Display Technology and Image
HELIODISPLAY
CHAPTER-1
INTRODUCTION
Over the years, display technology has been growing, from simple CRT to plasma screen. But now display technology has reached a stage where images can be displayed in thin air without the aid of a screen. A technology used for displaying images in thin air is called Heliodisplay. Heliodisplay is a technology developed by Chad Dyner, CEO for IO2 Technologies. In the Heliodisplay, a projector is focused onto a layer of mist in mid-air, resulting in a two-dimensional display that appears to float. This is similar in principle to the cinematic technique ofrear projection. As dark areas of the image may appear invisible, the image may be more realistic than on a projection screen, although it is still not volumetric. Looking directly at the display, one would also be looking into the projector 's light source. Heliodisplay can work as a free-space touchscreen when connected to a PC by a USB cable. A PC sees the Heliodisplay as a pointing device, like a mouse. With the supplied software installed, one can use a finger, pen, or another object as cursor control and navigate or interact with simple content. The mist is formed by a series of metal plates, and the original Heliodisplay could run for several hours on one liter of tap water.
1
HELIODISPLAY
CHAPTER-2
BASIC UNITS AND WORKING
2.1 BASIC UNITS
Heliodisplay projects images as shown in figure 2.1. The basic units of heliodisplay are base unit and projection source as shown in figure 2.2. The projection source unit projects images onto the mid-air. The base unit produces the water vapour screen necessary to display the image. The image can be viewed from behind the base unit. The Heliodisplay is designed to be hidden (into a pedestal, table etc), so that only its projected image is visible. The display connects to a standard video source (such as DVD player or PC) and projects any images that would be viewable on a computer screen or television. No specialized
CHAPTER-1
INTRODUCTION
Over the years, display technology has been growing, from simple CRT to plasma screen. But now display technology has reached a stage where images can be displayed in thin air without the aid of a screen. A technology used for displaying images in thin air is called Heliodisplay. Heliodisplay is a technology developed by Chad Dyner, CEO for IO2 Technologies. In the Heliodisplay, a projector is focused onto a layer of mist in mid-air, resulting in a two-dimensional display that appears to float. This is similar in principle to the cinematic technique ofrear projection. As dark areas of the image may appear invisible, the image may be more realistic than on a projection screen, although it is still not volumetric. Looking directly at the display, one would also be looking into the projector 's light source. Heliodisplay can work as a free-space touchscreen when connected to a PC by a USB cable. A PC sees the Heliodisplay as a pointing device, like a mouse. With the supplied software installed, one can use a finger, pen, or another object as cursor control and navigate or interact with simple content. The mist is formed by a series of metal plates, and the original Heliodisplay could run for several hours on one liter of tap water.
1
HELIODISPLAY
CHAPTER-2
BASIC UNITS AND WORKING
2.1 BASIC UNITS
Heliodisplay projects images as shown in figure 2.1. The basic units of heliodisplay are base unit and projection source as shown in figure 2.2. The projection source unit projects images onto the mid-air. The base unit produces the water vapour screen necessary to display the image. The image can be viewed from behind the base unit. The Heliodisplay is designed to be hidden (into a pedestal, table etc), so that only its projected image is visible. The display connects to a standard video source (such as DVD player or PC) and projects any images that would be viewable on a computer screen or television. No specialized
References: 1. Heliodisplay Floating Display; Tuesday, November 28, 2006 - Iddo Genuth 2. IO2 Technology intros floating M3 Heliodisplay screen by Darren Murphy Feb 28,2007 3. IEEE SPECTRUM August 2004,volume 37 4. DiVerdi, Rakkolainen, Hollerer, Olwal, A Novel Walk-through 3-D Display. Proceedings of SPIE 2006 Electronic Imaging, Vol.6055,428-437, January 2006. 5. Heliodisplay-Futuristic display technology by Bill Christensen, August,2005 6. Rakkolainen, K. Palovuori, Laser Scanning for the Interactive Walk-Through FogScreen. ACM Virtual Reality, Software and Technology (VRST 2005) Monterey, CA, USA, November 7-9, 2005 7. dnp Holo Screen. DNP, http://www.dnp.dk/. December 2005 17