Patent ID: 9063516
Filing Date: 2015-06-23
Classification: G04C,G04G,H01L,Y02E

Abstract:
1. A timepiece comprising: a dial plate; and a solar battery which is disposed on a rear surface side of the dial plate, wherein the dial plate has an area larger than the solar battery, the solar battery is encompassed by the dial plate in a planar view, the dial plate is provided with grooves which have a function of condensing incident light, and each of the grooves are defined between a radially inside surface and a radially outside surface, inclination angles of the radially inside surfaces with respect to a normal line of the dial plate decreasing as moving radially outwardly from a center of the dial plate, inclination angles of the radially outside surfaces with respect to the normal line of the dial plate being the same with respect to each other.