Patent ID: 8466900

Claim:
A capacitance sensor, comprising: a first electrode including a first region that is gradually larger in height, with respect to a width direction parallel to a first direction, in parallel with a second direction orthogonal to the first direction, a second region that is gradually smaller in height with respect to the width direction, and a third region that causes the first region and the second region to be opposed to each other; a second electrode that is opposed to the first region in the second direction, and gradually smaller in height with respect to the first direction, in parallel with the second direction; a third electrode that is opposed to the second region in the second direction, and gradually larger in height with respect to the first direction, in parallel with the second direction; and a support body configured to support a plurality of electrode groups each including the first, second, and third electrodes in such a state that the plurality of electrode groups are connected to each other via the third region, and to arrange the plurality of electrode groups along the second direction.