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
EP0096570B1 (en) * 1982-06-05 1988-08-24 Olympus Optical Co., Ltd. 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
US5406545A (en) * 1992-07-31 1995-04-11 Matsushita Electric Industrial Co., Ltd. Servo pattern in an optical data storage medium for obtaining a tracking error signal
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
JP5583019B2 (ja) * 2007-11-23 2014-09-03 コーニンクレッカ フィリップス エヌ ヴェ ビームシェーパ、光学系及びその使用方法
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
JP6440696B2 (ja) 2013-06-13 2018-12-19 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ 少なくとも１つの物体の方位を光学的に検出する検出器
KR102252336B1 (ko) 2013-06-13 2021-05-14 바스프 에스이 광학 검출기 및 그의 제조 방법
JP2016529474A (ja) 2013-06-13 2016-09-23 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ 少なくとも１つの物体を光学的に検出する検出器
CN105637320B (zh) 2013-08-19 2018-12-14 巴斯夫欧洲公司 光学检测器
JP6483127B2 (ja) 2013-08-19 2019-03-13 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ 少なくとも１つの対象物の位置を求めるための検出器
KR102397527B1 (ko) 2014-07-08 2022-05-13 바스프 에스이 하나 이상의 물체의 위치를 결정하기 위한 검출기
WO2016051323A1 (en) 2014-09-29 2016-04-07 Basf Se Detector for optically determining a position of at least one object
EP3230841B1 (en) 2014-12-09 2019-07-03 Basf Se Optical detector
KR102496245B1 (ko) 2015-01-30 2023-02-06 트리나미엑스 게엠베하 하나 이상의 물체의 광학적 검출을 위한 검출기
KR101692152B1 (ko) * 2015-05-22 2017-01-04 안동대학교 산학협력단 비점수차를 이용한 변위 센서 및 그 변위 측정방법
US10955936B2 (en) 2015-07-17 2021-03-23 Trinamix Gmbh Detector for optically detecting at least one object
KR102539263B1 (ko) 2015-09-14 2023-06-05 트리나미엑스 게엠베하 적어도 하나의 물체의 적어도 하나의 이미지를 기록하는 카메라
US11211513B2 (en) 2016-07-29 2021-12-28 Trinamix Gmbh Optical sensor and detector for an optical detection
WO2018077870A1 (en) 2016-10-25 2018-05-03 Trinamix Gmbh Nfrared optical detector with integrated filter
US11428787B2 (en) 2016-10-25 2022-08-30 Trinamix Gmbh Detector for an optical detection of at least one object
KR102502094B1 (ko) 2016-11-17 2023-02-21 트리나미엑스 게엠베하 적어도 하나의 피사체를 광학적으로 검출하기 위한 검출기
US11860292B2 (en) 2016-11-17 2024-01-02 Trinamix Gmbh Detector and methods for authenticating at least one object
JP7204667B2 (ja) 2017-04-20 2023-01-16 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 光検出器
CN110998223B (zh) 2017-06-26 2021-10-29 特里纳米克斯股份有限公司 用于确定至少一个对像的位置的检测器

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

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950428