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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 ~jF5%Gu  
    w :^b3@gd  
    @jwUH8g1  
    2Ybz`O!  
    然后添加了默认公差分析，基本没变 8)R )h/E>  
    @["Vzg!I6"  
    k`\DC\0RG  
    9dKrE_zK:  
    然后运行分析的结果如下： zZ;tSKL  
    {wA@5+[  
    Analysis of Tolerances [Hn+r &  
    6pr}A  
    File : E:\光学设计资料\zemax练习\f500.ZMX N;Hf7K  
    Title: D5AKOM!`  
    Date : TUE JUN 21 2011 p?Yovckm  
    XPWK"t0 1  
    Units are Millimeters. tw*qlbFHv  
    All changes are computed using linear differences. 0 w@~ynW[  
    kw=+"U   
    Paraxial Focus compensation only. QdDdrR^&  
    m[Zz(tL  
    WARNING: Solves should be removed prior to tolerancing. '<1T>|`/t  
    [lyB@) 6.  
    Mnemonics: 3R4-MK  
    TFRN: Tolerance on curvature in fringes. wXNFL9F8  
    TTHI: Tolerance on thickness. <niHJ*  
    TSDX: Tolerance on surface decentering in x. HESwz{eSS  
    TSDY: Tolerance on surface decentering in y. /6L\`\g  
    TSTX: Tolerance on surface tilt in x (degrees). 7/aJ?:gX  
    TSTY: Tolerance on surface tilt in y (degrees). E$8GXo00v  
    TIRR: Tolerance on irregularity (fringes). tQ=U22&7  
    TIND: Tolerance on Nd index of refraction. ?CmW{9O  
    TEDX: Tolerance on element decentering in x. xx9qi^  
    TEDY: Tolerance on element decentering in y. NUx%zY  
    TETX: Tolerance on element tilt in x (degrees). `<\AnhNW]I  
    TETY: Tolerance on element tilt in y (degrees). p|AIz3  
    3(FJ<,"D}  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 9LCV"xgX  
    5F <zW-;  
    WARNING: Boundary constraints on compensators will be ignored. eJJvEvZ,  
    q[dls_  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm (A(d]l  
    Mode                : Sensitivities Oo=} j  
    Sampling            : 2 /=Q7RJ@P  
    Nominal Criterion   : 0.54403234 wU+ofj; +I  
    Test Wavelength     : 0.6328 trgj]|?M  
    {f3T !e{  
    :X2B+}6_&  
    Fields: XY Symmetric Angle in degrees 4y)"IOd#|  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY | L fH,6  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 t^uX9yvx  
    p^~lQ8t  
    Sensitivity Analysis: O`|'2x{[O  
    atW;S99#  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| :ykQ[d`:|  
    Type                      Value      Criterion        Change          Value      Criterion        Change uCUQxFp  
    Fringe tolerance on surface 1 \Sg&Qv`  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 :K2N7?shA  
    Change in Focus                :      -0.000000                            0.000000 4MIL# 1s  
    Fringe tolerance on surface 2 Hh54&YKZ  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Ybd){Je"z  
    Change in Focus                :       0.000000                            0.000000 X3RpJ#m"'  
    Fringe tolerance on surface 3 n%Nf\z  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Pi)`[\{  
    Change in Focus                :      -0.000000                            0.000000 Pme`UcE3H  
    Thickness tolerance on surface 1  l R;<6  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 xE4T\%-K  
    Change in Focus                :       0.000000                            0.000000 p,ZubR J"  
    Thickness tolerance on surface 2 [/5>)HK} C  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 {kW!|h&'  
    Change in Focus                :       0.000000                           -0.000000 37 M7bB0  
    Decenter X tolerance on surfaces 1 through 3 `2S%l, >)#  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 "&L<u0KHG  
    Change in Focus                :       0.000000                            0.000000 8(uxz84ce  
    Decenter Y tolerance on surfaces 1 through 3 f9OVylm  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Ak>RLD25_  
    Change in Focus                :       0.000000                            0.000000 S/7D}hJ  
    Tilt X tolerance on surfaces 1 through 3 (degrees) . KRh59yg  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 n6ud;jN|  
    Change in Focus                :       0.000000                            0.000000 ab3" ?.3m  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) %&e5i  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 gKS^-X{x  
    Change in Focus                :       0.000000                            0.000000 ) `;?%N\  
    Decenter X tolerance on surface 1 x?Q;o+2v  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 gEPCXf  
    Change in Focus                :       0.000000                            0.000000 8!:4m"Y  
    Decenter Y tolerance on surface 1 YZ/mTQn_D  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 rQ~%SUM7  
    Change in Focus                :       0.000000                            0.000000 tEf-BV;\y  
    Tilt X tolerance on surface (degrees) 1 0/-[k  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 !m]76=@  
    Change in Focus                :       0.000000                            0.000000 H(n_g QAX  
    Tilt Y tolerance on surface (degrees) 1 {N7,=(-2=  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Yxi.A$g  
    Change in Focus                :       0.000000                            0.000000 C7)].vUN  
    Decenter X tolerance on surface 2 yK[ ~(!c5  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 U .e Urzu  
    Change in Focus                :       0.000000                            0.000000 Q.vtU%T  
    Decenter Y tolerance on surface 2 o7hjx hmC  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Z$6W)~;,  
    Change in Focus                :       0.000000                            0.000000 @GjWeOj]  
    Tilt X tolerance on surface (degrees) 2 B4U+q|OD#  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 H( cY=d,  
    Change in Focus                :       0.000000                            0.000000 X0P<ifIv  
    Tilt Y tolerance on surface (degrees) 2 Udd|.JRd  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 :5C9uW #  
    Change in Focus                :       0.000000                            0.000000 5 _] i==M  
    Decenter X tolerance on surface 3 }bjTb!  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 \kC/)d  
    Change in Focus                :       0.000000                            0.000000 O% 9~1_  
    Decenter Y tolerance on surface 3 %Ix^Xb0  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 c AIS?]1  
    Change in Focus                :       0.000000                            0.000000 U_oMR$/Z  
    Tilt X tolerance on surface (degrees) 3 3%k@,Vvt  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 :c<C;.  
    Change in Focus                :       0.000000                            0.000000 6VCw>x  
    Tilt Y tolerance on surface (degrees) 3 `[Z?&'CRQ  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563  UIhB  
    Change in Focus                :       0.000000                            0.000000 "4Anh1,js  
    Irregularity of surface 1 in fringes +gK7`:v4O*  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ` YIpZ rB  
    Change in Focus                :       0.000000                            0.000000 udW, P  
    Irregularity of surface 2 in fringes ]Nsb V  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 E)>6}0P  
    Change in Focus                :       0.000000                            0.000000 i[WTp??Uv  
    Irregularity of surface 3 in fringes =}_c=z?UY  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 X~n Kuo  
    Change in Focus                :       0.000000                            0.000000 #WfJz}P,!  
    Index tolerance on surface 1 `Mp]iD {  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 vmW4a3  
    Change in Focus                :       0.000000                            0.000000 $6ITa}o  
    Index tolerance on surface 2 qdO^)uJJ  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 N[r@Y{  
    Change in Focus                :       0.000000                           -0.000000 >(d+E\!A  
    .KK"KO5k  
    Worst offenders: &W|'rA'r  
    Type                      Value      Criterion        Change SE%i@}  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 h`Y t4-Y  
    TSTY   2             0.20000000     0.35349910    -0.19053324 7|"11^q  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 ;jI\MZ~l\  
    TSTX   2             0.20000000     0.35349910    -0.19053324 1!BV]&,[  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 evtn/.kDR  
    TSTY   1             0.20000000     0.42678383    -0.11724851 qH"0?<$9  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 4}#*M2wb  
    TSTX   1             0.20000000     0.42678383    -0.11724851 #N,\c@Gy  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 wBCnP  
    TSTY   3             0.20000000     0.42861670    -0.11541563 lzl4pnj  
    Auv/w}zrr  
    Estimated Performance Changes based upon Root-Sum-Square method: /WMG)#kw'  
    Nominal MTF                 :     0.54403234 .L6t3/^  
    Estimated change            :    -0.36299231 (7-K4j`   
    Estimated MTF               :     0.18104003 | M-@Qvgh  
    e#&[4tQF  
    Compensator Statistics: | ql!@M(p  
    Change in back focus: ,cgC_ %  
    Minimum            :        -0.000000 &[JI L=m5  
    Maximum            :         0.000000 Og-M nx3  
    Mean               :        -0.000000 T73saeN  
    Standard Deviation :         0.000000 bncK8SK  
    -hhE`Y  
    Monte Carlo Analysis: 9-pd{Z~l  
    Number of trials: 20 QDxLy aL  
    p|Z"< I7p(  
    Initial Statistics: Normal Distribution r_ r+&4n  
    H${Ym BG  
      Trial       Criterion        Change uyAhN  
          1     0.42804416    -0.11598818 qY#*zx  
    Change in Focus                :      -0.400171 ; Sh|6  
          2     0.54384387    -0.00018847 6o6!O l  
    Change in Focus                :       1.018470 :GGsQ n  
          3     0.44510003    -0.09893230 $+*ZsIo   
    Change in Focus                :      -0.601922 $0cMrf@  
          4     0.18154684    -0.36248550 LhV4 ^\+  
    Change in Focus                :       0.920681 -cIc&5CS  
          5     0.28665820    -0.25737414 Na3tK}x  
    Change in Focus                :       1.253875 0@3g'TGl  
          6     0.21263372    -0.33139862 ~oSLWA9  
    Change in Focus                :      -0.903878 AGrGZ7p]  
          7     0.40051424    -0.14351809 TSE(Kt  
    Change in Focus                :      -1.354815 B(b[Dbb  
          8     0.48754161    -0.05649072 c WK@O>  
    Change in Focus                :       0.215922 <2|x]b 8  
          9     0.40357468    -0.14045766 =U|J{^ >I  
    Change in Focus                :       0.281783 }qb z&%R  
         10     0.26315315    -0.28087919 7_q"%xH  
    Change in Focus                :      -1.048393 RAf+%h*  
         11     0.26120585    -0.28282649 gxt2Mq;q~}  
    Change in Focus                :       1.017611 @/|sOF;8W  
         12     0.24033815    -0.30369419 15nc  
    Change in Focus                :      -0.109292 7e}p:Vfp  
         13     0.37164046    -0.17239188 & +%CC  
    Change in Focus                :      -0.692430 P`U5kNN  
         14     0.48597489    -0.05805744 ub.pJJlC  
    Change in Focus                :      -0.662040 d7KeJ$xy}p  
         15     0.21462327    -0.32940907 sM~CP zMa  
    Change in Focus                :       1.611296 X3 a:*1N  
         16     0.43378226    -0.11025008 oqE h_[.  
    Change in Focus                :      -0.640081 `.[hOQ7  
         17     0.39321881    -0.15081353 _k6N(c2Nd  
    Change in Focus                :       0.914906 /Rt/Efu  
         18     0.20692530    -0.33710703 -pkeEuwv{  
    Change in Focus                :       0.801607 zhYE#hv2  
         19     0.51374068    -0.03029165 8|yhe%-O  
    Change in Focus                :       0.947293 SOP= X-6f  
         20     0.38013374    -0.16389860 Hi.JL  
    Change in Focus                :       0.667010 9f BD.9A  
    TD\QX2m  
    Number of traceable Monte Carlo files generated: 20 ?]5wX2G^|J  
    hM>xe8yE  
    Nominal     0.54403234 -Ca.:zX  
    Best        0.54384387    Trial     2 w8{deSdfP  
    Worst       0.18154684    Trial     4 Vvv -f  
    Mean        0.35770970 #9 } Oqm  
    Std Dev     0.11156454 FVF: 1DT  
    lzm9ClkfH  
    QRt(?96  
    Compensator Statistics: i<=@ 7W  
    Change in back focus: |wK)(s  
    Minimum            :        -1.354815 qn4Dm ^  
    Maximum            :         1.611296 <_42h|-  
    Mean               :         0.161872 Az0Yt31=  
    Standard Deviation :         0.869664 r2U2pAy#  
    -AcQ_dS  
    90% >       0.20977951               94K ;=5h  
    80% >       0.22748071               dcXtT3,kpX  
    50% >       0.38667627               guFR5>-L  
    20% >       0.46553746               s'/.ea V_  
    10% >       0.50064115                gs0,-)  
    >@EQarD  
    End of Run. wBeOMA  
    ?]paAP;4  
    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 ^Jc~G~x4*  
    &;%+Hduc  
    cl)MI,/>  
    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  JTz1M~  
    B5tJ|3!  
    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\s-4H| q  
    80% >       0.22748071                 *[vf47)r!  
    50% >       0.38667627                 MN1|k  
    20% >       0.46553746                 z Gz5|u  
    10% >       0.50064115 WP}__1!%u  
    L(8Q%oX%o  
    最后这个数值是MTF值呢，还是MTF的公差？ @aj"1 2  
    _$fxoD9  
    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？？？   x80~j(uVf  
    ]k,fEn(  
    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  : Nzr zLK  
    90% >       0.20977951                 d;'@4NX5+  
    80% >       0.22748071                 FiIN \  
    50% >       0.38667627                 U2SxRFs >  
    20% >       0.46553746                 (M[Kh ^  
    10% >       0.50064115 ; /EH@V|  
    ....... dnN"  
    VF 6@;5p  
    R;,&CQUl  
    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   g]d@X_ &D  
    Mode                : Sensitivities 6,oi(RAf  
    Sampling            : 2 iRPd=)  
    Nominal Criterion   : 0.54403234 f2yc]I<lr~  
    Test Wavelength     : 0.6328 nY(jN D  
    tCA |sN  
    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？ %f, 9  
    Y B)1dzU  
    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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