KR890012276A - 홀로그램패턴변화에 의한 광헤드 구성방법 - Google Patents

홀로그램패턴변화에 의한 광헤드 구성방법 Download PDF

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Publication number
KR890012276A
KR890012276A KR1019890000082A KR890000082A KR890012276A KR 890012276 A KR890012276 A KR 890012276A KR 1019890000082 A KR1019890000082 A KR 1019890000082A KR 890000082 A KR890000082 A KR 890000082A KR 890012276 A KR890012276 A KR 890012276A
Authority
KR
South Korea
Prior art keywords
grating pattern
optical head
distance
grating
adjusting
Prior art date
Application number
KR1019890000082A
Other languages
English (en)
Inventor
와이 혼 리
Original Assignee
알.에이.드브리지
펜콤 인터내셔날 코오퍼레이션
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 알.에이.드브리지, 펜콤 인터내셔날 코오퍼레이션 filed Critical 알.에이.드브리지
Publication of KR890012276A publication Critical patent/KR890012276A/ko

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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
    • 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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • 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
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S359/00—Optical: systems and elements
    • Y10S359/90—Methods

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Holo Graphy (AREA)

Abstract

내용 없음.

Description

홀로그램패턴변화에 의한 광헤드 구성방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 본 발명의 방법을 사용하여 구성된 광헤드의 블럭도.
제 2 도는 제 1 도의 광헤드의 레이저다이오드와 광검출기에 대한 도면.
제 3 도는 토로이달렌즈의 초점면을 도시한 도면.

Claims (11)

  1. 광검출기상에 광비임을 집중시키는 회절격자를 가지며, 광헤드에 상기 광검출기를 장착하는 단계 ; 상기 회절격자의 위치로부터 상기 광검출기의 표면까지의 거리를 측정하는 단계 ; 상기 거리에서 일이상의 초점을 이룬 회절비임의 스포트를 발생하기 위해 상기 회절격자상에 격자패턴을 만드는 단계 ; 및 상기 위치에서 상기 광헤드에 상기 회절격자를 장착하는 단계로 구성되는 것을 특징으로 하는 광헤드 구성방법.
  2. 제 1 항에 있어서, 상기 격자패턴이 홀로그래픽 방법에 의해 만들어져 두개의 초점을 갖는 토로이달 렌즈처럼 보이게 하는 것을 특징으로 하는 광헤드의 구성방법.
  3. 제 2 항에 있어서, 상기 두개의 초점이 상기 광검출기 표면으로부터 거의 같은 거리에 있는 것을 특징으로 하는 광헤드 구성방법.
  4. 제 1 항에 있어서. 상기 거리의 초점면내에서 상기 비임을 경사지도록 하기 위해 상기 격자패턴을 조정하는 단계를 더 포함하는 것을 특징으로 하는 광헤드 구성방법.
  5. 제 4 항에 있어서, 상기 조정단계가 상기 격자패턴의 선형시프팅을 더 포함하는 것을 특징으로 하는 광헤드 구성방법.
  6. 제 2 항에 있어서, 상기 거리의 초점면내에서 상기 비임을 회전시키도록 상기 격자패턴을 조정하는 단계를 더 포함하는 것을 특징으로 하는 광헤드 구성방법.
  7. 제 6 항에 있어서, 상기 조정단계가 상기 광헤드의 광축주위로 상기 격자패턴을 회전시키는 것을 포함하는 것을 특징으로 하는 광헤드 구성방법.
  8. 제 1 항에 있어서, 상기 격자패턴이 복프리즘을 부착한 렌즈와 같이 보이도록 홀로그래픽 방법으로 만들어지는 것을 특징으로 하는 광헤드 구성방법.
  9. 제 8 항에 있어서, 상기 거리의 초점면내에서 상기 비임을 회전시키도록 상기 격자패턴 조정단계를 더 포함하는 것을 특징으로 하는 광헤드 구성방법.
  10. 제 8 항에 있어서, 상기 조정단계가 상기 광헤드의 광축주위로 상기 격자패턴을 회전시키는 것을 포함하는 것을 특징으로 하는 광헤드 구성방법.
  11. 제 1 항의 방법에 의해 생산된 생산품.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890000082A 1988-01-20 1989-01-06 홀로그램패턴변화에 의한 광헤드 구성방법 KR890012276A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US141,460 1980-04-18
US07/141,460 US4905216A (en) 1986-12-04 1988-01-20 Method for constructing an optical head by varying a hologram pattern

Publications (1)

Publication Number Publication Date
KR890012276A true KR890012276A (ko) 1989-08-25

Family

ID=22495795

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890000082A KR890012276A (ko) 1988-01-20 1989-01-06 홀로그램패턴변화에 의한 광헤드 구성방법

Country Status (4)

Country Link
US (1) US4905216A (ko)
EP (1) EP0325103A3 (ko)
JP (2) JP2824074B2 (ko)
KR (1) KR890012276A (ko)

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Also Published As

Publication number Publication date
EP0325103A3 (en) 1991-08-28
EP0325103A2 (en) 1989-07-26
JP2824074B2 (ja) 1998-11-11
JPH01285034A (ja) 1989-11-16
JPH1173655A (ja) 1999-03-16
US4905216A (en) 1990-02-27

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