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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 ``wSc0\  
    L 4!{h|  
    JvY}-}?c  
    ,^uEYT}j  
    然后添加了默认公差分析,基本没变 Djg,Lvhm  
    FCnm1x#  
    ^]TVo\,N  
    6i1LjLB  
    然后运行分析的结果如下: :Nz9xD$S5  
    \otWd  
    Analysis of Tolerances PYGRsrcFd#  
    euC&0Ee2  
    File : E:\光学设计资料\zemax练习\f500.ZMX y&V@^ "`  
    Title: =3L;Z[^9  
    Date : TUE JUN 21 2011 Z<vKQ4 G  
    V#iPj'*   
    Units are Millimeters. p6;OL@ \~  
    All changes are computed using linear differences. r-Pkfy(  
    EM[WK+9>I{  
    Paraxial Focus compensation only. 8uWa=C)  
    =>_\fNy  
    WARNING: Solves should be removed prior to tolerancing. lhqg$lb  
    C#Na&m  
    Mnemonics: \SB c;  
    TFRN: Tolerance on curvature in fringes. INJEsz  
    TTHI: Tolerance on thickness. k7T`bYv  
    TSDX: Tolerance on surface decentering in x. U H*r5o3  
    TSDY: Tolerance on surface decentering in y. c-(UhN3WG  
    TSTX: Tolerance on surface tilt in x (degrees). Dy:|g1>  
    TSTY: Tolerance on surface tilt in y (degrees). |a Vn&qK  
    TIRR: Tolerance on irregularity (fringes). (jAg_$6  
    TIND: Tolerance on Nd index of refraction. ?vbvBu{a  
    TEDX: Tolerance on element decentering in x. `Tv[DIVW  
    TEDY: Tolerance on element decentering in y. njputEGX  
    TETX: Tolerance on element tilt in x (degrees). eS~LF.^Jw  
    TETY: Tolerance on element tilt in y (degrees). ?`PvL!'  
    ui/a|Q  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 5:KQg  
    'F9jq  
    WARNING: Boundary constraints on compensators will be ignored. Pu"P9  
    zd >t-?g  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Xg;}R:g '  
    Mode                : Sensitivities \RC'XKQ*n  
    Sampling            : 2 ?gt l)q  
    Nominal Criterion   : 0.54403234 *^VRGfpb  
    Test Wavelength     : 0.6328 \D*KGd]M0  
    V<T9&8l+:  
    6\q]rfQ  
    Fields: XY Symmetric Angle in degrees K3#@SY j  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 6[ j.@[t  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 b?tB(if!I  
    %D\[*  
    Sensitivity Analysis: x"~8*V'0  
    #."-#"0  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| Q7jb'y$ozO  
    Type                      Value      Criterion        Change          Value      Criterion        Change z`f($t[  
    Fringe tolerance on surface 1 #_^Lb]jkM  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374  Ac2n  
    Change in Focus                :      -0.000000                            0.000000 l 3ko?k  
    Fringe tolerance on surface 2 ix)M`F%P3  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 $QLcH;+7t  
    Change in Focus                :       0.000000                            0.000000 Ch <[l8;K  
    Fringe tolerance on surface 3 Qp_isU  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 |EX(8y  
    Change in Focus                :      -0.000000                            0.000000 #P0&ewy  
    Thickness tolerance on surface 1 Krqtf  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 +0nJ  
    Change in Focus                :       0.000000                            0.000000 g| I6'K!<  
    Thickness tolerance on surface 2 :V RNs  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 keL&b/@  
    Change in Focus                :       0.000000                           -0.000000 v$?+MNks  
    Decenter X tolerance on surfaces 1 through 3 mwHB(7YS,  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 8]/bK5`  
    Change in Focus                :       0.000000                            0.000000 Vc\MV0lr  
    Decenter Y tolerance on surfaces 1 through 3 chM%]|gey  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 <Tzrj1"Q3  
    Change in Focus                :       0.000000                            0.000000 %)zodf  
    Tilt X tolerance on surfaces 1 through 3 (degrees) Vc&! OE  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 3no%E03p  
    Change in Focus                :       0.000000                            0.000000 V5V bJBpf  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) S9]'?|  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 E7j(QO f  
    Change in Focus                :       0.000000                            0.000000 [9evz}X  
    Decenter X tolerance on surface 1 PUp6Q;AdQ  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ayR-\mZ  
    Change in Focus                :       0.000000                            0.000000 1"MhGNynB>  
    Decenter Y tolerance on surface 1 [1g8*j~L  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 [=6]+V83M  
    Change in Focus                :       0.000000                            0.000000 #rMlI3;  
    Tilt X tolerance on surface (degrees) 1 ;=)k<6  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Dp,L/1GQ8  
    Change in Focus                :       0.000000                            0.000000 #+ 0M2Sa  
    Tilt Y tolerance on surface (degrees) 1 Lb:g4A"  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 V_ :1EBzz  
    Change in Focus                :       0.000000                            0.000000 ,w<S|#W~+  
    Decenter X tolerance on surface 2 sJL&:!}V>  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 j4gF;-m<  
    Change in Focus                :       0.000000                            0.000000 nLbFg0?+t  
    Decenter Y tolerance on surface 2 Ns>- o  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 1H? u Qy  
    Change in Focus                :       0.000000                            0.000000 t<.)Z-Ii  
    Tilt X tolerance on surface (degrees) 2 7zXvnxYE  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324  eI$oLl@  
    Change in Focus                :       0.000000                            0.000000 X`kk]8 =  
    Tilt Y tolerance on surface (degrees) 2 'f!8DGix  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 cLpYW7vZ[  
    Change in Focus                :       0.000000                            0.000000 [+2[`K c]  
    Decenter X tolerance on surface 3 ##,a0s^  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 XKj|f`  
    Change in Focus                :       0.000000                            0.000000 n\Z!ff/  
    Decenter Y tolerance on surface 3 gX@HO|.t  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 _C%3h5  
    Change in Focus                :       0.000000                            0.000000 :;t:H] f  
    Tilt X tolerance on surface (degrees) 3 "jeb%k  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 :3v}kLO7|  
    Change in Focus                :       0.000000                            0.000000 Yg]-wQrH  
    Tilt Y tolerance on surface (degrees) 3 + [iQLM?zo  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 uw>Ba %5  
    Change in Focus                :       0.000000                            0.000000 SE@LYeC}dE  
    Irregularity of surface 1 in fringes %aG5F}S2~  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 k^3>Y%^1  
    Change in Focus                :       0.000000                            0.000000 [_R~%Yh+'E  
    Irregularity of surface 2 in fringes }NHaCG[,  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 p|X"@kuseO  
    Change in Focus                :       0.000000                            0.000000 Qf~vZtJ+J  
    Irregularity of surface 3 in fringes <GS^  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 DrKP%BnS  
    Change in Focus                :       0.000000                            0.000000 B]nEkO'a:  
    Index tolerance on surface 1 BRw .]&/  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 yZ0-wI  
    Change in Focus                :       0.000000                            0.000000 w$3 ,A$8  
    Index tolerance on surface 2 ~8'sBT  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ePOG}k($/%  
    Change in Focus                :       0.000000                           -0.000000 $t$ShT)  
    ($q-_m  
    Worst offenders: Nyku4r0  
    Type                      Value      Criterion        Change Z;h t  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 ;v}GJ<3  
    TSTY   2             0.20000000     0.35349910    -0.19053324 %f&/E"M  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 QyEn pZ8?a  
    TSTX   2             0.20000000     0.35349910    -0.19053324 /C:Y94B-z  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 G)EU_UE 9  
    TSTY   1             0.20000000     0.42678383    -0.11724851 8 }I$'x  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 qzYwt]GNS  
    TSTX   1             0.20000000     0.42678383    -0.11724851 [;n9:Qxf  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 R3 -n>V5o  
    TSTY   3             0.20000000     0.42861670    -0.11541563 K^ vIUZ>  
    |U:k,YH  
    Estimated Performance Changes based upon Root-Sum-Square method: E-T)*`e  
    Nominal MTF                 :     0.54403234 C8J[Up  
    Estimated change            :    -0.36299231 rMdt:`  
    Estimated MTF               :     0.18104003 Ot4 Z{mA  
    S3q&rqarC%  
    Compensator Statistics: UFXaEl}R   
    Change in back focus: v"y-0$M  
    Minimum            :        -0.000000 %^?fMeI|Y  
    Maximum            :         0.000000 TJ10s%,V  
    Mean               :        -0.000000 cq,SP&T~  
    Standard Deviation :         0.000000 wg9t)1k{e  
    vNyf64)  
    Monte Carlo Analysis: m]'#t)B_m  
    Number of trials: 20 7BE>RE=)  
    C'>|J9~Gz  
    Initial Statistics: Normal Distribution ;;!yC  
    GA$V0YQX  
      Trial       Criterion        Change OSRp0G20k\  
          1     0.42804416    -0.11598818 Y4J3-wK5  
    Change in Focus                :      -0.400171 h=W:^@G  
          2     0.54384387    -0.00018847 h1j!IG  
    Change in Focus                :       1.018470 ,1y@Z 5wy  
          3     0.44510003    -0.09893230 1auIR/=-  
    Change in Focus                :      -0.601922 W\>fh&!)  
          4     0.18154684    -0.36248550 Q)~aiI0  
    Change in Focus                :       0.920681 qLO4#CKCL6  
          5     0.28665820    -0.25737414 ]3D0R;  
    Change in Focus                :       1.253875 BGvre'67  
          6     0.21263372    -0.33139862 S(k3 `;K  
    Change in Focus                :      -0.903878 =rMUov h  
          7     0.40051424    -0.14351809 pd:WEI ,  
    Change in Focus                :      -1.354815 piJu+tUy  
          8     0.48754161    -0.05649072 r)Ma3FL0;  
    Change in Focus                :       0.215922 G0CW}e@)  
          9     0.40357468    -0.14045766 [u =+3b  
    Change in Focus                :       0.281783 8+~ >E  
         10     0.26315315    -0.28087919 6gL #C&  
    Change in Focus                :      -1.048393 zN[hkmh  
         11     0.26120585    -0.28282649 MR;1 2*p  
    Change in Focus                :       1.017611 DEBB()6,  
         12     0.24033815    -0.30369419 I&fozO   
    Change in Focus                :      -0.109292 OTvPUkp*  
         13     0.37164046    -0.17239188 )cX*I gO  
    Change in Focus                :      -0.692430 IQAZuN"<  
         14     0.48597489    -0.05805744 .8 2P(}h  
    Change in Focus                :      -0.662040 >f|||H}Snw  
         15     0.21462327    -0.32940907 034iK[ib"  
    Change in Focus                :       1.611296 ?1*cO:O  
         16     0.43378226    -0.11025008 ^-TE([bW  
    Change in Focus                :      -0.640081 r7RIRg_  
         17     0.39321881    -0.15081353 ;@0;pY  
    Change in Focus                :       0.914906 /}((l%UE.  
         18     0.20692530    -0.33710703 E:,/!9n  
    Change in Focus                :       0.801607 ?so=;gh  
         19     0.51374068    -0.03029165 4(#'_jS  
    Change in Focus                :       0.947293 kVuUjP6(c  
         20     0.38013374    -0.16389860 vt/x ,Y  
    Change in Focus                :       0.667010 v3*_9e  
    X@--m6-  
    Number of traceable Monte Carlo files generated: 20 t*=CZE-  
    ;"xfOzQ  
    Nominal     0.54403234 [ZNtCnv  
    Best        0.54384387    Trial     2 DRSr%d  
    Worst       0.18154684    Trial     4 O;+ maY^l  
    Mean        0.35770970 'S20\hwt-  
    Std Dev     0.11156454 t0( A4E  
    CLxynZ \;  
    1m'k|Ka  
    Compensator Statistics: a Fl;BhM  
    Change in back focus: L\37xJo  
    Minimum            :        -1.354815 '<gI8W</  
    Maximum            :         1.611296 1ufp qqk  
    Mean               :         0.161872 S%$ }(  
    Standard Deviation :         0.869664 loEPr5 bL  
    I~[F|d>  
    90% >       0.20977951               @CNi{. RX  
    80% >       0.22748071               -5)H<dAQZ  
    50% >       0.38667627               q?H|o(  
    20% >       0.46553746               S~<$H y*kh  
    10% >       0.50064115                $1SPy|y  
    |sa]F5  
    End of Run. .zr-:L5{  
    kc2 PoJ  
    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 _H9 MwJ  
    ~b(i&DVK  
    ru'F6?d  
    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 ?'IP4z;y  
    , |0}<%  
    不吝赐教
     
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    离线sansummer
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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?
    离线sansummer
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 .28<tEf  
    80% >       0.22748071                 evenq$ H  
    50% >       0.38667627                 f0!))/rSD  
    20% >       0.46553746                 P=qa::A  
    10% >       0.50064115 1v#%Ei$6`t  
    CMe 06^U   
    最后这个数值是MTF值呢,还是MTF的公差? ]{!U@b  
    .b_)%jd x  
    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???   MlcR"gl*  
    ?llXd4  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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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  : A]<y:^2])C  
    90% >       0.20977951                 t 4PK}>QW  
    80% >       0.22748071                 3e #p @sB  
    50% >       0.38667627                 +Um( h-;  
    20% >       0.46553746                 56}U8X  
    10% >       0.50064115 k;2GEa]w  
    ....... t,QyfN  
    X]'{(?Ch  
    lun#^J  
    这些数值都是MTF值
    离线天地大同
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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   wy yWyf  
    Mode                : Sensitivities 4F)-"ck  
    Sampling            : 2 hq%?=2'9?  
    Nominal Criterion   : 0.54403234 $Oq^jUJ  
    Test Wavelength     : 0.6328 uPhK3nCGo  
    vBRQp&YwX  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
    离线sansummer
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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? y6LWx:  
    !LggIk1  
    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?
    离线天地大同
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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
    离线sansummer
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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?
    离线天地大同
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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