GB2306045B - Optical pickup device - Google Patents

Optical pickup device

Info

Publication number
GB2306045B
GB2306045B GB9620677A GB9620677A GB2306045B GB 2306045 B GB2306045 B GB 2306045B GB 9620677 A GB9620677 A GB 9620677A GB 9620677 A GB9620677 A GB 9620677A GB 2306045 B GB2306045 B GB 2306045B
Authority
GB
United Kingdom
Prior art keywords
pickup device
optical pickup
optical
pickup
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
Application number
GB9620677A
Other versions
GB9620677D0 (en
GB2306045A (en
Inventor
Kun-Ho Cho
Eung-Ho Kim
Jang-Hoon Yoo
Kyung-Hwa Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of GB9620677D0 publication Critical patent/GB9620677D0/en
Publication of GB2306045A publication Critical patent/GB2306045A/en
Application granted granted Critical
Publication of GB2306045B publication Critical patent/GB2306045B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G11B7/28—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
    • 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
    • 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
GB9620677A 1995-10-04 1996-10-04 Optical pickup device Expired - Lifetime GB2306045B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950033913A KR100200858B1 (en) 1995-10-04 1995-10-04 Optical pickup device

Publications (3)

Publication Number Publication Date
GB9620677D0 GB9620677D0 (en) 1996-11-20
GB2306045A GB2306045A (en) 1997-04-23
GB2306045B true GB2306045B (en) 1999-08-04

Family

ID=19429197

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9620677A Expired - Lifetime GB2306045B (en) 1995-10-04 1996-10-04 Optical pickup device

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09219036A (en) * 1996-02-15 1997-08-19 Nec Corp Optical head device
KR100729346B1 (en) * 1998-12-29 2007-06-15 코닌클리케 필립스 일렉트로닉스 엔.브이. Optical scanning device for two types of record carriers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5349592A (en) * 1992-02-27 1994-09-20 Kabushiki Kaisha Toshiba Super-resolution optical element for use in image forming apparatus
GB2288483A (en) * 1994-04-07 1995-10-18 Asahi Optical Co Ltd An opto-magnetic head aparatus
WO1997008691A1 (en) * 1995-08-30 1997-03-06 Samsung Electronics Co., Ltd. Lens device and an optical pickup apparatus using the lens device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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
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
DE69608750T2 (en) * 1995-03-15 2001-02-15 Koninkl Philips Electronics Nv DEVICE FOR OPTICALLY SCANNING A RECORDING MEDIA

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5349592A (en) * 1992-02-27 1994-09-20 Kabushiki Kaisha Toshiba Super-resolution optical element for use in image forming apparatus
GB2288483A (en) * 1994-04-07 1995-10-18 Asahi Optical Co Ltd An opto-magnetic head aparatus
WO1997008691A1 (en) * 1995-08-30 1997-03-06 Samsung Electronics Co., Ltd. Lens device and an optical pickup apparatus using the lens device

Also Published As

Publication number Publication date
JP3872145B2 (en) 2007-01-24
ITMI961992A1 (en) 1998-03-27
GB9620677D0 (en) 1996-11-20
DE19640837A1 (en) 1997-04-10
KR100200858B1 (en) 1999-06-15
GB2306045A (en) 1997-04-23
NL1004079C2 (en) 1998-01-07
IT1285223B1 (en) 1998-06-03
NL1004079A1 (en) 1997-04-08
KR970023055A (en) 1997-05-30
JPH09120572A (en) 1997-05-06
DE19640837B4 (en) 2011-01-27
FR2739717A1 (en) 1997-04-11
FR2739717B1 (en) 1999-01-08

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20161003