Image pickup unit and endoscope

An image pickup unit, comprising:

• a front group lens frame holding a front group lens;
• a rear group lens frame fitted to the front group lens frame and holding a rear group lens;
• a correction frame fixed within the rear group lens frame;
• a movable frame disposed to be movable forward and backward in a direction along a photographing optical axis within the correction frame, and holding a movable lens;
• a stopper provided in the correction frame, the stopper restricting movement of the movable frame in one direction of the photographing optical axis by coming into contact with the movable frame, to achieve one of focal lengths of an observation optical system;
• an adhesive bonding the front group lens frame to the rear group lens frame;
• and
• an adhesive outflow preventing portion preventing the adhesive from flowing out toward the movable frame side.