Saturday, May 2, 2009

Rear Projection Displays / Display Grids



Rear projection is mostly used in situations with short projection distances. Under such circumstances different parts of an image are produced by individual displays arranged in a grid to show the larger image.Lens specifications are usually indicated by the ratio of projection distance to screen width. Multiple projectors are often advantageous because in order to achieve the same level of brightness as that of multiple projectors, single projectors need wide-angle lenses and a powerful light source. As screen size is increased the “hotspot effect” becomes more apparent.Thus, most people prefer to use display grids when large screens are required. Each projector is installed on a special rack behind the screen while the control, the signal source, signal receptor and format conversion equipment are installed behind the screen on the two horizontal sides or below the projector rack. This enables maintenance of the equipment without disturbing the projector.

1 comment:

  1. Awesome information provided by you about the rear projection displays and display grids. Thanks for the sharing with us.

    ReplyDelete