| 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。 *B*dWMh
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是根据这篇论文编的matlab代码。 FfS KE
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哪位大神指点一下 2EAY`}Rl6.
clear; b%_[\((
H=20; k6 2KZ5| D
a=100; < c!I\y
itheta=0; IEj=pI
i=1; -<Oy5N
for theta=0:0.0001:pi/2 yv+DM`0
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005 HUWC CVn&
itheta(i+1)=theta; ^v+7IFn
i=i+1; &60#y4
end 7nl
end >XU93 )CX
R=30; ^ 2<nn op
r=0; dk@j!-q^
for i=1:a g@s'-8}X^
r(i+1)=sqrt(R^2/a+r(i)^2); {!av3Pz\
end ) mG
I(:,1)=sin(itheta); @7z_f!'u
I(:,2)=cos(itheta); :/6gGU>pu
N=[0,1]; _usi~m
P=[0,5]; G
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O=[0,1]; |)pgUI2O[
n=1.5896; K[Ao_v2g
for i=1:a; jHx)q|2\
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) ); 1 GB
P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1); Zt{\<5j
O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2); $?Yw{%W
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); noSBwP| v*
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); ^hIKDc!.m
end k_A
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P(:,3)=0; F qH@i Z
plot(P(:,1),P(:,2)); $@}\T
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[attachment=109396]
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