NL1004079A1 - Optical scanner. - Google Patents
Optical scanner.Info
- Publication number
- NL1004079A1 NL1004079A1 NL1004079A NL1004079A NL1004079A1 NL 1004079 A1 NL1004079 A1 NL 1004079A1 NL 1004079 A NL1004079 A NL 1004079A NL 1004079 A NL1004079 A NL 1004079A NL 1004079 A1 NL1004079 A1 NL 1004079A1
- Authority
- NL
- Netherlands
- Prior art keywords
- optical scanner
- scanner
- optical
- 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
- G11B7/12—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 |
---|---|---|---|
KR1019950033913A KR100200858B1 (en) | 1995-10-04 | 1995-10-04 | Optical pickup device |
KR19950033913 | 1995-10-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
NL1004079A1 true NL1004079A1 (en) | 1997-04-08 |
NL1004079C2 NL1004079C2 (en) | 1998-01-07 |
Family
ID=19429197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL1004079A NL1004079C2 (en) | 1995-10-04 | 1996-09-20 | Optical scanner. |
Country Status (7)
Country | Link |
---|---|
JP (1) | JP3872145B2 (en) |
KR (1) | KR100200858B1 (en) |
DE (1) | DE19640837B4 (en) |
FR (1) | FR2739717B1 (en) |
GB (1) | GB2306045B (en) |
IT (1) | IT1285223B1 (en) |
NL (1) | NL1004079C2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09219036A (en) * | 1996-02-15 | 1997-08-19 | Nec Corp | Optical head device |
WO2000039791A1 (en) * | 1998-12-29 | 2000-07-06 | Koninklijke Philips Electronics N.V. | Optical scanning device for two types of record carriers |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60185230A (en) * | 1984-03-02 | 1985-09-20 | Pioneer Electronic Corp | Focal error detector |
US5281797A (en) * | 1991-12-26 | 1994-01-25 | Hitachi, Ltd. | Short wavelength optical disk head having a changeable aperture |
US5349592A (en) * | 1992-02-27 | 1994-09-20 | Kabushiki Kaisha Toshiba | Super-resolution optical element for use in image forming apparatus |
JP2532818B2 (en) * | 1993-02-01 | 1996-09-11 | 松下電器産業株式会社 | Objective lens and optical head device |
JPH06295467A (en) * | 1993-04-01 | 1994-10-21 | Nippon Columbia Co Ltd | Optical pickup device |
JP3548259B2 (en) * | 1994-04-07 | 2004-07-28 | ペンタックス株式会社 | Magneto-optical head device |
JPH10500526A (en) * | 1995-03-15 | 1998-01-13 | フィリップス エレクトロニクス ネムローゼ フェンノートシャップ | Apparatus for optically scanning a recording medium |
WO1997008691A1 (en) * | 1995-08-30 | 1997-03-06 | Samsung Electronics Co., Ltd. | Lens device and an optical pickup apparatus using the lens device |
-
1995
- 1995-10-04 KR KR1019950033913A patent/KR100200858B1/en not_active IP Right Cessation
-
1996
- 1996-09-20 NL NL1004079A patent/NL1004079C2/en not_active IP Right Cessation
- 1996-09-27 IT IT96MI001992A patent/IT1285223B1/en active IP Right Grant
- 1996-10-02 DE DE19640837A patent/DE19640837B4/en not_active Expired - Lifetime
- 1996-10-02 FR FR9611994A patent/FR2739717B1/en not_active Expired - Lifetime
- 1996-10-04 GB GB9620677A patent/GB2306045B/en not_active Expired - Lifetime
- 1996-10-04 JP JP26433996A patent/JP3872145B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB9620677D0 (en) | 1996-11-20 |
FR2739717B1 (en) | 1999-01-08 |
KR100200858B1 (en) | 1999-06-15 |
ITMI961992A1 (en) | 1998-03-27 |
IT1285223B1 (en) | 1998-06-03 |
DE19640837A1 (en) | 1997-04-10 |
JPH09120572A (en) | 1997-05-06 |
KR970023055A (en) | 1997-05-30 |
GB2306045A (en) | 1997-04-23 |
NL1004079C2 (en) | 1998-01-07 |
FR2739717A1 (en) | 1997-04-11 |
JP3872145B2 (en) | 2007-01-24 |
DE19640837B4 (en) | 2011-01-27 |
GB2306045B (en) | 1999-08-04 |
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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 | ||
MK | Patent expired because of reaching the maximum lifetime of a patent |
Effective date: 20160919 |