Perlux 140

Harkness Perlux® screens are considered by leading cinema exhibitors worldwide to be the premier gain projection surface

Perlux® 140 is a versatile screen intended for medium-sized auditoria. It offers high contrast, bright pictures, and wide viewing angles. With 40% higher brightness than matt white surfaces, it can significantly reduce projection operating costs. Our proprietary and unique seam welding process ensures our screens have no visible seams under projection conditions. Screens are available in either perforated or non perforated forms depending on speaker placement, and can be shipped either rolled or folded.

Features
Application
  • Cinema – 35mm film, 2D digital, and 3D digital
  • Events
  • Convention halls
Recommended sizes
  • 35mm film projection – width up to 14m / 46ft
  • Digital film projection – width up to 12m / 40ft

General cinema screen sizing reference

General cinema screen sizing reference

Acoustic Performance
Screens are perforated to facilitate the acoustic performance of behind-screen speakers. For most cinema auditoria, standard perf pattern is used. For close viewing (less than 5m/16ft), mini-perf pattern is recommended.

Non-perforated screens are available for use when there are no speakers situated behind the screen.
Viewing and audio performance
Viewing and audio performance for Perlux 140
Technical Specifications
  Perlux® 140 Perlux® 140+
Material PVC with pearlescent coating PVC with pearlescent coating
Colour white white
Perforation standard or mini-perf standard or mini-perf
Weight 0.43 kg/m2 (0.09 lb/ft2) 0.50 kg/m2 (0.10 lb/ft2)
Thickness 0.3mm 0.3mm
Maximum size USA plant: 22.94 x 11.87m (75' 3" x 38' 11") USA plant:  23.77 x 12.19m (78' x 40')
Europe: 33 x 11m (108' 3" x 36' 1")
Packing method folded rolled
Fire classification UK
USA                 NFPA 701
France              M2
Japan
Korea
Australia
Canada
UK
USA                 NFPA 701
France              M2
Japan
Korea
Australia
Germany           B1
Italy                  Class 1
Spain                M1
General Information
Screen shape
Perlux screens should normally be curved. With digital projection a flat frame can be used.

For most auditoria, the recommended curvature is to make the depth of curve (rise on chord) 5% of the screen width (chord). SMPTE recommend to curve all gain screens.


Surface Edging Options
  • Web and eye (grommet). Triple fold web integral with surface
  • Preformed pipe pocket any size on any side
  • Cloth web and fixings (snaps) for press stud frames (UK only)
  • Straight sides or shaped to special order
  • Cut square (unfinished edge)
Despatch/Storage

Screens should normally be transported and stored at temperatures between 5°C and 30°C (40°F and 85°F), with relative humidity less than 80%.
If screens are very cold (e.g. following air transport) then they must be allowed to warm up before unpacking, otherwise cold cracking may occur. Screens should be installed within a maximum of 2 months of shipping. Packages should be handled with care to avoid damage.


Care and Maintenance

The general environment where the screen is installed should be kept reasonably clean to avoid dirt and dust build-up. Screens can be periodically cleaned using a soft brush or cloth, doing this vertically with limited pressure. Screens can be cleaned using a damp cloth wetted with water and a mild detergent. Under no circumstances should screens be cleaned with abrasive materials or harsh chemicals such as acids, bleaches or solvents. Harkness Screens is not liable for damage caused to screens through the use of inappropriate cleaning methods or chemicals.


For information on Installation, please see the Resources section of our website.