Infrared sensor and infrared sensor array

An infrared sensor comprising:

• a base substrate;
• a bolometer infrared receiver;
• a first beam;
• a second beam;
• first wiring;
• second wiring;
• and
• an infrared reflection film, wherein:
• each of the first beam and the second beam has a connection portion connected to the base substrate and/or a member on the base substrate and a separated portion away from the base substrate, and is physically joined to the infrared receiver at the separated portion,
• the infrared receiver is supported by the first beam and the second beam to be away from the base substrate,
• the infrared receiver includes a lower electrode, an upper electrode, and a resistance change film including a resistance change material an electrical resistance of which changes with temperature,
• the resistance change film is sandwiched by the lower electrode and the upper electrode in a thickness direction,
• each of the lower electrode and the upper electrode is electrically connected to the resistance change film,
• the lower electrode and the upper electrode are electrically connected to the first wiring and the second wiring, respectively,
• the lower electrode has a first line-and-space structure,
• the upper electrode has a second line-and-space structure,
• an alignment direction of the first line-and-space structure and an alignment direction of the second line-and-space structure are different from each other in plan view, and
• the infrared reflection film is provided at a position on a surface of the base substrate facing the infrared receiver.