| chao183 |
2021-10-21 21:33 |
用matlab计算均匀照度的透镜自由曲线后，为什么用light tools模拟照度却不均匀
light tools模拟时都是中心暗，周围有亮圆环。模拟光源为朗伯点光源。 |`k
.y]9
]:]H:U]p
[attachment=109397] Oft arD
e'*HS7g
是根据这篇论文编的matlab代码。 R"Liz3Vl%
'vV$]/wBF
[attachment=109395] `NRH9l>B7
8 3~ i:+;
哪位大神指点一下 l U]un&[N
clear; FjfN3#qlg
H=20; @~
Dh'w2q
a=100; = v~1qWX
itheta=0; 8ip7^
i=1; c{#yx_)V&
for theta=0:0.0001:pi/2 *O$CaAr\s
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005 D>L2o88
itheta(i+1)=theta; `g ''rfk}
i=i+1; k8nLo.O
end 8ovM\9qT
end jn%kG ~]'Q
R=30; E|EgB33S
r=0; H!IshZfktn
for i=1:a 5A eQQU
r(i+1)=sqrt(R^2/a+r(i)^2); sRHA."A!8
end 0'Z\O
I(:,1)=sin(itheta); H[Q_hY[>V
I(:,2)=cos(itheta); 7^TV~E#
N=[0,1]; 5`[n8mU
P=[0,5]; 5~
' Ie<Y_
O=[0,1]; 's
x\P[a
n=1.5896; we7c`1E
for i=1:a; %GEJnJ
P(i+1,1)=( N(i,1)*P(i,1) + N(i,2)*P(i,2) ) / ( N(i,1) + N(i,2)*I(i+1,2)/I(i+1,1) ); @ez Tbc3
P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1); O09ke-lC
O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2); ,{eU P0 ]
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); gYop--\14]
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); h~Q)Uy5N(D
end {U!St@
P(:,3)=0; O;Y:uHf
plot(P(:,1),P(:,2)); KLQTKMNv
bF}V4"d,B3
[attachment=109396]
|
|
