KR950015249A - Optical pick up - Google Patents

Optical pick up Download PDF

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Publication number
KR950015249A
KR950015249A KR1019930025867A KR930025867A KR950015249A KR 950015249 A KR950015249 A KR 950015249A KR 1019930025867 A KR1019930025867 A KR 1019930025867A KR 930025867 A KR930025867 A KR 930025867A KR 950015249 A KR950015249 A KR 950015249A
Authority
KR
South Korea
Prior art keywords
light
beam splitter
optical pickup
recording medium
optical recording
Prior art date
Application number
KR1019930025867A
Other languages
Korean (ko)
Other versions
KR960013492B1 (en
Inventor
최양오
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.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019930025867A priority Critical patent/KR960013492B1/en
Publication of KR950015249A publication Critical patent/KR950015249A/en
Application granted granted Critical
Publication of KR960013492B1 publication Critical patent/KR960013492B1/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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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
    • G11B7/1395—Beam splitters or combiners

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

본 발명은 광 픽업을개시한다.The present invention discloses an optical pickup.

개시된 광 픽업은 광 발생수단과 상기 광 발생수단으로부터 조사된 광의 경로를 변경시키는 빔스프리터와 상기 빔스프리터에 의해 경로가 변경된 광을 광기록매체로 접속시키는 광집속수단과 광기록매체로부터 반사되는 광을 검출하는 광검출수단을 구비하여 된 광 픽업에 있어서 상기 빔스프리터의 하면에 광기록매체로부터 반사되는 광을 광검출수단으로 집속시키는 홀로그램패턴이 형성되어 구성된다. 따라서 포토다이오드의 위치 조정 및 신호검출이 용이한 이점을 가진다.The disclosed optical pickup includes a light splitting means for changing a path of light emitted from the light generating means and a light converging means for connecting the light whose path has been changed by the beam splitter to an optical recording medium and light reflected from the optical recording medium. In an optical pickup provided with a light detecting means for detecting a light, a hologram pattern is formed on a lower surface of the beam splitter to focus light reflected from the optical recording medium onto the light detecting means. Therefore, it is easy to adjust the position of the photodiode and detect the signal.

Description

광 픽업Optical pickup

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

제2도는 본 발명에 따른 광 픽업을 도시한 개략도.2 is a schematic diagram illustrating an optical pickup according to the present invention.

제3도는 제2도에 도시된 홀로그램패턴의 평면도.3 is a plan view of the hologram pattern shown in FIG.

제4도(가)(나)(다)는 제2도에 도시된 5분할 포토다이오드의 신호검출 상태를 나타낸 참고도.4 (a) (b) (c) are reference diagrams showing the signal detection states of the five-segment photodiode shown in FIG.

Claims (3)

광 발생수단과 상기 광 발생수단으로 부터 조사된 광의 경로를 변경시키는 빔스프리터와 상기 빔스프리터에 의해 경로가 변경된 광을 광기록매체로 집속시키는 광집속수단과 광기록매체로부터 반사되는 광을 검출하는 광검출수단을 구비하여 된 광 픽업에 있어서 상기 빔스프리터의 하면에 광기록매체로부터 반사되는 광을 광검출수단으로 접속시키는 홀로그램패턴이 형성된 것을 특징으로 하는 광픽업.A beam splitter for changing a path of light emitted from the light generating means, the light splitting means for focusing the light whose path has been changed by the beam splitter, and a light reflected from the optical recording medium; And a hologram pattern for connecting the light reflected from the optical recording medium to the light detecting means on a lower surface of the beam splitter in the optical pickup including the light detecting means. 제1항에 있어서 상기 홀로그램패턴이 빔스프리터와 별도로 형성되어 빔스프리터의 하면에 부착된 것을 특징으로 하는 광픽업.The optical pickup of claim 1, wherein the hologram pattern is formed separately from the beam splitter and attached to a bottom surface of the beam splitter. 제1항 또는 제2항중 어느 한 항에 있어서 상기 홀로그램패턴이 서로 다른 2개의 패턴을 가지도록 형성되고, 상기 광검출수단이 5분할 포토다이오드로 이루어진 것을 특징으로 하는 광픽업.The optical pickup according to any one of claims 1 to 3, wherein the hologram pattern has two different patterns, and the light detecting means comprises a 5-divided photodiode. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930025867A 1993-11-30 1993-11-30 Optical pick-up KR960013492B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930025867A KR960013492B1 (en) 1993-11-30 1993-11-30 Optical pick-up

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930025867A KR960013492B1 (en) 1993-11-30 1993-11-30 Optical pick-up

Publications (2)

Publication Number Publication Date
KR950015249A true KR950015249A (en) 1995-06-16
KR960013492B1 KR960013492B1 (en) 1996-10-05

Family

ID=19369395

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930025867A KR960013492B1 (en) 1993-11-30 1993-11-30 Optical pick-up

Country Status (1)

Country Link
KR (1) KR960013492B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100265732B1 (en) * 1997-11-19 2000-09-15 윤종용 Optical pickup
KR100265733B1 (en) * 1997-11-20 2000-09-15 윤종용 Optical pickup
KR100403597B1 (en) * 2001-08-30 2003-10-30 삼성전자주식회사 Optic pickup apparatus comprising a beamsplitter formed hologram and method of compensating of optic axes using the same
KR100432660B1 (en) * 2001-08-17 2004-05-22 삼성전기주식회사 Optical pickup device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100265732B1 (en) * 1997-11-19 2000-09-15 윤종용 Optical pickup
KR100265733B1 (en) * 1997-11-20 2000-09-15 윤종용 Optical pickup
KR100432660B1 (en) * 2001-08-17 2004-05-22 삼성전기주식회사 Optical pickup device
KR100403597B1 (en) * 2001-08-30 2003-10-30 삼성전자주식회사 Optic pickup apparatus comprising a beamsplitter formed hologram and method of compensating of optic axes using the same

Also Published As

Publication number Publication date
KR960013492B1 (en) 1996-10-05

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