| 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。 +g7]ga
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[attachment=109397] v{|y,h&]a
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是根据这篇论文编的matlab代码。 @OT $* Qh
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哪位大神指点一下 IFew3!{\
clear; ]5QXiF8`
H=20; d9S?dx
a=100; ,.( :b82$
itheta=0; E"p _!! 1
i=1; HLqN=vE6
for theta=0:0.0001:pi/2 1 +-Go}I
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005 qzv ht4
itheta(i+1)=theta; am3.Dt2\
i=i+1; xg,
9~f[
end Q`'c xx
end Ih.)iTs~%
R=30; ZDzG8E0Sq
r=0; H'udxPF
for i=1:a $eT[`r
r(i+1)=sqrt(R^2/a+r(i)^2); 6 l2O>V
end %pOxt<
I(:,1)=sin(itheta); x?B`p"ifS
I(:,2)=cos(itheta); &L?]w=*
N=[0,1]; (-0d@eqw
P=[0,5]; 6p&2 A
O=[0,1]; V >eG\
n=1.5896; ,Nw2cv}D
for i=1:a; ;:oJFI#;
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) ); <5j%!6zo
P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1); $v2t6wS,"
O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2); MtPdpm6\
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); AU)\ lyB
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); :oW 16m1`
end 1>\ V>g9
P(:,3)=0; /m p !%j~
plot(P(:,1),P(:,2)); @> $qb|j
2 f%+ 1uU
[attachment=109396]
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