| 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。 H9~%#&fF
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是根据这篇论文编的matlab代码。 fQQs b 5=i
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哪位大神指点一下 >:jM}*dnL
clear; z+k=|RMau
H=20; v\ %B
a=100; /bmXDDYH4
itheta=0; Ak6MPuBB-
i=1; x7.QL?qR.
for theta=0:0.0001:pi/2 Z cm<Fw
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005 ={`CH CI
itheta(i+1)=theta; hV-V eKjZ(
i=i+1; i,#k}CNu
end *#1y6^
end VT %
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R=30; Dn_"B0$lk
r=0; sTtX$&Qu
for i=1:a /mn-+u`K
r(i+1)=sqrt(R^2/a+r(i)^2); veUa|Bx.(v
end
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I(:,1)=sin(itheta); DH:GI1Yu>I
I(:,2)=cos(itheta); yB,{#nM>8
N=[0,1]; gB>imr#e&
P=[0,5]; g@~!kh,TH
O=[0,1]; ebN(05ZV
n=1.5896; 4M}|/?<Br
for i=1:a; 7G5y)Qb
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) ); HDmx@E.@
P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1); J 7BFk
?=
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!C"qK4[
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); #?{qlgv<p
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); Q2/MnM
end ;gDMl57PQ.
P(:,3)=0; S!;L F4VA
plot(P(:,1),P(:,2)); q,B3ru.?d
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[attachment=109396]
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