In 2014, the Royal Swedish Academy of Sciences awarded the Nobel Prize in Physics to a group of scientists for their 1990s invention of efficient blue light-emitting diodes (LEDs), which enabled LEDs to generate white light.
Light-emitting diodes (LEDs) are increasingly common in lamps and lighting fixtures in a range of settings. They are even beginning to dominate in some applications, including high-wattage area and streetlights.
With tens of thousands of parking garage structures containing hundreds of millions of spaces to accommodate the nation’s 135 million-plus registered passenger cars, the U.S. parking garage sector is a robust market that accounts for significant real estate in cities and towns nationwide.
A lighting revolution is just beginning, and light-emitting diodes (LEDs) are leading the way. By the Department of Energy’s (DOE) most recent count in May 2013, LEDs represented less than 4 percent of overall installed lighting in the United States.
The LED driver acts as a power supply for LED modules, regulating output voltage or current for the light source. It transforms and conditions incoming power (typically AC, but it may be DC) and drives the current to the LEDs.
According to the U.S. Department of Energy (DOE), in 2010, more than 75 percent of lighting systems installed in the commercial building sector were fluorescent, with the majority installed in recessed troffer luminaires.
Daylight may enter a building by way of toplighting (e.g., skylight) or sidelighting (e.g., window) apertures. Good design enables diffuse daylight to serve as a primary source of general illumination while avoiding glare and heat gain.
Residential interior lighting is as much art as science. A good residential lighting design is functional and comfortable, blends with the architecture and decor, and helps the owner personalize their home. The result is experienced as work, leisure, living, showcase, castle and sanctuary.
Light-emitting diode (LED) technology seems to be all the rage in the lighting industry, and those in the know are more than aware of its many benefits. However, for the average consumer, the world of LEDs is still an unknown.
“Space matters” is the new mantra as the office concept undergoes some radical rethinking. Today, square-footage is often decreasing as occupancy increases. Open landscapes rule as corner offices disappear. Cubicles are giving way to collaborative worktables. Work from home? No problem.
The light-emitting diode (LED) offers energy savings, lower maintenance requirements and other advantages compared to incandescent sources. However, many LED products perform poorly with existing dimmer controls.
The Sistine Chapel has an interesting history with light. For hundreds of years, it was primarily illuminated by candles, but the smoke left a layer of soot on the artwork, which had to be restored. Preserving Michelangelo’s masterpiece has been of prime concern.
Roughly 70 million U.S. street and roadway lighting fixtures—estimated to be a $200–300 million market—represent big business for electrical contractors, especially as this application increasingly converts to light-emitting diode (LED) technology.
Mobile lighting systems powered by hydrogen fuel cells are cleaner and quieter and now have a proven track-record in applications like nighttime construction, sports and entertainment events, and airport operations, making them ready for commercialization and broader use.
While wire and electric power delivery will remain a constant, the marriage between the two is being redefined. Wireless lighting and energy control are expanding from homes to office, healthcare, institutional and industrial settings.
As energy-saving automatic lighting controls become more popular for retrofit options in existing buildings, electrical contractors may find themselves in a position of estimating energy savings to justify owner investment.
In the healthcare-lighting arena, the improvements and increasing affordability of light-emitting diode (LED) products, along with advancements in lighting control technology, enable creative lighting designs that benefit patients and staff members.
A new report by Allied Market Research, “Global Light Emitting Diode (LED) Market,” estimates this market will reach $42.7 billion by 2020, registering a robust compound annual growth rate of 13.5 percent from 2014–2020. The Asia-Pacific region dominates the LED technology market because it houses a