Beam, swinging element, and optical scanning apparatus

A beam for connecting a base substrate and a coil substrate to each other and supplying a current for swinging the coil substrate from the base substrate to the coil substrate in a swinging element for swinging a mirror that reflects light in an optical scanning apparatus, the beam comprising:

• a base connecting part to be connected to the base substrate;
• a coil connecting part to be connected to the coil substrate;
• and
• a beam part coupling the base connecting part to the coil connecting part,
• wherein at least one of the base connecting part and the coil connecting part has a soldering part to be soldered to the base substrate or the coil substrate,
• the soldering part includes a first connecting part and a second connecting part adjacent to the first connecting part, and
• when a direction in which the first connecting part and the second connecting part are adjacent to each other is defined as an adjacent direction, a cross-section of the first connecting part orthogonal to the adjacent direction is smaller in area than a cross-section of the second connecting part orthogonal to the adjacent direction.