| abstract |
An optical device including: one or more optical components configured to be electrically actuated such that light transmission states are variable, a driver circuit for the optical components, a power source unit for driving the optical components, a pair of rims for supporting the optical components, a pair of temples having front and rear ends and being connected at the front ends to the pair of rims, and a pair of earpieces formed at the rear ends of the pair of temples. The power source unit includes a secondary battery, and a power receiver coil for charging the secondary battery. The secondary battery includes a case made of a non-magnetic material. |