Datasheet

22
L
e
n
s
A
l
ens
i
s an o
p
t
i
ca
l
com
p
onent w
i
t
h
two re
f
ract
i
ve sur
f
aces, at
l
east one
o
f
w
hi
c
h
i
s e
i
t
h
er convex or concave.
I
n
LED
l
am
p
s t
h
e
f
unct
i
on o
f
a
l
ens
i
s to
f
ocus or
di
sperse t
h
e
li
g
h
t an
d
t
h
ere
f
ore
d
e
fi
ne t
h
e
b
eam ang
l
e.
L
if
et
i
m
e
LED
l
amps
h
ave extreme
l
y
l
ong
li
ves.
H
owever t
h
e
i
r
li
g
h
t output
di
m
i
n
i
s
h
es
over time
(
see Fig. 3
)
.
OS
RAM defi nes the lifetime of its LED lamps as the
operating time in which the LED lamps produce more than 70
%
of their
initial light output. In doing so,
OS
RAM is already following the recom
-
m
endations of the International Electrotechnical
C
ommission
(
IE
C)
which
i
s current
l
y wor
ki
ng on an
i
nternat
i
ona
l
stan
d
ar
d
b
ase
d
on t
hi
s t
h
res
h
o
ld
v
a
l
ue.
➔
Fi
g. 3
L
u
men
(
Latin for light or torch
)
is the photometric unit of luminous fl ux. Luminous
fl
ux
i
s a measure o
f
t
h
e ent
i
re v
i
s
ibl
e ra
di
at
i
on em
i
tte
d
b
y a ra
di
at
i
on
so
ur
ce.
R
ecyc
li
ng
OS
RAM LED lamps are extremely durable and do not contain any mercury
.
H
owever
b
ecause t
h
ey conta
i
n e
l
ectron
i
c components t
h
ey must
b
e
di
spose
d
o
f
as waste e
l
ectr
i
ca
l
an
d
e
l
ectron
i
c equ
i
pment at t
h
e en
d
o
f
t
h
e
i
r
lif
e
.
R
e
fl
ecto
r
r
eturns
li
g
h
t
b
eams at certa
i
n ang
l
es
i
n t
h
e same way as a curve
d
m
i
rror.
Refl ector lamps such as PARATH
OM
®
PAR
16 or
MR
16 are equ
i
ppe
d
wi
t
h
suc
h
a re
f
erence or a
l
ens
.
R
es
i
stance to sw
i
tc
hi
ng trans
i
ent
s
Basically, LED lamps cannot be switched on and off indefi nitely.
OS
RAM
LED
l
amps can to
l
erate 100,000 sw
i
tc
hi
ng cyc
l
es an
d
more
.
C
RI
(C
olor Renderin
g
Index
)
i
n
di
cates t
h
e qua
li
ty o
f
co
l
or ren
d
er
i
ng o
f
art
ifi
c
i
a
l
li
g
h
t sources.
Th
e sym
b
o
l
u
se
d
i
s
R
a
.
Th
e max
i
mum va
l
ue
i
s 100
,
w
hi
c
h
means no
f
a
l
s
ifi
cat
i
on o
f
c
o
l
ors
b
y t
h
e
li
g
h
t source.
I
ncan
d
escent
l
amps can ac
hi
eve t
hi
s va
l
ue.
LED
l
amps
h
ave a typ
i
ca
l
va
l
ue o
f
R
a
80,
b
ut can ac
hi
eve
R
a
90 an
d
more
.
D
i
mma
bili
ty
The
OS
RAM range includes dimmable LEDs. Most of the conventional
dimmers available on the market
(
leading-edge
/
trailing-edge phase
dimmers
)
have been designed for incandescent lamps and are therefore
rated for higher minimum loads
(
W
)
than LED lamps offer. There may
t
h
ere
f
ore
b
e some restr
i
ct
i
ons
i
n terms o
f
f
unct
i
ona
li
ty.
D
ri
ver
s
C
ircuits that transform line voltage into a constant current for operating
t
h
e
LED
s.
H
eat
S
in
k
i
s the enclosure that serves to remove
/
radiate the heat from the LED
l
amp.
M
ater
i
a
l
s w
i
t
h
goo
d
t
h
erma
l
con
d
uct
i
v
i
ty are use
d
h
ere to trans
f
e
r
th
e
h
eat generate
d
i
ns
id
e t
h
e
l
amp to t
h
e surroun
di
ng a
i
r.
I
n
f
rare
d
ra
di
at
i
on
(
near IR radiation
)
comprises electromagnetic waves in the spectral
range
b
etween v
i
s
ibl
e
li
g
h
t an
d
l
ong-wave tera
h
ertz ra
di
at
i
on.
Hi
g
h
d
oses o
f
near
i
n
f
rare
d
ra
di
at
i
on
i
n part
i
cu
l
ar w
i
t
h
a wave
l
engt
h
o
f
780 to
3000 nm penetrates
d
eep
i
nto an
d
un
d
er
h
uman s
ki
n an
d
can
l
ea
d
to
h
ealth problems.
OS
RAM LED lamps do not emit any near IR radiation.
L
ED
(
Light Emitting Diode
)
is an electronic semiconductor component. If current
fl
ows t
h
roug
h
t
h
e
di
o
d
e
i
t em
i
ts
li
g
h
t w
i
t
h
a wave
l
engt
h
t
h
at
d
epen
d
s on
th
e sem
i
con
d
uctor mater
i
a
l
.
Dayli
g
h
t
10,00
0
6,000
5,
900
3
,
50
0
3
,
40
0
2,600
Coo
l Whit
e
W
a
rm Whit
e
0
.
5
0
.
4
0
.
3
0
.2
0
.1
0
Wavelen
g
th
[
nm
]
L
ED Dayli
g
ht
(
6,000 K
)
C
FLi
L
ED Warm White
(
3,000 K
)
H
alo
g
en
250
350
450
550
650
7
50
T
ime
[
h
]
1,000
10,000
25
,
000
L
i
f
etime (L
70
)
100
90
80
70
60
50
40
30
20
10
0
F
i
g. 3
:
Luminous fl ux of an LED lamp over time (with OSRAM Golde
n
D
RA
GON
®
P
lus LED) with a life of 25.000 hours. OSRAM defi nes end of life as 7
0
%
of
th
e
original luminous
fl
ux (
L
70
).
0
0
F
i
g. 2.2:
U
nlike other technologies the color spectrum o
f
LED lamps is entirely i
n
th
e v
i
s
ibl
e range
.
F
ig
. 2.1:
O
SRAM offers three different color temperatures
(
K
):
W
arm White, Cool White and Dayli
g
ht.
UV
(no
(
t
v
i
s
i
ble
)
)
t
IR
(no
(
t
v
i
s
ibl
e
)
)
t