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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 -Y6JU  
    }z[se)s  
    AWzpk }\  
    0IZV4{  
    然后添加了默认公差分析,基本没变 `^/Q"zH  
    q)/4i9  
    S/4k fsN  
    5BZ5Gl3  
    然后运行分析的结果如下: c=5$bo]LI  
    JQb]mU%?  
    Analysis of Tolerances \Z$*8z=  
    l[x wH 9'  
    File : E:\光学设计资料\zemax练习\f500.ZMX anbr3L[!  
    Title: q^s$4q  
    Date : TUE JUN 21 2011 _> *"6  
    L\UYt\ks  
    Units are Millimeters. lyyi?/W%  
    All changes are computed using linear differences. `?)i/jko"  
    O;w';}At  
    Paraxial Focus compensation only. l!b#v`  
    1~+w7Ar =(  
    WARNING: Solves should be removed prior to tolerancing. hE;  
    ]T$~a8  
    Mnemonics: *(rq AB0~  
    TFRN: Tolerance on curvature in fringes. #pZ3xa3R  
    TTHI: Tolerance on thickness. gP} M\3-O  
    TSDX: Tolerance on surface decentering in x. '&`Zy pq  
    TSDY: Tolerance on surface decentering in y. }*%%GPJ  
    TSTX: Tolerance on surface tilt in x (degrees). ^^v!..V]J  
    TSTY: Tolerance on surface tilt in y (degrees). bV"0}|A~K  
    TIRR: Tolerance on irregularity (fringes). gG}<l ':  
    TIND: Tolerance on Nd index of refraction. b@7 ItzD  
    TEDX: Tolerance on element decentering in x. ^71sIf;+  
    TEDY: Tolerance on element decentering in y. <v\|@@X  
    TETX: Tolerance on element tilt in x (degrees). "m!Cl-+u  
    TETY: Tolerance on element tilt in y (degrees). UZyo:*yB  
    *+ b[v7  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. A >e%rx  
    ]8RcZn  
    WARNING: Boundary constraints on compensators will be ignored. P^ a$?  
    Q$3%aR-2  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm `8L7pbS%,Q  
    Mode                : Sensitivities H]SnM'Y  
    Sampling            : 2 {9z EnVfg  
    Nominal Criterion   : 0.54403234 6 ,!]x>B  
    Test Wavelength     : 0.6328 :5ji.g* 0  
    N(D_*% 96  
    ~($h9* \  
    Fields: XY Symmetric Angle in degrees n04Zji(F@  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY /vBpRm  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 RJ0w3T]7  
    @6\8&(|  
    Sensitivity Analysis: c(o8uWn  
    *b> ~L  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| lO:[^l?F  
    Type                      Value      Criterion        Change          Value      Criterion        Change <@oK ^ja  
    Fringe tolerance on surface 1 5R qkAC  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 LNe- ]3wB  
    Change in Focus                :      -0.000000                            0.000000 ,9=a(j"  
    Fringe tolerance on surface 2 |S/nq_g]  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 "BK&C6]  
    Change in Focus                :       0.000000                            0.000000 }v`5  
    Fringe tolerance on surface 3  MgA6/k  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 7dAa~!/(  
    Change in Focus                :      -0.000000                            0.000000 ZMbv1*Vt  
    Thickness tolerance on surface 1 (}'0K?  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 pZXva9bE  
    Change in Focus                :       0.000000                            0.000000 cd\0  
    Thickness tolerance on surface 2 oM J5;  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 /']Gnt G.  
    Change in Focus                :       0.000000                           -0.000000  I"r*p?  
    Decenter X tolerance on surfaces 1 through 3 Tc{r}y[)  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 8USF;k  
    Change in Focus                :       0.000000                            0.000000 OD{Rh(Id  
    Decenter Y tolerance on surfaces 1 through 3 A!SHt7ysJ  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 >*EcX3  
    Change in Focus                :       0.000000                            0.000000 z[l17+v  
    Tilt X tolerance on surfaces 1 through 3 (degrees) o[_ {\  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 8hdd1lVKO8  
    Change in Focus                :       0.000000                            0.000000 w_6h $"^x  
    Tilt Y tolerance on surfaces 1 through 3 (degrees)  dY|(  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 jytfGE:  
    Change in Focus                :       0.000000                            0.000000 ^ *RmT  
    Decenter X tolerance on surface 1 CJ?Lv2Td  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 f~9ADb  
    Change in Focus                :       0.000000                            0.000000 {~VgXkjsC  
    Decenter Y tolerance on surface 1 #VtlXr>G  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 "QA!z\0\  
    Change in Focus                :       0.000000                            0.000000 AfyEFnY  
    Tilt X tolerance on surface (degrees) 1 ^,@Rd\q  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 7h,SX]4Q  
    Change in Focus                :       0.000000                            0.000000 a>6!?:Rj  
    Tilt Y tolerance on surface (degrees) 1 Jr|"`f%V  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 @ITJ}e4  
    Change in Focus                :       0.000000                            0.000000 5e6f)[}  
    Decenter X tolerance on surface 2 gM '_1zs U  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 >XM-xK-=  
    Change in Focus                :       0.000000                            0.000000 5F18/:\n  
    Decenter Y tolerance on surface 2 k& 2U&  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 c\065#f!  
    Change in Focus                :       0.000000                            0.000000 b[%sKl  
    Tilt X tolerance on surface (degrees) 2 @/g%l1$`  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 amK"Z<V F  
    Change in Focus                :       0.000000                            0.000000 $~75/  
    Tilt Y tolerance on surface (degrees) 2 nZ0- Kb  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 i]JD::P_H  
    Change in Focus                :       0.000000                            0.000000 Vr+X!DeY  
    Decenter X tolerance on surface 3 r8A   
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 nn5tOV}QE  
    Change in Focus                :       0.000000                            0.000000 D37N*9}  
    Decenter Y tolerance on surface 3 @2nar<  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 >,yE;zuw  
    Change in Focus                :       0.000000                            0.000000 4$oNh)+/h  
    Tilt X tolerance on surface (degrees) 3 S-NKT(H)c  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 5B< em  
    Change in Focus                :       0.000000                            0.000000 `A_CLVE  
    Tilt Y tolerance on surface (degrees) 3 Kc$j<MRtv  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 4V@raI-  
    Change in Focus                :       0.000000                            0.000000 d="Oge8  
    Irregularity of surface 1 in fringes -~n^?0  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 dDK4I3a  
    Change in Focus                :       0.000000                            0.000000 1RgtZp%  
    Irregularity of surface 2 in fringes ["TUSf]  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 l 8qCg/ew  
    Change in Focus                :       0.000000                            0.000000 d"`/P?n x  
    Irregularity of surface 3 in fringes ;x^WPY Ej  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 CoO..  
    Change in Focus                :       0.000000                            0.000000 A)/8j2  
    Index tolerance on surface 1 XHKiz2Pc1  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 K%h9'}pq>1  
    Change in Focus                :       0.000000                            0.000000 FrT.<3  
    Index tolerance on surface 2 '#LbIv4  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ZfsM($|a  
    Change in Focus                :       0.000000                           -0.000000 z~fZg6  
    #bc$[%_  
    Worst offenders: v'na{"  
    Type                      Value      Criterion        Change ,< Zu4bww  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 wFI2 (cQ  
    TSTY   2             0.20000000     0.35349910    -0.19053324 -5B>2K F  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 LS;j]!CU  
    TSTX   2             0.20000000     0.35349910    -0.19053324 -!V+>.Oh  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 Mm7;'Zbg  
    TSTY   1             0.20000000     0.42678383    -0.11724851 :59fb"^$  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 je LRS8];  
    TSTX   1             0.20000000     0.42678383    -0.11724851 &\6Buw_  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 }x!=F<Q!r  
    TSTY   3             0.20000000     0.42861670    -0.11541563 utOATjB.z  
    Bp&7:snGt  
    Estimated Performance Changes based upon Root-Sum-Square method: s2F<H#  
    Nominal MTF                 :     0.54403234 \vwsRT 1  
    Estimated change            :    -0.36299231 iXLODuI  
    Estimated MTF               :     0.18104003 l Oxz&m  
    m03D+@F  
    Compensator Statistics: Uao8#<CkvJ  
    Change in back focus: $.HZz  
    Minimum            :        -0.000000  rG[iEY  
    Maximum            :         0.000000 X% JQ_Z  
    Mean               :        -0.000000 \"k[y+O],4  
    Standard Deviation :         0.000000 9|BH/&$  
    ufl[sj%^|  
    Monte Carlo Analysis: (dvsGYT|.  
    Number of trials: 20 :DWvH,{+&  
    q~:H>;:G-  
    Initial Statistics: Normal Distribution w1 ;:B%!H  
    a9LK}xc={  
      Trial       Criterion        Change : ;l9to  
          1     0.42804416    -0.11598818 lB)%s~P:s  
    Change in Focus                :      -0.400171 =bKz$ _W  
          2     0.54384387    -0.00018847 &BOq%*+  
    Change in Focus                :       1.018470 2bv/ -^  
          3     0.44510003    -0.09893230 "R<c  
    Change in Focus                :      -0.601922 3bK.8  
          4     0.18154684    -0.36248550 bqPaXH n  
    Change in Focus                :       0.920681 ,i]X^z5!  
          5     0.28665820    -0.25737414 Y9<N#h#  
    Change in Focus                :       1.253875 <b.O^_zQF  
          6     0.21263372    -0.33139862 ~?6M4!u   
    Change in Focus                :      -0.903878 ;r8< Ed  
          7     0.40051424    -0.14351809 xxy (#j$  
    Change in Focus                :      -1.354815 P55QE+B  
          8     0.48754161    -0.05649072 S[zETRSG  
    Change in Focus                :       0.215922 DjLSl,Z  
          9     0.40357468    -0.14045766 )70i/%}7  
    Change in Focus                :       0.281783 LC>bZ!(i#  
         10     0.26315315    -0.28087919 %>io$o  
    Change in Focus                :      -1.048393 !&(^R<-id  
         11     0.26120585    -0.28282649 @"h @4q/W  
    Change in Focus                :       1.017611 I@/s&$H`l  
         12     0.24033815    -0.30369419 gI T3A*x  
    Change in Focus                :      -0.109292 3*(w=;y  
         13     0.37164046    -0.17239188 XfZ^,' z  
    Change in Focus                :      -0.692430 OK] _.v}  
         14     0.48597489    -0.05805744 3a Y^6&  
    Change in Focus                :      -0.662040 #jqcUno  
         15     0.21462327    -0.32940907 8el\M/u{  
    Change in Focus                :       1.611296 HuI?kLfj\  
         16     0.43378226    -0.11025008 1Zo"Xb  
    Change in Focus                :      -0.640081 0PP5qeqN2n  
         17     0.39321881    -0.15081353 F[@M?  
    Change in Focus                :       0.914906 D$?}M>  
         18     0.20692530    -0.33710703 DS| HN  
    Change in Focus                :       0.801607 vk><S|[n  
         19     0.51374068    -0.03029165 dy' J~Eo7  
    Change in Focus                :       0.947293 >OxSrc@A  
         20     0.38013374    -0.16389860 w}rsboU  
    Change in Focus                :       0.667010 xg.o7-^M  
    ']&rPv kL  
    Number of traceable Monte Carlo files generated: 20 x=I|O;"><  
    Spm0DqqR?  
    Nominal     0.54403234 360b`zS  
    Best        0.54384387    Trial     2 +tCNJ<S@l$  
    Worst       0.18154684    Trial     4 y_:~  
    Mean        0.35770970 o4t6NDa  
    Std Dev     0.11156454 ix+sT|>  
    V44M=c7E  
    #d*)W3e2{  
    Compensator Statistics: /idrb c  
    Change in back focus: !Y,*Zc$R  
    Minimum            :        -1.354815 `JAM]qB"  
    Maximum            :         1.611296 !;, Dlq-}  
    Mean               :         0.161872 PdD,~N#  
    Standard Deviation :         0.869664 =}K"@5J  
    Dt~ |)L+  
    90% >       0.20977951               AuIg=-xR  
    80% >       0.22748071               (:r80:  
    50% >       0.38667627               )|N_Q}  
    20% >       0.46553746               _I/uW|>  
    10% >       0.50064115                Z=.$mFE\  
    H"vkp~u]I  
    End of Run. |r<#>~*  
    -d)+G%{  
    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 [))TL  
    Oe)B.{;Ph  
    6 k+4R<  
    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 _Squ%z:D  
    IBm"VCg{Ew  
    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?
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 L0X/  
    80% >       0.22748071                 @8eQ|.q]Q  
    50% >       0.38667627                 @(W{_mw  
    20% >       0.46553746                 AlA:MO]NM  
    10% >       0.50064115 +)ba9bJ|  
    rsn^Y C  
    最后这个数值是MTF值呢,还是MTF的公差? 7CDp$7v2  
    QWI)Y:<K/  
    也就是说,这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951???   -*[:3%  
    brEA-xNWQ  
    怎么没人啊,大家讨论讨论吗
    离线sansummer
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊???
    离线天地大同
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : Bo$dIn2_  
    90% >       0.20977951                 tb4^+&.GS  
    80% >       0.22748071                 8Si3 aq3  
    50% >       0.38667627                 ;0lY_ii  
    20% >       0.46553746                 20# V?hX3  
    10% >       0.50064115 !/e*v>3u&  
    ....... ;I?x; lH  
    Xe&p.v  
    *-*SCA`E^=  
    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   p-r[M5;-^Q  
    Mode                : Sensitivities [{`2FR:Cd  
    Sampling            : 2 2;(+]Ad<  
    Nominal Criterion   : 0.54403234 bz}-[W+  
    Test Wavelength     : 0.6328 I1 Otu~%d  
    bjo} 95  
    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? Z&79: 9=#>  
    : _tt9J  
    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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    恩,多多尝试