| liunian |
2016-07-13 15:19 |
程序如下： fVf:voh
% By Ruibin 08-9-25 D4C:% D
% Instruction：This program help design LED collimating lens , feedback aspheric parameters and several chief dimensions. wy
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clear all;clc j7QK8O$XL
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% The Frist Step: Define independent parameters *^Ges;5 $"
r=3.25; %选择开孔半径 ,Q3OQ[Nmh
R=4.25; %定义曲面底部半径 G ;iH.rCH
d=1; %设置透镜前方平板高度 }mzd23^W>P
n=1.4935; %定义材料折射率 ?Z_T3/ f
dividing_angle=24; %定义Core与TIR的分界角 1G.?Y3DC<
min_angle=1; %设置计算精度 ~\i(bFd)
N=4; %设定拟合非球面系数阶数 [f!
{
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% The Second Step：Caculate induced variable ,|3_@tUl
angles_Core=(dividing_angle:-min_angle:0);angles_TIR=(90:-min_angle:dividing_angle); sW'_ K.z
num_Core=length(angles_Core);num_TIR=length(angles_TIR); dP(.l}O
for i=1:(num_Core) JN4gH4ez)
a_Core(i)=(angles_Core(i)*pi/180); JqZt1 um
k1(i)=cot(a_Core(i)); d(TN(6g@
k2(i)=(-k1(i)+(n^2*k1(i)^2+n^2)^(1/2))/(n^2*k1(i)^2-k1(i)^2+n^2); @/ |g|4
end }A,!|m4
k1(num_Core)=999;k2(num_Core)=0; Yj*T'<e
for i=1:num_TIR P+ CdqOL
a_TIR(i)=(angles_TIR(i)*pi/180); c*.
k3(i)=tan((pi/2+asin(cos(a_TIR(i))/n))/2); 6i~|<vcSP
k4(i)=tan(asin(cos(a_TIR(i))/n)); od 5nRb
end jex\ 5
X0_TIR=R;X0_Core=r;Y0_TIR=0;Y0_Core=r*cot(a_Core(1)); {9-9!jN{"
mXyN{`q=
% The Third Step:Solve functions 3)ox8,{%}
for i=1:num_Core %Solve the curve of Core r~YBj>}
syms x; 4v |i\V>M
f1=k1(i)*x; )[J!{$&y
f2=k2(i)*(x-X0_Core)+Y0_Core; U~ )5 {
f=f1-f2; (]T[n={Y
x=double(solve(f));y=k1(i)*x; i&^JG/a
X0_Core=x;Y0_Core=y; wdfbl_`T
Px_Core(i)=X0_Core;Py_Core(i)=Y0_Core; Q~qM;l\i
end DbLo{mFEIj
for i=1:num_TIR %Solve the curve of TIR - _ 8-i1?
syms x; |;xEK nF
f1=k3(i)*(x-X0_TIR)+Y0_TIR; s>I]_W)Pt
f2=k4(i)*(x-r)+r*cot(a_TIR(i)); ^)Awjj9
f=f1-f2; U5wh( vi
x=double(solve(f));y=k3(i)*(x-X0_TIR)+Y0_TIR; E:B"!Y6
X0_TIR=x;Y0_TIR=y; `h' l"3l
Px_TIR(i)=X0_TIR;Py_TIR(i)=Y0_TIR; EyVu- 4L:#
end {<@ud 0A:\
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% The furth Step:Fitting the curve fdX|t "oz
P_Core=polyfit(Px_Core,Py_Core,4); $Wj{B@k
P_TIR=polyfit(Px_TIR,Py_TIR,4); 3N-
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% The fifth Step:Feedback chief dimensions of the lens and Create it 7yT /t1)
%Feedback dimensions of the whole lens "{qnm+G
result='透镜尺寸如下：' ;`LG WT-<F
Diameter_of_lens=2*Px_TIR(num_TIR) j0~am,yZ
Thickness_of_lens=Py_TIR(num_TIR)+d %L- qAI &V
Diameter_of_Core=2*r { *F
=&D
Thickness_of_front_pannel=d k(^TXUK\o
Bottom_thickness=R-r ? !U.o1
Lowest_Core=P_Core(5) O50<h O]l
9xz@2b@
%Feedback dimensions of Lens part TIR 6'kQ(r>
result='TIR系数如下：' .=Oww
Thickness=Py_TIR(num_TIR)-P_TIR(5)+d {[tmz;C
Aperture=Px_TIR(num_TIR) HVoP J!K3
Obstruction=r w^
z ftm
Position=P_TIR(5) d]E={}qo&
format short e; ]? H12xz
Aspheric=[P_TIR(4) P_TIR(3) P_TIR(2) P_TIR(1)] tt2
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format short; \ui'~n_t]
l$\B>u,>
%DDE Connection m4oj1h_4
TP_COMMAND = ddeinit('TracePro','Scheme'); ]
&" `
%Create TIR wU!-sf;]y
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)))']; [pE b`s
ddeexec(TP_COMMAND,cmd); {g1"{
cmd =['(entity:move TIR 0 0 -2.3712)']; ^gx~{9`RR
ddeexec(TP_COMMAND,cmd); C.:S@{sK
cmd =['(property:apply-name TIR "TIR")']; n0co*
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ddeexec(TP_COMMAND,cmd); t?-a JU
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%Feedback dimensions of Lens part TIR D!Y@Og.
result='Core系数如下：' !ITM:%
Thickness=Py_TIR(num_TIR)-P_Core(5)+d ~Yg) 8
Aperture=r R/"-r^j
Obstruction='None' zEO~mJzo
Position=P_Core(5) -r< 8mL:yW
format short e; _[z)%`kay
Aspheric=[P_Core(4) P_Core(3) P_Core(2) P_Core(1)] WHBGhU
format short; s<# BxN
%Create Core G \MeJSt*
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)))']; %. f%Q?P
ddeexec(TP_COMMAND,cmd); Z]Ud x
cmd =['(entity:move Core 0 0 5.9493)']; 8%u |[Si;
ddeexec(TP_COMMAND,cmd); 0]*W0#{Zj
cmd =['(property:apply-name Core "Core")']; ?+7 ~ E8
ddeexec(TP_COMMAND,cmd); w (RRu~J
1a S :bFi`
%Create Lens n:wAxU
cmd =['(define Unite (bool:unite TIR Core))']; 2HB ey
ddeexec(TP_COMMAND,cmd); z(Uz<*h8
cmd =['(define block (insert:block 100 100 100))']; 7Ko*`-p
ddeexec(TP_COMMAND,cmd); h%u!UHA
cmd =['(entity:move block 0 0 -50)']; (nmsw6
X
ddeexec(TP_COMMAND,cmd); ]5QXiF8`
cmd =['(define Lens (bool:subtract Unite block))']; *&I v Eu
ddeexec(TP_COMMAND,cmd); wT- -i@@
cmd =['(property:apply-name Lens "Lens")']; H.XyNtJ
ddeexec(TP_COMMAND,cmd); }]dzY(
5<`83; R 9
%Close the DDE connection ktynIN
ddeterm(TP_COMMAND); QnB WZUI
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