COLOUR RENDERING INDEX (CRI)
A measure of the degree of colour shift objects undergo when illuminated by the light source as compared with those same objects when illuminated by a reference source of comparable colour temperature. The reference source has a CRI of 100. Natural light (daylight) would also be 100.
CRI > 90 Excellent
CRI > 80 Good
CRI > 70 Poor
DALI CORRELATED COLOUR TEMPERATURE (CCT)
The description used to describe the effect of heating an object until it glows incandescently, the emitted radiation, and apparent colour, changes proportionally to the temperature; easily envisioned when considering hot metal in a forge that glows red, then orange, and then white as the temperature increases. Measured in degrees Kelvin.
<3300K Warm White
3300K-5300K Neutral White >5300K
Cool White
Luminous flux that reaches the working plane without being reflected from walls/ceiling or within the luminaire itself.
Warm 2700K
WHITE
2700K WARM
Warm White 3000K
WHITE
3000K WARM
White 4000K
4000K NEUTRAL
WHITE CORRIDOR FUNCTION
Refers to luminaires that when not required to emit 100% light output, switch to 10% output. This ‘standby mode’ allows the luminaire to provide a low level of illumination for a feeling of security so the area is not totally dark. Upon sensing movement, the output automatically and instantly switches to 100%. This is particularly useful in circulation areas such as corridors and stairwells.
Neutral 5000K
5000K NEUTRAL
WHITE
Cool White 6500K
WHITE
6500K COOL
DLOR
Downward Light Output Ratio is the percentage of luminous flux output from the lamp/luminaire that is emitted in the 180º angle below horizontal.
DOUBLE INSULATION
Also known as Class II, where two levels of insulation (such as two cable coverings) protect live parts from exposure.
DRIVER 100%
The driver is often the critical component in a LED luminaire or lamp, more so than the LED chip itself. The driver has to be matched to the power requirements of the LED chip and also have quality components. Drivers that use inferior components such as capacitors, will fail before the rated life of the LED chip, reducing the claimed life by as much as 50%.
EDGE LIT 10%
All LuxPanels are edge lit; this means that the LED chips are positioned vertically around the perimeter of the panel. This provides an excellent uniformly illuminated panel in a fixture as slim as 8mm.
CUT-OUT DIMENSION Size of hole required to install luminaire.
%
Stands for Digital Addressable Lighting Interface, where each driver and control component such as a sensor or switch has a unique address on the lighting installation. This allows for infinite configuration of the lighting installation and flexibility in the future.
DIMMING
Many Luceco luminaires are available as a dimmable version option. Generally, this requires a different driver to the standard fixed output driver and also may require additional wiring on site to operate/control the dimming function.
DIRECT LIGHTING
CUT OFF ANGLE
Small downlights can appear too intense and very glary, so cut off angle illustrates the point where the light source can’t be seen.
90º Cutoff Angle
66º Cutoff Angle
No Cutoff Angle
306
Specification Guide
GLOSSARY
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