Shutter unit and imaging apparatus

An imaging apparatus comprising a shutter unit,

• wherein the shutter unit includes:
• a base plate having an aperture and to which a first blade member and a second blade member are rotatably attached;
• a first blade operation member movable integrally with the first blade member between a first movement completion position that provides a retreat state where the first blade member retreats from the aperture, and a first movement start position that provides a closed state where the first blade member closes the aperture;
• a second blade operation member movable integrally with the second blade member between a second movement completion position that provides a closed state where the second blade member closes the aperture, and a second movement start position that provides a retreat position where the second blade member retreats from the aperture;
• a first charge member configured to charge the first blade operation member from the first movement completion position to the first movement start position;
• and
• a second charge member configured to charge the second blade operation member from the second movement completion position to the second movement start position,
• wherein the first charge member and the second charge member include coaxially arranged cam gears and are configured to rotate in opposite directions.