TW200501137A - Diffractive optical element and optical information processing device - Google Patents

Diffractive optical element and optical information processing device

Info

Publication number
TW200501137A
TW200501137A TW093111423A TW93111423A TW200501137A TW 200501137 A TW200501137 A TW 200501137A TW 093111423 A TW093111423 A TW 093111423A TW 93111423 A TW93111423 A TW 93111423A TW 200501137 A TW200501137 A TW 200501137A
Authority
TW
Taiwan
Prior art keywords
diffraction element
light beam
wavelength
information processing
processing device
Prior art date
Application number
TW093111423A
Other languages
English (en)
Inventor
Jun-Ichi Asada
Seiji Nishiwaki
Original Assignee
Matsushita Electric Ind Co 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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of TW200501137A publication Critical patent/TW200501137A/zh

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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1809—Diffraction gratings with pitch less than or comparable to the wavelength
    • 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
    • G11B7/1275—Two or more lasers having different wavelengths

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Polarising Elements (AREA)
TW093111423A 2003-04-25 2004-04-23 Diffractive optical element and optical information processing device TW200501137A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003122451 2003-04-25

Publications (1)

Publication Number Publication Date
TW200501137A true TW200501137A (en) 2005-01-01

Family

ID=33410075

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093111423A TW200501137A (en) 2003-04-25 2004-04-23 Diffractive optical element and optical information processing device

Country Status (7)

Country Link
US (1) US20060250933A1 (zh)
EP (1) EP1622137A1 (zh)
JP (1) JPWO2004097819A1 (zh)
KR (1) KR100656000B1 (zh)
CN (1) CN1762009A (zh)
TW (1) TW200501137A (zh)
WO (1) WO2004097819A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI510319B (zh) * 2012-07-06 2015-12-01 Mitsubishi Electric Corp 偏光相位差板及雷射加工機

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1825466B1 (en) * 2004-12-16 2012-02-22 RealD Inc. Compound quarter-wave retarder for optical disc pickup heads
JP2006267768A (ja) * 2005-03-25 2006-10-05 Fuji Photo Film Co Ltd 撮影装置および投光モジュール
KR20070120952A (ko) * 2005-04-20 2007-12-26 아사히 가라스 가부시키가이샤 위상판 및 광헤드 장치
JP2008112512A (ja) * 2006-10-31 2008-05-15 Matsushita Electric Ind Co Ltd 光ピックアップ装置
JP2008117446A (ja) * 2006-11-01 2008-05-22 Sony Corp 光ピックアップ、光ディスク装置、偏光調整板及び光学装置
WO2017067998A1 (en) 2015-10-19 2017-04-27 Deutsches Krebsforschungszentrum Chromatic phase plate
US9904068B1 (en) * 2017-01-09 2018-02-27 Asml Netherlands B.V. Reducing an optical power of a reflected light beam
GB2576031B (en) * 2018-08-02 2021-03-03 Envisics Ltd Illumination system and method
EP3671310A1 (en) * 2018-12-18 2020-06-24 Thomson Licensing Optical manipulation apparatus for trapping or moving micro or nanoparticles
JP7341906B2 (ja) * 2020-01-10 2023-09-11 株式会社日立エルジーデータストレージ 画像表示素子、画像表示装置および画像表示方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1040567A (ja) * 1996-07-19 1998-02-13 Hitachi Ltd 光学ヘッドおよびそれを用いた光学的情報再生装置
CN1311449C (zh) * 1998-11-09 2007-04-18 松下电器产业株式会社 光信息处理装置和光学元件
JP4474706B2 (ja) * 1999-12-15 2010-06-09 旭硝子株式会社 光ヘッド装置
JP2002182034A (ja) * 2000-12-14 2002-06-26 Matsushita Electric Ind Co Ltd 光学素子および光ピックアップ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI510319B (zh) * 2012-07-06 2015-12-01 Mitsubishi Electric Corp 偏光相位差板及雷射加工機

Also Published As

Publication number Publication date
EP1622137A1 (en) 2006-02-01
US20060250933A1 (en) 2006-11-09
CN1762009A (zh) 2006-04-19
WO2004097819A1 (ja) 2004-11-11
KR20050085523A (ko) 2005-08-29
JPWO2004097819A1 (ja) 2006-07-13
KR100656000B1 (ko) 2006-12-11

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