KR980011169A - 광 픽-업장치 - Google Patents
광 픽-업장치 Download PDFInfo
- Publication number
- KR980011169A KR980011169A KR1019960031934A KR19960031934A KR980011169A KR 980011169 A KR980011169 A KR 980011169A KR 1019960031934 A KR1019960031934 A KR 1019960031934A KR 19960031934 A KR19960031934 A KR 19960031934A KR 980011169 A KR980011169 A KR 980011169A
- Authority
- KR
- South Korea
- Prior art keywords
- wavelength
- prism
- disk
- light
- transmitting
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 1
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
- G11B7/1359—Single prisms
-
- 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
-
- 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
- G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
- G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
Abstract
Description
Claims (1)
- 레이저 빔을 대물렌즈로서 빔을 집광하여 디스크상에 신호를 기록하고, 그 기록된 정보를 전기신호로 재생시키는 광 픽-업장치에 있어서, 파장이 서로다른 제1 및 제2파장(λ1)(λ2)의 빔을 동시에 방사하는 2파장 레이저 다이오드(31), 상기 2파장 레이저 다이오드(31)의 상측에 배치되어 다수의 광학소자가 일체로 형성되고 빔을 투과하는 프리즘(32), 상기 프리즘(32)의 중앙부에 대각선으로 형성되어 입사되는 레이저 빔을 일정 비율로 반사 및 투과하는 빔 스플리트(33), 상기 프리즘(32)의 양측 중앙부에 대향되게 형성되어 디스크에서 반사되어 돌아오는 광정보를 전류로 변환하여 출력하는 제1 및 제2광검출기(34)(35), 상기 프리즘(33)의 상면에 제1, 제2파장투광부(38)(37)로 형성되어 특정파장의 빔 만을 선택적으로 투과하여 디스크상에 빔 스포트 사이즈를 조절할 수 있는 선택적 빔 투광부(36)로 이루어진 것을 특징으로 하는 광 픽-업장치.※ 참고사항:최초출원 내용에 의하여 공개한 것임.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960031934A KR100190576B1 (ko) | 1996-07-31 | 1996-07-31 | 광 픽-업장치 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960031934A KR100190576B1 (ko) | 1996-07-31 | 1996-07-31 | 광 픽-업장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR980011169A true KR980011169A (ko) | 1998-04-30 |
KR100190576B1 KR100190576B1 (ko) | 1999-06-01 |
Family
ID=19468416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960031934A KR100190576B1 (ko) | 1996-07-31 | 1996-07-31 | 광 픽-업장치 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100190576B1 (ko) |
-
1996
- 1996-07-31 KR KR1019960031934A patent/KR100190576B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR100190576B1 (ko) | 1999-06-01 |
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Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19960731 |
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E701 | Decision to grant or registration of patent right | ||
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Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 19981223 |
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Comment text: Registration of Establishment Patent event date: 19990120 Patent event code: PR07011E01D |
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Payment date: 19990121 End annual number: 3 Start annual number: 1 |
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