Things You Need to Know about Projector Lamps

What are projector lamps? Projector lamps have been used for many years as a means through which images are projected onto a bigger screen. For example, PowerPoint presentations that are projected from the laptop or PC through an LCD projector to a big screen make use of projector lamps. The same goes with the regular overhead projectors that use acetate slides, as well as movie houses, where a movie from a film reel or DVD is played and then projected onto a large video screen. The principle behind projector lamps is the light bulb being surrounded by several mirrors through which the image is both projected and magnified from the source, through the projector, and onto a bigger screen.

Projector lamps were used to be made of old used halogen lights, which had the distinct flaw of giving the image a yellowish glow. Nowadays, projector lamps use lights called metal halide bulbs, which do not generate a yellowish glow and gives an intense white light.

There are three kinds of projector lamps – the overhead projector, slide projectors, and multimedia / digital projectors. These projectors have a wide range of use, as people in both the academe and businesses use projector lamps in presentations for a big group of people. Some also use projector lamps for home theater purposes, where they connect their DVD or Blu-Ray player to a projector, and then magnify the image onto a big screen they have installed in their homes.

The Overhead Projector
An overhead projector is the simplest of the lot, which is basically a bulb surrounded by mirrors and then projected and magnified through more mirrors and lenses. An acetate slide is used with overhead projectors, which is basically like a transparent plastic sheet where the words are printed out. This is the most common and most inexpensive platform for projector lamps, and is usually used in classrooms and other educational facilities.

The Slide Projector
The slide projector is a variation of the overhead projector, where instead of paper-sized acetate sheets, small slides – usually with pictures are projected into a screen. This model is also most commonly seen in classrooms and in the academe.

The Multimedia / Digital Projector
This is the most advanced application for projector lamps around. Most common in businesses and movie and home theaters, the multimedia projector can project images from a computer or video player into a big screen. While the first two model operate on fairly simple principles, the multimedia projector is more complicated, and is able to translate digital images onto a big screen, complete with any animations or colors included in the source material.

Projector lamps can be very useful, especially when used properly. So simply do not forget to clean the filters and keep them stored in cool environments. This will help you use them longer and save you from expensive repairs and replacements. Projector lamps also heat up very fast, so use them in temperatures where they will not overheat and cause damage even to the internal parts of the projector.

Things You Need to Know about Projector Lamps

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