Optical fiber scanner, optical scanning endoscope, and endoscope system

摘要

The optical fiber scanning device 10 applies a magnetic field M generated by a housing 11, an optical fiber 13 that emits light, a magnet 12 disposed in the optical fiber 13, and a received drive power signal to the magnet 12. Thus, a drive coil 30 for driving the optical fiber 13 and a detection coil 20 for outputting an induced electromotive force signal corresponding to a change in the magnetic field are provided, and the drive power signal is controlled based on the induced electromotive force signal. 30 and the detection coil 20 are planar spiral coils.