[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 vMzR3@4e  
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然后添加了默认公差分析，基本没变 tFwQ /  
ex'd^y  
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然后运行分析的结果如下： 5Ag]1k{  
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Analysis of Tolerances oVoTnGNM6  
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File : E:\光学设计资料\zemax练习\f500.ZMX jA=uK6m  
Title: ]!YzbvoR  
Date : TUE JUN 21 2011 :b=`sUn<X+  
m f4@g05  
Units are Millimeters. J9/9
k  
All changes are computed using linear differences. ]_d(YHYf  
kC|tv{g#>  
Paraxial Focus compensation only. K_]LK  
Ip8 Ap$  
WARNING: Solves should be removed prior to tolerancing. &_" 3~:N8k  
l#:=zu  
Mnemonics: X%`8h_  
TFRN: Tolerance on curvature in fringes. WRVKh  
TTHI: Tolerance on thickness. :U?P~HI  
TSDX: Tolerance on surface decentering in x. wH|\;M{0V1  
TSDY: Tolerance on surface decentering in y. AKa{C f  
TSTX: Tolerance on surface tilt in x (degrees). e6
sL N  
TSTY: Tolerance on surface tilt in y (degrees). 4$IPz7  
TIRR: Tolerance on irregularity (fringes). 2(\>PN-  
TIND: Tolerance on Nd index of refraction. .vG6\U7  
TEDX: Tolerance on element decentering in x. +]uy  
TEDY: Tolerance on element decentering in y. jf/;`br  
TETX: Tolerance on element tilt in x (degrees). gQ?>%t]  
TETY: Tolerance on element tilt in y (degrees). px4Z  
WNm,r>6m  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 2
Q9s?C  
EHzU`('?[  
WARNING: Boundary constraints on compensators will be ignored. F{l,Tl"Jw  
}{iR+MX  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm /^#} \<;  
Mode                : Sensitivities R0. `2=  
Sampling            : 2 ,wX/cUyZ  
Nominal Criterion   : 0.54403234 t$\]
6RU  
Test Wavelength     : 0.6328 ?)]sfJG  
IH>+P]+3"3  
4`Fbl]Q   
Fields: XY Symmetric Angle in degrees j:<E=[Kl  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY diTzolY7  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 `awk@  
j1/J9F'  
Sensitivity Analysis: :&_@U$  
CZ]+B8Pl(x  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------|  |2n2  
Type                      Value      Criterion        Change          Value      Criterion        Change uO"@YX/  
Fringe tolerance on surface 1 Nkv2?o>l  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 nHZ 4):`  
Change in Focus                :      -0.000000                            0.000000 {jk {K6 }  
Fringe tolerance on surface 2 dZnq 96<:|  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 0CTI=<;  
Change in Focus                :       0.000000                            0.000000 X-n'?=  
Fringe tolerance on surface 3 z#,?*v  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 o &Nr5S  
Change in Focus                :      -0.000000                            0.000000 jRgv 8n
  
Thickness tolerance on surface 1 1 #EmZ{*  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 , / 4}CM  
Change in Focus                :       0.000000                            0.000000 D.?KgOZ  
Thickness tolerance on surface 2 60`y=!?f  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 tM@TT@.t~  
Change in Focus                :       0.000000                           -0.000000 oO= 6Kd+T  
Decenter X tolerance on surfaces 1 through 3 N18Zsdrp  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 C}+(L3Z  
Change in Focus                :       0.000000                            0.000000 Dhef|E<  
Decenter Y tolerance on surfaces 1 through 3 VaQ}XM  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ;| \Ojuf  
Change in Focus                :       0.000000                            0.000000 ;Vp&f%u+v  
Tilt X tolerance on surfaces 1 through 3 (degrees) Kx<bVK4"  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 y#x]?%m  
Change in Focus                :       0.000000                            0.000000 (F_#LeJ|  
Tilt Y tolerance on surfaces 1 through 3 (degrees) *a$z!Ma3h  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 2RM0ca_F  
Change in Focus                :       0.000000                            0.000000 Mb$&~!  
Decenter X tolerance on surface 1 hV=)T^Q  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 66z1_lA  
Change in Focus                :       0.000000                            0.000000 p&ZD1qa  
Decenter Y tolerance on surface 1 2Db[dk( ]  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 6J&L5E  
Change in Focus                :       0.000000                            0.000000 a nIdCOh  
Tilt X tolerance on surface (degrees) 1 I.(/j  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 _-^KqNyy  
Change in Focus                :       0.000000                            0.000000 4;&(  
Tilt Y tolerance on surface (degrees) 1 bNc=}^  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 vk[Km[(U'  
Change in Focus                :       0.000000                            0.000000 RJd55+h  
Decenter X tolerance on surface 2 ZEApE+m  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 fmloh1{4  
Change in Focus                :       0.000000                            0.000000 N %0F[sY6  
Decenter Y tolerance on surface 2 N$_Rzh"9rr  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 x:?1fvVR  
Change in Focus                :       0.000000                            0.000000 ,T1t`  
Tilt X tolerance on surface (degrees) 2 O<o_MZN  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 e#16,a-}o  
Change in Focus                :       0.000000                            0.000000 m3,]j\  
Tilt Y tolerance on surface (degrees) 2 Kb4u)~S:  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 =_v_#;h&  
Change in Focus                :       0.000000                            0.000000 uWMAXGL  
Decenter X tolerance on surface 3 >gVR5o  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 #M8"b]oh6  
Change in Focus                :       0.000000                            0.000000 hEEbH@b  
Decenter Y tolerance on surface 3 .\1XR  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ^
*Rrx  
Change in Focus                :       0.000000                            0.000000 ea7v:#O[S  
Tilt X tolerance on surface (degrees) 3 0~^opNR  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 V-I_SvWv\  
Change in Focus                :       0.000000                            0.000000 5N ' QG<jE  
Tilt Y tolerance on surface (degrees) 3 zXMIDrq  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 m2VF}% EIr  
Change in Focus                :       0.000000                            0.000000 IURi90Ir  
Irregularity of surface 1 in fringes rF 7EO%,  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 N5oao'7|A  
Change in Focus                :       0.000000                            0.000000 u^V`Ucd"R  
Irregularity of surface 2 in fringes Y+WOU._46I  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Vh
'H5v^  
Change in Focus                :       0.000000                            0.000000 HM--`RJ  
Irregularity of surface 3 in fringes YMJjO0  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ,=z8aiUu  
Change in Focus                :       0.000000                            0.000000 i}M&1
E  
Index tolerance on surface 1 3QGg;
  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 3pq&TYQU  
Change in Focus                :       0.000000                            0.000000 n;!t?jnf.  
Index tolerance on surface 2 P3@
[x  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 QbS w<V  
Change in Focus                :       0.000000                           -0.000000 | F:?  
Xt9?7J#\T  
Worst offenders: eK3J9;X  
Type                      Value      Criterion        Change [}d 3u!  
TSTY   2            -0.20000000     0.35349910    -0.19053324 +mV4T
y  
TSTY   2             0.20000000     0.35349910    -0.19053324 ggX'`bK  
TSTX   2            -0.20000000     0.35349910    -0.19053324 L42C<  
TSTX   2             0.20000000     0.35349910    -0.19053324 SAXjB;VH6  
TSTY   1            -0.20000000     0.42678383    -0.11724851 rWSw1(sAA  
TSTY   1             0.20000000     0.42678383    -0.11724851 U2+CL)al^  
TSTX   1            -0.20000000     0.42678383    -0.11724851 [)9bR1wh  
TSTX   1             0.20000000     0.42678383    -0.11724851 nvpdu)q<  
TSTY   3            -0.20000000     0.42861670    -0.11541563 d<: VoQM6M  
TSTY   3             0.20000000     0.42861670    -0.11541563 0$* z   
%n!s{5:F  
Estimated Performance Changes based upon Root-Sum-Square method: }%_x T  
Nominal MTF                 :     0.54403234 O^oFH OpFh  
Estimated change            :    -0.36299231 g4%x7#vz0  
Estimated MTF               :     0.18104003 ;>|:I(l;  
9k2HP]8=[{  
Compensator Statistics: d) G7U$z~  
Change in back focus:
o_os;  
Minimum            :        -0.000000 vNi7=3  
Maximum            :         0.000000 UHweV:(|T  
Mean               :        -0.000000 8|V6RgA%  
Standard Deviation :         0.000000 PX(Gx%s|  
h^34{pKDn  
Monte Carlo Analysis: Qh)@-r3  
Number of trials: 20 ].2q.7Yur  
s`GSc)AI  
Initial Statistics: Normal Distribution Alh%Z\  
+<@7x16  
  Trial       Criterion        Change 7P!/jawxb  
      1     0.42804416    -0.11598818 `h :&H,N  
Change in Focus                :      -0.400171 (!{_O_&  
      2     0.54384387    -0.00018847 1 dI  
Change in Focus                :       1.018470 wdoA>a?q  
      3     0.44510003    -0.09893230 pk(<],0]X  
Change in Focus                :      -0.601922 Q
Q1+uY  
      4     0.18154684    -0.36248550 56&s'  
Change in Focus                :       0.920681 HIi"zo=V  
      5     0.28665820    -0.25737414 '_@=9 \<  
Change in Focus                :       1.253875 d/Fjs0pt  
      6     0.21263372    -0.33139862 A CJmy2  
Change in Focus                :      -0.903878 QBY7ZT05Gt  
      7     0.40051424    -0.14351809 ObMsncn  
Change in Focus                :      -1.354815 t3v*P6  
      8     0.48754161    -0.05649072 `Z]a6@w~  
Change in Focus                :       0.215922 xg\M9&J  
      9     0.40357468    -0.14045766 k`2 K?9\  
Change in Focus                :       0.281783 EmG`ga)s  
     10     0.26315315    -0.28087919 m7^a4  
Change in Focus                :      -1.048393 E^#|1Kpq  
     11     0.26120585    -0.28282649 r/:s2oQ  
Change in Focus                :       1.017611 J'^BxN&  
     12     0.24033815    -0.30369419 !W]># Pm  
Change in Focus                :      -0.109292 3 +BPqhzf  
     13     0.37164046    -0.17239188 9j$ OU@N 8  
Change in Focus                :      -0.692430 (!DH'2I[  
     14     0.48597489    -0.05805744 CG$S?  
Change in Focus                :      -0.662040 ?GB($D=Y'&  
     15     0.21462327    -0.32940907 _(J- MCY\  
Change in Focus                :       1.611296 DTn=WGm)  
     16     0.43378226    -0.11025008 ^=E4~
22q  
Change in Focus                :      -0.640081 *Rr,ii  
     17     0.39321881    -0.15081353 %v :a  
Change in Focus                :       0.914906 }+i ZY\t  
     18     0.20692530    -0.33710703 "`C|;\w  
Change in Focus                :       0.801607 H,KU!1p  
     19     0.51374068    -0.03029165 i LK8Wnrq  
Change in Focus                :       0.947293 N, ;'oL+  
     20     0.38013374    -0.16389860 "p2 $R*ie  
Change in Focus                :       0.667010 k$k
(g  
)0fQ(3oOg  
Number of traceable Monte Carlo files generated: 20 k[y{&f,  
-H'_%~OV(  
Nominal     0.54403234 wC'KI8-  
Best        0.54384387    Trial     2 J Y %B:  
Worst       0.18154684    Trial     4 7b:oz3?PI  
Mean        0.35770970 L.l%EcW=,  
Std Dev     0.11156454 #e+%;5\  
~=Er= 0  
u)R>ozER  
Compensator Statistics: NVeb,Pf  
Change in back focus: I)_072^O  
Minimum            :        -1.354815 vlp]!7v  
Maximum            :         1.611296 .eK1xwhJ  
Mean               :         0.161872 #x)G2T'?  
Standard Deviation :         0.869664 `
Ft`8=(  
)8st  
90% >       0.20977951               \C/`?"4w  
80% >       0.22748071               e%(zjCA  
50% >       0.38667627               :v1'(A1t  
20% >       0.46553746               nU)}!` E  
10% >       0.50064115                D#W{:_f  
V\!FD5%  
End of Run. <)?H98S  
?n\~&n'C  
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 .Z'CqBr[:  
}@!d(U*  
q6\z]8)  
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 (@uQ>dR:  
)&se/x+  
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                 xfos>|0N  
80% >       0.22748071                 ;G;vpl  
50% >       0.38667627                 e_\4(4x  
20% >       0.46553746                 vb5tyY0c  
10% >       0.50064115 MfCu\[qOz  
lv&<kYWY  
最后这个数值是MTF值呢，还是MTF的公差？ qB<D'h7  
9)aXLM4Y  
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？？？   6.KR(V  
? Yy[8_(tN  
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  : #N[nvIi}  
90% >       0.20977951                 pWO,yxr:  
80% >       0.22748071                 E`u=$~K  
50% >       0.38667627                 .!l#z|/x  
20% >       0.46553746                 2Z\6xb|u  
10% >       0.50064115 5?kF'yksR  
....... "_}Hzpy5k  

V78QV3  
C8-4 m68"  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   n;xtUw6\  
Mode                : Sensitivities XB50>??NE  
Sampling            : 2 2%rAf8=  
Nominal Criterion   : 0.54403234 6wqq"6w  
Test Wavelength     : 0.6328 q/XZb@rt  
NyeGa  
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？ ,}=x8Xxr  
kC!7<%(  
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