| liunian |
2016-07-13 15:19 |
程序如下： ,a0RI<D
% By Ruibin 08-9-25 G}dq
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% Instruction：This program help design LED collimating lens , feedback aspheric parameters and several chief dimensions. @c>MROlrlF
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clear all;clc je%y9*V
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% The Frist Step: Define independent parameters TTo?BVBK
r=3.25; %选择开孔半径 M@pF[J/
R=4.25; %定义曲面底部半径 #! (2@N8
d=1; %设置透镜前方平板高度 ZlQ&m
n=1.4935; %定义材料折射率 {X nBj}C
dividing_angle=24; %定义Core与TIR的分界角 aCfWbJ@qiG
min_angle=1; %设置计算精度 M pz9}[`3g
N=4; %设定拟合非球面系数阶数
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% The Second Step：Caculate induced variable +.u
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angles_Core=(dividing_angle:-min_angle:0);angles_TIR=(90:-min_angle:dividing_angle); B+c,3@)x
num_Core=length(angles_Core);num_TIR=length(angles_TIR); uy|]@|J
for i=1:(num_Core) T7?z0DKi
a_Core(i)=(angles_Core(i)*pi/180); ,L\KS^>
k1(i)=cot(a_Core(i)); $?OQtz@
k2(i)=(-k1(i)+(n^2*k1(i)^2+n^2)^(1/2))/(n^2*k1(i)^2-k1(i)^2+n^2); '^' PdB
end Z| 3[Y@c \
k1(num_Core)=999;k2(num_Core)=0; |g<l|lqz |
for i=1:num_TIR !Okl3
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a_TIR(i)=(angles_TIR(i)*pi/180); lvR>%I0`*
k3(i)=tan((pi/2+asin(cos(a_TIR(i))/n))/2); :vFYqoCn
k4(i)=tan(asin(cos(a_TIR(i))/n)); j}G9+GX~,
end Xw162/:h
X0_TIR=R;X0_Core=r;Y0_TIR=0;Y0_Core=r*cot(a_Core(1)); a{ .-qp
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% The Third Step:Solve functions aMxM3"
for i=1:num_Core %Solve the curve of Core AbX#wpp!
syms x; wZj`V_3
f1=k1(i)*x; x*:"G'z T
f2=k2(i)*(x-X0_Core)+Y0_Core; dZC jg0cx
f=f1-f2; 8(!?y[
x=double(solve(f));y=k1(i)*x; Saks~m7,
X0_Core=x;Y0_Core=y; <II>io ;
Px_Core(i)=X0_Core;Py_Core(i)=Y0_Core; <CS,v)4,nH
end d @b ]/
for i=1:num_TIR %Solve the curve of TIR {@ tO9pc`8
syms x; zRm@ |IT
f1=k3(i)*(x-X0_TIR)+Y0_TIR; )s
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f2=k4(i)*(x-r)+r*cot(a_TIR(i)); L~Xzo
f=f1-f2; 8`|Z9umW*
x=double(solve(f));y=k3(i)*(x-X0_TIR)+Y0_TIR; YizwKcuZ
X0_TIR=x;Y0_TIR=y; AFWWGz
Px_TIR(i)=X0_TIR;Py_TIR(i)=Y0_TIR; 87R$Y> V
end @3?dI@i(
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% The furth Step:Fitting the curve 5^N` ~
P_Core=polyfit(Px_Core,Py_Core,4); 22E I`}"J
P_TIR=polyfit(Px_TIR,Py_TIR,4); r
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% The fifth Step:Feedback chief dimensions of the lens and Create it EB
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%Feedback dimensions of the whole lens jZ,=tF
result='透镜尺寸如下：' u X (#+
Diameter_of_lens=2*Px_TIR(num_TIR) $$T a
Thickness_of_lens=Py_TIR(num_TIR)+d ii ^Nxnc=
Diameter_of_Core=2*r Fw%S%*B8g
Thickness_of_front_pannel=d
3nx*M=
Bottom_thickness=R-r a.XMeB
Lowest_Core=P_Core(5) N1dM,H
[4mIww%
%Feedback dimensions of Lens part TIR i > BQRbU
result='TIR系数如下：' xHlO~:Lc
Thickness=Py_TIR(num_TIR)-P_TIR(5)+d V"A* B
Aperture=Px_TIR(num_TIR) =^w:G =ymS
Obstruction=r Y>CZ
Position=P_TIR(5) J/c5)IB|
format short e; *>jJ<8!
Aspheric=[P_TIR(4) P_TIR(3) P_TIR(2) P_TIR(1)] "]yfx@) _
format short; \*30E<;C_
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%DDE Connection &[[Hfs2:-]
TP_COMMAND = ddeinit('TracePro','Scheme'); PC& (1kJ
%Create TIR &hIr@Gi@ch
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)))']; s<8|_Dt
ddeexec(TP_COMMAND,cmd); gV-A+;u
cmd =['(entity:move TIR 0 0 -2.3712)']; Ot s] y
ddeexec(TP_COMMAND,cmd); W"5VqN6v
cmd =['(property:apply-name TIR "TIR")']; KK /siG~O
ddeexec(TP_COMMAND,cmd); (5)DQ 1LaF
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%Feedback dimensions of Lens part TIR b5l;bXp]
result='Core系数如下：' v<gv e<]
Thickness=Py_TIR(num_TIR)-P_Core(5)+d E<tJ8&IGk
Aperture=r Y58et9gRO
Obstruction='None' ynZfO2kf
Position=P_Core(5) X>Y>1fI.
format short e; =la~D]T*g
Aspheric=[P_Core(4) P_Core(3) P_Core(2) P_Core(1)] fh9w5hT={
format short; 3:3>k 8
%Create Core # 6 M3BF
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)))']; et@<MU@ `
ddeexec(TP_COMMAND,cmd); l ' Uj"9r,
cmd =['(entity:move Core 0 0 5.9493)']; D3C3_
@ *
ddeexec(TP_COMMAND,cmd); 3 2K
cmd =['(property:apply-name Core "Core")']; O sgjSJrf
ddeexec(TP_COMMAND,cmd); BB? 4>#D
< ! PbD
%Create Lens uVzvUz{b
cmd =['(define Unite (bool:unite TIR Core))']; @}_Wl<kn
ddeexec(TP_COMMAND,cmd); +?GsIp@>jh
cmd =['(define block (insert:block 100 100 100))']; Url8&.pw
ddeexec(TP_COMMAND,cmd); b fKF6
cmd =['(entity:move block 0 0 -50)']; R-1C#R[
ddeexec(TP_COMMAND,cmd); :E2 ww`
cmd =['(define Lens (bool:subtract Unite block))']; @ gjA8mL
ddeexec(TP_COMMAND,cmd); @ "/:Omh
cmd =['(property:apply-name Lens "Lens")']; dEPLkv
ddeexec(TP_COMMAND,cmd); />V&
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??,/85lM
%Close the DDE connection e9rgJJ
ddeterm(TP_COMMAND); r!/<%\S
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看看吧
