Filter unit

Abstract

A filter unit includes a housing including a first wall portion having a light passing portion, a second wall portion facing the first wall portion, and a surrounding portion surrounding a region between the first wall portion and the second wall portion; a Fabry-Perot interference filter including a pair of mirror sections facing each other in a first direction and having a variable distance from each other, the Fabry-Perot interference filter being disposed in the housing so as to overlap the light passing portion when viewed from the first direction; a wiring substrate attached to the housing so as to be at least partially embedded in the surrounding portion, the wiring substrate being electrically connected to the Fabry-Perot interference filter; and an adhesive member disposed between the wiring substrate and the housing.

Dependencies are inferred from the claim text.