In the vibrator 4, rectangular electrodes 6, 7, 8 and 9 are provided on each surface of quadratic prism shape piezoelectric body 5 extending to longitudinal Y-axis direction, and in the vicinity of electrodes 6 and 8 on the surface provided with the electrodes 6 and 8, a pair of band shape electrodes 10 and 11 and a pair of band shape electrodes 12 and 13 extending in the longitudinal direction in parallel are provided. この振動子4は、Y軸方向を長さ方向として延びた四角柱状の圧電体5の表面に対し、四角形の電極6,7,8,9を各面に設けると共に、電極6,8が設けられた面の電極6と電極8との近傍にそれぞれ長さ方向に平行に延びるように一対の帯状電極10,11と一対の帯状電極12,13とが設けられている。 - 特許庁
In the case of using a recursive reflector having bead type or prism type fine structure as a recursive reflector formed around a coordinate input area having an approximately rectangular plane shape, the recursive reflector is arranged on a rugged surface like a triangular wave or a trapezoidal wave having a fixed pitch smaller than 1/2 the width of an instruction means and larger by 4 times than the average size of the fine structure. 概略矩形平面状の座標入力領域の周囲に設けられる再帰性反射手段として、ビーズ型又はプリズム型の微細構造を有する再帰性反射体を用いたものであって、指示手段の幅の1/2より小さく、前記微細構造の平均寸法の4倍より大きい、一定ピッチを有する三角波状又は台形波状の凹凸面上に前記再帰性反射体を設けたものを用いる。 - 特許庁