Volumetric haptic display
A volumetric haptic display (VHD) is similar to a (visual) volumetric display, but informs touch instead of vision. A VHD projects a touch-based representation of a surface onto a 3D volumetric space. Users can feel the projected surface(s), usually with their hands. The display is otherwise not detectable, and offers no visual feedback. There are no known instances of a fully operational VHD at this time.
Technological implementation
The University of Bristol has developed a method for haptic feedback that could be integrated into a volumetric display. The system uses focused ultrasound to create a haptic object in mid air.[1]
Feedback
The following feedback can be provided to the user:
- Surface contact
- Surface texture
- Vibration
- Motion-based/topological changes of surface
See also
- Optacon (two-dimensional)
- Refreshable Braille Display (two-dimensional).
- Wired glove (partial 3D representation).
References
- Long, Benjamin; Seah, Sue Ann; Carter, Tom; Subramanian, Sriram (2014). "Rendering volumetric haptic shapes in mid-air using ultrasound: Proceedings of ACM SIGGRAPH Asia 2014". ACM Transactions on Graphics. University of Bristol. 33 (6). Retrieved 19 November 2020.
- Belexes research project in the Centre for Music Technology at the University of Glasgow.
- "Researchers in Japan have developed a display that makes 3D objects solid enough to grasp."
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