These Big Chip Round LEDs & Modules increase system-level efficiency by as much as 30%, enabling customers to use a single LED to replace a 250W HID lamp
. They will accelerate the adoption of solid-state technology by displacing conventional light sources in high brightness lighting applications.
But even after decades of research the understanding of the physics inside the lamp is still challenging [Araoud 2010, Brok 2006, Dabringhausen 2005, Dreeben 2011, Hartel 1999, Wei[beta] 2005], where the examination of a multi component plasma is a much more complex task compared to a 'simple' mercury HID lamp
, which is the 'white mouse' of HID lamp
A standard HID lamp
offers only 40 per cent efficiency since its light can only be controlled using a reflector or refractor.
The light from an HID lamp
, said to be closer to the hue of natural light and thus thought to be better at illuminating a rain-wrapped road, comes from an electrode-ignited xenon atmosphere.
(In response to this competition, fluorescent and HID lamp
life is also improving.) At 75,000 hours of life, an LED troffer replacement could provide 25 years of service.
The old HID lamp
that cycles on and off is just wasting energy.
assemblies come in two types, the D2, which requires a remote starter circuit and the D1, in which the starter is self-contained in the base of the bulb assembly, as shown at right.
The system uses a central light source that is powered by a specially designed HID lamp
. An elliptical reflector collects its light and feeds it into multiple-strand, low-loss, glass "light pipes" which carry it through the body to a series of Fresnel lenses in the lamps.
San Bruno, CA, April 22, 2016 --(PR.com)-- The HID LED lamps run on universal voltage 120-277V and replace various HID lamp
types, including metal halide (MH), mercury vapor (MV) and high pressure sodium (HPS).
Up to this year, efficacies of even the most powerful LEDs and fixtures in the marketplace were typically just not powerful enough to replicate the punch of a traditional 400-W HID lamp
and fixture in the Threshold Zone.
Figure la shows a transmission image of a commercial HID lamp
after 20,000 hours of operation.
Next on the scene were high-pressure sodium (HPS) lamps (a type of HID lamp
), which produce a continuous (but narrow) spectrum of light.