Patent ID: 8797650
Filing Date: 2014-08-05
Classification: G01J,G02B

Abstract:
1. 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.