WO2000043997A3 - Optical pickup apparatus - Google Patents
Optical pickup apparatus Download PDFInfo
- Publication number
- WO2000043997A3 WO2000043997A3 PCT/JP2000/000284 JP0000284W WO0043997A3 WO 2000043997 A3 WO2000043997 A3 WO 2000043997A3 JP 0000284 W JP0000284 W JP 0000284W WO 0043997 A3 WO0043997 A3 WO 0043997A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light flux
- diffracted ray
- wavelength
- optical
- pickup apparatus
- 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
- G11B7/1353—Diffractive elements, e.g. holograms or gratings
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
-
- 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
- G11B7/1275—Two or more lasers having different wavelengths
-
- 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
- G11B7/1372—Lenses
- G11B7/1374—Objective lenses
-
- 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
- G11B7/139—Numerical aperture control means
-
- 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
- G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
- G11B7/13922—Means for controlling the beam wavefront, e.g. for correction of aberration passive
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0084—Key or electric means; Emergency release
- E05B2047/0086—Emergency release, e.g. key or electromagnet
- E05B2047/0087—Electric spare devices, e.g. auxiliary batteries or capacitors for back up
-
- 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
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU21294/00A AU760001B2 (en) | 1999-01-22 | 2000-01-21 | Optical pickup apparatus |
CA002359309A CA2359309C (en) | 1999-01-22 | 2000-01-21 | Optical pickup apparatus |
Applications Claiming Priority (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1501099 | 1999-01-22 | ||
JP11/15010 | 1999-01-22 | ||
JP11/41925 | 1999-02-19 | ||
JP4192599 | 1999-02-19 | ||
JP9534799 | 1999-04-01 | ||
JP11/95347 | 1999-04-01 | ||
JP9748099 | 1999-04-05 | ||
JP11/97480 | 1999-04-05 | ||
JP25746699 | 1999-09-10 | ||
JP11/257466 | 1999-09-10 | ||
JP11/312701 | 1999-11-02 | ||
JP31270199 | 1999-11-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000043997A2 WO2000043997A2 (en) | 2000-07-27 |
WO2000043997A3 true WO2000043997A3 (en) | 2002-03-07 |
Family
ID=27548555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/000284 WO2000043997A2 (en) | 1999-01-22 | 2000-01-21 | Optical pickup apparatus |
Country Status (12)
Country | Link |
---|---|
US (13) | US6870805B1 (en) |
EP (8) | EP1182653B1 (en) |
JP (3) | JP4775674B2 (en) |
KR (7) | KR100411219B1 (en) |
CN (5) | CN1553441A (en) |
AT (7) | ATE363122T1 (en) |
AU (1) | AU760001B2 (en) |
CA (1) | CA2359309C (en) |
DE (7) | DE60034825T2 (en) |
HK (1) | HK1026977A1 (en) |
ID (1) | ID29992A (en) |
WO (1) | WO2000043997A2 (en) |
Families Citing this family (123)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1182653B1 (en) | 1999-01-22 | 2005-03-16 | Konica Minolta Opto, Inc. | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method |
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US6594222B2 (en) | 1999-12-28 | 2003-07-15 | Pentax Corporation | Objective lens for optical pick-up |
US7903528B2 (en) * | 2000-05-12 | 2011-03-08 | Konica Minolta Opto, Inc. | Optical pick-up apparatus |
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DE60140028D1 (en) * | 2000-07-22 | 2009-11-12 | Samsung Electronics Co Ltd | Compatible optical scanning device |
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JP4775612B2 (en) * | 2001-03-26 | 2011-09-21 | コニカミノルタホールディングス株式会社 | Objective lens for optical pickup device and optical pickup device |
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AU2002210950A1 (en) * | 2000-10-30 | 2002-05-15 | Konica Corporation | Objective lens, light converging optical system, optical pickup apparatus, and recording/reproducing apparatus |
JP3522212B2 (en) * | 2000-11-10 | 2004-04-26 | 株式会社ケンウッド | Small displacement detection device using sound, etc. |
EP1338008A2 (en) * | 2000-11-14 | 2003-08-27 | Koninklijke Philips Electronics N.V. | Optical scanning device |
JP4716239B2 (en) * | 2000-11-14 | 2011-07-06 | コニカミノルタホールディングス株式会社 | Objective lens for optical pickup device and optical pickup device |
US6873590B2 (en) * | 2001-03-09 | 2005-03-29 | Pentax Corporation | Objective lens for optical pick-up |
JP4666563B2 (en) * | 2001-04-05 | 2011-04-06 | 中興マーク株式会社 | Optical scanning device |
US6807139B2 (en) * | 2001-04-12 | 2004-10-19 | Konica Corporation | Objective lens and optical pickup apparatus |
KR20020081077A (en) * | 2001-04-18 | 2002-10-26 | 코니카가부시끼가이샤 | Objective lens, converging optical system, optical pickup apparatus and recording and/or reproducing apparatus |
JP4817035B2 (en) * | 2001-05-09 | 2011-11-16 | コニカミノルタホールディングス株式会社 | Objective lens, optical pickup device, and recording / reproducing device |
JP2003067972A (en) * | 2001-05-29 | 2003-03-07 | Nec Corp | Optical head and optical information recording and reproducing device |
US6995886B2 (en) * | 2001-06-21 | 2006-02-07 | Koninklijke Philips Electronics N.V. | Optical scanning device |
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DE10160378A1 (en) * | 2001-12-10 | 2003-06-18 | Thomson Brandt Gmbh | Playback or recording device for different optical recording media |
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US20040156302A1 (en) * | 2003-01-07 | 2004-08-12 | Matsushita Electric Industrial Co., Ltd. | Optical head |
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