| liunian |
2016-07-13 15:19 |
程序如下： TR/'L!EE
% By Ruibin 08-9-25 ^tc2?T
% Instruction：This program help design LED collimating lens , feedback aspheric parameters and several chief dimensions. o7'
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clear all;clc Bt[OGa(q
m{4e+&S|
% The Frist Step: Define independent parameters xs_l+/cZ
r=3.25; %选择开孔半径 6m"_=.k%
R=4.25; %定义曲面底部半径 P#H|at
d=1; %设置透镜前方平板高度 L5=Tj4`
n=1.4935; %定义材料折射率 /R7qR#
dividing_angle=24; %定义Core与TIR的分界角 PYX]ld.E
min_angle=1; %设置计算精度 c | OIUc
N=4; %设定拟合非球面系数阶数 *&]x-p1m
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% The Second Step：Caculate induced variable I%.KFPV
angles_Core=(dividing_angle:-min_angle:0);angles_TIR=(90:-min_angle:dividing_angle); H-$ )@
num_Core=length(angles_Core);num_TIR=length(angles_TIR); * NzHY;e
for i=1:(num_Core) W& 23M26"{
a_Core(i)=(angles_Core(i)*pi/180); m2{3j[
k1(i)=cot(a_Core(i)); q|,cMPS3
k2(i)=(-k1(i)+(n^2*k1(i)^2+n^2)^(1/2))/(n^2*k1(i)^2-k1(i)^2+n^2); 9Ps[i)-
end 02OL-bv}HS
k1(num_Core)=999;k2(num_Core)=0; $xqI3UaX
for i=1:num_TIR {a -bew
a_TIR(i)=(angles_TIR(i)*pi/180); =@$G3DM
k3(i)=tan((pi/2+asin(cos(a_TIR(i))/n))/2); ZS[(r-)$F
k4(i)=tan(asin(cos(a_TIR(i))/n)); 72@lDY4cE
end e]R`B}v O
X0_TIR=R;X0_Core=r;Y0_TIR=0;Y0_Core=r*cot(a_Core(1)); 6z3 Yq{1
h&d%#6mB
% The Third Step:Solve functions MN1
kR
for i=1:num_Core %Solve the curve of Core HPJ\]HV(
syms x; 3NRxf 8
f1=k1(i)*x; _): V7Zv
f2=k2(i)*(x-X0_Core)+Y0_Core; &Ohm]g8{ 2
f=f1-f2; DrE
+{Spm
x=double(solve(f));y=k1(i)*x; JRQ{Q"`)
X0_Core=x;Y0_Core=y; .R5[bXxe7
Px_Core(i)=X0_Core;Py_Core(i)=Y0_Core; Z 'sAu#C
end C%P)_)- -V
for i=1:num_TIR %Solve the curve of TIR $t.i)wg +
syms x; gx+bKGB`
f1=k3(i)*(x-X0_TIR)+Y0_TIR; 0IU>KGJ-0s
f2=k4(i)*(x-r)+r*cot(a_TIR(i)); b=[ gK|fu
f=f1-f2; Sj?u^L8es}
x=double(solve(f));y=k3(i)*(x-X0_TIR)+Y0_TIR; : C6
X0_TIR=x;Y0_TIR=y; YNV!(>\GE
Px_TIR(i)=X0_TIR;Py_TIR(i)=Y0_TIR; @pq#?
end n^<3E; a
zs#s"e:jeR
% The furth Step:Fitting the curve U^jxKBq^
P_Core=polyfit(Px_Core,Py_Core,4); 90JD`Nz
P_TIR=polyfit(Px_TIR,Py_TIR,4); ( bEX"U-
5)X;q-
% The fifth Step:Feedback chief dimensions of the lens and Create it ];BGJ5^j
%Feedback dimensions of the whole lens VxD_:USIF
result='透镜尺寸如下：' Da_8Q(XFe
Diameter_of_lens=2*Px_TIR(num_TIR) Wr3j8"f/
Thickness_of_lens=Py_TIR(num_TIR)+d 3I!xa*u
Diameter_of_Core=2*r O^fg~g X
Thickness_of_front_pannel=d V=yRE
Bottom_thickness=R-r m\a_0! K
Lowest_Core=P_Core(5) 1,cd[^`.
%ux%=@%
%Feedback dimensions of Lens part TIR 5Z2E))UU
result='TIR系数如下：' }6/L5j:+
Thickness=Py_TIR(num_TIR)-P_TIR(5)+d [e1k fw
Aperture=Px_TIR(num_TIR) [Xp{z tGE
Obstruction=r (!F Uu
Position=P_TIR(5) X r7pFw
format short e; zJ;K4)"j
Aspheric=[P_TIR(4) P_TIR(3) P_TIR(2) P_TIR(1)] +$]eA'Bh@
format short; -TnvX(ok4
?39B(T
%DDE Connection <~aQ_l
TP_COMMAND = ddeinit('TracePro','Scheme'); .Q'/e >0
%Create TIR Y|ON Cc
cmd =['(define TIR (insert:lens-element "PLASTIC" "pmma" (list 0 0 7.0306e-002 1.2580e-001 -2.5732e-003 -2.5281e-006) 18.6774 (list 0 0)(list "cir" 13.6051 0 0 0)(list "cir" 3.25 0 0 0)))']; cd8ZZ 8L
ddeexec(TP_COMMAND,cmd); P'o:Vhm_H
cmd =['(entity:move TIR 0 0 -2.3712)']; ?Y6MC:l<
ddeexec(TP_COMMAND,cmd); dc#Db~v}k
cmd =['(property:apply-name TIR "TIR")']; f 1R&Q
ddeexec(TP_COMMAND,cmd); vCC}IDd
OkSJob
%Feedback dimensions of Lens part TIR k+k&} 8e
result='Core系数如下：' "=~P &Mi_
Thickness=Py_TIR(num_TIR)-P_Core(5)+d *We.?"X'].
Aperture=r x;H#-^LxW=
Obstruction='None' )9_j r(s
Position=P_Core(5) U3SF'r8
format short e; /<Nb/#8
Aspheric=[P_Core(4) P_Core(3) P_Core(2) P_Core(1)] ** \B P,]}
format short; xw60l&s.\L
%Create Core ?VM# Nf\
cmd =['(define Core (insert:lens-element "PLASTIC" "pmma" (list 0 0 -2.6211e-002 1.9124e-001 -1.7949e-002 2.8016e-004) 10.3569 (list 0 0)(list "cir" 3.2500 0 0 0)))']; RG(m:N
ddeexec(TP_COMMAND,cmd); ucm 3'j
cmd =['(entity:move Core 0 0 5.9493)']; |7IlYy& :
ddeexec(TP_COMMAND,cmd); 8+^?<FKa
cmd =['(property:apply-name Core "Core")']; r,p6J7/lfS
ddeexec(TP_COMMAND,cmd); _!FM^N}|
k;V4%O
%Create Lens e'<pw^I\
cmd =['(define Unite (bool:unite TIR Core))']; qw A N=3@
ddeexec(TP_COMMAND,cmd); 7?6?`no~JJ
cmd =['(define block (insert:block 100 100 100))']; a/@<KnT
ddeexec(TP_COMMAND,cmd); muLt/.EZ
cmd =['(entity:move block 0 0 -50)']; p'afCX@J
ddeexec(TP_COMMAND,cmd); "c erg?ix
cmd =['(define Lens (bool:subtract Unite block))']; KMz\h2X
ddeexec(TP_COMMAND,cmd); MWSx8R)PN
cmd =['(property:apply-name Lens "Lens")']; } g WSV
ddeexec(TP_COMMAND,cmd); 6T6 S9A*nT
$cO"1mu
%Close the DDE connection !Ju?REH
ddeterm(TP_COMMAND); 4-q7o]%5<
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