Projection ScreensScreen types are available for front or rear projection, fixed installation or portable, manual or electric operation, and commercial or residential applications. 7/30/2012 5:44 AM Eastern
Jul 30, 2012 9:44 AM, By Mark Johnson
The days of the 4:3-aspect-ratio glass-beaded projection screen on a wobbly tripod are fast going the way of the rotary dial telephone or the audiocassette. Technology advancements abound for projection surfaces, starting with the aspect ratio. While there are still plenty of 4:3 images being projected around the world, there are also high-definition widescreen 16:9 and 16:10 pictures, and as a result of projection mapping technology, warping and edge-blending technologies and images of any size or shape are fair game now.
The advancements in screen technologies can create a double-edged sword. The potential to get big, sharp, bright images under practically any viewing circumstance has increased, so have the options from which to choose. While some manufacturers specialize on a particular type of screen technology, many offer a wide range of screen types, making doing the research on what option is the best solution for a specific situation even more important. It’s advisable to check the manufacturers websites for additional information on their specific product offerings. Many of the manufacturers websites also provide in-depth info on screen technologies and applications as well as calculators to help you choose the right product for your application.
As noted, most of the manufacturers provide different types of screen compositions combined with multiple options of mounting or stand systems, so you are almost guaranteed to get whatever your needs dictate. Projection surface options include white matte and gray surfaces and optical, lenticular, flat, and curved. White matte is still the most popular with about 80 percent of the screens sold incorporating that surface. Screen types are available for front or rear projection, fixed installation or portable, manual or electric operation, and commercial or residential applications. Many of the choices for the type of screen you need will be prescribed by the application.
Specifications such as screen gain, contrast, and viewing angle are important considerations when selecting a screen. High gain? Low gain? What does it all mean? Given all the scenarios in which projection systems can (and will) be applied, at first glance you might think that it would be best to just go for as much gain as possible and you’ll be good to go. Like most other aspects of system design, there are often other things at play that will help to drive the decision, and projection systems are certainly no exception. For instance, a low gain screen may offer better contrast or a wider viewing angle, which may be required if the facility you are outfitting is particularly wide.
Basically, screen gain is measured at the front and center of the screen, and the resulting number represents a ratio of light reflected from the screen in comparison to light reflected from a standard white magnesium oxide board. The half-gain viewing angle is where the gain measurement is at 50 percent of the peak value. This angle represents an image that is half as bright as the image front and center. This specification is also important when determining the coverage area of the screen. This technology showcase provides a cross section of some of the types of projection screens available. The FullWhite borderless projection screen from AV Stumpfl is designed for fixed or portable applications. The projection surface is attached to the frame with either a hook-and-loop tape system or hooks. The plug-in frame system provides the ability to construct a frame of practically any aspect ratio. Multiple mounting options allow for wall, ceiling, or stand mounting.
Jul 30, 2012 9:44 AM, By Mark Johnson
Custom Display Solutions’ VistaPower 3.0 (VP3) is a high-resolution, super-high-contrast rear projection screen. The cast Fresnel/Diffusion surface is designed for single-lens projection systems and provides a 160-degree viewing cone. The screen is available in a matte or gloss finish and provides an on-axis gain of 3.0 (±0.5). Constructed of PMMA Poly (methyl methacrylate)—a transparent thermoplastic material—available image sizes range from 50in. to 180in. diagonal (NTSC) as well as custom sizes.
The Interactive Dry Erase Application (IDEA) screen from Da-Lite is a dual-purpose projection screen and writable marker board combination. Designed to be wall-mounted and used primarily with interactive short-throw projectors, the proprietary projection surface is available in sizes between 36in. and 46in. tall, offers a gain of 2.5 and a 25-degree viewing half angle, and has an extruded aluminum frame with a black anodized or clear anodized finish. Surface formats include 16:9, 16:10, and marker board. The screen includes a tray at the base of the assembly for storage of dry-erase markers, erasers, and interactive tools that can be used with a projector.
Upgrades to three of dnp’s Supernova models include cosmetic changes, improvements to help to facilitate installation IR remote control, and improved tensioning adjustment. The Supernova Core II wall-mount front-projection screen is available is sizes up to 120in. in 16:9 format and 110in. in 16:10 format. The peak gain is 0.8 with a horizontal half gain of 85 degrees.
Draper’s modular StageScreen is designed to be flown, wallmounted, or ground supported via the optional legs. The frame comes in either a black or silver anodized finish, and the frame sections are assembled by way of integral threaded links and guide pins. Available sizes and formats include NTSC from 6’x8’ to 30’x40’, HDTV from 4’6”x8’ to 22’6”x40’, 16:10 from 5’x8’ to25’x40’, and Multi-Format from 12’x40’ to 18’x60’ with custom sizes also available. Six different screen surface options attach to the frame using a self-centering DuraLoop bungee cord system.
The Elite Screens Aerie Tension 2 integrated in-ceiling screen features a dual-point insertion design for installation from the airspace above or from the room below. The projection surface is a CineWhite 1.1 gain matte white material. The system comes with a full IR, RF 12V trigger and an Ethernet control package. The screen is available in sizes ranging from 84in. to 139in. with options in 4:3, 16:9, or 16:10 aspect ratios. Custom sizes, aspect ratios, and screen material are available by special request.
The portable ES3000 from Epson is designed to expand via a screen size selector switch to provide three popular image sizes: standard 4:3, widescreen 16:9, or widescreen 16:10. The screen features a white projection surface and a one-piece design. A wheeled case is included.
Jul 30, 2012 9:44 AM, By Mark Johnson
Hamilton Buhl’s FF-150-Z fixed-frame screen provides a 74”x131” viewable surface (150in. diagonal) in a 16:9 HDTV format and is designed for applications in a home theater, business environment, or classroom. The screen features an anodized aluminum frame with black trim. The matte white screen fabric installs on the frame via tabs that automatically provide optimum tension.
Any smooth paintable surface can be a projection screen with Screen Goo, a specially formatted line of acrylic paint products. Screen Goo comes in formulations for front or rear and 2D or 3D projection applications, and includes Reference White, High Contrast, Max Contrast, Ultra Silver 3D, Rear Projection, as well as Ultra Black Border. Complete kits are available that include necessary compounds for a projection surface up to 130in. diagonal, as well as rollers and a paint tray.
Paint On Screen can be rolled or sprayed (recommended) and is available in a variety of shades from Pure MICA White (Level 1 shade, 1.1 gain) to S1 Ultimate Contrast (Level 7 shade, 2.0 gain), and gains (.95 to 4.0). exterior and 3DHD formulations are also available. Viewing angles range from 110 to 160 degrees. One gallon will cover approximately 170 square feet.
The Pro Display Soundvision Optical front projection screen with sound provides 360-degree audio coverage (the screen surface is a loudspeaker) and a 180-degree viewing angle. Two different gains are available, either 10 or 20 (by special order). Standard sizes include: 4:3 aspect ratio (40in. to 200in. diagonal) or 16:9 aspect ratio (80in. to 12in. diagonal). Accessories include wall brackets, stands, a ceiling mount, and amplifiers.
The Magnifica electric screen from Recordex features an IR remote control. The Ultra3 matte white surface offers up to 1.1 gain and a 160-degree viewing angle. Available projection formats include 1:1, 4:3, and 16:9. The Magnifica can be ceiling- or wall-mounted and includes a 17.5in. power cord with a surface-mounted three-position wall switch/IR receiver.
Screen Innovations’ Black Diamond Zero Edge Double Vision allows images to be projected on either side of the screen. The maximum seamless size is 142in. diagonally in a 2.40:1 format, 113in. diagonally in a 16:9 format, or 93in. diagonally in a 4:3 format. Three different projection surfaces are available including a 2.7 gain surface for commercial and 3D applications that features a 60-degree half-gain angle.
The Video Conference Screen (VCS) from Stewart Filmscreen is an electric retractable system that incorporates housing for a camera. Available sizes include: 92in. diagonal (45”x80”), 100in. diagonal (49”x87”), and 110in. diagonal (54”x 96”). The screen can be outfitted with a variety of screen surfaces offered by Stewart. A standard three-button low-voltage wall switch is included with other control systems optional. The screen can be used without deployment of the camera.
The Vutec Corp. Lectric I-RR (self-supported surface) and Lectric III-RR (tab-tensioned surface) reverse-roll front-deployment screens are designed for applications where obstructions near the screen-mounting surface exist (such as a flatpanel TV). Screen sizes range from 72in. to 180in. (measured diagonally) in 4:3, 16:9, 16:10, and 2.35:1 formats. Five screen surfaces with gains ranging from .85 to 1.3 are available.