KR890008764A - Focus photodetector - Google Patents

Focus photodetector Download PDF

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Publication number
KR890008764A
KR890008764A KR1019880012177A KR880012177A KR890008764A KR 890008764 A KR890008764 A KR 890008764A KR 1019880012177 A KR1019880012177 A KR 1019880012177A KR 880012177 A KR880012177 A KR 880012177A KR 890008764 A KR890008764 A KR 890008764A
Authority
KR
South Korea
Prior art keywords
detector
focus photodetector
substrate
focus
photodetector
Prior art date
Application number
KR1019880012177A
Other languages
Korean (ko)
Inventor
미찌오 오까
Original Assignee
오오가노리오
소니 가부시끼 가이샤
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 오오가노리오, 소니 가부시끼 가이샤 filed Critical 오오가노리오
Publication of KR890008764A publication Critical patent/KR890008764A/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

Abstract

내용 없음No content

Description

포커스 광검출 장치Focus photodetector

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

제1도는 본 발명의 일실시예를 표시하는 개략도 평면도.1 is a schematic plan view showing an embodiment of the present invention.

제2도는 그 조정을 표시하는 개략평면도.2 is a schematic plan view showing the adjustment.

제3도는 광자기 디스크 장치의 구성을 표시하는 개략도.3 is a schematic diagram showing a configuration of a magneto-optical disk device.

제4도는 그 포커스 광검출 장치를 표시하는 개략평면도.4 is a schematic plan view showing the focus photodetector.

Claims (1)

1대의 3분할 검출기가 배치된 기판상에 상기 1대의 3분할 검출기상에 입사될 레이저광의 촛점 위치에 대하여 소정의 거리만 전과 후의 광 스포트를 형성할 프리즘이 설치된 포커스 광검출 장치에 있어서, 상기 1대의 3분할 검출기는 상기 기판상에서 상기 1대의 3분할 검출기의 각 분할선이 교차하도록 배치한 것을 특징으로 하는 포커스 광검출 장치.A focus photodetector provided with a prism for forming a light spot before and after only a predetermined distance with respect to a focal position of a laser beam to be incident on the one three-split detector on a substrate on which one three-split detector is disposed, wherein the 1 The large three-segment detector is arranged on the substrate so that each dividing line of the one three-segment detector intersects. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880012177A 1987-11-28 1988-09-21 Focus photodetector KR890008764A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP301269 1987-11-28
JP62301269A JP2605760B2 (en) 1987-11-28 1987-11-28 Focus detection device

Publications (1)

Publication Number Publication Date
KR890008764A true KR890008764A (en) 1989-07-12

Family

ID=17894783

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880012177A KR890008764A (en) 1987-11-28 1988-09-21 Focus photodetector

Country Status (2)

Country Link
JP (1) JP2605760B2 (en)
KR (1) KR890008764A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03192541A (en) * 1989-12-21 1991-08-22 Nec Corp Optical head device

Also Published As

Publication number Publication date
JP2605760B2 (en) 1997-04-30
JPH01143026A (en) 1989-06-05

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application