RESONATOR ELEMENT
卷宗概要
发明人
Kazuyuki Nagata
IPC 分类
CPC 分类
A resonator element includes first to third vibrating arms and weights disposed at respective tip end portions of the first to third vibrating arms. When a weight mass ratio A represented by M/Mis plotted on a horizontal axis and an arm width ratio B represented by W/Wis plotted on a vertical axis, where Mis a mass of the weight disposed on the first vibrating arm, Mis a mass of the weight disposed on each of the second and third vibrating arms, Wis a width of the first vibrating arm, and Wis a width of each of the second and third vibrating arms, a point (A, B) is located in a region surrounded by a polygon formed by connecting six points of (A, B)=(2.39, 2), (0.01, 2), (0.23, 1.6), (1.65, 1), (7.15, 1), and (4.02, 1.6) with straight lines.
原文（中文）
A resonator element includes first to third vibrating arms and weights disposed at respective tip end portions of the first to third vibrating arms. When a weight mass ratio A represented by M/Mis plotted on a horizontal axis and an arm width ratio B represented by W/Wis plotted on a vertical axis, where Mis a mass of the weight disposed on the first vibrating arm, Mis a mass of the weight disposed on each of the second and third vibrating arms, Wis a width of the first vibrating arm, and Wis a width of each of the second and third vibrating arms, a point (A, B) is located in a region surrounded by a polygon formed by connecting six points of (A, B)=(2.39, 2), (0.01, 2), (0.23, 1.6), (1.65, 1), (7.15, 1), and (4.02, 1.6) with straight lines.