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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 FMY r6/I  
    B;4hI?  
    o;FjpZ  
    #[sC H  
    然后添加了默认公差分析,基本没变 V'c9DoSRI\  
    ;1S{xd*^N  
    3Zsqx =w  
    RUf,)]Vvk  
    然后运行分析的结果如下: \|R`wFn^P  
    ]=9%fA  
    Analysis of Tolerances @SPmb o  
    W#e:rz8=  
    File : E:\光学设计资料\zemax练习\f500.ZMX 6`NsX  
    Title: BdUhFN*  
    Date : TUE JUN 21 2011 ig; ~ T  
    R.A}tV=j#  
    Units are Millimeters. 0'^? m$  
    All changes are computed using linear differences. 9^0 'VRG  
    .)|jBC8|}  
    Paraxial Focus compensation only. *bn9j>|iv  
    h1fJ`WT6,  
    WARNING: Solves should be removed prior to tolerancing. %'\D _W&  
    |:!#k A  
    Mnemonics: \#tr4g~u  
    TFRN: Tolerance on curvature in fringes. #Vul#JHW  
    TTHI: Tolerance on thickness. :L:;~tK  
    TSDX: Tolerance on surface decentering in x. 1>a^Q  
    TSDY: Tolerance on surface decentering in y. Uvf-h4^J]:  
    TSTX: Tolerance on surface tilt in x (degrees). C'n 9n!hR  
    TSTY: Tolerance on surface tilt in y (degrees). 3I:DL#f  
    TIRR: Tolerance on irregularity (fringes). TW3:Y\p  
    TIND: Tolerance on Nd index of refraction. <n }=zu  
    TEDX: Tolerance on element decentering in x. n$`Nx\v  
    TEDY: Tolerance on element decentering in y. HLYM(Pz  
    TETX: Tolerance on element tilt in x (degrees). \Zoo9Wy  
    TETY: Tolerance on element tilt in y (degrees). NXeo&+F  
    SKLQAE5  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ZI}m~7  
    5`x9+XvoN  
    WARNING: Boundary constraints on compensators will be ignored. iCAd7=o  
    b@1QE  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm dUb(C1h  
    Mode                : Sensitivities 6ap,XFRMh  
    Sampling            : 2 Z|8f7@k{|+  
    Nominal Criterion   : 0.54403234 \vQ_:-A  
    Test Wavelength     : 0.6328 lS?f?n^  
    = 1}-]ctVn  
    /f%u_ 8pV%  
    Fields: XY Symmetric Angle in degrees `R:<(:  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY W:rzfO.`Z  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 NPB':r-8  
    zztW7MG2lQ  
    Sensitivity Analysis: "a,Tc2xk  
    SI;G|uO;/  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| lq.0?(  
    Type                      Value      Criterion        Change          Value      Criterion        Change +\:I3nKs%  
    Fringe tolerance on surface 1 G)<k5U4  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 tD4IwX  
    Change in Focus                :      -0.000000                            0.000000 ,\=u(Y\I[  
    Fringe tolerance on surface 2 }FM<uBKW  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 H>DJ-lG(  
    Change in Focus                :       0.000000                            0.000000 u'32nf?  
    Fringe tolerance on surface 3 nosEo? {  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 'Y vW|Iq  
    Change in Focus                :      -0.000000                            0.000000 }U^9(  
    Thickness tolerance on surface 1 ;U7\pc;S  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 k*!J,/=k  
    Change in Focus                :       0.000000                            0.000000 B;K{Vo:C  
    Thickness tolerance on surface 2 'HqAm$V+  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 1H[lf B  
    Change in Focus                :       0.000000                           -0.000000 er qm=)  
    Decenter X tolerance on surfaces 1 through 3 Nc"h8p?  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 eM9~&{m.  
    Change in Focus                :       0.000000                            0.000000 yS3x))  
    Decenter Y tolerance on surfaces 1 through 3 h M8G"b  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 1:>RQPXcWv  
    Change in Focus                :       0.000000                            0.000000 O'wN4qb=F  
    Tilt X tolerance on surfaces 1 through 3 (degrees) e<C5}#wt  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 (c} 0Sg  
    Change in Focus                :       0.000000                            0.000000 8F[j}.8q  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) hD$U8~zK  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 T8KhmO  
    Change in Focus                :       0.000000                            0.000000 h h8UKEM-  
    Decenter X tolerance on surface 1 p}Gk|Kjlq,  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 hCo&SRC/5  
    Change in Focus                :       0.000000                            0.000000 -d[x 09  
    Decenter Y tolerance on surface 1 a"EQldm|d  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 uY;/3 ?k&  
    Change in Focus                :       0.000000                            0.000000 C8t+-p  
    Tilt X tolerance on surface (degrees) 1 4\$Ze0tv  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 gai?LXM l}  
    Change in Focus                :       0.000000                            0.000000 !tb RqW6v  
    Tilt Y tolerance on surface (degrees) 1 g Sa,A  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 }40/GWp<f  
    Change in Focus                :       0.000000                            0.000000 Maxnk3n  
    Decenter X tolerance on surface 2 >`NM?KP s  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 .K7A!;  
    Change in Focus                :       0.000000                            0.000000 h:GOcLYM@X  
    Decenter Y tolerance on surface 2 1L9^N  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 vj_oMmjKw  
    Change in Focus                :       0.000000                            0.000000 c:$:j,i}  
    Tilt X tolerance on surface (degrees) 2 r2<+ =INn  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ! \gRXP}  
    Change in Focus                :       0.000000                            0.000000 Y^!40XjrD  
    Tilt Y tolerance on surface (degrees) 2 nQP0<_S  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 +(/Z=4;,[  
    Change in Focus                :       0.000000                            0.000000 IB?A]oN1{  
    Decenter X tolerance on surface 3 (la   
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 F9c2JBOM  
    Change in Focus                :       0.000000                            0.000000 NV91{o(-7  
    Decenter Y tolerance on surface 3 E8j9@BHU[r  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 wM yPR_  
    Change in Focus                :       0.000000                            0.000000 M"FAUqz`  
    Tilt X tolerance on surface (degrees) 3 P! 3$RO  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Pw7'6W1  
    Change in Focus                :       0.000000                            0.000000 zHU#Jjc_b  
    Tilt Y tolerance on surface (degrees) 3 + zrwz\  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 |knP  
    Change in Focus                :       0.000000                            0.000000 s<dD>SU  
    Irregularity of surface 1 in fringes '^J/aV  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 :E^B~ OuL  
    Change in Focus                :       0.000000                            0.000000 .ClCP?HG  
    Irregularity of surface 2 in fringes (Q4_3<G+  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 p/5!a~1'xN  
    Change in Focus                :       0.000000                            0.000000 {xykf7zp  
    Irregularity of surface 3 in fringes I{AU,  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ps [6)d)o  
    Change in Focus                :       0.000000                            0.000000 M!hby31  
    Index tolerance on surface 1 I/> IB   
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 <s2l*mc  
    Change in Focus                :       0.000000                            0.000000 2l SM`cw  
    Index tolerance on surface 2 Pz)QOrrG~  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 mQvKreo~  
    Change in Focus                :       0.000000                           -0.000000 |{jAMC0#  
    EGDE4n5>I  
    Worst offenders: :aqh8b v  
    Type                      Value      Criterion        Change u}rot+)%  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 R] [M_ r  
    TSTY   2             0.20000000     0.35349910    -0.19053324 [!q&r(-K  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 qB39\j  
    TSTX   2             0.20000000     0.35349910    -0.19053324 b mm@oi  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 $`Xx5 Ts7  
    TSTY   1             0.20000000     0.42678383    -0.11724851 VoyH:  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Y1'.m5E  
    TSTX   1             0.20000000     0.42678383    -0.11724851 wW<"l"x,  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 #-Rz`Y<&  
    TSTY   3             0.20000000     0.42861670    -0.11541563 d-<y'GYw  
    )f!dG(\&#  
    Estimated Performance Changes based upon Root-Sum-Square method: 6uXW`/lvX  
    Nominal MTF                 :     0.54403234 IX*S:7S[  
    Estimated change            :    -0.36299231 CU;nrd"  
    Estimated MTF               :     0.18104003 r:5Ve&~  
    g Oj5c  
    Compensator Statistics: w.Vynb  
    Change in back focus: &v-V_.0(H  
    Minimum            :        -0.000000 F=om^6G%X5  
    Maximum            :         0.000000 >YBpB,WND  
    Mean               :        -0.000000 Z :9VxZ  
    Standard Deviation :         0.000000 by U\I5  
    _tReZ(Vw  
    Monte Carlo Analysis: oGVSy`ku  
    Number of trials: 20 $.N~AA~0  
    1a$V{Eag  
    Initial Statistics: Normal Distribution huoKr  
    q-G|@6O  
      Trial       Criterion        Change 8$v7|S6 z  
          1     0.42804416    -0.11598818 ye|a#a9N  
    Change in Focus                :      -0.400171 h*KHEg"+  
          2     0.54384387    -0.00018847 yUW&Wgc=:  
    Change in Focus                :       1.018470 JZ% F  
          3     0.44510003    -0.09893230 |3,V%>z  
    Change in Focus                :      -0.601922 6XAr8mw9  
          4     0.18154684    -0.36248550 P082.:q"  
    Change in Focus                :       0.920681 xN m32~  
          5     0.28665820    -0.25737414 j?f <hQ  
    Change in Focus                :       1.253875 0#[f2X62B  
          6     0.21263372    -0.33139862 yOK])&c  
    Change in Focus                :      -0.903878 Z&w^9;30P  
          7     0.40051424    -0.14351809 p}A4K#G  
    Change in Focus                :      -1.354815 M91lV(Z   
          8     0.48754161    -0.05649072 unnx#e]  
    Change in Focus                :       0.215922 Hm VTfH'  
          9     0.40357468    -0.14045766 ]kkBgjQbS  
    Change in Focus                :       0.281783 2]3HX3  
         10     0.26315315    -0.28087919 n+qVT4o  
    Change in Focus                :      -1.048393 S%X\ ,N  
         11     0.26120585    -0.28282649 5; PXF  
    Change in Focus                :       1.017611 WQ}!]$<"y  
         12     0.24033815    -0.30369419 _Hu2[lV  
    Change in Focus                :      -0.109292 #a |ch6B  
         13     0.37164046    -0.17239188 bfJ`}xl(8  
    Change in Focus                :      -0.692430 q83~j `ZJ$  
         14     0.48597489    -0.05805744 NceB'YG|  
    Change in Focus                :      -0.662040 X^D9)kel  
         15     0.21462327    -0.32940907 Dsj|~J3  
    Change in Focus                :       1.611296 [u9JL3  
         16     0.43378226    -0.11025008 2ly,l[p8  
    Change in Focus                :      -0.640081 bk wa{V  
         17     0.39321881    -0.15081353 BO4 K#H7  
    Change in Focus                :       0.914906 @qPyrgy  
         18     0.20692530    -0.33710703 'n[+r}3  
    Change in Focus                :       0.801607 8F^,8kIR  
         19     0.51374068    -0.03029165 uR ;-eK  
    Change in Focus                :       0.947293 ~$4.Mf,u  
         20     0.38013374    -0.16389860 em1cc,  
    Change in Focus                :       0.667010 U>_IYT  
    l^!A  
    Number of traceable Monte Carlo files generated: 20 i6md fp|k  
    ?JgO-.  
    Nominal     0.54403234 aw/7Z`   
    Best        0.54384387    Trial     2 "Ug/ ',jkV  
    Worst       0.18154684    Trial     4 VS9]p o>=  
    Mean        0.35770970 x$n~f:1Y  
    Std Dev     0.11156454 }@14E-N=  
    >HPvgR/#BY  
    [2'm`tZL  
    Compensator Statistics: Hs%QEvZl  
    Change in back focus: g. ?*F#2  
    Minimum            :        -1.354815 xIQ/$[&v  
    Maximum            :         1.611296 2]D$|M?$~  
    Mean               :         0.161872 xegQRc  
    Standard Deviation :         0.869664 bEBBwv  
    *IWFeu7y  
    90% >       0.20977951               QtY hg$K3  
    80% >       0.22748071               0\'Q&oTo  
    50% >       0.38667627               q#99iiG1  
    20% >       0.46553746               -XVEV  
    10% >       0.50064115                wb6L? t  
    @VC .>  
    End of Run. ,\lY Px\P[  
    VW9>xVd4  
    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 a|QE *s.  
    [0u.}c;(  
    kS+r"e .TM  
    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 _ktK+8*6`  
    Tr8AG>  
    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                 >~I#JQ%  
    80% >       0.22748071                 eV"!/A2:N5  
    50% >       0.38667627                 <9P4}`%)3  
    20% >       0.46553746                 5Sr4-F+@%  
    10% >       0.50064115 D.'h?^kA  
    25 CZmsg  
    最后这个数值是MTF值呢,还是MTF的公差? XJqTmj3   
    g;pR^D'M5C  
    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???   !^m%O0DT  
    CuH2E>wz  
    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  : & $'z  
    90% >       0.20977951                 g:7,~}_}^  
    80% >       0.22748071                 ZE?f!ifp  
    50% >       0.38667627                 UH? p]4Nz  
    20% >       0.46553746                 L[g0&b%%-  
    10% >       0.50064115 ]}Z4P-"t  
    ....... b&#DnZcf  
    'm3t|:nMU  
    /P:.qtT(  
    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   aAE>)#f(  
    Mode                : Sensitivities ^T5X)Nu{=C  
    Sampling            : 2 r%@Lej5+  
    Nominal Criterion   : 0.54403234 m8R9{LC  
    Test Wavelength     : 0.6328 ritBU:6  
    3S*AxAeg  
    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? v+ 7kU=  
    ldha|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
    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