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Patent Searching and Data


Title:
UP, DOWN, LEFT AND RIGHT SHIFTING DEVICE OF OBJECTIVE LENS FOR OPTICAL PICKUP DEVICE
Document Type and Number:
Japanese Patent JPS58155529
Kind Code:
A
Abstract:

PURPOSE: To attain a thin optical pickup device, by arragning a tracking driving section and a focus driving section in parallel with a disc and on the same line via a tracking moving frame, focusing parallel plate spring and an up/down, left/right moving section.

CONSTITUTION: The tracking driving section consisting of a tracking driving permeanent magnet 18 and a tracking control square coil 17, is arranged in parallel with a focus driving permanent magnet 11 comprising a permanent magnet piece and a magnetic piece, a focus driving section comprising a focus control square coil 14, and a disk D on the same line via a tracking moving frame 16, a focusing parallel plate spring 15, and an up/down, right/left moving section 13. Thus, the size H2 to the Z axis direction of the optical pickup device is decreased, and the thickness of the optical device is made thin.


Inventors:
MATSUI TSUTOMU
Application Number:
JP3850582A
Publication Date:
September 16, 1983
Filing Date:
March 11, 1982
Export Citation:
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Assignee:
AKAI ELECTRIC
International Classes:
G11B7/09; G11B7/08; (IPC1-7): G02B7/02
Attorney, Agent or Firm:
Miki Akira