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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 RqRyZ*n  
    ( t59SY  
    f~Q]"I8w  
    gWpG-RL0  
    然后添加了默认公差分析，基本没变 U# 7K^(E9  
    d+158qQOh]  
    %hH@< <b(s  
    hT?|:!ED.F  
    然后运行分析的结果如下： '(!U5j  
    +W[NgUrGJ  
    Analysis of Tolerances ]d -U  
    eL{6;.C  
    File : E:\光学设计资料\zemax练习\f500.ZMX y?.l9  
    Title: T@x_}a:g  
    Date : TUE JUN 21 2011  dPCn6  
    J!@`tR-  
    Units are Millimeters. ,ou&WI yC  
    All changes are computed using linear differences. "E}38  
    /w2jlu}yt  
    Paraxial Focus compensation only. zaMKwv}BR  
    hz*H,E!>  
    WARNING: Solves should be removed prior to tolerancing. $61j_;WF`  
    yy#4DYht  
    Mnemonics: +je{%,*  
    TFRN: Tolerance on curvature in fringes. JPGEE1!B{b  
    TTHI: Tolerance on thickness. *#g[ jl4  
    TSDX: Tolerance on surface decentering in x. _8'z"w F  
    TSDY: Tolerance on surface decentering in y. BNpc-O~  
    TSTX: Tolerance on surface tilt in x (degrees). DZ5QC aA  
    TSTY: Tolerance on surface tilt in y (degrees). G*\U'w4w|*  
    TIRR: Tolerance on irregularity (fringes). fe$OPl~  
    TIND: Tolerance on Nd index of refraction. gO,2:,  
    TEDX: Tolerance on element decentering in x. 8lfKlXR78  
    TEDY: Tolerance on element decentering in y. Zz@wbhMV  
    TETX: Tolerance on element tilt in x (degrees). B96"|v$  
    TETY: Tolerance on element tilt in y (degrees). YCnKX<Wv  
    P2>Y0"bY  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. atmTI`i  
    V/W{d[86G  
    WARNING: Boundary constraints on compensators will be ignored. 4VrL@c @  
    3?:?dy(3z  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm E{W(5.kb;i  
    Mode                : Sensitivities +!Lz]@9K  
    Sampling            : 2 3}25=%;[  
    Nominal Criterion   : 0.54403234 >P[BwL]  
    Test Wavelength     : 0.6328 F=l.2t*9  
    Kb,#Ot  
    kQQhZ8Ch  
    Fields: XY Symmetric Angle in degrees w6FVSU]sY  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY nMU[S +  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 h(MS>=  
    L qdz qq  
    Sensitivity Analysis: A ^U`c'$  
    C3GI?| b  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| l_z@.</8P@  
    Type                      Value      Criterion        Change          Value      Criterion        Change TSHH=`cx  
    Fringe tolerance on surface 1 Jl|^  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 JDj^7\`  
    Change in Focus                :      -0.000000                            0.000000 \bzT=^Z;2  
    Fringe tolerance on surface 2 `R{ ZED l'  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 9i*Xd$ G  
    Change in Focus                :       0.000000                            0.000000 71inHg  
    Fringe tolerance on surface 3 EGIwqci:  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 4 N{5i )  
    Change in Focus                :      -0.000000                            0.000000 ruTj#tWSo  
    Thickness tolerance on surface 1 ' &j]~m  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ![CF >:e  
    Change in Focus                :       0.000000                            0.000000 \(a!U,]LM  
    Thickness tolerance on surface 2  &j_:VP  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Cv;\cI"&  
    Change in Focus                :       0.000000                           -0.000000 @!:_r5R~N  
    Decenter X tolerance on surfaces 1 through 3 nps"nggk  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 BLQD=?Q  
    Change in Focus                :       0.000000                            0.000000 ;gmfWHB<  
    Decenter Y tolerance on surfaces 1 through 3 ;OD+6@Sr  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 nH -1,#`g  
    Change in Focus                :       0.000000                            0.000000 j~VHU89  
    Tilt X tolerance on surfaces 1 through 3 (degrees) *&sXC@^@^  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Xsit4Ma  
    Change in Focus                :       0.000000                            0.000000 >W7IWhm3  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) kFsq23Ne  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 2-!n+#Cdf  
    Change in Focus                :       0.000000                            0.000000 g1zX^^nd,V  
    Decenter X tolerance on surface 1 n^7m^1to  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 N>3X!K  
    Change in Focus                :       0.000000                            0.000000 #Y'svn1H  
    Decenter Y tolerance on surface 1 .vJ t&@NO  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 s#2<^6  
    Change in Focus                :       0.000000                            0.000000 $,L,VYN  
    Tilt X tolerance on surface (degrees) 1 At=l>  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 sg!* %*XQ  
    Change in Focus                :       0.000000                            0.000000 n`af2I2  
    Tilt Y tolerance on surface (degrees) 1 8 y+Nl&"V  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 wM#BQe3t#  
    Change in Focus                :       0.000000                            0.000000 1[Ffl^\ARp  
    Decenter X tolerance on surface 2 .ugQH<B  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807  e+=IGYC  
    Change in Focus                :       0.000000                            0.000000 [J6 b5  
    Decenter Y tolerance on surface 2 zA?]AL(+YW  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 l5bd);L tq  
    Change in Focus                :       0.000000                            0.000000 mbm|~UwD  
    Tilt X tolerance on surface (degrees) 2 #m<<]L(o8W  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 6a\YD{D] _  
    Change in Focus                :       0.000000                            0.000000 ZFsJeF'"  
    Tilt Y tolerance on surface (degrees) 2 "-;l{tL  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 %B{NH~  
    Change in Focus                :       0.000000                            0.000000 !NfN16  
    Decenter X tolerance on surface 3 en6oFPG   
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 baVSQtda  
    Change in Focus                :       0.000000                            0.000000 ;r}>1LhN  
    Decenter Y tolerance on surface 3 A"8"e*  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 OK"B`*  
    Change in Focus                :       0.000000                            0.000000 _2C[F~ +l  
    Tilt X tolerance on surface (degrees) 3 V*U*_Y  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 =P.m5e<  
    Change in Focus                :       0.000000                            0.000000 %Kq`8  
    Tilt Y tolerance on surface (degrees) 3 H!NyM}jsr  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 T)NnWEB  
    Change in Focus                :       0.000000                            0.000000 C*I~14  
    Irregularity of surface 1 in fringes F]SA1ry  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 O7A W9*<  
    Change in Focus                :       0.000000                            0.000000 s s*% 3<  
    Irregularity of surface 2 in fringes *NDM{WB|)  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ?]# U~M<'  
    Change in Focus                :       0.000000                            0.000000 ~<, QxFG5  
    Irregularity of surface 3 in fringes D/&^Y'|T  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ]O\Oj6C  
    Change in Focus                :       0.000000                            0.000000 4mY(*2:HC  
    Index tolerance on surface 1 5z>kz/uxW  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 KiJRq>  
    Change in Focus                :       0.000000                            0.000000 1E*No1  
    Index tolerance on surface 2 iJrF$Xw  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ?5<Q+ G0r  
    Change in Focus                :       0.000000                           -0.000000 NZyGC Vh@  
    oVLgHB\zL  
    Worst offenders: -K_p? l  
    Type                      Value      Criterion        Change Q/,bEDc&  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 %dMP}k/  
    TSTY   2             0.20000000     0.35349910    -0.19053324 W5_:Q @  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 |GvWHe`  
    TSTX   2             0.20000000     0.35349910    -0.19053324 s=+,F<;x.U  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 cv b:FK  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Y70[Nz  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 ByrK|lVM0  
    TSTX   1             0.20000000     0.42678383    -0.11724851 b$f@.L  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 hZ0CnY8 '  
    TSTY   3             0.20000000     0.42861670    -0.11541563 WUM&Lq k"  
    AAr[xo iYp  
    Estimated Performance Changes based upon Root-Sum-Square method: DJ)z~W2I*  
    Nominal MTF                 :     0.54403234 W(oJ{R&m{  
    Estimated change            :    -0.36299231 R`wL%I!?f  
    Estimated MTF               :     0.18104003 VV*Z5U@b  
    3f2%+2Zjt,  
    Compensator Statistics: /- qS YS(  
    Change in back focus: hZE" 8%\q  
    Minimum            :        -0.000000 ' {L5 3cH=  
    Maximum            :         0.000000 g{zvks~it  
    Mean               :        -0.000000 9U_uw Rv2  
    Standard Deviation :         0.000000 \G?GX  
    xm }9(EJ  
    Monte Carlo Analysis: (RR:{4I  
    Number of trials: 20 G/nSF:rp  
    :@:i*2=  
    Initial Statistics: Normal Distribution Zz<k^  
    }dl[~iKW  
      Trial       Criterion        Change pcd*K)  
          1     0.42804416    -0.11598818 mTcopyp  
    Change in Focus                :      -0.400171 "F(LTppy  
          2     0.54384387    -0.00018847 W)dQ yZ>J  
    Change in Focus                :       1.018470 ,Jy@n]x  
          3     0.44510003    -0.09893230 <n4T*  
    Change in Focus                :      -0.601922 Q`"gKBN1  
          4     0.18154684    -0.36248550 HJVi:;o  
    Change in Focus                :       0.920681 p&SxR}h  
          5     0.28665820    -0.25737414 W=fw*ro  
    Change in Focus                :       1.253875 b]'Uv8fbF  
          6     0.21263372    -0.33139862 #,0PLU3%  
    Change in Focus                :      -0.903878 B>&Q]J+R  
          7     0.40051424    -0.14351809 Ak`7f$z  
    Change in Focus                :      -1.354815 $^Is|]^  
          8     0.48754161    -0.05649072 7~@9=e8G  
    Change in Focus                :       0.215922 VQ5D?^'0/  
          9     0.40357468    -0.14045766 R36BvW0X  
    Change in Focus                :       0.281783 "+oP((9  
         10     0.26315315    -0.28087919 )[d?&GK  
    Change in Focus                :      -1.048393 l^ P[nQDH  
         11     0.26120585    -0.28282649 ,m| :U  
    Change in Focus                :       1.017611 ~c&ygL3  
         12     0.24033815    -0.30369419 ^gb3DNV~y  
    Change in Focus                :      -0.109292 "|?zQ?E  
         13     0.37164046    -0.17239188 9`P<|(  
    Change in Focus                :      -0.692430 {sn RS)-  
         14     0.48597489    -0.05805744 :.863_/  
    Change in Focus                :      -0.662040 f}JiYZ  
         15     0.21462327    -0.32940907 DJxe3<  
    Change in Focus                :       1.611296 g.wp }fz  
         16     0.43378226    -0.11025008 Y}<w)b1e|  
    Change in Focus                :      -0.640081 `nAR/Ye  
         17     0.39321881    -0.15081353 .+|HJ(  
    Change in Focus                :       0.914906 _l`d+ \#  
         18     0.20692530    -0.33710703 E+LAE/v@  
    Change in Focus                :       0.801607 = GN1l[X  
         19     0.51374068    -0.03029165 f tS^|%p  
    Change in Focus                :       0.947293 _4eSDO[h  
         20     0.38013374    -0.16389860 \LYB% K}  
    Change in Focus                :       0.667010 3uSj5+@q6  
    J!O{.v  
    Number of traceable Monte Carlo files generated: 20 C|#GODA  
    Y>Oh]?  
    Nominal     0.54403234 KIyhvY~  
    Best        0.54384387    Trial     2 @>>8CU^~  
    Worst       0.18154684    Trial     4 4+rr3 $AY  
    Mean        0.35770970 xLxXc!{J5  
    Std Dev     0.11156454 5Lmhip  
    =:)p\{B  
    v2OK/W,0  
    Compensator Statistics: 'Z(KE2&?  
    Change in back focus: ^|u7+b'|t  
    Minimum            :        -1.354815 05 P#gs`<  
    Maximum            :         1.611296 RO>3U2  
    Mean               :         0.161872 &J>XKO nl  
    Standard Deviation :         0.869664 D hN{Y8'~  
    j#}wg`P"A  
    90% >       0.20977951               I4[sf  
    80% >       0.22748071                rG#o*oA  
    50% >       0.38667627               $1aJdZC7  
    20% >       0.46553746               %2H0JXKa,  
    10% >       0.50064115                Hz?C9q3BX  
    <ttrd%VW  
    End of Run. 0\qLuF[)  
    "H{Et b/  
    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 ,\YlDcl':0  
    D<V[:~-o  
    5Q)hl.<{o7  
    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 bl8zcpdL  
    OoW,mmthj>  
    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                 Quq X4  
    80% >       0.22748071                 @IXvp3r  
    50% >       0.38667627                 `@_j Do  
    20% >       0.46553746                 ES4[@RX  
    10% >       0.50064115 j7(S=  
    MH0xD  
    最后这个数值是MTF值呢，还是MTF的公差？ n_ 3g  
    S17iYjy#8T  
    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？？？   Th'B5:`  
    ]QJ N` ;b0  
    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  : hRI?>an  
    90% >       0.20977951                 ^//`Dz  
    80% >       0.22748071                  nJ|M  
    50% >       0.38667627                 |ERf3  
    20% >       0.46553746                 Q35D7wo'}  
    10% >       0.50064115 8D&yFal  
    ....... iO dk)  
    N Wf IRL  
    )1E#'v12 "  
    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   6=p!`DOd  
    Mode                : Sensitivities >9Z7l63+}  
    Sampling            : 2 .c]@xoC  
    Nominal Criterion   : 0.54403234 fn, YH  
    Test Wavelength     : 0.6328 eZ|_wB'r  
    xs^wRE_  
    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？ @e2P3K gg  
    NL-V",gI-~  
    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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