FR2238209A1 - Beam scanner of record carrier - uses monochromatic light beam for recording of information on carrier - Google Patents

Beam scanner of record carrier - uses monochromatic light beam for recording of information on carrier

Info

Publication number
FR2238209A1
FR2238209A1 FR7425114A FR7425114A FR2238209A1 FR 2238209 A1 FR2238209 A1 FR 2238209A1 FR 7425114 A FR7425114 A FR 7425114A FR 7425114 A FR7425114 A FR 7425114A FR 2238209 A1 FR2238209 A1 FR 2238209A1
Authority
FR
France
Prior art keywords
carrier
light beams
mirror
recording
information
Prior art date
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.)
Granted
Application number
FR7425114A
Other languages
French (fr)
Other versions
FR2238209B1 (en
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Publication of FR2238209A1 publication Critical patent/FR2238209A1/en
Application granted granted Critical
Publication of FR2238209B1 publication Critical patent/FR2238209B1/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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
    • G11B7/08564—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements using galvanomirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/32—Holograms used as optical elements
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/113—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using oscillating or rotating mirrors
    • H04N1/1135—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using oscillating or rotating mirrors for the main-scan 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
    • G11B7/12—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
    • G11B7/1372—Lenses
    • G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Holo Graphy (AREA)
  • Laser Beam Printer (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Dot-Matrix Printers And Others (AREA)

Abstract

A light source typically a laser generates parallel monochromatic light beams. The scanning mirror rotates or swings round an axis and is positioned in the path of the light beams. An optical element between the light source and the scanning mirror converges the light beams only in the direction of the axis of the mirror, so that a linear light source is produced on the face of the mirror. A hologram is formed in the beam path of the divergent light beams which are reflected from the face of the mirror. The light beams converge in a light spot which moves in a straight line.
FR7425114A 1973-07-18 1974-07-18 Beam scanner of record carrier - uses monochromatic light beam for recording of information on carrier Granted FR2238209A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8154873A JPS562682B2 (en) 1973-07-18 1973-07-18

Publications (2)

Publication Number Publication Date
FR2238209A1 true FR2238209A1 (en) 1975-02-14
FR2238209B1 FR2238209B1 (en) 1976-10-22

Family

ID=13749334

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7425114A Granted FR2238209A1 (en) 1973-07-18 1974-07-18 Beam scanner of record carrier - uses monochromatic light beam for recording of information on carrier

Country Status (3)

Country Link
JP (1) JPS562682B2 (en)
DE (1) DE2434414A1 (en)
FR (1) FR2238209A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2284127A1 (en) * 1974-09-04 1976-04-02 Fuji Photo Film Co Ltd LIGHT BEAM SWEEPING DEVICE

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59202410A (en) * 1983-04-30 1984-11-16 Toppan Printing Co Ltd Holographic lens and its manufacture
JPS6124337U (en) * 1984-07-18 1986-02-13 ニコルマ−ケテイング株式会社 Rear speaker of hatchback type passenger car
JP2551015B2 (en) * 1987-08-07 1996-11-06 東レ株式会社 Manufacturing method of special bulky yarn
KR940007282B1 (en) * 1991-07-03 1994-08-12 주식회사 금성사 Optical system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2284127A1 (en) * 1974-09-04 1976-04-02 Fuji Photo Film Co Ltd LIGHT BEAM SWEEPING DEVICE

Also Published As

Publication number Publication date
JPS562682B2 (en) 1981-01-21
JPS5029048A (en) 1975-03-24
DE2434414A1 (en) 1975-02-06
FR2238209B1 (en) 1976-10-22

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Legal Events

Date Code Title Description
ST Notification of lapse