DE19640837B4 - Optische Aufzeichnungs- und Wiedergabevorrichtung - Google Patents
Optische Aufzeichnungs- und Wiedergabevorrichtung Download PDFInfo
- Publication number
- DE19640837B4 DE19640837B4 DE19640837A DE19640837A DE19640837B4 DE 19640837 B4 DE19640837 B4 DE 19640837B4 DE 19640837 A DE19640837 A DE 19640837A DE 19640837 A DE19640837 A DE 19640837A DE 19640837 B4 DE19640837 B4 DE 19640837B4
- Authority
- DE
- Germany
- Prior art keywords
- light
- axis
- photodetector
- plate
- recording
- 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
Images
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
- G11B7/1381—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
- G11B7/28—Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers
-
- 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
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
- G11B7/0909—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by astigmatic methods
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
- Glass Compositions (AREA)
- Holo Graphy (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR95-33913 | 1995-10-04 | ||
KR1019950033913A KR100200858B1 (ko) | 1995-10-04 | 1995-10-04 | 광픽업장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19640837A1 DE19640837A1 (de) | 1997-04-10 |
DE19640837B4 true DE19640837B4 (de) | 2011-01-27 |
Family
ID=19429197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19640837A Expired - Lifetime DE19640837B4 (de) | 1995-10-04 | 1996-10-02 | Optische Aufzeichnungs- und Wiedergabevorrichtung |
Country Status (7)
Country | Link |
---|---|
JP (1) | JP3872145B2 (ko) |
KR (1) | KR100200858B1 (ko) |
DE (1) | DE19640837B4 (ko) |
FR (1) | FR2739717B1 (ko) |
GB (1) | GB2306045B (ko) |
IT (1) | IT1285223B1 (ko) |
NL (1) | NL1004079C2 (ko) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09219036A (ja) * | 1996-02-15 | 1997-08-19 | Nec Corp | 光ヘッド装置 |
WO2000039791A1 (en) * | 1998-12-29 | 2000-07-06 | Koninklijke Philips Electronics N.V. | Optical scanning device for two types of record carriers |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5281797A (en) * | 1991-12-26 | 1994-01-25 | Hitachi, Ltd. | Short wavelength optical disk head having a changeable aperture |
EP0610055A2 (en) * | 1993-02-01 | 1994-08-10 | Matsushita Electric Industrial Co., Ltd. | Compound objective lens having two focal points and apparatus using the lens |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60185230A (ja) * | 1984-03-02 | 1985-09-20 | Pioneer Electronic Corp | 焦点誤差検出装置 |
US5349592A (en) * | 1992-02-27 | 1994-09-20 | Kabushiki Kaisha Toshiba | Super-resolution optical element for use in image forming apparatus |
JPH06295467A (ja) * | 1993-04-01 | 1994-10-21 | Nippon Columbia Co Ltd | 光ピックアップ装置 |
JP3548259B2 (ja) * | 1994-04-07 | 2004-07-28 | ペンタックス株式会社 | 光磁気ヘッド装置 |
KR100392857B1 (ko) * | 1995-03-15 | 2003-12-31 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 기록 매체를 광학적으로 주사하기 위한 장치 |
HU224675B1 (hu) * | 1995-08-30 | 2005-12-28 | Samsung Electronics Co. Ltd. | Memória diszk letapogató optikai eszköz |
-
1995
- 1995-10-04 KR KR1019950033913A patent/KR100200858B1/ko not_active IP Right Cessation
-
1996
- 1996-09-20 NL NL1004079A patent/NL1004079C2/nl not_active IP Right Cessation
- 1996-09-27 IT IT96MI001992A patent/IT1285223B1/it active IP Right Grant
- 1996-10-02 FR FR9611994A patent/FR2739717B1/fr not_active Expired - Lifetime
- 1996-10-02 DE DE19640837A patent/DE19640837B4/de not_active Expired - Lifetime
- 1996-10-04 JP JP26433996A patent/JP3872145B2/ja not_active Expired - Lifetime
- 1996-10-04 GB GB9620677A patent/GB2306045B/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5281797A (en) * | 1991-12-26 | 1994-01-25 | Hitachi, Ltd. | Short wavelength optical disk head having a changeable aperture |
EP0610055A2 (en) * | 1993-02-01 | 1994-08-10 | Matsushita Electric Industrial Co., Ltd. | Compound objective lens having two focal points and apparatus using the lens |
JPH0798431A (ja) * | 1993-02-01 | 1995-04-11 | Matsushita Electric Ind Co Ltd | 対物レンズ及び集光光学系及び光ヘッド装置及び光ディスク装置及び光ディスク及び顕微鏡及び露光装置 |
Also Published As
Publication number | Publication date |
---|---|
KR100200858B1 (ko) | 1999-06-15 |
GB9620677D0 (en) | 1996-11-20 |
DE19640837A1 (de) | 1997-04-10 |
JP3872145B2 (ja) | 2007-01-24 |
JPH09120572A (ja) | 1997-05-06 |
ITMI961992A1 (it) | 1998-03-27 |
GB2306045A (en) | 1997-04-23 |
NL1004079C2 (nl) | 1998-01-07 |
NL1004079A1 (nl) | 1997-04-08 |
FR2739717B1 (fr) | 1999-01-08 |
FR2739717A1 (fr) | 1997-04-11 |
KR970023055A (ko) | 1997-05-30 |
GB2306045B (en) | 1999-08-04 |
IT1285223B1 (it) | 1998-06-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
R020 | Patent grant now final |
Effective date: 20110427 |
|
R082 | Change of representative |
Representative=s name: KOTITSCHKE & HEURUNG PARTNERSCHAFT MBB, DE Representative=s name: KOTITSCHKE & HEURUNG PARTNERSCHAFT MBB PATENT-, DE |
|
R071 | Expiry of right |