第
34
卷第
2
期
2012
年
4
月
光学仪器
OPTICAL
INSTRUMENTS
Vo
1.
34
,
NαZ
April,
2012
文章编号,
1005-5630(2012)02-0072-04
一种利用自由曲面透镜的
LED
路灯配光设计与研究关
'1
1
罗元,毛建伟
(重庆邮电大学光电工程学院,
重
庆
400065)
摘要:随着半导体照明技术的发展,
LED
珞灯应用日益广泛
。
其二次回己光设计对
LED
Jit
otr
照
明具有重要的作用。
LEDl
吝灯应用中,为了使其照度和照度均匀度满足一定的要求,设计采用
了自由曲面透镜的二次配光
。
根据折射定律、目标照明面光分布和照度均匀建立自由曲面的方
程,数值法求得面型数据并导人建模软件拟合成透镜实体,对利用自由曲面透镜配光的
LED
及
LEDl
吝灯进行了光线追远仿真及分析。结果表明基于自由曲面透镜的
LED
Jit
otr
具有较好的照
度、亮度和均匀度。
关键词:二次自己光;自由曲面;照度均匀度,
LEDl
吝灯
中图分类号
:TN31
,
043
文献标识码:
A doi , 10. 3969/j. issn. 1005-5630.
2012.02.014
Design
and
research
of
LED
street
lamp
light
distribution
using freeform lens
LUOYua
η
,且也
4.
0
Jianwei
CSchoo
l
of
Opto
el
ect
r
onic
Enginee
r
ing
,
Chongqing
UnÎve
r
sity
of
Post
and
Teleco
mm
unicat
i
on
,
Chongqing
400065 ,
China)
Abstract
,
With
the
development
of
semiconductor
lighting
tε
,
chnology
,
more
and
more
LED
street
lamp
is applied.
The
design of
secondary
light
distribution
plays
an
important
role
in
LED
street
lamp
lighting.
In
the
application
of
LED
street
lamp
, in
order
to
make
the
illumination
and
the
illumination
uniformity
meet
certain
requirements
,
freeform
surface
lens
is
used
in
the
design
of
secondary
light
distribution.
According
to
the
laws
of
refraction
,
the
light
distribution
in
the
target
lighting
area
and
the
illumination
uniformi
町,
theε~quation
of
freeform
surface
is
established.
The
data
of
freeform
surface
can
be
obtained
by
numerical
method
,
and
the
coordinate
data
is
imported
into
software
to
generate
the
freeform
surface
lens
entity.
The
light
distribution
of
LED
and
LED
street
lamp
using
freeform
lens
is
simulated
and
analyzed.
The
results
of
lighting
simulation
and
analysis
show
that
LED
street
lamp
based
on
freeform
surface
lens
has
good
illumination
,
luminance
and
uniformity.
Key
wor'
也
second
田
y
light distribution, freeform surface, illumination uniformity, LED
street
lamp
LED(
发光二极管)作为光源的照明
,
具有节能、 高
效、环保及寿命长的显著优势,是全球最具发展前
提收稿日期
2011-1
0-07
基金项目重庆市科委资助项目
(CS
丁
C2009AC4187)
作者简介罗
元
0972-)
,女,湖北
宜
昌人,教授,
博
士,主要从事信息光学
等
方
面
的研究。