[讨论]公差分析结果的疑问 [复制链接]

我现在在初学zemax的公差分析，找了一个双胶合透镜 cqr!*  
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图片:1.JPG

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然后添加了默认公差分析，基本没变 2#C!40j&\  
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图片:2.jpg

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然后运行分析的结果如下： MX6*waQ-<  
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Analysis of Tolerances No<2+E!  
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File : E:\光学设计资料\zemax练习\f500.ZMX q% )Y  
Title: |gx{un`  
Date : TUE JUN 21 2011 L7_Mg{  
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Units are Millimeters. qfvd(w  
All changes are computed using linear differences. akgXI^K  
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Paraxial Focus compensation only. I
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WARNING: Solves should be removed prior to tolerancing. tc\LK_@$/F  
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Mnemonics: n'73DApW  
TFRN: Tolerance on curvature in fringes. +cM;d4  
TTHI: Tolerance on thickness. xT{qeHeZ9,  
TSDX: Tolerance on surface decentering in x. #nX0xV5=  
TSDY: Tolerance on surface decentering in y. e<YC=67n)  
TSTX: Tolerance on surface tilt in x (degrees). >FFZ8=  
TSTY: Tolerance on surface tilt in y (degrees). s ,\w00-:  
TIRR: Tolerance on irregularity (fringes). X_+`7yCi"x  
TIND: Tolerance on Nd index of refraction. mJ<rzX  
TEDX: Tolerance on element decentering in x. NwD*EuPF:  
TEDY: Tolerance on element decentering in y. Hx2UDHF  
TETX: Tolerance on element tilt in x (degrees). oh%T4$  
TETY: Tolerance on element tilt in y (degrees). < Upn~tH  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. u!oHP  
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WARNING: Boundary constraints on compensators will be ignored. ./jkY7 k  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm I/jMe'Kp  
Mode                : Sensitivities 8|{:N>7  
Sampling            : 2 1%^U=[#2`  
Nominal Criterion   : 0.54403234 lg&"=VXx51  
Test Wavelength     : 0.6328 ?0hk~8c  
7 ;|jq39  
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Fields: XY Symmetric Angle in degrees FT/H~|Z>  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY jIv+=b#oT  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 f|WNPFQ$x  
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Sensitivity Analysis: f,d @*E  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| !w]!\H  
Type                      Value      Criterion        Change          Value      Criterion        Change s) u{A  
Fringe tolerance on surface 1 :IV4]`  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 D(Zux8l  
Change in Focus                :      -0.000000                            0.000000 I|m fr{  
Fringe tolerance on surface 2 5ap}(bO  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 )J<Li!3  
Change in Focus                :       0.000000                            0.000000 knh^q;q*  
Fringe tolerance on surface 3 LT!.M m  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 u]@``Zb|  
Change in Focus                :      -0.000000                            0.000000 G'

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Thickness tolerance on surface 1 A;1<P5lo  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 (NOAHV0
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Change in Focus                :       0.000000                            0.000000 r-^
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Thickness tolerance on surface 2 yC =5/wy`  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ScQJsFE6  
Change in Focus                :       0.000000                           -0.000000 ]n${j/x  
Decenter X tolerance on surfaces 1 through 3 8*=N\'m],  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 rVzjLk
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Change in Focus                :       0.000000                            0.000000 gmLGK1  
Decenter Y tolerance on surfaces 1 through 3 f";70}_  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 "}*P9-%  
Change in Focus                :       0.000000                            0.000000 ;dRTr *  
Tilt X tolerance on surfaces 1 through 3 (degrees) ,COSpq]6  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 SLSJn))@!  
Change in Focus                :       0.000000                            0.000000 =:P9 $  
Tilt Y tolerance on surfaces 1 through 3 (degrees) fxI>FhU_  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 \s`'3y  
Change in Focus                :       0.000000                            0.000000 F:n(y
XA  
Decenter X tolerance on surface 1 <po.:c Ce  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671  v#IW;Rj8  
Change in Focus                :       0.000000                            0.000000 92]>"  
Decenter Y tolerance on surface 1 yi"V'Us  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Z?oFee!4
 
Change in Focus                :       0.000000                            0.000000 cm%QV?  
Tilt X tolerance on surface (degrees) 1 Z7JI4"  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 MkC25  
Change in Focus                :       0.000000                            0.000000 tB&D~M6[  
Tilt Y tolerance on surface (degrees) 1 6NZ3(   
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 RxAWX?9Z  
Change in Focus                :       0.000000                            0.000000 Rde#=>@V  
Decenter X tolerance on surface 2 /jC0[%~jV  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 1'"o; a]k/  
Change in Focus                :       0.000000                            0.000000 !a[ voUS  
Decenter Y tolerance on surface 2 N12K*P[!  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Q6_!I42Y`  
Change in Focus                :       0.000000                            0.000000 AVOqW0Z+y  
Tilt X tolerance on surface (degrees) 2 r5(OH3  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 N1\u~%AT"  
Change in Focus                :       0.000000                            0.000000 g4=}].  
Tilt Y tolerance on surface (degrees) 2 >9esZ
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TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 uWG'AmK_#E  
Change in Focus                :       0.000000                            0.000000 tU!"CX  
Decenter X tolerance on surface 3 xh#ef=Bw  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 q_g'4VZv  
Change in Focus                :       0.000000                            0.000000 pHsp]a  
Decenter Y tolerance on surface 3 |5V#&e\ES  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 +&O[}%W  
Change in Focus                :       0.000000                            0.000000 "}\z7^.W>  
Tilt X tolerance on surface (degrees) 3 }{ pNasAU  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Um9!<G=;  
Change in Focus                :       0.000000                            0.000000
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Tilt Y tolerance on surface (degrees) 3 hDl& KE  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Al$"k[-Uin  
Change in Focus                :       0.000000                            0.000000 KB&t31aq  
Irregularity of surface 1 in fringes xaoaZ3Ko  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 b^
y#.V.|k  
Change in Focus                :       0.000000                            0.000000 BpDf4
)|  
Irregularity of surface 2 in fringes NrgN{6u;  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 AQbbIngo  
Change in Focus                :       0.000000                            0.000000 *Mg=IEu-6[  
Irregularity of surface 3 in fringes Vd)iv\a  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 NqkRR$O  
Change in Focus                :       0.000000                            0.000000 6}L[7~1  
Index tolerance on surface 1 Zul]ekv  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 |42E'zH&  
Change in Focus                :       0.000000                            0.000000 .<u<!fL2  
Index tolerance on surface 2 gpHI)1i'H  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 6.Ef
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Change in Focus                :       0.000000                           -0.000000 >pv~$  
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Worst offenders: gEO#-tMjOQ  
Type                      Value      Criterion        Change  3i?{E^  
TSTY   2            -0.20000000     0.35349910    -0.19053324  _"%d9B  
TSTY   2             0.20000000     0.35349910    -0.19053324 )}~k7bb}Y  
TSTX   2            -0.20000000     0.35349910    -0.19053324 [k@D}p x  
TSTX   2             0.20000000     0.35349910    -0.19053324 A}~hc&J  
TSTY   1            -0.20000000     0.42678383    -0.11724851 uTbI\iq  
TSTY   1             0.20000000     0.42678383    -0.11724851 +;Q&  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ^(N+s?  
TSTX   1             0.20000000     0.42678383    -0.11724851 }-V .upl  
TSTY   3            -0.20000000     0.42861670    -0.11541563 mmwwz  
TSTY   3             0.20000000     0.42861670    -0.11541563 BtBy.bR  
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Estimated Performance Changes based upon Root-Sum-Square method: AjAmV hq  
Nominal MTF                 :     0.54403234 q_OIzZ@  
Estimated change            :    -0.36299231 $Fc*^8$ryC  
Estimated MTF               :     0.18104003 p % 3B^  
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Compensator Statistics: MO9}I
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Change in back focus: #MHnJ  
Minimum            :        -0.000000 ,{%/$7)  
Maximum            :         0.000000 +@Fy) {C7  
Mean               :        -0.000000 >kz5
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Standard Deviation :         0.000000 /B|#GJ\\3  
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Monte Carlo Analysis: +3si=x\=/  
Number of trials: 20 WYRTt2(+%  
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Initial Statistics: Normal Distribution gLl?e8[F  
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  Trial       Criterion        Change u\^<V)  
      1     0.42804416    -0.11598818 m ~fqZK  
Change in Focus                :      -0.400171 7g  
      2     0.54384387    -0.00018847 u5V<f;  
Change in Focus                :       1.018470 `r_qvrC  
      3     0.44510003    -0.09893230 0Hff/~J  
Change in Focus                :      -0.601922 !ye%A&  
      4     0.18154684    -0.36248550 duXv [1  
Change in Focus                :       0.920681 6\4oHRJC  
      5     0.28665820    -0.25737414 %lv2
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Change in Focus                :       1.253875 w]tv<U={  
      6     0.21263372    -0.33139862 n_$l
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Change in Focus                :      -0.903878 eJ'2CM6  
      7     0.40051424    -0.14351809 f@\ k_  
Change in Focus                :      -1.354815 "}7K>|a  
      8     0.48754161    -0.05649072 TjD`<k  
Change in Focus                :       0.215922 75!IzJG  
      9     0.40357468    -0.14045766 b[GZ sXD-  
Change in Focus                :       0.281783 v}xz`]MW<,  
     10     0.26315315    -0.28087919 >bz}IcZP  
Change in Focus                :      -1.048393 wA.YEI|CSj  
     11     0.26120585    -0.28282649 T-fW[][&$  
Change in Focus                :       1.017611
(}4tj4d  
     12     0.24033815    -0.30369419 ;lW0p8  
Change in Focus                :      -0.109292 ``w,CP ?  
     13     0.37164046    -0.17239188 zoC/Hm  
Change in Focus                :      -0.692430 DI!NP;E  
     14     0.48597489    -0.05805744 G{+sC2  
Change in Focus                :      -0.662040 Ln[R}qD  
     15     0.21462327    -0.32940907 % eW>IN]5  
Change in Focus                :       1.611296 <G2;nvRr  
     16     0.43378226    -0.11025008 vq(@B  
Change in Focus                :      -0.640081 0Rtqq
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     17     0.39321881    -0.15081353 !fzqpl\ze  
Change in Focus                :       0.914906 eW\7X%I  
     18     0.20692530    -0.33710703 wF?THkdFo  
Change in Focus                :       0.801607 B wtD!de$  
     19     0.51374068    -0.03029165 T>vHZZiO  
Change in Focus                :       0.947293 -M%n<,XN0  
     20     0.38013374    -0.16389860 U+~0m!|4  
Change in Focus                :       0.667010 .Ks&r  
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Number of traceable Monte Carlo files generated: 20 W zy8  
*ubLuC+b  
Nominal     0.54403234 ofcoNLX5c  
Best        0.54384387    Trial     2 +;:i,`Lmg  
Worst       0.18154684    Trial     4 1
ReO.Dd`R  
Mean        0.35770970 aina6@S  
Std Dev     0.11156454 !?O:%QG  
BI4p3-  
q/70fR7{v  
Compensator Statistics: :ozHuHJ#  
Change in back focus: 7" Dw4}T  
Minimum            :        -1.354815 y ?4|jN  
Maximum            :         1.611296 ;oob TW{  
Mean               :         0.161872 78dmXOZ'_h  
Standard Deviation :         0.869664 (tyo4Tz1  
Pa0tf:  
90% >       0.20977951               1i bQ'bZ  
80% >       0.22748071               il5WLi;{  
50% >       0.38667627               Rp}6}4=d  
20% >       0.46553746               s) V7$D  
10% >       0.50064115                J>!p^|S{  
'(^p$=3|@D  
End of Run. `j_R ?mY  
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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 (;~[}"  

图片:3.JPG

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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 *7BY$q  
KW+^9&lA  
不吝赐教

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？

90% >       0.20977951                 q.Z0Q  
80% >       0.22748071                 w$61+KHK  
50% >       0.38667627                 ;h/Y9uYn  
20% >       0.46553746                 .Ddl.9p5  
10% >       0.50064115 Gp32\^H|<  
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最后这个数值是MTF值呢，还是MTF的公差？ \f /<#'  
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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？？？   ^B1vvb  
nqiy)ZN#R  
怎么没人啊，大家讨论讨论吗

没有人啊？？？

引用第2楼sansummer于2011-06-22 08:56发表的  : +TUtVG  
90% >       0.20977951                 4(B,aU>y  
80% >       0.22748071                 b?H
W6Kfc  
50% >       0.38667627                 3n6_
yK+D  
20% >       0.46553746                 =;@5Ue J  
10% >       0.50064115 gDAA>U3|$  
....... UN,@K9  

2
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V=E9*$b]  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   8$3Tu"+;  
Mode                : Sensitivities )+cP8$n6L  
Sampling            : 2 . 6Bz48*  
Nominal Criterion   : 0.54403234 3G5i+9Nt.L  
Test Wavelength     : 0.6328 z@<`]  
M;3uG/E\  
波长632.8nm 时 mtf 是 0.54403234  没达到0.6

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？ SDdK5@1O4o  
,bJZs-P0  
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？

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

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？

恩，多多尝试