| 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。 Ui?iMtDr
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是根据这篇论文编的matlab代码。 lT^/ 8Z<g
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哪位大神指点一下 w .VjGPp
clear; ,>+B>lbJ*
H=20; %>'Zy6C<j
a=100; iX%9$Bft<
itheta=0; =E.!Ff4~(
i=1; =xw+cs1,x
for theta=0:0.0001:pi/2
I'`90{I
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005 8Sxk[`qx\K
itheta(i+1)=theta; CS'LW;#[
i=i+1; bog3=Ig-
end -wa" &Q
end :%_\!FvS
R=30; C19}Y4r:
r=0; hT`fAn_
for i=1:a @A tJO >w
r(i+1)=sqrt(R^2/a+r(i)^2); 12VIP-ABK
end ) x+P9|
I(:,1)=sin(itheta); {o SdVRI
I(:,2)=cos(itheta); KFg q3snH
N=[0,1]; 8Kw,
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P=[0,5]; {p. ^E5&
O=[0,1]; 9>ajhFyOhX
n=1.5896; %oB0@ &!mS
for i=1:a; nll=Vd[
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) ); <?nz> vz
P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1); $Qz<:?D
O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2); }.a {;{y
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); L{&>,ww
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); Y'{}L@"t
end yg.o?eML
P(:,3)=0; ebn3r :IU-
plot(P(:,1),P(:,2)); uK] -m
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[attachment=109396]
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