| 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。 d`sZ" 8}j
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是根据这篇论文编的matlab代码。 tU4#7b :Y
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[attachment=109395] [RF,0> ^b
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哪位大神指点一下 r-qe7K@p
clear; f+e"`80$*C
H=20; ^ :VH?I=
a=100; I ~7iIUD
itheta=0; pGie!2T E
i=1;
>a"J);p
for theta=0:0.0001:pi/2 `Vvi]>,cg`
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005 7L~ *%j
itheta(i+1)=theta; (\: Rnl
i=i+1; %&L1 3:
end jKUEs75]
end 0["93n}r
R=30;
^J^,@ Hf_
r=0; @a8lF$<
for i=1:a q1ysT.{p,
r(i+1)=sqrt(R^2/a+r(i)^2); +\=g&G,
end *7Vb([x4;
I(:,1)=sin(itheta); dIC\U
I(:,2)=cos(itheta); ;Gr
{
N=[0,1]; qT#e
-.G
P=[0,5]; FC0fe_U(F
O=[0,1]; ( .-4Jn
n=1.5896; [Uup5+MCv
for i=1:a; ^Iw$ (
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) ); .IW`?9O$E
P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1); +Tum K.
O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2); ~kW?]/$h
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); ^50dF:V(1
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); ' ]k<' `b|
end :FAPH8]
P(:,3)=0; <Km9Mq
plot(P(:,1),P(:,2)); |~Dl<#58
rC8p!e.yL
[attachment=109396]
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