A lens barrier apparatus includes: swingable sectors opening and closing an opening, a swinging member swinging the sectors; and a drive portion driving the swinging member, and one ends of bias members biasing the sectors in a closing direction are provided at the sectors, the other ends of the bias members are provided at the swinging member, and when the sectors are at a closed position closing the opening, the swinging member is driven in the closing direction of the sectors against biasing forces of the bias members.

 
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