NL8601876A - Inrichting voor het aftasten van een optische registratiedrager. - Google Patents

Inrichting voor het aftasten van een optische registratiedrager. Download PDF

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Publication number
NL8601876A
NL8601876A NL8601876A NL8601876A NL8601876A NL 8601876 A NL8601876 A NL 8601876A NL 8601876 A NL8601876 A NL 8601876A NL 8601876 A NL8601876 A NL 8601876A NL 8601876 A NL8601876 A NL 8601876A
Authority
NL
Netherlands
Prior art keywords
detection system
radiation
grating
plane
grid
Prior art date
Application number
NL8601876A
Other languages
English (en)
Dutch (nl)
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Priority to NL8601876A priority Critical patent/NL8601876A/nl
Priority to US06/939,205 priority patent/US4800547A/en
Priority to EP87201300A priority patent/EP0253442A1/fr
Priority to JP62176081A priority patent/JPS6332730A/ja
Priority to AU75766/87A priority patent/AU597087B2/en
Publication of NL8601876A publication Critical patent/NL8601876A/nl

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
    • 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
    • G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
NL8601876A 1986-07-18 1986-07-18 Inrichting voor het aftasten van een optische registratiedrager. NL8601876A (nl)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL8601876A NL8601876A (nl) 1986-07-18 1986-07-18 Inrichting voor het aftasten van een optische registratiedrager.
US06/939,205 US4800547A (en) 1986-07-18 1986-12-08 Optical record carrier scanning apparatus with scanning beam focus error detection
EP87201300A EP0253442A1 (fr) 1986-07-18 1987-07-08 Appareil pour balayage d'un support d'enregistrement optique
JP62176081A JPS6332730A (ja) 1986-07-18 1987-07-16 光記録担体用走査装置
AU75766/87A AU597087B2 (en) 1986-07-18 1987-07-17 Apparatus for scanning an optical record carrier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8601876A NL8601876A (nl) 1986-07-18 1986-07-18 Inrichting voor het aftasten van een optische registratiedrager.
NL8601876 1986-07-18

Publications (1)

Publication Number Publication Date
NL8601876A true NL8601876A (nl) 1988-02-16

Family

ID=19848335

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8601876A NL8601876A (nl) 1986-07-18 1986-07-18 Inrichting voor het aftasten van een optische registratiedrager.

Country Status (5)

Country Link
US (1) US4800547A (fr)
EP (1) EP0253442A1 (fr)
JP (1) JPS6332730A (fr)
AU (1) AU597087B2 (fr)
NL (1) NL8601876A (fr)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4850673A (en) * 1987-11-23 1989-07-25 U. S. Philips Corporation Optical scanning apparatus which detects scanning spot focus error
US5064290A (en) * 1987-12-12 1991-11-12 Renishaw Plc Opto-electronic scale-reading apparatus wherein phase-separated secondary orders of diffraction are generated
DE3855532T2 (de) * 1987-12-24 1997-04-30 Kuraray Co Polarisierendes optisches Element und Einrichtung unter Benutzung desselben
US4972075A (en) * 1988-08-02 1990-11-20 Minolta Camera Kabushiki Kaisha Automatic focusing system with dual diffraction gratings and converging means
US5062094A (en) * 1988-11-07 1991-10-29 Minolta Camera Kabushiki Kaisha Optical head for optical disk system
FR2639460B1 (fr) * 1988-11-21 1993-05-21 Ricoh Kk Appareil d'enregistrement/reproduction optique
US5124843A (en) * 1989-12-27 1992-06-23 Massachusetts Institute Of Technology Array illuminator using a binary optics phase plate
US5046794A (en) * 1990-03-30 1991-09-10 Holotek Ltd. Hologon scanner system
CA2043978C (fr) * 1990-06-13 1999-08-10 Yoshio Yoshida Element diffractionnel a polarisation et detecteur a polarisation employant cet element
US5170221A (en) * 1990-06-15 1992-12-08 Okuma Corp. Parallel light ray measuring apparatus
US5121371A (en) * 1990-06-18 1992-06-09 Bernoulli Optical Systems Company Optical servo system for magnetic disk
US5075560A (en) * 1990-09-20 1991-12-24 Eastman Kodak Company Moire distance measurements using a grating printed on or attached to a surface
GB9023659D0 (en) * 1990-10-31 1990-12-12 Renishaw Plc Opto-electronic scale reading apparatus
US5652426A (en) * 1993-04-19 1997-07-29 Ricoh Company, Ltd. Optical encoder having high resolution
US5969346A (en) * 1995-08-22 1999-10-19 Minolta Co., Ltd. Laser beam scanning optical apparatus
JPH1090623A (ja) * 1995-08-22 1998-04-10 Minolta Co Ltd レーザビーム走査光学装置
US5991004A (en) * 1996-04-03 1999-11-23 Mrs Technology, Inc. Lens focus shift sensor
JPH10134377A (ja) * 1996-10-28 1998-05-22 Nec Corp 光ヘッド装置
JPH10274745A (ja) * 1997-03-31 1998-10-13 Minolta Co Ltd レーザビーム走査光学装置
US6781104B1 (en) * 1998-06-16 2004-08-24 Koninklijke Philips Electronics N.V. Device for scanning an optical record carrier
WO2001035053A1 (fr) * 1999-11-12 2001-05-17 Armstrong Brian S Procedes et appareil de mesure d'image
JP2002025096A (ja) * 2000-07-07 2002-01-25 Matsushita Electric Ind Co Ltd 半導体光源、光ピックアップヘッド装置及び情報記録再生装置
JP2003045051A (ja) * 2001-07-31 2003-02-14 Pioneer Electronic Corp 情報記録再生装置
WO2003032085A2 (fr) * 2001-10-10 2003-04-17 Accent Optical Technologies, Inc. Determination du centre d'un point focal par analyse croisee
KR100489431B1 (ko) * 2002-06-28 2005-05-12 학교법인연세대학교 스캔식 위상천이 3차원 형상측정 장치 및 측정 방법
US7230722B2 (en) * 2005-10-19 2007-06-12 University Of Maryland Shadow moire using non-zero talbot distance
EP2058630A1 (fr) * 2007-11-12 2009-05-13 FAGOR, S.Coop. Tête de lecture pour dispositif de mesure optoélectronique
CN101984767B (zh) * 2008-01-21 2014-01-29 普莱姆森斯有限公司 用于使零级减少的光学设计
US20090245068A1 (en) * 2008-03-31 2009-10-01 Panasonic Corporation Optical pickup device and optical disc drive
CN112011282B (zh) * 2020-08-17 2021-06-29 深圳市方胜光学材料科技有限公司 一种3d保护膜及其制备工艺
CN113687492A (zh) * 2021-08-17 2021-11-23 深圳市卡提列光学技术有限公司 自动调焦系统

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL172202C (nl) * 1971-03-11 1983-07-18 Philips Nv Inrichting voor het uitlezen van een plaatvormige informatiedrager bevattende in optische vorm gecodeerde beeld- en/of geluidssignalen.
US3783270A (en) * 1971-05-19 1974-01-01 Olympus Optical Co Focus indicating devices
NL7907216A (nl) * 1979-09-28 1981-03-31 Philips Nv Optisch fokusfout-detektiestelsel.
IL63264A (en) * 1980-11-04 1986-07-31 Israel Atomic Energy Comm Topographical mapping system and method
US4428643A (en) * 1981-04-08 1984-01-31 Xerox Corporation Optical scanning system with wavelength shift correction
JPH0675297B2 (ja) * 1981-08-28 1994-09-21 株式会社日立製作所 光学的情報記録再生装置
US4604739A (en) * 1984-04-16 1986-08-05 International Business Machines Corporation Optical focus detection employing rotated interference patterns
EP0177737A3 (en) * 1984-08-28 1988-07-06 Fuji Photo Film Co., Ltd. Optical memory disk and track access therefor

Also Published As

Publication number Publication date
JPS6332730A (ja) 1988-02-12
AU7576687A (en) 1988-01-21
US4800547A (en) 1989-01-24
AU597087B2 (en) 1990-05-24
EP0253442A1 (fr) 1988-01-20

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