Patent ID: 8917461

Claim:
An optical device comprising: a first holding frame which holds an optical system; a second holding frame which supports the first holding frame; an elastic body having elasticity, and which is provided between the first holding frame and the second holding frame when viewed from a first direction crossing an optical axis of the optical system; a position determining portion which is provided so as to sandwich, with the elastic body, the first holding frame when viewed from the first direction, and which is capable of determining a position of the first holding frame towards the elastic body so as to give rise to an elastic force at the elastic body; a fixing portion which is provided so as to sandwich, with the position determining portion, the first holding frame when viewed from the first direction, and which is capable of fixing the first holding frame to the position determining portion so as to fix the first holding frame; and an energizing member which energizes the first holding frame towards the second holding frame in a position determining direction of the first holding frame by the position determining portion and a second direction crossing a fixing direction of the first holding frame by the fixing portion; and a pressure receiving portion provided respectively in (i) a portion at which the position determining portion abuts with the first holding frame, and (ii) a portion at which the fixing portion abuts with the first holding frame, the pressure receiving portion having an inclined surface that is inclined relative to the second direction and having a larger diameter on a second holding frame side than a first holding frame side.