弾性表面波の進行波を用いた皮膚感覚ディスプレイ

抄録

A tactile display using progressive surface acoustic wave (SAW) was proposed. A progressive SAW tactile display module was fabricated on trial. The display provides alternative shear forces to an operator's fingertip as stimuli. The forces propagate into the fingertip skin as vibration and are perceived as tactile sensation. To indicate roughness sensation, the display was controlled so that the vibration according to operator's action could be generated. The vibration was measured to indicate validity of the display and its controller. For demonstration, the module was installed on a PC mouse button. Using the mouse, operators could enjoy roughness sensation as if they would rub on a rough solid surface. We also discussed tactile display application for a computer interface. Another controller was built to express screen darkness. While dragging over the screen, the display could provide different roughness according to the darkness under the mouse pointer.