| 摘要 |
This position detection device is provided with: a movable frame, which holds an optical element, and can move in the predetermined direction; a holding frame that holds the movable frame such that the movable frame can move in the predetermined direction; one or more magnets that are provided to the movable frame or the holding frame; one magnetic field detection element that detects the intensity of a magnetic field formed by the one or more magnets; a switching unit that switches, on the basis of the magnetic field intensity detected by the magnetic field detection element, position detection information for detecting the position of the movable frame with respect to the holding frame; and a position detection unit that detects, on the basis of the position detection information switched by the switching unit, the position of the movable frame with respect to the holding frame. |
