Patent ID: 9348072
Filing Date: 2016-05-24
CPC Classification: G02B

Claim Text:
1. An optical filter device comprising: an interference filter which includes a first substrate, a second substrate which opposes the first substrate, a first reflection film which is provided on the first substrate, and a second reflection film which is provided on the second substrate and opposes the first reflection film with a predetermined gap interposed therebetween; and a housing which includes a base substrate for loading the interference filter and accommodates the interference filter, wherein the interference filter is fixed with respect to the base substrate by a fixing member which is disposed on one portion of the outside, in a plan view, of a filter region including the first reflection film and the second reflection film, spacer portions which are lower than a height of the fixing member are formed outside of the filter region and on portions separated from the fixing member, and the spacer portions are protrusions formed on the surface of the second substrate facing the base substrate.