Optical module

An optical module comprising:

• a mirror unit including a mirror device including a movable mirror portion provided with a coil;
• and
• a magnet unit including a first magnet, a second magnet, and a third magnet arranged along a first direction, and configured to generate a magnetic field acting on the movable mirror portion,
• wherein the mirror unit is disposed on the magnet unit in a second direction perpendicular to the first direction,
• a width of the first magnet in the first direction is equal to or more than a width of the second magnet in the first direction and is equal to or more than a width of the third magnet in the first direction,
• an upper surface of the first magnet is located on a mirror unit side with respect to an upper surface of the second magnet and an upper surface of the third magnet in the second direction, or is located at the same position as one of the upper surface of the second magnet and the upper surface of the third magnet and on the mirror unit side with respect to the other of the upper surface of the second magnet and the upper surface of the third magnet in the second direction,
• the mirror unit is fixed to at least the upper surface of the first magnet,
• when viewed from the second direction, the first magnet has a pair of side surfaces opposite to each other in the first direction,
• each side surface of the pair of side surfaces extends along a third direction perpendicular to the first direction, and
• the second magnet is fixed to one of the pair of side surfaces, and the third magnet is fixed to the other of the pair of side surfaces,
• a length of the first magnet in the second direction is longer than a length of the second magnet in the second direction, or longer than a length of the third magnet in the second direction.