KR950021917A - Laser Diodes in Optical Pickups - Google Patents

Laser Diodes in Optical Pickups Download PDF

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Publication number
KR950021917A
KR950021917A KR1019930031550A KR930031550A KR950021917A KR 950021917 A KR950021917 A KR 950021917A KR 1019930031550 A KR1019930031550 A KR 1019930031550A KR 930031550 A KR930031550 A KR 930031550A KR 950021917 A KR950021917 A KR 950021917A
Authority
KR
South Korea
Prior art keywords
laser diode
optical pickup
glass
laser diodes
glass block
Prior art date
Application number
KR1019930031550A
Other languages
Korean (ko)
Other versions
KR970003747B1 (en
Inventor
이형재
Original Assignee
이종수
금성알프스전자 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 이종수, 금성알프스전자 주식회사 filed Critical 이종수
Priority to KR1019930031550A priority Critical patent/KR970003747B1/en
Publication of KR950021917A publication Critical patent/KR950021917A/en
Application granted granted Critical
Publication of KR970003747B1 publication Critical patent/KR970003747B1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
    • 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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127—Lasers; Multiple laser arrays

Abstract

본 발명은 광픽업장치의 레이저 다이오드에 관한 것으로, 광픽업장치의 레이저 다이오드 3-빔(Beam)을 발생시키는 광픽업장치의 레이저 다이오드에 있어서, 빛이 발산되는 곳 전단에 유리로 된 글래스 블럭(Class Block)(23)이 장착되는 것을 특징으로 한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser diode of an optical pickup apparatus, comprising: a glass block made of glass in front of a place where light is emitted in a laser diode of an optical pickup apparatus that generates a laser diode 3-beam of the optical pickup apparatus Class Block) 23 is mounted.

따라서 본 발명은 광량손실을 감소시키고 빔패턴을성형하여 효율을 증가시키는 효과가 았다.Therefore, the present invention has the effect of reducing the amount of light loss and increasing the efficiency by forming the beam pattern.

Description

광픽업장치의 레이저 다이오드Laser Diodes in Optical Pickups

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

제1도는 종래의 회절격자를 이용한 레이저 다이오드의 구조도.1 is a structural diagram of a laser diode using a conventional diffraction grating.

제2도는 종래의 회절격자를 이용한 레이저 다이오드의 트랙킹 에러 전압검출장치의 구성도.2 is a configuration diagram of a tracking error voltage detection device of a laser diode using a conventional diffraction grating.

제3도는 제2도의 트랙킹 에러 검출상태도.3 is a tracking error detection state diagram of FIG.

제4도는 본 발명에 의한 레이저 다이오드의 구조도.4 is a structural diagram of a laser diode according to the present invention.

제5도는 본 발명에 의한 트랙에 놓인 빔의 상태도.5 is a state diagram of a beam placed on a track according to the present invention.

제6도는 제4도의 글래스 블럭내의 반사과정을 나타낸 상태도.6 is a state diagram showing the reflection process in the glass block of FIG.

제7도는 본 발명에 의한 레이저 다이오드의 빔형상도.7 is a beam diagram of a laser diode according to the present invention.

제8도는 제4도의 글래스 블럭의 세부구조도.8 is a detailed structural diagram of the glass block of FIG.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

10,21 : 레이저 다이오드11 : 피트10,21: laser diode 11: feet

12 : 트랙13 : 포토다이어드12: Track 13: Photo Died

14 : 비교기22 : 소오스14: comparator 22: source

23 : 글래스블럭23: glass block

Claims (4)

3-빔(Beam)을 발생시키는 광픽업장치의 레이저 다이오드에 있어서, 빛이 발산되는 곳 전단에 유리로된 글래스 블럭(Glass Block)(23)이 장착되는 것을 특징으로 하는 광픽업장치의 레이저 다이오드.In the laser diode of the optical pickup device for generating a three-beam (Beam), the laser diode of the optical pickup device characterized in that a glass block (23) made of glass in front of where the light is emitted . 제1항에 있어서, 상기 글래스 블럭은 빔을 3개로 분리시키는 6면체로 이루어지는 것을 특징으로 하는 광픽업장치의 레이저 다이오드.The laser diode of claim 1, wherein the glass block comprises a hexahedron for dividing the beam into three. 제1항에 있어서, 상기 글래스 블럭은 전반사가 이루어지도록 구성하는 것을 특징으로 하는 광픽업장치의 레이저 다이오드.The laser diode of claim 1, wherein the glass block is configured to totally reflect. 제3항에 있어서, 상기 글래스 블럭(23)은 굴절율이 '1.5'인 유리로 이루어지는 것을 특징으로 하는 광픽업장치의 레이저 다이오드.The laser diode of claim 3, wherein the glass block (23) is made of glass having a refractive index of '1.5'. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930031550A 1993-12-30 1993-12-30 Laser diode of lighting pick-up device KR970003747B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930031550A KR970003747B1 (en) 1993-12-30 1993-12-30 Laser diode of lighting pick-up device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930031550A KR970003747B1 (en) 1993-12-30 1993-12-30 Laser diode of lighting pick-up device

Publications (2)

Publication Number Publication Date
KR950021917A true KR950021917A (en) 1995-07-26
KR970003747B1 KR970003747B1 (en) 1997-03-21

Family

ID=19374506

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930031550A KR970003747B1 (en) 1993-12-30 1993-12-30 Laser diode of lighting pick-up device

Country Status (1)

Country Link
KR (1) KR970003747B1 (en)

Also Published As

Publication number Publication date
KR970003747B1 (en) 1997-03-21

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