GB1541596A - Optical focussing read-out device - Google Patents

Optical focussing read-out device

Info

Publication number
GB1541596A
GB1541596A GB1711576A GB1711576A GB1541596A GB 1541596 A GB1541596 A GB 1541596A GB 1711576 A GB1711576 A GB 1711576A GB 1711576 A GB1711576 A GB 1711576A GB 1541596 A GB1541596 A GB 1541596A
Authority
GB
United Kingdom
Prior art keywords
read
out device
optical focussing
focussing
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
Application number
GB1711576A
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.)
Thomson-Brandt SA
Original Assignee
Thomson-Brandt SA
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 Thomson-Brandt SA filed Critical Thomson-Brandt SA
Publication of GB1541596A publication Critical patent/GB1541596A/en
Expired 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
    • G11B7/08—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
GB1711576A 1975-04-30 1976-04-27 Optical focussing read-out device Expired GB1541596A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7513620A FR2309888A1 (en) 1975-04-30 1975-04-30 OPTICAL PROJECTION DEVICE AND OPTICAL READER INCLUDING SUCH A DEVICE

Publications (1)

Publication Number Publication Date
GB1541596A true GB1541596A (en) 1979-03-07

Family

ID=9154695

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1711576A Expired GB1541596A (en) 1975-04-30 1976-04-27 Optical focussing read-out device

Country Status (5)

Country Link
JP (1) JPS5931776B2 (en)
CA (1) CA1071330A (en)
DE (1) DE2619232A1 (en)
FR (1) FR2309888A1 (en)
GB (1) GB1541596A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0294902B1 (en) * 1987-06-11 1991-12-18 Koninklijke Philips Electronics N.V. Optical scanning device, mirror objective suitable for use therein and an optical recording and/or reproducing apparatus provided therewith

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302830A (en) * 1978-05-10 1981-11-24 Olympus Optical Company Ltd. Optical information reading-out apparatus
NL8003729A (en) * 1980-06-27 1982-01-18 Philips Nv DEVICE FOR OPTICAL FOCUSING.
NL8004969A (en) * 1980-09-02 1982-04-01 Philips Nv DEVICE FOR OPTICAL FOCUSING.
DE3039425A1 (en) * 1980-10-18 1982-05-19 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar DEVICE FOR PHOTOELECTRICALLY DETERMINING THE POSITION OF AT LEAST ONE FOCUS OF AN IMAGE
JPS59168835U (en) * 1983-04-27 1984-11-12 パイオニア株式会社 Optical recording information reading device
JPS6022743A (en) * 1984-04-24 1985-02-05 Olympus Optical Co Ltd Pickup for disk reproducer containing information recorded optically
DE3544771A1 (en) * 1985-12-18 1987-06-19 Messerschmitt Boelkow Blohm Method and device for imaging an object on a detector having radiation-sensitive regions separated from one another by dead spaces
JPS62163978U (en) * 1986-04-08 1987-10-17
JP2676371B2 (en) * 1988-07-04 1997-11-12 パイオニア株式会社 Pickup height adjuster
NL8803055A (en) * 1988-12-13 1990-07-02 Philips Nv OPTICAL SCANNER, MIRROR-LIKE SUITABLE FOR APPLICATION THEREIN, AND OPTICAL REGISTER AND / OR READER EQUIPPED WITH THIS SCANNER.
NL8803048A (en) * 1988-12-13 1990-07-02 Philips Nv OPTICAL SCANNING DEVICE, MIRROR-LIKE SUITABLE FOR USE THEREIN, AND OPTICAL ENTRY AND / OR READING EQUIPMENT PROVIDED WITH THE SCANNING DEVICE.
DE4213556C2 (en) * 1992-04-24 1994-04-28 Max Planck Gesellschaft Device for the optical scanning of a record carrier, in particular a phosphor storage disk
CN109782962A (en) * 2018-12-11 2019-05-21 中国科学院深圳先进技术研究院 A kind of projection interactive method, device, system and terminal device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0294902B1 (en) * 1987-06-11 1991-12-18 Koninklijke Philips Electronics N.V. Optical scanning device, mirror objective suitable for use therein and an optical recording and/or reproducing apparatus provided therewith

Also Published As

Publication number Publication date
FR2309888B1 (en) 1977-11-10
JPS5931776B2 (en) 1984-08-04
JPS51134604A (en) 1976-11-22
DE2619232A1 (en) 1976-11-11
CA1071330A (en) 1980-02-05
FR2309888A1 (en) 1976-11-26

Similar Documents

Publication Publication Date Title
GB1557210A (en) Optical focusing device
GB1553440A (en) Optical focussing sensor
GB2095500B (en) Optical device
AU501590B2 (en) Optical focussing device
JPS544105A (en) Lens focusing device
YU41297B (en) Optical scanning device
AU1738576A (en) Optical elements
JPS5470850A (en) Optical device
JPS5282205A (en) Automatic optical focusing device
JPS5346028A (en) Automatic focusing device
JPS522727A (en) Optical device
JPS54100755A (en) Multiimode optical device
JPS51132758A (en) Particle beam optical device
GB1541596A (en) Optical focussing read-out device
DE3062719D1 (en) Optical focussing device
JPS5384378A (en) Radiation focusing device
JPS51113601A (en) Acoustic focusing lens device
JPS5297728A (en) Optical device
JPS5392994A (en) Nonnspheruial lens creating device
JPS542146A (en) Optical device
JPS533333A (en) Automatic focusing device
JPS5223354A (en) Optical slit device
AU1194476A (en) Optical device
JPS5267322A (en) Focusing device
JPS5367424A (en) Automatic focusing device

Legal Events

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