KR950034119A - Optical pickup - Google Patents

Optical pickup Download PDF

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Publication number
KR950034119A
KR950034119A KR1019940010434A KR19940010434A KR950034119A KR 950034119 A KR950034119 A KR 950034119A KR 1019940010434 A KR1019940010434 A KR 1019940010434A KR 19940010434 A KR19940010434 A KR 19940010434A KR 950034119 A KR950034119 A KR 950034119A
Authority
KR
South Korea
Prior art keywords
polarization
laser
prism
polarized
optical disk
Prior art date
Application number
KR1019940010434A
Other languages
Korean (ko)
Other versions
KR0171077B1 (en
Inventor
최양오
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019940010434A priority Critical patent/KR0171077B1/en
Publication of KR950034119A publication Critical patent/KR950034119A/en
Application granted granted Critical
Publication of KR0171077B1 publication Critical patent/KR0171077B1/en

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Classifications

    • 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
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
    • 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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127—Lasers; Multiple laser arrays
    • 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
    • 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
    • G11B7/1359—Single prisms
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G11B7/24038—Multiple laminated recording layers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)

Abstract

본 발명은 광 픽업을 개시한다. 본 발명은, 각각 P편광과 S편광을 발생시키며 서로 직각 방향으로 배열 설치된 편광 레이저와, 상기 편광 레이저의 광 경로상에 위치되며 상기 편광 레이저로부터 주사된 P,S편광 중 어느 하나의 편광은 전반사시키고 다른 하나의 편광은 전투과 시키는 편광 프리즘과, 상기 편광 프리즘과 광 디스크 사이에 위치되며 상기 P,S편광을 광 디스크에 집속시키는 집속수단을 포함하여 된 것을 특징으로 하는 것으로서, P,S편광을 발생시키는 편광 레이저와, 이들 P,S편광을 각각 전반사, 전투과 시키는 편광 프리즘에 의해 한쪽면에 복수의 기록층을 가지는 광 디스크에 기록/재생을 행할 수 있다.The present invention discloses an optical pickup. According to the present invention, a polarization laser which generates P polarization and S polarization, respectively, and which is arranged in a direction perpendicular to each other, and the polarization of any one of the P and S polarizations which are located on the optical path of the polarization laser and scanned from the polarization laser are total reflection. And the other polarization includes a polarization prism for combating and focusing means positioned between the polarization prism and the optical disk and focusing the P and S polarization on the optical disk. Recording / reproducing can be performed on an optical disk having a plurality of recording layers on one side by a polarizing laser to be generated and a polarizing prism which causes these P and S polarizations to totally reflect and fight.

Description

광 픽업Optical pickup

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

제3도는 본 발명에 따른 광 픽업의 개략도.3 is a schematic diagram of an optical pickup according to the present invention.

Claims (2)

각각 P편광과 S편광을 발생시키며 서로 직각 방향으로 배열 설치 편광레이저와, 상기 P,S편광 레이저의 광 경로상에 위치되며 상기 편광 레이저로 부터 주사된 P,S편광 중 어느 하나의 편광은 전반사시키고 다른 하나의 편광은 전투과 시키는 편광 프리즘과, 상기 편광 프리즘과 광 디스크 사이에 위치되며 상기 P,S편광을 광디스크에 집속시키는 집속수단을 포함하여 된 것을 특징으로 하는 광 픽업.Each of the polarized lasers, which generate P polarized light and S polarized light, is arranged in a direction perpendicular to each other, and is polarized in any one of the P and S polarized light which is located on the optical path of the P and S polarized lasers and scanned from the polarized laser. And a polarization prism for the other one to be combated, and a focusing means positioned between the polarization prism and the optical disc and focusing means for focusing the P and S polarization on the optical disc. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940010434A 1994-05-13 1994-05-13 A recording and reproducing optical pickup system for optical disk with plural recording layer in one side by generating successively different polarization beam KR0171077B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940010434A KR0171077B1 (en) 1994-05-13 1994-05-13 A recording and reproducing optical pickup system for optical disk with plural recording layer in one side by generating successively different polarization beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940010434A KR0171077B1 (en) 1994-05-13 1994-05-13 A recording and reproducing optical pickup system for optical disk with plural recording layer in one side by generating successively different polarization beam

Publications (2)

Publication Number Publication Date
KR950034119A true KR950034119A (en) 1995-12-26
KR0171077B1 KR0171077B1 (en) 1999-04-15

Family

ID=19382982

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940010434A KR0171077B1 (en) 1994-05-13 1994-05-13 A recording and reproducing optical pickup system for optical disk with plural recording layer in one side by generating successively different polarization beam

Country Status (1)

Country Link
KR (1) KR0171077B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19643105A1 (en) * 1996-10-21 1998-04-23 Thomson Brandt Gmbh Device for reading or writing to an optical record carrier

Also Published As

Publication number Publication date
KR0171077B1 (en) 1999-04-15

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