JPS52113752A - Light beam controller by digital or analog light polarization control - Google Patents

Light beam controller by digital or analog light polarization control

Info

Publication number
JPS52113752A
JPS52113752A JP2874277A JP2874277A JPS52113752A JP S52113752 A JPS52113752 A JP S52113752A JP 2874277 A JP2874277 A JP 2874277A JP 2874277 A JP2874277 A JP 2874277A JP S52113752 A JPS52113752 A JP S52113752A
Authority
JP
Japan
Prior art keywords
digital
polarization control
beam controller
light beam
analog
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.)
Pending
Application number
JP2874277A
Other languages
English (en)
Inventor
Hiru Berunarudo
Petsuperu Riyuudeigeru
Kuriyuugeru Yohan
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of JPS52113752A publication Critical patent/JPS52113752A/ja
Pending 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
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
    • 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
    • G11B7/08—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
    • G11B7/0901—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 track following only
JP2874277A 1976-03-19 1977-03-17 Light beam controller by digital or analog light polarization control Pending JPS52113752A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2611617A DE2611617C2 (de) 1976-03-19 1976-03-19 Elektrisch gesteuerte Einstellvorrichtung für einen digital und analog ablenkgesteuerten Lichtstrahl

Publications (1)

Publication Number Publication Date
JPS52113752A true JPS52113752A (en) 1977-09-24

Family

ID=5972883

Family Applications (2)

Application Number Title Priority Date Filing Date
JP2874277A Pending JPS52113752A (en) 1976-03-19 1977-03-17 Light beam controller by digital or analog light polarization control
JP1985073621U Granted JPS616915U (ja) 1976-03-19 1985-05-20 光ビ−ムの位置決め制御調整装置

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP1985073621U Granted JPS616915U (ja) 1976-03-19 1985-05-20 光ビ−ムの位置決め制御調整装置

Country Status (8)

Country Link
US (1) US4123147A (ja)
JP (2) JPS52113752A (ja)
CA (1) CA1096493A (ja)
DE (1) DE2611617C2 (ja)
FR (1) FR2344864A1 (ja)
GB (1) GB1573789A (ja)
IT (1) IT1077274B (ja)
SE (1) SE418341B (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052829B (en) * 1979-04-27 1983-01-12 Olympus Optical Co Apparatus for driving objective lens in tracking direction
JPS5758249A (en) * 1980-09-24 1982-04-07 Olympus Optical Co Ltd Optical system recording and/or reproducing device
US4374618A (en) * 1981-03-16 1983-02-22 Ibm Corporation Microfilm camera having a moving lens
EP0124580B1 (en) * 1982-11-01 1991-04-03 Storage Technology Partners Ii Fine and coarse servo system for access and tracking on an optical disk
US4805162A (en) * 1982-11-01 1989-02-14 Storage Technology Partners Ii Fine and coarse servo system for access and tracking on an optical disk
DE3324861C2 (de) * 1983-07-09 1986-02-13 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Lesevorrichtung zum optischen Abtasten von auf einem bewegten plattenförmigen Träger aufgezeichneten Informationen
US4831615A (en) * 1985-01-30 1989-05-16 Nippon Columbia Co., Ltd. Dual differential optical system moving apparatus
US4803498A (en) * 1987-07-13 1989-02-07 Blaser Industries, Incorporated Laser printer recording system
DE19516643C1 (de) * 1995-05-05 1996-08-14 Wolfgang A Dr Hamm Vorrichtung zur Ermittlung von auf einen Meßkopf wirkende Kräfte und deren Verwendung
WO2005015142A2 (de) * 2003-08-06 2005-02-17 Testo Ag Radiometer, visiereinrichtung für ein ir-gerät sowie verfahren
DE10336097B3 (de) * 2003-08-06 2005-03-10 Testo Ag Visiereinrichtung für ein Radiometer sowie Verfahren

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381086A (en) * 1962-08-16 1968-04-30 Minnesota Mining & Mfg Reproduction of television signals from photographic disc recordings
US3544980A (en) * 1968-03-22 1970-12-01 Peripheral Systems Corp Magnetic recording disc drive with head positioning and collision avoidance apparatus
US3743794A (en) * 1972-03-02 1973-07-03 Hewlett Packard Co Translational motion apparatus for the magnetic transducers of a disc memory
NL7402768A (nl) * 1974-02-28 1975-09-01 Philips Nv Inrichting voor het schrijven en/of weergeven van informatie in respektievelijk van een draaiende schijfvormige registratiedrager.

Also Published As

Publication number Publication date
DE2611617A1 (de) 1977-09-22
US4123147A (en) 1978-10-31
IT1077274B (it) 1985-05-04
CA1096493A (en) 1981-02-24
GB1573789A (en) 1980-08-28
SE7702949L (sv) 1977-09-20
FR2344864A1 (fr) 1977-10-14
FR2344864B1 (ja) 1982-12-17
SE418341B (sv) 1981-05-18
DE2611617C2 (de) 1983-10-20
JPH0329774Y2 (ja) 1991-06-25
JPS616915U (ja) 1986-01-16

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