SG85174A1 - Optical device - Google Patents

Optical device

Info

Publication number
SG85174A1
SG85174A1 SG200002289A SG200002289A SG85174A1 SG 85174 A1 SG85174 A1 SG 85174A1 SG 200002289 A SG200002289 A SG 200002289A SG 200002289 A SG200002289 A SG 200002289A SG 85174 A1 SG85174 A1 SG 85174A1
Authority
SG
Singapore
Prior art keywords
optical device
optical
Prior art date
Application number
SG200002289A
Other languages
English (en)
Inventor
Takasuka Shoichi
Ijima Shinichi
Nakanishi Hideyuki
Yoshikawa Akio
Nakanishi Naoki
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of SG85174A1 publication Critical patent/SG85174A1/en

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
    • G11B7/135—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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1866—Transmission gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials
    • 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
    • G11B7/1356—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
    • 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
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • 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
    • G11B7/0901—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 track following only
    • G11B7/0903—Multi-beam tracking systems

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Semiconductor Lasers (AREA)
  • Light Receiving Elements (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
SG200002289A 1999-04-28 2000-04-26 Optical device SG85174A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP12270999 1999-04-28
JP2000122877A JP2001014717A (ja) 1999-04-28 2000-04-24 光学装置

Publications (1)

Publication Number Publication Date
SG85174A1 true SG85174A1 (en) 2001-12-19

Family

ID=26459785

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200002289A SG85174A1 (en) 1999-04-28 2000-04-26 Optical device

Country Status (6)

Country Link
US (3) US6501601B1 (fr)
EP (2) EP1708186A3 (fr)
JP (1) JP2001014717A (fr)
CN (1) CN1203478C (fr)
DE (1) DE60036049T2 (fr)
SG (1) SG85174A1 (fr)

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GB0010859D0 (en) * 2000-05-05 2000-06-28 Green B J Method of information emission and apparatus therefor
JP2002116314A (ja) * 2000-10-06 2002-04-19 Sankyo Seiki Mfg Co Ltd 回折素子および光ピックアップ装置
US6692830B2 (en) * 2001-07-31 2004-02-17 Flex Products, Inc. Diffractive pigment flakes and compositions
JP2003199019A (ja) * 2001-12-26 2003-07-11 Sony Corp 撮像装置および方法、記録媒体、並びにプログラム
US7136344B2 (en) * 2003-04-25 2006-11-14 Nec Corporation Optical head device and optical information recording/reproducing apparatus
DE10322238B4 (de) * 2003-05-17 2007-10-31 Carl Zeiss Smt Ag Diffraktives optisches Element sowie Projektionsobjektiv mit einem solchen Element
JP4245995B2 (ja) * 2003-07-02 2009-04-02 株式会社リコー 光ピックアップ及びこれを用いる光情報処理装置
JP4015116B2 (ja) 2004-01-08 2007-11-28 シャープ株式会社 光集積ユニット、光ピックアップ装置および光ディスク装置
KR100906475B1 (ko) * 2004-01-13 2009-07-08 삼성전자주식회사 마이크로 광학벤치 구조물 및 그 제조방법
JP2005322849A (ja) * 2004-05-11 2005-11-17 Nec Compound Semiconductor Devices Ltd 半導体レーザおよびその製造方法
JP3836483B2 (ja) * 2004-08-25 2006-10-25 シャープ株式会社 光集積ユニットおよびそれを備えた光ピックアップ装置
US20060066948A1 (en) * 2004-09-24 2006-03-30 Matsushita Electric Industrial Co., Ltd. Multi-level and gray-level diffraction gratings
US20060082838A1 (en) * 2004-10-18 2006-04-20 Ming-Der Chou Carriage used in image scanning devices
CN101061538A (zh) * 2004-11-16 2007-10-24 松下电器产业株式会社 光拾取装置
US7593306B2 (en) * 2004-11-18 2009-09-22 Samsung Electronics Co., Ltd. Diffraction element and optical pick-up apparatus having the same
KR100692574B1 (ko) 2005-05-11 2007-03-13 삼성전자주식회사 회절소자 및 이를 포함하는 광픽업장치
KR100754517B1 (ko) * 2005-01-20 2007-09-03 삼성전자주식회사 회절소자 및 이를 포함하는 광픽업장치
KR100659293B1 (ko) * 2005-01-20 2006-12-20 삼성전자주식회사 회절소자 및 이를 포함하는 광픽업장치
US20080310283A1 (en) * 2005-07-13 2008-12-18 Arima Devices Corporation Method of Reading Out Information from a Multiple Layer Optical Recording Medium and Optical Readout Device
JP4180073B2 (ja) * 2005-07-28 2008-11-12 シャープ株式会社 光ピックアップ装置
AU2006249295A1 (en) 2005-12-15 2007-07-05 Jds Uniphase Corporation Security device with metameric features using diffractive pigment flakes
JP2007172793A (ja) * 2005-12-26 2007-07-05 Sony Corp 光ピックアップ装置および光ディスク装置
JP4729418B2 (ja) * 2006-03-03 2011-07-20 株式会社日立メディアエレクトロニクス 回折格子、光ピックアップ装置、光ディスク装置
JP2007273015A (ja) * 2006-03-31 2007-10-18 Matsushita Electric Ind Co Ltd 光ピックアップ装置
US20070258344A1 (en) * 2006-05-04 2007-11-08 Imation Corp. Simultaneously accessing multiple layers of optical disks
JPWO2008026506A1 (ja) * 2006-08-28 2010-01-21 パナソニック株式会社 光学ヘッドおよび光ディスク装置
KR101450934B1 (ko) * 2007-04-06 2014-10-14 아사히 가라스 가부시키가이샤 광헤드 장치
US8922783B2 (en) * 2007-04-27 2014-12-30 Bodkin Design And Engineering Llc Multiband spatial heterodyne spectrometer and associated methods
JP4951538B2 (ja) 2008-01-21 2012-06-13 株式会社日立メディアエレクトロニクス 光ピックアップ装置および光ディスク装置
US8279525B2 (en) * 2008-05-21 2012-10-02 Lumella, Inc. Three-dimensional diffractive structure, method for making, and applications thereof
KR102444288B1 (ko) 2017-11-08 2022-09-16 삼성전자주식회사 메타 렌즈를 포함하는 프로젝터
CN110098559A (zh) * 2018-01-29 2019-08-06 山东华光光电子股份有限公司 一种半导体激光器壳内准直的装置及方法
CN114335207B (zh) * 2021-12-31 2023-11-24 中山大学 一种基于双层亚波长光栅的锗硅光电探测器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235583A (en) * 1991-08-01 1993-08-10 U.S. Philips Corporation Optical scanning for record carriers adapted for reading with differing wavelengths
EP0582059A2 (fr) * 1992-06-02 1994-02-09 Nec Corporation Montage de tête magnéto-optique
EP0726568A2 (fr) * 1995-02-07 1996-08-14 Fujitsu Limited Elément optique utilisé pour une unité de stockage optique et dispositif optique avec cet élément optique
US5662744A (en) * 1996-06-05 1997-09-02 Maytag Corporation Wash arm for dishwasher
WO1998019303A1 (fr) * 1996-10-31 1998-05-07 Sanyo Electric Co., Ltd. Dispositif de lecture optique
JPH10255309A (ja) * 1997-03-07 1998-09-25 Sanyo Electric Co Ltd 光ピックアップ装置
US5815293A (en) * 1993-02-01 1998-09-29 Matsushita Electric Industrial Co., Ltd. Compound objective lens having two focal points

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JP3658928B2 (ja) 1997-07-09 2005-06-15 旭硝子株式会社 光ヘッド装置
JPH11110781A (ja) 1997-10-01 1999-04-23 Matsushita Electron Corp 半導体レーザ装置
CN1130708C (zh) 1997-10-01 2003-12-10 松下电器产业株式会社 半导体激光装置
JPH11110782A (ja) 1997-10-01 1999-04-23 Matsushita Electron Corp 半導体レーザ装置
JPH11167012A (ja) * 1997-12-03 1999-06-22 Fuji Photo Optical Co Ltd 回折型フィルタ
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Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235583A (en) * 1991-08-01 1993-08-10 U.S. Philips Corporation Optical scanning for record carriers adapted for reading with differing wavelengths
EP0582059A2 (fr) * 1992-06-02 1994-02-09 Nec Corporation Montage de tête magnéto-optique
US5815293A (en) * 1993-02-01 1998-09-29 Matsushita Electric Industrial Co., Ltd. Compound objective lens having two focal points
EP0726568A2 (fr) * 1995-02-07 1996-08-14 Fujitsu Limited Elément optique utilisé pour une unité de stockage optique et dispositif optique avec cet élément optique
US5662744A (en) * 1996-06-05 1997-09-02 Maytag Corporation Wash arm for dishwasher
WO1998019303A1 (fr) * 1996-10-31 1998-05-07 Sanyo Electric Co., Ltd. Dispositif de lecture optique
EP0936604A1 (fr) * 1996-10-31 1999-08-18 SANYO ELECTRIC Co., Ltd. Dispositif de lecture optique
JPH10255309A (ja) * 1997-03-07 1998-09-25 Sanyo Electric Co Ltd 光ピックアップ装置

Also Published As

Publication number Publication date
US20030016448A1 (en) 2003-01-23
EP1049085B1 (fr) 2007-08-22
EP1049085A3 (fr) 2000-12-06
CN1271933A (zh) 2000-11-01
DE60036049D1 (de) 2007-10-04
US6728035B2 (en) 2004-04-27
DE60036049T2 (de) 2007-12-06
CN1203478C (zh) 2005-05-25
EP1049085A2 (fr) 2000-11-02
US6501601B1 (en) 2002-12-31
EP1708186A2 (fr) 2006-10-04
EP1708186A3 (fr) 2006-10-18
US20030053211A1 (en) 2003-03-20
JP2001014717A (ja) 2001-01-19

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