High-Performance Light Guides Lower Backlighting Costs

July 7, 2003
Portable and handheld devices can now take advantage of the high-performance, low-cost MicroLens family of light guides. For color cell phones, there's an assembly with a 30- by 22- by 0.8-mm output display area. Output luminance is 3000...

Portable and handheld devices can now take advantage of the high-performance, low-cost MicroLens family of light guides. For color cell phones, there's an assembly with a 30- by 22- by 0.8-mm output display area. Output luminance is 3000 cd/m2 for a 1.5-in. diagonal screen. It uses two l5-mA LEDs and costs from $0.75 to $1.25. For PDAs, there's a 45-mm2 assembly with 2000 cd/m2 luminance for a 2.5-in. diagonal screen that costs about $6. With MicroLens technology, various LCDs or the entire display assembly can be mounted into the host application.

Global Lighting Technologieswww.glthome.com; (866) 922-4584

About the Author

Roger Allan

Roger Allan is an electronics journalism veteran, and served as Electronic Design's Executive Editor for 15 of those years. He has covered just about every technology beat from semiconductors, components, packaging and power devices, to communications, test and measurement, automotive electronics, robotics, medical electronics, military electronics, robotics, and industrial electronics. His specialties include MEMS and nanoelectronics technologies. He is a contributor to the McGraw Hill Annual Encyclopedia of Science and Technology. He is also a Life Senior Member of the IEEE and holds a BSEE from New York University's School of Engineering and Science. Roger has worked for major electronics magazines besides Electronic Design, including the IEEE Spectrum, Electronics, EDN, Electronic Products, and the British New Scientist. He also has working experience in the electronics industry as a design engineer in filters, power supplies and control systems.

After his retirement from Electronic Design Magazine, He has been extensively contributing articles for Penton’s Electronic Design, Power Electronics Technology, Energy Efficiency and Technology (EE&T) and Microwaves RF Magazine, covering all of the aforementioned electronics segments as well as energy efficiency, harvesting and related technologies. He has also contributed articles to other electronics technology magazines worldwide.

He is a “jack of all trades and a master in leading-edge technologies” like MEMS, nanolectronics, autonomous vehicles, artificial intelligence, military electronics, biometrics, implantable medical devices, and energy harvesting and related technologies.

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