Products, Materials & Tools | May 25, 2010

GLT Brings LED-Based Edge-Lighting Technology to Ultra-Slim, Lightweight, Efficient Troffer Downlights

Global Lighting Technologies (GLT) has combined its edge-lit LED light guide technology with its mass production capabilities to create a new troffer downlight that is slim, light, efficient, and can be cost effectively manufactured in high volumes.

The troffer backlight utilizes advanced light extraction technologies to extract light precisely where needed, providing bright, uniform light in a thinner form factor without hot spots or dark areas. The LEDs are spaced along the edge of the troffer assembly against the light guide to create an assembly measuring 23.5” x 23.5”, with a thickness of only 0.35”, and a weight of less than 3 kg (6.6 lbs.).

GLT’s edge-lighting approach achieves maximum efficiency in light dispersion, with product now in production having a brightness of 24 lumens at an output of 400 ±30 lux @ 2m, a color temperature of 4000K/6000K, and power consumption of 45W. Future production modules will be even more efficient.

“Illuminating this troffer with the traditional fluorescent tube technology would have resulted in an assembly up to 5 inches thick,” according to Brett Shriver, GLT’s Director of Sales. “Our approach yields a much slimmer, more lightweight, higher intensity backlight with an LED lifetime of about 30,000 hours, and with three production facilities in China and Taiwan, we bring the advantages of mass production to a product that heretofore has been an expensive ‘one-off’ where the light guide had to be manufactured for each troffer. We can make them in the thousands with no differentiation from troffer to troffer.”

And, since LEDs contain no mercury, the edge-lit troffer is an environmentally friendly solution as well. It also reduces maintenance and power consumption and, when compared to a direct backlighting approach using LED arrays, minimizes thermal management issues as well as the number of LEDs required for efficient, uniform light dispersion.

Pricing for GLT edge-lit troffer backlights varies according to size, application, number of LEDs and quantity. Contact GLT for details.

For more information, contact Global Lighting Technologies, Inc., 55 Andrews Circle, Brecksville, OH 44141. Tel: 440-922-4584; Toll-Free: 866-922-4584; Fax: 440-922-4585. E-mail: Web:

About Global Lighting Technologies:
Global Lighting Technologies (GLT), Inc. was founded in 2000 to develop LED-based edge lighting technology for the latest generation of flat panel displays. GLT offers the world’s most efficient LED-based edge lighting technology as well as Microlens light extraction technology and improved manufacturing processes to provide backlighting packages that are thinner than ever for OEMs who need to meet increasing consumer demand for smaller, slimmer size with outstanding performance and more efficient light extraction. With 3 manufacturing facilities in the Far East, GLT is poised to deliver a better backlight at lower cost with faster turnaround.

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