KR840002561A - Optical head unit - Google Patents

Optical head unit Download PDF

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Publication number
KR840002561A
KR840002561A KR1019820004975A KR820004975A KR840002561A KR 840002561 A KR840002561 A KR 840002561A KR 1019820004975 A KR1019820004975 A KR 1019820004975A KR 820004975 A KR820004975 A KR 820004975A KR 840002561 A KR840002561 A KR 840002561A
Authority
KR
South Korea
Prior art keywords
support member
optical head
head device
hologram
cylindrical support
Prior art date
Application number
KR1019820004975A
Other languages
Korean (ko)
Other versions
KR880002635B1 (en
Inventor
히로시(외1) 오오끼
Original Assignee
오오가 노리오
소니 가부시끼 가이샤
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 오오가 노리오, 소니 가부시끼 가이샤 filed Critical 오오가 노리오
Publication of KR840002561A publication Critical patent/KR840002561A/en
Application granted granted Critical
Publication of KR880002635B1 publication Critical patent/KR880002635B1/en

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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
    • G11B7/12—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
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
    • 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
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0937—Piezo-electric actuators
    • 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

Abstract

내용 없음.No content.

Description

광학 헤드 장치Optical head unit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명에 의한 광학헤드의 한 실예를 도시하는 개략단면도.2 is a schematic cross-sectional view showing one example of an optical head according to the present invention.

제6도를 제2도에 도시된 광학헤드 장치를 이동 가능하게 지지하는 제어 장착부의 평면도.6 is a plan view of a control mounting portion for movably supporting the optical head device shown in FIG.

제9도는 제2의 광학헤드 장치를 이동할 수 있게 지지하는 제어장착부.9 is a control mounting portion for movably supporting a second optical head device.

Claims (8)

원통형 지지부재와, 이 지지부재에 수납되어 레이저 광비임을 방출시키기 위한 반도체 레이저를 구비하여 광비임을 발생 및 제어하기 위한 광학헤드 장치에 있어서 반도체 레이저에 의해 방출된 레이저 광비임이 원통형 지지부재의 축을 따른 방향으로 홀로그램을 통해 통과하도록 이 홀로그램이 한점으로부터 발산하는 구연광파를 원통형 지지부재 외축의 다른 점에서 집속하는 다른 구면 광파로 변환시키는 작용을 하는 것을 특징으로 하는 광학헤드 장치.In an optical head device for generating and controlling an optical beam having a cylindrical support member and a semiconductor laser housed in the support member for emitting a laser light beam, the laser light beam emitted by the semiconductor laser is directed along the axis of the cylindrical support member. An optical head device, characterized in that for acting to pass through the hologram, the hologram emitted from one point into another spherical light wave focused at different points on the outer axis of the cylindrical support member. 제1항에 의한 광학헤드 장치에 있어서, 반도체 레이저와 홀로그램 사이의 위치에서 지지부재에 수납된 비임 스플리터 수단과 지지부재에 부착되어 비임스플리터에 의해 분할된 레이저 광비임을 수광하는 광검출기를 더 구비하고 있는 것을 특징으로 하는 광학헤드장치.An optical head device according to claim 1, further comprising: a beam splitter means housed in the support member at a position between the semiconductor laser and the hologram and a photodetector attached to the support member to receive the laser light beam split by the beam splitter; There is an optical head device. 제2항에 의한 광학헤드 장치에 있어서, 원통형 지지부재를 보유지지하기 위한 장착수단과 이 장착수단을 적어도 다른 두 방향으로 전자기적으로 이동시키기 위한 구동수단을 더 구비하고 있는 것을 특징으로 하는 광학헤드 장치.An optical head device according to claim 2, further comprising mounting means for holding a cylindrical support member and driving means for electromagnetically moving the mounting means in at least two different directions. Device. 제3항에 의한 광학헤드 장치에 있어서, 구동수단이 장착수단을 원통형 지지부재의 축을 다른 제1방향과 이 제1방향과 수직인 제2방향의 양방향으로 전자기적으로 이동시키는 것을 특징으로 하는 광학헤드 장치.An optical head device according to claim 3, wherein the driving means moves the mounting means electromagnetically in both the first direction and the second direction perpendicular to the first direction of the cylindrical support member. Head device. 제1항에 의한 광학헤드 장치에 있어서, 반도체 레이저가 제1압전소자를 통해 원통형 지지부재에 부착되고, 홀로그램은 제2압전소자를 통해 원통형 지지에 부착되는 것을 특징으로 하는 광학헤드 장치.The optical head device according to claim 1, wherein the semiconductor laser is attached to the cylindrical support member through the first piezoelectric element, and the hologram is attached to the cylindrical support through the second piezoelectric element. 제5항에 의한 광학헤드 장치에 있어서, 레이지 광비임은 홀로그램을 통해 지지부재로부터 방출되어 지지부재의 외측에서 반사되며 홀로그램을 통해 지지부재를 다시 입사되고, 반도체 레이저는 지지부재로 재입사하는 레이저 광비임을 수광하는 것을 특징으로 하는 광학헤드 장치.In the optical head device according to claim 5, the laser beam is emitted from the support member through the hologram, is reflected from the outside of the support member, and enters the support member again through the hologram, and the semiconductor laser reenters the support member. An optical head device, characterized in that for receiving a light beam. 제1항에 의한 광학헤드 장치에 있어서, 레이저 광비임은 홀로그램을 통해 지지부재로부터 방출되어 지지부재의 외측에서 반사되며 홀로그램을 통해 다시 지지부재로 입사되고 반도체 레이저에 대해 홀로그램에 의해 투사되는 것을 특징으로 하는 광학헤드 장치.The optical head device according to claim 1, wherein the laser light beam is emitted from the support member through the hologram, reflected from the outside of the support member, entered back into the support member through the hologram, and is projected by the hologram against the semiconductor laser. An optical head device. 제7항에 의한 광학헤드 장치에 있어서, 원통형 지지부재를 보유지지하기 위한 장착수단과 이 장착수단을 포커스 서보제어에 대해서는 원통형 지지부재의 축방향으로 이동시키며, 트래킹 및 시간축 서보제어에 대해서는 축에 수직인 방향으로 수직이동 시키는 구동수단을 더 구비하고 있는 것을 특징으로 하는 광학헤드 장치.An optical head apparatus according to claim 7, wherein the mounting means for holding the cylindrical support member and the mounting means are moved in the axial direction of the cylindrical support member for focus servo control, and in the axis for tracking and time axis servo control. And a driving means for vertically moving in the vertical direction. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR8204975A 1981-11-04 1982-11-04 Optical head apparatus KR880002635B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP176749 1981-11-04
JP56176749A JPS5880139A (en) 1981-11-04 1981-11-04 Optical head

Publications (2)

Publication Number Publication Date
KR840002561A true KR840002561A (en) 1984-07-02
KR880002635B1 KR880002635B1 (en) 1988-12-07

Family

ID=16019131

Family Applications (1)

Application Number Title Priority Date Filing Date
KR8204975A KR880002635B1 (en) 1981-11-04 1982-11-04 Optical head apparatus

Country Status (9)

Country Link
JP (1) JPS5880139A (en)
KR (1) KR880002635B1 (en)
AT (1) AT376510B (en)
AU (1) AU556305B2 (en)
CA (1) CA1177165A (en)
DE (1) DE3240734C2 (en)
FR (1) FR2519458B1 (en)
GB (1) GB2109583B (en)
NL (1) NL8204248A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8304212A (en) * 1983-12-07 1984-10-01 Philips Nv SINGLE COLLIMATOR LENS WITH AN ASPHERIC SURFACE.
CA1258906A (en) * 1985-04-22 1989-08-29 Hiroshi Oinoue Semiconductor laser apparatus for optical head
JPS61269235A (en) * 1985-05-24 1986-11-28 Omron Tateisi Electronics Co Optical information processing device
JPS61269233A (en) * 1985-05-24 1986-11-28 Omron Tateisi Electronics Co Optical information processing device
JPH0687099B2 (en) * 1986-10-08 1994-11-02 富士通株式会社 Laser optical scanning device
CA2079620A1 (en) * 1991-10-25 1993-04-26 Roeland M. T. Hekker Holographic elements for an optical recording system
US5272690A (en) * 1992-03-05 1993-12-21 International Business Machines Corporation Hologram element system
WO1996030903A2 (en) * 1995-03-29 1996-10-03 Philips Electronics N.V. Optical unit comprising a radiation source, a detector and a grating, and scanning device including the optical unit
GB0408383D0 (en) 2004-04-15 2004-05-19 Koninkl Philips Electronics Nv A radio network and a method of operating a radio network

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003059A (en) * 1974-02-07 1977-01-11 Canon Kabushiki Kaisha Optical recorder having focus controlling means
NL176315C (en) * 1976-05-12 1985-03-18 Philips Nv OPTICAL SCANNER.
NL7608561A (en) * 1976-08-02 1978-02-06 Philips Nv OPTICAL READING UNIT FOR SCANNING A RECORD BEARING WITH A RADIATION-REFLECTING INFORMATION STRUCTURE.
CA1091966A (en) * 1976-10-15 1980-12-23 Chiaki Kojima Apparatus for reading signals recorded on a record carrier
US4245882A (en) * 1977-11-04 1981-01-20 Environmental Research Institute Of Michigan Doubly modulated on-axis thick hologram optical element
NL7713711A (en) * 1977-12-12 1979-06-14 Philips Nv OPTICAL READING UNIT FOR READING A MOVING DATA CARRIER, IN PARTICULAR FOR READING A VIDEO RECORD.
JPS54109801A (en) * 1978-02-17 1979-08-28 Toshiba Corp Optical reader
JPS5573934A (en) * 1978-11-20 1980-06-04 Mansei Kogyo Kk Reader for optical information
JPS55163566A (en) * 1979-06-05 1980-12-19 Sony Corp Hologram lens and its production and optical system signal using this hologram lens
JPS5647933A (en) * 1979-09-25 1981-04-30 Sony Corp Optical signal head
JPS5680836A (en) * 1979-12-07 1981-07-02 Seiko Instr & Electronics Ltd Optical information reader

Also Published As

Publication number Publication date
GB2109583A (en) 1983-06-02
AU9007182A (en) 1983-05-12
DE3240734C2 (en) 1995-11-30
FR2519458B1 (en) 1991-07-19
AT376510B (en) 1984-11-26
CA1177165A (en) 1984-10-30
GB2109583B (en) 1985-07-17
DE3240734A1 (en) 1983-05-19
JPS5880139A (en) 1983-05-14
AU556305B2 (en) 1986-10-30
ATA403082A (en) 1984-04-15
FR2519458A1 (en) 1983-07-08
NL8204248A (en) 1983-06-01
KR880002635B1 (en) 1988-12-07

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