| 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。 |g^W @.P
=5_F9nk-
[attachment=109397] `A{~}6jw
T S8E9#1a
是根据这篇论文编的matlab代码。 p 00Bgo
U8Jj(]},_
[attachment=109395] Id
7
h G HzO
哪位大神指点一下 *TI6Z$b|6
clear; $i]
M6<Vxn
H=20; M<m64{m1
a=100; 3Qr!?=nf
itheta=0; _qo1 GM&
i=1; ? bg pUv
for theta=0:0.0001:pi/2 sO-R+G/^7
if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005 5j 01Mx
A
itheta(i+1)=theta; M#2U'jy
i=i+1; g]Ny?61
end Sf: lN4
end %4 ^/. ) Q
R=30; Q&a<9e&
r=0;
A2bV[+ Q
for i=1:a .7rsbZ zs
r(i+1)=sqrt(R^2/a+r(i)^2); #,{v Js~
end Ri0 +n J6
I(:,1)=sin(itheta); gbZ X'D
I(:,2)=cos(itheta); vt=S0X^$yc
N=[0,1]; Wf w9cxGkf
P=[0,5]; m:7bynT{
O=[0,1]; x G"p .
n=1.5896; 4 /vQ=t
for i=1:a; Dv{AZyqe
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) ); yiA\$mtO
P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1); TrA Uu`?#
O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2); w2V E_
O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 ); V1qHl5"
N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) ); .}>[ Kr
end ]qRz!D%@^
P(:,3)=0; U]3JCZ{]0E
plot(P(:,1),P(:,2)); 1S#bV} !
qT%E[qDS
[attachment=109396]
|
|
