User Manual

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GLOSSARY
LUX
Lux is the perceived amount of light that is reflected by the projection screen.
Lace and Grommet
A projection screen that has a border with grommets. Grommets are reinforced holes which allow the screen surface
to be attached to a frame.
Overall Dimensions
The overall dimensions of a projection screen are the dimensions of the projection surface including the borders.
Passive 3D
Passive 3D uses polarising filters and a projection surface with polarisation retention to separate the two different
signals. Passive 3D is often realised using two projectors, one for each eye’s information.
Pincushion Distortion
Image magnification increases with distance from the optical axis. This creates an image where lines do not go through
the centre of an image but are bowed inwards towards the centre of the image.
Polarisation
Polarisation is a property of certain types of waves that describes the orientation of their oscillations. These differences
in orientation are used to project different signals.
Polarisation Retention
Polarisation retention is the ability of the screen to maintain a certain polarity of incident light upon projection.
This is the ability of the projection surface to retain the orientation of the signal and preserve the polarisation.
Potential Free Contacts
Potential free contacts refer to a contact of a relay which does not make or break a current. Usually some other relay
or device has the job of starting or stopping the current.
RAL
RAL is a colour matching system used in Europe.
RF: Radio Frequency
Wireless control via Radio Frequency is used to operate the projection screen. The receiver can be placed out of sight
of the remote control. The range of RF is 20 metres through walls.
RS232
Recommended Standard 232 is a standard for serial binary data and control signals commonly used in computer
serial ports.
Stereoscopic 3D
The technique of creating depth in an image by using a separate image for each eye. ‘Stereo’ means two and
‘scopic’ means view, so Stereoscopic 3D uses two points of view with left and right eye distinction.
Tab-Tensioned
Parabolic curves on both the left and right side enable a vinyl front or rear projection screen surface to be perfectly
flat and retractable. The parabolic curves are calculated in relationship to the size of the screen. Tab-tensioning allows
for the flattest possible projection screen surface in a retractable screen.
Uniformity
An even distribution of light on a projection screen. Uniformity is essential for an even image with a wide viewing angle
in the desired direction.
Viewing Angle
The viewing angle of a projection screen fabric indicates the maximum angle at which the projected image is still
clearly visible.
Viewing Area
The viewing area of a projection screen is the available area for projection within the borders.