Understanding LED Lighting

Understanding LED lighting

Lights, lamps, LEDs and bulbs

An LED lamp is a lighting product that is assembled into a lamp (or light bulb) for use in lighting fixtures. LED bulbs don’t emit heat or ultraviolet light, thus require much less electricity than regular incandescent or CFL bulbs making them a super energy efficient lighting option. 

LEDs are fast becoming the biggest innovation in lighting since the pioneering work of Thomas Edison way back in 1880. As the first really new light source in a very long time, LEDs are set to be in widespread use in many domestic and commercial lighting applications in the near future. LED bulbs can result in energy savings by as much as 80%.
Today’s LEDs produce far more useful quantities of light than earlier types and are found in every area of lighting application.
 
Their advantages over conventional light sources are long life, efficiency and small size. Many of the lamps used in our lighting range will last for 30,000 hours plus and all operate using very low power.

Halogen bulbs vs incandescent bulbs

Incandescent bulbs, including halogen bulbs, produce light by heating a filament of tungsten metal until it is white hot. In a normal incandescent bulb, the tungsten slowly vaporizes and deposits on the inside of the bulb until it is too thin to carry an electric current and the bulb burns out.

Choose the right LED bulbs by understanding their descriptions

Understanding LED bulb descriptions will help you choose the right bulbs for your home or business.

Colour rendering

How well a light source reveals colours is often denoted by the initials CRI, Colour Rendering Index. It compares the light source such an LED with a reference standard such as daylight or a filament lamp. Until recently, the comparison was based on eight standard colours and known as Ra8. However, the preferred measure for LEDs is Ra14. This has additional saturated colours and gives a better indication of the LED’s ability to reproduce colours.

Colour temperature

Whether the light emitted looks cool or warm is known as the colour appearance or colour temperature, abbreviated to CCT. It is often shown in sales literature as degrees Kelvin (K). Warm LEDs, 2700K or 3000K, are used where you want a relaxing light. Typical applications would be homes or restaurants with a warm atmosphere/ ambience. Indoors, they are best suited to low levels of illumination. 

Cool LEDs are mostly used in fast food restaurants or buildings with lots of glass and steel. Indoors, they work better at high levels of illumination – at low levels they can appear dull or grey. Outside, cool LEDs are good for lighting water features such as fountains. In-ground pavers for wayfinding and exterior steplights would also use cool LEDs. Apart from their greater efficiency, cool light is associated with night-time; think how moonlight appears.

Lumens

A lumen is the amount of light a bulb admits. The higher the lumen, the greater the output of light, though as a bulb ages the amount of lumens it puts out decreases. The LED bulb lumens rating for the traditional 60 watt incandescent bulb replacement is around 800.

LED bulb life Hours

An LED bulb life span can last up to 100,000. In comparison a halogen bulb will last as much as 3,500 hours. LED bulbs don’t need to be replaced for a very long time which is just one of many factors making to its lifetime energy savings advantage.

LED lamp energy savings calculator

You've read about LED lighting and the benefits it offers. See for yourself by calculating the energy savings you’ll achieve by switching to a LED system. Also find out how long it will take to recoup your full investment for the new system.