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GLOSSARY OF TERMS


PHOSPHOR A coating of phosphorescent material which photons from a royal blue LED pass through causing those photons to exit with a different colour property.


PHOTOMETRIC DATA Is a generic term for light output and distribution data for a lamp or luminaire and can be shown in many formats. Generally data is produced following the IES or ELUMDAT method to provide a .ies or .ldt computer file for use in a lighting design program such as Relux or Dialux. Photometric data is available for a wide selection of Luceco luminaires from our website.


POWER FACTOR The active power divided by the apparent power (i.e., product of the rms input voltage and rms input current of a driver).


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CRI 80


POWER FACTOR CORRECTION In an electronic device, such as an LED lighting fixture, a system of inductors, capacitors, or voltage converters to adjust the power factor of electronic devices toward the ideal power factor of 1.0.


REACH Registration, Evaluation, Authorisation & restriction of Chemicals. The EU Directive covering the use of hazardous chemicals used in the manufacturing process and supply of products.


REMOTE LED DRIVER Some LED lights in our range use a remote plug and play LED Driver, that offers flexibility to select either a fixed output, dimmable driver or emergency versions, with all being interchangeable.


REMOTE PHOSPHOR A phosphor conversion technique in which photons from a royal blue LED pass through a phosphor material that is not attached to the LED chip.


RoHS Restriction of Hazardous Substances (2002/95/EC) is an article 95 directive, meaning it is across all European Union member states. Since July 1st 2006 the use of hazardous substances is restricted in products, to prevent environmental harm. The prohibited substances are Lead, Mercury, Cadmium, Hexavalent Chromium, Polybrominated Biphenyls and Polybrominated Diphenyl Ethers. All relevant Luceco products comply.


SELF-CONTAINED The most common type of Emergency lighting luminaire, where all of the components are within one Emergency luminaire. This can include gear boxes connected directly to individual luminaires but outside the main luminaire housing. If within 1m, it is classed as self- contained.


SMDs Surface-mount LEDs.


SOURCE LUMENS (LM) Source or Chip lumens is the output of the LED array and does not allow for any reduction or increase from the luminaire.


SOURCE WATTAGE Also could be referred to as chip wattage is for the LED only and does not include any control gear.


158 LIGHTING POSSIBILITIES


THERMAL MANAGEMENT Controlling the operating temperature of the product through design, examples include heat sinks and improved airflow.


Tp(a) Diffusers used in recessed luminaires are classified in relevance to their resistance to fire and spread of flame. TP(a) is the highest classification but has lower efficacy due to the compromise in light transmittance.


Tp(b) Diffusers are acceptable for the majority of applications, following the 2013 revision of the building regulations. Approved Document B – Fire Safety: Volume: Building other than dwellinghouses, includes further detail.


ULOR Upward Light Output Ratio, the percentage of light emitted from a lamp or luminaire above the horizontal plane.


%


ULTRAVIOLET (UV) Electromagnetic radiation with wavelength shorter than that of visible light. LEDs emit minimal UV and therefore do not attract insects or potentially damage sensitive materials illuminated by them.





UTILISATION FACTOR In lighting design, the proportion of the luminous flux emitted by a light source, which reaches the working plane.


VOLTAGE


The term used to describe the electrical potential difference between oppositely charged conductors.


WATTAGE The power consumed by the LED.


5W LED


TASK LIGHTING Localised lighting intended for a specific task.


TECHNICAL


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