Troffer Downlight

Global Lighting Technologies

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

The troffer backlight uses advanced 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 lightguide to create an assembly measuring 0.60 × 0.60 m, with a thickness of 0.01 m and a weight of >3 kg.

The company’s edge-lighting approach achieves maximum efficiency in light dispersion, producing products with a brightness of 24 lm at an output of 400 ±30 lx at 2 m, a color temperature of 4000 K/6000 K, and power consumption of 45 W.

Illuminating the troffer with the traditional fluorescent tube technology would have resulted in an assembly up to 0.127 m thick, according to the company. Its approach yields a slimmer, more lightweight, higher intensity backlight with an LED lifetime of about 30,000 h.

Because LEDs contain no mercury, the edge-lit troffer is environmentally friendly. 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.

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Published: June 2010