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 ?
Special lamps: halogen tungsten lamp, high pressure sodium lamp, high pressure mercury lamp, metal halide lamp, photoflash lamp, spotlight, electric discharge lamp, arc lamp and ultraviolet and infrared ray lamps etc.
A ballast is a device used with an electric discharge lamp, such as fluorescent and high-intensity discharge lamps like those used in sporting arenas, to obtain the necessary circuit conditions that start the lamp and keep it operating.
However, preventing even faster growth will be the expected moderation in prices for many types of electric discharge lamps and rising competition from LEDs in the outdoor and motor vehicle markets.