Development of Position Detector with Large Sensing Area Using Frosted Glass
This paper proposes a new position detector using frosted glass and four photo detectors. Four photo detectors are arranged under the four comers of the rough surface of frosted glass. When this sensor is irradiated by laser pointer, the light repeats reflection in the frosted glass and arrives at the photo detectors. The light intensity decreases by the increasing of distance between the photo detector and the irradiating point. Therefore, the distance between a photo detector and the irradiation point can be worked out from the output of the photo detectors. Thus, the light irradiation point can be derived from the distances with the four photo detectors. This sensor is low cost and has a large sensing area. In addition, this sensor also can be used as a pointing device because the movement of the light on the frosted glass can be judged.
position detector photo detector large sensing area frosted glass laser pointer
Yuhki Kitazono Kohei Miyata Shota Nakashima Lifeng Zhang Seiichi Serikawa
Kitakyushu National College of Technology,5-20-1 Shii, Kokuraminami-ku, Kitakyushu-city, Fukuoka 802 Kyushu Institute of Technology,1-1 Sensui-cho, Tobataku, Kitakyushu-city, Fukuoka 804-8550, Japan Ube National College of Technology,2-14-1 Tokiwadai, Ube-city, Yamaguchi 755-8555, Japan Kyushu Institute of Technology,1-1 Sensui-cho, Tobata-ku, Kitakyushu-city, Fukuoka 804-8550, Japan
国际会议
湘潭
英文
600-605
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）