It uses a tiny cathode ray tube which has high-brightness for image generation. They are:Ī CRT projector is basically a video projecting device. On the basis of its display property, Projectors can be classified in three types. Projectors may be used as an alternative to a television or monitor in large gatherings. This surface is usually light in color and it may be a projection screen, white screen or sometimes a wall. In simple language, a projector basically adopts the operational principal of image projection whereby the projector accepts a video/image input, processes it with the assistance of its inbuilt optical projection system consisting of a lens & optical source and projects the enhanced output on the Projection screen.Ī projector is an optical device that projects a figure or picture onto a surface. If you move object, it’s called an animated image. Put an object or image in front of a light source and an obscure dim image of the object can be seen onto the wall or display screen. All children enjoy Shadow play and though it is simple, yet it figures as the basis for projection technology. Projecting things or images onto a display screen is nothing new. Before understanding the concept and working of a Projector, one should know what projection is.
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