DE69939076D1 - Optischer Datenspeicher - Google Patents

Optischer Datenspeicher

Info

Publication number
DE69939076D1
DE69939076D1 DE69939076T DE69939076T DE69939076D1 DE 69939076 D1 DE69939076 D1 DE 69939076D1 DE 69939076 T DE69939076 T DE 69939076T DE 69939076 T DE69939076 T DE 69939076T DE 69939076 D1 DE69939076 D1 DE 69939076D1
Authority
DE
Germany
Prior art keywords
data storage
optical data
optical
storage
data
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
Application number
DE69939076T
Other languages
English (en)
Inventor
Fumihiro Tawa
Shinya Hasegawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE69939076D1 publication Critical patent/DE69939076D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0955—Lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0056—Arrays characterized by the distribution or form of lenses arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses
    • 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
    • G11B7/12—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
    • 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
    • G11B7/1376—Collimator 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
    • G11B7/12—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
    • 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
    • G11B7/1398—Means for shaping the cross-section of the beam, e.g. into circular or elliptical cross-section
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0062—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
    • G02B3/0068—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between arranged in a single integral body or plate, e.g. laminates or hybrid structures with other optical elements

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)
  • Lenses (AREA)
DE69939076T 1998-09-14 1999-08-03 Optischer Datenspeicher Expired - Lifetime DE69939076D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26028198A JP3370612B2 (ja) 1998-09-14 1998-09-14 光強度変換素子、コリメートレンズ、対物レンズ及び光学装置

Publications (1)

Publication Number Publication Date
DE69939076D1 true DE69939076D1 (de) 2008-08-21

Family

ID=17345878

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69939076T Expired - Lifetime DE69939076D1 (de) 1998-09-14 1999-08-03 Optischer Datenspeicher

Country Status (5)

Country Link
US (2) US6356395B1 (de)
EP (3) EP1321795A3 (de)
JP (1) JP3370612B2 (de)
CN (1) CN1196953C (de)
DE (1) DE69939076D1 (de)

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JP3370612B2 (ja) * 1998-09-14 2003-01-27 富士通株式会社 光強度変換素子、コリメートレンズ、対物レンズ及び光学装置
JP2001350117A (ja) * 2000-06-09 2001-12-21 Hamamatsu Kagaku Gijutsu Kenkyu Shinkokai レーザ光強度分布平坦化マスクおよびそれを用いたレーザメッキ装置ならびにレーザメッキ方法
JP3951577B2 (ja) * 2000-09-20 2007-08-01 富士電機システムズ株式会社 濁度および微粒子の測定方法と装置
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US7298553B2 (en) * 2001-03-20 2007-11-20 Thomson Licesning Element for the combined symmetrization and homogenization of a bundle of beams
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US7079456B2 (en) * 2002-07-04 2006-07-18 Matsushita Electric Industrial Co., Ltd. Optical recording head capable of correcting spherical aberration
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US20040213097A1 (en) * 2003-04-25 2004-10-28 Konica Minolta Opto, Inc. Optical pick-up device
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WO2005060235A1 (en) * 2003-12-15 2005-06-30 Koninklijke Philips Electronics, N.V. Illumination optics for scanning laser projector applications having a one-dimensional pixel array
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JP2005221872A (ja) * 2004-02-06 2005-08-18 Nec Viewtechnology Ltd 照明装置および表示装置
DE102004042561A1 (de) 2004-07-20 2006-02-16 Osram Opto Semiconductors Gmbh Optisches Element
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US7495837B2 (en) * 2005-01-31 2009-02-24 Avago Technologies General Ip (Singapore) Pte. Ltd Collimating lens structures
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JP5336029B2 (ja) * 2005-06-14 2013-11-06 株式会社キーエンス 回帰反射型光電スイッチ
JP4849939B2 (ja) * 2006-04-10 2012-01-11 Ｈｏｙａ株式会社 光情報記録再生装置
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US7758208B2 (en) * 2006-12-22 2010-07-20 Lighting Science Group Corporation Multi-primary LED collimation optic assemblies
EP2100182A4 (de) * 2006-12-22 2012-01-04 Lighting Science Group Corp Optische anordnungen von multiprimärer led-bündelung
US8315526B2 (en) * 2007-06-18 2012-11-20 Hewlett-Packard Development Company, L.P. Misalignment tolerant free space optical transceiver
US9217854B2 (en) * 2009-04-28 2015-12-22 Cree, Inc. Lens with controlled light refraction
US9416926B2 (en) 2009-04-28 2016-08-16 Cree, Inc. Lens with inner-cavity surface shaped for controlled light refraction
US10119662B2 (en) 2009-04-28 2018-11-06 Cree, Inc. Lens with controlled light refraction
US9255686B2 (en) 2009-05-29 2016-02-09 Cree, Inc. Multi-lens LED-array optic system
US8023206B2 (en) * 2009-07-24 2011-09-20 Molecular Technology Gmbh Achromatic optical system for beam shaping
KR20110090648A (ko) * 2010-02-04 2011-08-10 삼성전자주식회사 광 픽업장치
US8845119B2 (en) * 2010-03-15 2014-09-30 Panasonic Corporation Light emitting device, surface light source, and liquid crystal display apparatus
JP2010186754A (ja) * 2010-05-06 2010-08-26 Ｎｅｃディスプレイソリューションズ株式会社 照明装置および表示装置
US8602591B2 (en) * 2010-06-29 2013-12-10 Osram Sylvania Inc. Optical illumination system producing an asymmetric beam pattern
CN102818215A (zh) * 2011-06-07 2012-12-12 富准精密工业(深圳)有限公司 透镜及照明装置
JP5909369B2 (ja) 2012-01-16 2016-04-26 浜松ホトニクス株式会社 レーザ光整形用光学部品の設計方法、及び、レーザ光整形用光学部品の製造方法
US9757912B2 (en) 2014-08-27 2017-09-12 Cree, Inc. One-piece multi-lens optical member with ultraviolet inhibitor and method of manufacture
CN108604016A (zh) * 2016-02-09 2018-09-28 三菱电机株式会社 光束整形装置以及激光振荡器
NL2017493B1 (en) * 2016-09-19 2018-03-27 Kulicke & Soffa Liteq B V Optical beam homogenizer based on a lens array
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EP3355097A1 (de) * 2017-01-31 2018-08-01 Fisba AG Vorrichtung zur kollimation eines lichtstrahls, hochleistungslaser und fokussieroptik sowie verfahren zum kollimieren eines lichtstrahles
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JP6802990B2 (ja) * 2018-06-19 2020-12-23 カシオ計算機株式会社 光源装置及び投影装置

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Also Published As

Publication number Publication date
EP1321795A3 (de) 2004-01-07
EP0987577A2 (de) 2000-03-22
US6356395B1 (en) 2002-03-12
JP3370612B2 (ja) 2003-01-27
CN1247992A (zh) 2000-03-22
EP0987577A3 (de) 2001-07-04
EP1321795A2 (de) 2003-06-25
EP1569024A1 (de) 2005-08-31
EP1569024B1 (de) 2008-07-09
US6469838B2 (en) 2002-10-22
US20020067549A1 (en) 2002-06-06
CN1196953C (zh) 2005-04-13
JP2000089161A (ja) 2000-03-31

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8328 Change in the person/name/address of the agent

Representative=s name: SEEGER SEEGER LINDNER PARTNERSCHAFT PATENTANWAELTE