KR970071542A

KR970071542A - Compact optical pickup actuator

Info

Publication number: KR970071542A
Application number: KR1019960013004A
Authority: KR
Inventors: 이광석
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1996-04-26
Filing date: 1996-04-26
Publication date: 1997-11-07

Abstract

본 발명은 광픽업 액츄에이터에 관한 것으로서, 대물렌즈(25)가 상부면에 안치되는 대물렌즈홀더(50)와, 상기 대물렌즈홀더(50)의 저면에 위치되고, 중심부에 레이져 통과공(101)이 형성된 베이스 플레이트(120)로 구성된 광픽업 액츄에이터에 있어서, 상기 대물렌즈홀더(50)의 양측면에 ㄷ자 형상으로 형성된 끼움홈(53)과, 상기 끼움홈(53)내에 장착되어 강력한 자기력을 발생시키는 영구자석(60)과, 상기 영구자석(60)의 외측면에 일정거리를 두고 위치하고, 상기 베이스 플레이트(120)에 일정깊이 함몰되어 형성된 압입홈(122)에 끼워져 수직으로 돌출되는 일정한 두께 및 면적을 갖는 코일 요오크(70)와, 상기 코일 요오크(70)의 외주면에 수평으로 감겨지는 포커싱조정코일(73)과, 상기 코일 요오크(70)의 외주면에 수직으로 감겨지는 트랙킹조정코일(75)으로 구성된 것을 특징으로 하는 컴팩트형 광픽업 액츄에이터인 바, 광픽업 액츄에이터의 구성을 간단히 하므로써 광 픽업 액츄에이터의 조립성 및 생산성을 향상시키도록 해주는 효과를 갖는다.An objective lens holder (50) having an objective lens (25) on an upper surface thereof, a lens holder (50) disposed on the bottom surface of the objective lens holder (50) The objective lens holder 50 includes a base plate 120 and a base plate 120. The base plate 120 has a fitting groove 53 formed on both sides of the objective lens holder 50 in a C shape, A permanent magnet 60 and a permanent magnet 60. The permanent magnet 60 is fixed to the base plate 120 at a predetermined distance from the outer surface of the permanent magnet 60, A focusing adjusting coil 73 wound horizontally on the outer circumferential surface of the coil yoke 70 and a tracking adjusting coil 73 wound vertically on the outer circumferential surface of the coil yoke 70 75) The optical pick-up actuator of the present invention has an effect of improving the assemblability and productivity of the optical pickup actuator by simplifying the structure of the optical pick-up actuator.

Description

Compact optical pickup actuator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제3도는 본 발명에 따른 광픽업 액츄에이터의 요부 분해 사시도, 제4도는 본 발명에 따른 광픽업 액츄에이터의 분해 사시도, 제5도는 본 발명에 따른 광픽업 액츄에이터의 결합상태 사시도.FIG. 4 is an exploded perspective view of the optical pick-up actuator according to the present invention; FIG. 5 is a perspective view showing the optical pick-up actuator according to the present invention in a coupled state;

Claims

An objective lens holder 50 in which an objective lens 25 is placed on an upper surface of the objective lens holder 50 and a base plate 120 which is located on the bottom surface of the objective lens holder 50 and in which a laser passage hole 101 is formed, The actuator includes: a fitting groove (53) formed on both sides of the objective lens holder (50) in a C shape; a permanent magnet (60) mounted in the fitting groove (53) to generate a strong magnetic force; A coil yoke (70) having a predetermined thickness and area protruding vertically from a press-fit groove (122) formed at a predetermined distance from the outer surface of the base plate (120) A focusing adjusting coil 73 wound horizontally on the outer circumferential surface of the coil yoke 70 and a tracking adjusting coil 75 wound vertically on the outer circumferential surface of the coil yoke 70, Pick-up actuator .

The compact optical pickup actuator according to claim 1, wherein the permanent magnet (60) is bonded to the fitting groove (53) of the objective lens holder (50) by bonding.

The method as claimed in claim 1, wherein the outer surface of the coil yoke (70) is recessed to prevent the focusing and tracking adjusting coils (73, 75) wound on the coil yoke (70) A compact optical pick-up actuator.

※ Note: It is disclosed by the contents of the first application.