KR890023594U - Laser scanning device using hologram - Google Patents

Laser scanning device using hologram

Info

Publication number
KR890023594U
KR890023594U KR2019880008468U KR880008468U KR890023594U KR 890023594 U KR890023594 U KR 890023594U KR 2019880008468 U KR2019880008468 U KR 2019880008468U KR 880008468 U KR880008468 U KR 880008468U KR 890023594 U KR890023594 U KR 890023594U
Authority
KR
South Korea
Prior art keywords
hologram
scanning device
laser scanning
laser
scanning
Prior art date
Application number
KR2019880008468U
Other languages
Korean (ko)
Other versions
KR930004911Y1 (en
Inventor
양근영
Original Assignee
주식회사 금성사
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 주식회사 금성사 filed Critical 주식회사 금성사
Priority to KR2019880008468U priority Critical patent/KR930004911Y1/en
Publication of KR890023594U publication Critical patent/KR890023594U/en
Application granted granted Critical
Publication of KR930004911Y1 publication Critical patent/KR930004911Y1/en

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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
    • 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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127—Lasers; Multiple laser arrays
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
KR2019880008468U 1988-05-31 1988-05-31 Laser device of disk KR930004911Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019880008468U KR930004911Y1 (en) 1988-05-31 1988-05-31 Laser device of disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019880008468U KR930004911Y1 (en) 1988-05-31 1988-05-31 Laser device of disk

Publications (2)

Publication Number Publication Date
KR890023594U true KR890023594U (en) 1989-12-04
KR930004911Y1 KR930004911Y1 (en) 1993-07-26

Family

ID=19275926

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019880008468U KR930004911Y1 (en) 1988-05-31 1988-05-31 Laser device of disk

Country Status (1)

Country Link
KR (1) KR930004911Y1 (en)

Also Published As

Publication number Publication date
KR930004911Y1 (en) 1993-07-26

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Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
LAPS Lapse due to unpaid annual fee