Optical unit, smartphone, and manufacturing method of optical unit

A manufacturing method of an optical unit, the optical unit including

• an optical element that changes a traveling direction of light,
• a holder that holds the optical element,
• a first support portion that supports the holder swingably about a first swing axis,
• a first swing mechanism that swings the holder with respect to the first support portion about the first swing axis, and
• an elastic portion that connects the holder and the first support portion,
• the first support portion including a pair of side surface portions that are arranged on both sides of the holder in an axial direction of the first swing axis, and a connection portion that connects the pair of side surface portions,
• the manufacturing method of the optical unit, comprising:
• a process of attaching the optical element to the holder;
• a process of arranging the elastic portion at an end portion of the holder in the axial direction, and
• a process of arranging the holder and the elastic portion between the pair of side surface portions of the first support portion, wherein
• in the process of arranging the holder and the elastic portion,
• the elastic portion is arranged between the holder and the side surface portions,
• a convex portion or a concave portion included in the elastic portion comes into contact with a concave portion or a convex portion included in at least one of the holder and the first support portion,
• the convex portion of the elastic portion protrudes toward at least one of the holder and the first support portion,
• the concave portion of the elastic portion is recessed on a side opposite to at least one of the holder and the first support portion,
• the concave portion of at least one of the holder and the first support portion is recessed on a side opposite to the elastic portion, and
• the convex portion of at least one of the holder and the first support portion protrudes toward the elastic portion.