| 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。 =M}tet
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是根据这篇论文编的matlab代码。 m#R"~ >
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哪位大神指点一下 ; <mcvm
clear; EZ zR"W/
H=20; ~d3@x\I?
a=100; u+
hRaI;v
itheta=0; ^)GaVL^"5
i=1; P{BW^kAdH
for theta=0:0.0001:pi/2 8B]\;m
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005 *]}F=dtR k
itheta(i+1)=theta; ! * KQ2#e
i=i+1; 3)L#V
.
end *B \ @L
end !
2knS S
R=30; }K`KoM
r=0; 8)1=5 n
for i=1:a 5 UOqS#"0
r(i+1)=sqrt(R^2/a+r(i)^2); >I<}:=
end oO`a {n-
I(:,1)=sin(itheta); =HJ7tele
I(:,2)=cos(itheta); )Vrp<"v
N=[0,1]; Yyd]s\W
P=[0,5]; *4LRdLMn
O=[0,1]; zGNW5S9G
n=1.5896; )_n(u3'
for i=1:a; )MLbE-@
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) ); 4mKH
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P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1); nP<u. {q
L
O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2); IW>~Yl?
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); I{ki))F
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); ^^*L;b>I
end $} 0!dR2
P(:,3)=0; lrwQ
>N
plot(P(:,1),P(:,2)); mdQe)>
a7uL {*ZR
[attachment=109396]
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