Osram HQI-E 150 W/NDL CL Technical Information download pdf (Page 4)

4

1 Intr

o

duct

ion

T

he means o

f

g

eneratin

g

li

g

ht is technically com-

p

li

cate

d

.

Th

e

k

ey pr

i

nc

i

p

l

es re

g

ar

di

n

g

t

h

e opera-

tion o

f

these lam

p

s and instructions

f

or their use

a

r

e

lis

t

ed

belo

w

.

Th

ese app

li

cat

i

on

i

nstruct

i

ons a

dd

ress a

l

ar

g

e num

b

er

o

f

users, such as luminaire desi

g

ners, li

g

htin

g

plannin

g

en

gi

neers, operat

i

n

g

d

ev

i

ce

d

eve

l

opers an

d

reta

il

ers.

Naturall

y

, not all users will

f

ind all sections relevant,

but the aim has been to cover the interests o

f

as man

y

users as

p

oss

ibl

e

.

Metal halide lamps o

ff

er a number o

f

advantages that

f

avor their use in ever broader areas o

f

a

pp

lication.

T

hese include hi

g

h luminous e

ff

icacy, a lon

g

service

li

f

e and

g

ood colour renderin

g

. Because the li

g

ht is

g

enerate

d

i

n a sma

ll

space, t

h

e

di

sc

h

arge

l

amps

al

most correspon

d

to a spot

ligh

t source, w

i

t

h

a

dvanta

g

es in terms o

f

li

g

ht control and brilliance

of

th

e

ill

u

min

a

ti

o

n

.

Table 1: The properties o

f

metal halide lamps and resultin

g

application areas

R

e

q

u

i

rements

i

n t

h

e

app

li

cat

i

o

n

Propert

y

o

f

meta

l

h

a

lid

e

l

amp

s

Hi

g

h

room,

b

u

ildi

n

g

S

ho

p

S

tree

t

B

u

ildi

ng

illu

m

i

n

a

t

ion

Sp

orts

fac

iliti

es

I

n

d

ustr

y

T

r

ade

sho

w

F

o

y

e

r

The hei

g

ht requires a lot o

f

li

g

ht

Hi

g

h luminous

ﬂ

ux permits

f

ew

ﬁ

xtures li

g

ht point

s

X

X

X

X

X

Chan

g

in

g

lamps is difﬁ cult and

expens

i

v

e

Lon

g

service li

f

e with lon

g

er

c

h

an

g

e

i

nterva

l

s

X

X

X

X

X

X

L

on

g

operat

i

n

g

h

ours

Hi

g

h e

fﬁ

cacy and lon

g

se

rvi

ce

li

fe

X

X

X

X

X

Realistic reproduction o

f

hi

g

h

value sur

f

aces, pictures,

products and TV ima

g

e

s

G

ood colour renderin

g

X

X

X

Hi

g

h illuminance values

High luminous

ﬂ

ux permits

f

ew

ﬁ

xtures li

g

ht point

s

X

X

Lu

m

i

n

ai

r

es

should

be

s

m

all

or

di

scree

t

S

mall dimensions permit

com

p

act

l

um

i

na

i

re

s

X

X

X

Hi

g

h

mount

i

ng

h

e

i

g

h

ts an

d

w

id

e spac

i

n

g

d

eman

d

prec

i

se

ligh

t contro

l

Small arc tubes permit ver

y

g

oo

d

ligh

t contro

l

X

X

X

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