With a video projector we can have a cinema experience at home.
A projector is a machine used for projecting images . Depending on the type of images to be displayed, the device has different characteristics.
cinema projector
The film projector is a piece of equipment made up of mechanical and optical elements that allow a film to be projected on a screen . What this projector does is emit a beam of light that a lens is responsible for increasing and inverting before it reaches the frames of the film. With this process, the resulting images are then focused onto the screen.
It is important to note that this type of projector was devised at the end of the 19th century by the brothers Auguste and Louis Lumière . Currently, digital cinema projectors are also available which, as their name suggests, generate the image digitally, without resorting to film .
video projector
A video projector , on the other hand, is an optical device that, upon receiving a video signal, can project the corresponding images thanks to a lens system. Used in conferences, congresses and classes, video projectors can obtain the input signal from a computer or a TV tuner, for example.
Another use that these projectors receive is at home, to watch movies and other types of audiovisual content as if we were at the cinema . Nowadays, a video projector can be quite affordable even for the tightest of pockets, although there are also latest generation models that are sold at very high prices. As we mentioned in the previous paragraph, they can be connected to a computer, but also to a Blu-ray or DVD player, among other possibilities, to be used for the same purpose that we give to a monitor or a television .
One of the immediate advantages of a projector of this type is the size of the image : for the same price that we would pay for a low-end 32-inch television we can obtain an excellent projector that reaches 300 inches . We should also mention that it takes up less space, can be installed on the ceiling and requires less maintenance than a television, in addition to being less prone to damage, especially if there are small children in the house.
But these devices are not better than televisions in all aspects, and their weakest point is precisely their image quality . Although it provides a unique experience, reminiscent of movie theaters, the contrast level cannot compete with that of a high-end OLED television, for example, and this is not to mention the black and white color reproduction. the darkest grays. Each person opts for the option that most appeals to them, since both have advantages and disadvantages.
Slide projector
A slide projector , meanwhile, houses a mechanism for displaying images that are projected onto a wall or other smooth surface. It should be remembered that a slide is a positive photograph that is taken on a transparent material, such as glass.
Showing photos of a trip through slides is a peculiar experience.
Until the early 90s, it was not uncommon to get together with family and friends to share slides from a trip , for example. Although in essence it was not very different from looking at photo albums, the experience of seeing enlarged images allowed us to appreciate more details and gather larger groups around the memories .
light projector
Lastly, the electric spotlight can be called a light projector . This lamp , characterized by its power, is concentrated in one direction, illuminating a particular area.