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Objective lens driving device

A driving device and objective lens technology, applied in the configuration/installation of the head, data recording, instruments, etc., can solve the problems such as the inability to obtain the damping effect, and achieve the effect of suppressing redundant resonance or non-standard gain and reducing the cost.

Inactive Publication Date: 2005-06-22
MITSUMI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] Usually, in the case of the driver, the other part of the suspension wire is filled with damping agent. With this method, proper damping effect cannot be obtained unless a large amount of damping agent is used.

Method used

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  • Objective lens driving device
  • Objective lens driving device
  • Objective lens driving device

Examples

Experimental program
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Embodiment Construction

[0053] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0054] figure 1 It is a perspective view of the objective lens driving device of the embodiment of the present invention, figure 2 yes figure 1 Front view of the objective lens drive unit, image 3 yes figure 1 Rear view of the objective lens drive unit, its up-down relationship with figure 2 on the contrary. also, Figure 4 yes figure 1 Top view of the objective lens drive unit, Figure 5 yes figure 1 Right side view of the objective lens drive unit, Image 6 yes figure 1 Left view of the objective lens drive unit, Figure 7 yes figure 1 Bottom view of the objective lens drive unit.

[0055] Such as Figure 1 to Figure 7 As shown, the objective lens driving device 100 has: a damping base 10; an objective lens 30; an objective lens frame 20; 4 suspension metal wires 1, 1, 1, 1 and 2 lead wires 2 that support the objective lens frame 20 swingably r...

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PUM

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Abstract

The present invention provides an objective lens driving device with reduced costs by arranging damping agents at appropriate positions on the driver of a symmetrical objective lens driving device with suspension metal wires to obtain an effective damping effect with a small amount of damping agent. The objective lens driving device (100) has: the objective lens frame (20) that the optical pick-up head uses and fixes the objective lens (30); Be respectively arranged on the both sides of the objective lens frame (20) and each end is fixed on the first fixed portion a suspension metal wire (1); a damping base (10) with two second and third fixing parts (12, 13) supporting the other end of the suspension metal wire (1), the second and second 3 The distance between the fixed parts (12, 13) is 1 / 5 to 2 / 5 times the distance between the first and third fixed parts (11, 13), and the second fixed part (12 ) is provided with a damping agent to softly support the suspension metal wire (1).

Description

technical field [0001] The present invention relates to an objective lens driving device for an optical disk drive, in particular to the supporting structure of the objective lens frame. Background technique [0002] Optical disc drives are used to read information recorded on optical discs (CD, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD+R, DVD-RAM, DVD+RW, DVD-RW, etc.), or a device for writing information. This type of optical disk drive includes an optical pickup for irradiating laser light on the optical disk and detecting reflected light in order to read information from the optical disk or write information to the optical disk. [0003] Generally, an optical pickup has a laser light source that emits a laser beam, and an optical system that guides the emitted laser beam to an optical disc and guides reflected light to a photodetector. In addition, this optical system includes an objective lens arranged to face the optical disk. [0004] For the focal length direction along t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/095G11B7/08G11B7/085G11B7/09
CPCG11B7/0933G11B7/095G11B7/1374G11B2220/2537
Inventor 山田司
Owner MITSUMI ELECTRIC CO LTD