DE69701905D1 - Photodetektor für optischen Kopf - Google Patents
Photodetektor für optischen KopfInfo
- Publication number
- DE69701905D1 DE69701905D1 DE69701905T DE69701905T DE69701905D1 DE 69701905 D1 DE69701905 D1 DE 69701905D1 DE 69701905 T DE69701905 T DE 69701905T DE 69701905 T DE69701905 T DE 69701905T DE 69701905 D1 DE69701905 D1 DE 69701905D1
- Authority
- DE
- Germany
- Prior art keywords
- optical head
- photodetector
- head photodetector
- 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 - 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
- G11B7/13—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
- G11B7/13—Optical detectors therefor
- G11B7/133—Shape of individual detector 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
- G11B7/1353—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
- 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
-
- 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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
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 |
---|---|---|---|
JP8027590A JPH09219036A (ja) | 1996-02-15 | 1996-02-15 | 光ヘッド装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69701905D1 true DE69701905D1 (de) | 2000-06-15 |
DE69701905T2 DE69701905T2 (de) | 2000-11-16 |
Family
ID=12225174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69701905T Expired - Lifetime DE69701905T2 (de) | 1996-02-15 | 1997-02-14 | Photodetektor für optischen Kopf |
Country Status (4)
Country | Link |
---|---|
US (1) | US5872759A (de) |
EP (1) | EP0790607B1 (de) |
JP (1) | JPH09219036A (de) |
DE (1) | DE69701905T2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100255243B1 (ko) * | 1997-11-19 | 2000-05-01 | 윤종용 | 광기록매체들에 호환가능한 광픽업 |
US20050068864A1 (en) * | 1999-07-08 | 2005-03-31 | Samsung Electronics Co., Ltd. | Method and apparatus for tracking error detection in optical disk driver |
WO2001041271A1 (fr) * | 1999-11-30 | 2001-06-07 | Matsushita Electric Industrial Co., Ltd. | Dispositif laser a semi-conducteurs, procede de production de ce dernier et dispositif a disque optique |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60138748A (ja) * | 1983-12-27 | 1985-07-23 | Toshiba Corp | 光学式情報再生装置 |
DE3679648D1 (de) * | 1985-12-10 | 1991-07-11 | Nec Corp | Optischer kopf mit einem beugungsgitter zum richten von zwei oder mehreren gebeugten lichtstrahlen auf optische detektoren. |
JPS6435730A (en) * | 1987-07-31 | 1989-02-06 | Sony Corp | Focussing error detector |
JPH01311428A (ja) * | 1988-06-09 | 1989-12-15 | Matsushita Electric Ind Co Ltd | 光ヘッド装置及びこれを用いた光情報装置 |
DE3913229A1 (de) * | 1988-09-19 | 1990-03-22 | Pioneer Electronic Corp | Wiedergabegeraet fuer optische informationen |
JP2761791B2 (ja) * | 1990-05-08 | 1998-06-04 | 株式会社コパル | 光記録装置 |
JP2551302B2 (ja) * | 1991-09-18 | 1996-11-06 | 日本電気株式会社 | 光学式記録再生装置とその製造方法 |
JP2559006B2 (ja) * | 1993-01-13 | 1996-11-27 | 松下電器産業株式会社 | 光ヘッド |
JP2532818B2 (ja) * | 1993-02-01 | 1996-09-11 | 松下電器産業株式会社 | 対物レンズおよび光ヘッド装置 |
JP3309470B2 (ja) * | 1993-03-10 | 2002-07-29 | 松下電器産業株式会社 | 光情報記録再生装置 |
US5511059A (en) * | 1994-06-14 | 1996-04-23 | Eastman Kodak Company | Multi-element grating beam splitter with a reflection grating element for use in front facet substraction |
JPH08248307A (ja) * | 1995-03-10 | 1996-09-27 | Sony Corp | 対物レンズ、光ヘッド装置及び光ディスク再生装置 |
KR100200858B1 (ko) * | 1995-10-04 | 1999-06-15 | 윤종용 | 광픽업장치 |
US5659533A (en) * | 1996-07-23 | 1997-08-19 | Sampo Corporation | Method of using a single pick-up head to read and store data on discs of different thicknesses and structure of a pick-up head apparatus therefor |
-
1996
- 1996-02-15 JP JP8027590A patent/JPH09219036A/ja active Pending
-
1997
- 1997-02-14 DE DE69701905T patent/DE69701905T2/de not_active Expired - Lifetime
- 1997-02-14 EP EP97102451A patent/EP0790607B1/de not_active Expired - Lifetime
- 1997-02-14 US US08/800,855 patent/US5872759A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69701905T2 (de) | 2000-11-16 |
EP0790607B1 (de) | 2000-05-10 |
US5872759A (en) | 1999-02-16 |
JPH09219036A (ja) | 1997-08-19 |
EP0790607A1 (de) | 1997-08-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |