| 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。 F.y_H#h
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是根据这篇论文编的matlab代码。 |Jx:#OM
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哪位大神指点一下 }R+#>P
clear; $MDmY4 \
H=20; }5PC53q
a=100; } OIe!
itheta=0; -sv%A7i
i=1; ,$t1LV;o=
for theta=0:0.0001:pi/2 3L==p`
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005 k
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itheta(i+1)=theta; -`5]%.E&8
i=i+1; 1@I#Fv
end W[I[Xg&
end vW.f`J,\D'
R=30; 02EX_tt),
r=0; mQVlE__ub
for i=1:a U~BR8]=G
r(i+1)=sqrt(R^2/a+r(i)^2); tOVTHx3E]
end ;rL>{UhG
I(:,1)=sin(itheta); 92Gfxld\
I(:,2)=cos(itheta); 4j0;okQWV'
N=[0,1]; =k d-rIBc
P=[0,5]; 7@O NCG
O=[0,1]; `&x>2F J
n=1.5896; ABoB=0.l
for i=1:a; i;~. kgtq4
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) ); O D5qPovsd
P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
3-{WFnA
O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2); ?i0u)< H
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); 6miXaAA8
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); Tr>_R%b K
end wG:RvgX}
P(:,3)=0; 5hEA/G
plot(P(:,1),P(:,2)); ? .B t.
@P0rNO %y
[attachment=109396]
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