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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 {FteQ@(  
    CSR 6  
    _)ZAf% f?  
     >pT92VN  
    然后添加了默认公差分析，基本没变 V :*GG+4  
    -;_NdL@  
    kT[]^Jtc  
    Fu(e4E  
    然后运行分析的结果如下： rKP"|+^  
    "u3  
    Analysis of Tolerances yAi#Y3!::  
    M%1-fd  
    File : E:\光学设计资料\zemax练习\f500.ZMX EAqTXB@XU  
    Title: *B#<5<T  
    Date : TUE JUN 21 2011 Qf$0^$ "  
    1W "9u   
    Units are Millimeters. hJrxb<9@Y0  
    All changes are computed using linear differences. na?jCq9C  
    I^qk`5w  
    Paraxial Focus compensation only. q;}^Jpb;  
    @$F(({?  
    WARNING: Solves should be removed prior to tolerancing. ~i=/@;wRp  
    9c}LG5  
    Mnemonics: !3-mPG< ]  
    TFRN: Tolerance on curvature in fringes. B@63=a*kG  
    TTHI: Tolerance on thickness. R5H UgI  
    TSDX: Tolerance on surface decentering in x. $xvEYK  
    TSDY: Tolerance on surface decentering in y. ;KbnaUAS8  
    TSTX: Tolerance on surface tilt in x (degrees). fp:j~a>E  
    TSTY: Tolerance on surface tilt in y (degrees). qF%wl  
    TIRR: Tolerance on irregularity (fringes). q@8Rlc&  
    TIND: Tolerance on Nd index of refraction. M#=woj&[  
    TEDX: Tolerance on element decentering in x. ygd'Nh!@  
    TEDY: Tolerance on element decentering in y. TEE$1RxV(  
    TETX: Tolerance on element tilt in x (degrees). 7: J6 F  
    TETY: Tolerance on element tilt in y (degrees). ^r(2 r  
    1;?b-FEq:  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 7 G~MqnO|  
    )qzJu*cQ  
    WARNING: Boundary constraints on compensators will be ignored. ?F(t`0=  
    VrQw;-rQ  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm ceH7Rq:4W  
    Mode                : Sensitivities KG4~t=J`  
    Sampling            : 2 xPq3Sfg`A  
    Nominal Criterion   : 0.54403234 <Zl0$~B:5  
    Test Wavelength     : 0.6328 '"GdO;}&  
    6$%]p1"!K  
    dU:s^^f&R  
    Fields: XY Symmetric Angle in degrees B5=L</Aj  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY P2 !~}{-  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 (x&#>5  
    nD MNaMYb  
    Sensitivity Analysis: 0 m";=:(w  
    _&19OD%  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| H1s{JJAM>i  
    Type                      Value      Criterion        Change          Value      Criterion        Change }{bO ~L7  
    Fringe tolerance on surface 1 !`=r('l  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 Hu1w/PLq  
    Change in Focus                :      -0.000000                            0.000000 ;yBq'_e3  
    Fringe tolerance on surface 2 tE(x8>5A:  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 xDRK^nmC  
    Change in Focus                :       0.000000                            0.000000 y;;^o6Gnw  
    Fringe tolerance on surface 3 Q]{DhDz ?+  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 iMk`t:!;#"  
    Change in Focus                :      -0.000000                            0.000000 riFE.;  
    Thickness tolerance on surface 1 nFw&vR/q  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Y49kq}  
    Change in Focus                :       0.000000                            0.000000 4y>G6TD^  
    Thickness tolerance on surface 2 I".d>]16|  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 &e cf5jFy  
    Change in Focus                :       0.000000                           -0.000000 |+suGqo  
    Decenter X tolerance on surfaces 1 through 3 r/:9j(yxr  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 b[e+(X  
    Change in Focus                :       0.000000                            0.000000 &b"PjtU.X  
    Decenter Y tolerance on surfaces 1 through 3 8eWb{n uJ>  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 @zsr.d6Q  
    Change in Focus                :       0.000000                            0.000000 zh*NRN  
    Tilt X tolerance on surfaces 1 through 3 (degrees) !6f#OAP\  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 M?)>, !Z)  
    Change in Focus                :       0.000000                            0.000000 "84.qgYaG  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) :S~XE  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 R0oP##]  
    Change in Focus                :       0.000000                            0.000000 { F. Ihw  
    Decenter X tolerance on surface 1 z4UeUVfZ}  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 i` Lt=)@&  
    Change in Focus                :       0.000000                            0.000000 `4\H'p  
    Decenter Y tolerance on surface 1 gmJJ(}HVz  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 f\^FUJy  
    Change in Focus                :       0.000000                            0.000000 r IS \#j  
    Tilt X tolerance on surface (degrees) 1 OM}:1He  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 |M9x&(H;Hw  
    Change in Focus                :       0.000000                            0.000000 B0Xn9Tvk  
    Tilt Y tolerance on surface (degrees) 1 Ji%T|KR_  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 BE%#4c.b  
    Change in Focus                :       0.000000                            0.000000 F =d L#@^  
    Decenter X tolerance on surface 2 l#]Z?zW.  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807  "}Ya.  
    Change in Focus                :       0.000000                            0.000000 Q8z>0ci3o  
    Decenter Y tolerance on surface 2 |}'}TYX0:  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 lt}|Y9h  
    Change in Focus                :       0.000000                            0.000000 }tc,3> /  
    Tilt X tolerance on surface (degrees) 2 -kQ{~"> w  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 (_U&EX%  
    Change in Focus                :       0.000000                            0.000000 1)%9h>F7  
    Tilt Y tolerance on surface (degrees) 2 )oHIRsr  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 LT2mwJl  
    Change in Focus                :       0.000000                            0.000000 :R<,J=+$u  
    Decenter X tolerance on surface 3 r&Za*TD^  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 $~zqt%}  
    Change in Focus                :       0.000000                            0.000000 .o.@cLdU  
    Decenter Y tolerance on surface 3 j0:F E  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Z-]d_Y~m4  
    Change in Focus                :       0.000000                            0.000000 7m@pdq5Ub  
    Tilt X tolerance on surface (degrees) 3 RQ}x7< /{  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 |wVoJO!O}  
    Change in Focus                :       0.000000                            0.000000 stoBjDS  
    Tilt Y tolerance on surface (degrees) 3 CF =#?+x  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 VY~WkSi[<  
    Change in Focus                :       0.000000                            0.000000 Njz,y}\  
    Irregularity of surface 1 in fringes D zl#[|q  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 VaSw}q/o:/  
    Change in Focus                :       0.000000                            0.000000 C=%go1! $  
    Irregularity of surface 2 in fringes ^x:4%%Q]l  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 -[Zau$;J<  
    Change in Focus                :       0.000000                            0.000000 ?ix0n,m  
    Irregularity of surface 3 in fringes 5 BcuLRId:  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 YN"102CK  
    Change in Focus                :       0.000000                            0.000000 i!YZF$|  
    Index tolerance on surface 1 .yg"!X  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 JL;H:`x  
    Change in Focus                :       0.000000                            0.000000 .' D+De&y  
    Index tolerance on surface 2 ][wS}~):  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 a[Txd=b  
    Change in Focus                :       0.000000                           -0.000000 :M|bw{P*  
    Nk}Hvg*(  
    Worst offenders: :Q$3P+6a  
    Type                      Value      Criterion        Change (IJf2  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 &~||<0m  
    TSTY   2             0.20000000     0.35349910    -0.19053324 CdTmL{Y1  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 S)JZ b_  
    TSTX   2             0.20000000     0.35349910    -0.19053324 YF&SH)Y7  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 T']*h8  
    TSTY   1             0.20000000     0.42678383    -0.11724851  _%i|*  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 !4.;Ftgjn  
    TSTX   1             0.20000000     0.42678383    -0.11724851 pklcRrx,a  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 {fIH9+v  
    TSTY   3             0.20000000     0.42861670    -0.11541563 BIV]4vl-&  
    :GL|:  
    Estimated Performance Changes based upon Root-Sum-Square method: _;LHC;,:  
    Nominal MTF                 :     0.54403234 RA.@(DN&  
    Estimated change            :    -0.36299231 /xsa-F  
    Estimated MTF               :     0.18104003 z^B!-FcIz>  
    ^D vaT9s  
    Compensator Statistics: O]{H2&k@  
    Change in back focus: pR\etXeLd  
    Minimum            :        -0.000000 5l(;+#3y/  
    Maximum            :         0.000000 (W@ ypK@  
    Mean               :        -0.000000 \dufKeiS&a  
    Standard Deviation :         0.000000 Z$WT ~V  
    uLL#(bhDr  
    Monte Carlo Analysis: A9lqVMp64  
    Number of trials: 20 2sittP  
    +;; fw |/  
    Initial Statistics: Normal Distribution @ju-cv+  
    6[qRb+ds  
      Trial       Criterion        Change vBM\W%T|d  
          1     0.42804416    -0.11598818 = b)q.2'#  
    Change in Focus                :      -0.400171 aty K^*aX  
          2     0.54384387    -0.00018847 !uHI5k,f  
    Change in Focus                :       1.018470 7 ic]q,  
          3     0.44510003    -0.09893230 R^8Opf_UN  
    Change in Focus                :      -0.601922 |: nuT$(  
          4     0.18154684    -0.36248550 &+sO"j4<?r  
    Change in Focus                :       0.920681 AKAAb~{  
          5     0.28665820    -0.25737414 9`09.`U9[  
    Change in Focus                :       1.253875 x$s#';*  
          6     0.21263372    -0.33139862 6xBP72L;%"  
    Change in Focus                :      -0.903878 =20Q! wcu  
          7     0.40051424    -0.14351809 }#yRa Ip  
    Change in Focus                :      -1.354815 spe9^.SI  
          8     0.48754161    -0.05649072 yyA/x,  
    Change in Focus                :       0.215922 7rhpIP2n  
          9     0.40357468    -0.14045766 8-SVgo(  
    Change in Focus                :       0.281783 ;G},xDGO_m  
         10     0.26315315    -0.28087919 :fj}J)9'xW  
    Change in Focus                :      -1.048393 r_2  
         11     0.26120585    -0.28282649 9r8{9h:  
    Change in Focus                :       1.017611 h_A}i2/{  
         12     0.24033815    -0.30369419 {yG)Ii  
    Change in Focus                :      -0.109292 (bT\HW%m  
         13     0.37164046    -0.17239188 iK.MC%8?  
    Change in Focus                :      -0.692430 k| jC c  
         14     0.48597489    -0.05805744 a7d782~  
    Change in Focus                :      -0.662040 (p2\H>pTr  
         15     0.21462327    -0.32940907 n%?g+@y,^  
    Change in Focus                :       1.611296 M_XZOlW5  
         16     0.43378226    -0.11025008 s]2k@3|e  
    Change in Focus                :      -0.640081 m' aakq  
         17     0.39321881    -0.15081353 {fGi:b\[ 8  
    Change in Focus                :       0.914906 AN.`tv  
         18     0.20692530    -0.33710703 {)%B?75~  
    Change in Focus                :       0.801607 >2v_fw  
         19     0.51374068    -0.03029165 p 3_Q  
    Change in Focus                :       0.947293 ;N/c5+  
         20     0.38013374    -0.16389860 qi)(\  
    Change in Focus                :       0.667010 GUcuD^Fe  
    '+}hVfN  
    Number of traceable Monte Carlo files generated: 20 Z,d/FC#y(  
    D<rjxP  
    Nominal     0.54403234 UIu'x_qc  
    Best        0.54384387    Trial     2 {?j|]j  
    Worst       0.18154684    Trial     4 O}KT>84M  
    Mean        0.35770970 t^7R6y  
    Std Dev     0.11156454 .<j8>1  
    6}|vfw  
    o+tY[UX  
    Compensator Statistics: rVN|OLh  
    Change in back focus: D'2O#Rj4q  
    Minimum            :        -1.354815 > PYe"  
    Maximum            :         1.611296 da-3hM!u+  
    Mean               :         0.161872 >Ek `PVPD  
    Standard Deviation :         0.869664 qt1# P  
    d>aZpJ[.  
    90% >       0.20977951               AG9U2x  
    80% >       0.22748071               @TH \hr]  
    50% >       0.38667627               s/T5aJR  
    20% >       0.46553746               &R8zuD`#  
    10% >       0.50064115                }U(^QB  
    TQEZ<B$  
    End of Run. |FNP~5v  
    W!Xgse3  
    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 :4Y|%7[  
    6-JnT_  
    4s"HO/  
    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 *U]f6Q<X  
    c^=:]^  
    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                 yRy9*r=  
    80% >       0.22748071                 L%BWrmg  
    50% >       0.38667627                 u&g} !Smc8  
    20% >       0.46553746                 NyGF57v[M  
    10% >       0.50064115 ~L1N1Z)Kk  
    u!X 2ju<  
    最后这个数值是MTF值呢，还是MTF的公差？ X!"y>J  
    ;J`X0Vl$  
    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？？？   7/~"\nN:/  
    -Pvt+I>  
    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  : c2y5[L7?  
    90% >       0.20977951                 J0x)m2  
    80% >       0.22748071                 HH]LvK  
    50% >       0.38667627                 cBAA32wf  
    20% >       0.46553746                 +[>m`XTq  
    10% >       0.50064115 c~Ha68  
    ....... v<c8qg  
    Kg%_e9nj#  
    uXp0D$a  
    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   ? 1_*ct=g9  
    Mode                : Sensitivities O6m}#?Ai/@  
    Sampling            : 2 $cYh X^YG.  
    Nominal Criterion   : 0.54403234 -()CgtSR  
    Test Wavelength     : 0.6328 j]jwQRe  
    ;]'mx  
    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？ 7mt;qn?n  
     >.0B%  
    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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