An LED or light-emitting diode (LED) is an electronic semi-conductor device which gives off light as a bi-product. The LED as a single unit is low in light output, but when it is assembled with others into a lamp or light engine, it can then be used in light fittings
An LED or light-emitting diode (LED) is an electronic semi-conductor device which gives off light as a bi-product. The LED as a single unit is low in light output, but when it is assembled with others into a lamp or light engine, it can then be used in light fittings.
The LED marketplace is expected to grow at a rate of around 25% per annum over the coming years. LED lamps have a nominal lifespan of around 50,000 hours in many cases, and luminous efficacy that is far better than incandescent lamps, and significantly better than T8 fluorescent tubes, with some of the latest generation capable of more than 140 lumens per watt. With research into organic LEDs (OLED) and polymer LEDs (PLED), cost per lumen and light output per unit have been improving rapidly.
Like incandescent lamps (unlike most fluorescent lamps e.g. tubes and Compact Fluorescent Lamps), LED units reach full brightness without a warm-up time. The life of fluorescent lighting is also reduced by frequent switching on and off. However, LEDs do lose some light output over time due to degradation of the diode and its components. Also, the initial cost of LED lamps or luminaires is usually much higher than their fluorescent counterparts.
Some LED lamps are designed to be a direct replacement for incandescent or fluorescent lamps. However, LEDs do not emit light in all directions, and their directional characteristics affect the design of lamps and luminaires. LEDs need controlled direct current (DC) electrical power and an appropriate driver is needed. LEDs are adversely affected by high temperature, so LED engines typically include methods of heat dissipation such as heat sinks and cooling fins.
Hilclare are committed to pushing the boundaries with new technologies and also by assisting customers to achieve ever decreasing energy targets. The new Hilclare LED brochure illustrates what can be achieved by good research and design and is downloadable as a PDF document. Alternatively, a hard copy brochure can be ordered by contacting our Manchester sales office on 0161 274 3626 or by emailing firstname.lastname@example.org for a copy.