| 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。
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是根据这篇论文编的matlab代码。
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XF>!~D
哪位大神指点一下 n<@C'\j@
clear; 6OJhF7\0&
H=20; c/=\YeR
a=100; E$A=*-u
itheta=0; 4H@7 t,>
i=1; Q
\S Sv;3_
for theta=0:0.0001:pi/2 '*Tt$0#o
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005 .]a`-Ofn
itheta(i+1)=theta; <]_[o:nOP
i=i+1; 90-s@a3B-j
end % .ss
end /n:Q>8^n'W
R=30; \@T;/Pj{[
r=0; kY9$ M8b
for i=1:a W^c /l*>v
r(i+1)=sqrt(R^2/a+r(i)^2); )nq(XM7
end hBifn\dFr
I(:,1)=sin(itheta); s$lJJL
I(:,2)=cos(itheta); ``@e7~F{
N=[0,1]; epG =)gd=8
P=[0,5]; q0['!G%["
O=[0,1]; e~ 9g~k]s
n=1.5896; E8t{[N6d
for i=1:a; W&[-QM8
P(i+1,1)=( N(i,1)*P(i,1) + N(i,2)*P(i,2) ) / ( N(i,1) + N(i,2)*I(i+1,2)/I(i+1,1) ); (yeWArQ
P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1); Uc
; S@
O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2); ixoN#'y<"
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); T-x9IoE
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); aZ|S$-}
end L$"pk{'
P(:,3)=0; 3Tc90p l*t
plot(P(:,1),P(:,2)); 83aWMmA(1
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[attachment=109396]
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