HIDlámpák

HID lamps, or High-Intensity Discharge lamps, are a type of electric light source that produces light by means of an electric arc between tungsten electrodes housed inside a transparent or translucent fused quartz or fused alumina arc tube. The arc tube is filled with an inert gas and a small amount of mercury vapor. When the lamp is powered on, the electrodes heat up and emit electrons, which are then accelerated towards the opposite electrode by the electric field, creating a plasma discharge. This discharge excites the mercury atoms, causing them to emit ultraviolet light. The ultraviolet light is then converted into visible light by a phosphor coating on the inside of the lamp's outer bulb.

HID lamps are known for their high luminous efficacy, which is the amount of visible light produced per unit of electrical energy consumed. This makes them an energy-efficient choice for various lighting applications. They are commonly used in automotive headlights, projectors, and stage lighting due to their ability to produce a bright, white light. However, HID lamps have a shorter lifespan compared to other types of lamps, typically lasting between 1,000 to 2,000 hours. They also require a warm-up period before reaching full brightness and can be more expensive to purchase and maintain. Despite these drawbacks, HID lamps remain a popular choice for applications where high luminous efficacy and bright, white light are required.