An alternative solution to displays for digital signage is the use of ultra-short throw (UST) projectors that can be placed within
inches of a projection surface. These are cheaper than displays for projecting large images and, according to NEC product manager Thomas Walter, are more flexible in positioning and effects. He said: “The creative possibilities open up experiential opportunities using pixel mapping, edge blending, geometric projection techniques and floor advertising.
With new light source technology, all the pitfalls and costs associated with lamp technology are gone, meaning all the advantages and creative opportunities of projection come back into play.”
He added: “The advent of laser projection is bringing a change in the retail AV landscape, offering wider scope to surprise and engage with shoppers with tactical marketing. Projection is more Point of Sale-friendly, making an impact without taking up premium retail space. UST projection is commonly used in areas where the environmental brightness conditions are fully controlled and are ideal for mapping and holographic applications.”
Interactivity and connectivity
Vivitek has added to its family of interactive ultra-short throw projectors with the DH759USTi and D756USTi capable of achieving a screen size of 100 inches at a distance of just 44cm. The DH759USTi features Full HD resolution, bright 3,500 ANSI lumens, a 10,000:1 contrast ratio, a lamp-life of up to 7,000 hours and a host of I/O connectivity options including dual HDMI inputs. The D756USTi has WXGA resolution, 3,300 ANSI lumens and a 10,000 hour lamp-life.
Optoma designed its ZH300UW UST projector for business, education and specialist AV applications. Featuring a solid-state
laserphosphor light engine instead of a traditional projector lamp, the ZH300UW has a brightness of 3,000 lumens and has a lamp-life of up to 20,000 hours. Unusually, the projector’s native resolution is 1920 x 720 pixels, with an ultrawide 16:6 aspect ratio that enables two 4:3 images to be shown side-by-side.
Wireless image sharing
NEC’s UM352Wi interactive UST projector facilitates collaboration and group learning. The 3,500 ANSI lumen projector includes a built-in interactive pen receiver and two interactive pens for white-boarding and annotation. An integrated wireless capability enables multiple devices to connect
simultaneously, while the embedded Miracast receiver allows instant mirroring of content from your device.