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    [讨论]公差分析结果的疑问 [复制链接]

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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 B_1u<00kg  
    Ft>8 YYyU  
    S5p\J!k\B  
    e 2&i  
    然后添加了默认公差分析,基本没变 /R?uxhV  
    y 9mZQq  
    !KW)*  
    Vi~+C@96  
    然后运行分析的结果如下: tG&B D\  
    -B! TA0=oJ  
    Analysis of Tolerances EnAw8Gm*  
    JG$J,!.\  
    File : E:\光学设计资料\zemax练习\f500.ZMX KPrxw }P  
    Title: l$@lk?dc  
    Date : TUE JUN 21 2011 5,fzB~$TX(  
    `2+52q<FO  
    Units are Millimeters. JB}h }nb  
    All changes are computed using linear differences. e;\c=J,eE  
    Qc/J"<Lx  
    Paraxial Focus compensation only. <T9m.:l  
    Unk+@$E&  
    WARNING: Solves should be removed prior to tolerancing. ` &DiM@Sm  
    z<XS"4l?W  
    Mnemonics: dg<fUQ  
    TFRN: Tolerance on curvature in fringes. _JB3+0@  
    TTHI: Tolerance on thickness. %8}w!2D S  
    TSDX: Tolerance on surface decentering in x. =,9'O/br  
    TSDY: Tolerance on surface decentering in y. 3mpjSL  
    TSTX: Tolerance on surface tilt in x (degrees). $l0w{m!P  
    TSTY: Tolerance on surface tilt in y (degrees). 2sq<"TlQXI  
    TIRR: Tolerance on irregularity (fringes). M6n.uho/  
    TIND: Tolerance on Nd index of refraction. ~0:c{v;4  
    TEDX: Tolerance on element decentering in x. cVi CWc2  
    TEDY: Tolerance on element decentering in y. WVFy ZpB  
    TETX: Tolerance on element tilt in x (degrees). A}O9e  
    TETY: Tolerance on element tilt in y (degrees). U{m:{'np(H  
    ;trR' ~  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Nzt1JHRS  
    o^J&c_U\3'  
    WARNING: Boundary constraints on compensators will be ignored. kv2:rmv  
    o$;x[US  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm ".=EAXVU  
    Mode                : Sensitivities m\Nc}P_"p  
    Sampling            : 2 A 2 )%+  
    Nominal Criterion   : 0.54403234 0}!lN{m?  
    Test Wavelength     : 0.6328 b?,y%D) '  
    ~KvCb3~X  
    F*u;'K   
    Fields: XY Symmetric Angle in degrees S6I8zk)Z4  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY "Y6mM_flq  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 r 6<}S(  
    m5*RB1  
    Sensitivity Analysis:  }P#gXG  
     su$juI{  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| UNae&Zir  
    Type                      Value      Criterion        Change          Value      Criterion        Change X8TZePh  
    Fringe tolerance on surface 1 v'=APl+_  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374  73X]|fy  
    Change in Focus                :      -0.000000                            0.000000 9IMcp~zX  
    Fringe tolerance on surface 2 $fO*229As  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 D=$<E x^p  
    Change in Focus                :       0.000000                            0.000000 wXnt3)e  
    Fringe tolerance on surface 3 Dc2eY.  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 oB@C-(M  
    Change in Focus                :      -0.000000                            0.000000 VdgPb (  
    Thickness tolerance on surface 1 hJM0A3(Cm  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 wH.'EC  
    Change in Focus                :       0.000000                            0.000000 9#7z jrB  
    Thickness tolerance on surface 2 >F v8 -  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 6fiJ' j@  
    Change in Focus                :       0.000000                           -0.000000 kp|reKM/  
    Decenter X tolerance on surfaces 1 through 3 <Lt$qV-#  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 # ,Y}  
    Change in Focus                :       0.000000                            0.000000 C}Q2UK-:  
    Decenter Y tolerance on surfaces 1 through 3 qZ.\GHS  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 L $~Id  
    Change in Focus                :       0.000000                            0.000000 l/5/|UE9  
    Tilt X tolerance on surfaces 1 through 3 (degrees) S/|8' x{<  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 bYfcn]N  
    Change in Focus                :       0.000000                            0.000000 Syb:i(Y  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) idq= US  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 YH9BJ  
    Change in Focus                :       0.000000                            0.000000 pWqahrWh  
    Decenter X tolerance on surface 1 ~F-,Q_|-  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Fei$94 a  
    Change in Focus                :       0.000000                            0.000000 L[^e< I  
    Decenter Y tolerance on surface 1 3ba"[C|  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 (~~=<0S  
    Change in Focus                :       0.000000                            0.000000 N'StT$(  
    Tilt X tolerance on surface (degrees) 1 6=FuH@Q&  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 h?b{{  
    Change in Focus                :       0.000000                            0.000000 R;%iu0  
    Tilt Y tolerance on surface (degrees) 1 P-C_sj A7  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 sQkP@Y  
    Change in Focus                :       0.000000                            0.000000 U"Y$7~  
    Decenter X tolerance on surface 2 Tr8+E;;  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 7?4>'  
    Change in Focus                :       0.000000                            0.000000 2WoB;=  
    Decenter Y tolerance on surface 2 8{RiaF8  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 KK?}`o  
    Change in Focus                :       0.000000                            0.000000 [": x  
    Tilt X tolerance on surface (degrees) 2 5R4 dN=L*1  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ZO,]h9?4  
    Change in Focus                :       0.000000                            0.000000 Ugn"w E  
    Tilt Y tolerance on surface (degrees) 2 KLk37IY2\  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 $I'ES#8P6  
    Change in Focus                :       0.000000                            0.000000 cG<?AR?wDT  
    Decenter X tolerance on surface 3 1DX=\BWp  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 c09uCito  
    Change in Focus                :       0.000000                            0.000000 q#Bdq8  
    Decenter Y tolerance on surface 3 xc!"?&\*  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ;tHF$1!J  
    Change in Focus                :       0.000000                            0.000000 /1Eg6hf9B  
    Tilt X tolerance on surface (degrees) 3 C$P3&k#W  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 w/&#UsEIr  
    Change in Focus                :       0.000000                            0.000000 )9*WmFc+#  
    Tilt Y tolerance on surface (degrees) 3 V\ |b#?KL  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 B>R6j}rh'k  
    Change in Focus                :       0.000000                            0.000000 |Qm 7x[i  
    Irregularity of surface 1 in fringes ?h {&  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 <X: 9y  
    Change in Focus                :       0.000000                            0.000000 ^71sIf;+  
    Irregularity of surface 2 in fringes <v\|@@X  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 "m!Cl-+u  
    Change in Focus                :       0.000000                            0.000000 UZyo:*yB  
    Irregularity of surface 3 in fringes wDsEx!\#  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 `0L!F"W  
    Change in Focus                :       0.000000                            0.000000 ,QK>e;:Be  
    Index tolerance on surface 1 n7 S[ F3  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 d+_qBp  
    Change in Focus                :       0.000000                            0.000000 %l>^q`p  
    Index tolerance on surface 2 qwN-VCj  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 xHf l>C'  
    Change in Focus                :       0.000000                           -0.000000 'p<(6*,"  
    z2r{AQ.&  
    Worst offenders: 4FYws5]$  
    Type                      Value      Criterion        Change s>kzt1,x  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 q|S }5  
    TSTY   2             0.20000000     0.35349910    -0.19053324 NJ|8##Z>  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 km *$;Nli  
    TSTX   2             0.20000000     0.35349910    -0.19053324 8 }-"&-X  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 6JJ%`Uojh  
    TSTY   1             0.20000000     0.42678383    -0.11724851 }%%| '8  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 4Y Kb~1qkk  
    TSTX   1             0.20000000     0.42678383    -0.11724851 "]sr4Jg=  
    TSTY   3            -0.20000000     0.42861670    -0.11541563  3o z]  
    TSTY   3             0.20000000     0.42861670    -0.11541563 _Ab|<!a/R  
    o0AREZ+I  
    Estimated Performance Changes based upon Root-Sum-Square method: $} ~:x_[  
    Nominal MTF                 :     0.54403234 K(hqDif*6  
    Estimated change            :    -0.36299231 -\>Xtix^-c  
    Estimated MTF               :     0.18104003 NKRNEq!  
    N O'-HKHj  
    Compensator Statistics: BwbvZfV|  
    Change in back focus: u{HB5QqK  
    Minimum            :        -0.000000 9'}m797I'  
    Maximum            :         0.000000 p 5P<3(  
    Mean               :        -0.000000 *vht</?J  
    Standard Deviation :         0.000000 D{ c`H}/`  
    MwiT1sB~  
    Monte Carlo Analysis: 0rF{"HM~  
    Number of trials: 20 ~/QzL.S;p  
    =*}|y;I  
    Initial Statistics: Normal Distribution JPmW0wM  
    HuG|BjP  
      Trial       Criterion        Change )wmXicURC  
          1     0.42804416    -0.11598818 x#U?~6.6  
    Change in Focus                :      -0.400171 ]GRPxh  
          2     0.54384387    -0.00018847 k{uc%6s  
    Change in Focus                :       1.018470 [9X1;bO#f  
          3     0.44510003    -0.09893230 \!`*F :7]-  
    Change in Focus                :      -0.601922 +[:}<^p?cG  
          4     0.18154684    -0.36248550 /,wG$b+  
    Change in Focus                :       0.920681 xCGvLvFn  
          5     0.28665820    -0.25737414 evq *&.6\  
    Change in Focus                :       1.253875 p^NYJV  
          6     0.21263372    -0.33139862 Wo\NX05-?  
    Change in Focus                :      -0.903878 iYR8sg[' #  
          7     0.40051424    -0.14351809 bq]af.o*  
    Change in Focus                :      -1.354815 F?3a22Zg#  
          8     0.48754161    -0.05649072 8MV=?  
    Change in Focus                :       0.215922 D}Z].c@ E  
          9     0.40357468    -0.14045766 't2"CPZ  
    Change in Focus                :       0.281783 FSC74N/  
         10     0.26315315    -0.28087919 [/6IEt3}B  
    Change in Focus                :      -1.048393 hK?uGt d?  
         11     0.26120585    -0.28282649 Xrc0RWXB8  
    Change in Focus                :       1.017611 A6= Um%T  
         12     0.24033815    -0.30369419 hK3?m.> "g  
    Change in Focus                :      -0.109292 1: XT r  
         13     0.37164046    -0.17239188 NJwcb=*  
    Change in Focus                :      -0.692430 Jk 0 ;<2j  
         14     0.48597489    -0.05805744 ^|(F|Z  
    Change in Focus                :      -0.662040 Z#%4QIz ?  
         15     0.21462327    -0.32940907 !Hxx6/  
    Change in Focus                :       1.611296 ',v -&1R  
         16     0.43378226    -0.11025008 Kb#py6  
    Change in Focus                :      -0.640081 ]& jXD=a"  
         17     0.39321881    -0.15081353 `#E1FB2M  
    Change in Focus                :       0.914906 PohG y  
         18     0.20692530    -0.33710703 9H`Q |7g(5  
    Change in Focus                :       0.801607 fMy7pXa_  
         19     0.51374068    -0.03029165 )L<NW{  
    Change in Focus                :       0.947293 PH^AT<U:T  
         20     0.38013374    -0.16389860 9Y3_.qa(.  
    Change in Focus                :       0.667010 glm29hF  
    M1-n  
    Number of traceable Monte Carlo files generated: 20 r1}YN<+,s  
    ez@`&cJ7  
    Nominal     0.54403234 H_un3x1  
    Best        0.54384387    Trial     2 GFB(c  
    Worst       0.18154684    Trial     4 [8v v[n/  
    Mean        0.35770970 )k&<D*5s  
    Std Dev     0.11156454  mR)Xq=  
    [2"a~o\  
    (Z fY/  
    Compensator Statistics: F2saGpGH  
    Change in back focus: TmxhP nJ~  
    Minimum            :        -1.354815 c_"]AhV~Mg  
    Maximum            :         1.611296 V>>"nf,YO  
    Mean               :         0.161872 |Ah'KpL8W  
    Standard Deviation :         0.869664 ?Id3#+-O  
    @FKm_q  
    90% >       0.20977951               W1dpKv  
    80% >       0.22748071               mmE\=i~  
    50% >       0.38667627               g 4G&  
    20% >       0.46553746               <lopk('7  
    10% >       0.50064115                .B_LQ;0:   
    ;'~U5Po8  
    End of Run. ]%>7OH'  
    hd^?mZ  
    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 M_lQ^7/  
    Uus%1hC%a  
    ^cs:S-s  
    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 4jbqV  
    [#hpWNez(>  
    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                 ^EtBo7^t  
    80% >       0.22748071                 ?|,dHqh{nM  
    50% >       0.38667627                 4gD;XNrV  
    20% >       0.46553746                 0n dk=V  
    10% >       0.50064115 @G'&7-(h*  
    p} }pq~EH/  
    最后这个数值是MTF值呢,还是MTF的公差? 0SS,fs<w3  
    9d kuvk}:  
    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???   =f~8"j  
    qe^d6  
    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???
    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  : x=I|O;"><  
    90% >       0.20977951                 CT0 ~  
    80% >       0.22748071                 wZnv*t_  
    50% >       0.38667627                 k.n-JS  
    20% >       0.46553746                 z)_h"y?H{%  
    10% >       0.50064115 }7HR<%< 7  
    ....... 0ZAT;eaB  
    b#[EkI 0@  
    5H^"  
    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   ;r3Xh)k;  
    Mode                : Sensitivities 9#MY(Hr  
    Sampling            : 2 oYR OGU  
    Nominal Criterion   : 0.54403234 _O;2.M%@  
    Test Wavelength     : 0.6328 9g~"Y[ ]  
    :406Oa  
    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? ~]V}wZt>h  
    ]9PQKC2&  
    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?
    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