Reflecta Projection Screens manual F L E C T a S C R E E N F a B R I C T E R M I N O L O G Y

SCREEN KNOW-HOW

R E F L E C T A S C R E E N F A B R I C T E R M I N O L O G Y

The fabric types

A projection screen does not only refract the pro- jected light, but also distributes it with a single goal: send as much light as possible into the direction of the audience.

There are two types of projection screens:

■Diffuse

■Reflective

Gain

The reflection properties of a screen are defined by the gain or luminance factor. This factor informs you of the luminance of the respective projection screen in comparison to a surface that is standard white-coated. The factor expresses how many times lighter the picture is seen by the viewer. The larger the gain factor of a screen, the smaller the viewing angle. Typically, the specified gain factor indicates the maximum reflection of a screen along the projection axis. Special coatings of the projection screens are used to obtain diffe- rent reflection characteristics. Their effect is to manipulate the light reflection, i.e. either distri- buted evenly in all directions or concentrated to a small viewing angle.

AlphaLux			GammaLux
Characteristics:			Characteristics:
■ Gain 1.1			■ Gain 1.1
■ Viewing angle 120°			■ Viewing angle 120°
■ Weight/m2 360 g			■ Weight/m2 380 g
■ Screen thickness 0.28 mm			■ Screen thickness 0.30 mm
Used for:			Used for: Ultra-portable table screen
Tripod Alpha, Cinemobil and spring roller			and portable floor screen
		Gain 1,1			Gain 1,1
	2,5			2,5
	2,0			2,0
	1,5			1,5
	1,0			1,0
	0,5			0,5
-50°-40°-30°-20°-10°0° 10° 20° 30° 40° 50°			-50°-40°-30°-20°-10°0° 10° 20° 30° 40° 50°

SilverLux			SuperLux
Characteristics:			Characteristics:
■ Gain 1.1			■ Gain 1.1
■ Viewing angle 120°			■ Viewing angle 120°
■ Weight/m2 360 g			■ Weight/m2 580 g
■ Screen thickness 0.28 mm			■ Screen thickness 0.43 mm
Used for:			Used for: Tripod, self-locking roller Starlight or
Tripod Alpha SilverLux			electric Starlight
		Gain 1,1			Gain 1,1
	2,5			2,5
				2,0
	2,0
				1,5
	1,5
				1,0
	1,0
				0,5
	0,5
-50°-40°-30°-20°-10°0° 10° 20° 30° 40° 50°			-50°-40°-30°-20°-10°0° 10° 20° 30° 40° 50°

TwinLux	UltraLux
Characteristics:	Characteristics:
■ Gain 1.1	■ Gain 1.2
■ Viewing angle 120°	■ Viewing angle 120°
■ Weight/m2 360 g	■ Weight/m2 570 g
■ Screen thickness 0.28 mm	■ Screen thickness 0.43 mm
Used for:	■ Fire protection class M1
Tripod Alpha TwinLux	Used for: Landscape formats, tripod, self-locking
	roller Silverline or electric Silverline

Gain 1,1

2,5

2,0

1,5

1,0

0,5

-50°-40°-30°-20°-10° 0° 10° 20° 30° 40° 50°

Gain 1,2

2,5

2,0

1,5

1,0

0,5

-50°-40°-30°-20°-10° 0° 10° 20° 30° 40° 50°

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