Crosstalk analysis, its effects and reduction techniques among photovoltaic devices used as transparent optical sensors for a wearable line-of-sight detection system

Carlos C.Cortes Torres, Kota Sampei, Miho Ogawa, Masataka Ozawa, Norihisa Miki

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Our group has developed a wearable eye-tracking system that comprises transparent optical sensors on eyeglasses to detect the reflection from the eye and thus, the position of the eye, where photovoltaic cells are used as the sensors. In this paper, crosstalk, or electric interference, among the photovoltaic cells is discussed. The crosstalk makes the neighboring sensors dependent on each other, which leads to large errors in eye-tracking. We experimentally investigated the source of crosstalk by testing different designs of photovoltaic cells and their interconnection. It was revealed that sharing of the electrolyte by the photovoltaic devices was dominant. In addition, overlapping circuits were found to contribute to the crosstalk. We revised the design of the sensors and successfully reduced the crosstalk and improved the accuracy.

本文言語English
論文番号06FP16
ジャーナルJapanese journal of applied physics
54
6
DOI
出版ステータスPublished - 2015 6 1

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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