KR950015261A - Optical pickup with parabolic reflector - Google Patents

Optical pickup with parabolic reflector Download PDF

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Publication number
KR950015261A
KR950015261A KR1019930023879A KR930023879A KR950015261A KR 950015261 A KR950015261 A KR 950015261A KR 1019930023879 A KR1019930023879 A KR 1019930023879A KR 930023879 A KR930023879 A KR 930023879A KR 950015261 A KR950015261 A KR 950015261A
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KR
South Korea
Prior art keywords
laser beam
reflected
reflector
light
laser
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Application number
KR1019930023879A
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Korean (ko)
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KR960006099B1 (en
Inventor
한만준
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배순훈
대우전자 주식회사
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Priority to KR1019930023879A priority Critical patent/KR960006099B1/en
Publication of KR950015261A publication Critical patent/KR950015261A/en
Application granted granted Critical
Publication of KR960006099B1 publication Critical patent/KR960006099B1/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
    • G11B7/1362—Mirrors

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

Abstract

본 발명은 팔라볼라 반사경을 갖춘 광픽업장치에 관한 것으로, 레이저비임을 발생하는 발광소자와 수광소자의 일체형인 홀로그램 레이저다이오드(50)와 이 홀로그램 레이저다이오드(50)로부터 방사되는 레이저비임을 3비임으로 분할하여 반사시키는 미러회절격자(60), 중앙에 상기 홀로그램 레이저다이오드(50)가 장착되고 상기 미러회절격자(60)에서 3분할되어 반사되는 레이저비임을 디스크(30)의 표면상에 집광하고 그 디스크(30)의 표면에서 반사되는 반사광을 상기 미러회절격자(60)를 통해 상기 홀로그램 레이저다이오드(50)에 접속되도록 하는 파라볼라 반사경(40)을 갖추어 구성되고, 상기 파라볼라 반사경(40)은 그 하측에 제공되는 가동코일(70)에 의해 변위되어 상기 레이저비임의 반사각이 가변되는 반구형상으로 형성되어 간단한 구조의 광픽업장치를 제공하는 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical pickup apparatus having a Pallabola reflector, wherein the laser beam radiated from the hologram laser diode 50 and the hologram laser diode 50 that are integrated with the light emitting element and the light receiving element generating the laser beam are 3 beams. The mirror diffraction grating 60 is divided into and reflected to the center, and the hologram laser diode 50 is mounted in the center, and the laser beam is split on the mirror diffraction grating 60 and reflected on the surface of the disc 30. A parabola reflector 40 is configured to connect the reflected light reflected from the surface of the disk 30 to the hologram laser diode 50 through the mirror diffraction grating 60, and the parabola reflector 40 Optical pickup device having a simple structure is formed in a hemispherical shape which is displaced by the movable coil 70 provided on the lower side and the reflection angle of the laser beam is varied. To provide.

Description

파라볼라 반사경을 갖춘 광픽업장치Optical pickup with parabolic reflector

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

제3도는 본 발명에 따른 파라볼라 반사경을 갖춘 광픽업장치의 구성을 설명하는 개략사시도.3 is a schematic perspective view illustrating a configuration of an optical pickup apparatus having a parabolic reflector according to the present invention.

제4도는 본 발명에 따른 파라볼라 반사경을 갖춘 광픽업장치의 동작을 설명하는 단면도이다.4 is a cross-sectional view for explaining the operation of the optical pickup device having a parabolic reflector according to the present invention.

Claims (4)

정보기록매체(30)의 표면에 레이저비임을 조사하고 그 정보기록매체(30)의 표면에서 반사되는 레이저비임의 반사광을 수취하여 정보기록매체(30)의 표면상에 기록된 정보를 독취하는 광픽업장치에 있어서, 레이지비임을 발생하는 레이저광원(50)과: 상기 홀로그램 레이저광원(50)으로부터 방사되는 레이저비임을 3비임으로 분할하여 반사시키는 광회절수단(60); 중앙에 상기 레이저광원(50)이 장착되고 상기 광회절수단(60)에서 3분할되어 반사되는 레이저비임을 상기 정보기록매체(30)의 표면상에 집광하고 그 정보기록매체(30)의 표면에서 반사되는 반사광을 상기 광회절수단(60)을 통해 상기 레이저광원(50)에 집속되도록 하는 파라볼라 반사경(40)을 갖추어 구성된 것을 특징으로 하는 파라볼라 반사경을 갖춘 광픽업장치.The light which irradiates the laser beam on the surface of the information recording medium 30, receives the reflected light of the laser beam reflected from the surface of the information recording medium 30, and reads the information recorded on the surface of the information recording medium 30. A pickup apparatus, comprising: a laser light source (50) for generating a laser beam: optical diffraction means (60) for dividing and reflecting a laser beam emitted from the hologram laser light source (50) into three beams; The laser light source 50 is mounted at the center, and the laser beam reflected by splitting and reflecting by the optical diffraction means 60 is condensed on the surface of the information recording medium 30, and then on the surface of the information recording medium 30. And a parabola reflector (40) for focusing the reflected light reflected by the optical diffraction means (60) to the laser light source (50). 제1항에 있어서, 상기 광회절수단(60)은 상기 파라볼라 반사경(40)의 주변 상부에서 연장되는 고정아암(80)을 통해 상기 파라볼라 반사경(40)의 중앙부에 설치되는 미러로 구성되는 것을 특징으로 하는 파라볼라 반사경을 갖춘 광괵업장치.The method of claim 1, wherein the optical diffraction means (60) is characterized in that the mirror is provided in the central portion of the parabola reflector 40 through a fixing arm 80 extending from the upper peripheral portion of the parabola reflector 40 Light up device with parabolic reflector. 제1항에 있어서, 상기 파라볼라 반사경(40)은 그 주변에 제공되는 바이어싱수단(70)에 의해 변위되어 상기 레이저비임의 반사각이 가변되는 반구형상으로 형성된 것을 특징으로 하는 파라볼라 반사경을 갖춘 광픽업장치.The optical pickup having a parabola reflector according to claim 1, wherein the parabolic reflector 40 is formed in a hemispherical shape which is displaced by a biasing means 70 provided at a periphery thereof to change the reflection angle of the laser beam. Device. 제1항에 있어서, 상기 레이저광원(50)은 상기 레이저비임의 발생을 위한 발광소자와 상기 디스크(30)로부터의 반사광을 수광하는 수광소자가 일체로 형성된 홀로그램 레이저다이오드로 구성되어 상기 파라볼라반사경(40)의 변위에 따라 포커싱 밋 트랙킹이 이루어지는 것을 특징으로 하는 파라볼라 반사경을 갖춘 광픽업장치.The laser beam source of claim 1, wherein the laser light source 50 comprises a hologram laser diode in which a light emitting element for generating the laser beam and a light receiving element for receiving the reflected light from the disk 30 are integrally formed. Optical pickup device having a parabola reflector, characterized in that focusing meet tracking according to the displacement of 40). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930023879A 1993-11-11 1993-11-11 Optical pick-up apparatus with paravola reflector KR960006099B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930023879A KR960006099B1 (en) 1993-11-11 1993-11-11 Optical pick-up apparatus with paravola reflector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930023879A KR960006099B1 (en) 1993-11-11 1993-11-11 Optical pick-up apparatus with paravola reflector

Publications (2)

Publication Number Publication Date
KR950015261A true KR950015261A (en) 1995-06-16
KR960006099B1 KR960006099B1 (en) 1996-05-08

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KR1019930023879A KR960006099B1 (en) 1993-11-11 1993-11-11 Optical pick-up apparatus with paravola reflector

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Also Published As

Publication number Publication date
KR960006099B1 (en) 1996-05-08

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