DE69528108T2 - System für optischen Kopf - Google Patents
System für optischen KopfInfo
- Publication number
- DE69528108T2 DE69528108T2 DE69528108T DE69528108T DE69528108T2 DE 69528108 T2 DE69528108 T2 DE 69528108T2 DE 69528108 T DE69528108 T DE 69528108T DE 69528108 T DE69528108 T DE 69528108T DE 69528108 T2 DE69528108 T2 DE 69528108T2
- Authority
- DE
- Germany
- Prior art keywords
- optical head
- head system
- optical
- head
- 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
Links
- 230000003287 optical effect Effects 0.000 title 1
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
- 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
-
- 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
- G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
- G11B7/1367—Stepped phase 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6102409A JP2655077B2 (ja) | 1994-05-17 | 1994-05-17 | 光ヘッド装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69528108D1 DE69528108D1 (de) | 2002-10-17 |
DE69528108T2 true DE69528108T2 (de) | 2003-06-05 |
Family
ID=14326649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69528108T Expired - Fee Related DE69528108T2 (de) | 1994-05-17 | 1995-05-17 | System für optischen Kopf |
Country Status (4)
Country | Link |
---|---|
US (1) | US5600614A (de) |
EP (1) | EP0683484B1 (de) |
JP (1) | JP2655077B2 (de) |
DE (1) | DE69528108T2 (de) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0713216B1 (de) * | 1994-11-15 | 2001-10-17 | Nec Corporation | Optischer Kopf unter Verwendung der Hyperauflösungstechnik |
US5708648A (en) * | 1995-05-31 | 1998-01-13 | Nec Corporation | Optical head apparatus including light focusing and refocusing lens systems |
JP2748906B2 (ja) * | 1995-10-13 | 1998-05-13 | 日本電気株式会社 | 光学ヘッド装置 |
JPH09180240A (ja) * | 1995-12-21 | 1997-07-11 | Hitachi Ltd | 光ヘッド |
DE69726527T2 (de) * | 1996-03-18 | 2004-09-23 | Seiko Epson Corp. | Optischer kopf und optisches aufzeichnungsgerät |
JPH1055565A (ja) * | 1996-04-26 | 1998-02-24 | Daewoo Electron Co Ltd | 光ピックアップ装置 |
JP2910689B2 (ja) * | 1996-06-20 | 1999-06-23 | 日本電気株式会社 | 光ヘッド |
US6275461B1 (en) | 1996-08-29 | 2001-08-14 | Samsung Electronic Co., Ltd. | Optical pickup using an optical phase plate |
KR100263154B1 (ko) * | 1996-08-29 | 2000-09-01 | 윤종용 | 광학적 위상판을 사용한 광픽업 |
US6222812B1 (en) | 1996-08-29 | 2001-04-24 | Samsung Electronics Co., Ltd. | Optical pickup using an optical phase plate |
TW307007B (en) * | 1996-09-24 | 1997-06-01 | Ind Tech Res Inst | Digital video disc pick-up head |
JP2818405B2 (ja) * | 1996-10-18 | 1998-10-30 | 三星電子株式会社 | 波長板を具備した光ピックアップ装置 |
JPH10188322A (ja) * | 1996-12-26 | 1998-07-21 | Nec Corp | 光ヘッド |
US6639889B1 (en) | 1997-02-13 | 2003-10-28 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats |
US6304540B1 (en) | 1998-03-30 | 2001-10-16 | Samsung Electronics Co., Ltd. | Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens |
JP3554844B2 (ja) * | 1998-03-19 | 2004-08-18 | 富士通株式会社 | 光磁気ヘッド装置 |
US6721258B1 (en) | 1999-06-21 | 2004-04-13 | Citizen Watch Co., Ltd. | Optical device for super-resolution |
JP2005100476A (ja) * | 1999-11-01 | 2005-04-14 | Matsushita Electric Ind Co Ltd | 光学ヘッド |
JP4903300B2 (ja) * | 2000-07-31 | 2012-03-28 | 旭硝子株式会社 | 光学装置 |
US6404722B1 (en) * | 2000-08-01 | 2002-06-11 | Ritek Corporation | Method of increasing recording density and capacity of a compact disc |
JP2003091865A (ja) * | 2001-09-20 | 2003-03-28 | Minebea Co Ltd | 記録媒体の情報再生及び記録装置 |
JP4362068B2 (ja) * | 2002-02-26 | 2009-11-11 | パナソニック株式会社 | 光学素子及びそれを用いた光ヘッド装置、並びに、この光ヘッド装置を用いた光情報装置、並びに、この光情報装置を用いたコンピュータ、光ディスクプレーヤ、カーナビゲーションシステム、光ディスクレコーダ及び光ディスクサーバ |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0834012B2 (ja) * | 1988-06-14 | 1996-03-29 | 日本電気株式会社 | 光ヘッド装置及び情報記録再生方法 |
JP2638086B2 (ja) * | 1988-06-14 | 1997-08-06 | 日本電気株式会社 | 光ヘッド装置及び情報記録再生方法 |
DE68924303T2 (de) * | 1988-06-14 | 1996-02-29 | Nec Corp | Optische Kopfanordnung. |
US5072437A (en) * | 1988-09-19 | 1991-12-10 | Pioneer Electronic Corporation | Optical information reproducing apparatus |
JPH0572497A (ja) * | 1991-09-11 | 1993-03-26 | Sharp Corp | 一体型光素子および基板型光素子 |
JP3068340B2 (ja) * | 1991-09-30 | 2000-07-24 | 株式会社東芝 | 集光装置 |
WO1993016469A1 (en) * | 1992-02-07 | 1993-08-19 | Sony Corporation | Phase varying device, and optical pickup apparatus using the same for magneto-optical storage |
JPH05225602A (ja) * | 1992-02-14 | 1993-09-03 | Alps Electric Co Ltd | 光ヘッド装置 |
US5349592A (en) * | 1992-02-27 | 1994-09-20 | Kabushiki Kaisha Toshiba | Super-resolution optical element for use in image forming apparatus |
JP3077426B2 (ja) * | 1992-12-14 | 2000-08-14 | 日本電気株式会社 | 光情報記録再生装置 |
JPH07141681A (ja) * | 1993-11-18 | 1995-06-02 | Ricoh Co Ltd | 光ヘッド |
-
1994
- 1994-05-17 JP JP6102409A patent/JP2655077B2/ja not_active Expired - Lifetime
-
1995
- 1995-05-16 US US08/442,300 patent/US5600614A/en not_active Expired - Fee Related
- 1995-05-17 DE DE69528108T patent/DE69528108T2/de not_active Expired - Fee Related
- 1995-05-17 EP EP95107576A patent/EP0683484B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0683484B1 (de) | 2002-09-11 |
US5600614A (en) | 1997-02-04 |
EP0683484A1 (de) | 1995-11-22 |
DE69528108D1 (de) | 2002-10-17 |
JPH07311969A (ja) | 1995-11-28 |
JP2655077B2 (ja) | 1997-09-17 |
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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 |