KR950024159A - Optical pickle - Google Patents

Optical pickle Download PDF

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Publication number
KR950024159A
KR950024159A KR1019940001165A KR19940001165A KR950024159A KR 950024159 A KR950024159 A KR 950024159A KR 1019940001165 A KR1019940001165 A KR 1019940001165A KR 19940001165 A KR19940001165 A KR 19940001165A KR 950024159 A KR950024159 A KR 950024159A
Authority
KR
South Korea
Prior art keywords
optical
light
optical fiber
recording medium
pick
Prior art date
Application number
KR1019940001165A
Other languages
Korean (ko)
Other versions
KR100243176B1 (en
Inventor
이철우
성평용
임경화
Original Assignee
김광호
삼성전자 주식회사
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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019940001165A priority Critical patent/KR100243176B1/en
Publication of KR950024159A publication Critical patent/KR950024159A/en
Application granted granted Critical
Publication of KR100243176B1 publication Critical patent/KR100243176B1/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
    • G11B7/08—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
    • G11B7/08—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
    • G11B7/0933—Details of stationary parts
    • 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
    • G11B7/13—Optical detectors therefor
    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • 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
    • 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
    • G11B7/1384—Fibre optics

Abstract

본 발명은 소정의 광기록 매체에 광학적으로 수록된 정보를, 일정한 광량을 그 광기록 매체에 조사하여 반사 광량의 변화를 검출하고 광량을 변조기로 변조하여 광기록 매체에 원하는 신호를 기록하며 또한 재생도 가능한 광 기록/재생 가능한 광 픽엎 장치에 관한 것이다.The present invention detects a change in the amount of reflected light by irradiating a predetermined amount of light onto the optical recording medium by optically recording information on a predetermined optical recording medium, modulates the amount of light with a modulator, and records a desired signal on the optical recording medium. A possible optical recording / reproducing optical pick up device is provided.

즉, 본 발명에 따른 광 픽엎 장치는, 수광부를 가동부 내에 배치하고, 고정부와의 광경로를 광 섬유라는 유연한 재료로 채택함으로써, 광 픽엎의 조립이 쉽고, 디스크와 수광부 사이의 거리가 짧아서 작동시 진동등에 의한 영향과 경시 변화가 적은 장점이 있으며, 작동시 진통에 의한 입사광축의 변동이 없고, 고정부와 가동부간의 거리를 임의로 조절할 수 있는 장점도 있다. 특히 본 발명에서는 광 섬유 자체의 일부를 이용하여 1/4 파장판을 형성하고 있어 이것이 위상지연자로서의 역할을 함으로써, 편광 변환이 가능한 장점이 있다.That is, the optical pick-up apparatus according to the present invention arranges the light receiving part in the movable part and adopts the optical path with the fixing part as a flexible material called optical fiber, so that the assembly of the optical pick is easy and the distance between the disk and the light receiving part is short. There is a merit that there is little influence over time and change due to vibration, etc., there is no change in the incident optical axis due to analgesic during operation, and there is an advantage that the distance between the fixed part and the movable part can be arbitrarily adjusted. Particularly, in the present invention, a quarter wave plate is formed by using a part of the optical fiber itself, and this serves as a phase retarder, so that polarization conversion is possible.

Description

광 픽엎 장침Optical pickle

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 따른 바람직한 실시예의 광픽엎 장치의 배치구성도,2 is a layout diagram of an optical pickup device according to a preferred embodiment of the present invention;

제3도는 본 발명에 따른 또 다른 실시예의 광픽엎 장치의 배치구성도,3 is a layout diagram of an optical pick up apparatus according to another embodiment of the present invention;

제4도는 제2도 실시예의 광픽엎 장치의 실제 배치구성도.4 is an actual arrangement of the optical pick-up apparatus of the second embodiment.

Claims (6)

고정 설치되고 광을 발생하는 고정 광학계와 기록 매체에 대해 이동 가능하게 설치되고 고정 광학계로부터 발생된 광을 기록 매체에 집속 투사하는 가동 광학계를 구비하는 광 픽엎 장치에 있어서, 광을 도파하는 광섬유를 구비하고, 상기 가동 광학계가 상기 기록 매체로 부터 반사되는 광을 수광하여 광전 변환하는 광 검출 소자를 포함하여 되는 것을 특징으로 하는 광픽엎 장치.An optical pick-up apparatus comprising a fixed optical system fixedly installed and movable optical system provided to be movable with respect to a recording medium and focusing projection of light generated from the fixed optical system onto the recording medium, comprising: an optical fiber for guiding light And a light detecting element for receiving the photoelectrically converted light by the movable optical system and reflected from the recording medium. 제1항에 있어서, 상기 광 섬유가 그 도파되는 광의 편광 각도를 유지하는 편광 유지부를 갖도록 설계된 것을 특징으로 하는 광 픽엎 장치.The optical pick-up apparatus according to claim 1, wherein the optical fiber is designed to have a polarization holding unit for maintaining a polarization angle of the waveguided light. 제2항에 있어서, 상기 광 섬유의 편광 유지부가 그 편광 방향을 조절할 수 있도록 설계된 것을 특징으로 하는 광 픽엎 장치.The optical pick-up apparatus according to claim 2, wherein the polarization retainer of the optical fiber is designed to adjust its polarization direction. 제1항에 있어서, 상기 광 섬유를 도파하는 광의 강도가 변조되도록 그 광 섬유의 어느 일단부를 가진시키기 위한 가진 수단이 더 구비된 것을 특징으로 하는 광 픽엎 장치.The optical pick-up apparatus according to claim 1, further comprising an excitation means for exciting one end of the optical fiber such that the intensity of light guiding the optical fiber is modulated. 제4항에 있어서, 상기 가진 수단이, 상기 광 섬유의 입력단에 입사되는 광을 집속하는 렌즈와 그 광 섬유의 입력단을 광축 방향으로 진동시키는 가진기를 구비하여 된 것을 특징으로 하는 광 픽엎 장치.The optical pick-up apparatus according to claim 4, wherein the excitation means comprises a lens for focusing light incident on the input end of the optical fiber and an exciter for vibrating the input end of the optical fiber in the optical axis direction. 제1항에 있어서, 상기 광 섬유로 부터 상기 고정 광학계로 전달되는 광의 수차를 제거하기 의하여, 핀홀을 갖는 어퍼쳐와, 그 광 섬유의 출력단으로 부터 광을 그 핀홀에 집속하는 렌즈를 더 구비하는 것을 특징으로 하는 광 픽엎 장치.The optical fiber of claim 1, further comprising: an aperture having a pinhole, and a lens for focusing light from the output end of the optical fiber to the pinhole by removing aberration of light transmitted from the optical fiber to the fixed optical system. Optical pick-up device, characterized in that. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940001165A 1994-01-22 1994-01-22 An optical pickup device KR100243176B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940001165A KR100243176B1 (en) 1994-01-22 1994-01-22 An optical pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940001165A KR100243176B1 (en) 1994-01-22 1994-01-22 An optical pickup device

Publications (2)

Publication Number Publication Date
KR950024159A true KR950024159A (en) 1995-08-21
KR100243176B1 KR100243176B1 (en) 2000-02-01

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Application Number Title Priority Date Filing Date
KR1019940001165A KR100243176B1 (en) 1994-01-22 1994-01-22 An optical pickup device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59140651A (en) * 1983-01-31 1984-08-13 Sharp Corp Optical disk device

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