Abstract
Detection of the line-of-sight (LOS) has various applications, such as communication technology and welfare field. To realize such applications, there is strong demand for an LOS detection system that does not restrict users' activities and inflicts no mental stress. In this paper, we propose a novel wearable pupil position detection system, featuring minimum disturbance to users, both physically and mentally, via the use of dye-sensitized photovoltaic devices. These devices are transparent and generate voltage according to the incident light intensity. Arraying the devices on eyeglasses, this system detects the difference in the reflection light from the pupil and the white of the eye and hence determines the position of the pupil.