©CORE Lighting Limited 2011
3
2.
LIGHT HEAD
2.1.
LIGHT HEAD
The light head may be tilted to any position vertically up to +/-45 degrees for up-lighting or
spotlighting. A Nylok nut on each side of the head bridle assembly allows the swivel tension to be
adjusted.
2.2.
OPTICS
The unit is fitted as standard with a clear polycarbonate lens allowing 12 degree beam angle using 6
LED colour-mixing optics. Beam angles of 30° and 60° (medium and wide angle) are available as an
upgrade kit to the standard unit. The diffusers are extremely efficient with more than 90%
transmission efficiency.
Diffusers are built into the polycarbonate lens in front of the LED mixers allowing them to be
changed by removing the 4mm caphead screws around the outside. These screws must always be
replaced with similar type to prevent damage to the top plate.
The screws must not be over-
tightened as this will damage the polycarbonate lens. When replacing lenses, care must be taken
to ensure dirt is removed from the gasket material and head to ensure water tightness.
Beyond the standard range of diffusers the following beam angles are available by special request:,
20°, 40 & 80°. Elliptical versions are also available (eg 30° x 5°).
2.3.
LED COLOUR PERFORMANCE & LIFESPAN
Quality of colour is seen as a critical feature that has been built into this unit.
The LED range, the colours within the range and “binning” options have been selected very carefully
to provide possibly the best colour saturation available. This extends the extreme colour points
available on the colour triangle and therefore extends the number of possible colour combinations.
Update rate for the LED’s is a fast 488Hz. The resolution for colour change is 13bits providing a very
smooth dimming curve. This fast combination makes the units capable of lighting in TV work.
The head’s thermal design and correct current balancing through LED chains ensures that LED life
should exceed 50,000 hours. Significant effort has been made to ensure correct thermal design to
achieve this.