DE69804993T2 - Optisches gerät - Google Patents

Optisches gerät

Info

Publication number
DE69804993T2
DE69804993T2 DE69804993T DE69804993T DE69804993T2 DE 69804993 T2 DE69804993 T2 DE 69804993T2 DE 69804993 T DE69804993 T DE 69804993T DE 69804993 T DE69804993 T DE 69804993T DE 69804993 T2 DE69804993 T2 DE 69804993T2
Authority
DE
Germany
Prior art keywords
optical device
optical
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
DE69804993T
Other languages
English (en)
Other versions
DE69804993D1 (de
Inventor
Nobuyuki Hashimoto
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Publication of DE69804993D1 publication Critical patent/DE69804993D1/de
Application granted granted Critical
Publication of DE69804993T2 publication Critical patent/DE69804993T2/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
    • G11B7/1369—Active plates, e.g. liquid crystal panels or electrostrictive elements
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
DE69804993T 1997-09-10 1998-09-10 Optisches gerät Expired - Fee Related DE69804993T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP24527497 1997-09-10
JP24854797 1997-09-12
PCT/JP1998/004089 WO1999013464A1 (fr) 1997-09-10 1998-09-10 Dispositif optique

Publications (2)

Publication Number Publication Date
DE69804993D1 DE69804993D1 (de) 2002-05-23
DE69804993T2 true DE69804993T2 (de) 2002-10-31

Family

ID=26537142

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69804993T Expired - Fee Related DE69804993T2 (de) 1997-09-10 1998-09-10 Optisches gerät

Country Status (7)

Country Link
US (1) US6437319B1 (de)
EP (1) EP1028419B1 (de)
JP (1) JP3830537B2 (de)
KR (1) KR100336682B1 (de)
AU (1) AU9002098A (de)
DE (1) DE69804993T2 (de)
WO (1) WO1999013464A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013218231A1 (de) * 2013-09-11 2015-03-12 Sirona Dental Systems Gmbh Optisches System zur Erzeugung eines sich zeitlich ändernden Musters für ein Konfokalmikroskop
CN112803994B (zh) * 2021-02-03 2022-04-19 中航海信光电技术有限公司 一种用于光模块的光回波容限测试装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69330735T2 (de) * 1992-07-30 2002-07-04 Hamamatsu Photonics Kk Optisch adressierter räumlicher Lichtmodulator
JP3048768B2 (ja) * 1992-10-08 2000-06-05 三洋電機株式会社 光学ヘッド
CA2164384C (en) 1995-03-04 1999-08-17 Jin-Yong Kim Optical pick-up apparatus capable of reading data irrespective of disc type
JP3071141B2 (ja) * 1995-06-12 2000-07-31 三洋電機株式会社 光記録又は光再生装置
JP3476989B2 (ja) * 1995-08-04 2003-12-10 パイオニア株式会社 光ピックアップ
US5787061A (en) * 1995-08-31 1998-07-28 Sanyo Electric Co., Ltd. Optical disc recording reproducing apparatus recording/reproducing information to/from optical discs according to different standards
KR100206771B1 (ko) * 1995-12-29 1999-07-01 구자홍 광픽업장치
JP3062099B2 (ja) * 1996-02-06 2000-07-10 日本電気株式会社 光ヘッド装置
US5745465A (en) 1997-01-23 1998-04-28 Industrial Technology Research Institute Digital video disc pick-up head system

Also Published As

Publication number Publication date
EP1028419B1 (de) 2002-04-17
DE69804993D1 (de) 2002-05-23
EP1028419A1 (de) 2000-08-16
WO1999013464A1 (fr) 1999-03-18
KR100336682B1 (ko) 2002-05-13
JP3830537B2 (ja) 2006-10-04
AU9002098A (en) 1999-03-29
KR20000076377A (ko) 2000-12-26
US6437319B1 (en) 2002-08-20
EP1028419A4 (de) 2000-10-18

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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