Emerging Technologies

HORN : The Hapt-Optic Reconstruction

Interaction with mid-air floating images expands human-computer interface possibilities. This project proposes a system that superposes haptic sensation on mid-air floating images using ultrasonic standing waves. Conventional approaches of using airborne ultrasound can only apply weak pressure to the finger surface from limited directions and generate air flow as a side-effect.

The use of focused standing waves generated by HORN's surrounding phased-array system enables creation of spatially varying acoustic pressures in all directions. In addition, this method suppresses the air flow. Such spatial variation of acoustic pressure produces a haptic feeling of an elastic surface and offers a rich haptic experience. Combined with ultrasonic beam steering and mid-air floating images generated by numerous micro-corner reflectors, this system can display a virtual spherical gadget that is “pinchable” and “movable". It offers intuitive human-computer interaction.

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Seki Inoue
The University of Tokyo

Koseki Kobayashi Kirschvink
The University of Tokyo

Yasuaki Monnai
The University of Tokyo

Keisuke Hasegawa
The University of Tokyo

Yasutoshi Makino
The University of Tokyo

Hiroyuki Shinoda
The University of Tokyo