KR950006742A - Optical pickup for LP disk - Google Patents

Optical pickup for LP disk Download PDF

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Publication number
KR950006742A
KR950006742A KR1019930017129A KR930017129A KR950006742A KR 950006742 A KR950006742 A KR 950006742A KR 1019930017129 A KR1019930017129 A KR 1019930017129A KR 930017129 A KR930017129 A KR 930017129A KR 950006742 A KR950006742 A KR 950006742A
Authority
KR
South Korea
Prior art keywords
laser light
lens
wall surface
optical fiber
photodiode
Prior art date
Application number
KR1019930017129A
Other languages
Korean (ko)
Other versions
KR950007296B1 (en
Inventor
임석병
Original Assignee
배순훈
대우전자 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.)
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Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019930017129A priority Critical patent/KR950007296B1/en
Publication of KR950006742A publication Critical patent/KR950006742A/en
Application granted granted Critical
Publication of KR950007296B1 publication Critical patent/KR950007296B1/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
    • G11B7/1384—Fibre optics
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads

Abstract

본 발명은 LP디스크용 광픽업에 관한 것으로, 좌신호용 레이저 다이오드(10)와, 좌신호검출용 포토다이오드(14), 상기 레이저 다이오드(10)에서 방사된 레이저광을 집광시키기 위한 렌즈(12), 상기 렌즈(12)에서 집광된 레이저광을 LP디시크(40)에 형성된 소리골(30)의 좌측 벽면으로 유도하도록 설치된 좌측 입사용 광파이버(16) 및, 상기 소리골(30)의 좌측 벽면에서 반사된 레이저광을 상기 포토다이오드(14)로 유도하도록 설치된 좌측 반사용 광파이버(18)를 갖춘 좌신호 검출부와; 우신호용 레이저 다이오드(20)와, 우신호검출용 포토다이오드(24), 상기 레이저 다이오드(20)에서 방사된 레이저광을 집광시키기 위한 렌즈(22), 상기 렌즈(22)에서 집광된 레이저광을 상기 LP디스크(40)에 형성된 소리골(30)의 우측 벽면으로 유도하도록 설치된 우측 입사용 광파이버(26)및, 상기 소리골(30)의 우측 벽면에서 반사된 레이저광을 상기 포토다이오드(24)로 유도하도록 설치된 우측 반사용 광파이버(28)를 갖춘 우신호검출부로 이루어진다.The present invention relates to an optical pickup for an LP disc, comprising a left signal laser diode (10), a left signal detection photodiode (14), and a lens (12) for condensing laser light emitted from the laser diode (10). , The left incident optical fiber 16 installed to guide the laser light collected by the lens 12 to the left wall surface of the sound valley 30 formed on the LP disc 40 and the reflection on the left wall surface of the sound valley 30. A left signal detector having a left reflecting optical fiber 18 installed to guide the laser light to the photodiode 14; The right signal laser diode 20, the right signal detection photodiode 24, the lens 22 for condensing the laser light emitted from the laser diode 20, and the laser light focused from the lens 22 The right incident optical fiber 26 installed to guide the right wall surface of the sound valley 30 formed in the LP disk 40 and the laser light reflected from the right wall surface of the sound valley 30 to the photodiode 24. It consists of a right signal detection unit having a right side optical fiber for reflection (28).

(제1도)(Figure 1)

Description

엘피(LP)디스크용 광픽업Optical pickup for LP disk

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

제1도는 본 발명에 따른 LP디스크용 광픽업을 설명하기 위한 개략적인 도면이다.1 is a schematic diagram illustrating an optical pickup for an LP disc according to the present invention.

Claims (1)

좌신호용 레이저 다이오드(10)와, 좌신호검출용 포토다이오드(14), 상기 레이저 다이오드(10)에서 방사된 레이저광을 집광시키기 위한 렌즈(12), 상기 렌즈(12)에서 집광된 레이저광을 LP디시크(40)에 형성된 소리골(30)의 좌측 벽면으로 유도하도록 설치된 좌측 입사용 광파이버(16) 및, 상기 소리골(30)의 좌측 벽면에서 반사된 레이저광을 상기 포토다이오드(14)로 유도하도록 설치된 좌측 반사용 광파이버(18)를 갖춘 좌신호검출부와; 우신호용 레이저 다이오드(20)와, 우신호검출용 포토다이오드(24), 상기 레이저 다이오드(20)에서 방사된 레이저광을 집광시키기 위한 렌즈(22), 상기 렌즈(22)에서 집광된 레이저광을 상기 LP디스크(40)에 형성된 소리골(30)의 우측 벽면으로 유도하도록 설치된 우측 입사용 광파이버(26)및, 상기 소리골(30)의 우측 벽면에서 반사된 레이저광을 상기 포토다이오(24)로 유도하도록 설치된 우측 반사용 광파이버(28)를 갖춘 우신호검출부로 이루어진 것을 특징으로 하는 엘피(LP)디스크용 광픽업.The left signal laser diode 10, the left signal detection photodiode 14, the lens 12 for condensing the laser light emitted from the laser diode 10, and the laser light focused from the lens 12 The left incident optical fiber 16 installed to guide the left wall surface of the sound valley 30 formed in the LP disc 40 and the laser light reflected from the left wall surface of the sound valley 30 are guided to the photodiode 14. A left signal detecting unit having a left reflecting optical fiber 18 installed so as to be mounted thereon; The right signal laser diode 20, the right signal detection photodiode 24, the lens 22 for condensing the laser light emitted from the laser diode 20, and the laser light focused from the lens 22 The right incident optical fiber 26 installed to guide the right wall surface of the sound valley 30 formed on the LP disk 40 and the laser beam reflected from the right wall surface of the sound valley 30 are guided to the photodiode 24. An optical pickup for an LP disk, characterized in that consisting of a right signal detection unit having a right side reflective optical fiber (28). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930017129A 1993-08-31 1993-08-31 Optical pick up of l.d.p. KR950007296B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930017129A KR950007296B1 (en) 1993-08-31 1993-08-31 Optical pick up of l.d.p.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930017129A KR950007296B1 (en) 1993-08-31 1993-08-31 Optical pick up of l.d.p.

Publications (2)

Publication Number Publication Date
KR950006742A true KR950006742A (en) 1995-03-21
KR950007296B1 KR950007296B1 (en) 1995-07-07

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ID=19362381

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930017129A KR950007296B1 (en) 1993-08-31 1993-08-31 Optical pick up of l.d.p.

Country Status (1)

Country Link
KR (1) KR950007296B1 (en)

Also Published As

Publication number Publication date
KR950007296B1 (en) 1995-07-07

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