Patent ID: 8981281
Filing Date: 2015-03-17
Classification: G02B

Abstract:
1. An optical module comprising: a tunable interference filter including a first substrate, a second substrate that faces the first substrate, a first reflective film that is disposed on the first substrate, a second reflective film that is disposed on the second substrate and faces the first reflective film through a gap, a gap changing unit that changes a size of the gap, and a driving electrode line that is electrically connected to the gap changing unit; a temperature sensor that detects temperature of the tunable interference filter and has a first sensor wiring and a second sensor wiring; and a filter driving circuit unit including a driving circuit that is electrically connected to the driving electrode line and a temperature detecting circuit that is electrically connected to the second sensor wiring, to which a temperature detection signal output from the temperature sensor is input, wherein the first sensor wiring is electrically connected to the driving electrode line.