KR950022275A - Optical pickup device of magneto-optical disc playback system - Google Patents
Optical pickup device of magneto-optical disc playback system Download PDFInfo
- Publication number
- KR950022275A KR950022275A KR1019930027418A KR930027418A KR950022275A KR 950022275 A KR950022275 A KR 950022275A KR 1019930027418 A KR1019930027418 A KR 1019930027418A KR 930027418 A KR930027418 A KR 930027418A KR 950022275 A KR950022275 A KR 950022275A
- Authority
- KR
- South Korea
- Prior art keywords
- magneto
- beam splitter
- optical
- reflected
- optical pickup
- Prior art date
Links
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
- G11B7/1395—Beam splitters or combiners
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
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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
- G11B7/1362—Mirrors
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
본 발명은 광자기디스크재생장치의 광픽업장치에 관한 것으로, 자기적 성질에 의해 정보가 기록된 광자기 디스크(20)의 표면에 조사되는 레이저비임을 발생하는 레이저광원(22)과, 이 레이저광원(22)에서 발생되는 레이저비임을 대물렌즈(30)를 통해 상기 광자기 디스크(20)상에 조사되도록 반사하는 제1비임스플리티(26), 상기 광자기 디스크(20)에서 반사되어 상기 제1비임스플리터(26)를 통과하는 반사광을 재차 상기 제1비임스플리터(26)측으로 반사시키는 반사면(34)을 갖춘 각형프리즘(32), 상기 제1비인플리터(26)로부터 반사되는 반사광의 일부성분을 수광소자(36)측으로 반사시키는 제2비임스플리터(38), 상기 제2비임스플리터(38)를 통과한 반사광의 잔여 성분을 상기 수광소자(36)측으로 반사시키는 반사코팅미러(40)를 갖추어 구성되고, 상기 반사미러(34)와 상기 수광소자(36)는 상기 각형 프리즘(32)의 저면에 형성되도록 하여 간단한 광학계를 실현하여 박형의 광픽업장치를 제공하는 것이다.The present invention relates to an optical pickup apparatus of a magneto-optical disk reproducing apparatus, comprising: a laser light source (22) for generating a laser beam irradiated onto a surface of a magneto-optical disk (20) on which information is recorded by magnetic properties; The first beam split 26 reflects the laser beam generated by the light source 22 to be irradiated onto the magneto-optical disk 20 through the objective lens 30, and is reflected by the magneto-optical disk 20. Square prism 32 having a reflecting surface 34 for reflecting the reflected light passing through the first beam splitter 26 back to the first beam splitter 26, and the reflected light reflected from the first non-split 26. The second beam splitter 38 reflects some components of the light beam toward the light receiving element 36, and the reflection coating mirror 40 reflects the remaining components of the reflected light passing through the second beam splitter 38 to the light receiving element 36. ) Is configured with a reflection mirror (34) The light receiving element 36 is formed on the bottom surface of the prismatic prism 32 to realize a simple optical system to provide a thin optical pickup device.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 본 발명에 따른 광자기디스크재생시스템의 광픽업장치의 구성을 설명하는 도면이다.2 is a view for explaining the configuration of an optical pickup apparatus of the magneto-optical disc playback system according to the present invention.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930027418A KR960007901B1 (en) | 1993-12-13 | 1993-12-13 | Optical pick-up apparatus of optical-magnetic disk system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930027418A KR960007901B1 (en) | 1993-12-13 | 1993-12-13 | Optical pick-up apparatus of optical-magnetic disk system |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950022275A true KR950022275A (en) | 1995-07-28 |
KR960007901B1 KR960007901B1 (en) | 1996-06-15 |
Family
ID=19370706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930027418A KR960007901B1 (en) | 1993-12-13 | 1993-12-13 | Optical pick-up apparatus of optical-magnetic disk system |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR960007901B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100438290B1 (en) * | 2001-09-13 | 2004-07-02 | 엘지전자 주식회사 | Optical pickup |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101236975B1 (en) * | 2006-05-04 | 2013-02-22 | 삼성전자주식회사 | A washing machine |
-
1993
- 1993-12-13 KR KR1019930027418A patent/KR960007901B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100438290B1 (en) * | 2001-09-13 | 2004-07-02 | 엘지전자 주식회사 | Optical pickup |
Also Published As
Publication number | Publication date |
---|---|
KR960007901B1 (en) | 1996-06-15 |
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