There are a number of types of projectors. The most popular types are movie projectors project moving images from a film strip, slide projectors which project still images from a transparency base and video projectors which project a video signal from a computer or home theatre system. With the advances in digital technology, there are so many options to display materials on screens of all sizes. The analogue version did not give as many opportunities to project high quality images and with the introduction of HD, technology is really pushing the boundaries. Older style projection of transparencies with slide projectors is really old hat nowadays and hardly ever used. The emphasis is on accessibility of imagery, whether it is stills or moving films. The ability to download and view movies on mobile communications has really upped the ante.
There is, however, still a place in commerce, business and education for projectors. Whenever you want a group to view the same images and have a group discussion, projectors have their place. Projectors are still used in cinemas and for all kinds of other applications. They are produced by companies with major household names and often sold through franchises. The equipment has a whole range of accessories including cables, connectors, mountings and even their own furniture. Lamps and lenses were traditionally very expensive sometimes costing almost as much as the projector itself. This was very prohibitive for small businesses and individuals. The development of new generation lenses and lamps means that they are now much more reliable and costs have reduced considerably. Very often a spare lamp is included in the price of a new projector. It is always advisable to have a spare in case of emergencies. Projectors can be connected to computers and interactive whiteboards for a truly collaborative experience. The method of collecting information through flip charts which were then typed up for distribution is dated and time consuming. An interactive whiteboard can capture the information immediately and transfer it seamlessly to the computer. Conference room presentations still use video projectors despite other methods such as web cams being available.
If you are considering purchasing a projector, you should shop around. There are many deals to be had if you buy over the internet. You should first decide what the projector is to be used for and then decide which type is best for your use. From this you will be able to look at different models and makes before finally deciding on the best solution for you. With so many options available you may need some advice. Most companies have a customer advice centre you can speak to before making your final decision. Make sure you have all the accessories you need such as extension cables and connectors. You will need to have a suitable place to use the equipment, whether it is a temporary or permanent installation. If you are lucky enough to have a permanent projection room, you may want to mount the projector on the ceiling.