Patent ID: 9075198
Filing Date: 2015-07-07
Classification: G02B

Abstract:
1. A wavelength tunable interference filter, comprising: a first substrate; a second substrate that is disposed so as to face the first substrate and includes a support portion that supports the first substrate; a first optical film provided on the first substrate; a first driving electrode that is provided on the first substrate and that is located outside the first optical film in plan view; a second optical film that is provided on the second substrate and that is disposed so as to face the first optical film; and a second driving electrode that is provided on the second substrate and that is disposed between the second optical film and the support portion so as to face the first driving electrode in the plan view, wherein the second substrate includes an external connection electrode extending to an outer side of the support portion, and includes an electrode forming surface on which the external connection electrode is disposed, and a plurality of protruding portions protruding from the electrode forming surface are formed so as to be arrayed in a direction crossing the extending direction of the external connection electrode.