DE69116605D1 - Optischer Abtastkopf - Google Patents
Optischer AbtastkopfInfo
- Publication number
- DE69116605D1 DE69116605D1 DE69116605T DE69116605T DE69116605D1 DE 69116605 D1 DE69116605 D1 DE 69116605D1 DE 69116605 T DE69116605 T DE 69116605T DE 69116605 T DE69116605 T DE 69116605T DE 69116605 D1 DE69116605 D1 DE 69116605D1
- Authority
- DE
- Germany
- Prior art keywords
- optical scanning
- scanning head
- head
- optical
- scanning
- 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 - Lifetime
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
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/127—Lasers; Multiple laser arrays
-
- 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
- G11B7/13—Optical detectors therefor
- G11B7/131—Arrangement of detectors in a multiple array
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2147805A JP2684822B2 (ja) | 1990-06-06 | 1990-06-06 | 光ピックアップヘッド装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69116605D1 true DE69116605D1 (de) | 1996-03-07 |
DE69116605T2 DE69116605T2 (de) | 1996-06-05 |
Family
ID=15438615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69116605T Expired - Lifetime DE69116605T2 (de) | 1990-06-06 | 1991-03-26 | Optischer Abtastkopf |
Country Status (4)
Country | Link |
---|---|
US (1) | US5293367A (de) |
EP (1) | EP0460368B1 (de) |
JP (1) | JP2684822B2 (de) |
DE (1) | DE69116605T2 (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69128808T2 (de) * | 1990-04-12 | 1998-07-23 | Matsushita Electric Ind Co Ltd | Optischer Kopf mit hologrammverbundener Objektivlinse |
CA2088701C (en) * | 1992-02-05 | 1998-01-27 | Yoshio Yoshida | Optical information reproducing apparatus |
KR950005033B1 (ko) * | 1992-11-06 | 1995-05-17 | 주식회사금성사 | 광픽업 장치 |
US5581523A (en) * | 1992-11-17 | 1996-12-03 | Seiko Epson Corporation | Laser emission unit, optical head and optical memory device |
KR940020325A (ko) * | 1993-02-08 | 1994-09-15 | 이헌조 | 광픽업장치 |
JP2605600B2 (ja) * | 1993-10-18 | 1997-04-30 | 日本電気株式会社 | 光ヘッド |
JP3047314B2 (ja) * | 1995-01-12 | 2000-05-29 | 株式会社リコー | 光ヘッド |
US5646928A (en) * | 1995-06-22 | 1997-07-08 | The Regents Of The University Of California | Free-space integrated micro-pickup head for optical data storage and a micro-optical bench |
JP3372413B2 (ja) * | 1995-12-04 | 2003-02-04 | シャープ株式会社 | 光ピックアップ装置及び光記録再生装置 |
US5737296A (en) * | 1996-01-23 | 1998-04-07 | Matsushita Electric Industrial Co., Ltd. | Focus and tracking error detection by using plus and minus first order diffracted light |
US7029726B1 (en) | 1999-07-27 | 2006-04-18 | Quantum Corporation | Method for forming a servo pattern on a magnetic tape |
US7153366B1 (en) | 1998-03-24 | 2006-12-26 | Quantum Corporation | Systems and method for forming a servo pattern on a magnetic tape |
US6940676B1 (en) | 2000-06-07 | 2005-09-06 | Quantum Corporation | Triple push-pull optical tracking system |
TW564408B (en) * | 2001-11-09 | 2003-12-01 | Ritek Corp | Method and structure to increase the track-following signal of optical disk |
EP1505582A4 (de) * | 2002-05-15 | 2007-09-19 | Matsushita Electric Ind Co Ltd | Optischer kopf |
US6980390B2 (en) * | 2003-02-05 | 2005-12-27 | Quantum Corporation | Magnetic media with embedded optical servo tracks |
US7187515B2 (en) * | 2003-02-05 | 2007-03-06 | Quantum Corporation | Method and system for tracking magnetic media with embedded optical servo tracks |
KR20050006887A (ko) * | 2003-07-10 | 2005-01-17 | 삼성전자주식회사 | 포커스 오프셋을 저감할 수 있는 광픽업 및 이를 채용한광 기록 및/또는 재생기기 |
JP4205084B2 (ja) | 2005-08-26 | 2009-01-07 | シャープ株式会社 | 光ピックアップ |
JP2012053929A (ja) * | 2010-08-31 | 2012-03-15 | Hitachi Media Electoronics Co Ltd | 光ピックアップ |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7907216A (nl) * | 1979-09-28 | 1981-03-31 | Philips Nv | Optisch fokusfout-detektiestelsel. |
NL8502835A (nl) * | 1985-10-17 | 1987-05-18 | Philips Nv | Inrichting voor het met optische straling aftasten van een informatievlak. |
EP0228620B1 (de) * | 1985-12-10 | 1991-06-05 | Nec Corporation | Optischer Kopf mit einem Beugungsgitter zum Richten von zwei oder mehreren gebeugten Lichtstrahlen auf optische Detektoren |
US4731772A (en) * | 1986-05-06 | 1988-03-15 | Lee Wai Hon | Optical head using hologram lens for both beam splitting and focus error detection functions |
JPS63225930A (ja) * | 1987-03-16 | 1988-09-20 | Mitsubishi Electric Corp | 光学式情報再生装置 |
JPS63263636A (ja) * | 1987-04-22 | 1988-10-31 | Matsushita Electric Ind Co Ltd | 光学的情報再生装置 |
JPS6455745A (en) * | 1987-08-26 | 1989-03-02 | Sharp Kk | Optical pickup device |
US4929823A (en) * | 1987-10-05 | 1990-05-29 | Matsushita Electric Industrial Co., Ltd. | Optical pickup head with holographic servo signal detection using a spot size detection system |
EP0318912B1 (de) * | 1987-11-30 | 1994-02-02 | Nec Corporation | Optischer Kopf |
US4983017A (en) * | 1988-08-02 | 1991-01-08 | Sharp Kabushiki Kaisha | Optical head device for reading information stored in a recording medium |
JPH0758559B2 (ja) * | 1988-09-02 | 1995-06-21 | シャープ株式会社 | 光ピックアップ装置 |
-
1990
- 1990-06-06 JP JP2147805A patent/JP2684822B2/ja not_active Expired - Lifetime
-
1991
- 1991-03-14 US US07/669,548 patent/US5293367A/en not_active Expired - Lifetime
- 1991-03-26 EP EP91104801A patent/EP0460368B1/de not_active Expired - Lifetime
- 1991-03-26 DE DE69116605T patent/DE69116605T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0460368B1 (de) | 1996-01-24 |
JPH0440634A (ja) | 1992-02-12 |
DE69116605T2 (de) | 1996-06-05 |
JP2684822B2 (ja) | 1997-12-03 |
US5293367A (en) | 1994-03-08 |
EP0460368A3 (en) | 1992-02-05 |
EP0460368A2 (de) | 1991-12-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: PANASONIC CORP., KADOMA, OSAKA, JP |