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Optical pick-up actuator, pick-up and CD drive

A technology of optical head and actuator, which is applied in the direction of optical recording/reproduction, instrument, head configuration/installation, etc., and can solve the problems of reducing the performance of the optical drive and unstable operation of the optical head.

Inactive Publication Date: 2004-03-10
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the negative resonance in the optical head actuator, the operation of the optical head becomes unstable and degrades the performance of the entire optical drive

Method used

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  • Optical pick-up actuator, pick-up and CD drive
  • Optical pick-up actuator, pick-up and CD drive
  • Optical pick-up actuator, pick-up and CD drive

Examples

Experimental program
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Embodiment Construction

[0025] Hereinafter, preferred embodiments of an optical head actuator, an optical head, and an optical drive according to the present invention will be described in detail with reference to the accompanying drawings.

[0026] image 3 is an exploded perspective view showing an embodiment of the optical head actuator according to the present invention, Figure 4 yes image 3 Top view of the optical head actuator shown.

[0027] see image 3 and Figure 4 , the optical head actuator includes a base 35 and a supporting plate 37 . A holder 34 is formed on one side of the base 35 and a magnetic drive part 30 is formed on the other side of the base 35 and in the holder 34 . A support plate 37 is coupled to the base 35 , and an objective lens 39 is seated on the opposite side of the support plate 37 to the holder 34 .

[0028] The magnetic driving part 30 includes: first and second yokes 33a and 33b fixed to the base 35; first and second magnets 31a and 31b connected to the fir...

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PUM

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Abstract

An optical pickup actuator, an optical pickup employing the optical pickup actuator, and an optical disc drive apparatus employing the optical pickup. The optical pickup actuator includes a blade on which an objective lens for condensing light onto an optical disc is mounted, and on which coils are wound, and a base which includes a plurality of driving magnets, which interact with current flowing through the coils, to generate force that drives the blade in a predetermined direction and a shielding magnet, which is arranged opposite to and has the same polarity as at least one of the driving magnets, to block leakage magnetic flux from the driving magnets.

Description

technical field [0001] The present invention relates to an optical head actuator, an optical head, and an optical drive, and more particularly, to an optical head actuator for blocking leakage magnetic flux, an optical head actuator using the same head, and an optical drive using the optical head. Background technique [0002] An optical head actuator is used as an optical recording device that records data to or reproduces data from an optical disc. Recently, as optical recording devices have become smaller and their access time to CD disks has become shorter, optical head actuators with smaller heights and faster tracking speeds have been required. In addition, the optical head actuator should be designed to be compatible with existing optical discs such as CD and DVD. [0003] Such an optical head actuator should have the same or wider working range as existing optical head actuators in order to meet the above requirements. The leakage magnetic flux generated by the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/085G11B7/09
CPCG11B7/0933G11B7/085
Inventor 权明植裵桢国
Owner SAMSUNG ELECTRONICS CO LTD