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Super Vision suffers major setbacks in patent battle against Color Kinetics
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LEDs Magazine Review – October 2005
Packed with feature-length articles, the October 2005 issue of LEDs Magazine Review is now available. |
U.S. Energy Policy Act provides funding for solid-state lighting
The U.S. government has finally passed the Energy Policy Act of 2005, which will provide significant levels of funding for the development of white LED lighting technology. |
Accurate modeling of LED colors: a scientific approach
LED light sources are being used more frequently in large-scale applications, but planning them can be hampered by poor color rendering on computer screens. |
Cyberlux matches attributes of LED lighting to market needs
Emergency lighting and defense-related products have set the stage for US solid-state lighting specialist Cyberlux to begin to penetrate the general lighting market. LEDs Magazine spoke with Mark Schmidt, president and COO of Cyberlux, about the company's plans. |
Microcontroller-based LED drivers: topologies and trade-offs
Drivers based around microcontrollers can be simple to design and offer a number of advantages for controlling high-intensity LEDs. However, some limitations remain, as Pedro Pachuca and Rod Borras of Freescale Semiconductor discuss. |
Small companies fight for a foothold in white LED sector
The white LED area is a minefield of patents, cross-licensing agreements and infringement lawsuits involving the big five manufacturers. |
News & Analysis
Super Vision suffers major setbacks in patent battle against Color Kinetics, Philips takes control of LED maker Lumileds, US Energy Policy Act provides funding for solid-state lighting. |
Dimming method affects chromaticity of white LEDs
A study of dimming methods indicates that the lowest chromaticity shift among high-power white LEDs is observed for phosphor-converted LEDs dimmed using pulse-width modulation. |
Hella demonstrates white-LED headlamp technology suitable for production cars in 2008
All the major technical and regulatory barriers to implementing LED headlamps in production cars will be overcome by 2008, says Hella. |
Multi-watt LED light engines offer challenges and opportunities
Multi-watt class LED array light engines are emerging as viable replacements for current light sources. As Gareth Jones of Enfis describes, this brings new opportunities for application developers, as well as challenges for systems designers. |
Products
Selected new products from PLASA 2005 are among those featured in our Products section. |
EPO aims to improve patent classification in LEDs field
Having seen a steep increase in the number of patent applications related to solid-state lighting, the European patent office is now taking steps to improve its classification system. |
LED experts converge at the Solid State Lighting conference
General illumination, white LEDs and pulse-width modulation were among the subjects discussed during the Fifth International Conference on Solid State Lighting, writes David Nicol. |
IP issues influence fixture makers and LED suppliers
Jed Dorsheimer of Adams Harkness tells LEDs Magazine how the resolution of the Color Kinetics vs. Super Vision patent dispute could have a positive effect on the industry. |
LEDs in the mainstream: technical hurdles and standardization issues
A recent conference in the UK focused on the latest developments in LEDs and the ways in which they can be moved into the mainstream lighting market. Tim Whitaker reports. |
