Paper Title:
Development of Position Detector with Large Sensing Area Using Frosted Glass
  Abstract

This paper proposes a new position detector using frosted glass and four photo detectors. Four photo detectors are arranged under the four corners 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.

  Info
Periodical
Edited by
Qiancheng Zhao
Pages
600-605
DOI
10.4028/www.scientific.net/AMM.103.600
Citation
Y. Kitazono, K. Miyata, S. Nakashima, L. F. Zhang, S. Seiichi, "Development of Position Detector with Large Sensing Area Using Frosted Glass", Applied Mechanics and Materials, Vol. 103, pp. 600-605, 2012
Online since
September 2011
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