KR960035476A - 대물렌즈, 광헤드장치 및 광디스크 재생장치 - Google Patents
대물렌즈, 광헤드장치 및 광디스크 재생장치Info
- Publication number
- KR960035476A KR960035476A KR1019960005658A KR19960005658A KR960035476A KR 960035476 A KR960035476 A KR 960035476A KR 1019960005658 A KR1019960005658 A KR 1019960005658A KR 19960005658 A KR19960005658 A KR 19960005658A KR 960035476 A KR960035476 A KR 960035476A
- Authority
- KR
- South Korea
- Prior art keywords
- optical
- light
- light beam
- signal recording
- recording surface
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
-
- 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
- G11B7/1372—Lenses
- G11B7/1374—Objective lenses
-
- 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)
- Optical Recording Or Reproduction (AREA)
- Lenses (AREA)
Abstract
Description
Claims (5)
- 공통의 광원에서 출사된 광빔을 광투과충의 두께가 다른 적어도 2개의 광디스크의 각각의 신호기록면에 합초시키는 적어도 2개의 렌즈부를 일체로 형성하여 이루는 것을 특징으로 하는 대물렌즈.
- 제1항에 있어서, 상기 적어도 2개의 렌즈부는, 상기 광투과충의 두께가 1.2㎜또는 0.6㎜의 광디스크의 각각의 신호기록면에 상기 공통의 광원에서 출사된 광빔을 합초시키는 것을 특징으로 하는 대물렌즈.
- 공통의 광빔을 출시하는 광원과, 상기 광빔을 반사 및 투과하여 분광하는 분광수단과, 상기 분광수단에 의해 반사된 공통의 상기 광빔을 광투과층의 두께가 다른 적어도 2개의 광디스크의 각각의 신호기록면에 합초시키는 적어도 2개의 렌즈부를 일체로 형성하여 이루는 대물렌즈와, 상기 분광수단에서 투과된 상기 적어도 2개의 광디스크의 각각의 신호 기록면으로부터의 반사광을 수광하여 전기신호로 변환하는 광검출수단과를 갖추는 것을 특징으로 하는 광헤드장치.
- 제3항에 있어서, 상기 대물렌즈를 적어도 상기 광빔의 광축방향에 따라서 구동하는 구동부를 갖추는 것을 특징으로 하는 광헤드장치.
- 광입사면에서 신호기록면까지의 광투과층의 두께가 다른 적어도 2개의 광디스크의 상기 신호기록면에 광빔을 조사하여 반사광을 전기신호로 변환하는 광헤드부를 갖추는 동시에, 이 전기신호에 따라서 상기 신호기록면에 기록된 정보신호를 재생하는 재생처리부를 갖추어서 이루는 광디스크 재생장치에 있어서, 상기 광헤드부는 공통의 광빔을 출사하는 광원과, 상기 광빔을 반사 및 투과하여 분광하는 분광수단과, 상기 분광수단에 의해 반사된 공통의 상기 광빔을 광투과충의 두께가 다른 적어도 2개의 광디스크의 각각의 신호기록면에 합초시키는 적어도 2개의 렌즈부를 일체로 형성하여 이루는 대물렌즈와, 상기 대물렌즈를 적어도 상기 광빔의 광축 방향에 따라서 구동하는 구동부와, 상기 분광수단에서 투과된 상기 적어도 2개의 광디스크의 각각의 신호기록면으로부터의 반사광을 수광하여 전기신호로 변환하는 광검출수단과를 갖추고, 상기 재생처리부는 상기 광검출수단에서 검출된 적어도 2개의 광디스크의 각각의 신호기록면으로부터의 반사광에 따른 상기 전기신호를 재생처리하는 것을 특징으로 하는 광디스크 재생장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7051311A JPH08248307A (ja) | 1995-03-10 | 1995-03-10 | 対物レンズ、光ヘッド装置及び光ディスク再生装置 |
JP95-051311 | 1995-03-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960035476A true KR960035476A (ko) | 1996-10-24 |
KR100457047B1 KR100457047B1 (ko) | 2005-02-23 |
Family
ID=12883381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960005658A Expired - Fee Related KR100457047B1 (ko) | 1995-03-10 | 1996-03-05 | 대물렌즈,광헤드장치및광디스크재생장치 |
Country Status (7)
Country | Link |
---|---|
US (1) | US5737294A (ko) |
EP (1) | EP0731458A1 (ko) |
JP (1) | JPH08248307A (ko) |
KR (1) | KR100457047B1 (ko) |
CN (1) | CN1096064C (ko) |
MY (1) | MY132228A (ko) |
SG (1) | SG52613A1 (ko) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970017245A (ko) * | 1995-09-29 | 1997-04-30 | 배순훈 | 듀얼 포커스 광 픽업장치 |
JP2806422B2 (ja) * | 1996-01-19 | 1998-09-30 | 日本電気株式会社 | 光ディスク用集光レンズ |
KR100238266B1 (ko) * | 1996-02-14 | 2000-02-01 | 윤종용 | 광학장치 |
JPH09219036A (ja) * | 1996-02-15 | 1997-08-19 | Nec Corp | 光ヘッド装置 |
ATE274228T1 (de) * | 1996-03-08 | 2004-09-15 | Koninkl Philips Electronics Nv | Objektivlinse und abtastanordnung mit einer solchen objektivlinse |
JP3378154B2 (ja) * | 1996-07-16 | 2003-02-17 | シャープ株式会社 | 光学式記録再生装置 |
EP0838812B1 (en) * | 1996-10-23 | 2003-04-09 | Konica Corporation | Method for recording/reproducing on/from an optical information recording medium, optical pickup apparatus, objective lens and design method of objective lens |
US6069860A (en) * | 1996-11-20 | 2000-05-30 | Matsushita Electric Industrial Co., Ltd. | Optical head with objective lens having different numerical apertures to minimize light aberration with respect to optical disks of different thicknesses |
KR100209916B1 (ko) * | 1997-02-13 | 1999-07-15 | 윤종용 | 복수의 광디스크사양들에 호환하는 대물렌즈를구비한 광픽업 |
US6639889B1 (en) | 1997-02-13 | 2003-10-28 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats |
US6091691A (en) | 1997-02-13 | 2000-07-18 | Samsung Electronics Co., Ltd. | Optical pickup having an objective lens compatible with a plurality of optical disk formats |
JP3644179B2 (ja) * | 1997-02-17 | 2005-04-27 | ソニー株式会社 | 対物レンズ、再生装置及び再生方法 |
DE69840429D1 (de) * | 1997-04-21 | 2009-02-26 | Konica Corp | Optische Abtastvorrichtung |
KR100255243B1 (ko) * | 1997-11-19 | 2000-05-01 | 윤종용 | 광기록매체들에 호환가능한 광픽업 |
US6212148B1 (en) | 1998-01-30 | 2001-04-03 | Siros Technologies, Inc. | Optical data storage by selective localized alteration of a format hologram |
US6020985A (en) * | 1998-01-30 | 2000-02-01 | Siros Technologies, Inc. | Multilayer reflection microhologram storage in tape media |
KR100294235B1 (ko) * | 1998-03-12 | 2001-09-17 | 윤종용 | 광학적 가변조리개를 사용한 광픽업 |
US6322933B1 (en) | 1999-01-12 | 2001-11-27 | Siros Technologies, Inc. | Volumetric track definition for data storage media used to record data by selective alteration of a format hologram |
US6111828A (en) * | 1999-01-12 | 2000-08-29 | Siros Technologies, Inc. | Focus error signal generation using confocally filtered detection |
US6322931B1 (en) | 1999-07-29 | 2001-11-27 | Siros Technologies, Inc. | Method and apparatus for optical data storage using non-linear heating by excited state absorption for the alteration of pre-formatted holographic gratings |
US6512606B1 (en) | 1999-07-29 | 2003-01-28 | Siros Technologies, Inc. | Optical storage media and method for optical data storage via local changes in reflectivity of a format grating |
US6310850B1 (en) | 1999-07-29 | 2001-10-30 | Siros Technologies, Inc. | Method and apparatus for optical data storage and/or retrieval by selective alteration of a holographic storage medium |
JP2003242674A (ja) * | 2002-02-13 | 2003-08-29 | Pioneer Electronic Corp | 光ピックアップ装置 |
EP1570470A2 (en) * | 2002-12-04 | 2005-09-07 | Koninklijke Philips Electronics N.V. | Objective lens and scanning device using such an objective lens |
CN104368909B (zh) * | 2014-06-06 | 2016-07-06 | 中科中涵激光设备(福建)股份有限公司 | 一种激光切割方法及激光切割装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0452793B1 (en) * | 1990-04-12 | 1998-01-28 | Matsushita Electric Industrial Co., Ltd. | Optical head having a hologram associated with the objective lens |
US5235581A (en) * | 1990-08-09 | 1993-08-10 | Matsushita Electric Industrial Co., Ltd. | Optical recording/reproducing apparatus for optical disks with various disk substrate thicknesses |
KR950001073B1 (ko) * | 1991-09-19 | 1995-02-08 | 삼성전자 주식회사 | 홀로그램(Hologram) 소자를 이용한 광 픽업 장치 |
JP2559006B2 (ja) * | 1993-01-13 | 1996-11-27 | 松下電器産業株式会社 | 光ヘッド |
JP2532818B2 (ja) * | 1993-02-01 | 1996-09-11 | 松下電器産業株式会社 | 対物レンズおよび光ヘッド装置 |
US5471455A (en) * | 1994-05-17 | 1995-11-28 | Jabr; Salim N. | High density optical storage system |
JP3558306B2 (ja) * | 1994-07-26 | 2004-08-25 | パイオニア株式会社 | 多層記録ディスク及びこれを用いた記録/再生システム |
US5526338A (en) * | 1995-03-10 | 1996-06-11 | Yeda Research & Development Co. Ltd. | Method and apparatus for storage and retrieval with multilayer optical disks |
-
1995
- 1995-03-10 JP JP7051311A patent/JPH08248307A/ja active Pending
-
1996
- 1996-02-27 US US08/607,449 patent/US5737294A/en not_active Expired - Fee Related
- 1996-03-04 SG SG1996006743A patent/SG52613A1/en unknown
- 1996-03-05 KR KR1019960005658A patent/KR100457047B1/ko not_active Expired - Fee Related
- 1996-03-06 MY MYPI96000829A patent/MY132228A/en unknown
- 1996-03-08 EP EP96400494A patent/EP0731458A1/en not_active Withdrawn
- 1996-03-09 CN CN96106027A patent/CN1096064C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
SG52613A1 (en) | 1998-09-28 |
JPH08248307A (ja) | 1996-09-27 |
EP0731458A1 (en) | 1996-09-11 |
US5737294A (en) | 1998-04-07 |
MY132228A (en) | 2007-09-28 |
CN1142661A (zh) | 1997-02-12 |
CN1096064C (zh) | 2002-12-11 |
KR100457047B1 (ko) | 2005-02-23 |
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