One of the most important ones is ventilation for the bulb. There are steps you can take to help your projector lamp last as long as possible, such as using economy mode and avoiding turning the projector off and on rapidly. If it’s operated under normal conditions the lamp can be expected to last its entire rated life or longer. However most projector bulbs are rated around 2000 hours. Most projectors today are either digital or computer based and are used mainly in theater settings.Īs with any light bulb, the expected life of a projector bulb varies based on the technology and the projector itself. They can also be seen being used recreationally on camping trips or outdoors where TVs would be inconvenient. The color is filtered and then beamed onto the screen.Īlthough they are considered to be an older technology, projectors still have many uses today! They are often used in classrooms, conference rooms, and churches during presentations. DLP projectors have a spinning color wheel that the light beams through onto a chip that has several mirrors. A signal is then sent through the small LCD panels and the lens of the bulb to project the image onto the screen. LCD panels break down the light into various individual colors by using a prism. The vapor is then lit from the current and produces an extremely bright light which is shone onto an LCD (liquid-crystal display) or DLP (digital light processing) panel which then produces the images. The way it works is by pressurized mercury vapor filling the arc gap inside the bulb and the lamp sending an electrical current through the gap. The light source is usually called the lamp, but is technically the bulb.Ī projector bulb is described in technical terms as an ultra-high pressure arc lamp. It is a common question if projector lamps and projector bulbs are different, but they are actually the same. Though films and photographs are no longer shot this way, projector bulbs are still available to preserve the photos and videos that were. Although they have since been replaced with digital cameras and high-tech recording devices, we once used video and photo projectors to display our most treasured memories.
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