Draper's Product Guide for Visual Communication - Draper Group Ltd

Selecting a Projection Screen
Textile Backed Screen Surfaces
A reflective surface laminated to a woven textile base. The screen surface hangs suitably
flat because of the stability of the material and the weight of the bottom dowel. Good for
all types of projection.
Matt White—Diffuses projected light in all directions, so image can be seen
from any angle. Has accurate color rendition and superior clarity. Requires
control of ambient light in the audience area. Washable, flame and mildew resistant.
Glass Beaded—Spherical glass beads embedded in surface provide brighter
on-axis viewing than Matt White, within a narrower viewing cone. Glass Beaded
surfaces have some loss of clarity and perform best with table-mounted projectors.
Flame and mildew resistant. Cannot be cleaned. Seamless in standard sizes through
10´ high.
High Contrast Grey—Grey surface offers excellent resolution while
enhancing blacks, even as whites and lighter colors are maintained. Performs
well in ambient light. Lower gain of 0.8 allows use with even the brightest projectors.
Seamless in sizes up to 8´ in height.
AT1200 and AT Grey—Similar in gain performance to Matt White, with acoustical
properties comparable to the finest speaker grille cloth. Washable, flame and
mildew resistant. Available in sizes through 7˝ x 6˝ or 10´ NTSC diagonal. AT1200
is white; AT Grey is grey for high contrast. Acoustically transparent fabrics are
not recommended for screens smaller than 80˝ wide when used with LCD or DLP
projectors.
Tensioned Screen Surfaces
These screen surfaces are tensioned vinyl with no textile backing. Draper offers
motorized, crank-operated and permanently tensioned screens with built-in tensioning
systems. Advantage—The surface is stretched perfectly flat, resulting in better picture
quality. Highly recommended for video or data-graphics projection.
M1300—The perfect Matt White diffusing surface. For use with any type of
projector in rooms where light can be reasonably controlled. Washable.
M2500—A high-contrast front viewing surface with excellent resolution and high
gain. M2500 tolerates a higher ambient light level than most other front projection
screen surfaces.
HiDef Grey—A grey front projection surface that provides excellent contrast
and black reproduction with a low gain to handle today’s super-bright
projectors. Enhances color contrast, black levels and allows for more
ambient light.
Cineflex—A neutral grey vinyl for rear projection. Cineflex has high resolution
and excellent contrast, even in lighted rooms. For use with any type of projection
equipment. Lower Gain version of Cineflex is also available with peak gain of 0.8.
Matt White & AT1200
Gain 3.0
2.0
1.0
0.5
Glass Beaded
Gain 3.0
Gain 3.0
2.0
1.0
0.5
M1300
Gain 3.0
2.0
1.0
0.5
M2500
Gain 3.0
2.0
1.0
0.5
Gain 3.0
2.0
1.0
0.5
HiDef Grey
2.0
1.0
0.5
Cineflex
Gain Charts
70° 50° 30° 10° 10° 30° 50° 70°
Viewing Angle
50° 30° 10° 10° 30° 50°
Viewing Angle
High Contrast Grey & AT Grey
70° 50° 30° 10° 10° 30° 50° 70°
Viewing Angle
70° 50° 30° 10° 10° 30° 50° 70°
Viewing Angle
50° 30° 10° 10° 30° 50°
Viewing Angle
70° 50° 30° 10° 10° 30° 50° 70°
Viewing Angle
Gain 3.0 Gain 3.0
2.0 2.0
1.0 1.0
0.5 0.5
70° 50°
30° 10°
10°
30° 30° 50° 50° 70°
Viewing Angle
Surface Selection Factors
Gain—a relative measure of a screen’s reflectivity. Charts (shown above) depict gain values (reflectivity) at various points, measured in
degrees from projection axis. These charts help judge uniformity. The flatter the curve in the portion of the viewing cone where viewers
sit, the more consistent the image they will perceive. The quality of the image we perceive is primarily a function of gain, contrast,
uniformity and resolution.
Contrast—the ability to accurately reproduce and differentiate light and dark colors.
Ambient light rejection properties—the ability to perform well under normal to adverse audience lighting conditions.
Resolution—the clarity of the projected image.
Uniformity—the screen’s performance when viewed from points off the projection axis (horizontally or vertically), and when the
brightness of the center of the image is compared to the corners.
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