| liunian |
2016-07-13 15:19 |
程序如下： CWnRRZ}r
% By Ruibin 08-9-25 }cg 1CT5
% Instruction：This program help design LED collimating lens , feedback aspheric parameters and several chief dimensions. zc>LwX}<
cHwN=mg]S
clear all;clc JRw)~Tg @
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% The Frist Step: Define independent parameters {^K&9s z
r=3.25; %选择开孔半径 w{Y:p[}
R=4.25; %定义曲面底部半径 1ka58_^
d=1; %设置透镜前方平板高度 <*$IZl6I
n=1.4935; %定义材料折射率 bw[K^/
dividing_angle=24; %定义Core与TIR的分界角 8#a2 kR<b
min_angle=1; %设置计算精度 QWK \6
N=4; %设定拟合非球面系数阶数 BctU`.
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% The Second Step：Caculate induced variable qTnk>g_oS&
angles_Core=(dividing_angle:-min_angle:0);angles_TIR=(90:-min_angle:dividing_angle); T- lHlm
num_Core=length(angles_Core);num_TIR=length(angles_TIR); \J{ %xW>
for i=1:(num_Core) luO4ap]*
a_Core(i)=(angles_Core(i)*pi/180); w Y r M2X@
k1(i)=cot(a_Core(i)); ; <|m0>X
k2(i)=(-k1(i)+(n^2*k1(i)^2+n^2)^(1/2))/(n^2*k1(i)^2-k1(i)^2+n^2); b_oUG _B3]
end 9 N@N U:M+
k1(num_Core)=999;k2(num_Core)=0; 4i Z7BD
for i=1:num_TIR u[coWaPsZ
a_TIR(i)=(angles_TIR(i)*pi/180); :FI 4GR* ?
k3(i)=tan((pi/2+asin(cos(a_TIR(i))/n))/2); u-~?ylh
k4(i)=tan(asin(cos(a_TIR(i))/n)); 2aW"t.[j
end 4> (OM|X=9
X0_TIR=R;X0_Core=r;Y0_TIR=0;Y0_Core=r*cot(a_Core(1)); 7vK}aOs0
</7?puVR
% The Third Step:Solve functions n6
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for i=1:num_Core %Solve the curve of Core },t n
syms x; GvD{ I;
f1=k1(i)*x; Pb@9<N Xm'
f2=k2(i)*(x-X0_Core)+Y0_Core; &V 7{J9
f=f1-f2; JUC62s#_z
x=double(solve(f));y=k1(i)*x; HVc d< :g0
X0_Core=x;Y0_Core=y; /'>#1J|TlK
Px_Core(i)=X0_Core;Py_Core(i)=Y0_Core; Klk[ h
end O8WLulo
for i=1:num_TIR %Solve the curve of TIR \BxE0GGky
syms x; VtC1TZ3-7
f1=k3(i)*(x-X0_TIR)+Y0_TIR; fk:oCPo
f2=k4(i)*(x-r)+r*cot(a_TIR(i)); 0%<x>O
f=f1-f2; Wq]Lb:& {a
x=double(solve(f));y=k3(i)*(x-X0_TIR)+Y0_TIR; '-m )fWf
X0_TIR=x;Y0_TIR=y; *ZA.O
Px_TIR(i)=X0_TIR;Py_TIR(i)=Y0_TIR; MzO4Yv" A
end Fm{`?!
[1 gWc`#
% The furth Step:Fitting the curve 7\1bq&a<
P_Core=polyfit(Px_Core,Py_Core,4); tV,Y38e
P_TIR=polyfit(Px_TIR,Py_TIR,4); H0\5a|X-
a).b k!G
% The fifth Step:Feedback chief dimensions of the lens and Create it Y ;WHjW(K
%Feedback dimensions of the whole lens ` l8^n0-
result='透镜尺寸如下：' y9L:2f\
Diameter_of_lens=2*Px_TIR(num_TIR) t9B]V
Thickness_of_lens=Py_TIR(num_TIR)+d :If1zB)
Diameter_of_Core=2*r }J&[Uc
Thickness_of_front_pannel=d mOvwdRKn
Bottom_thickness=R-r Iz<}>J B
Lowest_Core=P_Core(5) <kr%ylhIu
3mnq=.<(w
%Feedback dimensions of Lens part TIR
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result='TIR系数如下：' h tn?iLq
Thickness=Py_TIR(num_TIR)-P_TIR(5)+d S MdQ,n1]
Aperture=Px_TIR(num_TIR) a,sU-w!X'
Obstruction=r O0i[GCtP5
Position=P_TIR(5) 2_]"9d4
format short e; Cp 2$I<T
Aspheric=[P_TIR(4) P_TIR(3) P_TIR(2) P_TIR(1)] }+8w
format short; sOBy)vq?\
Z@I.socA
%DDE Connection J9
iQ W
TP_COMMAND = ddeinit('TracePro','Scheme'); f._FwD
%Create TIR RRGCO+ )*
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)))']; ,U#$Qb 12
ddeexec(TP_COMMAND,cmd); wZA(><\
cmd =['(entity:move TIR 0 0 -2.3712)']; x !o>zT\
ddeexec(TP_COMMAND,cmd); Gmi$Nl!~
cmd =['(property:apply-name TIR "TIR")']; 45;{tS.z,B
ddeexec(TP_COMMAND,cmd); ?Rj)x%fN
\)pT+QxZ
%Feedback dimensions of Lens part TIR /M;A)z
result='Core系数如下：' cDS6RO?
Thickness=Py_TIR(num_TIR)-P_Core(5)+d 6R+m;'
Aperture=r U0/X!@F-
Obstruction='None' v]tbs)x;h
Position=P_Core(5) <-:gaA`KM
format short e; d?)C} 2
Aspheric=[P_Core(4) P_Core(3) P_Core(2) P_Core(1)] )( |+z'
format short; > T,^n
{_v
%Create Core jc|"wN]
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)))']; H "H&uA9"
ddeexec(TP_COMMAND,cmd); U[b $VZ}
cmd =['(entity:move Core 0 0 5.9493)']; 5X5 &(S \
ddeexec(TP_COMMAND,cmd); Jm|eZDp
cmd =['(property:apply-name Core "Core")']; 4$oX,Q`#
ddeexec(TP_COMMAND,cmd); -$#'
2 V0gj
/&
%Create Lens 4A_}:nU
cmd =['(define Unite (bool:unite TIR Core))']; _[8BAm
ddeexec(TP_COMMAND,cmd); :6 ? &L
cmd =['(define block (insert:block 100 100 100))']; P d@y+|
ddeexec(TP_COMMAND,cmd); q1Vh]d
cmd =['(entity:move block 0 0 -50)']; at@B>Rb
ddeexec(TP_COMMAND,cmd); .r/6BDE"
cmd =['(define Lens (bool:subtract Unite block))']; VemgG)\
ddeexec(TP_COMMAND,cmd); 1)8;9
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cmd =['(property:apply-name Lens "Lens")']; X#$mBRK7
ddeexec(TP_COMMAND,cmd); %.kJ@@ _e
cCd2f>EHw
%Close the DDE connection uX-]z3+
ddeterm(TP_COMMAND); 8kz7*AO
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看看吧
