Optics in LEDs for lighting

Light-emitting diodes (LEDs) have been changing the way we see the world since the 1960s. Their usage in everyday life is pervasive and continues to increase thanks to the cutting-edge research being done in the field of optics. To highlight breakthroughs in LEDs, the editors of Energy Express, a bi-monthly supplement to Optics Express, the open-access journal of the Optical Society (OSA), today published a special Focus Issue on Optics in LEDs for Lighting. The issue is organized and edited by Guest Editors Jae-Hyun Ryou and Russell Dupuis of the Georgia Institute of Technology.

"The papers in this Focus Issue represent the outcome of state-of-the-art research and development by recognized experts in the field of LEDs, said Ryou. "These latest advances are truly exceptional and will prove to be invaluable to advancements in lighting technology".

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Impact of Internet on Society

Internet Usage is continuously on the increase both in terms of number of users and the amount of activity. It serves as a medium for information dissemination among people and organizations regardless of physical distances and boundaries. These developments affect on the daily life of people and thus in general affect the whole society and its culture. The study highlights some of the developments caused due to Internet usage like e-commerce, e-banking, e-health, ematerialization, e-governance, e-learning and computer supported social networks.

During the study a local survey was conducted. The major objective of the survey was to analyze the changing social contexts and factors influencing the transformation from a real community to a virtual community by the adoption of Internet. Few of the survey results have presented in detail in the Survey Section.

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