GB2190094B - Optical pick-up and setting block - Google Patents

Optical pick-up and setting block

Info

Publication number
GB2190094B
GB2190094B GB8708157A GB8708157A GB2190094B GB 2190094 B GB2190094 B GB 2190094B GB 8708157 A GB8708157 A GB 8708157A GB 8708157 A GB8708157 A GB 8708157A GB 2190094 B GB2190094 B GB 2190094B
Authority
GB
United Kingdom
Prior art keywords
optical pick
setting block
setting
block
pick
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
GB8708157A
Other versions
GB8708157D0 (en
GB2190094A (en
Inventor
Tsuneyoshi Okada
Yasuyuki Takeda
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.)
Polyplastics Co Ltd
Original Assignee
Polyplastics 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 Polyplastics Co Ltd filed Critical Polyplastics Co Ltd
Publication of GB8708157D0 publication Critical patent/GB8708157D0/en
Publication of GB2190094A publication Critical patent/GB2190094A/en
Application granted granted Critical
Publication of GB2190094B publication Critical patent/GB2190094B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/12—Polyester-amides
    • 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
    • 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
    • G11B7/22—Apparatus or processes for the manufacture of optical heads, e.g. assembly

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Optical Head (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
GB8708157A 1986-04-07 1987-04-06 Optical pick-up and setting block Expired - Fee Related GB2190094B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61079582A JP2683337B2 (en) 1986-04-07 1986-04-07 Optical pickup

Publications (3)

Publication Number Publication Date
GB8708157D0 GB8708157D0 (en) 1987-05-13
GB2190094A GB2190094A (en) 1987-11-11
GB2190094B true GB2190094B (en) 1990-02-28

Family

ID=13693977

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8708157A Expired - Fee Related GB2190094B (en) 1986-04-07 1987-04-06 Optical pick-up and setting block

Country Status (4)

Country Link
JP (1) JP2683337B2 (en)
KR (1) KR900008406B1 (en)
GB (1) GB2190094B (en)
SG (1) SG36590G (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02113817U (en) * 1989-02-22 1990-09-12
JPH08220407A (en) * 1995-02-17 1996-08-30 Toray Ind Inc Optical pickup lens holder
JP5066861B2 (en) * 2006-02-07 2012-11-07 住友化学株式会社 Liquid crystal polyester and solution composition thereof

Also Published As

Publication number Publication date
KR870010500A (en) 1987-11-30
GB8708157D0 (en) 1987-05-13
GB2190094A (en) 1987-11-11
SG36590G (en) 1990-08-17
JPS62236143A (en) 1987-10-16
KR900008406B1 (en) 1990-11-20
JP2683337B2 (en) 1997-11-26

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Legal Events

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

Effective date: 19930406