|
Creative Gadgets | ||||||||||
| ||||||||||
|
Lumileds Lighting - Leading the revolution of light through technology and market leadership in solid state lighting
Lumileds is founded in 1999 as a joint venture between Agilent Technologies (a company of Hewlett Packard) and Philips Lighting. Lumileds Headquarters are based in San Jose (Cal) USA, right in the hart of Silicon Valley, with regional operations in the Netherlands and Malaysia and sales offices throughout the world. What is Luxeon? Luxeon emitters are the highest flux LEDs in the world, delivering the brightest solid-state lighting solutions available. Luxeon white produces more than 20 lumens per Watt, and Luxeon emitters are 10 to 20 times brighter than standard LEDs, enabling luminous densities of 5 to 20 times higher. Luxeon is an optimum light source. Lasts longer than any other light source—more than 10 years Luxeon contains solid-state technology made in Silicon Valley using technology similar to those used in the latest microprocessors. Unlike typical conventional light sources, LEDs do not fail catastrophically; meaning they do not dramatically burn out and cease to function. In many applications Luxeon will last for more than 10 years of operation. See image chart below. Reduced maintenance costs Since Luxeon lasts at least 10 times longer than a typical light source, there is no need to replace the light source, thereby reducing or even eliminating ongoing maintenance costs and periodic re-lamping expenses. More energy efficient Be the environmental solution. Luxeon is more energy efficient than incandescent and most halogen light sources, and is fast approaching the efficiency of fluorescent. Robust, solid-state lighting Luxeon power light sources are solid-state devices. There are no moving parts, nothing to break, rupture, shatter, leak or contaminate the environment. Superior lumen maintenance—by design Luxeon power light sources contain no epoxy. Epoxy is prone to optical decay overtime, resulting in poor lumen maintenance. Luxeon technology delivers superior lumen maintenance compared to other solid-state sources and conventional lighting. Portable lighting Application
About DC Voltage / Current Regulation on flashlights
A typical flashlight (without regulation) starts dimming as soon as you turn it on. This is because the battery drops it voltage as it is drained. After 15 minutes or so, a typical light could be as much as 1/2 the brightness as when it was first turned on. The rate of dimming varies with battery type, flashlight design, etc. LEDs are even more prone to dimming compared to incandescent (bulbs) when used in high brightness designs. This is because incandescent bulbs have a slight self-regulating effect. Some manufacturers advertise their LED flashlights with incredible claims like, "over 50 hours of run time!", etc. Yes, these lights will produce light for over 50 hours but the light will be quite dim at that point. Didn't you buy that light to be as bright as when you bought it at the store?
Another advantage to regulated lights is that is makes it easier to use your batteries up completely. Non-regulated lights may be begging you to change out the batteries when there is still 50% power left.
Adobe PDF info: Click here for the The 10 Myths about LEDs
| ||||||||||
Web Dynamics 2004 |
[Hit Counter]