Reflecta Projection Screens User Manual

XX

The right projection
screen for your
specific purpose

Projection
Screens

PROJECTION SCREENS BY REFLECTA

THE ENTIRE UNIVERSE OF PROJECTION SCREENS

2

3

reflecta .........................................................4

Basics ...........................................................6

Projection screen know-how ..................7

reflecta screen fabric terminology........8

Portable projection screens

Tripods ..........Alpha..................................10

.....................Silverline large format.........11

.....................Starlight..............................12

Cinemobil.................................................13

Portables.......Table screen .......................14

.....................Floor screen........................15

Landscape format.....................................16

Alum. frame...Multi system.......................18

.....................Mono system......................20

Fixed projection screens

Spring roller.............................................22

Galaxy, self-locking roller system ..............23

Silverline .......self-locking roller/electric....24

Starlight ........self-locking roller/electric ....26

Cosmos.........Electric ...............................28

.....................Electric RC .......................... 30

Cinehome.................................................32

Plain......................................................... 33

Customised models ..................................34

Contents

PROJECTION SCREENS BY REFLECTA

THE ENTIRE UNIVERSE OF PROJECTION SCREENS

reflecta

Quality and innovation in photography - this
has been the hallmark of reflecta for more than
35 years. The history of our company started
with the production of projection lamps and
photo accessories in 1967 – today, we offer
customised solutions for presenting and pro­cessing photos for almost any purpose.

To make the best out of your photos, we make
the highest demands in quality to ourselves.
Time and again, our innovative products have
shown that the good can still be made better.
We are committed to our tradition. Therefore,
we do not twiddle our thumbs, not even in the
age of digital photography and image processing.
At reflecta, you will find novelties for all aspects
of photography. Quality and innovation – to make
only the best of your photos.

Chronology

1967 reflecta foto-film-projektion was

established in Nuremberg. Product range:
projection lamps and photo accessories.

1970 Company moved to Schwabach near

Nuremberg.
Production of film and photo lights was
started, distribution of flashguns,
projection lamps, flash lamps and cubes.

1974 Production of reflecta projection screens

was started.

1977 reflecta superstar screen for daylight

projection was introduced.
At the time, it was the brightest screen due
to a completely new procedure of surface
coating.

1980 Another projection screen, the reflecta

pearly screen, with a specially finished
surface for highest colour luminance and
authentic colours was introduced.

1982 The reflecta system 4000 for tripod

projections screens was introduced.

1999 Projection screen product range was

expanded to home theatre applications.

2006 Projection screen product range was

expanded significantly.

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REFLECTA – REPRESENTED WORLDWIDE

reflecta
worldwide

Europe

Belgium
Cyprus
Denmark
Great Britain
Finland
France
Greece
Netherlands
Ireland
Island
Italy
Luxembourg
Austria
Poland
Portugal
Romania
Sweden
Switzerland
Slovenia
Slovakia
Spain
Czech Republic
Hungary

North America

Canada
U.S.A.

South America

Argentina
Venezuela

Middle East

Iran
Israel
Yemen
Kuwait
Oman
Palestine
Saudi Arabia
Syria

Asia

Bangladesh
Hong Kong
India
Indonesia
Japan
Korea
Malaysia
New Zealand
Pakistan
Russia
Singapore
Sri Lanka
Taiwan
Thailand
Vietnam

Africa

Morocco
South Africa
Tunisia

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Purchasing references at [e-mail]

BASICS

SCREEN KNOW-HOW

Basics about the fabrics

If you want to present pictures or information to
an audience, be it in the private or business
sector, a perfect presentation is indispensable.

However, this can be achieved only if projec­tion device and screen match each other. A slide
projector, e.g., needs a different screen than a
beamer. Before purchasing a screen, you should
therefore think carefully about the intended pur­pose.

In the private sector, different factors are
decisive than when used in the business world.
When used at home, the pure pleasure of wat­ching the presentation is in the foreground; when
the screen is not required, it should be hidden
unobtrusively. In the business area, a stable
design to withstand daily use and versatile appli­cations is required.

Basics about brightness

In order to view a projected picture, the picture
must have a certain brightness. This brightness,
of course, depends on the light in the room, and
the picture must be brighter than the surroun­ding light. It is also clear that in bright rooms,
the pictures must be proportionately brighter
than in dark rooms.

A decisive parameter of all projectors is their
light intensity. For multimedia projectors, this
intensity is measured in lumen, where the stan­dard of the American National Standard Institute
(ANSI) is applied frequently.

The larger the projection surface, the lower
the amount of light per surface unit since projec­tors – irrespective of the size of a picture –
always produce the same amount of light.

part from light intensity, the contrast value is
an essential factor which influences the quality of
the projected image. The contrast value indicates
the ability of a projector to reflect a scale of sha­des as wide as possible in their colour intensity
from the darkest to the brightest shade as in real

life. A high contrast will produce a natural, vivid
image.

Hence, luminous efficacy and contrast value
must match the brightness of the ambient light
and the characteristics of the projection screen
to produce a perfect image.

The ratio between the brightness of the pro­jector and that of the projected image should be
5:1 as a minimum to achieve the best image qua­lity.

6

A. Trapezoid distortion

Front projections typically produce a trapezoid
distortion (keystoning). The projected picture is
larger at the top of the screen than at the bottom.
This distortion is caused by an inclined projec­tion onto a straight hanging screen. Special key­stone eliminators allow for an inclined positio­ning of the screen to provide for an appropriate
means to avoid the trapezoid distortion when
using OHP. With the modern data and video pro­jectors, the trapezoid effect can also be avoided
or reduced with the keystone eliminators.

B. Gain factor

The gain factor describes the luminance of a
fabric or a projection screen. The higher the gain,
the stronger the reflection of the screen fabric.
With an increasing gain factor, the viewing angle
of the screen decreases.

C. Angle of view

The angle of view describes the angle in degree
where the picture on the screen is still adequate­ly visible. It is measured with reference to the
normal of the screen center. The double angle of
view (= viewing angle) thus describes the area
within which an audience should be seated.

D. Selecting the right screen

Selecting the right screen depends on four
variables:

1. Type of screen

■ Rear or front projection (the latter is the most

common method).

■ Mounted firmly or portable.

■ Operated electrically or manually.

2. Screen size

■ Depends on projection room and seating

arrangement.

■ IIdeally, the following criteria are considered:

•

The screen width (X) should amount to at
least half the distance between screen and
first row of seating (D1) (example: With a
distance of 4 metres between the first row
and screen, the minimum screen width is
2 metres).

•

The distance between screen and last row of
seating (Y) should not be larger than 6 times
the screen width (X) (example: With a screen
width of 2 metres, the last row should be at
12 metres as a maximum).

•

The distance between floor and bottom edge
of screen (A) is 90 cm, preferably 125 cm
for row seating.

3. Screen format

It is determined by the projection method. The
format (also referred to as aspect ratio) is
defined by the ratio of height to width of the
screen. Depending on the projection type, the
following formats are distinguished:

•

1:1 for overhead projection (also referred
to as square)

•

4:3 for video projection (also referred to
as NTSC or video)

•

3:2 for slide projection

•

16:9 for widescreen projection

4. Type of fabric

The type of fabric is determined by the following
factors:

■ The projection method (front projection

or rear projection).

■ The projector. Each projector has a specific

luminous efficacy (measured in ANSI lumen).
If several projection devices are used (e.g.
beamer and OHP), it is recommended to
match the luminance (gain factor) of the
fabric to the lowest ANSI lumen value.

■ The size of the projection room. The size and

the layout determine the seating of the
audience. The wider the seats are apart, the
larger the recommended viewing angle of the
screen.

■ The ambient light.

The lighting conditions of the projection envi­ronment affect the presentation quality. When the
lighting can be controlled, e.g. by darkening or a
high luminance of the projector, the "SuperLux"
fabric can be used.

The rule of thumb is: keep the ambient light
away from the screen; the brighter the ambient
light, the higher the luminance of the projector
and/or reflection of the fabric should be.

Rear projection is substantially more insensi­tive to ambient light!

E. Care of screens

Frequent use of a screen requires an appropriate
care. All screens can be cleaned with a carefully
applied weak soapsuds. When not in use, the
screens should be retracted to their casing to
protect them against depositing dust.

Avoid to touch the screen fabric with bare
hands since, in the course of time, dust will stick
better to the (greasy) imprints than on clean
spots.

HOW TO CHOOSE THE SUITABLE SCREEN

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AlphaLux

Characteristics:

■ Gain 1.1

■ Viewing angle 120°

■ Weight/m

2

360 g

■ Screen thickness 0.28 mm

Used for:
Tripod Alpha, Cinemobil and spring roller

SilverLux

Characteristics:

■ Gain 1.1

■ Viewing angle 120°

■ Weight/m

2

360 g

■ Screen thickness 0.28 mm

Used for:
Tripod Alpha SilverLux

TwinLux

Characteristics:

■ Gain 1.1

■ Viewing angle 120°

■ Weight/m

2

360 g

■ Screen thickness 0.28 mm

Used for:
Tripod Alpha TwinLux

GammaLux

Characteristics:

■ Gain 1.1

■ Viewing angle 120°

■ Weight/m

2

380 g

■ Screen thickness 0.30 mm

Used for: Ultra-portable table screen
and portable floor screen

SuperLux

Characteristics:

■ Gain 1.1

■ Viewing angle 120°

■ Weight/m

2

580 g

■ Screen thickness 0.43 mm

Used for: Tripod, self-locking roller Starlight or
electric Starlight

UltraLux

Characteristics:

■ Gain 1.2

■ Viewing angle 120°

■ Weight/m

2

570 g

■ Screen thickness 0.43 mm

■ Fire protection class M1

Used for: Landscape formats, tripod, self-locking
roller Silverline or electric Silverline

REFLECTA SCREEN FABRIC TERMINOLOGY

SCREEN KNOW-HOW

The fabric types

A projection screen does not only refract the pro­jected 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 diffe­rent reflection characteristics. Their effect is to
manipulate the light reflection, i.e. either distri­buted evenly in all directions or concentrated to a
small viewing angle.

0,5

1,0

1,5

2,0

2,5

10°0° 20° 30° 40° 50°

Gain 1,1

-10°-20°-30°-40°-50°

0,5

1,0

1,5

2,0

2,5

10°0° 20° 30° 40° 50°

Gain 1,1

-10°-20°-30°-40°-50°

0,5

1,0

1,5

2,0

2,5

10°0° 20° 30° 40° 50°

Gain 1,1

-10°-20°-30°-40°-50°

0,5

1,0

1,5

2,0

2,5

10°0° 20° 30° 40° 50°

Gain 1,1

-10°-20°-30°-40°-50°

0,5

1,0

1,5

2,0

2,5

10°0° 20° 30° 40° 50°

Gain 1,1

-10°-20°-30°-40°-50°

0,5

1,0

1,5

2,0

2,5

10°0° 20° 30° 40° 50°

Gain 1,2

-10°-20°-30°-40°-50°

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ValueLux

Characteristics:

■ Gain 1.1

■ Viewing angle 120°

■ Weight/m

2

1100 g

■ Screen thickness 0.65 mm

Used for:
Cosmos series

ValueStarlux

Characteristics:

■ Gain 2.1

■ Viewing angle 80°

■ Weight/m

2

1100 g

■ Screen thickness 0.65 mm

Used for:
Cosmos series

DeltaLux

Characteristics:

■ Gain 1.0

■ Viewing angle 100°

■ Weight/m

2

440 g

■ Screen thickness 0.34 mm

Used for:
Galaxy series self-locking roller

UltraLux for mobile front projection

Characteristics:

■ Gain 1.0

■ Viewing angle 100°

■ Weight/m

2

310 g

■ Screen thickness 0.20 mm

Used for:
Framed screen Multi and Mono

UltraLux for mobile rear projection

Characteristics:

■ Gain 1.6

■ Viewing angle 100°

■ Weight/m

2

370 g

■ Screen thickness 0.28 mm

Used for: Framed screen
Multi and Mono

RearPro

Characteristics:

■ Gain 1.6

■ Viewing angle 120°

■ Weight/m

2

420 g

■ Screen thickness 0.32 mm

■ Fire protection class M1

Used for:
self-locking Silverline rear projection

REFLECTA SCREEN FABRIC TERMINOLOGY

0,5

1,0

1,5

2,0

2,5

10°0° 20° 30° 40° 50°

Gain 1,1

-10°-20°-30°-40°-50°

0,5

1,0

1,5

2,0

2,5

10°0° 20° 30° 40° 50°

Gain 1,0

-10°-20°-30°-40°-50°

0,5

1,0

1,5

2,0

2,5

10°0° 20° 30° 40° 50°

Gain 2,1

-10°-20°-30°-40°-50°

0,5

1,0

1,5

2,0

2,5

10°0° 20° 30° 40° 50°

-10°-20°-30°-40°-50°

Gain 1,6

0,5

1,0

1,5

2,0

2,5

10°0° 20° 30° 40° 50°

Gain 1,0

-10°-20°-30°-40°-50°

0,5

1,0

1,5

2,0

2,5

10°0° 20° 30° 40° 50°

-10°-20°-30°-40°-50°

Gain 1,6

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PORTABLE PROJECTION SCREENS

Tripod Alpha

Well-priced projection screen designed for the
fast mobile use.

Product details:

• Black metal tube in appealing design,

6 cm diameter.

• Tripod with anti-skid plastic caps on legs for

a safe stand.

• Ergonomically designed carrying handle

with lock.

• Perfectly plain position of the screen due

to a tensioning mechanism at the tube.

• Continuously adjustable height of horizontal

tube and telescopic tube.

• Projection screen can be rotated vertically

by 360°.

• Projection screen in AlphaLux, SilverLux or

TwinLux matte white, 1.1 gain and wide
viewing angle.

• Optional carrying bags for all sizes

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Tripod projection screens Alpha – Technical data (all dimensions in cm)

Ref. no Type Fabric Format A B E F G H Weight

40511 Tripod 125x125 AlphaLux 1:1 125 125 140 6 6 170-205 3 kg
40521 Tripod 155x155 AlphaLux 1:1 155 155 170 6 6 195-245 6 kg
40531 Tripod 180x180 AlphaLux 1:1 180 180 195 6 6 230-280 7 kg
40572 Tripod 125x125 Silverlux 1:1 125 125 140 6 6 170-205 5 kg
40582 Tripod 155x155 Silverlux 1:1 155 155 170 6 6 195-245 6 kg
40924 Tripod 125x125 Twinlux 1:1 125 125 140 6 6 170-205 5 kg
40934 Tripod 155x155 Twinlux 1:1 155 155 170 6 6 195-245 6 kg

Handle Carrying bag for Tripod screensTensioning knob

B

F

E
A

G

H

TRIPODS

■ CINEMOBIL ■ ULTRA-PORTABLES ■ PORTABLES ■ LANDSCAPE FORMAT ■ ALUMINUM FRAME

B

F

E
A

G

H

PORTABLE PROJECTION SCREENS

Tripod Silverline in large format

High-quality projection screen for professional
use. The screen was designed to meet very high
demands regarding stableness, stability and
safety. Special emphasis was given to secure and
comfortable operation as well as easy handling.

Product details:

• Anodized aluminum tube in elegant design,

7 cm x 7 cm.

• High-quality tripod with anti-skid plastic caps

on legs for a safe stand.

• Ergonomically designed handle with lock in

sturdy plastic.

• Perfectly plain position of the screen due

to automatic tensioning.

• Continuously adjustable height of horizontal

tube and telescopic tube.

• Projection screen can be rotated vertically

by 360° degrees.

• Large extendable overhead keystone eliminator

in the tripod head to incline the screen for a
correct display of vertical lines.

• Screen lock for easy and safe transportation.

• Ergonomically designed operating elements.

• High-quality UltraLux fabric with 1.2 gain.

• Optional carrying bags for sizes 180cm

and 200cm

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Tripod projection screens Large format – Technical data (all dimensions in cm)

Ref. no. Type Fabric Format A B E F G H Weight

84031 Tripod LF Pro 180x180 UltraLux 1:1 180 180 196 7.5 7.5 260 10 kg
84051 Tripod LF Pro 200x200 UltraLux 1:1 200 200 216 7.5 7.5 280 12 kg
84071 Tripod LF Pro 240x180 UltraLux 4:3 240 180 256 7.5 7.5 260 14 kg

HandleLock knob with fixing button

and unlock lever

Stable tripodKeystone eliminator

TRIPODS

■ CINEMOBIL ■ ULTRA-PORTABLES ■ PORTABLES ■ LANDSCAPE FORMAT ■ ALUMINUM FRAME