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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 ^Ea^t.c}_  
    JKYkS*.a}  
    mwqe@7  
    (Z};(Hn  
    然后添加了默认公差分析，基本没变 JdA3O{mT)  
    \}}) U#   
    pr"~W8  
    @D&}ZV=J  
    然后运行分析的结果如下： iN@+,]Yjl  
    w}QU;rl8q  
    Analysis of Tolerances f{u3RCfX~2  
    !T8h+3 I  
    File : E:\光学设计资料\zemax练习\f500.ZMX km#Rh^  
    Title: x4bj?=+  
    Date : TUE JUN 21 2011 %'i`Chc^!;  
    i_qR&X  
    Units are Millimeters. 095Z Z20  
    All changes are computed using linear differences. 1W2hd!J7C  
    "G @(AE(  
    Paraxial Focus compensation only. ob;$yn7ZO1  
    :f58JLX  
    WARNING: Solves should be removed prior to tolerancing. p4'Qki8Hd  
    +zLh<q0  
    Mnemonics: N|L Ey  
    TFRN: Tolerance on curvature in fringes. OQm-BL   
    TTHI: Tolerance on thickness. (GJW3  
    TSDX: Tolerance on surface decentering in x. ZQPv@6+oY  
    TSDY: Tolerance on surface decentering in y.  } h0 )  
    TSTX: Tolerance on surface tilt in x (degrees). nd1%txIsr  
    TSTY: Tolerance on surface tilt in y (degrees). a8!/V@a  
    TIRR: Tolerance on irregularity (fringes). Yv[j5\:x  
    TIND: Tolerance on Nd index of refraction. ^qlfdf  
    TEDX: Tolerance on element decentering in x. 5PU$D`7it  
    TEDY: Tolerance on element decentering in y. 34\:1z+s M  
    TETX: Tolerance on element tilt in x (degrees). \+B+M 7  
    TETY: Tolerance on element tilt in y (degrees). \%D/]"@r  
    $x %VUms  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. -P>f2It  
    LlfD>cN  
    WARNING: Boundary constraints on compensators will be ignored. @`6db  
    cfEi]  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 3d@$iAw1<  
    Mode                : Sensitivities Pq:GvM`  
    Sampling            : 2 ? 3 l4U  
    Nominal Criterion   : 0.54403234 =8F]cW'1`  
    Test Wavelength     : 0.6328 : {Crc   
    j3`"9bY  
    aD,(mw-7r  
    Fields: XY Symmetric Angle in degrees M4:}`p=  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY p;VHg  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 Kqt,sJ  
    ^"!j m  
    Sensitivity Analysis: a:(.{z?nM  
    !@x'?+   
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| ]7`)|PJ  
    Type                      Value      Criterion        Change          Value      Criterion        Change S%7^7MSqA  
    Fringe tolerance on surface 1 ?u9JRXj%  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 _XqD3?yH4  
    Change in Focus                :      -0.000000                            0.000000 =fZ)2q  
    Fringe tolerance on surface 2 MQv2C@K9F  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 D<2|&xaR  
    Change in Focus                :       0.000000                            0.000000 cH!w;U b]  
    Fringe tolerance on surface 3 >dW~o_u'QN  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 xN +j]L C  
    Change in Focus                :      -0.000000                            0.000000 W1 qE,%cx  
    Thickness tolerance on surface 1 G3&l|@5  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Z+< zKn}  
    Change in Focus                :       0.000000                            0.000000 P7Ws$7x  
    Thickness tolerance on surface 2 ^sNj[%I R  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 9aE!! (E  
    Change in Focus                :       0.000000                           -0.000000 iS{8cN3R  
    Decenter X tolerance on surfaces 1 through 3 j'V# =vH  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 t6u01r{~`  
    Change in Focus                :       0.000000                            0.000000 *$ihNX]YG  
    Decenter Y tolerance on surfaces 1 through 3 <XV\8Y+n  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 XD 8MF)$9  
    Change in Focus                :       0.000000                            0.000000 rN'')n/F  
    Tilt X tolerance on surfaces 1 through 3 (degrees) _[,oP s:+  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 NiwJ$Ah~X  
    Change in Focus                :       0.000000                            0.000000  ?vgHu  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) zd+_ BPT  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 qe!\ oh  
    Change in Focus                :       0.000000                            0.000000 ",\,lqV  
    Decenter X tolerance on surface 1 G6N$^HkW?  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Vn`-w  
    Change in Focus                :       0.000000                            0.000000 [4qx+ypT  
    Decenter Y tolerance on surface 1 }?pY~f  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 S[bFS7[  
    Change in Focus                :       0.000000                            0.000000 _z<y]?q  
    Tilt X tolerance on surface (degrees) 1 c8cV{}7Kb  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 (1r.AG`g  
    Change in Focus                :       0.000000                            0.000000 tkFGGc}w\  
    Tilt Y tolerance on surface (degrees) 1 k:Iz>3O3]  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 wj fk >  
    Change in Focus                :       0.000000                            0.000000 2[W1EQI  
    Decenter X tolerance on surface 2 $ePBw~yu  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 3%<Uq%pJ  
    Change in Focus                :       0.000000                            0.000000 KrhAObK  
    Decenter Y tolerance on surface 2 0k?ph$  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 9Se7 1  
    Change in Focus                :       0.000000                            0.000000 vxxa,KR/y  
    Tilt X tolerance on surface (degrees) 2 R0R Xw  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 'Jb6CR n  
    Change in Focus                :       0.000000                            0.000000 S+Aq0B<  
    Tilt Y tolerance on surface (degrees) 2 wL'tGAv  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 [/}y!;3iXM  
    Change in Focus                :       0.000000                            0.000000 FF"6~  
    Decenter X tolerance on surface 3 smpz/1U  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 s }]qlg  
    Change in Focus                :       0.000000                            0.000000 .!ThqYo  
    Decenter Y tolerance on surface 3 :>U2yI  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 JfmNI~%  
    Change in Focus                :       0.000000                            0.000000 GbC-6.~  
    Tilt X tolerance on surface (degrees) 3 =#@eDm%  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 =(f+geA"hm  
    Change in Focus                :       0.000000                            0.000000 [TAW68f'  
    Tilt Y tolerance on surface (degrees) 3 8*nl Wl9qo  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 =v4;t'_^  
    Change in Focus                :       0.000000                            0.000000 EK^B=)q6:W  
    Irregularity of surface 1 in fringes o0Z(BTO  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 =)Cqjp  
    Change in Focus                :       0.000000                            0.000000 !c`K zqP  
    Irregularity of surface 2 in fringes WxE4r  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 SMr ]Gf.  
    Change in Focus                :       0.000000                            0.000000 289@O-  
    Irregularity of surface 3 in fringes M <oy  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ,~ D_T  
    Change in Focus                :       0.000000                            0.000000 [E_eaez7#  
    Index tolerance on surface 1 D-7PO3F:F  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 FE+Y#  
    Change in Focus                :       0.000000                            0.000000 ;\@co5.=  
    Index tolerance on surface 2 "HRoS#|\  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 :"+/M{qz  
    Change in Focus                :       0.000000                           -0.000000 7 tOOruiC  
    8Wn;U!qT  
    Worst offenders: Ca[H<nyj  
    Type                      Value      Criterion        Change ~{,U%B  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 lW^bn(_gQ  
    TSTY   2             0.20000000     0.35349910    -0.19053324 EP.nVvuL  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 b[Z5:[@\#  
    TSTX   2             0.20000000     0.35349910    -0.19053324 j';V(ZY&BB  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 mE3^5}[>  
    TSTY   1             0.20000000     0.42678383    -0.11724851 0n25{N  
    TSTX   1            -0.20000000     0.42678383    -0.11724851  (f DA  
    TSTX   1             0.20000000     0.42678383    -0.11724851 S^,1N 4  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 9$&+0  
    TSTY   3             0.20000000     0.42861670    -0.11541563 ?@U7tNI  
    xjHOrr OQ  
    Estimated Performance Changes based upon Root-Sum-Square method: 8r^~`rL  
    Nominal MTF                 :     0.54403234 $vNz^!zgV  
    Estimated change            :    -0.36299231 =VMV^[&>  
    Estimated MTF               :     0.18104003 l0Myem v?z  
     y{h y  
    Compensator Statistics: D8a[zXWnc  
    Change in back focus: =%, ;=4w  
    Minimum            :        -0.000000 0GR\iw$[J  
    Maximum            :         0.000000 *={` %  
    Mean               :        -0.000000 G1 ?."  
    Standard Deviation :         0.000000 +*2wGAT  
    ZCJOh8  
    Monte Carlo Analysis: |oq27*ix~m  
    Number of trials: 20 CmaV>  
    MWv_BXQ  
    Initial Statistics: Normal Distribution 6"^Yn.  
    S Rs~p  
      Trial       Criterion        Change N&`VMEB)k  
          1     0.42804416    -0.11598818 uT8@p8  
    Change in Focus                :      -0.400171 G% wVQ|1  
          2     0.54384387    -0.00018847 *')g}2iB  
    Change in Focus                :       1.018470 i6R2R8  
          3     0.44510003    -0.09893230 i"=6n>\  
    Change in Focus                :      -0.601922 6Z~u2&  
          4     0.18154684    -0.36248550 v)|[=  
    Change in Focus                :       0.920681 z?$F2+f&  
          5     0.28665820    -0.25737414 YQ}xr^VA  
    Change in Focus                :       1.253875 IUco 8  
          6     0.21263372    -0.33139862 kTG4h@w  
    Change in Focus                :      -0.903878 3L$_OXx  
          7     0.40051424    -0.14351809 (lwrk(  
    Change in Focus                :      -1.354815 8'Dp3x^W>  
          8     0.48754161    -0.05649072 B .p&,K  
    Change in Focus                :       0.215922 BIf E+L(  
          9     0.40357468    -0.14045766 2j_YHv$I  
    Change in Focus                :       0.281783 -.A%c(|Q  
         10     0.26315315    -0.28087919 cstSLXD  
    Change in Focus                :      -1.048393 o:kiIZ]  
         11     0.26120585    -0.28282649 >AsD6]  
    Change in Focus                :       1.017611 qbjBN z  
         12     0.24033815    -0.30369419 wD|,G!8E2  
    Change in Focus                :      -0.109292 y9d[-j ;w  
         13     0.37164046    -0.17239188 6AeX$>k+  
    Change in Focus                :      -0.692430 m,nZrap  
         14     0.48597489    -0.05805744 $mvcqn;  
    Change in Focus                :      -0.662040 Xz)UH<  
         15     0.21462327    -0.32940907 Js7(TFQE  
    Change in Focus                :       1.611296 OU;R;=/]  
         16     0.43378226    -0.11025008 74YMFI   
    Change in Focus                :      -0.640081 1{N73]-M:  
         17     0.39321881    -0.15081353 5b X*8H D  
    Change in Focus                :       0.914906 "dfq  
         18     0.20692530    -0.33710703 ^UP!y!&N  
    Change in Focus                :       0.801607 jR-`ee}y2  
         19     0.51374068    -0.03029165 *Dr-{\9  
    Change in Focus                :       0.947293 y6.}h9~  
         20     0.38013374    -0.16389860 lqFDX d  
    Change in Focus                :       0.667010 hS]g^S==2h  
    2XhtK  
    Number of traceable Monte Carlo files generated: 20 yidUtSv=,  
    :5!>h8p;  
    Nominal     0.54403234 9{{QdN8  
    Best        0.54384387    Trial     2 +jzwi3B`  
    Worst       0.18154684    Trial     4 (_G&S~@.  
    Mean        0.35770970 fE"Q:K6r2  
    Std Dev     0.11156454 dz fR ^Gv  
    mG4myQ?$  
    QC7Ceeh]4  
    Compensator Statistics: R;,&s!\<  
    Change in back focus: Uc,D&Og  
    Minimum            :        -1.354815 H..g2;D  
    Maximum            :         1.611296 / fBi9=}+  
    Mean               :         0.161872 P7GuFn/p~2  
    Standard Deviation :         0.869664 _2Sb?]Xn  
    SS?^-BI  
    90% >       0.20977951               9(?9yFbj5  
    80% >       0.22748071                W7I.S5  
    50% >       0.38667627               ]v=*WK  
    20% >       0.46553746               >ZMB}pt`  
    10% >       0.50064115                +`pS 7d  
    WP)r5;Hv`  
    End of Run. 5W/!o&x~7  
    noY~fq/U  
    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 Pw`26mB   
    ,lK=m~  
    b&:>v9U  
    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 a12Q/K  
    [fF0Qa-  
    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                 Y ,1ZvUOB  
    80% >       0.22748071                 ^PwZP;On  
    50% >       0.38667627                 s"u6po.'  
    20% >       0.46553746                 ckR>ps[u  
    10% >       0.50064115 P2y`d9,Q  
    K9{3,!1  
    最后这个数值是MTF值呢，还是MTF的公差？ e/+_tC$@p@  
    |wF_CZ*1  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   bf1Tky=/  
    0,~f"Dyqy  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : [zC1LTXe  
    90% >       0.20977951                 ]et ]Vkg  
    80% >       0.22748071                 wDQ@$T^vh  
    50% >       0.38667627                 M&QzsVH  
    20% >       0.46553746                 xL&evG#  
    10% >       0.50064115 k kZ2Jxvx  
    ....... [c^!;YBp)  
    XC(:O(jdA2  
    .2Q4EbM2  
    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`th&331  
    Mode                : Sensitivities eS`ZC!W   
    Sampling            : 2 bcR";cE  
    Nominal Criterion   : 0.54403234 t!8(IR  
    Test Wavelength     : 0.6328 ; Sd== *  
    Aaw]=8 OI  
    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？ 1gA^Qv~?  
    bhl9:`s  
    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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