A video projector is an image projector that receives a video signal and projects the corresponding image on a projection screen using a lens system. All video projectors use a very bright light to project the image, and most modern ones can correct any curves, blurriness, and other inconsistencies through manual settings.
Video projectors are used for many applications such as conference room presentations, classroom training, home cinema and concerts. In schools and other educational they are sometimes connected to an interactive white-board. In the late 20th century they became commonplace in home cinema. Although large LCD television screens became quite popular, video projectors are still common among many home theater enthusiasts.
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