Once Tolstoy was asked: “Why is your novel called “Hyperboloid of engineer Garin ” when in the basis of device lies a parabolic mirror?” And he answered: “Because it is more terrible!” Modern projectors are like fantastic weapon – they have powerful sources of light, mirrors, optical systems, but they used extremely at peaceful aims.
Modern projector is a autonomous device which provide transmission (projection) of information on the screen. This information comes from external source point – computer, video recorder, DVD player, video camera, TV tuner and so on.
The main difference between modern projectors and the old ones is that they don’t need material image carrier, from which this image is projected to the screen – no matter what is it (slide, picture , illustration on the piece of paper, etc). They receive picture from the external source point in the kind of electrical signal. So they become very important elements of multimedia.
When you buy home projector you should know at which aims would you use it: to watch video, play computer games, etc. And then to search for model with according technical features. In the second case you define the sum of money you are ready to spend and then the best model is chosen in the range. The first approach is more expensive but at the same time the results are more impressive. Choosing woofer speaker systems is a very important moment in the whole process of bargaining.
In any case to make the right choice you should know main technical features of modern projectors and understand which of them are the most important and essential and which one you can neglect.
Every day the level popularity of projectors for home theatres is growing. They are more convenient than bulky TV sets and allow to vary with any size of the screen easily. Besides the majority of them besides the source of video signal can work with computers. Which makes them truly universal display facilities.
