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LED Technology

LED Efficiency

Efficiency of LED devices continues to improve, with some chips able to emit more than 100 lumens per watt.

LED Performance is Temperature Dependent

Like other lighting devices, LED performance is temperature dependent. Most manufacturers’ published ratings of LEDs are for an operating temperature of 25 °C. LEDs used outdoors, such as traffic signals or in-pavement signal lights, and that are utilized in climates where the temperature within the luminaire gets very hot, could result in low signal intensities or even failure.

An LED is a Solid-State Lamp

An LED lamp (or LED light bulb) is a solid-state lamp that uses light-emitting diodes (LEDs) as the source of light. LED lamps offer long service life and high energy efficiency, but initial costs are higher than those of fluorescent and incandescent lamps. Chemical decomposition of LED chips reduces luminous flux over life cycle as with conventional lamps. 

Lifetime of LED Lamps

Solid-state devices such as LEDs are subject to very limited wear and tear if operated at low currents and at low temperatures. Many of the LEDs made in the 1970s and 1980s are still in service today. Typical lifetimes quoted are 25,000 to 100,000 hours, but heat and current settings can extend or shorten this time significantly. 

LATEST NEWS

Truly Green Solutions will demonstrate Universal Light™ Post-top & Bollard LED replacement lamps and FlexOptix™ area lighting technology at the 2014 IES Street and Area Lighting Conference.

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