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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 }bN%u3mHws  
    <FMq>d$\  
    DRqZ,[!+  
    b" xmqWa  
    然后添加了默认公差分析，基本没变 MMB@.W  
    J"=1/,AS  
    Om{l>24i.\  
    {3})=>u:S  
    然后运行分析的结果如下： 3nT Z)L }  
    43?^7_l-  
    Analysis of Tolerances qq)0yyL r  
    m)V/L]4  
    File : E:\光学设计资料\zemax练习\f500.ZMX AL$&|=C-$  
    Title: !D!~ ^\  
    Date : TUE JUN 21 2011 '$4O!YI9@  
    G}5#l  
    Units are Millimeters. t8^m`W  
    All changes are computed using linear differences. ]yjl~3  
    s yU9O&<  
    Paraxial Focus compensation only. m}>F<;hQ  
    go+Q~NV   
    WARNING: Solves should be removed prior to tolerancing. b jAnaya  
    GgaTn!mJt  
    Mnemonics: ZmOfEg|h\  
    TFRN: Tolerance on curvature in fringes. $+.l*]  
    TTHI: Tolerance on thickness. ]Jh+'RK\#  
    TSDX: Tolerance on surface decentering in x. %m:m}ziLQ  
    TSDY: Tolerance on surface decentering in y. G'YH6x,  
    TSTX: Tolerance on surface tilt in x (degrees). .2J L$"  
    TSTY: Tolerance on surface tilt in y (degrees). eEhr140  
    TIRR: Tolerance on irregularity (fringes). XLMb=T~S  
    TIND: Tolerance on Nd index of refraction. # :T-hRu  
    TEDX: Tolerance on element decentering in x. .NtbL./=|  
    TEDY: Tolerance on element decentering in y. M#|dIbns H  
    TETX: Tolerance on element tilt in x (degrees). cA6lge<{~  
    TETY: Tolerance on element tilt in y (degrees).  L4uFNM]  
    Sq:0w  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. cRX~z  
    5[j`6l  
    WARNING: Boundary constraints on compensators will be ignored. - 0?^#G}3}  
    jxJv.  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 6<K6Y5<6  
    Mode                : Sensitivities 7d92 Pe  
    Sampling            : 2 ''\;z<v   
    Nominal Criterion   : 0.54403234 ~4q5 k5.,  
    Test Wavelength     : 0.6328 P{Q=mEQ  
    r J KZ)N{  
    UT}i0I9  
    Fields: XY Symmetric Angle in degrees p4p@^@<>X  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY NBb6T V}j  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 bQ|V!mrN}  
    +cU>k}  
    Sensitivity Analysis: ?5kHa_^  
    !mXxAo  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| |yo\R{&6  
    Type                      Value      Criterion        Change          Value      Criterion        Change Y.^=]-n,  
    Fringe tolerance on surface 1 m7T)m0  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 p}[zt#v  
    Change in Focus                :      -0.000000                            0.000000 0ZQ'_g|%  
    Fringe tolerance on surface 2 ktDC/8  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 _)]CzBRq\6  
    Change in Focus                :       0.000000                            0.000000 4 Jx"A\5*G  
    Fringe tolerance on surface 3 jD7NblX  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 G%d (  
    Change in Focus                :      -0.000000                            0.000000 wcDRH)AW.  
    Thickness tolerance on surface 1 m|OO,gR  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 BB|?1"neg  
    Change in Focus                :       0.000000                            0.000000 Pz$R(TV  
    Thickness tolerance on surface 2 a1Qv@p^._b  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 MQin"\  
    Change in Focus                :       0.000000                           -0.000000 C* nB  
    Decenter X tolerance on surfaces 1 through 3 %v2R.?F8  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 \=>H6x]q  
    Change in Focus                :       0.000000                            0.000000 '=P7""mN5  
    Decenter Y tolerance on surfaces 1 through 3 9)VF 1LD  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 O9:U8$*  
    Change in Focus                :       0.000000                            0.000000 BL&LeSa  
    Tilt X tolerance on surfaces 1 through 3 (degrees) svXR<7) #  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 7 I>G{  
    Change in Focus                :       0.000000                            0.000000 h;3cd0  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ^_lzZOhG  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 -(K9s!C!.  
    Change in Focus                :       0.000000                            0.000000 x`6<m!d`  
    Decenter X tolerance on surface 1 Pb*5eXk  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 "Ky; a?Y  
    Change in Focus                :       0.000000                            0.000000 Ks}Xgc\  
    Decenter Y tolerance on surface 1 2k<;R':  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 F`9]=T0  
    Change in Focus                :       0.000000                            0.000000 Is+O  
    Tilt X tolerance on surface (degrees) 1 >3&O::]3  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 "O(9m.CZ  
    Change in Focus                :       0.000000                            0.000000 `=7j$#6U  
    Tilt Y tolerance on surface (degrees) 1 jv&!Kw.Ug  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 'fPdpnJ<  
    Change in Focus                :       0.000000                            0.000000 Li Kxq=K  
    Decenter X tolerance on surface 2 UT="2*3gz  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 8zMu7,E  
    Change in Focus                :       0.000000                            0.000000 |hr]>P1  
    Decenter Y tolerance on surface 2 r;m)nRu  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 n9s iX  
    Change in Focus                :       0.000000                            0.000000 VsA'de!V4[  
    Tilt X tolerance on surface (degrees) 2 >|;aIa@9  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ;`6^6p\p  
    Change in Focus                :       0.000000                            0.000000 qpXWi &g  
    Tilt Y tolerance on surface (degrees) 2 E }ZJ)V7  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ]KJj6xn  
    Change in Focus                :       0.000000                            0.000000 2=_g f  
    Decenter X tolerance on surface 3 Ge<nxl<Bd  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 vv=VRhwF  
    Change in Focus                :       0.000000                            0.000000 f^VP/rdg  
    Decenter Y tolerance on surface 3 : >>@rF ,  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 (T2m"Yi:  
    Change in Focus                :       0.000000                            0.000000 r7',3V  
    Tilt X tolerance on surface (degrees) 3 8.[SU  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 be +4junf  
    Change in Focus                :       0.000000                            0.000000 }*L(;r)q  
    Tilt Y tolerance on surface (degrees) 3 %AQIGBcgL  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 7NJhRz`_  
    Change in Focus                :       0.000000                            0.000000 RZ+`T+zL  
    Irregularity of surface 1 in fringes /d%=E  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 G\(|N9^:  
    Change in Focus                :       0.000000                            0.000000 H<3I 5Kgt  
    Irregularity of surface 2 in fringes M|R b&6O  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 |DsnNk0c  
    Change in Focus                :       0.000000                            0.000000 0'IBN}  
    Irregularity of surface 3 in fringes YY!Rz[/  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 7nuU^wc  
    Change in Focus                :       0.000000                            0.000000 f%*/cpA)  
    Index tolerance on surface 1 #f+$Ddg*  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578  z^<"x |:  
    Change in Focus                :       0.000000                            0.000000 6R^^.tCs  
    Index tolerance on surface 2 C 9t4#"  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 4]E3c AJ  
    Change in Focus                :       0.000000                           -0.000000 cb}[S:&|  
    _F`lq_C  
    Worst offenders: /3{b%0Aa  
    Type                      Value      Criterion        Change Gh}*q|Lz  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 !@v7Zu43,  
    TSTY   2             0.20000000     0.35349910    -0.19053324 |vw"[7_aS  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 #{\%rWnCm  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Er{>p|n =  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 5D'\b}*lJ}  
    TSTY   1             0.20000000     0.42678383    -0.11724851 )KAEt.  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 \o^2y.q:>  
    TSTX   1             0.20000000     0.42678383    -0.11724851 r >nG@A  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 m|G'K[8  
    TSTY   3             0.20000000     0.42861670    -0.11541563 &Udb9  
    Cid ;z  
    Estimated Performance Changes based upon Root-Sum-Square method: Z+=@<i''  
    Nominal MTF                 :     0.54403234 .;N1N^  
    Estimated change            :    -0.36299231 S.f5v8  
    Estimated MTF               :     0.18104003 q*>&^V$M  
    X93!bB  
    Compensator Statistics: WILMH`  
    Change in back focus: >j QWn@  
    Minimum            :        -0.000000 5bg s*.s  
    Maximum            :         0.000000 w Y_)y  
    Mean               :        -0.000000 7yh /BZ1  
    Standard Deviation :         0.000000 c.e2M/  
    $A-J,_:T<  
    Monte Carlo Analysis: %B.yW`,X  
    Number of trials: 20 J G{3EWXR  
    @8I4[TE  
    Initial Statistics: Normal Distribution AQwdw>I-FX  
    +csi[c)3E  
      Trial       Criterion        Change U3dwI:cG  
          1     0.42804416    -0.11598818 (:> ,u*x%  
    Change in Focus                :      -0.400171 73\JwOn~  
          2     0.54384387    -0.00018847 [wzb<"kW  
    Change in Focus                :       1.018470 k5kxQhPf  
          3     0.44510003    -0.09893230 BNs@n"k  
    Change in Focus                :      -0.601922 lp^<3o*1  
          4     0.18154684    -0.36248550 mUik A9u5=  
    Change in Focus                :       0.920681 V: TM]  
          5     0.28665820    -0.25737414 |3KLk?2  
    Change in Focus                :       1.253875 TtTj28 k7  
          6     0.21263372    -0.33139862 7x%R:^*4  
    Change in Focus                :      -0.903878 #$8% w  
          7     0.40051424    -0.14351809 wLnf@&jQ%  
    Change in Focus                :      -1.354815 1 P!Yxeh  
          8     0.48754161    -0.05649072 )`O~f_pIC  
    Change in Focus                :       0.215922 m0a?LY  
          9     0.40357468    -0.14045766 x5-}h*  
    Change in Focus                :       0.281783 v : OR   
         10     0.26315315    -0.28087919 .E8_Oz  
    Change in Focus                :      -1.048393 kZGRxp9  
         11     0.26120585    -0.28282649  abfW[J  
    Change in Focus                :       1.017611 U ^5Kz-5.  
         12     0.24033815    -0.30369419 7%|~>  
    Change in Focus                :      -0.109292 Zm_UR*"  
         13     0.37164046    -0.17239188 T~##,qQ  
    Change in Focus                :      -0.692430 &keR~~/  
         14     0.48597489    -0.05805744 FwkuC09tI  
    Change in Focus                :      -0.662040 ?WqT[MnK  
         15     0.21462327    -0.32940907 naR0@Q"\h  
    Change in Focus                :       1.611296 4i(JZN?  
         16     0.43378226    -0.11025008 GkTiDm?  
    Change in Focus                :      -0.640081 ~lsl@  
         17     0.39321881    -0.15081353 UMm!B`M  
    Change in Focus                :       0.914906 Zy?Hi`  
         18     0.20692530    -0.33710703 ic#`N0s?  
    Change in Focus                :       0.801607 {CGUL|y  
         19     0.51374068    -0.03029165 '6cWS'9"  
    Change in Focus                :       0.947293 L"1}V  
         20     0.38013374    -0.16389860 wc}5m Hs  
    Change in Focus                :       0.667010 Ki$MpA3j   
    BMG3|N^  
    Number of traceable Monte Carlo files generated: 20 eo?;`7  
    .yqM7U_  
    Nominal     0.54403234 q=Sgk>NA  
    Best        0.54384387    Trial     2 pS'FI@.'{  
    Worst       0.18154684    Trial     4 pm 9"4z  
    Mean        0.35770970 lvBx\e;7P  
    Std Dev     0.11156454 PGhY>$q>b  
    CR"|^{G  
    /-_h1.!   
    Compensator Statistics: 8m\7*l^D:  
    Change in back focus: 4gz H8sF  
    Minimum            :        -1.354815 mpU$ +  
    Maximum            :         1.611296 v4`"1Ss,K  
    Mean               :         0.161872 0zlb0[  
    Standard Deviation :         0.869664 :toh0oB[  
    :OhHb #D  
    90% >       0.20977951               qG?Qc (  
    80% >       0.22748071               7XTkX"zKj  
    50% >       0.38667627               vgH3<pDiU6  
    20% >       0.46553746               * K D I}B>  
    10% >       0.50064115                jHE}qE~>5  
    i@)i$i4  
    End of Run. aW)-?(6>  
    @s ?  
    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 N~goI#4  
    `>f6) C-  
    e,vvzs o  
    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 tl,.fjZn  
    *`ua'"="k  
    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                 #^l L5=  
    80% >       0.22748071                 #%a;"w  
    50% >       0.38667627                 &gVN&  
    20% >       0.46553746                 R} eN@#"D  
    10% >       0.50064115 sT3^hY7  
    zT =Ho   
    最后这个数值是MTF值呢，还是MTF的公差？ 4ni<E*  
    @Lpq~ 1eZB  
    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？？？   8'r2D+Vwm  
    ][gq#Vx@  
    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  : 2QD3&Q9  
    90% >       0.20977951                 @E;=*9ek{u  
    80% >       0.22748071                 1{r3#MVL  
    50% >       0.38667627                 whmdcVh.  
    20% >       0.46553746                 *EOdEFsR/  
    10% >       0.50064115 i'a?kSy  
    ....... d:ARf  
    "oTHq]Ku  
    un)4eo!7  
    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   !2 LCLN\  
    Mode                : Sensitivities ]Uw<$!$-]s  
    Sampling            : 2 z{[xze-f  
    Nominal Criterion   : 0.54403234 ?p9VO.^5  
    Test Wavelength     : 0.6328 :?k>HQe  
    AuUd e$l_  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
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    只看该作者 6楼 发表于: 2011-06-24
    回 5楼(天地大同) 的帖子
    谢谢。您说的“波长632.8nm 时 mtf 是 0.54403234  没达到0.6”这是一个评价标准吧？ __`*dL>*  
    x9$` W  
    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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