| 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。 -}PD0Pzg;=
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是根据这篇论文编的matlab代码。 \A keC 6[D
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哪位大神指点一下 |Z# ) 1K
clear; 0y2iS' t
H=20; 2$\Du9+
a=100; vJmE }
itheta=0; <bIAq 8
i=1; X
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for theta=0:0.0001:pi/2 B7N?"'$i
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
tGv4 S\
itheta(i+1)=theta; (p^q3\
i=i+1; ;t [<!
end _U#u e
end 8%vk"h:u:
R=30; J|,| *t
r=0; Jq /([
for i=1:a wU ?2aXY
r(i+1)=sqrt(R^2/a+r(i)^2); i#(T?=VPcy
end C O 5?UgA
I(:,1)=sin(itheta); j Dy
I(:,2)=cos(itheta); .NwHr6/s*
N=[0,1]; mw?,oiT,)
P=[0,5]; |w:7).P
O=[0,1]; <@@.~Qm'
n=1.5896; J&{E
for i=1:a; nJA\P1@m
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) ); <7?MutHM-
P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1); Y7!,s-v4W
O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2); R &T(S
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); LxsB.jb-
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); bWjW_$8
end -zG/@.
P(:,3)=0; u=R F6V|
plot(P(:,1),P(:,2)); s.Yyw y
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[attachment=109396]
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