| liunian |
2016-07-13 15:19 |
程序如下：
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% By Ruibin 08-9-25 ^. p d'
% Instruction：This program help design LED collimating lens , feedback aspheric parameters and several chief dimensions. Hr g~<-.La
@2`$ XWD
clear all;clc 3J_B uMV
2. 2G79 U,
% The Frist Step: Define independent parameters iLbf:DXK(
r=3.25; %选择开孔半径 ,J4rKGG
R=4.25; %定义曲面底部半径 TPF5 ?
d=1; %设置透镜前方平板高度 )ppIO"\
n=1.4935; %定义材料折射率 ,\RZ+kC>~
dividing_angle=24; %定义Core与TIR的分界角 BY5ODc$
min_angle=1; %设置计算精度 L)z`
N=4; %设定拟合非球面系数阶数 YApm)O={
a /{M2
% The Second Step：Caculate induced variable 6Bf aB:
angles_Core=(dividing_angle:-min_angle:0);angles_TIR=(90:-min_angle:dividing_angle); wj{[g^y%
num_Core=length(angles_Core);num_TIR=length(angles_TIR); X-<l+WP
for i=1:(num_Core) t) l
a_Core(i)=(angles_Core(i)*pi/180); MJ M<
k1(i)=cot(a_Core(i)); Js'j}w
k2(i)=(-k1(i)+(n^2*k1(i)^2+n^2)^(1/2))/(n^2*k1(i)^2-k1(i)^2+n^2); _ *.ImD
end n)uck 5
k1(num_Core)=999;k2(num_Core)=0; ,<t)aZL,A;
for i=1:num_TIR [v Tk*#Cl4
a_TIR(i)=(angles_TIR(i)*pi/180); l<)k`lrMX4
k3(i)=tan((pi/2+asin(cos(a_TIR(i))/n))/2); -(lC M/h
k4(i)=tan(asin(cos(a_TIR(i))/n)); EXEB A&*
end EM7Z g 6 5
X0_TIR=R;X0_Core=r;Y0_TIR=0;Y0_Core=r*cot(a_Core(1)); ku5vaP(
c0v6*O)
% The Third Step:Solve functions z=6zc-$y 9
for i=1:num_Core %Solve the curve of Core l {mC|8X
syms x; oe*CZ
f1=k1(i)*x; 61W[
f2=k2(i)*(x-X0_Core)+Y0_Core; >e^^YR^
f=f1-f2; F #)@ c
x=double(solve(f));y=k1(i)*x; phi9/tO\u
X0_Core=x;Y0_Core=y; e X{#F gFc
Px_Core(i)=X0_Core;Py_Core(i)=Y0_Core; cd(YH! 3
end
vLs*}+f
for i=1:num_TIR %Solve the curve of TIR s3[\&zt
syms x; ez1 4f$cJ+
f1=k3(i)*(x-X0_TIR)+Y0_TIR; )wNcz~
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f2=k4(i)*(x-r)+r*cot(a_TIR(i)); 'B wv-J
f=f1-f2; e0UL r!p
x=double(solve(f));y=k3(i)*(x-X0_TIR)+Y0_TIR; )Ah 7
X0_TIR=x;Y0_TIR=y; ctMH5"F&1
Px_TIR(i)=X0_TIR;Py_TIR(i)=Y0_TIR; (>SucUU
end ;~GBD]
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% The furth Step:Fitting the curve K/0Wp %
P_Core=polyfit(Px_Core,Py_Core,4); 2 QgD<
P_TIR=polyfit(Px_TIR,Py_TIR,4); im@QJ :
bJcO,M:2
% The fifth Step:Feedback chief dimensions of the lens and Create it hr W2#v
%Feedback dimensions of the whole lens E5yn,-GyE0
result='透镜尺寸如下：' jo BS{]
Diameter_of_lens=2*Px_TIR(num_TIR) U&W/Nj
Thickness_of_lens=Py_TIR(num_TIR)+d wpg7xx!
Diameter_of_Core=2*r /s@ j{*Om
Thickness_of_front_pannel=d WOQ>]Z
Bottom_thickness=R-r }=d}q *
Lowest_Core=P_Core(5) .q<5OE(f
@rS(3wu_&
%Feedback dimensions of Lens part TIR G_ ` Ae%'h
result='TIR系数如下：' #$;}- *
Thickness=Py_TIR(num_TIR)-P_TIR(5)+d j JD*s/o
Aperture=Px_TIR(num_TIR) ue*o>iohB
Obstruction=r 8?1MnjhX10
Position=P_TIR(5) >P ~j@Lv
format short e;
tYp 185
Aspheric=[P_TIR(4) P_TIR(3) P_TIR(2) P_TIR(1)] /
5 /m x
format short; F#^/=AR'
]wwN mmE
%DDE Connection m=25HH7enb
TP_COMMAND = ddeinit('TracePro','Scheme'); FXul
u6"SX
%Create TIR 4 8Jt1^
cmd =['(define TIR (insert:lens-element "PLASTIC" "pmma" (list 0 0 7.0306e-002 1.2580e-001 -2.5732e-003 -2.5281e-006) 18.6774 (list 0 0)(list "cir" 13.6051 0 0 0)(list "cir" 3.25 0 0 0)))']; mD%IHzbn
H
ddeexec(TP_COMMAND,cmd); 3+&k{UZjt
cmd =['(entity:move TIR 0 0 -2.3712)']; F!g;}_s9
ddeexec(TP_COMMAND,cmd); vxS4YR b
cmd =['(property:apply-name TIR "TIR")']; |rI; OvZ\
ddeexec(TP_COMMAND,cmd); urg^>n4V]
niyI$OC
%Feedback dimensions of Lens part TIR <cxe
result='Core系数如下：' [X7gP4
Thickness=Py_TIR(num_TIR)-P_Core(5)+d )J?8"+_Y
Aperture=r 1a mEQ
Obstruction='None' ipE|)Ns
Position=P_Core(5) KA>QW[HX
format short e; k t
|j]:
Aspheric=[P_Core(4) P_Core(3) P_Core(2) P_Core(1)] ~~ @dbB
format short; `FwE^_9d
%Create Core j`#H%2W\;
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)))']; ' g d=\gV
ddeexec(TP_COMMAND,cmd); ) q`.tsR>
cmd =['(entity:move Core 0 0 5.9493)']; P`avn
ddeexec(TP_COMMAND,cmd); Y`3\Z6KlV
cmd =['(property:apply-name Core "Core")']; <"8F=3:uk
ddeexec(TP_COMMAND,cmd); RXw1HRR$V
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%Create Lens cG&@PO]+.
cmd =['(define Unite (bool:unite TIR Core))']; !<out4Mz"
ddeexec(TP_COMMAND,cmd); 4I9Yr
cmd =['(define block (insert:block 100 100 100))']; NKc<nYdK?
ddeexec(TP_COMMAND,cmd); S$gLL kD1
cmd =['(entity:move block 0 0 -50)']; q/Zs]Gz
ddeexec(TP_COMMAND,cmd); KWM.e1(
cmd =['(define Lens (bool:subtract Unite block))']; m6'9Id-:L
ddeexec(TP_COMMAND,cmd); \58bz<u"
cmd =['(property:apply-name Lens "Lens")']; xUNq!({T
ddeexec(TP_COMMAND,cmd); ky&wv+7
%`~+^{Wp
%Close the DDE connection ^j2ve's:
ddeterm(TP_COMMAND); fhyoSRLR:
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看看吧
