance on element tilt in y (degrees). yAoe51h?  
    A&nU]R8S  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. zZVfj:i8  
    @V03a )6,h  
    WARNING: Boundary constraints on compensators will be ignored. }CeCc0M  
    cA%%IL$R  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm \ Y"Wu  
    Mode                : Sensitivities ]X I*Wsn  
    Sampling            : 2 r*Yi1j/  
    Nominal Criterion   : 0.54403234 ~gGZmT b  
    Test Wavelength     : 0.6328 `uC@nJ  
    ]('D^Ro  
    6/rFHY2q  
    Fields: XY Symmetric Angle in degrees cJ54s}  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY lP<:tR~K  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 6R=W}q4  
    y~)1 1]'>  
    Sensitivity Analysis: foQ#a  
    dd]/.Z  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ;qrB\j"  
    Type                      Value      Criterion        Change          Value      Criterion        Change E9~Ghx.   
    Fringe tolerance on surface 1 9W(dmde>  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 _cXqAo  
    Change in Focus                :      -0.000000                            0.000000  trAkcYd  
    Fringe tolerance on surface 2 *4V=z#  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 &L^+BQ`O?  
    Change in Focus                :       0.000000                            0.000000 ]\!?qsT3}  
    Fringe tolerance on surface 3 Q[nEsYP  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 3-&QRR#p  
    Change in Focus                :      -0.000000                            0.000000 o<N  nV  
    Thickness tolerance on surface 1  EW3(cQbK  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 rwGKfoKI  
    Change in Focus                :       0.000000                            0.000000 ,T2G~^0  
    Thickness tolerance on surface 2 TA{\PKA)  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 '0FhL)x?"T  
    Change in Focus                :       0.000000                           -0.000000 Rz.?i+  
    Decenter X tolerance on surfaces 1 through 3 J>\B`E  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 V3"=w&2]K  
    Change in Focus                :       0.000000                            0.000000 rb|U;)C  
    Decenter Y tolerance on surfaces 1 through 3 zzxGAVu  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 K"r*M.P>  
    Change in Focus                :       0.000000                            0.000000 @;'o2   
    Tilt X tolerance on surfaces 1 through 3 (degrees) JYTP 2  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 x@*SEa  
    Change in Focus                :       0.000000                            0.000000 d+'p@!W_  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) m@^1JlH  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 >(;{C<6|^  
    Change in Focus                :       0.000000                            0.000000 /Z$&pqs!  
    Decenter X tolerance on surface 1 ({q?d[q[  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 %HL*c =  
    Change in Focus                :       0.000000                            0.000000 7(5 4/  
    Decenter Y tolerance on surface 1 g[3)P+  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 q#s,- uu  
    Change in Focus                :       0.000000                            0.000000 )BwjZMJ.N  
    Tilt X tolerance on surface (degrees) 1 )gMG#>up@  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 !1ED~3 /X  
    Change in Focus                :       0.000000                            0.000000 7R`mf   
    Tilt Y tolerance on surface (degrees) 1 Rp5#clsy  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 :3I@(k\PY  
    Change in Focus                :       0.000000                            0.000000  Y*14v~\'  
    Decenter X tolerance on surface 2 f\jLqZY  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 kOed ]>H  
    Change in Focus                :       0.000000                            0.000000 *FMMjz  
    Decenter Y tolerance on surface 2 }b-g*dn]5  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 (_"*NY0  
    Change in Focus                :       0.000000                            0.000000 og kD^   
    Tilt X tolerance on surface (degrees) 2 N|6M P e  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 >M`CVUf  
    Change in Focus                :       0.000000                            0.000000 *3?'4"B{8  
    Tilt Y tolerance on surface (degrees) 2 3nhXZOO1  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 hy`?E6=9+  
    Change in Focus                :       0.000000                            0.000000 'JRvP!]  
    Decenter X tolerance on surface 3 zR{W?_cV  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 m8o(J\]  
    Change in Focus                :       0.000000                            0.000000 <?@NRFTe  
    Decenter Y tolerance on surface 3 v+X)Qmzf~  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 lk( }-  
    Change in Focus                :       0.000000                            0.000000 zaK#Z?V}  
    Tilt X tolerance on surface (degrees) 3 aL&n[   
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ;t|Ii8Ne  
    Change in Focus                :       0.000000                            0.000000  m5r7  
    Tilt Y tolerance on surface (degrees) 3 j!7{|EQFcl  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 {62n7'U{  
    Change in Focus                :       0.000000                            0.000000 W#hj 1  
    Irregularity of surface 1 in fringes 4/wa+Y+=vt  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 W;,C_   
    Change in Focus                :       0.000000                            0.000000 wwyPl  
    Irregularity of surface 2 in fringes J%,*is EL  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 egq67S  
    Change in Focus                :       0.000000                            0.000000 K~| 4[\  
    Irregularity of surface 3 in fringes ;ShJi  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 !K'}K>iT  
    Change in Focus                :       0.000000                            0.000000 l\@)y4 +  
    Index tolerance on surface 1 (G[ *|6m  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 yc?a=6q'm  
    Change in Focus                :       0.000000                            0.000000 [m|YWT=  
    Index tolerance on surface 2 6x%h6<#xh*  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 k@z,Iq8  
    Change in Focus                :       0.000000                           -0.000000 Bq$rf < W  
    SN1}xR$  
    Worst offenders: G1o3l~x  
    Type                      Value      Criterion        Change \Ol kM<  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 `|ASx8_!  
    TSTY   2             0.20000000     0.35349910    -0.19053324 "$2 y-|  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 {o.FlX  
    TSTX   2             0.20000000     0.35349910    -0.19053324 uA#P'?  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 5) pj]S!]-  
    TSTY   1             0.20000000     0.42678383    -0.11724851  O4og?h>  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Vz=PiMO  
    TSTX   1             0.20000000     0.42678383    -0.11724851 !Rhl f.x  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 XBp?w  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ]%IT|/;9Y  
    9f<MQ6_UU  
    Estimated Performance Changes based upon Root-Sum-Square method: SUU !7Yd|  
    Nominal MTF                 :     0.54403234 sXD1C2o  
    Estimated change            :    -0.36299231 i:OK8Q{VI  
    Estimated MTF               :     0.18104003 \uaJ @{Vug  
    CnG+Mc^  
    Compensator Statistics: Y07ZB'K  
    Change in back focus: GJoS #s  
    Minimum            :        -0.000000 "HDcmIXg&  
    Maximum            :         0.000000 P_Gw-`L5T  
    Mean               :        -0.000000 '|Kmq5)  
    Standard Deviation :         0.000000 ]Ccg`AR{  
    MP4z-4Y  
    Monte Carlo Analysis: .K p  
    Number of trials: 20 <w)r`D6  
    jhb6T ?}  
    Initial Statistics: Normal Distribution B4i!/@0s  
    $Z\.-QE\  
      Trial       Criterion        Change {l/-LZ.  
          1     0.42804416    -0.11598818 f (F)1  
    Change in Focus                :      -0.400171 e-"nB]n^/  
          2     0.54384387    -0.00018847 <U!`J[n%  
    Change in Focus                :       1.018470 Is{KN!Hw  
          3     0.44510003    -0.09893230 W8KDX_vGJ  
    Change in Focus                :      -0.601922 )~HUo9K9  
          4     0.18154684    -0.36248550 ucG@?@JENm  
    Change in Focus                :       0.920681 93` AWg/T  
          5     0.28665820    -0.25737414 [&#/]Ul'  
    Change in Focus                :       1.253875 i03w 1pSH,  
          6     0.21263372    -0.33139862 VrxQc qPr`  
    Change in Focus                :      -0.903878 <7j87  
          7     0.40051424    -0.14351809  D0% Ug>  
    Change in Focus                :      -1.354815 ]y1OFKYv  
          8     0.48754161    -0.05649072 k6sI L3QJ0  
    Change in Focus                :       0.215922 :n.f_v}6  
          9     0.40357468    -0.14045766 8>WC5%f*  
    Change in Focus                :       0.281783 lna}@]oR  
         10     0.26315315    -0.28087919 'VlDh`<W  
    Change in Focus                :      -1.048393 Z(ACc9k6:'  
         11     0.26120585    -0.28282649  ng_^  
    Change in Focus                :       1.017611 #py[  
         12     0.24033815    -0.30369419 o .qf _A  
    Change in Focus                :      -0.109292 o'f?YZ$.  
         13     0.37164046    -0.17239188 7:)n$,31FW  
    Change in Focus                :      -0.692430 8p@Piy{p  
         14     0.48597489    -0.05805744 TiO"xMX  
    Change in Focus                :      -0.662040 $0lD>yu  
         15     0.21462327    -0.32940907 CB/D4j;  
    Change in Focus                :       1.611296 n=c 2K c  
         16     0.43378226    -0.11025008 |!"`MIw,  
    Change in Focus                :      -0.640081 ^wc"&;=c|  
         17     0.39321881    -0.15081353 1>E<8&2[L  
    Change in Focus                :       0.914906 c%'RR?Tl  
         18     0.20692530    -0.33710703 3~ S8!nx  
    Change in Focus                :       0.801607 R)RG[F#   
         19     0.51374068    -0.03029165 :=/>Vbd: )  
    Change in Focus                :       0.947293 .tzG_  
         20     0.38013374    -0.16389860 #7 q7PYG4  
    Change in Focus                :       0.667010 IbP#_Vt  
    7lBAxqr2  
    Number of traceable Monte Carlo files generated: 20 }A7j/uy}s  
    f,:9N5Z  
    Nominal     0.54403234 EodQ*{l  
    Best        0.54384387    Trial     2 2L} SJUk*  
    Worst       0.18154684    Trial     4 i-6F:\;  
    Mean        0.35770970 2|}+T6_q  
    Std Dev     0.11156454 -U/c\-~fU  
    fH >NJK;  
    \3S8 62B7  
    Compensator Statistics: <\}KT*Xp  
    Change in back focus: $l|qk  z  
    Minimum            :        -1.354815 t`,` 6@d  
    Maximum            :         1.611296 7U2J xE  
    Mean               :         0.161872 '-"/ =j&d[  
    Standard Deviation :         0.869664 #EsNeBu  
    0iwZT&O  
    90% >       0.20977951               K3x.RQQ-  
    80% >       0.22748071               H s"HID  
    50% >       0.38667627               Ou1JIxZ)|  
    20% >       0.46553746               8'4S8DM  
    10% >       0.50064115                7TDy.]  
    Wu_kx2h  
    End of Run. ?`#/ 8PN  
    30.@g[~  
    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 iMP]W _  
    ktdW`R\+  
    ~ ArP9 K "  
    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 26k LhFS  
    /O^RF}  
    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                 V %YiAr>  
    80% >       0.22748071                 Eg2[k.{P  
    50% >       0.38667627                 kMOpi =Z1  
    20% >       0.46553746                 YH%'t= <m  
    10% >       0.50064115 X(\fN[;  
    we;G]`@?  
    最后这个数值是MTF值呢，还是MTF的公差？ Ar:*oiU  
    pSr{>;bN  
    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？？？   nZ@&2YPlem  
    7"w2$*4'0  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : KM !k$;my  
    90% >       0.20977951                 _x? uU  
    80% >       0.22748071                 C%U`"-%n@7  
    50% >       0.38667627                 L W;heO"  
    20% >       0.46553746                 >9f%@uSM$3  
    10% >       0.50064115 s7l;\XBy  
    ....... OzQ -7|m'J  
    13+<Q \  
    Vg>(  Y,  
    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   \|Ul]1pO8  
    Mode                : Sensitivities X5khCL Hi  
    Sampling            : 2 Ezi-VGjr]  
    Nominal Criterion   : 0.54403234 &E4 0* (C  
    Test Wavelength     : 0.6328  :Mcu  
    !p[9{U->o;  
    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？ 1t Jg#/?  
    p[@5&_u(z  
    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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