JPH057690B2 - - Google Patents

Info

Publication number
JPH057690B2
JPH057690B2 JP59083837A JP8383784A JPH057690B2 JP H057690 B2 JPH057690 B2 JP H057690B2 JP 59083837 A JP59083837 A JP 59083837A JP 8383784 A JP8383784 A JP 8383784A JP H057690 B2 JPH057690 B2 JP H057690B2
Authority
JP
Japan
Prior art keywords
spot
recording
lens
erasing
recording medium
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
JP59083837A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60229007A (ja
Inventor
Toshiaki Kashihara
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.)
Panasonic Holdings Corp
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
Priority to JP59083837A priority Critical patent/JPS60229007A/ja
Publication of JPS60229007A publication Critical patent/JPS60229007A/ja
Publication of JPH057690B2 publication Critical patent/JPH057690B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0911—Anamorphotic systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0955—Lenses
    • G02B27/0966—Cylindrical lenses
    • 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
    • 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
    • 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
    • G11B7/1398—Means for shaping the cross-section of the beam, e.g. into circular or elliptical cross-section

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)
JP59083837A 1984-04-27 1984-04-27 非等方的光スポツト形成方法 Granted JPS60229007A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59083837A JPS60229007A (ja) 1984-04-27 1984-04-27 非等方的光スポツト形成方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59083837A JPS60229007A (ja) 1984-04-27 1984-04-27 非等方的光スポツト形成方法

Publications (2)

Publication Number Publication Date
JPS60229007A JPS60229007A (ja) 1985-11-14
JPH057690B2 true JPH057690B2 (enrdf_load_stackoverflow) 1993-01-29

Family

ID=13813813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59083837A Granted JPS60229007A (ja) 1984-04-27 1984-04-27 非等方的光スポツト形成方法

Country Status (1)

Country Link
JP (1) JPS60229007A (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2933325B2 (ja) * 1989-08-29 1999-08-09 旭光学工業株式会社 光学式情報記録再生装置用光学系の波面収差測定装置
KR100200840B1 (ko) * 1995-02-25 1999-06-15 윤종용 속응답 광변조장치
JP4843844B2 (ja) 1999-12-27 2011-12-21 ソニー株式会社 光ヘッド、受発光素子、及び光記録媒体記録再生装置
US10338354B2 (en) 2016-07-18 2019-07-02 Coherent, Inc. Achromatic anastigmatic anamorphic objective
US10663700B2 (en) 2018-01-30 2020-05-26 Coherent, Inc. Achromatic astigmatic anamorphic objective
CN109358428A (zh) * 2018-11-15 2019-02-19 合肥富煌君达高科信息技术有限公司 一种具备调节功能的新型激光二极管光路整形机构
CN109581671A (zh) * 2018-11-15 2019-04-05 合肥富煌君达高科信息技术有限公司 一种新型激光二极管整形光路设计
CN117891082B (zh) * 2024-03-14 2024-06-21 武汉振光科技有限公司 一种远距离激光整形探测照明装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58132716A (ja) * 1982-02-02 1983-08-08 Matsushita Electric Ind Co Ltd 光ビ−ム径変換装置
CA1208466A (en) * 1982-07-28 1986-07-29 Donald R. Scifres Beam collimation and focusing of multi-emitter or broad emitter lasers
JPS5958414A (ja) * 1982-09-29 1984-04-04 Fujitsu Ltd 半導体レ−ザ光学系

Also Published As

Publication number Publication date
JPS60229007A (ja) 1985-11-14

Similar Documents

Publication Publication Date Title
US4710911A (en) Method for recording, reproducing and erasing optical information
JPH0777025B2 (ja) 光学的記録再生装置
JPH057690B2 (enrdf_load_stackoverflow)
JPH03224790A (ja) 情報記録媒体
JPS63132090A (ja) 光学記録要素上での書込−消去方法
JP2004171636A (ja) 光ディスク装置
JP2726259B2 (ja) 情報記録方法
JPS5971140A (ja) 光学的記録再生装置
JPS6120236A (ja) 可逆光デイスクの初期化方式
JPS60106031A (ja) 光記録媒体の前処理装置
JP3159374B2 (ja) 光学的情報記録媒体
JP2537875B2 (ja) 情報記録方法
JPH01171133A (ja) 情報記録方法
JPH0338656B2 (enrdf_load_stackoverflow)
JPH02249148A (ja) 光学情報記録消去装置
JP2000011450A (ja) 光学的情報記録媒体
JP2000357339A (ja) 近接場光発生装置
JPH04209317A (ja) 情報記録媒体の初期化方法
JPH03181029A (ja) 情報担体ディスク
JPH04271019A (ja) 相変化型光ディスクの初期化装置
JPS61133039A (ja) 光記録再生方式
JP2003323738A (ja) 光記録再生装置
JPH05342623A (ja) 光学的情報記録装置および光学的情報記録媒体
JPH0414424B2 (enrdf_load_stackoverflow)
JPS60193139A (ja) 光記録媒体の製造方法

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees