KR970007881A

KR970007881A - Optical Pickup Actuator with Correct Drive Center

Info

Publication number: KR970007881A
Application number: KR1019950022772A
Authority: KR
Inventors: 이관철
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1995-07-28
Filing date: 1995-07-28
Publication date: 1997-02-21

Abstract

본 발명은 구동력 중심을 보정한 광픽업 액츄에이터에 관한 것으로서, 서보시스템에서 전기적 신호를 인가받아 안착된 디스크의 반사면에 촛점을 집속시키는 대물렌즈(125)와 상기 대물렌즈(125)가 부착되어 상,하,좌,우로 구동하는 대물렌즈홀더(126)로 구성된 광픽업 액츄에이터에 있어서, 상기 대물렌즈홀더(126)의 사각형 공간부 내면에 부착되고 사각형 양측 모서리에 일정각도 경사져 있는 경사면(41)이 형성된 포커싱 조정코일(40)과, 상기 포커싱 조정코일(40)의 경사면(41)에 부착되는 트랙킹 조정코일(50)과, 상기 대물렌즈홀더(126)의 일면에 끼움 결합되어 무게 중심을 보정하는 발랜서(133)와, 상기 대물렌즈홀더(126)내에 설치된 포커싱 조정코일(40) 및 트랙킹 조정코일(50)이 유동가능하게 끼움 결합되는 내측 요오크(121)와, 상기 대물렌즈홀더(126)내의 포커싱 조정코일(40) 및 트랙킹 조정 코일(50)에 로렌츠 구동력을 발생시키는 영구자석(124)이 부착된 하나의 외측요오크(122)로 구성된 것을 특징으로 하는 구동력 중심을 보정한 광픽업 액츄에이터로서, 트래킹 조정 및 포커싱 조정시 발생되는 부공진을 해소하도록 해준다.The present invention relates to an optical pickup actuator for correcting a driving force center, and includes an objective lens 125 and an objective lens 125 for focusing a focus on a reflective surface of a disc seated upon receiving an electrical signal from a servo system. In the optical pickup actuator consisting of the objective lens holder 126 driving to the lower, left, right, the inclined surface 41 is attached to the inner surface of the rectangular space portion of the objective lens holder 126 and inclined at an angle to both sides of the square The focusing adjustment coil 40, the tracking adjustment coil 50 attached to the inclined surface 41 of the focusing adjustment coil 40, and the fitting is coupled to one surface of the objective lens holder 126 to correct the center of gravity An inner yoke 121 to which the balancer 133, the focusing adjustment coil 40 and the tracking adjustment coil 50 installed in the objective lens holder 126 are movably fitted, and the objective lens holder 126. Within An optical pick-up actuator having a center of driving force, comprising a single outer yoke 122 having a permanent magnet 124 that generates a Lorentz driving force on the cushing adjusting coil 40 and the tracking adjusting coil 50. This eliminates side resonances that occur during tracking, tracking and focusing adjustments.

Description

Optical Pickup Actuator with Correct Drive Center

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

제3도는 본 발명에 따른 무게 중심을 보정한 광픽업 액츄에이터 분해사시도, 제4도는 본 발명에 따른 무게 중심을 보정한 광픽업 액츄에이터의 외관 사시도, 제5도는 본 발명에 따른 대물렌즈 홀더의 사시도.3 is an exploded perspective view of an optical pickup actuator correcting a center of gravity according to the present invention, and FIG. 4 is an external perspective view of an optical pickup actuator correcting a center of gravity according to the present invention, and FIG. 5 is a perspective view of an objective lens holder according to the present invention.

Claims

The objective lens 125 for focusing the focus on the reflective surface of the disc seated by receiving an electrical signal from the servo system and the objective lens 125 is attached to the objective lens holder 126 to drive up, down, left and right. In the configured optical pickup actuator, a focusing adjustment coil (40) having an inclined surface (41) formed on an inner surface of the rectangular space portion of the objective lens holder (126) and inclined at an angle to both corners of the rectangle, and the focusing adjustment coil (40). And a tracking adjustment coil 50 attached to be able to match the focusing driving force center line and the tracking driving force center line on the inclined surface 41 of the c) and to be included in the magnetic field B generated by the permanent magnet 124. A balancer 133 fitted to one surface of the lens holder 126 to correct the center of gravity, and a focusing adjustment coil 40 and a tracking adjustment coil 50 installed in the objective lens holder 126 flow. One outer side of the inner yoke 121 that can be fitted and the permanent magnet 124 that generates Lorentz driving force to the focusing adjustment coil 40 and the tracking adjustment coil 50 in the objective lens holder 126 is attached. Optical pickup actuator, characterized in that composed of a yoke (122).

The driving force center of claim 1, wherein the focusing adjustment driving force centerline 70 of the focusing adjustment coil 40 and the tracking adjustment driving force centerline 60 of the tracking adjustment coil 50 coincide with each other. One optical pickup actuator.

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