KR20040103121A - 홀로그래픽 롬 시스템 - Google Patents
홀로그래픽 롬 시스템 Download PDFInfo
- Publication number
- KR20040103121A KR20040103121A KR1020030035042A KR20030035042A KR20040103121A KR 20040103121 A KR20040103121 A KR 20040103121A KR 1020030035042 A KR1020030035042 A KR 1020030035042A KR 20030035042 A KR20030035042 A KR 20030035042A KR 20040103121 A KR20040103121 A KR 20040103121A
- Authority
- KR
- South Korea
- Prior art keywords
- reference light
- reproduction
- light
- incident
- angle
- 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.)
- Granted
Links
Classifications
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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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
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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
- G11B7/125—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
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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
-
- 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
- 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
- G11B7/1372—Lenses
- G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
- Holo Graphy (AREA)
Abstract
Description
Claims (2)
- 홀로그래픽 롬 디스크를 재생시키는 홀로그래픽 롬 시스템에 있어서,재생용 기준광을 생성하는 광원과,상기 재생용 기준광을 반사시키는 광 분리기와,상기 반사된 재생용 기준광을 소정 각도로 편향시키는 반사경과,상기 반사경을 회전시켜 상기 광 분리기에서 제공되는 재생용 기준광의 편향각도를 조절하는 액추에이터와,상기 재생용 기준광의 편향각도 변경에 관계없이 상기 재생용 기준광의 입사위치를 보정하여 상기 디스크의 어느 특정 위치로 입사시키는 보정 광학계와를 포함하는 홀로그래픽 롬 시스템.
- 제 1 항에 있어서,상기 보정 광학계는, 상기 반사경의 위치에서 f1 거리에 위치하며, 임의의 편향각도(θ)로 입사되는 재생용 기준광을 90-θ각도로 편향시키는 제 1 렌즈,상기 디스크와 f2 거리에 위치하고 상기 제 1 렌즈와 f1+f2의 거리에 위치하여 상기 90-θ로 편향된 재새용 기준광을 다시 90-θ로 편향시키는 상기 디스크에 입사시키는 제 2 렌즈를 구비하며,상기 제 1, 2 렌즈의 중심점은 상기 재생용 기준광이 상기 디스크에 입사되는 위치의 연장선상에 위치하는 것을 특징으로 하는 홀로그래픽 롬 시스템.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2003-0035042A KR100536682B1 (ko) | 2003-05-31 | 2003-05-31 | 홀로그래픽 롬 시스템 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2003-0035042A KR100536682B1 (ko) | 2003-05-31 | 2003-05-31 | 홀로그래픽 롬 시스템 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20040103121A true KR20040103121A (ko) | 2004-12-08 |
| KR100536682B1 KR100536682B1 (ko) | 2005-12-14 |
Family
ID=37379278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-2003-0035042A Expired - Fee Related KR100536682B1 (ko) | 2003-05-31 | 2003-05-31 | 홀로그래픽 롬 시스템 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100536682B1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100920558B1 (ko) * | 2007-02-02 | 2009-10-08 | 캐논 가부시끼가이샤 | 홀로그래픽 정보 기록/재생장치 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101448635B1 (ko) | 2008-02-26 | 2014-10-08 | 엘지전자 주식회사 | 데이터 기록/재생방법 및 기록/재생장치 |
-
2003
- 2003-05-31 KR KR10-2003-0035042A patent/KR100536682B1/ko not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100920558B1 (ko) * | 2007-02-02 | 2009-10-08 | 캐논 가부시끼가이샤 | 홀로그래픽 정보 기록/재생장치 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100536682B1 (ko) | 2005-12-14 |
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