FR2321711B1 - - Google Patents

Info

Publication number
FR2321711B1
FR2321711B1 FR7525693A FR7525693A FR2321711B1 FR 2321711 B1 FR2321711 B1 FR 2321711B1 FR 7525693 A FR7525693 A FR 7525693A FR 7525693 A FR7525693 A FR 7525693A FR 2321711 B1 FR2321711 B1 FR 2321711B1
Authority
FR
France
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
FR7525693A
Other versions
FR2321711A1 (fr
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
Priority to FR7525693A priority Critical patent/FR2321711A1/fr
Priority to US05/714,805 priority patent/US4128309A/en
Priority to CA259,254A priority patent/CA1082342A/fr
Priority to DE19762637056 priority patent/DE2637056A1/de
Priority to JP9854376A priority patent/JPS5282205A/ja
Publication of FR2321711A1 publication Critical patent/FR2321711A1/fr
Application granted granted Critical
Publication of FR2321711B1 publication Critical patent/FR2321711B1/fr
Granted 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Lenses (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
FR7525693A 1975-08-19 1975-08-19 Dispositif optique a mise au point automatique et lecteur optique comportant un tel dispositif Granted FR2321711A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7525693A FR2321711A1 (fr) 1975-08-19 1975-08-19 Dispositif optique a mise au point automatique et lecteur optique comportant un tel dispositif
US05/714,805 US4128309A (en) 1975-08-19 1976-08-16 Automatic optical focusing device
CA259,254A CA1082342A (fr) 1975-08-19 1976-08-17 Dispositif de mise au point automatique et lecteur optique comportant ledit dispositif
DE19762637056 DE2637056A1 (de) 1975-08-19 1976-08-18 Automatische optische einstellvorrichtung und damit ausgeruesteter optischer leser
JP9854376A JPS5282205A (en) 1975-08-19 1976-08-18 Automatic optical focusing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7525693A FR2321711A1 (fr) 1975-08-19 1975-08-19 Dispositif optique a mise au point automatique et lecteur optique comportant un tel dispositif

Publications (2)

Publication Number Publication Date
FR2321711A1 FR2321711A1 (fr) 1977-03-18
FR2321711B1 true FR2321711B1 (fr) 1979-02-02

Family

ID=9159187

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7525693A Granted FR2321711A1 (fr) 1975-08-19 1975-08-19 Dispositif optique a mise au point automatique et lecteur optique comportant un tel dispositif

Country Status (5)

Country Link
US (1) US4128309A (fr)
JP (1) JPS5282205A (fr)
CA (1) CA1082342A (fr)
DE (1) DE2637056A1 (fr)
FR (1) FR2321711A1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421394A2 (fr) * 1978-03-29 1979-10-26 Quantel Sa Systeme optique a focale variable
FR2389144A1 (fr) * 1977-04-27 1978-11-24 Quantel Sa Lentille a focale variable
FR2425085A1 (fr) * 1978-05-05 1979-11-30 Quantel Sa Objectif a longueur focale variable
US4588268A (en) * 1984-03-12 1986-05-13 Itek Corporation Tip-tilt mirror actuation system having simplified driver circuitry
US4749840A (en) * 1986-05-16 1988-06-07 Image Micro Systems, Inc. Intense laser irradiation using reflective optics
US5498868A (en) * 1993-09-02 1996-03-12 Nippondenso Co., Ltd. Optical data reader capable of quickly changing a condensing position of a light beam
FR2723243B1 (fr) * 1994-07-26 1996-09-06 Thomson Csf Dispositif d'enregistrement et/ou de lecture de tetes magnetiques et son procede de realisation
FR2739965B1 (fr) * 1995-10-17 1997-11-07 Thomson Csf Dispositif emetteur-recepteur de lumiere et systeme de lecture optique
FR2786345B1 (fr) 1998-11-24 2001-02-09 Thomson Csf Dispositif de cryptage quantique
US6874897B2 (en) * 2000-01-27 2005-04-05 Aoptix Technologies, Inc. Deformable curvature mirror with unipolar-wiring
US6464364B2 (en) * 2000-01-27 2002-10-15 Aoptix Technologies, Inc. Deformable curvature mirror
US7149173B2 (en) * 2000-10-17 2006-12-12 Thales Medium for recording optically readable data, method for making same and optical system reproducing said data
FR2824905B1 (fr) * 2001-05-15 2003-08-29 Thomson Csf Gyrometre a fibre optique
US6721510B2 (en) 2001-06-26 2004-04-13 Aoptix Technologies, Inc. Atmospheric optical data transmission system
AT411585B (de) * 2002-04-11 2004-03-25 Cincinnati Extrusion Gmbh Verfahren und vorrichtung zum beschicken eines extruders
US7289736B1 (en) 2003-01-13 2007-10-30 Aoptix Technologies Adaptive optics imaging system with object acquisition capability
US7286766B2 (en) * 2003-01-16 2007-10-23 Aoptix Technologies, Inc. Free space optical communication system with power level management
US7967456B2 (en) * 2007-11-02 2011-06-28 The United States Of America As Represented By The Secretary Of The Army Scalable size deformable pocket mirror with on-pocket bimorph actuator
DE102010028111B4 (de) 2010-04-22 2016-01-21 Technische Universität Dresden Mikromechanisches Element
JP6612439B2 (ja) * 2015-09-23 2019-11-27 カール・ツァイス・エスエムティー・ゲーエムベーハー 圧電装置を備える光学結像装置
CN110244388B (zh) * 2019-05-24 2021-03-26 华中科技大学 一种基于超表面的电可调卡塞格林反射系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299368A (en) * 1963-06-24 1967-01-17 United Aircraft Corp Laser light gate with piezoelectric crystal
NL7206376A (fr) * 1972-05-11 1973-11-13

Also Published As

Publication number Publication date
FR2321711A1 (fr) 1977-03-18
DE2637056A1 (de) 1977-03-03
CA1082342A (fr) 1980-07-22
JPS5282205A (en) 1977-07-09
US4128309A (en) 1978-12-05

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Legal Events

Date Code Title Description
ST Notification of lapse