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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 |'}r-}  
    Ug#B( }/  
    ae0Mf0<#)  
    NP\/9 8|1  
    然后添加了默认公差分析，基本没变 /&=y_%VR  
    bB/fU7<{)u  
    ;x|? N*  
    6ypHH 2X  
    然后运行分析的结果如下： ;&w_.j*Is  
    %dd B$(  
    Analysis of Tolerances _jCu=l_  
    #8vl2qWbi  
    File : E:\光学设计资料\zemax练习\f500.ZMX |gk"~D  
    Title: {vd +cE  
    Date : TUE JUN 21 2011 j}}as  
    MnY}U",   
    Units are Millimeters. Y,4?>:39J  
    All changes are computed using linear differences. /sB,)> X  
    Y)S f;  
    Paraxial Focus compensation only. ?$\sMkn  
    ;;^?vS  
    WARNING: Solves should be removed prior to tolerancing. ygV-Fv>PQ  
    "5sUE!)f  
    Mnemonics: N4yQ,tG>aa  
    TFRN: Tolerance on curvature in fringes. |M?VmG/6  
    TTHI: Tolerance on thickness. apxq] ! `  
    TSDX: Tolerance on surface decentering in x. 5NK yF  
    TSDY: Tolerance on surface decentering in y. k^UrFl  
    TSTX: Tolerance on surface tilt in x (degrees). *$t=Lh  
    TSTY: Tolerance on surface tilt in y (degrees). sU^K5oo  
    TIRR: Tolerance on irregularity (fringes). a\ MJh+K  
    TIND: Tolerance on Nd index of refraction. CfOhk  
    TEDX: Tolerance on element decentering in x. ~fpk`&nhe  
    TEDY: Tolerance on element decentering in y. WH+S d  
    TETX: Tolerance on element tilt in x (degrees). (iO/@iw  
    TETY: Tolerance on element tilt in y (degrees). gHvkr?Cg  
    {4R;C~E8  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 2F,?}jJ.K  
    G@dw5EfF9  
    WARNING: Boundary constraints on compensators will be ignored. &:C(,`~  
    t/x]vCP,2D  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 7c'OIY].,  
    Mode                : Sensitivities ~05(92bK  
    Sampling            : 2 }"^d<dvuz  
    Nominal Criterion   : 0.54403234 mL s>RR#b  
    Test Wavelength     : 0.6328 1[?xf4EMG  
    nhq,Y0YH  
    F n*+uk  
    Fields: XY Symmetric Angle in degrees @7Nc*-SM  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY !V0)eC50  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 c#[d7t8ONe  
    <3{ >;^|e  
    Sensitivity Analysis: VsRdZ4  
    _ba.oIc  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| XXW.Uios  
    Type                      Value      Criterion        Change          Value      Criterion        Change Bp=BRl  
    Fringe tolerance on surface 1 sGbk4g  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 BMbZ34^e  
    Change in Focus                :      -0.000000                            0.000000 <;E>1*K}8  
    Fringe tolerance on surface 2  {0} Q5  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Z9I ?j1K|!  
    Change in Focus                :       0.000000                            0.000000 /5 R?(-  
    Fringe tolerance on surface 3 ^;mGOjS  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 p@=B\A]  
    Change in Focus                :      -0.000000                            0.000000 5AAPtZ\lH  
    Thickness tolerance on surface 1 ")GrQv a  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 V34]5  
    Change in Focus                :       0.000000                            0.000000 Gc:oS vm  
    Thickness tolerance on surface 2 m-|~tve  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 n0@\x=9  
    Change in Focus                :       0.000000                           -0.000000 ^: V6=  
    Decenter X tolerance on surfaces 1 through 3 [/eRc  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 7|7sA'1 cM  
    Change in Focus                :       0.000000                            0.000000 JI~@H /j  
    Decenter Y tolerance on surfaces 1 through 3 - z"D_5  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 2Rs-!G< ]  
    Change in Focus                :       0.000000                            0.000000 (L8z<id<z  
    Tilt X tolerance on surfaces 1 through 3 (degrees) [yfi:|n1  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 $x1PU67  
    Change in Focus                :       0.000000                            0.000000 R`emI7|  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) -]vPF|  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 { BDUl3T  
    Change in Focus                :       0.000000                            0.000000 `n`aA)|<  
    Decenter X tolerance on surface 1 4>8'.8S   
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 -MH~1Tw6Z  
    Change in Focus                :       0.000000                            0.000000 0 8 aZU  
    Decenter Y tolerance on surface 1 T! fF1cpF\  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 NYN(2J  
    Change in Focus                :       0.000000                            0.000000 d"4J)+q  
    Tilt X tolerance on surface (degrees) 1 j.y8H  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 79Si^n1\  
    Change in Focus                :       0.000000                            0.000000 D|R,$ v:  
    Tilt Y tolerance on surface (degrees) 1 p7Q %)5o  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 9"mcN3x:\e  
    Change in Focus                :       0.000000                            0.000000 roG f &  
    Decenter X tolerance on surface 2 0hx EI  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 <gc\ ,P<ru  
    Change in Focus                :       0.000000                            0.000000 sa>}wz<o  
    Decenter Y tolerance on surface 2 ZU-vZD>  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 h"+|)'*n  
    Change in Focus                :       0.000000                            0.000000 VWR6/,N^_  
    Tilt X tolerance on surface (degrees) 2 /tGj`C&qtw  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 s+yX82Y  
    Change in Focus                :       0.000000                            0.000000 QO%#.s  
    Tilt Y tolerance on surface (degrees) 2 (#;<iu}  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 00)=3@D  
    Change in Focus                :       0.000000                            0.000000 cu V}<3&  
    Decenter X tolerance on surface 3 ZI'Mr:z4  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Y^W.gGM  
    Change in Focus                :       0.000000                            0.000000 ~%o?J"y  
    Decenter Y tolerance on surface 3 MX{p)(HW  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 c'r7sI%Yi  
    Change in Focus                :       0.000000                            0.000000 (VzabO  
    Tilt X tolerance on surface (degrees) 3 Kn<z<>vO  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ;\Vi~2!8  
    Change in Focus                :       0.000000                            0.000000 KD5}Nk)t  
    Tilt Y tolerance on surface (degrees) 3 l^ aUN  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 H6PS7g"  
    Change in Focus                :       0.000000                            0.000000 j4G?=oDb  
    Irregularity of surface 1 in fringes /*8Ms`  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 w;p!~o &  
    Change in Focus                :       0.000000                            0.000000 m!-,K8  
    Irregularity of surface 2 in fringes s&7,gWy}BE  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 7VQk$im399  
    Change in Focus                :       0.000000                            0.000000 ;0f?-W?1  
    Irregularity of surface 3 in fringes gM<*(=x'  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 +u:Q+PkM  
    Change in Focus                :       0.000000                            0.000000 ,3`RM $  
    Index tolerance on surface 1 Tv{X$`%  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ` E2@GX+,  
    Change in Focus                :       0.000000                            0.000000 tzeS D C  
    Index tolerance on surface 2 g :me:M  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 qs]7S^yw  
    Change in Focus                :       0.000000                           -0.000000 mnM!^[|z  
    .v3~2r*&  
    Worst offenders: P|Ojt I  
    Type                      Value      Criterion        Change AW+ q#Is  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 s2-p -n  
    TSTY   2             0.20000000     0.35349910    -0.19053324 M)oy3y^&  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 G=lket6  
    TSTX   2             0.20000000     0.35349910    -0.19053324 noBGP/Av=:  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 T53|*~u  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ~#b&UR  
    TSTX   1            -0.20000000     0.42678383    -0.11724851  {u}Lhv  
    TSTX   1             0.20000000     0.42678383    -0.11724851 mqg[2VTRP  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 2vit{  
    TSTY   3             0.20000000     0.42861670    -0.11541563 k2xOu9ncEj  
    /k(KA [bS  
    Estimated Performance Changes based upon Root-Sum-Square method: x]gf3Tc58  
    Nominal MTF                 :     0.54403234 l 6;}nG  
    Estimated change            :    -0.36299231 }!-K)j.  
    Estimated MTF               :     0.18104003 [CU]fU{$  
    + W ? / A]  
    Compensator Statistics: av&4:O!  
    Change in back focus: "@JSF  
    Minimum            :        -0.000000 X=<-rFW  
    Maximum            :         0.000000 $~V,.RD  
    Mean               :        -0.000000 gt9{u"o  
    Standard Deviation :         0.000000 i$Q$y hT{  
    P-?ya!@"  
    Monte Carlo Analysis: 52$7vYMto  
    Number of trials: 20 +a%Vp!y  
    qd9CKd  
    Initial Statistics: Normal Distribution fJ3*'(  
     ;Q;u^T`  
      Trial       Criterion        Change /\S1p3EW*  
          1     0.42804416    -0.11598818 'L w4jq  
    Change in Focus                :      -0.400171 +@Oo)#V|.  
          2     0.54384387    -0.00018847 Kzw )Q  
    Change in Focus                :       1.018470 0{/P1  
          3     0.44510003    -0.09893230 l;I)$=={=  
    Change in Focus                :      -0.601922 U`D.cEMfH  
          4     0.18154684    -0.36248550 2\xv Yf-  
    Change in Focus                :       0.920681 +6=2B0$ r  
          5     0.28665820    -0.25737414 5Mfs)a4j.  
    Change in Focus                :       1.253875 ,haCZH {  
          6     0.21263372    -0.33139862 ?G[<~J3-E  
    Change in Focus                :      -0.903878 gxX0$\8o7  
          7     0.40051424    -0.14351809 @Fp-6J  
    Change in Focus                :      -1.354815 Mt@P}4   
          8     0.48754161    -0.05649072 u; xl}  
    Change in Focus                :       0.215922 Kp +Lk  
          9     0.40357468    -0.14045766 (GVH#}uB  
    Change in Focus                :       0.281783 .:KZ8'g3}  
         10     0.26315315    -0.28087919 edh?I1/  
    Change in Focus                :      -1.048393 x<'(b7{U0  
         11     0.26120585    -0.28282649 :wJ=t/ho  
    Change in Focus                :       1.017611 { jnQoxN  
         12     0.24033815    -0.30369419 D{&0r.2F  
    Change in Focus                :      -0.109292 fI2/v<[  
         13     0.37164046    -0.17239188 5 } 9}4e  
    Change in Focus                :      -0.692430 '2u(fLq3h  
         14     0.48597489    -0.05805744 bqwQi>^Cw  
    Change in Focus                :      -0.662040 J`T1 88  
         15     0.21462327    -0.32940907 c5K@<=?,E  
    Change in Focus                :       1.611296 } PD]e*z{Z  
         16     0.43378226    -0.11025008 WKf->W  
    Change in Focus                :      -0.640081 7q&//*%yF  
         17     0.39321881    -0.15081353 nR7 usL  
    Change in Focus                :       0.914906 P=:mn>  
         18     0.20692530    -0.33710703 x/NR_~Rnk  
    Change in Focus                :       0.801607 yJx{6  
         19     0.51374068    -0.03029165 i2ap]  
    Change in Focus                :       0.947293 pu(a&0  
         20     0.38013374    -0.16389860 ({#9gTP2b  
    Change in Focus                :       0.667010 6N}>@Y5  
    ~+1t3M e  
    Number of traceable Monte Carlo files generated: 20 *xEcX6ZHX  
    6&p I{  
    Nominal     0.54403234 olNgtSX  
    Best        0.54384387    Trial     2 uqy b  
    Worst       0.18154684    Trial     4 %RE-_~GF  
    Mean        0.35770970 |s&jWM$  
    Std Dev     0.11156454 wN[mU  
    >E;-asD  
    |wASeZMO2  
    Compensator Statistics: \Kph?l9Ww  
    Change in back focus: ~n:dHK`  
    Minimum            :        -1.354815 s)#8>s-  
    Maximum            :         1.611296 GY@-}p~it  
    Mean               :         0.161872 4\)"Ih  
    Standard Deviation :         0.869664 adG=L9 "n  
    _jV(Gv'  
    90% >       0.20977951               fk%yi[  
    80% >       0.22748071               hlPZTr=a  
    50% >       0.38667627               ].f28bY  
    20% >       0.46553746               ~7$E\w6  
    10% >       0.50064115                pyEi@L1p  
    2ZMYA=[!  
    End of Run. Oj<.3U[C  
    Cx$M  
    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 +{V"a<D$m  
    k r0PL)$  
    %vjLw`  
    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 6iwIEb  
    !xs. [&u8  
    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                 M17oAVN7D  
    80% >       0.22748071                 4`F(RweGx  
    50% >       0.38667627                 R<VNbm;  
    20% >       0.46553746                 `}:q@: %  
    10% >       0.50064115 Jx ;" @  
    v.,|#}0 o  
    最后这个数值是MTF值呢，还是MTF的公差？ qms+s~oA  
    QFOmnbJg  
    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？？？    6e,|HV  
    :34#z.O  
    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  :  pME17 af  
    90% >       0.20977951                 y]|Hrx  
    80% >       0.22748071                 ""cnZZ5)  
    50% >       0.38667627                 shjc`Tqm  
    20% >       0.46553746                 ^):m^w.  
    10% >       0.50064115 `.3!  
    ....... qEvHrsw},  
    r0ml|PX  
    , 'WhF-  
    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   RTN?[`  
    Mode                : Sensitivities 0V*B3V<  
    Sampling            : 2 zrt\] h+  
    Nominal Criterion   : 0.54403234 E'3=qTbiD  
    Test Wavelength     : 0.6328 /Y=Cg%+  
    wf47Ulx  
    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？ JbT+w \o  
    sVdn>$KXk  
    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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