DE69923405D1 - Optischer Aufzeichnungs/Abtastkopf für digital versatile disc (DVD) - Google Patents
Optischer Aufzeichnungs/Abtastkopf für digital versatile disc (DVD)Info
- Publication number
- DE69923405D1 DE69923405D1 DE69923405T DE69923405T DE69923405D1 DE 69923405 D1 DE69923405 D1 DE 69923405D1 DE 69923405 T DE69923405 T DE 69923405T DE 69923405 T DE69923405 T DE 69923405T DE 69923405 D1 DE69923405 D1 DE 69923405D1
- Authority
- DE
- Germany
- Prior art keywords
- dvd
- optical recording
- digital versatile
- versatile disc
- scanning head
- 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 - Lifetime
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
- G11B7/1372—Lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1876—Diffractive Fresnel lenses; Zone plates; Kinoforms
-
- 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
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1372—Lenses
- G11B7/1378—Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders
-
- 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
- G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
- G11B7/13922—Means for controlling the beam wavefront, e.g. for correction of aberration passive
-
- 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)
- General Physics & Mathematics (AREA)
- Optical Head (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Lenses (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR9844620 | 1998-10-23 | ||
| KR19980044620 | 1998-10-23 | ||
| KR1019980044858A KR100346398B1 (ko) | 1998-10-23 | 1998-10-26 | 계단형회절격자구조를갖는평판렌즈를채용하여cd-rw에호환하는dvd용광기록/픽업헤드 |
| KR9844858 | 1998-10-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69923405D1 true DE69923405D1 (de) | 2005-03-03 |
| DE69923405T2 DE69923405T2 (de) | 2005-06-30 |
Family
ID=26634246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69923405T Expired - Lifetime DE69923405T2 (de) | 1998-10-23 | 1999-10-22 | Optischer Aufzeichnungs/Abtastkopf für digital versatile disc (DVD) |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0996121B1 (de) |
| JP (2) | JP2000131604A (de) |
| KR (1) | KR100346398B1 (de) |
| CN (1) | CN1201306C (de) |
| DE (1) | DE69923405T2 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6995909B1 (en) | 1999-10-06 | 2006-02-07 | Matsushita Electric Industrial Co., Ltd. | Lens, optical head, optical information writing/reading apparatus and optical information recording medium writing/reading method |
| TW490589B (en) * | 2000-05-24 | 2002-06-11 | Konishiroku Photo Ind | Optical pickup apparatus, objective lens, apparatus for reproducing and/or recording optical information recording medium |
| DE60140028D1 (de) | 2000-07-22 | 2009-11-12 | Samsung Electronics Co Ltd | Kompatibles optisches Abtastgerät |
| US6807139B2 (en) * | 2001-04-12 | 2004-10-19 | Konica Corporation | Objective lens and optical pickup apparatus |
| JP2002311221A (ja) * | 2001-04-18 | 2002-10-23 | Alps Electric Co Ltd | 光学部材及びこれを用いた光学装置 |
| JP3817438B2 (ja) * | 2001-04-18 | 2006-09-06 | アルプス電気株式会社 | 光学部材およびこれを用いた光学装置 |
| EP1440347B1 (de) * | 2001-10-16 | 2007-01-03 | Koninklijke Philips Electronics N.V. | Optischer abtaster |
| WO2004090598A1 (ja) * | 2003-04-03 | 2004-10-21 | Nalux Co., Ltd. | 結像光学素子およびその設計方法 |
| JP5002118B2 (ja) * | 2003-06-18 | 2012-08-15 | コニカミノルタアドバンストレイヤー株式会社 | 光ピックアップ装置用の光学素子、及び光ピックアップ装置 |
| JP2005018897A (ja) * | 2003-06-25 | 2005-01-20 | Toshiba Corp | 光学ヘッド及び光ディスクドライブ |
| JP2007200476A (ja) | 2006-01-27 | 2007-08-09 | Funai Electric Co Ltd | 光ヘッド |
| US10311513B2 (en) | 2012-03-14 | 2019-06-04 | Nasdaq Technology Ab | Method and system for facilitating access to recorded data |
| CN111059488B (zh) * | 2018-10-15 | 2022-03-15 | 深圳市绎立锐光科技开发有限公司 | 照明装置及照明*** |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69635559T2 (de) * | 1995-06-05 | 2006-06-14 | Nec Corp | Optische Wiedergabekopfvorrichtung für verschiedene Plattentypen |
| US5838496A (en) * | 1995-08-28 | 1998-11-17 | Asahi Kogaku Kogyo Kabushiki Kaisha | Diffractive multi-focal objective lens |
| JPH1055567A (ja) * | 1996-05-31 | 1998-02-24 | Daewoo Electron Co Ltd | 光ピックアップシステム |
| KR100267233B1 (ko) * | 1996-09-24 | 2000-10-16 | 윤종용 | 2광원을 이용한 홀로그램 광픽업 |
| KR100386518B1 (ko) * | 1996-09-27 | 2003-09-26 | 산요 덴키 가부시키가이샤 | 광픽업장치및파장선택성회절격자 |
| KR20000015991A (ko) * | 1996-10-31 | 2000-03-25 | 다카노 야스아키 | 광 픽업 장치 |
| KR19980050656A (ko) * | 1996-12-21 | 1998-09-15 | 구자홍 | 이종 광디스크용 광픽업 장치 |
| KR100209916B1 (ko) * | 1997-02-13 | 1999-07-15 | 윤종용 | 복수의 광디스크사양들에 호환하는 대물렌즈를구비한 광픽업 |
-
1998
- 1998-10-26 KR KR1019980044858A patent/KR100346398B1/ko active IP Right Grant
-
1999
- 1999-10-22 EP EP99308341A patent/EP0996121B1/de not_active Expired - Lifetime
- 1999-10-22 DE DE69923405T patent/DE69923405T2/de not_active Expired - Lifetime
- 1999-10-23 CN CNB99125015XA patent/CN1201306C/zh not_active Expired - Lifetime
- 1999-10-25 JP JP11303174A patent/JP2000131604A/ja active Pending
-
2004
- 2004-01-13 JP JP2004006032A patent/JP2004171758A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE69923405T2 (de) | 2005-06-30 |
| JP2000131604A (ja) | 2000-05-12 |
| JP2004171758A (ja) | 2004-06-17 |
| EP0996121B1 (de) | 2005-01-26 |
| CN1254913A (zh) | 2000-05-31 |
| CN1201306C (zh) | 2005-05-11 |
| KR20000027038A (ko) | 2000-05-15 |
| KR100346398B1 (ko) | 2002-10-25 |
| EP0996121A2 (de) | 2000-04-26 |
| EP0996121A3 (de) | 2002-04-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition |