Pickup device

Abstract

Abstract PURPOSE:To reduce the capacity around the optical axis of a lens by moving a coil for driving in the direction of the optical axis of the lens and a print coil for driving in the direction orthogonal to the optical axis as one body together with the lens and forming an intersecting part where parts of both coils cross each other at about right angles. CONSTITUTION:A lens 12 is attached to a cylindrically flanged lens frame 13, and the lens frame 13 is attached to a magnetic field generating means 16 through springs 14 and dampers 15, and the lens frame 13 can be moved in the direction of the optical axis and the radial direction. A coil bobbin 17 is attached to the lens frame 13, and four print coils 18-21 are provided on the surface of the bobbin 17, and a coil 22 for driving in the direction of the optical axis is wound on coils 18-21. Since a magnetic field going from the outside to the inside is formed in a gap 23 by the magnetic field generating means 16, the bobbin 17 to which the lens 12 is fixed is moved in the direction orthogonal to the optical axis of the lens if a current in a proper direction is flowed to coils 18-21, and the coil bobbin 17 is moved in the direction of the optical axis if a current is flowed to the coil 22.

Inventors

• 👤 Shunpei Tanaka
• 👤 俊平 田中

Bibliographic Details