KR0137246B1 - 콤팩트 디스크 플레이어의 광 픽업장치 (optical pick-up device of compact disc player) - Google Patents
콤팩트 디스크 플레이어의 광 픽업장치 (optical pick-up device of compact disc player)Info
- Publication number
- KR0137246B1 KR0137246B1 KR1019950014152A KR19950014152A KR0137246B1 KR 0137246 B1 KR0137246 B1 KR 0137246B1 KR 1019950014152 A KR1019950014152 A KR 1019950014152A KR 19950014152 A KR19950014152 A KR 19950014152A KR 0137246 B1 KR0137246 B1 KR 0137246B1
- Authority
- KR
- South Korea
- Prior art keywords
- prism
- silicon substrate
- compact disc
- predetermined
- disc player
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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
- G11B7/1353—Diffractive elements, e.g. holograms or gratings
-
- 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
- G11B7/131—Arrangement of detectors in a multiple array
-
- 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
- G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
Abstract
Description
Claims (2)
- 소정형상의 크기를 갖는 제 1 실리콘기판(4)일측에 형성된 제 2 실리콘기판(4a)의 상부에 설치되어 레이저 빔을 발생하는 레이저 다이오드(1), 임의의 경사면을 갖고 상기 레이저 다이오드(1)와 소정 간격을 두고 설치되어 레이저 빔을 반사시키는 프리즘(2)을 구비하여 디스크(6)상의 정보를 읽는 콤팩트 디스크 플레이어의 광 픽업장치에 있어서,상기 프리즘(2)의 경사면에 형성되어 비점수차를 발생시키며 소정의 굴절율(n2)을 갖는 빔 스플리트(8),상기 빔 스플리트(8)와 레이저 다이오드(1) 사이에 설치되어 0차광, ±1차광의 3빔을 발생하는 회절격자(7),상기 제 1 실리콘 기판(4)과 프리즘(2)의 경계면에 형성되어 있는 소정의 굴절율(n1)을 갖는 반사면(9),상기 프리즘(2)의 상부에 설치되어 반사면(9)을 통한 광 정보를 전기적신호로 변환하는 광 검출기(3)를 포함하여 이루어진 것을 특징으로 하는 콤팩트 디스크 플레이어의 광 픽업장치.
- 제 1 항에 있어서,상기 반사면(9)의 굴절율(n1)이 빔 스플리트(8)의 굴절율(n2) 보다 크게 설정한 것을 특징으로 하는 콤팩트 디스크 플레이어의 광 픽업장치.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950014152A KR0137246B1 (ko) | 1995-05-31 | 1995-05-31 | 콤팩트 디스크 플레이어의 광 픽업장치 (optical pick-up device of compact disc player) |
| EP96303892A EP0749119A3 (en) | 1995-05-31 | 1996-05-30 | Optical reading device |
| US08/655,445 US5787058A (en) | 1995-05-31 | 1996-05-30 | Optical pickup apparatus utilizing a polygonal prism |
| JP8138297A JPH0927142A (ja) | 1995-05-31 | 1996-05-31 | 光ピックアップ装置 |
| CN96108468A CN1146593A (zh) | 1995-05-31 | 1996-05-31 | 光学拾取装置 |
| US09/110,950 US5953294A (en) | 1995-05-31 | 1998-07-07 | Optical pickup apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950014152A KR0137246B1 (ko) | 1995-05-31 | 1995-05-31 | 콤팩트 디스크 플레이어의 광 픽업장치 (optical pick-up device of compact disc player) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960042561A KR960042561A (ko) | 1996-12-21 |
| KR0137246B1 true KR0137246B1 (ko) | 1998-05-15 |
Family
ID=19416087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950014152A Expired - Fee Related KR0137246B1 (ko) | 1995-05-31 | 1995-05-31 | 콤팩트 디스크 플레이어의 광 픽업장치 (optical pick-up device of compact disc player) |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0137246B1 (ko) |
-
1995
- 1995-05-31 KR KR1019950014152A patent/KR0137246B1/ko not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR960042561A (ko) | 1996-12-21 |
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