KR950006732A

KR950006732A - Optical Pickup Actuator for Optical Disc Player

Info

Publication number: KR950006732A
Application number: KR1019930016845A
Authority: KR
Inventors: 최인호
Original assignee: 이헌조; 주식회사 금성사
Priority date: 1993-08-27
Filing date: 1993-08-27
Publication date: 1995-03-21

Abstract

본 발명은 광디스크 플레이어의 광픽업 액츄에이터에 관한 것이다. 종래에는 트랙 방향과 포커스 방향으로 가진하기 위한 자기회로가 양쪽에 쌍으로 두개가 존재함으로써 전체적으로 구성이 복잡한 단점이 있었으며, 또한 부피가 증대되는 등, 여러가지로 불합리한 면이 있었다. 본 발명은 광자기 디스크에 광을 주사시켜 정보를 읽는 와이어 타입 광픽업 액츄에이터에 있어서, 트래킹 코일 및 포커싱 코일, 베이스 등의 부품이 줄어들고, 자기회로의 요크도 단순화되며, 또한 전체 액츄에이터의 크기를 현저하게 줄여 박형의 고성능 광픽업 액츄에이터의 실현이 가능하게 되고, 도한, 양방향에서 힘을 가진할때와 비교하여 한 곳에서의 가진점은 가동부 무게중심의 정밀한 설계로 자기회로에서의 힘의 불균형 요소를 최소로 하는 등, 와이어 특성인 롤링 현상을 감소시키도록 한 것이다.The present invention relates to an optical pickup actuator of an optical disc player. Conventionally, two magnetic circuits for excitation in the track direction and the focus direction exist in pairs on both sides, and thus, the overall configuration has a disadvantage. In addition, there are various unreasonable aspects such as increased volume. The present invention provides a wire type optical pickup actuator that reads information by scanning light onto a magneto-optical disk, in which components such as tracking coils, focusing coils, bases, etc. are reduced, the yoke of the magnetic circuit is simplified, and the size of the entire actuator is remarkable. It is possible to realize a thin, high-performance optical pickup actuator by reducing it. Also, compared with the case of the force in both directions, the excitation point in one place is a precise design of the center of gravity of the moving part. It is to reduce the rolling phenomenon which is a wire characteristic, such as to minimize it.

Description

Optical Pickup Actuator for Optical Disc Player

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제4도는 본 발명에 의한 광디스크 플레이어의 광픽업 액츄에이터를 보인 분해 사시도,4 is an exploded perspective view showing an optical pickup actuator of an optical disc player according to the present invention;

제5도는 (가) 내지 (다)는 본 발명에 의한 광디스크 플레이어의 광픽업 액츄에이터를 구성하는 가동부의 구성도,5 is a block diagram of a movable part constituting an optical pickup actuator of an optical disc player according to the present invention;

제6도는 본 발명에 의한 광디스크 플레이어의 광픽업 액츄에이터를 구성하는 요크의 단면도.6 is a cross-sectional view of a yoke constituting an optical pickup actuator of an optical disc player according to the present invention.

Claims

A moving part having an objective lens for guiding the scanning beam on a track of a recording or reproducing scanned disk recording medium and a tracking coil and a focusing coil are placed on the moving part to generate a force by interaction between a magnetic circuit composed of a yoke and a magnet. An optical pickup actuator for displacing a lens in a direction orthogonal to or parallel to a scanning surface of a recording medium by a wire for holding the movable part, comprising: a center of gravity of the movable part supported by the tracking coil and the focusing coil, and a yoke and a magnet; An optical pickup actuator of an optical disc player, characterized in that a balancer is used on the opposite side of the objective lens to match the excitation points of the constructed magnetic circuit.

The optical pickup actuator of claim 1, wherein one tracking coil and one focusing coil are provided.

The optical pickup actuator of claim 1, wherein one yoke and one magnet are provided.

4. The optical pickup actuator of claim 3, wherein a wire base is integrally formed with the yoke.

※ Note: The disclosure is based on the initial application.