程序如下: 9>6?tb"f*H
% By Ruibin 08-9-25 d$HPpi1LL
% Instruction:This program help design LED collimating lens , feedback aspheric parameters and several chief dimensions. YJF|J2u
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clear all;clc WCP2x.gb5
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% The Frist Step: Define independent parameters GGU>={D)
r=3.25; %选择开孔半径 P>hR${KE
R=4.25; %定义曲面底部半径 N (0%C?
d=1; %设置透镜前方平板高度 tfdb9#&?
n=1.4935; %定义材料折射率 !}hG|Y6s
dividing_angle=24; %定义Core与TIR的分界角 b"y4-KV
min_angle=1; %设置计算精度 ig ^x%!;
N=4; %设定拟合非球面系数阶数 "XLFw;o
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% The Second Step:Caculate induced variable ?h:xO\h8
angles_Core=(dividing_angle:-min_angle:0);angles_TIR=(90:-min_angle:dividing_angle); Tq,dlDDOR
num_Core=length(angles_Core);num_TIR=length(angles_TIR); M Al4g+es
for i=1:(num_Core) W.l#@p
a_Core(i)=(angles_Core(i)*pi/180); 0D/7X9xg9+
k1(i)=cot(a_Core(i)); v$Xoxp
k2(i)=(-k1(i)+(n^2*k1(i)^2+n^2)^(1/2))/(n^2*k1(i)^2-k1(i)^2+n^2); $"g'C8
end +ZR>ul-c
k1(num_Core)=999;k2(num_Core)=0; [ZL<Q
for i=1:num_TIR fLZ99?J
a_TIR(i)=(angles_TIR(i)*pi/180); 9vBW CCf
k3(i)=tan((pi/2+asin(cos(a_TIR(i))/n))/2); dN@C)5pm5`
k4(i)=tan(asin(cos(a_TIR(i))/n)); tu^C<MV
end \;1nEjIA
X0_TIR=R;X0_Core=r;Y0_TIR=0;Y0_Core=r*cot(a_Core(1)); 0py29>"t
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% The Third Step:Solve functions h\4enu9[RL
for i=1:num_Core %Solve the curve of Core U
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syms x; _q}^#-
f1=k1(i)*x; JvF0s}#4
f2=k2(i)*(x-X0_Core)+Y0_Core; qG3MyK%O\
f=f1-f2; O f]/tdPp
x=double(solve(f));y=k1(i)*x; Lb~'
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X0_Core=x;Y0_Core=y;
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Px_Core(i)=X0_Core;Py_Core(i)=Y0_Core; a>&dAo}
end ~En]sj
for i=1:num_TIR %Solve the curve of TIR $ve*j=p
syms x; -0+h&CO
f1=k3(i)*(x-X0_TIR)+Y0_TIR; 8{ )N%r
f2=k4(i)*(x-r)+r*cot(a_TIR(i)); ,4r 4 <
f=f1-f2; #&Rx?V
x=double(solve(f));y=k3(i)*(x-X0_TIR)+Y0_TIR; [*g'Y;W
X0_TIR=x;Y0_TIR=y; }[y_Fr0
Px_TIR(i)=X0_TIR;Py_TIR(i)=Y0_TIR; sC_doh_M
end CUx-k|\
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% The furth Step:Fitting the curve jP.dQj^j&
P_Core=polyfit(Px_Core,Py_Core,4); ywj'O
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P_TIR=polyfit(Px_TIR,Py_TIR,4); 2p~G][
#Eqx Eo;
% The fifth Step:Feedback chief dimensions of the lens and Create it _sQhD i
%Feedback dimensions of the whole lens U.1&'U*
result='透镜尺寸如下:' 5}2148
Diameter_of_lens=2*Px_TIR(num_TIR) F1/BtGvQE
Thickness_of_lens=Py_TIR(num_TIR)+d y24/lc
Diameter_of_Core=2*r >6|Xvtf
Thickness_of_front_pannel=d FAq9G-\B
Bottom_thickness=R-r @DKph!cr
Lowest_Core=P_Core(5) 6%MM)Vj+u
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%Feedback dimensions of Lens part TIR 0U!_ o2]
result='TIR系数如下:' 2^)_XVX1
Thickness=Py_TIR(num_TIR)-P_TIR(5)+d } a!HbH
Aperture=Px_TIR(num_TIR) ITZ}$=
Obstruction=r cXNR<`
Position=P_TIR(5) oN,9#*PVL
format short e; $PMD $c
Aspheric=[P_TIR(4) P_TIR(3) P_TIR(2) P_TIR(1)] /5~j"|
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format short; V]/$ dJ
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%DDE Connection %-an\.a.
TP_COMMAND = ddeinit('TracePro','Scheme'); 6%&DJBU!
%Create TIR x5k6"S"1,
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)))']; 4
;^
ddeexec(TP_COMMAND,cmd); .#LHj}u
cmd =['(entity:move TIR 0 0 -2.3712)']; 5s<.qDc
ddeexec(TP_COMMAND,cmd); 8aVj@x$'
cmd =['(property:apply-name TIR "TIR")']; H<
ddeexec(TP_COMMAND,cmd); 2
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%Feedback dimensions of Lens part TIR UW&K\P
result='Core系数如下:' +<3e@s&
Thickness=Py_TIR(num_TIR)-P_Core(5)+d :JK+V2B$H
Aperture=r >1q:-^
Obstruction='None' *rC%nmJwk!
Position=P_Core(5) #yOeL3|b'
format short e; Fu65VLKh
Aspheric=[P_Core(4) P_Core(3) P_Core(2) P_Core(1)] _r`(P#Hy
format short; c#a>> V
%Create Core )jMk~;'r
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)))']; r|3<UR%
ddeexec(TP_COMMAND,cmd); twp~#s:\z
cmd =['(entity:move Core 0 0 5.9493)']; RA}Y$ }^#'
ddeexec(TP_COMMAND,cmd); Ju_(,M-Vgr
cmd =['(property:apply-name Core "Core")']; ^geY Ay
ddeexec(TP_COMMAND,cmd); ki8Jl}dr
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%Create Lens O*9d[jw[
cmd =['(define Unite (bool:unite TIR Core))']; *7C l1o
ddeexec(TP_COMMAND,cmd); LHs^Xo18
cmd =['(define block (insert:block 100 100 100))']; P?zL`czWd
ddeexec(TP_COMMAND,cmd); DS7Pioa86
cmd =['(entity:move block 0 0 -50)']; AZnFOS
ddeexec(TP_COMMAND,cmd); &zHY0fxX
cmd =['(define Lens (bool:subtract Unite block))']; ,9W!cD+0
ddeexec(TP_COMMAND,cmd); gh%Q9Ni-
cmd =['(property:apply-name Lens "Lens")']; vZIx>
ddeexec(TP_COMMAND,cmd);
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%Close the DDE connection L]=LY
ddeterm(TP_COMMAND); G.qjw]Llf