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A snapshot of few key concepts about lighting with LED technology in particular

By Jessica Williams Subscribe to RSS | March 29th 2012 | Views:

When an object is heated, it emits electromagnetic wave which is a kind of energy. The hotter an object becomes, the greater the radiation from a given area. Whenever an object receives light, three things will happen: part of the light will be reflected back, part absorbed by the object, while rest will pass through the object depending on how much translucent the object is. It is well observed that lighting has an effect on our immediate mood and perception. We use black clothes during winter and while clothes during summer for obvious reasons. We use light in our homes that gives us a soothing experience. Entering into partnership with a home renovating agency can help you choose some really interesting light devices based on LED technology that can have an important effect on your health and wellbeing as well.

The LED consists of a chip of semiconducting substance doped with impurities to create a p-n junction. Current flows easily from the p-side or anode to n-side or cathode but not the reverse way. Charge particles (electron and holes) flow into the junction from electrodes with varying voltages. When an electron enters a hole, it falls into a lower energy level and releases energy in the form of a photon.

Today use of LED lighting devices include major and minor roadways and intersections, alley and lane ways, parking spaces, pedestrian crossing area, bicycle tracks, transport terminals, security lighting and recreational outdoor lighting. They are used prominently in text and video displays as well in advanced communication technologies for decades now. LEDs are extensively used in aviation lighting, automotive lighting, advertising, general lighting and traffic signals.

Newer LED devices are made keeping in mind latest guidelines like RP-8-00 American National Standard Practice for Roadway Lighting in which is recommended practices for lighting roadways, adjacent bikeways and pedestrian ways. It is crucial that such guidelines are carefully adhered to while designing any lighting system, be it a home, office, or governmental body.

There is extensive use of infrared LEDs in remote control of televisions, DVD players and many other home appliances today. The challenge for lighting engineers now is to come out with innovative optics with state-of-the- art light emitting diodes that extract the most power and efficiency from evolving LED devices. Lighting engineers involved in a LED project like the one by US-based Cree LED or Australia-based Valen Light have a clear strategy of optimizing lighting performance and reducing energy consumption. They are involved in developing cutting-edge LED street lights including the powerful street, area and canopy products that have International Dark Sky Association (IDA) approval and measured for performance using IESNA standards and guidelines. VLEDs are developed to replace outdated gas discharge luminaries. VLED street lighting systems and shelter lighting devices can be easily retrofitted with existing infrastructure. Latest optic designs by leading LED manufacturers ensure that existing pole spacing can be kept and up to 70 per cent of energy saved. This is all while lighting levels of current system is maintained that are designed for HPS, MV or MH gas discharge lighting.

Jessica Williams - About Author:
Valen Light Technologies is setting new benchmarks with solar street lighting and shelter lighting devices. To know more, why not visit them now at

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