KR970050331A

KR970050331A - Optical pickup device

Info

Publication number: KR970050331A
Application number: KR1019950054734A
Authority: KR
Inventors: 윤용섭
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1995-12-22
Filing date: 1995-12-22
Publication date: 1997-07-29

Abstract

광로 안내수단으로 광섬유를 채용한 광픽-업장치가 개시되어 있다.An optical pick-up apparatus employing an optical fiber as an optical path guide means is disclosed.

이 광픽-업장치는 광원과, 입사되는 빔을 분할하여 일부 투과 일부 반사시키는 광경로변환수단과, 광기록매체의 기록면에 광스폿이 형성되도록 광원에서 출사된 광빔을 수렴하는 대물렌즈와, 광기록매체의 기록면에 형성되는 광스폿의 크기를 조절할 수 있도록 대물렌즈를 구동하는 액츄에이터와, 광기록매체에서 반사된 광을 수광하는 광검출기과, 광빔의 진행방향을 안내하는 광섬유가 구비된다. 광섬유는 상호 관통된 세 개의 광빔 입사구와 출사구 및 입출사구를 가지며, 광빔입사구에는 광원의 일부가 인입되게 설치되고, 광빔 입출사구 내부에는 대물렌즈가인입설치되고, 출사구의 외부에는 광검출기가 설치되며, 광빔 입사구와 출사구 및 입출사구의 분기점에 광경로 변환수단이 설치된 것을 특징으로 한다.The optical pick-up apparatus includes a light source, optical path converting means for dividing and partially reflecting an incident beam, an objective lens for converging the light beam emitted from the light source to form an optical spot on the recording surface of the optical recording medium, An actuator for driving the objective lens to adjust the size of the light spot formed on the recording surface of the recording medium, a photodetector for receiving the light reflected from the optical recording medium, and an optical fiber for guiding the traveling direction of the light beam. The optical fiber has three light beam entrance holes, an exit hole, and an entrance and exit hole penetrating each other, and a part of a light source is installed in the light beam entrance hole, an objective lens is installed in the light beam entrance and exit hole, and a photodetector outside the exit hole. It is installed, characterized in that the light path conversion means is installed at the branching point of the light beam entrance and exit exit and exit exit.

Description

Optical pickup

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명에 따른 광 픽업장치의 일 실시예에 따른 광학적 배치를 보인 개략적인 구성도.Figure 3 is a schematic configuration showing an optical arrangement according to an embodiment of the optical pickup apparatus according to the present invention.

Claims

A light path converting means for dividing and partially reflecting a light source, an incident beam, an objective lens for converging the light beam emitted from the light source to form a light spot on the recording surface of the optical recording medium, and a recording surface of the optical recording medium An actuator for driving the objective lens to adjust the size of the light spot formed in the optical spot, a photodetector for receiving the light reflected from the optical recording medium, and an optical fiber for guiding the traveling direction of the light beam are provided. In the optical pick-up device, the optical fiber has three light beam entrance hole, the exit hole and the entrance and exit port penetrating each other, the light source is installed in the light beam entrance port, the objective lens is introduced into the light beam entrance and exit port The light detector is installed outside the exit port, and a branch point of the light beam entrance port, the exit port, and the exit port is provided. Up device - gwangpik wherein the conversion means into the light path is provided with the installation.

The optical pick-up device of claim 1, wherein the actuator is provided outside the optical fiber in which the objective lens is installed.

The optical pick-up apparatus according to claim 1, wherein the light beam entrance and exit port is narrowed into a hollow cone shape so as to limit the size of the light spot irradiated onto the recording surface of the optical recording medium.

The optical pick-up device according to claim 1, wherein the optical path converting means is a beam splitter configured to split the incident beam into a predetermined light quantity ratio and transmit and reflect the beam.

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