NL8502835A - Inrichting voor het met optische straling aftasten van een informatievlak. - Google Patents

Inrichting voor het met optische straling aftasten van een informatievlak. Download PDF

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Publication number
NL8502835A
NL8502835A NL8502835A NL8502835A NL8502835A NL 8502835 A NL8502835 A NL 8502835A NL 8502835 A NL8502835 A NL 8502835A NL 8502835 A NL8502835 A NL 8502835A NL 8502835 A NL8502835 A NL 8502835A
Authority
NL
Netherlands
Prior art keywords
sub
radiation
detectors
grid
grating
Prior art date
Application number
NL8502835A
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 NL8502835A priority Critical patent/NL8502835A/nl
Priority to US06/817,190 priority patent/US4665310A/en
Priority to EP86201765A priority patent/EP0219908B1/de
Priority to DE8686201765T priority patent/DE3674136D1/de
Priority to ES86201765T priority patent/ES2018158B3/es
Priority to AU63917/86A priority patent/AU584046B2/en
Priority to JP61243281A priority patent/JPH0743834B2/ja
Priority to CA000520566A priority patent/CA1263183A/en
Priority to KR1019860008682A priority patent/KR950008949B1/ko
Publication of NL8502835A publication Critical patent/NL8502835A/nl

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
    • G02B27/10—Beam splitting or combining systems
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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
    • G02B27/10—Beam splitting or combining systems
    • G02B27/16—Beam splitting or combining systems used as aids for focusing
    • 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
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/4233—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive element [DOE] contributing to a non-imaging application
    • G02B27/4238—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive element [DOE] contributing to a non-imaging application in optical recording or readout devices
    • 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
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/44—Grating systems; Zone plate systems
    • 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
    • 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
    • G11B7/0916—Foucault or knife-edge 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
    • 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
    • G11B7/094—Methods and circuits for servo offset compensation
NL8502835A 1985-10-17 1985-10-17 Inrichting voor het met optische straling aftasten van een informatievlak. NL8502835A (nl)

Priority Applications (9)

Application Number Priority Date Filing Date Title
NL8502835A NL8502835A (nl) 1985-10-17 1985-10-17 Inrichting voor het met optische straling aftasten van een informatievlak.
US06/817,190 US4665310A (en) 1985-10-17 1985-12-26 Apparatus for optically scanning an information plane wherein a diffraction grating splits the beam into two sub-beams
EP86201765A EP0219908B1 (de) 1985-10-17 1986-10-13 Gerät zur optischen Abtastung einer Informationsebene
DE8686201765T DE3674136D1 (de) 1985-10-17 1986-10-13 Geraet zur optischen abtastung einer informationsebene.
ES86201765T ES2018158B3 (es) 1985-10-17 1986-10-13 Analizador optico de informacion plana
AU63917/86A AU584046B2 (en) 1985-10-17 1986-10-15 Apparatus for optically scanning an information plane wherein a diffraction grating splits the beam into two sub-beams
JP61243281A JPH0743834B2 (ja) 1985-10-17 1986-10-15 光学走査装置
CA000520566A CA1263183A (en) 1985-10-17 1986-10-15 Apparatus for optically scanning an information plane
KR1019860008682A KR950008949B1 (ko) 1985-10-17 1986-10-16 광주사장치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8502835 1985-10-17
NL8502835A NL8502835A (nl) 1985-10-17 1985-10-17 Inrichting voor het met optische straling aftasten van een informatievlak.

Publications (1)

Publication Number Publication Date
NL8502835A true NL8502835A (nl) 1987-05-18

Family

ID=19846726

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8502835A NL8502835A (nl) 1985-10-17 1985-10-17 Inrichting voor het met optische straling aftasten van een informatievlak.

Country Status (9)

Country Link
US (1) US4665310A (de)
EP (1) EP0219908B1 (de)
JP (1) JPH0743834B2 (de)
KR (1) KR950008949B1 (de)
AU (1) AU584046B2 (de)
CA (1) CA1263183A (de)
DE (1) DE3674136D1 (de)
ES (1) ES2018158B3 (de)
NL (1) NL8502835A (de)

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JP2683293B2 (ja) * 1990-06-19 1997-11-26 松下電器産業株式会社 光ヘッド装置
JP2684822B2 (ja) * 1990-06-06 1997-12-03 松下電器産業株式会社 光ピックアップヘッド装置
JPH0460933A (ja) * 1990-06-26 1992-02-26 Matsushita Electric Ind Co Ltd 光ピックアップヘッド装置
NL9002841A (nl) * 1990-12-21 1992-07-16 Philips Nv Werkwijze en inrichting voor het langs optische weg inschrijven, uitlezen, en wissen van een meervlaks registratiedrager, en registratiedrager geschikt voor deze werkwijze en inrichting.
JP2870236B2 (ja) * 1991-07-22 1999-03-17 日本電気株式会社 光学式記録再生装置
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Also Published As

Publication number Publication date
JPH0743834B2 (ja) 1995-05-15
CA1263183A (en) 1989-11-21
EP0219908B1 (de) 1990-09-12
EP0219908A1 (de) 1987-04-29
DE3674136D1 (de) 1990-10-18
AU6391786A (en) 1987-04-30
US4665310A (en) 1987-05-12
KR870004426A (ko) 1987-05-09
KR950008949B1 (ko) 1995-08-09
AU584046B2 (en) 1989-05-11
JPS6297141A (ja) 1987-05-06
ES2018158B3 (es) 1991-04-01

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