Lighting

 

 

Lighting and controls is a huge, constantly changing, dynamic market. The ELECTRICAL CONTRACTOR lighting editorial listed below keeps current on technological innovations from LEDs, controls, and design to innovations in efficiency by traditional lighting formats. 

Organic LED (OLED) is a solid-state lighting technology with strong potential for architectural lighting. The LED is a compact, directional point source. Shielding prevents glare, while heat sinking removes internal heat. In contrast, OLED is a flat (less than 1/8-inch thick), diffuse area source.

Human perception of colors in their environment is dependent on light. As electric light sources have varying spectral emissions, the electrical industry relies on metrics to report, evaluate and predict how colors will appear under different light sources.

According to the U.S. Department of Energy (DOE), more than 360 million troffers (named for a cross between trough and coffer) provide general lighting in commercial building interiors.

Milestones in January and February raised the bar on energy efficiency in the lighting industry. In January, Energy Star Lamps V2.0 took effect, and it was predicted to significantly influence lamps promoted by utility lighting rebate programs.

More on Lighting

 
State-of-the-Art Snapshot: LEDs

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.


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Acuity Brand’s Trilia ceiling fixture, chosen by designer Leslie North for her home-based office, is marketed under the Winona Lighting nameplate.
The Other White LED

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.


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Cree LED lighting helps create an inviting environment in the parking structure of Presence Saint Francis hospital in Evanston, Ill. The hospital benefits from the energy efficiency of the multilevel sensor in the VG Series LED luminaires, which lowers output from 100 percent to 25 percent after seven minutes of no occupancy detection.
A Walk in the Park: LEDs in Parking Garages

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.


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Juno Lighting Group’s Aculux LED precision recessed luminaire maintains color temperature through a range of dimming levels.
Awaiting Take-Off: LED Lighting

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.


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In the Driver's Seat: LED Drivers

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.


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Safety Check: Lighting retrofits


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.


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Day And Night

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. 



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