Hy-Line - Holographic input via infrared:
A new terminal for holographic input from Hy-Line works completely without touch: the device is operated simply by marking virtual buttons in the air. The holographic input system can be divided into two individual parts: the generation of a holographic image and the detection of a touch event.
The holographic image is created by directing the content of an image source - in this case a display - through a special holographic plate. In addition to the angular deflection, a convergent bundling of the rays takes place there, which creates a virtual image floating freely in space. During integration, the optical laws for the beam path and reflections must be observed. As the brightness decreases due to the conversion, a display with a high luminance of approx. 1,000 cd/m² must be used. An infrared touch sensor is mounted below the virtual image. Its beam path is interrupted when the image is 'touched'. The interruption is evaluated as a touch event: as a single touch, multi-touch or as a gesture.