[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 H:1F=$0I9  
6Vu??qBy  

图片:1.JPG


k|_ >I  
cz>`$Zz  
然后添加了默认公差分析，基本没变 !G~\9  
Me,AE^pgL'  

图片:2.jpg

=)6|lz^  
97!VH>MX  
然后运行分析的结果如下： uUG&At  
C%Op[H3  
Analysis of Tolerances n lvDMZ  
~Oj-W6-+&,  
File : E:\光学设计资料\zemax练习\f500.ZMX *UG=dl#F#  
Title: f7]C1!]  
Date : TUE JUN 21 2011 ;}4e+`fF|  
$J:~jY/J  
Units are Millimeters. CH h6Mnw  
All changes are computed using linear differences. Y2p~chx9  
MdNV3:[\  
Paraxial Focus compensation only. BtWm ZaKi  
kObgo
MT<[  
WARNING: Solves should be removed prior to tolerancing. Vuo 8[h>  
L@5g#mSl  
Mnemonics: PmE2T\{s!  
TFRN: Tolerance on curvature in fringes. m4T`Tg#P  
TTHI: Tolerance on thickness. !}uev  
TSDX: Tolerance on surface decentering in x.
myY@Wp  
TSDY: Tolerance on surface decentering in y. Uw_z9ZL  
TSTX: Tolerance on surface tilt in x (degrees). h5#V,$  
TSTY: Tolerance on surface tilt in y (degrees). .l&<-l;UQ  
TIRR: Tolerance on irregularity (fringes). Ne,u\q3f  
TIND: Tolerance on Nd index of refraction. p>]2o\["  
TEDX: Tolerance on element decentering in x. W>7o ec  
TEDY: Tolerance on element decentering in y. Vt,"5c  
TETX: Tolerance on element tilt in x (degrees). >*mLbp"  
TETY: Tolerance on element tilt in y (degrees). HV6'0_R0  
_\xd]~ELj  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. =l9H]`T/  
80ms7 B  
WARNING: Boundary constraints on compensators will be ignored. GwVSRI:[N  
C,m o4,Q  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm jG3i )ALx  
Mode                : Sensitivities 7^:0?Q  
Sampling            : 2 Ijj]_V{,  
Nominal Criterion   : 0.54403234 u kKp,1xz  
Test Wavelength     : 0.6328 [P_1
a`b  
7[ra#>e8'  
7e-l`]  
Fields: XY Symmetric Angle in degrees
Y|iALrx  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY $r=Ud >  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 FVcooV  
^^Tu/YC9x  
Sensitivity Analysis: Ot} E  
=#<TE~n2(  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| 3l@={Ts  
Type                      Value      Criterion        Change          Value      Criterion        Change AiO29<  
Fringe tolerance on surface 1 C[O \aW  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 q,a|lH  
Change in Focus                :      -0.000000                            0.000000 l0$ +)FKd  
Fringe tolerance on surface 2 ;0VE*  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 =p)Wxk  
Change in Focus                :       0.000000                            0.000000 r'q9N  
Fringe tolerance on surface 3 Q4MTedj1H  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 93d ht  
Change in Focus                :      -0.000000                            0.000000 Q04iuhDO:  
Thickness tolerance on surface 1 kw!1]N  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 nNFZ77lg  
Change in Focus                :       0.000000                            0.000000 $u9y H Z  
Thickness tolerance on surface 2 { O*maE"  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 HJ*W3Mg  
Change in Focus                :       0.000000                           -0.000000 ~WJEH#  
Decenter X tolerance on surfaces 1 through 3 vF=d`T<  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 %!HmtpS  
Change in Focus                :       0.000000                            0.000000 J,E'F!{  
Decenter Y tolerance on surfaces 1 through 3 @3K 4,s  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 of^N4  
Change in Focus                :       0.000000                            0.000000 'qhA4W9  
Tilt X tolerance on surfaces 1 through 3 (degrees) (v^L2Po  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314
.;n<k  
Change in Focus                :       0.000000                            0.000000 Ee##:I[z  
Tilt Y tolerance on surfaces 1 through 3 (degrees) |T9p#) ec2  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 iCIu]6  
Change in Focus                :       0.000000                            0.000000 ~J6c1jG  
Decenter X tolerance on surface 1 dOe|uQXyD  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 #IP<4"Hf  
Change in Focus                :       0.000000                            0.000000 '+|{4-V  
Decenter Y tolerance on surface 1 $N=A,S  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ![iAALPNl  
Change in Focus                :       0.000000                            0.000000 !_cT_ WHty  
Tilt X tolerance on surface (degrees) 1 cV5Lp4wY?  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 t\]CdH`+  
Change in Focus                :       0.000000                            0.000000 o=2y`Eq  
Tilt Y tolerance on surface (degrees) 1 xgtdmv%  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Tp`by 1s  
Change in Focus                :       0.000000                            0.000000 ^6ZA2-f/<8  
Decenter X tolerance on surface 2 n}yqpW!%n  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 b#.hw2?a`  
Change in Focus                :       0.000000                            0.000000 `W8GfbL  
Decenter Y tolerance on surface 2 )=X8kuB~  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Y2w 9]:J  
Change in Focus                :       0.000000                            0.000000 W]n%$a  
Tilt X tolerance on surface (degrees) 2 ;{Y|n_  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 +MeEy{;  
Change in Focus                :       0.000000                            0.000000 `{/z\  
Tilt Y tolerance on surface (degrees) 2 BjJ$I^  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 <vA^%D<\~  
Change in Focus                :       0.000000                            0.000000 ]RQQg,|D  
Decenter X tolerance on surface 3 lBL;aTzo  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 o;\0xuM@  
Change in Focus                :       0.000000                            0.000000 BRV /7ao="  
Decenter Y tolerance on surface 3 LC\Ys\/,U  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Q4Q*5>  
Change in Focus                :       0.000000                            0.000000 `yHV10  
Tilt X tolerance on surface (degrees) 3 Ni{(=&*=  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 'd1E~A  
Change in Focus                :       0.000000                            0.000000 +tOBt("5/  
Tilt Y tolerance on surface (degrees) 3 EZc!QrY  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 e0*',  
Change in Focus                :       0.000000                            0.000000 :*6tbUp  
Irregularity of surface 1 in fringes >OwVNG  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 *#frbV?;  
Change in Focus                :       0.000000                            0.000000 7Z"mVh}  
Irregularity of surface 2 in fringes M\8FjJ>9  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 E'&UWDh  
Change in Focus                :       0.000000                            0.000000 ;vF8V`f  
Irregularity of surface 3 in fringes ?ae:
9ZcH  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 VA)3=8
2n  
Change in Focus                :       0.000000                            0.000000 yGH'|`  
Index tolerance on surface 1 ((Ec:(:c  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 _4rb7"b1  
Change in Focus                :       0.000000                            0.000000 o'%F*>#v  
Index tolerance on surface 2 Sy'/%[+goJ  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 PT|^RF%fT  
Change in Focus                :       0.000000                           -0.000000 Og
S6#X  
OsAXHjX}  
Worst offenders: -(qoz8H5  
Type                      Value      Criterion        Change X c,UR.  
TSTY   2            -0.20000000     0.35349910    -0.19053324 -^$CGRE6A  
TSTY   2             0.20000000     0.35349910    -0.19053324 <{YP=WYW  
TSTX   2            -0.20000000     0.35349910    -0.19053324 @|%t<{y^I  
TSTX   2             0.20000000     0.35349910    -0.19053324 djPr 4Nog  
TSTY   1            -0.20000000     0.42678383    -0.11724851 bu%@1:l  
TSTY   1             0.20000000     0.42678383    -0.11724851 (OYR, [*  
TSTX   1            -0.20000000     0.42678383    -0.11724851 =q^o6{d0"  
TSTX   1             0.20000000     0.42678383    -0.11724851 C1|e1  
TSTY   3            -0.20000000     0.42861670    -0.11541563 X`:(-3T  
TSTY   3             0.20000000     0.42861670    -0.11541563 l?a(=  
^;NM'Z  
Estimated Performance Changes based upon Root-Sum-Square method: q!""pr<n  
Nominal MTF                 :     0.54403234 %zd1\We  
Estimated change            :    -0.36299231 u-pE ;|  
Estimated MTF               :     0.18104003 g84~d(\?  
*2 4P T7  
Compensator Statistics: +sE81B  
Change in back focus: Nb#E+\q  
Minimum            :        -0.000000 E`iT>+LG<  
Maximum            :         0.000000 5 &-fX:/  
Mean               :        -0.000000 /zuU  
Standard Deviation :         0.000000 gJ
c5Y  
gO4J[_  
Monte Carlo Analysis: 23pHB
|X  
Number of trials: 20 vp4!p~C{  
A]BG*  
Initial Statistics: Normal Distribution 5xLuuKG  
7SXi#{  
  Trial       Criterion        Change w^p 'D{{  
      1     0.42804416    -0.11598818 i{T0[\4  
Change in Focus                :      -0.400171 kdQ=%  
      2     0.54384387    -0.00018847 QCa$<~c  
Change in Focus                :       1.018470 6O$OM  
      3     0.44510003    -0.09893230 }N2T/U  
Change in Focus                :      -0.601922 mmTc.xh  
      4     0.18154684    -0.36248550 Puily9#  
Change in Focus                :       0.920681 e@Z(z^V  
      5     0.28665820    -0.25737414 ;TM
H.E,h:  
Change in Focus                :       1.253875 %nF6n:|:  
      6     0.21263372    -0.33139862 /qo.Z  
Change in Focus                :      -0.903878 eAu3,qoM  
      7     0.40051424    -0.14351809 = Yh>5A  
Change in Focus                :      -1.354815 &{x5 |$SD  
      8     0.48754161    -0.05649072 Z?XE~6aP>  
Change in Focus                :       0.215922 (IIOKx_  
      9     0.40357468    -0.14045766 }v0oFY$u`H  
Change in Focus                :       0.281783 8
cfxKUS  
     10     0.26315315    -0.28087919 SG8|xoL  
Change in Focus                :      -1.048393 BA A)IQF  
     11     0.26120585    -0.28282649 @5acTYQ  
Change in Focus                :       1.017611 7,j}]  
     12     0.24033815    -0.30369419 Nypa,_9}  
Change in Focus                :      -0.109292 ~6
kEpa  
     13     0.37164046    -0.17239188 zg)Z2?K|;u  
Change in Focus                :      -0.692430 x?va26FV  
     14     0.48597489    -0.05805744 ["MF-tQ5  
Change in Focus                :      -0.662040 rbO9NRg>  
     15     0.21462327    -0.32940907 9i yNR!  
Change in Focus                :       1.611296 PM7*@~.  
     16     0.43378226    -0.11025008 1f~unb\Gg  
Change in Focus                :      -0.640081 T1M4@j  
     17     0.39321881    -0.15081353 p!|Wp  
Change in Focus                :       0.914906  #XQEfa  
     18     0.20692530    -0.33710703 BGLJ>z
kq  
Change in Focus                :       0.801607 d=xU f`^  
     19     0.51374068    -0.03029165 -zN*2T  
Change in Focus                :       0.947293 IZi1N  
     20     0.38013374    -0.16389860 6Nj\N oS  
Change in Focus                :       0.667010 s$&:F4=?  
A$;U*7TJuO  
Number of traceable Monte Carlo files generated: 20 FGzB7w#  
<[8at6;  
Nominal     0.54403234 1 c3gHc7{t  
Best        0.54384387    Trial     2 rzLpVpTaz  
Worst       0.18154684    Trial     4 c:>&Bg&,6T  
Mean        0.35770970 Ad9'q!_en  
Std Dev     0.11156454 ,kpkXK  
vbmi_[,U  
>y(;k|
-$  
Compensator Statistics: (pREo/T  
Change in back focus: jXSo{  
Minimum            :        -1.354815 A%k@75V@  
Maximum            :         1.611296 8JJqEkQ  
Mean               :         0.161872 +]Po!bN@@  
Standard Deviation :         0.869664 Z8z.Xn  
S'9T>&<Kn  
90% >       0.20977951               U;`N:~|p#  
80% >       0.22748071               P"XF|*^U  
50% >       0.38667627               "n}J
6  
20% >       0.46553746               Al5E  
10% >       0.50064115                PUuxKW}  
F7Mf>."  
End of Run. k9~NIvnB`  
;Lu%v%BM  
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 i`z1if6O  

图片:3.JPG

brl(7_2  
/v U$62KA  
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 jdK~]eld=  
0x4Xs  
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                 ?3D|{  
80% >       0.22748071                 N7Kq$G2O  
50% >       0.38667627                 I<`K;El'  
20% >       0.46553746                 %PRG;kR  
10% >       0.50064115 P"Lk(gY  
#` Q3Z}C  
最后这个数值是MTF值呢，还是MTF的公差？ X;lL$  
=iW!Mq  
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？？？   'r~,~AI  
sD H^l)4h  
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.d"i  
90% >       0.20977951                 &10l80vj  
80% >       0.22748071                 7Qdf#DG  
50% >       0.38667627                 8;PS>9<  
20% >       0.46553746                 Cws;6i*=@  
10% >       0.50064115 L hp  
....... f^JiaU4 [  

m(>MP/  
(g"
{A  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   4nsc`Hu  
Mode                : Sensitivities 1Kjqs)p^  
Sampling            : 2 45.<eWH$*(  
Nominal Criterion   : 0.54403234 A<h^.{  
Test Wavelength     : 0.6328 Vc[aNpE  
U g:  
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？ 3"BSP3/[l  
MzFFWk  
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