DE69215828D1 - Optischer Abtastkopf - Google Patents

Optischer Abtastkopf

Info

Publication number
DE69215828D1
DE69215828D1 DE69215828T DE69215828T DE69215828D1 DE 69215828 D1 DE69215828 D1 DE 69215828D1 DE 69215828 T DE69215828 T DE 69215828T DE 69215828 T DE69215828 T DE 69215828T DE 69215828 D1 DE69215828 D1 DE 69215828D1
Authority
DE
Germany
Prior art keywords
optical scanning
scanning head
head
optical
scanning
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
DE69215828T
Other languages
English (en)
Other versions
DE69215828T2 (de
Inventor
Yoshito Asoma
Satoshi Hineno
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE69215828D1 publication Critical patent/DE69215828D1/de
Publication of DE69215828T2 publication Critical patent/DE69215828T2/de
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
    • G11B7/1372—Lenses
    • G11B7/1376—Collimator 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
DE69215828T 1991-10-16 1992-10-14 Optischer Abtastkopf Expired - Fee Related DE69215828T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3294806A JPH05109110A (ja) 1991-10-16 1991-10-16 光学ピツクアツプ装置

Publications (2)

Publication Number Publication Date
DE69215828D1 true DE69215828D1 (de) 1997-01-23
DE69215828T2 DE69215828T2 (de) 1997-04-03

Family

ID=17812502

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69215828T Expired - Fee Related DE69215828T2 (de) 1991-10-16 1992-10-14 Optischer Abtastkopf

Country Status (4)

Country Link
EP (1) EP0537712B1 (de)
JP (1) JPH05109110A (de)
KR (1) KR930008763A (de)
DE (1) DE69215828T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5674477A (en) * 1995-02-28 1997-10-07 Ahluwalia; Gurpreet S. Reduction of hair growth
US6248341B1 (en) 2000-01-14 2001-06-19 Color Access, Inc. Method of treating topical angiogenesis-related disorders
US20210236398A1 (en) * 2020-01-31 2021-08-05 L'oreal Compositions and methods for hair

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4235507A (en) * 1977-09-16 1980-11-25 Hitachi, Ltd. Optical system to condense light from a semiconductor laser into a circular spot
JPS5942647A (ja) * 1982-09-02 1984-03-09 Sony Corp デイスク装置のラジアルスキユ−補正装置
US4720825A (en) * 1984-02-06 1988-01-19 Asahi Kogaku Kogyo Kabushiki Kaisha Optical data reproducing devices having improved trick play capability
JPS63268139A (ja) * 1987-04-24 1988-11-04 Alps Electric Co Ltd 光学式ピツクアツプの光学装置

Also Published As

Publication number Publication date
EP0537712B1 (de) 1996-12-11
KR930008763A (ko) 1993-05-21
EP0537712A3 (en) 1993-06-09
JPH05109110A (ja) 1993-04-30
DE69215828T2 (de) 1997-04-03
EP0537712A2 (de) 1993-04-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee