Metal Halide Bulbs

projector bulbs generally fall under two categories, halogen and metal halide bulbs. The type of projector determines the type of projector lamp that consumers must buy.

Halogen Bulbs

A halogen bulb is a tungsten filament, a noble gas, and a bit of halogen in a case of transparent quartz. It has a strong yellow light, which makes reading easier without causing much strain to eyes. They are 10-20% more energy efficient and less costly. Halogen bulbs are used in projectors low to medium prices. Their lifespan is usually between forty and seventy hours. A halogen lamp still maintains a uniform brightness throughout its life.

Halide Bulbs

Metal halide bulbs are better known for their durability, versatility, high efficiency, excellent color rendering and compact size. They emit a very white light, which can sometimes appear bluish. These lamps are used in the middle projectors very good price. The most striking feature of a metal halide bulb is that it takes approximately 1000 to 2000 hours.

Comparison

A halogen bulb has a lifetime less compared to a metal halide bulb. The halogen bulb displays a uniform brightness throughout its life, but the brightness of the metal halide bulb continues to decrease over time. (It halved after 1000 hrs.)

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