General information, optic specifications, index

L956D957_SRC.QXD 11-03-2004 08:23 Pagina 12.19
K1 is a profile spot without any spill
light; this effect is achieved by equipping
the luminaire with a mechanical or
optical device that cuts off the spill
light; in this way, beams of different
shapes can be produced.
This classification can have high- or
low-intensity beams, depending on the
power and efficiency of the system.
K2 is a spot which stands out due to its
sharp shift to a minimal amount of spill
light; this type of beam is excellent for
creating theatrical and dramatic effects.
This classification is usually associated
with very high-intensity beams.
K3 has a hard shift from a highintensity
spot to spill light; the spill light
is seen as a narrow ring of light around
the spot.
This classification is usually associated
with high-intensity beams which are
very suitable for creating theatrical
effects.
K4 has a soft shift from a relatively
strong spot to a great deal of spill light;
the spill light assists considerably in
lighting the general surroundings.
K5 is a uniformly wide beam without
any visible spot and is, as a result,
suited to general or supplementary
lighting.
Beam characteristics – K-beam categories
Accent lighting requires a controlled beam of light, obtained by a
lamp and a reflector, which in many cases is integrated into the lamp
itself.The ultimate effect is largely determined by the characteristics
of the beam.The important factors are the intensity, the shape and
the dimensions of the spotlight created by the beam and the amount
of spill light. Spill light is the amount of light that is allowed to spread
outside the actual beam.
A 'hard-edged' beam is a light beam with little or no spill light and
gives a sharply defined contrast. It lends itself to very dramatic
lighting effects.
A 'soft-edged' beam has a higher degree of spill light and will result
in a lower contrast with the surrounding area.The effects are much
softer than those obtained with a hard-edged beam.To help you
make the right selection, Philips has a special classification for its
reflector lamps and lamp/reflector combinations, identifying five socalled
K-beam factors.The final effect is, of course, influenced by the
contrast between the ambient lighting and the lighting intensity of
the beam.
Identifying the five K-beam categories
The illustrations here give a good impression of the effects of the
various types of light beams identified by the Philips K-beam
classification.The relevant light beam creates these effects only,
without any supplementary lighting.
GENERAL INFORMATION, OPTIC SPECIFICATIONS, INDEX 12.19