KR870010499A - 광학헤드 - Google Patents

광학헤드 Download PDF

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Publication number
KR870010499A
KR870010499A KR1019860002685A KR860002685A KR870010499A KR 870010499 A KR870010499 A KR 870010499A KR 1019860002685 A KR1019860002685 A KR 1019860002685A KR 860002685 A KR860002685 A KR 860002685A KR 870010499 A KR870010499 A KR 870010499A
Authority
KR
South Korea
Prior art keywords
optical
collimator lens
incident
recording medium
optical head
Prior art date
Application number
KR1019860002685A
Other languages
English (en)
Other versions
KR950000899B1 (ko
Inventor
아끼라 나까무라
히로시 오오이노우에
도모유끼 이시다
겐지 신따니
Original Assignee
소니 가부시끼가이샤
오오가 노리오
소니가부시끼 가이샤
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 소니 가부시끼가이샤, 오오가 노리오, 소니가부시끼 가이샤 filed Critical 소니 가부시끼가이샤
Publication of KR870010499A publication Critical patent/KR870010499A/ko
Application granted granted Critical
Publication of KR950000899B1 publication Critical patent/KR950000899B1/ko

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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
    • G11B7/1362—Mirrors
    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • 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
    • G11B7/0908—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 for focusing only
    • G11B7/0909—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 for focusing only by astigmatic methods
    • 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
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
    • 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
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration

Landscapes

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

Abstract

내용 없음

Description

광학헤드
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 광학헤드의 제1실시예에 대한 측면도.
제2도는 본 발명의 광학헤드의 제1실시예에 있어서 하프미터에 대한 측면도.
제3도는 본 발명의 광학헤드의 제1실시예에 있어서 광학소자에 대한 측면도.

Claims (1)

  1. 광원으로부터의 빔을 콜리메이터 렌즈 및 대물렌즈를 거쳐서 광학기록매체로 입사시킴과 동시에 이 광학기록매체로부터의 빔을 상기 대물렌즈 및 상기 콜리메이터 렌즈를 거쳐서 광 검출기로 입사 시키도록 한 광학헤드에 있어서,
    판상의 하프미러와 코마수차 보정용의 광학소자를 각각 구비하고,
    상기 광원으로부터의 상기 빔을 상기 하프미러에 의해 반사시켜서 상기 콜리메이터 렌즈도 유도함과 동시에, 이 콜리메이터 렌즈를 투과한 상기 광학기록매체로부터의 상기 빔을 상기 하프미터를 투과시킴으로써 비점수차를 발생시키고 또한 상기 광학소자를 통과시킴으로써 코마수차를 보정한 상태에서 상기 광 검출기로 입사시키도록 한 것을 특징으로 하는 광학헤드.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019860002685A 1985-04-09 1986-04-09 광학헤드 KR950000899B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP60075059A JPS61236035A (ja) 1985-04-09 1985-04-09 光学ヘツド
JP85-75059 1985-04-09
JP75059 1985-04-09

Publications (2)

Publication Number Publication Date
KR870010499A true KR870010499A (ko) 1987-11-30
KR950000899B1 KR950000899B1 (ko) 1995-02-03

Family

ID=13565250

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019860002685A KR950000899B1 (ko) 1985-04-09 1986-04-09 광학헤드

Country Status (6)

Country Link
US (1) US4709139A (ko)
EP (1) EP0198655B1 (ko)
JP (1) JPS61236035A (ko)
KR (1) KR950000899B1 (ko)
CA (1) CA1259216A (ko)
DE (1) DE3686080T2 (ko)

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JPS629537A (ja) * 1985-07-08 1987-01-17 Pioneer Electronic Corp 光学式ピツクアツプ装置
US5189651A (en) * 1986-05-12 1993-02-23 Pioneer Electronic Corporation Optical system in magneto-optical recording and reproducing device
JPH0810854Y2 (ja) * 1986-05-12 1996-03-29 パイオニア株式会社 光磁気記録媒体再生装置
EP0255305B1 (en) * 1986-07-28 1993-01-07 Sharp Kabushiki Kaisha Focusing error detecting device and method of manufacturing the same
US4978844A (en) * 1986-07-31 1990-12-18 Pioneer Electronic Corporation Optical element carrying printed substrate and optical head device using the substrate
US4792674A (en) * 1986-07-31 1988-12-20 Pioneer Electronic Corporation Optical head assembly and element holder with positional adjustment
JPH0514334Y2 (ko) * 1986-10-01 1993-04-16
US4886959A (en) * 1986-11-27 1989-12-12 Canon Kabushiki Kaisha Optical information reproducing apparatus
JPH0677332B2 (ja) * 1988-05-31 1994-09-28 株式会社三協精機製作所 光ピックアップ
JPH077510B2 (ja) * 1988-05-31 1995-01-30 アルプス電気株式会社 光学式ピックアップにおけるビームスプリッタの固定構造
JP2904434B2 (ja) * 1988-08-12 1999-06-14 パイオニア株式会社 光学式情報記録媒体及びその再生装置
US5036185A (en) * 1988-12-27 1991-07-30 Kabushiki Kaisha Toshiba Optical apparatus for detecting a focusing state
DE3942943A1 (de) * 1989-12-23 1991-06-27 Thomson Brandt Gmbh Optische abtastvorrichtung
JP2779229B2 (ja) * 1989-09-29 1998-07-23 パイオニア株式会社 非点収差発生装置
JPH0492236A (ja) * 1990-08-07 1992-03-25 Asahi Optical Co Ltd 光ディスク装置の光学系
JP3157873B2 (ja) * 1991-11-15 2001-04-16 パイオニア株式会社 光ピックアップ装置における焦点制御装置
GB9208076D0 (en) * 1992-04-03 1992-05-27 Rank Brimar Ltd Spatial light modulator system
EP0602732A3 (en) * 1992-12-17 1995-09-27 Philips Electronics Nv Optical system with astigmatism compensation.
JP3626003B2 (ja) * 1997-10-06 2005-03-02 富士通株式会社 光学的情報記憶装置
KR20040014943A (ko) * 2001-06-29 2004-02-18 코닌클리케 필립스 일렉트로닉스 엔.브이. 광학주사장치
ATE350688T1 (de) * 2001-10-16 2007-01-15 Koninkl Philips Electronics Nv Optischer abtaster
JP4058638B2 (ja) * 2004-02-10 2008-03-12 船井電機株式会社 光ピックアップ装置
JP2006079798A (ja) * 2004-08-09 2006-03-23 Sanyo Electric Co Ltd 光ピックアップ装置
JP2009110558A (ja) * 2007-10-26 2009-05-21 Sanyo Electric Co Ltd 光ピックアップ装置
US9958257B2 (en) * 2015-09-21 2018-05-01 Kla-Tencor Corporation Increasing dynamic range of a height sensor for inspection and metrology

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US2868066A (en) * 1957-09-09 1959-01-13 Aerojet General Co Optical rectifier
SE312927B (ko) * 1967-12-22 1969-07-28 Aga Ab
NL7907216A (nl) * 1979-09-28 1981-03-31 Philips Nv Optisch fokusfout-detektiestelsel.
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US4412723A (en) * 1981-05-28 1983-11-01 The Perkin-Elmer Corporation Optical system for correcting the aberrations of a beamsplitter in converging light
JPS59167863A (ja) * 1983-03-14 1984-09-21 Minolta Camera Co Ltd 光デイスク用光学系
US4541688A (en) * 1984-06-11 1985-09-17 Eastman Kodak Company Optical beam splitters
JPS6161240A (ja) * 1984-09-03 1986-03-29 Hitachi Ltd 光学式信号再生装置
JPS61148641A (ja) * 1984-12-21 1986-07-07 Pioneer Electronic Corp 光学装置
GB8600749D0 (en) * 1986-01-14 1986-02-19 Gower M C Apparatus incorporating phase conjugate mirrors
JPH0750526B2 (ja) * 1986-03-15 1995-05-31 ソニー株式会社 デイスクプレ−ヤの光学ヘツド装置

Also Published As

Publication number Publication date
KR950000899B1 (ko) 1995-02-03
EP0198655A2 (en) 1986-10-22
DE3686080D1 (de) 1992-08-27
DE3686080T2 (de) 1993-03-04
CA1259216A (en) 1989-09-12
JPS61236035A (ja) 1986-10-21
US4709139A (en) 1987-11-24
EP0198655A3 (en) 1988-12-07
EP0198655B1 (en) 1992-07-22

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