| liunian |
2016-07-13 15:19 |
程序如下： 0_.hU^fP
% By Ruibin 08-9-25 m^+ ~pC 5
% Instruction：This program help design LED collimating lens , feedback aspheric parameters and several chief dimensions. gWPa8q<b
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clear all;clc 1r4/McB
% j; cXN
% The Frist Step: Define independent parameters SW, Po>Y
r=3.25; %选择开孔半径 TD9`S SpP
R=4.25; %定义曲面底部半径 {P+[C O
d=1; %设置透镜前方平板高度 U0T N8O}Z
n=1.4935; %定义材料折射率 }aI f IJ
dividing_angle=24; %定义Core与TIR的分界角 _
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min_angle=1; %设置计算精度 0&~u0B{
N=4; %设定拟合非球面系数阶数
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% The Second Step：Caculate induced variable 1>{(dd?L
angles_Core=(dividing_angle:-min_angle:0);angles_TIR=(90:-min_angle:dividing_angle); 9\2&6H
num_Core=length(angles_Core);num_TIR=length(angles_TIR); b5R*]
for i=1:(num_Core) EUqG"h5#A{
a_Core(i)=(angles_Core(i)*pi/180); -GjJrYOU
k1(i)=cot(a_Core(i)); @9a=D< '>
k2(i)=(-k1(i)+(n^2*k1(i)^2+n^2)^(1/2))/(n^2*k1(i)^2-k1(i)^2+n^2); 2T9Z{v
end !HYqM(|{.
k1(num_Core)=999;k2(num_Core)=0; '~ 0&m]N
for i=1:num_TIR ?YO%]mT P
a_TIR(i)=(angles_TIR(i)*pi/180); }XU- J An
k3(i)=tan((pi/2+asin(cos(a_TIR(i))/n))/2); ks$G6WC
k4(i)=tan(asin(cos(a_TIR(i))/n)); m6D4J=59
end lla96\R
X0_TIR=R;X0_Core=r;Y0_TIR=0;Y0_Core=r*cot(a_Core(1)); {'(8< n57
R#M).2::
% The Third Step:Solve functions 7O#>N}|
for i=1:num_Core %Solve the curve of Core %#~Wk|8} Q
syms x; Y`uCDfcQ
f1=k1(i)*x; Viw3 /K
f2=k2(i)*(x-X0_Core)+Y0_Core; `R RORzXoS
f=f1-f2; ` 0F
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x=double(solve(f));y=k1(i)*x; CS49 M
X0_Core=x;Y0_Core=y; rv: O|wZ
Px_Core(i)=X0_Core;Py_Core(i)=Y0_Core; KMZ`W n=
end {'%=tJ[YX
for i=1:num_TIR %Solve the curve of TIR clNP9{
syms x; \ :.p8`
f1=k3(i)*(x-X0_TIR)+Y0_TIR; b8&9pLl
f2=k4(i)*(x-r)+r*cot(a_TIR(i)); /Y:Zqk3
f=f1-f2; 9 pn1d .
x=double(solve(f));y=k3(i)*(x-X0_TIR)+Y0_TIR; Pi f1sL6'
X0_TIR=x;Y0_TIR=y; 5]E5 V@C
Px_TIR(i)=X0_TIR;Py_TIR(i)=Y0_TIR; 2Z~o frj
end &0ra a
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% The furth Step:Fitting the curve ]Ea-?IhD
P_Core=polyfit(Px_Core,Py_Core,4); $ }53f'QjW
P_TIR=polyfit(Px_TIR,Py_TIR,4); {;U:0BPI3
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% The fifth Step:Feedback chief dimensions of the lens and Create it syF/jWM5
%Feedback dimensions of the whole lens {$^|^n5j
result='透镜尺寸如下：' UpILr\3U
Diameter_of_lens=2*Px_TIR(num_TIR) & BkNkb 0
Thickness_of_lens=Py_TIR(num_TIR)+d xlAaIo)T
Diameter_of_Core=2*r }O/Nn0,
Thickness_of_front_pannel=d $)3/N&GXR
Bottom_thickness=R-r -SQYr
Lowest_Core=P_Core(5) uw]J m"=w
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%Feedback dimensions of Lens part TIR .JE7vPv%!
result='TIR系数如下：' JLhp25{x
Thickness=Py_TIR(num_TIR)-P_TIR(5)+d N@}U ;x}
Aperture=Px_TIR(num_TIR) (c"!0v
Obstruction=r [>E0(S]
Position=P_TIR(5) 1K>4 i . X
format short e; ` Oi@7 /oT
Aspheric=[P_TIR(4) P_TIR(3) P_TIR(2) P_TIR(1)] DWI!\lK
format short; < qBPN{'a"
=LR UasF
%DDE Connection 7j+. H/2
TP_COMMAND = ddeinit('TracePro','Scheme'); (w*$~ p
%Create TIR I ; _.tG
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)))']; 1na[=Q2
ddeexec(TP_COMMAND,cmd); w Z^/-
cmd =['(entity:move TIR 0 0 -2.3712)']; rTH@PDk>)
ddeexec(TP_COMMAND,cmd); N `M5`=.
cmd =['(property:apply-name TIR "TIR")']; `f s[C
ddeexec(TP_COMMAND,cmd); v [x`I;
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%Feedback dimensions of Lens part TIR -Je+7#P1
result='Core系数如下：' %Um E=V
Thickness=Py_TIR(num_TIR)-P_Core(5)+d {1o=/ &
Aperture=r xs fq[}eH<
Obstruction='None' | :\h3M
Position=P_Core(5) Th8 xh=F[
format short e; KksbhN{AB
Aspheric=[P_Core(4) P_Core(3) P_Core(2) P_Core(1)] \sk,3b-&'
format short; ]C!u~A\jq
%Create Core L2 I/h`n"
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)))']; X **w RF
ddeexec(TP_COMMAND,cmd); vjHbg#0 %
cmd =['(entity:move Core 0 0 5.9493)']; \R~Lf+q
ddeexec(TP_COMMAND,cmd); #8PjYB
cmd =['(property:apply-name Core "Core")']; t* COzE
ddeexec(TP_COMMAND,cmd); 7 l?=$q>k"
?}W:DGudZ
%Create Lens w(vf>L6(
cmd =['(define Unite (bool:unite TIR Core))']; /( q*
ddeexec(TP_COMMAND,cmd); 62W3W1: W
cmd =['(define block (insert:block 100 100 100))']; r@_;L>
ddeexec(TP_COMMAND,cmd); G^+0</Q
cmd =['(entity:move block 0 0 -50)']; y"2c; *7[{
ddeexec(TP_COMMAND,cmd); -/h$Yb
cmd =['(define Lens (bool:subtract Unite block))']; kr3ZqMfeI
ddeexec(TP_COMMAND,cmd); %hXa5}JL
cmd =['(property:apply-name Lens "Lens")']; e@6}?q;
ddeexec(TP_COMMAND,cmd); 1Ao"DxZHy7
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%Close the DDE connection ~sM334sQ
ddeterm(TP_COMMAND); Fr3Q"(
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