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Lighting design using lumen categories<br />
Designing a lighting system using<br />
lumen categories simplifies the<br />
process by providing an inital<br />
selection of suitable lamps and<br />
wattages. Irrespective of the type<br />
and efficiency of the lamp, the<br />
luminous flux indicates the available<br />
light output. Having identified<br />
the lighting task, the required<br />
luminous flux can be derived<br />
using criteria such as object size,<br />
lighting distance and ambient<br />
brightness. The lumen table shows<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
the lamps available in each lumen<br />
category. Due to different light<br />
output ratios, the lamps may produce<br />
the same luminous flux but<br />
from different wattages.<br />
<br />
Luminous flux<br />
The luminous flux describes the<br />
total light emitted by a source. It is<br />
calculated using the spectral radiant<br />
power relative to the spectral sensitivity<br />
of the eye.<br />
Unit: Lumen (lm)<br />
Luminous efficacy<br />
The relation of the luminous flux<br />
emitted to the wattage of a lamp.<br />
Unit: Lumen/Watt (lm/W)<br />
Technology<br />
LED vary chrome<br />
Luminous efficacy<br />
(lm/W)<br />
29<br />
Luminous flux (lm)<br />
10W<br />
20W<br />
LED warm white<br />
47<br />
1.7W<br />
3.6W<br />
10W<br />
14W<br />
28W<br />
42W<br />
LED daylight<br />
white<br />
62<br />
1.7W 3.6W 10W 14W 28W 42W<br />
Incandescent<br />
lamps<br />
15<br />
100W 150W<br />
Low-voltage<br />
halogen lamps<br />
25<br />
20W 50W 75W100W150W<br />
Tungsten<br />
halogen lamps<br />
22<br />
60W 100W 150W 300W 500W 1000W<br />
Compact<br />
fluorescent<br />
lamps<br />
87<br />
9W 18W 26W 32W 42W 55W<br />
Fluorescent<br />
lamps<br />
94<br />
24W 28W<br />
35W 58W<br />
Metal halide<br />
lamps<br />
92<br />
20W<br />
35W 70W 150W 250W 400W<br />
High-pressure<br />
sodium lamps<br />
49<br />
50W<br />
100W<br />
10 50 100 500 1000 2000 5000 10000 50000<br />
Efficient lamps<br />
ERCO provides a wide range of<br />
products for use with the economical<br />
and long-lasting metal<br />
halide lamps, as well as for compact<br />
fluorescent lamps. ERCO is<br />
also strongly committed to the<br />
development of LED lighting tools.<br />
LED varychrome<br />
LED warm white<br />
LED daylight white<br />
Incandescent lamps<br />
Low-voltage halogen lamps<br />
Halogen lamps<br />
Compact fluorescent lamps<br />
Fluorescent lamps<br />
Metal halide lamps<br />
High-pressure sodium lamps<br />
LED<br />
LED<br />
LED<br />
A<br />
QT-NV<br />
QT, QPAR<br />
TC<br />
T<br />
HIT-CE<br />
HST<br />
20<br />
40<br />
60<br />
80<br />
100<br />
(lm/W)<br />
4 ERCO <strong>New</strong> <strong>Products</strong> 2009 www.erco.com
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