Electronic eyeglasses

Electronic eyeglasses comprising:

• a control module that is accommodated in a temple;
• an accommodating unit that is located in a rear end portion of the temple, and that is open on an inner surface and a rear surface continuous with the inner surface of the temple so as to detachably accommodate a power supply unit;
• a power supply unit that has a first electrical connection terminal;
• and
• a second electrical connection terminal that is accommodated in the temple, and that is electrically connected to the first electrical connection terminal of the power supply unit accommodated in the accommodating unit so as to supply power from the power supply unit to the control module,
• wherein, from a front end toward a rear end, the power supply unit includes:
• the first electrical connection terminal;
• a first housing unit that holds a first battery, the first housing unit comprising a planarly arc-shaped side surface;
• a narrow portion that has a side surface connected to the planarly arc-shaped side surface, wherein the side surface of the narrow portion is narrower than the planarly arc-shaped side surface;
• and
• a second housing unit that holds a second battery, wherein the second housing unit comprises a side surface connected to the side surface of the narrow portion, and
• wherein the accommodating unit has a protruding portion that is configured to be elastically deformed so as to be fitted to the narrow portion of the power supply unit, and
• wherein, in a state where the power supply unit is mounted on the accommodating unit, the planarly arc-shaped side surface of the first housing unit, the side surface of the narrow portion, and the side surface of the second housing unit are covered by the protruding portion, a rear surface and an upper surface adjacent to the rear surface of the housing unit of the power supply unit in a direction in which the power supply unit is inserted into the accommodating unit are respectively exposed from the rear surface and the inner surface of the temple so as to form a portion of a surface of the temple, and the power supply unit is not exposed on an outer surface of the temple which is located on a side opposite to the inner surface of the temple.