Lighting Technology - Häfele e@sy link Online Catalogue

Page/Product LED Lighting Technology
Heading - F1
Cone of light
6400 K 60º Distance
62 lx
20 lx
10 lx
7 lx
1
2
XVIII Lighting Technology
1 2 3
The light output is noted in the left-hand column. The
correlated colour temperature of the light is noted in
the header in Kelvin (K). The Lux (lx) values for the light
appear in the lines below, depending on certain
distances from the light (see column 3).
The angle of radiation is marked in the centre column.
The angle of radiation of the light is specified in
degrees (º) in the header. The lines below show the
illuminated area depending on certain distances from
the light (see column 3).
Technical terms
Light colour/colour temperature
The light colour is a specification of the colour
appearance of a light source and is measured in Kelvin
(K). The lower the Kelvin value, the warmer the light.
Sources below 3200 K are considered “warm”, while
those above 4000 K are considered “cool” sources.
Luminous efficacy
The luminous efficacy is the indication of the
illuminance in relation to a surface and its distance. It
is indicated in Lux (lx).
Comparison of lighting systems
Light Wattage
in W
A
3
250 mm
500 mm
750 mm
1000 mm
The right-hand column contains the distances for
which the illuminated area and the associated Lux
value (lx) were measured.
A
Example for a cone of light at point
The lamp generates light similar to a spotlight with 60 lx
at a distance of 1000 mm.
Light output
The light output determines the luminous intensity or
quantity of light. It is indicated in Lumen (lm).
Colour rendering index
The colour rendering index is a parameter that can be
used to compare the colour rendering quality of light
sources at the same colour temperature.
Light ouput
in lm/W
Halogen 12 V 10 - 20 27 - 28 60 - 95
Fluorescent lamp* 8 - 58 80 - 110 50 - 90
LED 0.8 - 4.8 30 - 90 70 - 95
*with electric ballast
Colour rendering
index Ra