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Optical pickup and disc drive apparatus

A technology of optical pick-up and disc table, applied in
Background technique
000 field, can solve the problems of low-light pickup, limited thickness, difficult to manufacture, etc.

Inactive Publication Date: 2008-06-11
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, low-profile optical disc drives or so-called slim drives used in notebook personal computers have limited thickness, making it difficult to manufacture optical pickups with their own lower profile, where the limited thickness of the drive makes the The range of the laser beam is limited

Method used

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  • Optical pickup and disc drive apparatus
  • Optical pickup and disc drive apparatus
  • Optical pickup and disc drive apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The best modes of the optical pickup and optical disc drive apparatus of the present invention will be described below with reference to the accompanying drawings.

[0040] As shown in FIG. 1, an optical disk drive device 1 of the present invention has a housing 2 for accommodating various components and mechanisms. The housing 2 has a disc slot (not shown) defined in its side wall.

[0041] A chassis (not shown) is located on the housing 2, and the disc table 3 is fixed on the motor shaft of a spindle motor mounted on the chassis.

[0042] Two parallel guide shafts 4 are installed on the chassis. A screw 5 rotatable by a feed motor (not shown) is supported on the chassis.

[0043] The optical pickup 6 of the present invention has a movable base 7 , optical components mounted on the movable base 7 , and an objective lens adjuster 8 mounted on the movable base 7 . The movable base 7 has bearings 7 a, 7 b at both ends, ...

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Abstract

An objective lens actuator has a fixed block fixedly mounted on a movable base and a movable block movable with respect to the fixed block in focusing directions toward and away from recording surfaces of the disc-shaped recording mediums and tracking directions which are substantially radial directions of the disc-shaped recording mediums. A first objective lens is mounted on the movable block for focusing a first laser beam onto the recording surface of a digital versatile disc or a compact disc. A second objective lens is mounted on the movable block for focusing a second laser beam, which has a wavelength shorter than the first laser beam, onto the recording surface of a Blu-ray Disc. The first objective lens and the second objective lens are spaced from each in a tangential direction of recording tracks on the disc which is perpendicular to the focusing directions and the tracking directions. The first or second objective lens has a center positioned on a line which passes through the center of the disc and which extends in the radial directions of the disc. The first objective lens has a center positioned on a line which passes through the center of the second objective lens and which extends in the tangential direction.

Description

[0001] Cross References to Related Applications [0002] The present invention contains subject matter related to Japanese Patent Application JP2004-265381 filed in Japan Patent Office on September 13, 2004 and Japanese Patent Application JP2004-322338 filed in Japan Patent Office on November 5, 2004, both of which are The contents are incorporated herein by reference. Background technique [0003] The present invention relates to an optical pick-up and an optical disc drive device, more specifically, to an optical pick-up with an objective lens adjuster and an optical disc drive combined with the optical pick-up to play a variety of different types of optical discs, wherein the objective lens The adjuster accommodates two objective lenses. [0004] An optical disk drive device records information signals on and reproduces information signals from a disk-shaped recording medium such as an optical disk, a magneto-optical disk, or the like. Such an optical disk drive device ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/00G11B7/12G11B7/09G11B7/123G11B7/1374
Inventor 莳田真哉佐藤克利森则幸
Owner SONY CORP