DE3880702D1 - Optischer lesekopf. - Google Patents

Optischer lesekopf.

Info

Publication number
DE3880702D1
DE3880702D1 DE8888101627T DE3880702T DE3880702D1 DE 3880702 D1 DE3880702 D1 DE 3880702D1 DE 8888101627 T DE8888101627 T DE 8888101627T DE 3880702 T DE3880702 T DE 3880702T DE 3880702 D1 DE3880702 D1 DE 3880702D1
Authority
DE
Germany
Prior art keywords
reading head
optical reading
optical
head
reading
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE8888101627T
Other languages
English (en)
Other versions
DE3880702T2 (de
Inventor
Hidehiro C O Sony Corpora Kume
Yoshiyuki C O Sony C Matsumoto
You C O Sony Corpor Yoshitoshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=12179658&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3880702(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE3880702D1 publication Critical patent/DE3880702D1/de
Publication of DE3880702T2 publication Critical patent/DE3880702T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G11B7/1365—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
    • G11B7/12—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
    • G11B7/08—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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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
    • G11B7/08—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
    • G11B7/0912—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 push-pull method

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
DE88101627T 1987-02-06 1988-02-04 Optischer lesekopf. Expired - Fee Related DE3880702T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62025936A JP2508478B2 (ja) 1987-02-06 1987-02-06 光学ヘツド

Publications (2)

Publication Number Publication Date
DE3880702D1 true DE3880702D1 (de) 1993-06-09
DE3880702T2 DE3880702T2 (de) 1993-11-04

Family

ID=12179658

Family Applications (1)

Application Number Title Priority Date Filing Date
DE88101627T Expired - Fee Related DE3880702T2 (de) 1987-02-06 1988-02-04 Optischer lesekopf.

Country Status (5)

Country Link
US (1) US4873429A (de)
EP (1) EP0278406B1 (de)
JP (1) JP2508478B2 (de)
KR (1) KR960007232B1 (de)
DE (1) DE3880702T2 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6657931B1 (en) 1959-02-02 2003-12-02 Sony Corporation Optical disc drive for performing read/write operations on optical disks
DE3887762T2 (de) * 1987-03-17 1994-09-08 Matsushita Electric Ind Co Ltd Optischer Kopf.
US5016992A (en) * 1989-03-16 1991-05-21 Forschungszentrum Julich Gmbh Method of and apparatus for the reading of magnetically stored information
US5966230A (en) * 1990-05-29 1999-10-12 Symbol Technologies, Inc. Integrated scanner on a common substrate
JP2565447Y2 (ja) * 1991-02-16 1998-03-18 日本特殊陶業株式会社 エンジン用圧力センサー
US5357122A (en) * 1991-09-05 1994-10-18 Sony Corporation Three-dimensional optical-electronic integrated circuit device with raised sections
US5191204A (en) * 1991-10-28 1993-03-02 International Business Machines Corporation Multi-beam optical system and method with power detection of overlapping beams
US5350917A (en) * 1991-12-27 1994-09-27 Sony Corporation Opto-magnetic recording polarization optical apparatus including a laser diode and a light absorbing film
US5319182A (en) * 1992-03-04 1994-06-07 Welch Allyn, Inc. Integrated solid state light emitting and detecting array and apparatus employing said array
US5410468A (en) * 1992-06-26 1995-04-25 Matsushita Electric Industrial Co., Ltd. Optical pick-up apparatus
EP0581519B1 (de) * 1992-07-30 1998-05-27 Matsushita Electric Industrial Co., Ltd. Optisches Wiedergabegerät
US5852287A (en) * 1993-08-17 1998-12-22 Sony Corporation Semiconductor optical device for code reader
US5883913A (en) * 1993-12-27 1999-03-16 Sony Corporation Optical device
US5874722A (en) 1994-07-19 1999-02-23 Spectra-Physics Scanning Systems, Inc. Compact scanner module mountable to pointing instrument
JP3438365B2 (ja) * 1994-11-29 2003-08-18 ソニー株式会社 複合光学装置およびその製造方法
US5796701A (en) * 1995-06-23 1998-08-18 Sony Corporation Optical pickup and opto-magnetic signal reproducing apparatus
KR0174473B1 (ko) * 1996-04-26 1999-04-15 배순훈 광 픽-업 장치
JPH09320098A (ja) * 1996-05-27 1997-12-12 Sony Corp 光ピックアップ装置および複合光学装置
TW365057B (en) * 1997-12-31 1999-07-21 Ind Tech Res Inst Manufacturing method for micro-mirror on the silicon substrate
DE102017101655B4 (de) 2017-01-27 2024-01-25 Bcs Automotive Interface Solutions Gmbh Elektrooptikbaugruppe sowie Verfahren zur Detektion von Umgebungslicht

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1258906A (en) * 1985-04-22 1989-08-29 Hiroshi Oinoue Semiconductor laser apparatus for optical head
EP0210582B1 (de) * 1985-07-29 1991-02-27 Mitsubishi Denki Kabushiki Kaisha Optische Kopfvorrichtung
JPH0719394B2 (ja) * 1986-04-23 1995-03-06 ソニー株式会社 半導体レ−ザ装置

Also Published As

Publication number Publication date
KR880010388A (ko) 1988-10-08
JP2508478B2 (ja) 1996-06-19
JPS63193337A (ja) 1988-08-10
EP0278406B1 (de) 1993-05-05
KR960007232B1 (ko) 1996-05-29
EP0278406A3 (en) 1990-09-12
US4873429A (en) 1989-10-10
EP0278406A2 (de) 1988-08-17
DE3880702T2 (de) 1993-11-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee