By presenting curved surfaces of various curvatures including edges to the fingertip, it is possible to reproduce the haptic sensation of object shapes that cannot be reproduced by flat surfaces alone, such as spheres and rectangular objects. In this paper, we propose a method of presenting curved surfaces by controlling the inclination of a disk in contact with the finger belly with acoustic radiation pressure of ultrasound. The user only needs to mount a lightweight device on the fingertip to experience a tactile presentation with low physical burden. In the demonstration, the user can experience the sensation of stroking an edge and different curvatures of curved surfaces.

翻译：通过在指尖呈现包含边缘在内的不同曲率曲面，能够再现仅凭平面无法呈现的物体形状触感，例如球体与矩形物体。本文提出一种利用超声声辐射压力控制接触指腹的圆盘倾角，从而实现曲面呈现的方法。用户仅需在指尖佩戴轻量化装置，即可体验低生理负荷的触觉呈现。在演示中，用户可体验抚摸边缘及不同曲率曲面的触觉感受。