Title:
TRACK ACTUATOR DEVICE OF OPTICAL HEAD
Document Type and Number:
Japanese Patent JP3852073
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To rotate a mirror around a prescribed central axis with a high degree of accuracy and small fluctuation in a track actuator device.
SOLUTION: A mirror 10 reflecting a laser beam is firmly fixed on an upper face of a mirror holder 20. By U-shaped blade springs 41, 42 disposed on the same planar surface of a reflection surface of the mirror holder 20, and U-shaped blade springs 43, 44 disposed on the same planar surface of a vertical back surface 23 (parallel to the optical axis of the objective lens 60) of the mirror holder 20, the mirror holder 20 is supported rotatably around the central axis C which is an intersection of these two plane and resiliently on a fixed base 30. On bottom faces 25, 24 of the mirror holder 20, coils 51, 53 are firmly fixed, and on upper faces 34, 33 of the fixed base 30, magnets 52, 54 are firmly fixed. The mirror holder 20 is driven to rotate around the central axis C by these coils 51, 53 and magnets 52, 54.
Inventors:
Ujiie Masahiko
Application Number:
JP2001328014A
Publication Date:
November 29, 2006
Filing Date:
October 25, 2001
Export Citation:
Assignee:
Pulsetec Industrial Co., Ltd.
International Classes:
G11B7/09; (IPC1-7): G11B7/09
Domestic Patent References:
| JP4255919A | ||||
| JP4259923A | ||||
| JP5128561A | ||||
| JP62262017A |
Attorney, Agent or Firm:
Sakio Oba
Shinji Kato
Shinji Kato