NEWS REVIEW
Cree launches three new high density LED arrays to redefine LED lighting
CREE says that with three new LED arrays, it has redefined what is possible for LED lighting in high-intensity applications.
The Cree XLamp CXA2590, CXA1850 and CXA1310 LED arrays double the light output of existing standard-density CXA LED arrays without increasing the size.
This increase in lumen density delivers new levels of light intensity, which enables the complete replacement of ceramic metal halide (CMH) light sources, expands the possibilities of LED spotlights and enables applications that could not be addressed by previous LED technologies.
“The beauty of these new high-density LED arrays from Cree is that they are helping us bring products to the market that currently don’t exist,” said Mike Wang, vice president, lighting engineering, Edison Price Lighting, Inc.
“Never before have we been able to harness such a large amount of light in such a small package, which can help us improve our lighting designs and address a number of applications that we previously could not.”
By emitting more than 15,500 lumens from a 19 mm light source, the CXA2590 LED array enables luminaires with the same centre beam candlepower (CBCP) and light quality of a 150-watt CMH light source at lower power, longer lifetime and with better control.
Delivering more than 9,000 lumens from a 12 mm light source, the CXA1850 LED array enables lighting solutions with the same CBCP and light quality as 70-watt CMH while using half the power.
The CXA1310 LED Array provides more than 2,000 lumens in a 6 mm light source, which allows lighting
manufacturers to design smaller, more efficient track lights, reduce the size of halogen replacements by half and deliver twice the CBCP of CMH at 30 percent less power.
“The high-density LED arrays from Cree are extremely impressive,” says Kenny Eidsvold, president, Intense Lighting.
“We are looking forward to using these products in applications requiring very high centre beam candlepower that previously could not be achieved with LED-based solutions.”
IQE 850nm VCSELs achieve record power efficiencies
IQE’s laser epiwafer technology has been employed to develop ultra-high efficiency optical interconnects reported in two papers presented at Photonics West by Technische Universität (TU) Berlin.
VCSEL wafers, manufactured at IQE’s Cardiff facility were used by researchers at TU-Berlin to produce high-performance communications lasers that achieved error-free operation at speeds up to 40Gb/s with record low energy consumption. The VCSELs demonstrated extreme temperature stability during high-speed operation up to 85°C. Expanding growth in data communications is creating a bottleneck as demand for higher performance battles with the need to reduce power consumption. This is driving the move from copper cables to optical fibre communications, which is essential in enabling the transmission of the high data volumes demanded from cloud computing, big data and the internet
early adopters of VCSEL technology to help reduce energy demand and are likely to continue to drive the trend for optical communications for industrial and commercial applications.”
of thing. The efficiencies achieved with VCSELs are a critical factor in reducing the overall energy consumption of optical interconnects used in data centres.
IQE President and CEO, Drew Nelson, comments, “Today’s energy hungry data centres are increasingly co-located alongside major industrial power plants. Data volumes are forecast to continue growing and with more than twenty billion devices being interconnected by 2020, the energy demand is rapidly becoming unsustainable. Data centres are already
Dieter Bimberg, a professor and head of the Solid State Physics Institute adds, “Error-free operation of 850 nm VCSELs at 25Gb/s was achieved with record-low dissipated energy of 56fJ/ bit. This is the lowest reported value of dissipated energy at error-free operation for any semiconductor laser diode at any wavelength or bit rate.”
“This result is achieved at a low current density of 10kA/cm2
, demonstrating the
suitability of our devices for application in reliable and sustainable commercial optical interconnects. At 40Gb/s the IQE/ TU-Berlin VCSELs dissipate only 108fJ per transmitted bit which is at least four times less than any other published result for semiconductor laser diodes.”
March 2014
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