Patent ID: 9651770
Date: 2017-05-16
CPC Classifications: G01J,G02B

Claim:
1. An interference filter comprising: a substrate; a second substrate opposed to the substrate; a first reflecting film disposed on one surface of the substrate, the first reflecting film being formed of a plurality of layers; a second reflecting film opposed to the substrate, the second substrate being provided with the second reflecting film, and the second reflecting film being formed of a plurality of layers; an electrode disposed on the first reflecting film; and a second electrode is disposed on the second reflecting film, wherein the first reflecting film includes a first region facing the second reflecting film, and a second region in an area extending from the first region to an outer circumferential edge of the substrate; wherein the second reflecting film occupies a region of the second substrate opposed to the first reflecting film, and extends from the region to an outer circumferential edge of the second substrate; and wherein the first region is an optical interference region, and the electrode overlaps the optical interference region.