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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 ,iSs2&$ m  
    pVbX#3  
    rQisk8 %  
     PJk Mn  
    然后添加了默认公差分析，基本没变  J|6aa  
    A.WJ#1i}E  
    9Eg'=YJ  
    '^Sa|WXq  
    然后运行分析的结果如下： y"@~5e477$  
    Q.\+ XR_|  
    Analysis of Tolerances D*D83z OzN  
    I &{dan2  
    File : E:\光学设计资料\zemax练习\f500.ZMX zac>tXU;  
    Title: <PV @JJ"  
    Date : TUE JUN 21 2011 )%,bog(x  
    @ULr)&9  
    Units are Millimeters. aN;L5;m#>{  
    All changes are computed using linear differences. Z8'uZ#=Yw  
    o`RTvG Xk  
    Paraxial Focus compensation only. dC,F?^  
    zI7-xqZ  
    WARNING: Solves should be removed prior to tolerancing. *"9b?`E  
    b GwLfU  
    Mnemonics: 00b )Bg  
    TFRN: Tolerance on curvature in fringes. .P,\69g~A  
    TTHI: Tolerance on thickness. @*%.V.  
    TSDX: Tolerance on surface decentering in x. `]tXQqD  
    TSDY: Tolerance on surface decentering in y. ,T&B.'cq  
    TSTX: Tolerance on surface tilt in x (degrees). :kFWUs=  
    TSTY: Tolerance on surface tilt in y (degrees). Iupk+x>  
    TIRR: Tolerance on irregularity (fringes). )QI]b4[  
    TIND: Tolerance on Nd index of refraction. uv_*E`pN~  
    TEDX: Tolerance on element decentering in x. u1]5qtg"  
    TEDY: Tolerance on element decentering in y. Itz_;+I.Mp  
    TETX: Tolerance on element tilt in x (degrees). ;! CQFJ=  
    TETY: Tolerance on element tilt in y (degrees). BT#'<!7!  
    +8BH%f}X  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. j/^0q90QO  
    _Dk;U*2  
    WARNING: Boundary constraints on compensators will be ignored. vNJ!i\bX  
    {mkYW-4Se  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 1YM04*H  
    Mode                : Sensitivities u[d8)+VX  
    Sampling            : 2 C'5i>;  
    Nominal Criterion   : 0.54403234 $,h*xb.  
    Test Wavelength     : 0.6328 -} Z  
    r."Dc  
    _/MKU!\l  
    Fields: XY Symmetric Angle in degrees @ @# G.  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Q*KEODR8\  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 oPWvZI(\&  
    a_x|PbD  
    Sensitivity Analysis: 9IIe:  
    GD*6tk;5/  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 'M G)noN5  
    Type                      Value      Criterion        Change          Value      Criterion        Change /"/$1F%{  
    Fringe tolerance on surface 1 =VY[m-q5  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 L"('gc!W  
    Change in Focus                :      -0.000000                            0.000000 %AW  
    Fringe tolerance on surface 2 bLNQ%=FjO  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 g7d)YUc  
    Change in Focus                :       0.000000                            0.000000 zo]7#  
    Fringe tolerance on surface 3 6dg[   
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 L:B&`,E  
    Change in Focus                :      -0.000000                            0.000000 2@^8{  
    Thickness tolerance on surface 1 tk, H vE  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 t0?BU~f  
    Change in Focus                :       0.000000                            0.000000 L'[ '7  
    Thickness tolerance on surface 2 cQ+V 4cW Z  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 [_H9l)  
    Change in Focus                :       0.000000                           -0.000000 K<|eZhp~  
    Decenter X tolerance on surfaces 1 through 3 ZC0F:=/K  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 jkPXkysm  
    Change in Focus                :       0.000000                            0.000000 6=  9  
    Decenter Y tolerance on surfaces 1 through 3 44_n5vp,T  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Lw!@[;2  
    Change in Focus                :       0.000000                            0.000000 qe\j$Cjy  
    Tilt X tolerance on surfaces 1 through 3 (degrees) \6@}HFH  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 GH:Au  
    Change in Focus                :       0.000000                            0.000000 k,q` ^E8k  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) ]bS\*q0Zf(  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 N 4,w  
    Change in Focus                :       0.000000                            0.000000 KE(kR>OB]  
    Decenter X tolerance on surface 1 +%>L;'L ^X  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 uYO?Rb&}  
    Change in Focus                :       0.000000                            0.000000 _;0:wXib =  
    Decenter Y tolerance on surface 1 ?|8H $1  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 w@oq.K  
    Change in Focus                :       0.000000                            0.000000 y8,es$  
    Tilt X tolerance on surface (degrees) 1 tpCEWdn5  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 gw5CU)r4$  
    Change in Focus                :       0.000000                            0.000000 e=_*\`/CN  
    Tilt Y tolerance on surface (degrees) 1 2gFQHV  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 lkl#AH  
    Change in Focus                :       0.000000                            0.000000 R?]>8o,  
    Decenter X tolerance on surface 2 :!aFfb["  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 l sUQ7%f  
    Change in Focus                :       0.000000                            0.000000 r%xNfTa  
    Decenter Y tolerance on surface 2 @zPWu}&m  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 oXz:zoNQ  
    Change in Focus                :       0.000000                            0.000000 o]k[l ;  
    Tilt X tolerance on surface (degrees) 2 6o6m"6  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 9N u;0  
    Change in Focus                :       0.000000                            0.000000 +/UInAM  
    Tilt Y tolerance on surface (degrees) 2 &os* @0h4  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 5a_K|(~3I  
    Change in Focus                :       0.000000                            0.000000 6%fU}si,  
    Decenter X tolerance on surface 3 V:IoeQ]-  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ,',fO?Qv'  
    Change in Focus                :       0.000000                            0.000000 V:l; 2rW  
    Decenter Y tolerance on surface 3 }*+ca>K  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 UkeW2l`:  
    Change in Focus                :       0.000000                            0.000000 )DoY*'Cl  
    Tilt X tolerance on surface (degrees) 3 gE8>5_R|  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 242lR0#aY  
    Change in Focus                :       0.000000                            0.000000 =P2T&Gb  
    Tilt Y tolerance on surface (degrees) 3 v'Lckw@G4  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 6i&WF<%D  
    Change in Focus                :       0.000000                            0.000000 cL`l1:j\}  
    Irregularity of surface 1 in fringes 2#|Q =rWB  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 L x(Y=  
    Change in Focus                :       0.000000                            0.000000 !m^WtF  
    Irregularity of surface 2 in fringes /~AajLxu3W  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 @3b0hi4  
    Change in Focus                :       0.000000                            0.000000 i;Gl-b\_h  
    Irregularity of surface 3 in fringes D4 e)v%  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 BDcl1f T  
    Change in Focus                :       0.000000                            0.000000 !5p 01]7  
    Index tolerance on surface 1 TNiF l hq  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Y}F+4   
    Change in Focus                :       0.000000                            0.000000 (\SxG\`  
    Index tolerance on surface 2 o<%Sr*  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 m#8mU,7  
    Change in Focus                :       0.000000                           -0.000000 @0t,vye  
    !QC->  
    Worst offenders: S* <: He&1  
    Type                      Value      Criterion        Change K4oLb"gB1  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 <tFq6|  
    TSTY   2             0.20000000     0.35349910    -0.19053324 o'Po<I  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 QDSB <0j  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Is%-r.i  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 Jd)|== yD  
    TSTY   1             0.20000000     0.42678383    -0.11724851 i) :Q{[D  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Y$% Ze]~  
    TSTX   1             0.20000000     0.42678383    -0.11724851 , gz:2UY#  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 &4p:2,|r9  
    TSTY   3             0.20000000     0.42861670    -0.11541563 j63w(Jv/  
    UJlKw `4  
    Estimated Performance Changes based upon Root-Sum-Square method: <!4'?K-N  
    Nominal MTF                 :     0.54403234 wYS4#7  
    Estimated change            :    -0.36299231 `ZNz Dr  
    Estimated MTF               :     0.18104003 LVO`+:  
    pGUrYik4  
    Compensator Statistics: }JvyjE  
    Change in back focus: |8V+(Vzl  
    Minimum            :        -0.000000 iv3NmkP1  
    Maximum            :         0.000000 b+3{ bE  
    Mean               :        -0.000000 Z wIsEJz  
    Standard Deviation :         0.000000 .y[=0K:  
    .pG_j]  
    Monte Carlo Analysis: Ns&SZO  
    Number of trials: 20 >_tn7Z0 L  
    lts{<AU~  
    Initial Statistics: Normal Distribution 6?(*:}Q  
    qI KVu_  
      Trial       Criterion        Change I?5#Q0,b  
          1     0.42804416    -0.11598818 <C]s\ "o-`  
    Change in Focus                :      -0.400171 bIwt#:v  
          2     0.54384387    -0.00018847 Y+j|T`d  
    Change in Focus                :       1.018470 h<.&,6R  
          3     0.44510003    -0.09893230 o'r?^ *W  
    Change in Focus                :      -0.601922 XG_ lyx%:E  
          4     0.18154684    -0.36248550 * UBU?  
    Change in Focus                :       0.920681 $Jx] FZDQ  
          5     0.28665820    -0.25737414 Tig`4d-%  
    Change in Focus                :       1.253875 l.Qj?G  
          6     0.21263372    -0.33139862 -=2tKH`Q  
    Change in Focus                :      -0.903878 Oz]iHe  
          7     0.40051424    -0.14351809 EXoT$Wt{$  
    Change in Focus                :      -1.354815 2Vt iL^;5  
          8     0.48754161    -0.05649072 s$|GVv1B  
    Change in Focus                :       0.215922 3S +.]v>  
          9     0.40357468    -0.14045766 MhWmY[  
    Change in Focus                :       0.281783 (4x`/  
         10     0.26315315    -0.28087919 oTT/;~I  
    Change in Focus                :      -1.048393 CGny#Vh  
         11     0.26120585    -0.28282649 O~l WFaW  
    Change in Focus                :       1.017611 !&?(ty^F  
         12     0.24033815    -0.30369419 r1JKTuuo  
    Change in Focus                :      -0.109292 Kcl>uAgU  
         13     0.37164046    -0.17239188 ^JJ*pT:  
    Change in Focus                :      -0.692430 E0Ig/ j  
         14     0.48597489    -0.05805744 _}{C?611c  
    Change in Focus                :      -0.662040 Rw=g g >\  
         15     0.21462327    -0.32940907 &mp=jGR  
    Change in Focus                :       1.611296 @e3O=_m-  
         16     0.43378226    -0.11025008 wHAoO#`wn5  
    Change in Focus                :      -0.640081 $yLsuqB}  
         17     0.39321881    -0.15081353 [*]&U6\j  
    Change in Focus                :       0.914906 Nz\=M|@(#  
         18     0.20692530    -0.33710703 d 0$)Y|d>  
    Change in Focus                :       0.801607 Ihw^g <X  
         19     0.51374068    -0.03029165 z3[ J>  
    Change in Focus                :       0.947293 ENr\+{{%  
         20     0.38013374    -0.16389860 K!0vvP2H  
    Change in Focus                :       0.667010 q0SYV  
    jV#{8 8  
    Number of traceable Monte Carlo files generated: 20 <`+U B<K  
    R>BnUIu  
    Nominal     0.54403234 >01&3-r  
    Best        0.54384387    Trial     2 CcG{+-= H)  
    Worst       0.18154684    Trial     4 Uf 1i "VY  
    Mean        0.35770970 iQ~;to;Y  
    Std Dev     0.11156454 ~bf-uHx  
    iYEhrb  
    B_aLqB]U  
    Compensator Statistics: OB.TAoH:  
    Change in back focus: xi %u)p  
    Minimum            :        -1.354815 ncuqo'r  
    Maximum            :         1.611296 i<m1^a#C'  
    Mean               :         0.161872 a;r,*zZ="  
    Standard Deviation :         0.869664 @6~r7/WD  
    &$:1rA_v  
    90% >       0.20977951               xRuAt/aC  
    80% >       0.22748071               { r yv7G  
    50% >       0.38667627               >;-.rJFr  
    20% >       0.46553746               ifHQ2Ug 9  
    10% >       0.50064115                ?>92OuG%W?  
    5 <X.1 T1  
    End of Run. >TK:&V  
    +fBbW::R^  
    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 lZCTthr\  
    x\z* iv  
    p%/Z  
    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 W|XW2`3p  
    @eU;oRVc{  
    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                 #2 Gy=GvV  
    80% >       0.22748071                 %+gK5aVab  
    50% >       0.38667627                 G)5R iRcs  
    20% >       0.46553746                 'y_<O|-  
    10% >       0.50064115 w1>uD]  
    &gGh%:`B  
    最后这个数值是MTF值呢，还是MTF的公差？ 9vX~gh{]~  
    A><w1-X&=o  
    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？？？   JO3"$s|t  
    p SMF1Oy  
    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  : s;!_'1pi@  
    90% >       0.20977951                  |43dyJW  
    80% >       0.22748071                 R` HC EX)  
    50% >       0.38667627                 D\H;_k8  
    20% >       0.46553746                 14DHU  
    10% >       0.50064115 m8ApiGG  
    ....... (&osR|/Tq  
    P Y&(ObC  
    3xX ^pjk  
    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   k[Ue}L|  
    Mode                : Sensitivities ;R[w}#Sm  
    Sampling            : 2 asc Y E  
    Nominal Criterion   : 0.54403234 eHl)/='  
    Test Wavelength     : 0.6328 )45#lE3TH  
    xO_u  
    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？ i9+qU  
    XVfw0-O  
    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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