High-intensity discharge lamp

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High-intensity discharge lamp

A lamp that produces light by passing an electrical current through a gas or vapor under high pressure. HID lamps have a long life and consume little energy to produce a great amount of light. However, they distort the color rendition of objects and are used mostly as ambient lighting for commercial interiors. Ballasts are required to start the lamp. Types include mercury vapor lamps, metal-halide lamps, and sodium vapor lamps. The different types contain different gases, which produce different colors of light.

high-intensity discharge lamp

One of a group of mercury, metal halide, or high-pressure sodium lamps.
References in periodicals archive ?
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.
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 research.
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.
Tenders are invited for 150 W Metal Halide Lamp Hid Lamp - As Detailed In The Enclosure
In response to this competition, fluorescent and HID lamp life is also improving.
HID lamp 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.
Tenders are invited for Copper Wound Vpit/Ballast,150W With Tappings For 240V, 220V And Common, Suitable For 150W Integral Fittings Of Mh/Hpsv Hid Lamp.
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).
Figure la shows a transmission image of a commercial HID lamp after 20,000 hours of operation.