| 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。 JA$RY
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是根据这篇论文编的matlab代码。 l`A e&nc6
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哪位大神指点一下 #0f6X,3
clear; >x1yFwX}-f
H=20; (j-_iOQ]i+
a=100; )!lx'>0>
itheta=0; z?t75#u9.
i=1; ,B:r^(}0j
for theta=0:0.0001:pi/2 p Le[<N
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005 [a!)w@ I:
itheta(i+1)=theta; Os/?iGlD*E
i=i+1; Q0%s|8Jc
end vO)]~AiB
end IAJ+n0U
R=30; d5"rCd[
r=0; + }
y"S -
for i=1:a r3+
r(i+1)=sqrt(R^2/a+r(i)^2); ]wUH*\(y
end iB}*<~`.Eg
I(:,1)=sin(itheta); c5Hyja=
I(:,2)=cos(itheta); 7$v_#ZE.H
N=[0,1]; O Cn ra
P=[0,5]; 2%/+r
O=[0,1]; RgVnx] IF
n=1.5896; G0 h e 'BR
for i=1:a; NpxgF <G
P(i+1,1)=( N(i,1)*P(i,1) + N(i,2)*P(i,2) ) / ( N(i,1) + N(i,2)*I(i+1,2)/I(i+1,1) ); I N,=v+A
P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1); Wjli(sT#-
O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2); NFPWh3),f
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); (3 Z;c_N
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); ?1**@E0
end qFI19`?8E
P(:,3)=0; <b?$-Rx
plot(P(:,1),P(:,2)); T_d)1m fl
*=P*b|P"$
[attachment=109396]
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