KR950024160A - Optical axis shift adjusting device of optical pickup device - Google Patents

Optical axis shift adjusting device of optical pickup device Download PDF

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Publication number
KR950024160A
KR950024160A KR1019940001469A KR19940001469A KR950024160A KR 950024160 A KR950024160 A KR 950024160A KR 1019940001469 A KR1019940001469 A KR 1019940001469A KR 19940001469 A KR19940001469 A KR 19940001469A KR 950024160 A KR950024160 A KR 950024160A
Authority
KR
South Korea
Prior art keywords
objective lens
axis
optical axis
adjusting
optical
Prior art date
Application number
KR1019940001469A
Other languages
Korean (ko)
Other versions
KR100294535B1 (en
Inventor
박수한
배정국
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 KR1019940001469A priority Critical patent/KR100294535B1/en
Publication of KR950024160A publication Critical patent/KR950024160A/en
Application granted granted Critical
Publication of KR100294535B1 publication Critical patent/KR100294535B1/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
    • G11B7/12—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
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Head (AREA)

Abstract

광픽업장치에 있어서 광출력장치에서 출사되어 대물렌즈를 통하여 집속되는 레이저빔의 쉬프트를 조정하는 장치가 개시된다.Disclosed is an apparatus for adjusting a shift of a laser beam emitted from an optical output apparatus and focused through an objective lens in an optical pickup apparatus.

본 발명에 의한 광축쉬프트 조정장치는 광발산장치로부터 발생된 레이저빔을 집광시키는 대물렌즈의 축상에서 왕복운동할 수 있도록 설치되는 광검출기; 광검출기를 대물렌즈의 축상으로 왕복운동시키는 구동장치; 그리고 구동장치가 광검출기를 대물렌즈의 축상에서 왕복운동시킬때 광검출기로부터 발생되는 편차신호가 최소로 되도록 광발산장치의 위치를 조정하는 쉬프트 조정장치를 포함함을 특징으로 한다.An optical axis shift adjusting apparatus according to the present invention comprises: a photodetector installed to reciprocate on an axis of an objective lens for condensing a laser beam generated from a light emitting device; A drive device for reciprocating the photodetector on the axis of the objective lens; And a shift adjusting device for adjusting the position of the light emitting device so that the deviation signal generated from the light detector is minimized when the driving device reciprocates on the axis of the objective lens.

본 발명에 따른 광축쉬프트 조정장치는 액튜에이터를 통하여 대물렌즈를 구동하는 대신 광검출기를 대물렌즈의 상하방향으로 왕복운동시킴으로써 광축의 쉬프트량을 오차없이 조정할 수 있게 하는 잇점을 갖는다.The optical axis shift adjusting device according to the present invention has an advantage that the shift amount of the optical axis can be adjusted without error by reciprocating the photodetector in the vertical direction of the objective lens instead of driving the objective lens through the actuator.

Description

광픽업장치의 광축쉬프트 조정장치Optical axis shift adjusting device of optical pickup device

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

제2도는 제1도에 도시된 광검출기를 보이는 도면이다,2 is a view showing the photodetector shown in FIG.

제4도는 대물렌즈를 통한 광축의 궤적을 도시한 도면이다,4 is a view showing the trajectory of the optical axis through the objective lens,

제8도는 본 발명에 따른 광축쉬프트 조정장치의 바람직한 실시예를 보이는 도면이다.8 is a view showing a preferred embodiment of the optical axis shift adjustment apparatus according to the present invention.

Claims (1)

광발산장치와 대물렌즈의 중심축사이의 편차를 조정하는 장치에 있어서, 광발산장치로부터 발생된 레이저빔을 집광시키는 대물렌즈의 축상에서 왕복운동할 수 있도록 설치되는 광검출기; 상기 광검출기를 상기 대물렌즈의 축상으로 왕복운동시키는 구동장치; 그리고 상기 구동장치가 상기 광검출기를 상기 대물렌즈의 축상에서 왕복운동시킬 때 상기 광검출기로부터 발생되는 편자신호가 최소로 되도록 상기 광발산장치의 위치를 쉬프트시키는 쉬프트 조정장치를 포함하는 광축쉬프트 조정장치.An apparatus for adjusting a deviation between a light emitting device and a central axis of an objective lens, comprising: a photodetector provided to reciprocate on an axis of an objective lens for focusing a laser beam generated from the light emitting device; A drive device for reciprocating the photodetector on the axis of the objective lens; And a shift adjusting device for shifting the position of the light emitting device to minimize the polarization signal generated from the light detector when the driving device reciprocates the light detector on the axis of the objective lens. . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940001469A 1994-01-27 1994-01-27 Optic axis shift control device KR100294535B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940001469A KR100294535B1 (en) 1994-01-27 1994-01-27 Optic axis shift control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940001469A KR100294535B1 (en) 1994-01-27 1994-01-27 Optic axis shift control device

Publications (2)

Publication Number Publication Date
KR950024160A true KR950024160A (en) 1995-08-21
KR100294535B1 KR100294535B1 (en) 2001-09-17

Family

ID=37527550

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940001469A KR100294535B1 (en) 1994-01-27 1994-01-27 Optic axis shift control device

Country Status (1)

Country Link
KR (1) KR100294535B1 (en)

Also Published As

Publication number Publication date
KR100294535B1 (en) 2001-09-17

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