| 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。 &rc
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是根据这篇论文编的matlab代码。 \Z~
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哪位大神指点一下 (;HO3Z".q$
clear; *;lb<uLv
H=20; i A'p!l |P
a=100; Ku3NE- )
itheta=0; !8R JHMX&
i=1; 1D~B\=LL}
for theta=0:0.0001:pi/2 _~*ba+{
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005 X'2%'z<
itheta(i+1)=theta; Fg2/rC:_
i=i+1; Y&i&H=U
end NpA%7Q~B$,
end }UG<_ bE|
R=30; T+!0`~`
r=0; *r6 v9
for i=1:a W,nn,%
r(i+1)=sqrt(R^2/a+r(i)^2); =knBwjeD
end c&`]O\D-c
I(:,1)=sin(itheta); ;Z,l };b
I(:,2)=cos(itheta); 8PG&/ " K
N=[0,1]; pT;xoe
P=[0,5]; mVT [:a3
O=[0,1]; 2k`Q+[?{q>
n=1.5896; Maiy d
for i=1:a; b 1Ba}
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) ); 3b<;y%
P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1); j~hvPlho
O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2); uU+ ?:C
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); 2d&HSW
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); @ZcI]G%
end Vz y )jf
P(:,3)=0; #Jfmt~ks '
plot(P(:,1),P(:,2)); sWP_f b1
U(<~("ocN
[attachment=109396]
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