Patent ID: 9046679
Filing Date: 2015-06-02
Classification: B32B,G02B,Y10T

Abstract:
1. A wavelength variable interference filter, comprising: a first substrate which has a light transmissive property; a second substrate which has a light transmissive property and is disposed to face one surface of the first substrate and is bonded thereto via a first layer; a first reflection film which is provided on the first substrate; an electrode which is provided on the first substrate, the electrode being located adjacent to the first reflection film; a second reflection film which is provided on the first layer and faces the first reflection film with a gap interposed therebetween; and a variable section which varies the gap; wherein the first layer is formed on an entire surface of the second substrate, the first layer located in first, second and third areas respectively corresponds to an area where the first and second reflection films are provided, a peripheral of the first substrate and an area between the first area and the second area in the plan view, a first total thickness of the second substrate and the first layer in the third area is thinner than each of second and third total thicknesses of the second substrate and the first layer in the first and second areas, respectively, and the second and third total thicknesses are the same.