| liunian |
2016-07-13 15:19 |
程序如下： l>iE1`iL<
% By Ruibin 08-9-25 usz H1@g'
% Instruction：This program help design LED collimating lens , feedback aspheric parameters and several chief dimensions. [ r;hF
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clear all;clc ';.n#
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% The Frist Step: Define independent parameters \o2cztl =
r=3.25; %选择开孔半径 Gp5[H}8K
R=4.25; %定义曲面底部半径 /%9CR'%*c
d=1; %设置透镜前方平板高度 g _2EH
n=1.4935; %定义材料折射率 }"o,j>IP
dividing_angle=24; %定义Core与TIR的分界角 y`Km96 Ui
min_angle=1; %设置计算精度 ts=KAdcJ
N=4; %设定拟合非球面系数阶数
MT UJsH\
?)i`)mu'
% The Second Step：Caculate induced variable B jsF5~+\
angles_Core=(dividing_angle:-min_angle:0);angles_TIR=(90:-min_angle:dividing_angle); Y*q_>kps"
num_Core=length(angles_Core);num_TIR=length(angles_TIR); |(6H)S]$
for i=1:(num_Core) oNK-^N ?-T
a_Core(i)=(angles_Core(i)*pi/180); -&3mOn& (1
k1(i)=cot(a_Core(i)); C #Y_La
k2(i)=(-k1(i)+(n^2*k1(i)^2+n^2)^(1/2))/(n^2*k1(i)^2-k1(i)^2+n^2); @ - _lw
end >+8Kl`2sw;
k1(num_Core)=999;k2(num_Core)=0; Q\ k|pg?
for i=1:num_TIR T>\ r}p
a_TIR(i)=(angles_TIR(i)*pi/180); 6Lh fb\2?
k3(i)=tan((pi/2+asin(cos(a_TIR(i))/n))/2); sUEvL( %nY
k4(i)=tan(asin(cos(a_TIR(i))/n)); H%
"R _[+
end 0 CFON2I
X0_TIR=R;X0_Core=r;Y0_TIR=0;Y0_Core=r*cot(a_Core(1)); "F fIq;
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% The Third Step:Solve functions (( T0zQ7=
for i=1:num_Core %Solve the curve of Core g9K7_T #W
syms x; 1j":j %9M
f1=k1(i)*x; Z;4pI@ u
f2=k2(i)*(x-X0_Core)+Y0_Core; _(.,< R5
f=f1-f2; ~D$?.,=l
x=double(solve(f));y=k1(i)*x; Q@ "mL
X0_Core=x;Y0_Core=y; pk5W!K
Px_Core(i)=X0_Core;Py_Core(i)=Y0_Core; vE=)qn= a
end ="=Aac#n`
for i=1:num_TIR %Solve the curve of TIR }W)c-91
syms x; {u4=*> ?G
f1=k3(i)*(x-X0_TIR)+Y0_TIR; h..D1(M
f2=k4(i)*(x-r)+r*cot(a_TIR(i)); X5`#d a
f=f1-f2; rs?"pGz;
x=double(solve(f));y=k3(i)*(x-X0_TIR)+Y0_TIR; yw3E$~ k
X0_TIR=x;Y0_TIR=y; uv$ t>_^
Px_TIR(i)=X0_TIR;Py_TIR(i)=Y0_TIR; Dd:;8Xo
end X 'W8 mqk
7g a|4j3%
% The furth Step:Fitting the curve \ Rff3$
P_Core=polyfit(Px_Core,Py_Core,4); X;D"}X4(E
P_TIR=polyfit(Px_TIR,Py_TIR,4); L@ t}UC
FPB O=?H.
% The fifth Step:Feedback chief dimensions of the lens and Create it 1s@% q
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%Feedback dimensions of the whole lens alB[/.1
result='透镜尺寸如下：' 3x U i n
Diameter_of_lens=2*Px_TIR(num_TIR) ">V.nao
Thickness_of_lens=Py_TIR(num_TIR)+d |&hu3-(
Diameter_of_Core=2*r
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Thickness_of_front_pannel=d O^W.5Sa R
Bottom_thickness=R-r ; #F7Fp *U
Lowest_Core=P_Core(5) ?-g/hXx;
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%Feedback dimensions of Lens part TIR G6?+Qz r
result='TIR系数如下：' $%ts#56*
Thickness=Py_TIR(num_TIR)-P_TIR(5)+d 2kS]:4)T
Aperture=Px_TIR(num_TIR) O =C z*j
Obstruction=r @! g JOy
Position=P_TIR(5) ZI 8*PX%2
format short e; | ]DJz
Aspheric=[P_TIR(4) P_TIR(3) P_TIR(2) P_TIR(1)] }#3'72
format short; (4WAoye |
ck WK +
%DDE Connection D0 f.XWd
TP_COMMAND = ddeinit('TracePro','Scheme'); tAM t7p-
%Create TIR ",hPy[k
cmd =['(define TIR (insert:lens-element "PLASTIC" "pmma" (list 0 0 7.0306e-002 1.2580e-001 -2.5732e-003 -2.5281e-006) 18.6774 (list 0 0)(list "cir" 13.6051 0 0 0)(list "cir" 3.25 0 0 0)))']; @},25"x)
ddeexec(TP_COMMAND,cmd); [-$ :XOO
cmd =['(entity:move TIR 0 0 -2.3712)']; }{(dG7G+
ddeexec(TP_COMMAND,cmd); fA k]]PU
cmd =['(property:apply-name TIR "TIR")']; `q nNEJL,
ddeexec(TP_COMMAND,cmd); tf5h/:
rrSs Q q
%Feedback dimensions of Lens part TIR rh6gB]X]3:
result='Core系数如下：' yX' f"*
Thickness=Py_TIR(num_TIR)-P_Core(5)+d P!apAr
Aperture=r R2 I
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Obstruction='None' Hlr[x
Position=P_Core(5) el;ey Ga
format short e; $z>L $,c>
Aspheric=[P_Core(4) P_Core(3) P_Core(2) P_Core(1)] #Oeb3U
format short; ?B dhn{_
%Create Core 4w\@D>@}H
cmd =['(define Core (insert:lens-element "PLASTIC" "pmma" (list 0 0 -2.6211e-002 1.9124e-001 -1.7949e-002 2.8016e-004) 10.3569 (list 0 0)(list "cir" 3.2500 0 0 0)))']; M'n2 j
ddeexec(TP_COMMAND,cmd);
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cmd =['(entity:move Core 0 0 5.9493)']; Lcx)wof
ddeexec(TP_COMMAND,cmd); c89+}]mGq
cmd =['(property:apply-name Core "Core")']; BXCB /:0
ddeexec(TP_COMMAND,cmd); srh>"
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%Create Lens 8)w xc1
cmd =['(define Unite (bool:unite TIR Core))']; f[AN=M"B"s
ddeexec(TP_COMMAND,cmd); kma)DW
cmd =['(define block (insert:block 100 100 100))']; %l#i9$s
ddeexec(TP_COMMAND,cmd); =Z3{6y}3p
cmd =['(entity:move block 0 0 -50)']; ?OYK'p.
ddeexec(TP_COMMAND,cmd); Y M <8>d
cmd =['(define Lens (bool:subtract Unite block))'];
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ddeexec(TP_COMMAND,cmd); +4N7 _Y
cmd =['(property:apply-name Lens "Lens")']; TspuZR@2
ddeexec(TP_COMMAND,cmd); q$|Wxnz
s?:&#
%Close the DDE connection v*.[O/,EBR
ddeterm(TP_COMMAND); ~`uEZ
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看看吧
