Optical pick-up cutting off optical noise and optical recording and/of reproducing apparatus

PURPOSE: An optical pickup device interrupting an optical noise and an optical recording/playing device adopting the same are provided to interrupt the optical noise completely and simply by placing a monitoring optical pickup to a position that the light reflected from a signal detecting optical pi...

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Hauptverfasser: CHO, MYEONG CHEOL, PARK, GYEONG UI, SUNG, PYEONG YONG, YOO, BYEONG YEOL, KIM, UI YEOL
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creator CHO, MYEONG CHEOL
PARK, GYEONG UI
SUNG, PYEONG YONG
YOO, BYEONG YEOL
KIM, UI YEOL
description PURPOSE: An optical pickup device interrupting an optical noise and an optical recording/playing device adopting the same are provided to interrupt the optical noise completely and simply by placing a monitoring optical pickup to a position that the light reflected from a signal detecting optical pickup is not advanced. CONSTITUTION: A grating(13) splits the light emitted from a light source(10). A reflector partially reflects the light emitted from the light source by installing around the grating. The monitoring optical detector(11) is installed on an advancing path of the light reflected from the reflector. A light path converter(17) converts the advancing path of the light passing the grating. An objective lens(23) collects the light reflected by the light path converter to a disc(25). The signal detecting optical disc detector(30) detects a focus servo signal and a tracking servo signal by receiving the light reflected from the disc. 광 노이즈가 모니터링 광검출기에 입사되지 않도록 구조가 개선된 광픽업 장치 및 이를 채용한 광기록 및/또는 재생장치가 개시되어 있다. 이 개시된 광픽업 장치는, 광원으로부터 조사된 광 중 일부광이 대물렌즈에 의해 디스크에 집속되어 데이터가 기록되고, 상기 디스크에서 반사된 광이 신호 검출용 광검출기에 의해 수광되어 포커싱 및 트래킹 서보 구현을 하도록 된 광픽업 장치에 있어서, 상기 광원으로부터 조사된 광을 분할하는 그레이팅; 상기 그레이팅의 유효 구경 바깥쪽의 광의 진행 경로상에 배치되는 모니터링 광검출기;를 포함하는 것을 특징으로 한다. 상기 구성에 의해 모니터링 광검출기에 의한 모니터링시 신호검출용 광검출기에서 반사된 광 노이즈에 의한 영향이 완전히 배제되도록 하고, 그럼으로써 기록광 파워를 정확하게 측정할 수 있다.
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CONSTITUTION: A grating(13) splits the light emitted from a light source(10). A reflector partially reflects the light emitted from the light source by installing around the grating. The monitoring optical detector(11) is installed on an advancing path of the light reflected from the reflector. A light path converter(17) converts the advancing path of the light passing the grating. An objective lens(23) collects the light reflected by the light path converter to a disc(25). The signal detecting optical disc detector(30) detects a focus servo signal and a tracking servo signal by receiving the light reflected from the disc. 광 노이즈가 모니터링 광검출기에 입사되지 않도록 구조가 개선된 광픽업 장치 및 이를 채용한 광기록 및/또는 재생장치가 개시되어 있다. 이 개시된 광픽업 장치는, 광원으로부터 조사된 광 중 일부광이 대물렌즈에 의해 디스크에 집속되어 데이터가 기록되고, 상기 디스크에서 반사된 광이 신호 검출용 광검출기에 의해 수광되어 포커싱 및 트래킹 서보 구현을 하도록 된 광픽업 장치에 있어서, 상기 광원으로부터 조사된 광을 분할하는 그레이팅; 상기 그레이팅의 유효 구경 바깥쪽의 광의 진행 경로상에 배치되는 모니터링 광검출기;를 포함하는 것을 특징으로 한다. 상기 구성에 의해 모니터링 광검출기에 의한 모니터링시 신호검출용 광검출기에서 반사된 광 노이즈에 의한 영향이 완전히 배제되도록 하고, 그럼으로써 기록광 파워를 정확하게 측정할 수 있다.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title Optical pick-up cutting off optical noise and optical recording and/of reproducing apparatus
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