The light engine, as Lamina calls its disk-shaped product, is based around a new generation of high-powered light-emitting diodes developed by other companies.

Lumina’s array lacks the efficiency of the best traditional light sources and, with a price tag in the thousands of dollars, is also vastly more expensive. But the company says the technology is an important step in taking light-emitting diodes from keychain flashlights to the largest of lighting jobs.



“The problem people were having in taking advantage of these new bright L.E.D.’s was the packaging,” said Taylor Adair, the president and chief executive of Lamina, which is based in Westampton, N.J., and is a spinoff of the Sarnoff Corporation. “Now we have a solid-state lamp that produces enough lumens to be able to open up new lighting opportunities.”



By Lamina’s measurements, the disk, which is about five inches in diameter and uses hundreds of L.E.D.’s, produces 13,300 lumens of light. The company says this is about 10 times the brightness of any solid-state light previously demonstrated. The large metal-halide fixtures commonly used to light grocery stores, by comparison, generally emit 10,000 to 20,000 lumens.



Contrary to common wisdom, all light-emitting diodes produce heat. Until recently, however, L.E.D.’s, from the smallest ones on power switches to those on signs in Times Square, were designed to be viewed directly, reducing their energy requirements and heat output. The new high-output L.E.D.’s, however, are much brighter, allowing them to provide general illumination by being aimed at objects rather than viewers’ eyes.



“You can’t look at these ones,” said Nadarajah Narendran, the director for research for the Lighting Research Center at Rensselaer Polytechnic Institute in Troy, N.Y. “You’d go blind.”



More here.

0