Optical scanning apparatus

摘要

An optical scanning apparatus for efficiently performing scanning with light by efficiently increasing amplitude of an emission end of an optical fiber is provided. The optical scanning apparatus includes an optical fiber that guides illumination light emitted from a light source so that the illumination light is emitted from the emission end, a magnetic body fixed to the optical fiber, and a magnetic field generating unit changing a magnetic field to act on the magnetic body to displace a position of the emission end in a radial direction by magnetic force, and the magnetic field generating unit includes a plurality of coils for individually generating magnetic fields acting on the magnetic body at positions separate from each other in a longitudinal direction of the optical fiber, and the magnetic fields acting on the magnetic body can be individually adjusted at the positions.

主权项

1. An optical scanning apparatus comprising:
an optical fiber that guides illumination light emitted from a light source so that the illumination light is emitted from an emission end; an elongated magnetic body that is fixed to an outer surface of the optical fiber, the elongated magnetic body being arranged in a direction in which a longitudinal direction thereof is parallel to a longitudinal direction of the optical fiber; and a plurality of coils that change a magnetic field to act on the elongated magnetic body to displace a position of the emission end in a direction orthogonal to the longitudinal direction of the optical fiber by magnetic force, wherein:
a winding axis of at least one individual coil of the plurality of coils is offset in the longitudinal direction of the optical fiber relative to a winding axis of at least one other individual coil of the plurality of coils; andat least a portion of each of the individual coils of the plurality of coils overlap with at least a portion of the elongated magnetic body in the longitudinal direction.