IL66182A0 - Apparatus for reading information stored on a radiation reflecting record - Google Patents

Apparatus for reading information stored on a radiation reflecting record

Info

Publication number
IL66182A0
IL66182A0 IL66182A IL6618282A IL66182A0 IL 66182 A0 IL66182 A0 IL 66182A0 IL 66182 A IL66182 A IL 66182A IL 6618282 A IL6618282 A IL 6618282A IL 66182 A0 IL66182 A0 IL 66182A0
Authority
IL
Israel
Prior art keywords
information stored
reading information
radiation reflecting
reflecting record
record
Prior art date
Application number
IL66182A
Other languages
English (en)
Original Assignee
Storage Technology 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 Storage Technology Corp filed Critical Storage Technology Corp
Publication of IL66182A0 publication Critical patent/IL66182A0/xx

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
    • G11B7/08—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
    • 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
    • G11B7/1378—Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
IL66182A 1981-06-30 1982-06-30 Apparatus for reading information stored on a radiation reflecting record IL66182A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/279,100 US4458144A (en) 1981-06-30 1981-06-30 Apparatus for reading information stored in a track pattern on a radiation reflecting record

Publications (1)

Publication Number Publication Date
IL66182A0 true IL66182A0 (en) 1982-09-30

Family

ID=23067636

Family Applications (1)

Application Number Title Priority Date Filing Date
IL66182A IL66182A0 (en) 1981-06-30 1982-06-30 Apparatus for reading information stored on a radiation reflecting record

Country Status (7)

Country Link
US (1) US4458144A (fr)
EP (1) EP0068904B1 (fr)
JP (1) JPS5845632A (fr)
AU (1) AU8547182A (fr)
CA (1) CA1203901A (fr)
DE (1) DE3273675D1 (fr)
IL (1) IL66182A0 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58208944A (ja) * 1982-05-31 1983-12-05 Sony Corp 光学ヘツド制御信号発生装置
US4581695A (en) * 1984-12-12 1986-04-08 Sundstrand Corporation Rectifier assembly
DE3683634D1 (de) * 1985-09-10 1992-03-05 Mitsubishi Electric Corp Anordnung mit optischem kopf.
US4799210A (en) * 1986-11-05 1989-01-17 Unisys Corporation Fiber optic read/write head for an optical disk memory system
US4816665A (en) * 1987-08-06 1989-03-28 Maxtor Corporation Sensor array for focus detection
NL8703041A (nl) * 1987-12-16 1989-07-17 Philips Nv Optische aftasteenheid en een optische uitlees- en/of inschrijfinrichting daarvan voorzien.
US5216562A (en) * 1990-09-25 1993-06-01 International Business Machines Corporation Multi-beam optical recording system and method
US5677903A (en) * 1991-03-25 1997-10-14 U.S. Phillips Corporation Multi-layer information storage system with improved aberration correction
JP3057857B2 (ja) * 1991-11-08 2000-07-04 日本鋼管株式会社 高トルクツールジョイント
US5646919A (en) * 1996-01-16 1997-07-08 Eastman Kodak Company Dynamic tracking control in an optical recording system by sensing mark formation
KR20080076649A (ko) * 2007-02-16 2008-08-20 삼성전자주식회사 광 픽업과 이를 갖는 디스크장치

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL182257C (nl) * 1974-12-23 1988-02-01 Philips Nv Inrichting voor het uitlezen van een vlakke reflekterende registratiedrager waarop informatie is aangebracht in een optisch uitleesbare struktuur.
NL177157C (nl) * 1975-02-28 1985-08-01 Philips Nv Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestruktuur.
NL182990C (nl) * 1975-07-07 1988-06-16 Philips Nv Inrichting voor het uitlezen van een stralingsreflekterende registratiedrager.
FR2325987A1 (fr) * 1975-09-29 1977-04-22 Thomson Brandt Dispositif de lecture optique d'un enregistrement
US4025949A (en) * 1975-12-31 1977-05-24 Zenith Radio Corporation Symmetrical astigmatic focus sensing system
NL7600843A (nl) * 1976-01-28 1977-08-01 Philips Nv Inrichting voor het uitlezen van een registratie- drager waarop informatie, bijvoorbeeld en/of ge- luidsinformatie, is aangebracht.
JPS608534B2 (ja) * 1976-08-09 1985-03-04 株式会社日立製作所 自動焦点合せ光学装置
JPS5339123A (en) * 1976-09-22 1978-04-10 Canon Inc Automatic winder of cameras
JPS5398802A (en) * 1977-02-09 1978-08-29 Mitsubishi Electric Corp Optical reproducer
GB1603596A (en) * 1977-06-06 1981-11-25 Mca Disco Vision Optical transducer and focusing system
US4142098A (en) * 1977-07-05 1979-02-27 Zenith Radio Corporation Optical readout for reflective video discs

Also Published As

Publication number Publication date
DE3273675D1 (en) 1986-11-13
EP0068904A1 (fr) 1983-01-05
AU8547182A (en) 1983-01-06
CA1203901A (fr) 1986-04-29
US4458144A (en) 1984-07-03
EP0068904B1 (fr) 1986-10-08
JPS5845632A (ja) 1983-03-16

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