A projector is a digital product used to project an image onto a flat surface. Analog projectors work by forcing light through a small image or film, then through a glass or plastic lens which displays and amplifies a larger picture onto a screen or wall. Most modern projectors work with LED lights rather than film, and digitally amplify an image or video.
Projectors are commonly found in movie theaters, group environments like offices and schools, and now often incorporated into home entertainment setups. As technology improves, projectors are also being utilized to place images onto 3D surfaces; a practice known as 3D mapping.
A projector is a device that projects an image or video onto a surface, commonly a projection screen. Typically, projectors create the projection by shinning a light through a transparent lens. Newer projectors are able to project an image directly through the use of lasers.
A short throw projector is a projector is able to display larger images from shorter distances. Short throw projectors can project a 100-inch (254 cm) image at about a distance of 4.5 feet (1.4 m). The advantages they offer are that it is harder for the audience to cast a shadow on the screen and the projector doesn’t lose brightness or crispness.
When choosing a projector consider the following factors: screen size, distance between the projector and the screen (throw distance), and the ambient light in the room in which the projector will be used. There are also various types of projectors available such as pocket projectors, multimedia projectors, short throw projectors, home theater projectors, fixed-installation and large-venue projectors.