PROJECTORS AND SCREENS
Projection Screens are an obvious need for any show or meeting where video, data, or film is to be projected. But screen choices can be somewhat complex when all of the various formats and variables are considered.
Front vs. Rear
Front Projection means that the projector itself is in the same side of the screen as the viewer. A Front Projection screen is typically white in appearance and is virtually opaque to light sources from the opposite side of the viewer.
Rear Projection means that the projector itself is on the opposite side of the screen from the viewer. This is generally preferable for most meetings since the clutter, cable, and noise of the projector can be completely hidden from view, but it requires significantly more space when compared to front projection. Rear Projection screens are typically gray in appearance and are made to pass light from back (projector) side to the front (viewer) side.
Standard Sizes
Video and Data Projection Screens have generally followed the aspect ratio
of the home television set or the computer screen: 4 units-of-measure wide
by 3 units tall. For convenience, these dimensions are frequently
rounded to the nearest foot, but actual dimensions will almost always conform
to the aspect ration above. Typical standard definition screen sizes
are usually as follows:
4x6 6x8 8x10 9x12 12x16 15x20
High Definition
The new standard in Video and Data Projection is to conform to the aspect
ratio of the High-Definition television: 16 units wide by 9 units tall. Smaller
screen sizes are not generally available since a standard screen can be
used by simply not filling all of the screen area. As above, for
convenience, these dimensions are rounded. Typical high definition
screen sizes are:
7x13 9x16 10x18 11x20 14x24
Manufacturers
Sound Ideas offers a wide variety of screens types and dimensions, including
the following manufacturers:
Da-Lite
Stewart
Draper