KR920022229A - 광픽업 - Google Patents

광픽업 Download PDF

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Publication number
KR920022229A
KR920022229A KR1019910007716A KR910007716A KR920022229A KR 920022229 A KR920022229 A KR 920022229A KR 1019910007716 A KR1019910007716 A KR 1019910007716A KR 910007716 A KR910007716 A KR 910007716A KR 920022229 A KR920022229 A KR 920022229A
Authority
KR
South Korea
Prior art keywords
light
optical pickup
single lens
hologram
light source
Prior art date
Application number
KR1019910007716A
Other languages
English (en)
Other versions
KR930007024B1 (ko
Inventor
김춘동
Original Assignee
강진구
삼성전자 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 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019910007716A priority Critical patent/KR930007024B1/ko
Priority to US07/826,112 priority patent/US5198916A/en
Priority to JP4017880A priority patent/JP2528231B2/ja
Publication of KR920022229A publication Critical patent/KR920022229A/ko
Application granted granted Critical
Publication of KR930007024B1 publication Critical patent/KR930007024B1/ko

Links

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
    • G11B7/13—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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/32—Holograms used as optical elements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
    • 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
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • 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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0856—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors
    • G02B17/086—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors wherein the system is made of a single block of optical material, e.g. solid catadioptric systems

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

내용 없음

Description

광픽업
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1실시예에 의한 광픽업의 단면도.
제2도는 본 발명의 제2실시예에 의한 광픽업의 단면도.
제3도는 본 발명의 실시예에 따른 3빔법의 광검출 원리를 설명하기 위한 빔궤적도.

Claims (7)

  1. 광을 집속하는 매질로서 일측 매질면 중앙부에 입사광을 타측 매질면 쪽으로 반사하는 동시에 광정보매체에서 반사되는 반사광으로 부터 구면파가 회절되어 그 촛점 이외의 다른 한점에 집속되게 하는 소정의 홀로그램패턴을 갖는 홀로그램부 반사면이 형성되어 있는 비구면 단렌즈; 상기 비구면 단렌즈의 홀로그램부 반사면으로부터 반사하는 광의 일부가 그 비구면 단렌즈를 경유하여 상기 매질에 주사되게 하는 동시에 상기 반사광이 경유하게 하는 반사경; 상기 비구면 단렌즈의 홀로그램부 반사면에 대하여 상기 입사광을 제공하는 광원; 및 상기 비구면 단렌즈의 홀로그램부 반사면으로부터 오는 광을 검출하는 광검출기를 포함하여, 광정보의 재생 또는 기록동작을 수행하도록 구성된 것을 특징으로 하는 광픽업.
  2. 제1항에 있어서, 상기 비구면 단렌즈의 광원측 매질 표면에 상기 광원의 광을 회절시키는 회절격자가 부착되고, 상기 홀로그램부 반사면의 홀로그램 패턴과 상기 광검출기가 상기 회절격자의 회절광으로부터 재생신호, 포커스/트랙 오차신호를 검출하도록 형성된 것을 특징으로 하는 광픽업.
  3. 제2항에 있어서, 상기 홀로그램 패턴이 서로 다른 2개의 패턴으로 형성된 것을 특징으로 하는 광픽업.
  4. 제1항 또는 제2항 중의 어느 한 항에 있어서, 상기 광원의 가우스빔 분포에서 빔의 여분을 이용하여, 상기 디스크의 진동으로 인한 포커스 및/또는 트랙오차검출에러를 보상하기 위한 에러검출수단이 더 구비된 것을 특징으로 하는 광픽업.
  5. 제4항에 있어서, 상기 에러검출수단이 상기 광원의 양측에 배치되는 적어도 한쌍의 광센서를 구비하여 각각 상기 반사광의 일부를 검출하도록 구성되는 것을 특징으로 하는 광픽업.
  6. 제1항에 있어서, 컵형 케이스를 구비하여 상기 비구면 단렌즈를 그 케이스의 상단 개구내에 결합시킨 것을 특징으로 하는 광픽업.
  7. 제1항에 있어서, 상기 케이스가 비자성체인 것을 특징으로 하는 광픽업.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910007716A 1991-05-13 1991-05-13 광픽업 KR930007024B1 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019910007716A KR930007024B1 (ko) 1991-05-13 1991-05-13 광픽업
US07/826,112 US5198916A (en) 1991-05-13 1992-01-27 Optical pickup
JP4017880A JP2528231B2 (ja) 1991-05-13 1992-02-03 光ピックアップ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910007716A KR930007024B1 (ko) 1991-05-13 1991-05-13 광픽업

Publications (2)

Publication Number Publication Date
KR920022229A true KR920022229A (ko) 1992-12-19
KR930007024B1 KR930007024B1 (ko) 1993-07-26

Family

ID=19314380

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910007716A KR930007024B1 (ko) 1991-05-13 1991-05-13 광픽업

Country Status (3)

Country Link
US (1) US5198916A (ko)
JP (1) JP2528231B2 (ko)
KR (1) KR930007024B1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190097622A (ko) 2018-02-12 2019-08-21 옥광호 친환경 층간소음 방지구조
KR102152327B1 (ko) 2020-02-21 2020-09-07 옥광호 친환경 바닥재를 이용한 층간소음 방지구조

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5422870A (en) * 1991-09-27 1995-06-06 Matsushita Electric Industrial Co., Ltd. Optical pickup for information recording/reproducing apparatus
US5566157A (en) * 1991-09-27 1996-10-15 Matsushita Electric Industrial Co., Ltd. Optical pickup for information recording/reproducing apparatus having polygon prism, hologram, and grating lens
US5377177A (en) * 1991-09-27 1994-12-27 Matsushita Electric Industrial Co., Ltd. Optical pickup having first and second reflecting surfaces and hologram
US5465247A (en) * 1992-05-14 1995-11-07 Olympus Optical Co., Ltd. Optical head
KR970010940B1 (ko) * 1994-04-08 1997-07-02 엘지전자 주식회사 광픽업장치
US5783818A (en) * 1995-05-08 1998-07-21 Matsushita Electric Industrial Co., Ltd. Integrated type optical pickup having packaging with gas-tight seal
KR100200868B1 (ko) * 1995-12-22 1999-06-15 윤종용 광픽업 장치
GB2326760B (en) * 1997-06-28 2002-02-13 Mitel Semiconductor Ab Optical source with monitor
US5883745A (en) * 1997-06-30 1999-03-16 Polycom, Inc. Mirror assembly and method
US5995304A (en) * 1997-07-02 1999-11-30 Fuji Photo Optical Co., Ltd. Plastic lens
GB2327297A (en) * 1997-07-14 1999-01-20 Mitel Semiconductor Ab Lens cap
US6721262B1 (en) 1997-09-22 2004-04-13 Seagate Technology Llc Aperture stop for a flying optical head
WO1999016063A1 (en) * 1997-09-22 1999-04-01 Seagate Technology, Inc. Aperture stop for a flying optical head
KR101068670B1 (ko) * 2002-10-17 2011-09-28 코닌클리케 필립스 일렉트로닉스 엔.브이. 경사 검출기능을 갖는 광학주사장치
DE10354780A1 (de) * 2003-11-21 2005-06-30 Schott Ag Refraktiv-diffraktive Hybridlinse, insbesondere zur Strahlformung von Hochleistungsdiodenlasern

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JPS59231738A (ja) * 1983-06-14 1984-12-26 Mitsubishi Electric Corp 光ピツクアツプ
JP2539350B2 (ja) * 1983-12-16 1996-10-02 株式会社日立製作所 光ヘツド装置
JPS61216138A (ja) * 1985-03-20 1986-09-25 Asahi Optical Co Ltd 光学式デイスクに対する光ピツクアツプ装置の追従方法
EP0258890B1 (en) * 1986-09-02 1993-03-31 Fuji Photo Film Co., Ltd. Optical pickup apparatus
EP0288033B1 (en) * 1987-04-20 1993-04-07 Fuji Photo Film Co., Ltd. Pickup apparatus for magneto-optical recording medium
US4945527A (en) * 1987-09-30 1990-07-31 Fuji Photo Film Co., Ltd. Optical pickup apparatus for detection of focusing error, tracking error, and information
US4929823A (en) * 1987-10-05 1990-05-29 Matsushita Electric Industrial Co., Ltd. Optical pickup head with holographic servo signal detection using a spot size detection system
JPH01101804A (ja) * 1987-10-14 1989-04-19 Touyoushiya:Kk 成畝機における畝の硬化整形装置
JPH01277402A (ja) * 1988-04-28 1989-11-07 Kawabe Nouken Sangyo Kk 作物栽培床造成方法および作物栽培床造成装置
JPH01311428A (ja) * 1988-06-09 1989-12-15 Matsushita Electric Ind Co Ltd 光ヘッド装置及びこれを用いた光情報装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190097622A (ko) 2018-02-12 2019-08-21 옥광호 친환경 층간소음 방지구조
KR102152327B1 (ko) 2020-02-21 2020-09-07 옥광호 친환경 바닥재를 이용한 층간소음 방지구조

Also Published As

Publication number Publication date
KR930007024B1 (ko) 1993-07-26
JPH04341942A (ja) 1992-11-27
US5198916A (en) 1993-03-30
JP2528231B2 (ja) 1996-08-28

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