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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 d&#~ h:~  
    ={hX}"*D  
    n]dL?BJ  
    p _d:eZ  
    然后添加了默认公差分析，基本没变 4e;QiTj  
    .'a&3 3J  
    G<M:Ak+~  
    nk3y"ne7  
    然后运行分析的结果如下： nNXgW  
    <, 3ROo76  
    Analysis of Tolerances $cu00K  
    y*MF&mQ[  
    File : E:\光学设计资料\zemax练习\f500.ZMX 7mm1P9Z  
    Title: .k[o$z\EkF  
    Date : TUE JUN 21 2011 uytE^  
    GElvz'S~  
    Units are Millimeters. @AYRiOodi  
    All changes are computed using linear differences. I5h[%T  
    @]bPVG?d  
    Paraxial Focus compensation only. $H$j-)\D  
    hVUP4 A  
    WARNING: Solves should be removed prior to tolerancing. L4L2O7  
    U.{l;EL:T  
    Mnemonics: tTU=+*Io  
    TFRN: Tolerance on curvature in fringes. e6_ZjrQf  
    TTHI: Tolerance on thickness. ^T~gEv  
    TSDX: Tolerance on surface decentering in x. FYS/##r  
    TSDY: Tolerance on surface decentering in y. -R>}u'EG>  
    TSTX: Tolerance on surface tilt in x (degrees). 81*M= ?  
    TSTY: Tolerance on surface tilt in y (degrees). }h 3K@R   
    TIRR: Tolerance on irregularity (fringes). s}j1"@  
    TIND: Tolerance on Nd index of refraction. ud fe  
    TEDX: Tolerance on element decentering in x. fm~kM J  
    TEDY: Tolerance on element decentering in y. |j3'eW&=  
    TETX: Tolerance on element tilt in x (degrees). X,8<oX1r  
    TETY: Tolerance on element tilt in y (degrees). _ pO`  
    Dup;e&9g  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 4d:{HLX,  
    ,#W  
    WARNING: Boundary constraints on compensators will be ignored. l^J75$7  
    Ap{}^  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm .WQ<jZt>  
    Mode                : Sensitivities %<8nF5  
    Sampling            : 2  'Pvm8t  
    Nominal Criterion   : 0.54403234 #"fJa:IYG7  
    Test Wavelength     : 0.6328 E2L(wt}^  
    VOsqJJ3  
    {A|TowBN  
    Fields: XY Symmetric Angle in degrees y$81Z q  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Hqh6:RuL  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 +jC*'7p@  
    sS TPMh  
    Sensitivity Analysis: 8vk..!7n}  
    ~7!7\i,Y8\  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| yk2!8  
    Type                      Value      Criterion        Change          Value      Criterion        Change W(fr<<hL  
    Fringe tolerance on surface 1 27ckdyQx  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 KNgH|5Pb  
    Change in Focus                :      -0.000000                            0.000000 |_u8mV  
    Fringe tolerance on surface 2 fQ>4MKLw=d  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 hl&-\dc+  
    Change in Focus                :       0.000000                            0.000000 }Vu\(~  
    Fringe tolerance on surface 3 -oz`"&%  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 9]$8MY   
    Change in Focus                :      -0.000000                            0.000000 ')S;[=v  
    Thickness tolerance on surface 1 6{d6s#|%  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 TaJB4zB  
    Change in Focus                :       0.000000                            0.000000 <b+[<@wS  
    Thickness tolerance on surface 2 Q-rL$%~='  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 W&:[r/8wA  
    Change in Focus                :       0.000000                           -0.000000 +a= 0\lpOy  
    Decenter X tolerance on surfaces 1 through 3 y'ja< 1I>  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 *p ? e.%nd  
    Change in Focus                :       0.000000                            0.000000 Q Z8QQ`*S  
    Decenter Y tolerance on surfaces 1 through 3 f]~c)P Cs  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 h!&sNzX  
    Change in Focus                :       0.000000                            0.000000 ?(KvQK|d4  
    Tilt X tolerance on surfaces 1 through 3 (degrees) O\;=V`z-  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 P];JKE%  
    Change in Focus                :       0.000000                            0.000000 "fQRk  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 2=PBxDs;  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 NCA {H^CL  
    Change in Focus                :       0.000000                            0.000000 i`%.  
    Decenter X tolerance on surface 1 !Q-wdzsp?  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 $mco0 %$  
    Change in Focus                :       0.000000                            0.000000 t0PQ~|H<KV  
    Decenter Y tolerance on surface 1 sc`"P-J+vp  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 9CUimZ  
    Change in Focus                :       0.000000                            0.000000 %IpSK 0<Sp  
    Tilt X tolerance on surface (degrees) 1 _J?SIm  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Wf02$c0#K  
    Change in Focus                :       0.000000                            0.000000 {g/wY%u=  
    Tilt Y tolerance on surface (degrees) 1 v@ONo?)  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 X7aXxPCq1  
    Change in Focus                :       0.000000                            0.000000 (0*v*kYdL+  
    Decenter X tolerance on surface 2 #G _/.h@  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 L9IGK<  
    Change in Focus                :       0.000000                            0.000000 CKARg8o  
    Decenter Y tolerance on surface 2 ` DCU>bt&R  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 _=`x])mM  
    Change in Focus                :       0.000000                            0.000000 Wb=Jj 9;  
    Tilt X tolerance on surface (degrees) 2 9rj('F & 1  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 5S/>l_od$2  
    Change in Focus                :       0.000000                            0.000000 R$b,h  
    Tilt Y tolerance on surface (degrees) 2 |uha 38~  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Md(JIlh3  
    Change in Focus                :       0.000000                            0.000000 2tr :xi@  
    Decenter X tolerance on surface 3 J6|JWp  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ^E@@YV  
    Change in Focus                :       0.000000                            0.000000 {*=E?oF@  
    Decenter Y tolerance on surface 3 *8!w&ME+.  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 nlfPg-78B+  
    Change in Focus                :       0.000000                            0.000000 nTZ> |R)  
    Tilt X tolerance on surface (degrees) 3 OAok  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 F/<qE!(  
    Change in Focus                :       0.000000                            0.000000 HCc`  
    Tilt Y tolerance on surface (degrees) 3 ]t/f<jKN^  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 _'JRo%{xGX  
    Change in Focus                :       0.000000                            0.000000 ?iln<% G  
    Irregularity of surface 1 in fringes )1_(>|@oi  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 )Xno|$b5Eo  
    Change in Focus                :       0.000000                            0.000000 k}B DA|\s  
    Irregularity of surface 2 in fringes Kfjryo9  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 gB+ G'I  
    Change in Focus                :       0.000000                            0.000000 ^g]xU1] *  
    Irregularity of surface 3 in fringes ]18Ucf  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 "-U3=+  
    Change in Focus                :       0.000000                            0.000000 1l]C5P}E  
    Index tolerance on surface 1  4Iq5+Q  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 F!R2_89iy  
    Change in Focus                :       0.000000                            0.000000 `cO|RhD @  
    Index tolerance on surface 2 G;2[  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 /| f[us-w  
    Change in Focus                :       0.000000                           -0.000000 ;Vo mFp L  
    \1{_lynD  
    Worst offenders: 7sguGwg)_  
    Type                      Value      Criterion        Change 86{ZFtv  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 96)v#B?p  
    TSTY   2             0.20000000     0.35349910    -0.19053324 /#IH -2N  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 <{ # <5 8  
    TSTX   2             0.20000000     0.35349910    -0.19053324 &NP6%}bR`  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 t[q3 {-  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ?1$\pq^  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 &z QWIv  
    TSTX   1             0.20000000     0.42678383    -0.11724851 Cn/q=  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 * 2%oZX F  
    TSTY   3             0.20000000     0.42861670    -0.11541563 /'"R Mq  
    |DGCdB|`G  
    Estimated Performance Changes based upon Root-Sum-Square method: lR[z<2w\  
    Nominal MTF                 :     0.54403234 [[$Mh_MD  
    Estimated change            :    -0.36299231 K]MzP|T,  
    Estimated MTF               :     0.18104003 I2W{t l  
    O E]~@eU  
    Compensator Statistics: 8ur_/h7  
    Change in back focus: 5Ny0b|+p  
    Minimum            :        -0.000000 WSSaZ9 =  
    Maximum            :         0.000000 Ul9b.`6  
    Mean               :        -0.000000 I'P.K| "R  
    Standard Deviation :         0.000000 E~qK&7+  
    wV?[3bEhM  
    Monte Carlo Analysis: wb@]>MJ}[s  
    Number of trials: 20 " _mmR M  
    8@Q"YA 3d+  
    Initial Statistics: Normal Distribution ?SB5b,  
    U <|B7t4M  
      Trial       Criterion        Change )y5iH){ !  
          1     0.42804416    -0.11598818 a3*.,%d  
    Change in Focus                :      -0.400171 })q]g Mj  
          2     0.54384387    -0.00018847 S [ i$e  
    Change in Focus                :       1.018470 40rZ~!}  
          3     0.44510003    -0.09893230 !(}OBZ[*  
    Change in Focus                :      -0.601922 /^NJ)9IB  
          4     0.18154684    -0.36248550 BR%{bY^ 5p  
    Change in Focus                :       0.920681 *:k~g].Iz  
          5     0.28665820    -0.25737414 ;Kt'Sit  
    Change in Focus                :       1.253875 ^9n}-Cqeq  
          6     0.21263372    -0.33139862 N" 8*FiZ|  
    Change in Focus                :      -0.903878 3@%BA(M  
          7     0.40051424    -0.14351809 1mAUEQ!  
    Change in Focus                :      -1.354815 uT#Acg  
          8     0.48754161    -0.05649072 T<! \B]  
    Change in Focus                :       0.215922 3KB| NS  
          9     0.40357468    -0.14045766 7cy+Nz  
    Change in Focus                :       0.281783 6oPUYn-  
         10     0.26315315    -0.28087919 8Ix -i  
    Change in Focus                :      -1.048393 `" i^'VL,  
         11     0.26120585    -0.28282649 uv?8V@x2  
    Change in Focus                :       1.017611  >cC Gx  
         12     0.24033815    -0.30369419 AEiWL.*.  
    Change in Focus                :      -0.109292 -9hp+0 <  
         13     0.37164046    -0.17239188 7uWJ6Wk  
    Change in Focus                :      -0.692430 " 6 uTo0  
         14     0.48597489    -0.05805744 z7D*z8,i  
    Change in Focus                :      -0.662040 L{4),65  
         15     0.21462327    -0.32940907 qiF@7i  
    Change in Focus                :       1.611296 aUsul'e;M  
         16     0.43378226    -0.11025008 z_5rAlnwT.  
    Change in Focus                :      -0.640081 |_xZ/DT  
         17     0.39321881    -0.15081353 BYhmJC|  
    Change in Focus                :       0.914906 N` @W%  
         18     0.20692530    -0.33710703 Uqb]e?@  
    Change in Focus                :       0.801607 S,ouj;B  
         19     0.51374068    -0.03029165 9;;]q?*  
    Change in Focus                :       0.947293 ]<&B BQ  
         20     0.38013374    -0.16389860 cij]&$;Q  
    Change in Focus                :       0.667010 N>W;0u!  
    #`fi2K&]j  
    Number of traceable Monte Carlo files generated: 20 `8$:F4%P  
    -N /8Ho  
    Nominal     0.54403234 GqmDDL1  
    Best        0.54384387    Trial     2 bUY:XmA  
    Worst       0.18154684    Trial     4 {ziYd;Ys1  
    Mean        0.35770970 "u3fs2  
    Std Dev     0.11156454 ^?sSsH z  
    MbT ONt?~v  
    0{^l2?mgSb  
    Compensator Statistics: Q{ |+ 3!!'  
    Change in back focus: 9XJ9~I?  
    Minimum            :        -1.354815 ,u8ZS|9  
    Maximum            :         1.611296 t(uB66(_F  
    Mean               :         0.161872 >uP{9kDm  
    Standard Deviation :         0.869664 !.tL"U~4  
    [FeJ8P>z  
    90% >       0.20977951               gavQb3EP  
    80% >       0.22748071               EA%#/n  
    50% >       0.38667627               ^6N3 nkyZ  
    20% >       0.46553746               &kr_CP:;  
    10% >       0.50064115                ^>vO5Ho.  
    flm,r<*}  
    End of Run. ^Yf)lV&[  
    fmZzBZ_  
    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 {=pP`HD0  
    n41\y:CAo  
    YDZ1@N}^B  
    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 CwH)6uA  
    fd,}YAiX  
    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                 ?D$b%G{  
    80% >       0.22748071                 5\*wX.wp  
    50% >       0.38667627                 |@bNd7=2d  
    20% >       0.46553746                 RxDxLU2kt  
    10% >       0.50064115 ^>R|R1&  
    .1?i'8TF  
    最后这个数值是MTF值呢，还是MTF的公差？ kk\zZC <  
    TAXkfj  
    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？？？   (9[C0eS  
    $E@.G1T [  
    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  : 9rc n*sm  
    90% >       0.20977951                 QRa6*AYm  
    80% >       0.22748071                 N>\?Aeh  
    50% >       0.38667627                 w:(7fu=  
    20% >       0.46553746                 8ngf(#_{_n  
    10% >       0.50064115 4?uG> ;V  
    ....... [`dipLkr  
    '0rwNEg  
    hvZR4|k>  
    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   ywte \}  
    Mode                : Sensitivities S45_-aE  
    Sampling            : 2 L,L7WObA  
    Nominal Criterion   : 0.54403234 X:/t>0e  
    Test Wavelength     : 0.6328 KR0 x[#.*  
    L\DaZ(Y  
    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？ gG>>ynn  
    RUKSGj_NJ  
    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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