Variable wavelength interference filter, optical module, and optical analysis device

A wavelength-variable interference filter comprising:

• a first substrate;
• a second substrate that is opposite to the first substrate and that has a movable section moving back and forth with respect to the first substrate;
• a first reflecting film that is provided at a first surface of the first substrate, the first surface being opposite to the second substrate;
• a second reflecting film that is provided at a second surface of the movable section, the second surface being opposite to the first substrate, and the second reflecting film being opposite to the first reflecting film via a predetermined first gap;
• a first electrode that is provided at a third surface of the first substrate the third surface being opposite to the second substrate;
• a second electrode that is provided at a fourth surface of the second substrate, the fourth surface being opposite to the first substrate, and the second electrode being opposite to the first electrode via a predetermined second gap;
• a first electrode wire that is provided at the first substrate so as to extend from the first electrode toward an outer circumferential edge of the first substrate;
• a second electrode wire that is provided at the second substrate so as to extend from the second electrode toward an outer circumferential edge of the second substrate;
• a first opposite electrode wire that is provided at the second substrate, that is opposite the first electrode wire, and that is isolated from the second electrode;
• and
• a first conductive section adapted to electrically connect the first electrode wire with the first opposite electrode wire,
• wherein the second electrode wire and the first opposite electrode wire extend in respective directions that pass through a center point of an imaginary circle centered on a center point of the movable section in a plan view viewed from a first thickness direction of the second substrate and that divide the imaginary circle at regular angular intervals.