抄録
Previously, pen-tablet type tactile display has been developed. For the display, a tablet with an ultrasonic transducer has been utilized. In this case, tactile sensation presentation area is limited. To overcome the size problem, we have also proposed a stylus with a built-in ultrasonic transducer. On these tactile displays, friction between the top of the stylus and the tablet was controlled by intermittent contact due to ultrasonic vibration. As a result, we can enjoy the tactile sensation by rotational vibration of the stylus. To enhance reality of presented sensation, we focus on stylus vibration along the stylus axis. To investigate the possibility of the in-axis vibration of the stylus, the vibration was measured by a laser Doppler velocimeter with amplitude modulated driving voltage. Measurement result indicates that the vibration contained a vibration with the frequency of the modulation.
