IT1062979B - Dispositivo di focalizzazione e lettura ottica comportante un siffatto dispositivo - Google Patents

Dispositivo di focalizzazione e lettura ottica comportante un siffatto dispositivo

Info

Publication number
IT1062979B
IT1062979B IT23270/76A IT2327076A IT1062979B IT 1062979 B IT1062979 B IT 1062979B IT 23270/76 A IT23270/76 A IT 23270/76A IT 2327076 A IT2327076 A IT 2327076A IT 1062979 B IT1062979 B IT 1062979B
Authority
IT
Italy
Prior art keywords
focusing
creates
optical reading
reading device
optical
Prior art date
Application number
IT23270/76A
Other languages
English (en)
Original Assignee
Thomson Brandt
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
Priority claimed from FR7515433A external-priority patent/FR2311326A2/fr
Application filed by Thomson Brandt filed Critical Thomson Brandt
Application granted granted Critical
Publication of IT1062979B publication Critical patent/IT1062979B/it

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/40—Optical focusing aids
    • 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
    • G11B7/13—Optical detectors therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Automatic Focus Adjustment (AREA)
IT23270/76A 1975-05-16 1976-05-14 Dispositivo di focalizzazione e lettura ottica comportante un siffatto dispositivo IT1062979B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7515433A FR2311326A2 (fr) 1974-01-15 1975-05-16 Dispositif de focalisation et lecteur optique comportant un tel dispositif

Publications (1)

Publication Number Publication Date
IT1062979B true IT1062979B (it) 1985-02-11

Family

ID=9155363

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23270/76A IT1062979B (it) 1975-05-16 1976-05-14 Dispositivo di focalizzazione e lettura ottica comportante un siffatto dispositivo

Country Status (4)

Country Link
US (1) US4079247A (it)
JP (1) JPS6048949B2 (it)
GB (1) GB1557210A (it)
IT (1) IT1062979B (it)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55927A (en) * 1978-06-16 1980-01-07 Pioneer Video Corp Focus servo unit of optical information reader
JPS5821334B2 (ja) * 1978-12-25 1983-04-28 株式会社東芝 自動焦点調節装置
GB2066449B (en) * 1979-12-21 1984-03-21 Rolls Royce Monitoring distance variations
FR2502800A1 (fr) * 1981-03-24 1982-10-01 Thomson Csf Senseur optique d'asservissement de focalisation
JPS57208642A (en) * 1981-06-18 1982-12-21 Toshiba Corp Focus controller
JPS5870434A (ja) * 1981-10-22 1983-04-26 Toshiba Corp 光学ヘツド
JPS58118040A (ja) * 1982-01-07 1983-07-13 Mitsubishi Electric Corp 光学式情報記録再生装置
US4441019A (en) * 1982-01-28 1984-04-03 Itek Corporation Wavefront sensor with astigmatic optics
DE3377814D1 (en) * 1982-06-05 1988-09-29 Olympus Optical Co An optical system focus-state detector
JPS59162514A (ja) * 1983-03-08 1984-09-13 Dainippon Screen Mfg Co Ltd 画像走査記録装置における焦点調整方法
JPS60183508A (ja) * 1984-03-02 1985-09-19 Nippon Kogaku Kk <Nikon> 微小間隔検出装置
JPS629537A (ja) * 1985-07-08 1987-01-17 Pioneer Electronic Corp 光学式ピツクアツプ装置
US4798469A (en) * 1985-10-02 1989-01-17 Burke Victor B Noncontact gage system utilizing reflected light
US4778984A (en) * 1985-10-16 1988-10-18 Canon Denshi Kabushiki Kaisha Apparatus for detecting focus from astigmatism
JP2625476B2 (ja) * 1988-03-02 1997-07-02 キヤノン株式会社 光学的記録再生装置
JPH0677332B2 (ja) * 1988-05-31 1994-09-28 株式会社三協精機製作所 光ピックアップ
US5036185A (en) * 1988-12-27 1991-07-30 Kabushiki Kaisha Toshiba Optical apparatus for detecting a focusing state
DE69330232T2 (de) * 1992-07-31 2002-01-10 Matsushita Electric Industrial Co., Ltd. Vorrichtung zur optischen Aufzeichnung/Wiedergabe von Daten
JP3019181B2 (ja) * 1993-12-27 2000-03-13 日本電気株式会社 光ヘッドのサーボ信号検出装置
DE19501884B4 (de) * 1994-02-03 2005-07-21 Carl Zeiss Optische Anordnung
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
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
WO2009066261A2 (en) * 2007-11-23 2009-05-28 Koninklijke Philips Electronics N.V. Beam shaper, optical system and methods using the same
JP6415447B2 (ja) 2012-12-19 2018-10-31 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ １つ以上の物体を光学的に検出するための検出器
EP3008421A1 (en) 2013-06-13 2016-04-20 Basf Se Detector for optically detecting an orientation of at least one object
WO2014198629A1 (en) 2013-06-13 2014-12-18 Basf Se Detector for optically detecting at least one object
KR102252336B1 (ko) 2013-06-13 2021-05-14 바스프 에스이 광학 검출기 및 그의 제조 방법
AU2014310703B2 (en) 2013-08-19 2018-09-27 Basf Se Optical detector
WO2015024870A1 (en) 2013-08-19 2015-02-26 Basf Se Detector for determining a position of at least one object
CN106662636B (zh) 2014-07-08 2020-12-25 巴斯夫欧洲公司 用于确定至少一个对象的位置的检测器
CN106716059B (zh) 2014-09-29 2020-03-13 巴斯夫欧洲公司 用于光学确定至少一个对象的位置的检测器
US11125880B2 (en) 2014-12-09 2021-09-21 Basf Se Optical detector
WO2016120392A1 (en) 2015-01-30 2016-08-04 Trinamix Gmbh Detector for an optical detection of at least one object
KR101692152B1 (ko) * 2015-05-22 2017-01-04 안동대학교 산학협력단 비점수차를 이용한 변위 센서 및 그 변위 측정방법
KR102644439B1 (ko) 2015-07-17 2024-03-07 트리나미엑스 게엠베하 하나 이상의 물체를 광학적으로 검출하기 위한 검출기
US10412283B2 (en) 2015-09-14 2019-09-10 Trinamix Gmbh Dual aperture 3D camera and method using differing aperture areas
JP2019523562A (ja) 2016-07-29 2019-08-22 トリナミクス ゲゼルシャフト ミット ベシュレンクテル ハフツング 光学的検出のための光センサおよび検出器
US11428787B2 (en) 2016-10-25 2022-08-30 Trinamix Gmbh Detector for an optical detection of at least one object
CN109923372B (zh) 2016-10-25 2021-12-21 特里纳米克斯股份有限公司 采用集成滤波器的红外光学检测器
US11415661B2 (en) 2016-11-17 2022-08-16 Trinamix Gmbh Detector for optically detecting at least one object
US11860292B2 (en) 2016-11-17 2024-01-02 Trinamix Gmbh Detector and methods for authenticating at least one object
CN110770555A (zh) 2017-04-20 2020-02-07 特里纳米克斯股份有限公司 光学检测器
JP7237024B2 (ja) 2017-06-26 2023-03-10 トリナミクス ゲゼルシャフト ミット ベシュレンクテル ハフツング 少なくとも１つの物体の位置を決定するための検出器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH465250A (fr) * 1966-10-18 1968-11-15 Genevoise Instr Physique Microscope photoélectrique
US3482102A (en) * 1967-02-20 1969-12-02 Conductron Corp Coherent optical noise suppression by optical alignment of spatial filter
FR2116872A5 (fr) * 1970-12-10 1972-07-21 Compteurs Comp D Perfectionnements aux dispositifs palpeurs optiques
JPS5339123B2 (it) * 1973-12-28 1978-10-19

Also Published As

Publication number Publication date
US4079247A (en) 1978-03-14
JPS51141651A (en) 1976-12-06
JPS6048949B2 (ja) 1985-10-30
GB1557210A (en) 1979-12-05

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950428