NL1004078C2 - Optische aftastinrichting. - Google Patents
Optische aftastinrichting. Download PDFInfo
- Publication number
- NL1004078C2 NL1004078C2 NL1004078A NL1004078A NL1004078C2 NL 1004078 C2 NL1004078 C2 NL 1004078C2 NL 1004078 A NL1004078 A NL 1004078A NL 1004078 A NL1004078 A NL 1004078A NL 1004078 C2 NL1004078 C2 NL 1004078C2
- Authority
- NL
- Netherlands
- Prior art keywords
- light
- disc
- scanning device
- optical scanning
- objective lens
- Prior art date
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
- G11B7/08—Disposition or mounting of heads or light sources relatively to 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
- 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
- G11B7/08—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
-
- 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
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
- Holo Graphy (AREA)
- Glass Compositions (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950033912A KR100200857B1 (ko) | 1995-10-04 | 1995-10-04 | 광픽업장치 |
KR19950033912 | 1995-10-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
NL1004078A1 NL1004078A1 (nl) | 1997-04-08 |
NL1004078C2 true NL1004078C2 (nl) | 1998-01-07 |
Family
ID=19429195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL1004078A NL1004078C2 (nl) | 1995-10-04 | 1996-09-20 | Optische aftastinrichting. |
Country Status (8)
Country | Link |
---|---|
US (1) | US5802037A (ko) |
JP (1) | JPH09120557A (ko) |
KR (1) | KR100200857B1 (ko) |
DE (1) | DE19640838B4 (ko) |
FR (1) | FR2739716B1 (ko) |
GB (1) | GB2306070B (ko) |
IT (1) | IT1285224B1 (ko) |
NL (1) | NL1004078C2 (ko) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6259668B1 (en) * | 1996-02-14 | 2001-07-10 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses |
KR100224621B1 (ko) * | 1996-09-16 | 1999-10-15 | 윤종용 | 두께가 다른 디스크 호환을 위한 기록재생용 광픽업 |
KR100195137B1 (ko) * | 1996-10-24 | 1999-06-15 | 윤종용 | 호환형 광픽업장치 |
US6091690A (en) * | 1997-02-06 | 2000-07-18 | Matsushita Electric Industrial Co., Ltd. | Optical head device and optical information processing apparatus |
JPH10233053A (ja) * | 1997-02-20 | 1998-09-02 | Alps Electric Co Ltd | ディスク判別装置およびディスク判別方法 |
TW342493B (en) * | 1997-04-29 | 1998-10-11 | Ind Tech Res Inst | Digital video disc (DVD) optical head with dual-wavelength laser |
KR100335408B1 (ko) * | 1998-03-03 | 2002-08-21 | 삼성전자 주식회사 | 포커스옵셋조정가능한광픽업장치 |
JP3123500B2 (ja) | 1998-03-12 | 2001-01-09 | 日本電気株式会社 | 光ディスク装置 |
EP1763876B1 (en) * | 2004-06-29 | 2008-05-28 | Koninklijke Philips Electronics N.V. | Method and system for generating a spherical aberration signal error |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4695158A (en) * | 1984-03-02 | 1987-09-22 | Pioneer Electronic Corporation | Focus error detector |
WO1996028816A2 (en) * | 1995-03-15 | 1996-09-19 | Philips Electronics N.V. | Device for optically scanning a recording medium |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2724305A (en) * | 1951-09-04 | 1955-11-22 | Herman F Brandt | Apparatus for recording eye movement |
FR2266932B1 (ko) * | 1973-03-02 | 1977-09-02 | Thomson Brandt | |
FR2235448B1 (ko) * | 1973-06-29 | 1976-05-07 | Thomson Brandt | |
GB1603596A (en) * | 1977-06-06 | 1981-11-25 | Mca Disco Vision | Optical transducer and focusing system |
JPH0718761B2 (ja) * | 1980-09-19 | 1995-03-06 | 株式会社ニコン | 測光装置 |
JPS58208944A (ja) * | 1982-05-31 | 1983-12-05 | Sony Corp | 光学ヘツド制御信号発生装置 |
US4641296A (en) * | 1983-04-28 | 1987-02-03 | Nippon Kogaku K.K. | Optical head for information recording apparatus |
US4704024A (en) * | 1983-12-09 | 1987-11-03 | Canon Kabushiki Kaisha | Photometric circuit for camera |
US4737946A (en) * | 1984-09-03 | 1988-04-12 | Omron Tateisi Electronics Co. | Device for processing optical data with improved optical allignment means |
CA1258906A (en) * | 1985-04-22 | 1989-08-29 | Hiroshi Oinoue | Semiconductor laser apparatus for optical head |
JPS63215942A (ja) * | 1987-03-04 | 1988-09-08 | Natl Aerospace Lab | 粒子径分布計測用光電変換センサ− |
US4816665A (en) * | 1987-08-06 | 1989-03-28 | Maxtor Corporation | Sensor array for focus detection |
US5146258A (en) * | 1990-12-24 | 1992-09-08 | Eastman Kodak Company | Multiple photodiode array for light metering |
DE4140806A1 (de) * | 1991-12-11 | 1993-06-17 | Thomson Brandt Gmbh | Optische abtastvorrichtung |
US5281797A (en) * | 1991-12-26 | 1994-01-25 | Hitachi, Ltd. | Short wavelength optical disk head having a changeable aperture |
JPH05325245A (ja) * | 1992-05-20 | 1993-12-10 | Olympus Optical Co Ltd | 光記録媒体の情報記録/再生装置 |
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 |
US5532999A (en) * | 1993-06-25 | 1996-07-02 | Matsushita Electric Industrial Co., Ltd. | Optical detector having stray carrier absorption regions between light receiving elements, and an optical head using the same |
-
1995
- 1995-10-04 KR KR1019950033912A patent/KR100200857B1/ko not_active IP Right Cessation
-
1996
- 1996-09-06 US US08/708,988 patent/US5802037A/en not_active Expired - Lifetime
- 1996-09-20 NL NL1004078A patent/NL1004078C2/nl not_active IP Right Cessation
- 1996-09-27 IT IT96MI001993A patent/IT1285224B1/it active IP Right Grant
- 1996-10-02 DE DE19640838A patent/DE19640838B4/de not_active Expired - Fee Related
- 1996-10-02 FR FR9611993A patent/FR2739716B1/fr not_active Expired - Fee Related
- 1996-10-04 GB GB9620678A patent/GB2306070B/en not_active Expired - Fee Related
- 1996-10-04 JP JP8264338A patent/JPH09120557A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4695158A (en) * | 1984-03-02 | 1987-09-22 | Pioneer Electronic Corporation | Focus error detector |
WO1996028816A2 (en) * | 1995-03-15 | 1996-09-19 | Philips Electronics N.V. | Device for optically scanning a recording medium |
Also Published As
Publication number | Publication date |
---|---|
GB9620678D0 (en) | 1996-11-20 |
KR970023016A (ko) | 1997-05-30 |
FR2739716B1 (fr) | 1999-01-08 |
JPH09120557A (ja) | 1997-05-06 |
ITMI961993A1 (it) | 1998-03-27 |
NL1004078A1 (nl) | 1997-04-08 |
DE19640838B4 (de) | 2010-10-28 |
KR100200857B1 (ko) | 1999-06-15 |
IT1285224B1 (it) | 1998-06-03 |
DE19640838A1 (de) | 1997-04-10 |
GB2306070B (en) | 2000-02-02 |
FR2739716A1 (fr) | 1997-04-11 |
US5802037A (en) | 1998-09-01 |
GB2306070A (en) | 1997-04-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AD1A | A request for search or an international type search has been filed | ||
PD2B | A search report has been drawn up | ||
V1 | Lapsed because of non-payment of the annual fee |
Effective date: 20120401 |