A mask having a plurality of through holes and a mold having a plurality of cavities are provided, and the through holes and the cavities are aligned. Accordingly, it is possible to make effective use of a movable range of the shake correction unit for actual hand shake or the like. At the base of this insert on the inner side of the bottle, longitudinal arches supporting a central pellet make star-shaped passageways radially guiding the air that enters the bottle after having passed through the porous pad.