KR970029388A - All-in-one optical pick-up device - Google Patents

All-in-one optical pick-up device Download PDF

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Publication number
KR970029388A
KR970029388A KR1019950043812A KR19950043812A KR970029388A KR 970029388 A KR970029388 A KR 970029388A KR 1019950043812 A KR1019950043812 A KR 1019950043812A KR 19950043812 A KR19950043812 A KR 19950043812A KR 970029388 A KR970029388 A KR 970029388A
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KR
South Korea
Prior art keywords
silicon substrate
light
optical
optical pick
integrally formed
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Application number
KR1019950043812A
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Korean (ko)
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KR0167929B1 (en
Inventor
최양오
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배순훈
대우전자 주식회사
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Priority to KR1019950043812A priority Critical patent/KR0167929B1/en
Publication of KR970029388A publication Critical patent/KR970029388A/en
Application granted granted Critical
Publication of KR0167929B1 publication Critical patent/KR0167929B1/en

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    • 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
    • G11B7/1367—Stepped phase 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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)

Abstract

본 발명은 광학 데이타기록 매체에 신호를 기록하고, 그 기록된 정보를 전기신호로 재생시키는 광 픽-업장치에 관한 것으로서, 특히 다수의 광학 소자를 일체로 집적형성하여 조립 및 조정의 용이성과 경박단소화에 기여할 수 있도록 하는 일체형 광 픽-업장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical pick-up apparatus for recording a signal on an optical data recording medium and reproducing the recorded information as an electric signal. In particular, the optical pick-up apparatus is integrated and formed by integrating a plurality of optical elements. An integrated optical pick-up device for contributing to shortening.

이를 위하여 광학 데이타기록 매체에 신호를 기록하고, 그 기록된 정보를 전기신호로 재생시키는 광 픽-업장치에 있어서, 다수의 광학소자가 안치되는 실리콘기판, 소정의 파장으로 레이저 빔을 발생하는 레이저 다이오드, 상기 실리콘기판 일측 상부에 집적 형성되어 상기 레이저 다이오드가 안치되며 방열기능을 갖는 지지체, 상기 실리콘기판의 타측 상부에 집적 형성되어 상기 레이저 다이오드로부터 방출되는 빔을 일정한 비의 반사광과 투과광으로 분리하는 빔 스플리트, 상기 지지체에 소정간격을 두고 배치되며 상기 실리콘기판 상부에 집적 형성되어 상기 빔 스플리트를 통해 되돌아오는 디스크의 광정보를 검출하는 광검출기, 상기 빔 스플리트의 일측면에 일체로 형성되어 이상광선은 투과하고. 상광선은 회절시켜 디스크상의 정보를 검출하게 하는 복굴절 회절격자, 상기 빔 스플리트의 상부에 일체로 형성되어 이상광선은 상광선로, 상광선은 이상광선으로 변화하는 파장변환부로 구성된 것이다.To this end, in an optical pick-up apparatus for recording a signal on an optical data recording medium and reproducing the recorded information as an electrical signal, a silicon substrate on which a plurality of optical elements are placed, a laser generating a laser beam at a predetermined wavelength A diode, formed integrally on one side of the silicon substrate, and having the laser diode placed therein, having a heat dissipation function, integrally formed on the other side of the silicon substrate, separating the beam emitted from the laser diode into reflected light and transmitted light of a constant ratio. A beam splitter is disposed at a predetermined interval on the support, and is formed integrally on the silicon substrate to detect optical information of a disk returning through the beam split, and integrally formed on one side of the beam split. Abnormal light is transmitted through. The image beam is composed of a birefringent diffraction grating which diffracts and detects information on the disc, and a wavelength conversion portion which is formed integrally on the upper portion of the beam split so that the abnormal light beam is an image beam and the image beam is an abnormal beam.

Description

일체형 광 픽-업장치All-in-one optical pick-up device

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

제2도는 본 발명에 일체형 광 픽-업장치의 구성도.2 is a block diagram of an integrated optical pick-up device of the present invention.

Claims (3)

광학 데이타기록 매체에 신호를 기록하고, 그 기록된 정보를 전기신호로 재생시키는 광 픽-업장치에 있어서, 다수의 광학소자가 안치되는 실리콘기판(61), 소정의 파장으로 레이저 빔을 발생하는 레이저 다이오드(63). 상기 실리콘기판(61) 일측 상부에 집적 형성되어 상기 레이저 다이오드(63)가 안치되며 방열기능을 갖는 지지체(62), 상기 실리콘기판(61)의 타측상부에 집적 형성되어 상기 레이저 다이오드(63)로부터 방출되는 빔을 일정한 비의 반사광과 투과광으로 분리하는 빔 스플리트(64), 상기 지지체(62)에 소정간격을 두고 배치되며 상기 실리콘기판(61) 상부에 집적 형성되어 상기 빔 스플리트(64)를 통해 되돌아오는 디스크의 광정보를 검출하는 광검출기(66), 상기 빔 스플리트(64)의 일측면에 일체로 형성되어 이상광선(S파)은 투과하고, 상광선(P파)은 회절시켜 디스크상의 정보를 검출하게 하는 복굴절 회절격자(67), 상기 빔 스플리트(64)의 상부에 일체로 형성되어 이상광선(S파)은 상광선(P파)로, 상광선(P파)는 이상광선(S파)으로 변화하는 파장변환부(65)로 구성된 일체형 광 픽-업장치.An optical pick-up apparatus for recording a signal on an optical data recording medium and reproducing the recorded information as an electrical signal, comprising: a silicon substrate 61 on which a plurality of optical elements are placed, for generating a laser beam at a predetermined wavelength; Laser diode 63. The silicon diode 61 is integrally formed on one side of the silicon substrate 61 so that the laser diode 63 is placed therein and has a heat dissipation support 62, and the silicon substrate 61 is integrally formed on the other side of the silicon substrate 61 from the laser diode 63. A beam split 64 which separates the emitted beam into reflected light and transmitted light of a constant ratio, and is disposed at a predetermined interval on the support 62 and is integrally formed on the silicon substrate 61 to form the beam split 64. The photodetector 66 which detects the optical information of the disk returning through the disk, is integrally formed on one side of the beam split 64 so that the abnormal light (S wave) is transmitted, and the normal light (P wave) is diffracted The birefringent diffraction grating 67 and the beam split 64 are integrally formed so as to detect the information on the disc so that the abnormal light beam S is the normal light P wave, and the normal light P wave. Is composed of a wavelength conversion section 65 that changes to an abnormal light (S wave) Optical pick-up device. 제1항에 있어서. 복굴절 회절격자(67)는, 글래스(67a)에 안식향산(安息香酸)에 의한 광자(Photon) 교환으로 생성되는 교환영역(67a)과 비교환영역(67b)을 일정한 간격으로 격자형태로 형성하고, 상기 교환영역(67a) 상면에 교환영역(67a)과 비교환영역(67b)을 통과하는 광의 위상차를 보상하기 위한 소정 두께의 위상보상막(67b)을 형성하여 구성된 것을 특징으로 하는 일체형 광 픽-업장치.The method of claim 1. The birefringent diffraction grating 67 forms, on the glass 67a, an exchange region 67a and a non-exchange region 67b generated by photon exchange by benzoic acid in a lattice form at regular intervals. An integrated optical pick-up configured to form a phase compensation film 67b having a predetermined thickness to compensate for the phase difference between the light passing through the exchange area 67a and the non-exchange area 67b on the upper surface of the exchange area 67a; Up device. 제1항에 있어서. 상기 파장변환부(65)는 λ/4 플레이트로 구성된 것을 특징으로 하는 일체형 광 픽 -업장치.The method of claim 1. The wavelength conversion unit (65) is an integrated optical pick-up device, characterized in that consisting of λ / 4 plate. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950043812A 1995-11-27 1995-11-27 Optical pick-up device in a body type KR0167929B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950043812A KR0167929B1 (en) 1995-11-27 1995-11-27 Optical pick-up device in a body type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950043812A KR0167929B1 (en) 1995-11-27 1995-11-27 Optical pick-up device in a body type

Publications (2)

Publication Number Publication Date
KR970029388A true KR970029388A (en) 1997-06-26
KR0167929B1 KR0167929B1 (en) 1999-03-20

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KR1019950043812A KR0167929B1 (en) 1995-11-27 1995-11-27 Optical pick-up device in a body type

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KR0167929B1 (en) 1999-03-20

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