Why is LED lightning is getting more and more popular? What are its advantages?
ENERGY EFFICIENCY The main reason for the immense popularity of LED products is that they offer substantial energy savings, estimated at 30 to 90 per cent.
LONG LIFE SPAN – up to 50.000 hours.
ENVIRONMENTAL FRIENDLINESS – no harmful substances.
LED bulbs are recyclable, which means that they do not pollute the environment after their life is over. Long lasting bulbs are disposed of less often. LED bulbs are mercury-free. Products developed based on LED technologies also do not generate large amounts of heat, ultraviolet and infrared radiation. With low energy consumption, light-emitting diodes help reduce carbon emissions.
A VAST SPECTRUM OF COLOURS – you can get any colour you wish LED-based light sources have a high CRI (colour rendering index). It means that LED compact fluorescent lamps or lamps produce light in a variety of colours. They can be, hence, put to various uses. On top of that, light emitted by diodes is brighter and clearer than that of traditional light sources– with unchanged colour depth at the same time.
HIGH MECHANICAL RESISTANCE
DIRECTED LUMINOUS FLUX – no reflectors are required
QUICK TURN-ON TIME – measured in fractions of seconds
There is no warm-up time with LED bulbs, they reach maximum brightness and colour almost instantaneously. LED bulbs are on right away and fully bright, irrespective of the ambient temperature.
The light emitted by LED lighting is safe for people as regards wavelengths in the visible spectrum. Unlike energy-saving lamps or bulbs, LED-based products do not contain such harmful products as mercury or lead, and do not emit electromagnetic waves, which adversely affect the health of the people getting too close to them.
What to consider when choosing a LED bulb?
Manufacturers nowadays are eager to use watts. Power expressed in watts, however, does not pertain to light, but to electric current flowing through a diode (conduction voltage times the electric current).
As the value of the power supplied to a diode does not refer to luminous efficacy, such information should always come with the value of generated luminous flux expressed in lumens or to luminous intensity measured in candelas as well as with the emission angle.
Lumens measure the capacity of a light source to produce visible light in a unit area and they take into account the entire radiation emitted by a LED diode in all directions.
Do light-emitting diodes produce only one type of white light?
No. Light-emitting diodes come in a wide range of colour temperatures – starting from the classic incandescent light bulb with a very warm colour (2700 K), through the colour of halogen lighting (3000 K), ideally white sunlight (4500 K), up to cool (6000 K) and very cold shades (10 000 K) –typical of fluorescent lamps.