Draper Luma 207121 ユーザーズマニュアル

Textile Backed Screen Surfaces

The standard to which all other screen sur faces 

are compared . A matt white surface diffuses projected light in all 

directions, so the image can be seen from any angle . Matt white offers 
accurate color rendition, as well as superior clarity because it is a smooth 
surface, not embossed . Recommended for use with overhead projectors 
and high light output projection devices . Requires adequate provision 
for the control of ambient light in the audience area . Gain of 1 .0 with a 
panoramic 180° viewing cone . Seamless in virtually all standard sizes .

Grey textile-backed surface offers 

excellent resolution while enhancing the blacks of LCD/DLP 

projected images . Performs well in ambient light condition . High 
Contrast Grey’s lower gain of 0 .8 allows use with even the brightest 
projectors; viewing cone of 180° . Available on most non-tensioned 
motorized and manual screens, seamless in sizes up to 8' high .

Spherical glass beads embedded in surface provide 

brighter on-axis viewing than matt white, within a narrower viewing 
cone . All 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 up to 10' in height .

The most innovative and versatile acoustically 

transparent screen material available . Available on several 
models of permanently tensioned and motorized screens . Gain 
of 1 .0, similar to matt white . Available in sizes through 72" x 96" 
or 10' diagonal . The acoustical properties are comparable to the 
highest quality speaker grille cloth . Not recommended for screens 
smaller than 80" wide when used with LCD or DLP projectors .

AT Grey offers the acoustical properties of our popular AT1200, 

while providing the best optical qualities of both matt white and High 
Contrast Grey . It is unique in that it offers both a 180° viewing cone and the 
vivid color contrast associated with high contrast grey materials . Available 
in sizes through 72" x 96" or 10' diagonal . Gain of 0 .8 . Not recommended 
for screens smaller than 80" wide when used with LCD or DLP projectors .

Unsupported Vinyl Materials

Pliable matt white material for use in our 

portable folding screens . It can be stretched, folded and re stretched 
repeatedly without damage . Flexible matt white is an excell ent 
matt white material with a gain of 1 .0 and a viewing cone of 180° .

The perfect matt white diffusing surface . Ideal 

for high resolution data projection . Extremely broad light 

dispersion and spectral uniformity . Panoramic viewing angle 
and true color rendition . Recommended for use with any type 
of projector where the light level can be reason ably controlled . 
Washable . M1300 has a gain of 1 .0 and a viewing cone of 180° .

A high contrast surface with excellent resolution for 

projectors producing up to 1000 ANSI lumens . Provides good black 
retention with accurate light colors and whites . M2500 tolerates a higher 
ambient light level in the audience area than many front projection 
screen surfaces . On axis gain of 1 .5; viewing cone of up to 180° .

Grey front projection surface that provides 

excellent contrast and black reproduction . HiDef Grey is 

designed with a low gain of 0 .9 to meet the demands of today’s 
super bright projectors . The grey color enhances color contrast 
and black levels in the projected image and also allows for more 
ambient light in the audience area than traditional surfaces .

Neutral grey rear projection diffusing surface . Provides high 

resolution and excellent contrast, even in lighted rooms . Useful with a 
wide range of projection systems . Gain 2 .3 on axis; moderate viewing cone .

Draper offers two different types of projection screen surfaces—
textile backed and unsupported vinyl .
Supported—The reflecting surface of the front projection screen 
is laminated to a woven textile base which provides the necessary 
dimensional stability (stiffness) so the screen fabric will operate 
satisfactorily on a roller . Materials of this type are used on spring-
roller operated and motorized projection screens . The screen hangs 
suitably flat by virtue of the dimensional stability of the material and the 
weight of the dowel in the bottom of the screen .
Unsupported Vinyl—This type of screen surface consists of the vinyl 
reflective surface only, with no textile backing . Transmissive rear 
projection surfaces are also available . These screen surfaces, whether 
for front or rear projection, need to be tensioned to achieve sufficient 
flatness to perform properly . Draper offers three types of screens with 
unsupported vinyl surfaces, all of which may be specified with front 
or rear projection surfaces—

 • Tab-tensioned—motorized or crank roller-operated screens 
with built-in surface tensioning systems . 
 • Permanently tensioned—screens which are permanently 
stretched on a frame, and usually wall mounted . 
 • Portable—folding screens .

Advantage of Tensioned Screens—The surface is stretched perfectly 
flat, resulting in better picture quality . Surface flatness is desirable 
with any type of projection and highly recommended for data-
graphics projection . Because of their requirement for tensioning, 
screens made of unsupported vinyl cost more than conventional 
textile-backed screens . Usage of unsupported vinyl screens has 
grown in recent years . Buyers are increasingly willing to pay for the 
superior image quality which screens of this type provide .
Surface Cleaning—Developing a cleaning schedule is 
recommended . See www.draperinc.com/go/ScreenSurfaces.htm for 
care and maintenance .

Draper Projection Screen Surfaces

What is Gain?—

Gain is a measure of brightness as compared to a block of magnesium carbonate, which serves as the 

industry’s standard for gain of 1 .0 . A more familiar “real-world” comparison is with a matt white projection screen . Most matt white 
screens have a fairly uniform light distribution pattern with gain of approximately 1 .0 . Screens that appear brighter on axis are 
concentrating reflected light in a narrower area: the gain may be 2 .5 on axis but 0 .5 at 60° to the side . With today’s brighter, high output 
projectors, gain is not as important as it once was because the screen no longer has to make up for a lack of projector brightness . Other 
factors—such as color contrast and accuracy, uniformity, reproduction of black and the ability to perform with more ambient light in 
the audience area—are equally important .