KR100213269B1 - 다층 디스크용 광 픽업 - Google Patents
다층 디스크용 광 픽업 Download PDFInfo
- Publication number
- KR100213269B1 KR100213269B1 KR1019940029492A KR19940029492A KR100213269B1 KR 100213269 B1 KR100213269 B1 KR 100213269B1 KR 1019940029492 A KR1019940029492 A KR 1019940029492A KR 19940029492 A KR19940029492 A KR 19940029492A KR 100213269 B1 KR100213269 B1 KR 100213269B1
- Authority
- KR
- South Korea
- Prior art keywords
- laser
- optical disk
- triangular
- triangular prism
- prism
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 53
- 239000010410 layer Substances 0.000 description 10
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
-
- 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
- G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
-
- 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
-
- 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
- G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
- G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Description
Claims (1)
- 광 디스크를 중심으로 하여 서로 직각 방향으로 배열 설치되며, 각각 다른 파장의 레이저 빔을 주사하는 제1, 2레이저 다이오드와, 상기 제1, 2레이저 다이오드 각각의 전면에 위치되며 주사된 레이저 빔을 +1차, 0차, -1차의 빔으로 회절 시키는 회절격자와, 상기 광 디스크와 수직되는 위치에 마련되는 포토 다이오드와, 제1삼각 프리즘과, 서로 면접촉되어 제1삼각 프리즘과 동일 크기의 삼각 프리즘을 형성하는 제2, 3삼각 프리즘을 갖으며, 제1, 2레이저 다이오드의 광 경로상에 위치되는 편광 프리즘과, 상기 제2, 3삼각 프리즘의 접촉면 사이에 개재되며 레이저 다이오드로 부터 주사된 레이저 빔을 반반사 반투과 시키는 제1반사막과, 상기 제2, 3삼각 프리즘과 제1삼각 프리즘 사이의 접촉면 사이에 도포되며 레이저 다이오드로 부터 주사된 레이저 빔을 반반사 반투과 시키는 제2반사막과, 상기 편광 프리즘과 광 디스크 사이에 위치되며 제1, 2레이저 다이오드로 부터 주사되어진 레이저 빔을 광 디스크에 집속시키는 집속수단;을 포함하여 된 것을 특징으로 하는 다층 디스크용 광픽업.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940029492A KR100213269B1 (ko) | 1994-11-11 | 1994-11-11 | 다층 디스크용 광 픽업 |
JP7317107A JPH08315411A (ja) | 1994-11-11 | 1995-11-10 | 光ピックアップシステム |
US08/556,684 US5901132A (en) | 1994-11-11 | 1995-11-13 | Pickup head having two laser light sources for separately reading an optical disk with two recording layers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940029492A KR100213269B1 (ko) | 1994-11-11 | 1994-11-11 | 다층 디스크용 광 픽업 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960019125A KR960019125A (ko) | 1996-06-17 |
KR100213269B1 true KR100213269B1 (ko) | 1999-08-02 |
Family
ID=19397600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940029492A Expired - Fee Related KR100213269B1 (ko) | 1994-11-11 | 1994-11-11 | 다층 디스크용 광 픽업 |
Country Status (3)
Country | Link |
---|---|
US (1) | US5901132A (ko) |
JP (1) | JPH08315411A (ko) |
KR (1) | KR100213269B1 (ko) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7038994B1 (en) * | 1996-05-27 | 2006-05-02 | Sony Corporation | Optical pickup device with a plurality of laser couplers |
US6504812B2 (en) | 1996-05-27 | 2003-01-07 | Sony Corporation | Optical pickup device with a plurality of laser couplers |
JPH10308031A (ja) * | 1997-05-06 | 1998-11-17 | Sankyo Seiki Mfg Co Ltd | 光ピックアップ装置 |
US6285645B1 (en) | 1997-05-27 | 2001-09-04 | Asahi Glass Company Ltd. | Optical device |
US6097691A (en) * | 1997-09-05 | 2000-08-01 | Asahi Glass Company Ltd. | Optical device for recording or reading data to an optical disk |
KR100281880B1 (ko) * | 1997-12-30 | 2001-02-15 | 윤종용 | 호환형광픽업장치 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5485452A (en) * | 1991-06-28 | 1996-01-16 | Pioneer Electronic Corporation | Optical information recording medium |
KR100213282B1 (ko) * | 1994-12-27 | 1999-08-02 | 전주범 | 다층 디스크용 광 픽업 |
KR100200837B1 (ko) * | 1995-01-24 | 1999-06-15 | 윤종용 | 다층 기록막을 갖는 광디스크를 위한 광픽업 |
-
1994
- 1994-11-11 KR KR1019940029492A patent/KR100213269B1/ko not_active Expired - Fee Related
-
1995
- 1995-11-10 JP JP7317107A patent/JPH08315411A/ja active Pending
- 1995-11-13 US US08/556,684 patent/US5901132A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH08315411A (ja) | 1996-11-29 |
US5901132A (en) | 1999-05-04 |
KR960019125A (ko) | 1996-06-17 |
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Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19941111 |
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A201 | Request for examination | ||
PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19970122 Comment text: Request for Examination of Application Patent event code: PA02011R01I Patent event date: 19941111 Comment text: Patent Application |
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Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 19990319 |
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Comment text: Registration of Establishment Patent event date: 19990513 Patent event code: PR07011E01D |
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