GB2326016B - Optical pickup - Google Patents

Optical pickup

Info

Publication number
GB2326016B
GB2326016B GB9816618A GB9816618A GB2326016B GB 2326016 B GB2326016 B GB 2326016B GB 9816618 A GB9816618 A GB 9816618A GB 9816618 A GB9816618 A GB 9816618A GB 2326016 B GB2326016 B GB 2326016B
Authority
GB
United Kingdom
Prior art keywords
optical pickup
pickup
optical
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 - Fee Related
Application number
GB9816618A
Other versions
GB9816618D0 (en
GB2326016A (en
Inventor
Chul-Woo Lee
Keon-Ho Cho
Chong-Sam Chung
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
Priority claimed from KR1019960031540A external-priority patent/KR100188963B1/en
Priority claimed from KR1019960031539A external-priority patent/KR100219669B1/en
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority claimed from GB9714743A external-priority patent/GB2315909B/en
Publication of GB9816618D0 publication Critical patent/GB9816618D0/en
Publication of GB2326016A publication Critical patent/GB2326016A/en
Application granted granted Critical
Publication of GB2326016B publication Critical patent/GB2326016B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/12—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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
GB9816618A 1996-07-30 1997-07-15 Optical pickup Expired - Fee Related GB2326016B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1019960031540A KR100188963B1 (en) 1996-07-30 1996-07-30 Optical pickup device
KR1019960031539A KR100219669B1 (en) 1996-07-30 1996-07-30 Optical pickup device
GB9714743A GB2315909B (en) 1996-07-30 1997-07-15 Optical pickup

Publications (3)

Publication Number Publication Date
GB9816618D0 GB9816618D0 (en) 1998-09-30
GB2326016A GB2326016A (en) 1998-12-09
GB2326016B true GB2326016B (en) 1999-02-17

Family

ID=27268931

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9816618A Expired - Fee Related GB2326016B (en) 1996-07-30 1997-07-15 Optical pickup

Country Status (1)

Country Link
GB (1) GB2326016B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0612068A2 (en) * 1993-02-16 1994-08-24 Nec Corporation Optical head device and birefringent diffraction grating polarizer and polarizing hologram element used therein
EP0740294A1 (en) * 1995-04-26 1996-10-30 Matsushita Electric Industrial Co., Ltd. Optical head

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0612068A2 (en) * 1993-02-16 1994-08-24 Nec Corporation Optical head device and birefringent diffraction grating polarizer and polarizing hologram element used therein
EP0740294A1 (en) * 1995-04-26 1996-10-30 Matsushita Electric Industrial Co., Ltd. Optical head

Also Published As

Publication number Publication date
GB9816618D0 (en) 1998-09-30
GB2326016A (en) 1998-12-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20090715