| 摘要 |
The invention relates to an optical scanning device (100, 100'), more particularly an optical resonance scanner, comprising a spring-elastic bending element (10), which can be excited to effect oscillations, more particularly to effect rotational oscillations about a longitudinal axis (A-A), by means of at least one stationary magnet (9) and by means of at least one stationary drive coil (5), wherein the drive coil (5) is wound around a pole shoe (20), which is magnetically coupled to the magnet (9) and has two mutually opposite free ends (21, 22) between which the bending element (10) is arranged symmetrically in such a way that between the bending element (10) and the free ends (21, 22) of the pole shoe (20) a magnetic flux can be transferred substantially perpendicularly to the longitudinal axis (A-A), wherein the magnet (9) is arranged symmetrically relative to the free ends (21, 22) of the pole shoe (20) in such a way that the magnetic flux generated by the magnet (9) couples to the bending element (10) substantially perpendicularly to the longitudinal axis (A-A), and in superimposition of the magnet- and coil-induced magnetic fluxes the magnet (9) and a first half (23) of the pole shoe (20) form a first magnetic circuit (30) and the magnet (9) and a second half (24) of the pole shoe (20) form a second magnetic circuit (31), which run in opposite senses with respect to one another in a plane perpendicularly to the longitudinal axis (A-A) through a magnetizable section (60) of the bending element (10). |
