Just like any light bulb, projector bulbs have an expected operating time, called lamp life. This value is expressed in hours and represents the number of hours before the lamp is at half its original brightness. ... Some lamps will fail sooner and this is part of the acceptable operating range of the rating.

How many hours does projector lamp last?

Most projector lamps last between 1,500 and 2,000 hours, but some can last up to 5,000 hours. Most projectors will need one to two bulb swaps during this time. Unlike other bulbs that go out once expended, the high-pressure mercury and xenon used in projector lamps cause bulbs to dim over time.

What is a lamp hour?

All projector lamps have an expected operating time, called lamp life. This value is expressed in numbers of hours, and is typically around 1,500 to 2,000 hours. Newer models claim 5,000 hours of lamp life and more.