nbspHow many hours will my projector lamp work?
Just like any light bulb you would use for another purpose, projector bulbs have an expected operating time, called lamp life. This value is expressed in number of hours – typically around 2000 hours. Newer models are achieving 4000+ hours of lamp life. With metal halide, total lamp life is not a very useful measurement, they typically do not burn out, but gradually grow dimmer. The lamp will continue to function long after they’re so dim you won’t want to use them. So manufacturers’ offer a peak rating—and peak lamp life is the time the lamp will last at 80 – 90% of total brightness. The lamp’s success rate is based on a bell curve, so that a majority of (but not all) lamps will meet the lamp life hours specified. Some lamps will fail sooner and this is part of the acceptable operating range of the rating. For projectors that are used under normal operating conditions (no more than three to five hours per day in a clean, relatively dust-free environment) the lamp will have the greates
