• Don Klipstein's LED Main Page - This page has lots of LED information available.   
• LED-Based Lighting: Picture illustrates a simulation of the ray distribution in a solid plastic optic     
• LED Lighting - Resistant to shock and temperature extremes, LEDs may be the future of outdoor lighting.     
• LEDs move from indication to illumination - The versatile LED is now bright and colorful enough to use in applications beyond simple indicators and readouts, but you still need to grapple with issues of source drive, brightness, derating, spectral output, and viewing angle     
• Putting the LED In - To create clean lines and dramatic effects, the architect and designers needed to work with a flexible, powerful light source small enough to be built into fixtures and fittings. LEDs are now chosen to many applications for several reasons.     
• Sandia's bright idea: hybrids that emit full-spectrum light - . Researchers at Sandia National Laboratories have blended quantum dots with an LED to produce a solid-state white-emitting device that does not depend on phosphors or multiple light sources. Nanophosphors are engineered to emit the visible band using a single LED as the source.     
• The Brightest and Most Efficient LEDs and where to get them!     

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