KR970050348A - Optical pickup device for both digital video disc player (DVDP) and compact disc player (CDP) - Google Patents

Optical pickup device for both digital video disc player (DVDP) and compact disc player (CDP) Download PDF

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Publication number
KR970050348A
KR970050348A KR1019950066908A KR19950066908A KR970050348A KR 970050348 A KR970050348 A KR 970050348A KR 1019950066908 A KR1019950066908 A KR 1019950066908A KR 19950066908 A KR19950066908 A KR 19950066908A KR 970050348 A KR970050348 A KR 970050348A
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KR
South Korea
Prior art keywords
optical
light
cdp
disc player
digital video
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KR1019950066908A
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Korean (ko)
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KR0165335B1 (en
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박노경
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김광호
삼성전자 주식회사
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Priority to KR1019950066908A priority Critical patent/KR0165335B1/en
Publication of KR970050348A publication Critical patent/KR970050348A/en
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Publication of KR0165335B1 publication Critical patent/KR0165335B1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

디지탈 비데오 디스크 플레이어(DVDP) 및 컴팩트 디스크 플레이어(CDP) 겸용 광픽-업장치가 개시되어 있다.Disclosed are an optical pick-up device for a digital video disc player (DVDP) and a compact disc player (CDP).

이 개시된 장치는 레이저 광을 생성 출사하는 광원과, 광디스크에 광스폿을 형성하도록 광원쪽에서 입사되는 광을 수렴하는 대물렌즈와, 광원과 대물렌즈 사이의 광축상에 배치되어 입사광의 진행 경로를 바꾸어주는 광경로변환수단과, 광디스크에서 반사된 광을 수광하여 정보 및 오차신호를 검출하는 광검출기가 구비하며, 광검출기는 서로 이웃하여 배치되고 각각 독립적으로 광을 수광할 수 있도록 A,B,C,D 네개의 분할판으로 이루어진 제1광검출부와, 독립적으로 광을 수광할 수 있도록 제1광검출부의 네 분할판 A,B,C,D의 외곽 각각에 서로 이웃하여 배치된 E,F,G,H 네개의 분할판으로 이루어진 제2광검출부가 구비되어 된 것을 특징으로 한다.The disclosed device is arranged on an optical axis between a light source for generating and outputting laser light, an objective lens for converging light incident from the light source to form an optical spot on the optical disk, and changing an optical path between the light source and the objective lens. An optical path converting means and a photodetector for receiving information reflected from the optical disk to detect information and error signals, wherein the photodetectors are arranged adjacent to each other and receive light independently from each other; D The first photodetection unit consisting of four partition plates and E, F, G disposed adjacent to each other on the periphery of the four partition plates A, B, C, and D of the first photodetector so as to receive light independently. , H is characterized in that the second light detection section consisting of four partition plates.

Description

디지탈 비데오 디스크 플레이어(DVDP) 및 컴팩트 디스크 플레이어(CDP) 겸용 광픽-업장치Optical pick-up unit for both digital video disc player (DVDP) and compact disc player (CDP)

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

제1도는 통상적인 광픽-업장치의 광학적 구성의 일예를 보인 개략도.1 is a schematic view showing an example of an optical configuration of a conventional optical pick-up device.

제3도는 본 발명에 따른 광픽-업장치에 채용된 광검출기의 실시예를 보인 개략도.3 is a schematic view showing an embodiment of a photodetector employed in the optical pick-up apparatus according to the present invention.

Claims (3)

레이저 광을 생성 출사하는 광원과, 광디스크에 광스폿을 형성하도록 상기 광원쪽에서 입사되는 광을 수렴하는 대물렌즈와, 상기 광원과 대물렌즈 사이의 광축상에 배치되어 입사광의 진행 경로를 바꾸어주는 광경로변환수단과, 상기 광디스크에서 반사된 광을 수광하여 정보 및 오차신호를 검출하는 광검출기가 구비되어 된 디지탈 비데오 디스크 플레이어(DVDP) 및 컴팩트 디스크 플레이어(CDP) 겸용 광픽-업장치에 있어서, 상기 광검출기는 서로 이웃하여 배치되고 각각 독립적으로 광을 수광할 수 있도록 A,B,C,D 네개의 분할판으로 이루어진 제1광검출부와, 독립적으로 광을 수광할 수 있도록 상기 제1광검출부의 네 분할판 A,B,C,D의 외곽 각각에 서로 이웃하여 배치된 E,F,G,H 네개의 분할판으로 이루어진 제2광검출부가 구비되어 된 것을 특징으로 하는 DVDP 및 CDP 겸용 광픽업장치.A light source for generating and outputting laser light, an objective lens for converging light incident from the light source to form an optical spot on the optical disk, and an optical path disposed on an optical axis between the light source and the objective lens to change the path of incident light An optical pick-up device for a digital video disc player (DVDP) and a compact disc player (CDP) having a converting means and a photo detector for receiving information reflected from the optical disc to detect information and an error signal. The detector is arranged adjacent to each other and each of the first photodetector comprising four partition plates A, B, C, D to receive light independently, and the four first photodetector to receive light independently. A DVD having a second light detection unit comprising four partition plates E, F, G, and H arranged adjacent to each other on the outer edges of the partition plates A, B, C, and D. Optical pickup device for both P and CDP. 제1항에 있어서, 상기 대물렌즈는 디지탈 비데오 디스크의 기록면에 광스폿이 형성되도록 개구수 0.6을 가지며, 상기 분할판 A,B,C,D는 상기 디지탈 비데오 디스크의 정보 및 오차신호를 검출하고, 상기 제1광검출부와 제2광검출부의 이웃한 분할판 A+E,B+F,C+G,D+H는 상기 컴팩트 디스크의 정보 및 오차신호를 검출하도록 된 것을 특징으로 하는 DVDP 및 CDP 겸용 광픽업장치.The optical lens of claim 1, wherein the objective lens has a numerical aperture of 0.6 so that light spots are formed on the recording surface of the digital video disk, and the dividers A, B, C, and D detect information and an error signal of the digital video disk. And adjacent partitions A + E, B + F, C + G, and D + H of the first and second photodetectors detect information and an error signal of the compact disc. CDP combined optical pickup. 제1항에 있어서, 상기 대물렌즈는 컴팩트 디스크의 기록면에 광스폿이 형성되도록 개구수 0.45를 가지며, 상기 분할판 A,B,C,D는 상기 컴팩트 디스크의 정보 및 오차신호를 검출하고, 상기 분할판 A+E,B+F,C+G,D+H는 상기 디지탈 비데오 디스크의 정보 및 오차신호를 검출하도록 된 것을 특징으로 하는 DVDP 및 CDP 겸용 광픽업장치.The optical disc of claim 1, wherein the objective lens has a numerical aperture of 0.45 to form an optical spot on a recording surface of the compact disc, and the partition plates A, B, C, and D detect information and an error signal of the compact disc. Dividers A + E, B + F, C + G, D + H is a DVDP and CDP combined optical pickup device characterized in that to detect information and error signals of the digital video disk. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950066908A 1995-12-29 1995-12-29 Optical pick-up apparatus for a digital video disk palyer and a compact disk player KR0165335B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950066908A KR0165335B1 (en) 1995-12-29 1995-12-29 Optical pick-up apparatus for a digital video disk palyer and a compact disk player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950066908A KR0165335B1 (en) 1995-12-29 1995-12-29 Optical pick-up apparatus for a digital video disk palyer and a compact disk player

Publications (2)

Publication Number Publication Date
KR970050348A true KR970050348A (en) 1997-07-29
KR0165335B1 KR0165335B1 (en) 1999-03-20

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