| 摘要 |
An optical scanner (1) includes: a movable portion (11) that is provided with a light-reflective light reflection portion (114) and is swingable around a first axis (Y); a frame body portion (13) that is swingable around a second axis (X) that crosses the first axis; a first shaft portion (12a, b) that connects the movable portion and the frame body portion; a fixed portion (15); a second shaft portion (14a, b) that connects the frame body portion and the fixed portion; a strain detection element (51, 52) that is disposed in the second shaft portion to detect deformation of the second shaft portion; a first signal processing portion (71) to which a detection signal of the strain detection element is input and that outputs a signal based on bending deformation of the second shaft portion; and a second signal processing portion (72) to which a detection signal of the strain detection element is input and that outputs a signal based on torsional deformation of the second shaft portion. |
